[dpdk-dev] [PATCH RFC 05/13] core: move librte_mempool to core subdir
Sergio Gonzalez Monroy
sergio.gonzalez.monroy at intel.com
Mon Jan 12 17:33:58 CET 2015
This is equivalent to:
git mv lib/librte_mempool lib/core
Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy at intel.com>
---
lib/core/librte_mempool/Makefile | 51 +
lib/core/librte_mempool/rte_dom0_mempool.c | 134 +++
lib/core/librte_mempool/rte_mempool.c | 901 ++++++++++++++++++
lib/core/librte_mempool/rte_mempool.h | 1392 ++++++++++++++++++++++++++++
lib/librte_mempool/Makefile | 51 -
lib/librte_mempool/rte_dom0_mempool.c | 134 ---
lib/librte_mempool/rte_mempool.c | 901 ------------------
lib/librte_mempool/rte_mempool.h | 1392 ----------------------------
8 files changed, 2478 insertions(+), 2478 deletions(-)
create mode 100644 lib/core/librte_mempool/Makefile
create mode 100644 lib/core/librte_mempool/rte_dom0_mempool.c
create mode 100644 lib/core/librte_mempool/rte_mempool.c
create mode 100644 lib/core/librte_mempool/rte_mempool.h
delete mode 100644 lib/librte_mempool/Makefile
delete mode 100644 lib/librte_mempool/rte_dom0_mempool.c
delete mode 100644 lib/librte_mempool/rte_mempool.c
delete mode 100644 lib/librte_mempool/rte_mempool.h
diff --git a/lib/core/librte_mempool/Makefile b/lib/core/librte_mempool/Makefile
new file mode 100644
index 0000000..9939e10
--- /dev/null
+++ b/lib/core/librte_mempool/Makefile
@@ -0,0 +1,51 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# library name
+LIB = librte_mempool.a
+
+CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
+
+# all source are stored in SRCS-y
+SRCS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += rte_mempool.c
+ifeq ($(CONFIG_RTE_LIBRTE_XEN_DOM0),y)
+SRCS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += rte_dom0_mempool.c
+endif
+# install includes
+SYMLINK-$(CONFIG_RTE_LIBRTE_MEMPOOL)-include := rte_mempool.h
+
+# this lib needs eal, rte_ring and rte_malloc
+DEPDIRS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += lib/librte_eal lib/librte_ring
+DEPDIRS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += lib/librte_malloc
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/lib/core/librte_mempool/rte_dom0_mempool.c b/lib/core/librte_mempool/rte_dom0_mempool.c
new file mode 100644
index 0000000..9ec68fb
--- /dev/null
+++ b/lib/core/librte_mempool/rte_dom0_mempool.c
@@ -0,0 +1,134 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_atomic.h>
+#include <rte_launch.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_eal_memconfig.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+#include <rte_errno.h>
+#include <rte_string_fns.h>
+#include <rte_spinlock.h>
+
+#include "rte_mempool.h"
+
+static void
+get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num,
+ uint32_t pg_sz, uint32_t memseg_id)
+{
+ uint32_t i;
+ uint64_t virt_addr, mfn_id;
+ struct rte_mem_config *mcfg;
+ uint32_t page_size = getpagesize();
+
+ /* get pointer to global configuration */
+ mcfg = rte_eal_get_configuration()->mem_config;
+ virt_addr =(uintptr_t) mcfg->memseg[memseg_id].addr;
+
+ for (i = 0; i != pg_num; i++) {
+ mfn_id = ((uintptr_t)va + i * pg_sz - virt_addr) / RTE_PGSIZE_2M;
+ pa[i] = mcfg->memseg[memseg_id].mfn[mfn_id] * page_size;
+ }
+}
+
+/* create the mempool for supporting Dom0 */
+struct rte_mempool *
+rte_dom0_mempool_create(const char *name, unsigned elt_num, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags)
+{
+ struct rte_mempool *mp = NULL;
+ phys_addr_t *pa;
+ char *va;
+ size_t sz;
+ uint32_t pg_num, pg_shift, pg_sz, total_size;
+ const struct rte_memzone *mz;
+ char mz_name[RTE_MEMZONE_NAMESIZE];
+ int mz_flags = RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY;
+
+ pg_sz = RTE_PGSIZE_2M;
+
+ pg_shift = rte_bsf32(pg_sz);
+ total_size = rte_mempool_calc_obj_size(elt_size, flags, NULL);
+
+ /* calc max memory size and max number of pages needed. */
+ sz = rte_mempool_xmem_size(elt_num, total_size, pg_shift) +
+ RTE_PGSIZE_2M;
+ pg_num = sz >> pg_shift;
+
+ /* extract physical mappings of the allocated memory. */
+ pa = calloc(pg_num, sizeof (*pa));
+ if (pa == NULL)
+ return mp;
+
+ snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_OBJ_NAME, name);
+ mz = rte_memzone_reserve(mz_name, sz, socket_id, mz_flags);
+ if (mz == NULL) {
+ free(pa);
+ return mp;
+ }
+
+ va = (char *)RTE_ALIGN_CEIL((uintptr_t)mz->addr, RTE_PGSIZE_2M);
+ /* extract physical mappings of the allocated memory. */
+ get_phys_map(va, pa, pg_num, pg_sz, mz->memseg_id);
+
+ mp = rte_mempool_xmem_create(name, elt_num, elt_size,
+ cache_size, private_data_size,
+ mp_init, mp_init_arg,
+ obj_init, obj_init_arg,
+ socket_id, flags, va, pa, pg_num, pg_shift);
+
+ free(pa);
+
+ return (mp);
+}
diff --git a/lib/core/librte_mempool/rte_mempool.c b/lib/core/librte_mempool/rte_mempool.c
new file mode 100644
index 0000000..4cf6c25
--- /dev/null
+++ b/lib/core/librte_mempool/rte_mempool.c
@@ -0,0 +1,901 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_malloc.h>
+#include <rte_atomic.h>
+#include <rte_launch.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_eal_memconfig.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+#include <rte_errno.h>
+#include <rte_string_fns.h>
+#include <rte_spinlock.h>
+
+#include "rte_mempool.h"
+
+TAILQ_HEAD(rte_mempool_list, rte_tailq_entry);
+
+#define CACHE_FLUSHTHRESH_MULTIPLIER 1.5
+
+/*
+ * return the greatest common divisor between a and b (fast algorithm)
+ *
+ */
+static unsigned get_gcd(unsigned a, unsigned b)
+{
+ unsigned c;
+
+ if (0 == a)
+ return b;
+ if (0 == b)
+ return a;
+
+ if (a < b) {
+ c = a;
+ a = b;
+ b = c;
+ }
+
+ while (b != 0) {
+ c = a % b;
+ a = b;
+ b = c;
+ }
+
+ return a;
+}
+
+/*
+ * Depending on memory configuration, objects addresses are spread
+ * between channels and ranks in RAM: the pool allocator will add
+ * padding between objects. This function return the new size of the
+ * object.
+ */
+static unsigned optimize_object_size(unsigned obj_size)
+{
+ unsigned nrank, nchan;
+ unsigned new_obj_size;
+
+ /* get number of channels */
+ nchan = rte_memory_get_nchannel();
+ if (nchan == 0)
+ nchan = 1;
+
+ nrank = rte_memory_get_nrank();
+ if (nrank == 0)
+ nrank = 1;
+
+ /* process new object size */
+ new_obj_size = (obj_size + RTE_CACHE_LINE_MASK) / RTE_CACHE_LINE_SIZE;
+ while (get_gcd(new_obj_size, nrank * nchan) != 1)
+ new_obj_size++;
+ return new_obj_size * RTE_CACHE_LINE_SIZE;
+}
+
+static void
+mempool_add_elem(struct rte_mempool *mp, void *obj, uint32_t obj_idx,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg)
+{
+ struct rte_mempool **mpp;
+
+ obj = (char *)obj + mp->header_size;
+
+ /* set mempool ptr in header */
+ mpp = __mempool_from_obj(obj);
+ *mpp = mp;
+
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ __mempool_write_header_cookie(obj, 1);
+ __mempool_write_trailer_cookie(obj);
+#endif
+ /* call the initializer */
+ if (obj_init)
+ obj_init(mp, obj_init_arg, obj, obj_idx);
+
+ /* enqueue in ring */
+ rte_ring_sp_enqueue(mp->ring, obj);
+}
+
+uint32_t
+rte_mempool_obj_iter(void *vaddr, uint32_t elt_num, size_t elt_sz, size_t align,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift,
+ rte_mempool_obj_iter_t obj_iter, void *obj_iter_arg)
+{
+ uint32_t i, j, k;
+ uint32_t pgn;
+ uintptr_t end, start, va;
+ uintptr_t pg_sz;
+
+ pg_sz = (uintptr_t)1 << pg_shift;
+ va = (uintptr_t)vaddr;
+
+ i = 0;
+ j = 0;
+
+ while (i != elt_num && j != pg_num) {
+
+ start = RTE_ALIGN_CEIL(va, align);
+ end = start + elt_sz;
+
+ pgn = (end >> pg_shift) - (start >> pg_shift);
+ pgn += j;
+
+ /* do we have enough space left for the next element. */
+ if (pgn >= pg_num)
+ break;
+
+ for (k = j;
+ k != pgn &&
+ paddr[k] + pg_sz == paddr[k + 1];
+ k++)
+ ;
+
+ /*
+ * if next pgn chunks of memory physically continuous,
+ * use it to create next element.
+ * otherwise, just skip that chunk unused.
+ */
+ if (k == pgn) {
+ if (obj_iter != NULL)
+ obj_iter(obj_iter_arg, (void *)start,
+ (void *)end, i);
+ va = end;
+ j = pgn;
+ i++;
+ } else {
+ va = RTE_ALIGN_CEIL((va + 1), pg_sz);
+ j++;
+ }
+ }
+
+ return (i);
+}
+
+/*
+ * Populate mempool with the objects.
+ */
+
+struct mempool_populate_arg {
+ struct rte_mempool *mp;
+ rte_mempool_obj_ctor_t *obj_init;
+ void *obj_init_arg;
+};
+
+static void
+mempool_obj_populate(void *arg, void *start, void *end, uint32_t idx)
+{
+ struct mempool_populate_arg *pa = arg;
+
+ mempool_add_elem(pa->mp, start, idx, pa->obj_init, pa->obj_init_arg);
+ pa->mp->elt_va_end = (uintptr_t)end;
+}
+
+static void
+mempool_populate(struct rte_mempool *mp, size_t num, size_t align,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg)
+{
+ uint32_t elt_sz;
+ struct mempool_populate_arg arg;
+
+ elt_sz = mp->elt_size + mp->header_size + mp->trailer_size;
+ arg.mp = mp;
+ arg.obj_init = obj_init;
+ arg.obj_init_arg = obj_init_arg;
+
+ mp->size = rte_mempool_obj_iter((void *)mp->elt_va_start,
+ num, elt_sz, align,
+ mp->elt_pa, mp->pg_num, mp->pg_shift,
+ mempool_obj_populate, &arg);
+}
+
+uint32_t
+rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,
+ struct rte_mempool_objsz *sz)
+{
+ struct rte_mempool_objsz lsz;
+
+ sz = (sz != NULL) ? sz : &lsz;
+
+ /*
+ * In header, we have at least the pointer to the pool, and
+ * optionaly a 64 bits cookie.
+ */
+ sz->header_size = 0;
+ sz->header_size += sizeof(struct rte_mempool *); /* ptr to pool */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ sz->header_size += sizeof(uint64_t); /* cookie */
+#endif
+ if ((flags & MEMPOOL_F_NO_CACHE_ALIGN) == 0)
+ sz->header_size = RTE_ALIGN_CEIL(sz->header_size,
+ RTE_CACHE_LINE_SIZE);
+
+ /* trailer contains the cookie in debug mode */
+ sz->trailer_size = 0;
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ sz->trailer_size += sizeof(uint64_t); /* cookie */
+#endif
+ /* element size is 8 bytes-aligned at least */
+ sz->elt_size = RTE_ALIGN_CEIL(elt_size, sizeof(uint64_t));
+
+ /* expand trailer to next cache line */
+ if ((flags & MEMPOOL_F_NO_CACHE_ALIGN) == 0) {
+ sz->total_size = sz->header_size + sz->elt_size +
+ sz->trailer_size;
+ sz->trailer_size += ((RTE_CACHE_LINE_SIZE -
+ (sz->total_size & RTE_CACHE_LINE_MASK)) &
+ RTE_CACHE_LINE_MASK);
+ }
+
+ /*
+ * increase trailer to add padding between objects in order to
+ * spread them across memory channels/ranks
+ */
+ if ((flags & MEMPOOL_F_NO_SPREAD) == 0) {
+ unsigned new_size;
+ new_size = optimize_object_size(sz->header_size + sz->elt_size +
+ sz->trailer_size);
+ sz->trailer_size = new_size - sz->header_size - sz->elt_size;
+ }
+
+ if (! rte_eal_has_hugepages()) {
+ /*
+ * compute trailer size so that pool elements fit exactly in
+ * a standard page
+ */
+ int page_size = getpagesize();
+ int new_size = page_size - sz->header_size - sz->elt_size;
+ if (new_size < 0 || (unsigned int)new_size < sz->trailer_size) {
+ printf("When hugepages are disabled, pool objects "
+ "can't exceed PAGE_SIZE: %d + %d + %d > %d\n",
+ sz->header_size, sz->elt_size, sz->trailer_size,
+ page_size);
+ return 0;
+ }
+ sz->trailer_size = new_size;
+ }
+
+ /* this is the size of an object, including header and trailer */
+ sz->total_size = sz->header_size + sz->elt_size + sz->trailer_size;
+
+ return (sz->total_size);
+}
+
+
+/*
+ * Calculate maximum amount of memory required to store given number of objects.
+ */
+size_t
+rte_mempool_xmem_size(uint32_t elt_num, size_t elt_sz, uint32_t pg_shift)
+{
+ size_t n, pg_num, pg_sz, sz;
+
+ pg_sz = (size_t)1 << pg_shift;
+
+ if ((n = pg_sz / elt_sz) > 0) {
+ pg_num = (elt_num + n - 1) / n;
+ sz = pg_num << pg_shift;
+ } else {
+ sz = RTE_ALIGN_CEIL(elt_sz, pg_sz) * elt_num;
+ }
+
+ return (sz);
+}
+
+/*
+ * Calculate how much memory would be actually required with the
+ * given memory footprint to store required number of elements.
+ */
+static void
+mempool_lelem_iter(void *arg, __rte_unused void *start, void *end,
+ __rte_unused uint32_t idx)
+{
+ *(uintptr_t *)arg = (uintptr_t)end;
+}
+
+ssize_t
+rte_mempool_xmem_usage(void *vaddr, uint32_t elt_num, size_t elt_sz,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift)
+{
+ uint32_t n;
+ uintptr_t va, uv;
+ size_t pg_sz, usz;
+
+ pg_sz = (size_t)1 << pg_shift;
+ va = (uintptr_t)vaddr;
+ uv = va;
+
+ if ((n = rte_mempool_obj_iter(vaddr, elt_num, elt_sz, 1,
+ paddr, pg_num, pg_shift, mempool_lelem_iter,
+ &uv)) != elt_num) {
+ return (-n);
+ }
+
+ uv = RTE_ALIGN_CEIL(uv, pg_sz);
+ usz = uv - va;
+ return (usz);
+}
+
+/* create the mempool */
+struct rte_mempool *
+rte_mempool_create(const char *name, unsigned n, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags)
+{
+#ifdef RTE_LIBRTE_XEN_DOM0
+ return (rte_dom0_mempool_create(name, n, elt_size,
+ cache_size, private_data_size,
+ mp_init, mp_init_arg,
+ obj_init, obj_init_arg,
+ socket_id, flags));
+#else
+ return (rte_mempool_xmem_create(name, n, elt_size,
+ cache_size, private_data_size,
+ mp_init, mp_init_arg,
+ obj_init, obj_init_arg,
+ socket_id, flags,
+ NULL, NULL, MEMPOOL_PG_NUM_DEFAULT, MEMPOOL_PG_SHIFT_MAX));
+#endif
+}
+
+/*
+ * Create the mempool over already allocated chunk of memory.
+ * That external memory buffer can consists of physically disjoint pages.
+ * Setting vaddr to NULL, makes mempool to fallback to original behaviour
+ * and allocate space for mempool and it's elements as one big chunk of
+ * physically continuos memory.
+ * */
+struct rte_mempool *
+rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags, void *vaddr,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift)
+{
+ char mz_name[RTE_MEMZONE_NAMESIZE];
+ char rg_name[RTE_RING_NAMESIZE];
+ struct rte_mempool *mp = NULL;
+ struct rte_tailq_entry *te;
+ struct rte_ring *r;
+ const struct rte_memzone *mz;
+ size_t mempool_size;
+ int mz_flags = RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY;
+ int rg_flags = 0;
+ void *obj;
+ struct rte_mempool_objsz objsz;
+ void *startaddr;
+ int page_size = getpagesize();
+
+ /* compilation-time checks */
+ RTE_BUILD_BUG_ON((sizeof(struct rte_mempool) &
+ RTE_CACHE_LINE_MASK) != 0);
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ RTE_BUILD_BUG_ON((sizeof(struct rte_mempool_cache) &
+ RTE_CACHE_LINE_MASK) != 0);
+ RTE_BUILD_BUG_ON((offsetof(struct rte_mempool, local_cache) &
+ RTE_CACHE_LINE_MASK) != 0);
+#endif
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ RTE_BUILD_BUG_ON((sizeof(struct rte_mempool_debug_stats) &
+ RTE_CACHE_LINE_MASK) != 0);
+ RTE_BUILD_BUG_ON((offsetof(struct rte_mempool, stats) &
+ RTE_CACHE_LINE_MASK) != 0);
+#endif
+
+ /* check that we have an initialised tail queue */
+ if (RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL,
+ rte_mempool_list) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
+
+ /* asked cache too big */
+ if (cache_size > RTE_MEMPOOL_CACHE_MAX_SIZE) {
+ rte_errno = EINVAL;
+ return NULL;
+ }
+
+ /* check that we have both VA and PA */
+ if (vaddr != NULL && paddr == NULL) {
+ rte_errno = EINVAL;
+ return NULL;
+ }
+
+ /* Check that pg_num and pg_shift parameters are valid. */
+ if (pg_num < RTE_DIM(mp->elt_pa) || pg_shift > MEMPOOL_PG_SHIFT_MAX) {
+ rte_errno = EINVAL;
+ return NULL;
+ }
+
+ /* "no cache align" imply "no spread" */
+ if (flags & MEMPOOL_F_NO_CACHE_ALIGN)
+ flags |= MEMPOOL_F_NO_SPREAD;
+
+ /* ring flags */
+ if (flags & MEMPOOL_F_SP_PUT)
+ rg_flags |= RING_F_SP_ENQ;
+ if (flags & MEMPOOL_F_SC_GET)
+ rg_flags |= RING_F_SC_DEQ;
+
+ /* calculate mempool object sizes. */
+ if (!rte_mempool_calc_obj_size(elt_size, flags, &objsz)) {
+ rte_errno = EINVAL;
+ return NULL;
+ }
+
+ rte_rwlock_write_lock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ /* allocate the ring that will be used to store objects */
+ /* Ring functions will return appropriate errors if we are
+ * running as a secondary process etc., so no checks made
+ * in this function for that condition */
+ snprintf(rg_name, sizeof(rg_name), RTE_MEMPOOL_MZ_FORMAT, name);
+ r = rte_ring_create(rg_name, rte_align32pow2(n+1), socket_id, rg_flags);
+ if (r == NULL)
+ goto exit;
+
+ /*
+ * reserve a memory zone for this mempool: private data is
+ * cache-aligned
+ */
+ private_data_size = (private_data_size +
+ RTE_CACHE_LINE_MASK) & (~RTE_CACHE_LINE_MASK);
+
+ if (! rte_eal_has_hugepages()) {
+ /*
+ * expand private data size to a whole page, so that the
+ * first pool element will start on a new standard page
+ */
+ int head = sizeof(struct rte_mempool);
+ int new_size = (private_data_size + head) % page_size;
+ if (new_size) {
+ private_data_size += page_size - new_size;
+ }
+ }
+
+ /* try to allocate tailq entry */
+ te = rte_zmalloc("MEMPOOL_TAILQ_ENTRY", sizeof(*te), 0);
+ if (te == NULL) {
+ RTE_LOG(ERR, MEMPOOL, "Cannot allocate tailq entry!\n");
+ goto exit;
+ }
+
+ /*
+ * If user provided an external memory buffer, then use it to
+ * store mempool objects. Otherwise reserve memzone big enough to
+ * hold mempool header and metadata plus mempool objects.
+ */
+ mempool_size = MEMPOOL_HEADER_SIZE(mp, pg_num) + private_data_size;
+ if (vaddr == NULL)
+ mempool_size += (size_t)objsz.total_size * n;
+
+ if (! rte_eal_has_hugepages()) {
+ /*
+ * we want the memory pool to start on a page boundary,
+ * because pool elements crossing page boundaries would
+ * result in discontiguous physical addresses
+ */
+ mempool_size += page_size;
+ }
+
+ snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_MZ_FORMAT, name);
+
+ mz = rte_memzone_reserve(mz_name, mempool_size, socket_id, mz_flags);
+
+ /*
+ * no more memory: in this case we loose previously reserved
+ * space for the as we cannot free it
+ */
+ if (mz == NULL) {
+ rte_free(te);
+ goto exit;
+ }
+
+ if (rte_eal_has_hugepages()) {
+ startaddr = (void*)mz->addr;
+ } else {
+ /* align memory pool start address on a page boundary */
+ unsigned long addr = (unsigned long)mz->addr;
+ if (addr & (page_size - 1)) {
+ addr += page_size;
+ addr &= ~(page_size - 1);
+ }
+ startaddr = (void*)addr;
+ }
+
+ /* init the mempool structure */
+ mp = startaddr;
+ memset(mp, 0, sizeof(*mp));
+ snprintf(mp->name, sizeof(mp->name), "%s", name);
+ mp->phys_addr = mz->phys_addr;
+ mp->ring = r;
+ mp->size = n;
+ mp->flags = flags;
+ mp->elt_size = objsz.elt_size;
+ mp->header_size = objsz.header_size;
+ mp->trailer_size = objsz.trailer_size;
+ mp->cache_size = cache_size;
+ mp->cache_flushthresh = (uint32_t)
+ (cache_size * CACHE_FLUSHTHRESH_MULTIPLIER);
+ mp->private_data_size = private_data_size;
+
+ /* calculate address of the first element for continuous mempool. */
+ obj = (char *)mp + MEMPOOL_HEADER_SIZE(mp, pg_num) +
+ private_data_size;
+
+ /* populate address translation fields. */
+ mp->pg_num = pg_num;
+ mp->pg_shift = pg_shift;
+ mp->pg_mask = RTE_LEN2MASK(mp->pg_shift, typeof(mp->pg_mask));
+
+ /* mempool elements allocated together with mempool */
+ if (vaddr == NULL) {
+ mp->elt_va_start = (uintptr_t)obj;
+ mp->elt_pa[0] = mp->phys_addr +
+ (mp->elt_va_start - (uintptr_t)mp);
+
+ /* mempool elements in a separate chunk of memory. */
+ } else {
+ mp->elt_va_start = (uintptr_t)vaddr;
+ memcpy(mp->elt_pa, paddr, sizeof (mp->elt_pa[0]) * pg_num);
+ }
+
+ mp->elt_va_end = mp->elt_va_start;
+
+ /* call the initializer */
+ if (mp_init)
+ mp_init(mp, mp_init_arg);
+
+ mempool_populate(mp, n, 1, obj_init, obj_init_arg);
+
+ te->data = (void *) mp;
+
+ RTE_EAL_TAILQ_INSERT_TAIL(RTE_TAILQ_MEMPOOL, rte_mempool_list, te);
+
+exit:
+ rte_rwlock_write_unlock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ return mp;
+}
+
+/* Return the number of entries in the mempool */
+unsigned
+rte_mempool_count(const struct rte_mempool *mp)
+{
+ unsigned count;
+
+ count = rte_ring_count(mp->ring);
+
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ {
+ unsigned lcore_id;
+ if (mp->cache_size == 0)
+ return count;
+
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
+ count += mp->local_cache[lcore_id].len;
+ }
+#endif
+
+ /*
+ * due to race condition (access to len is not locked), the
+ * total can be greater than size... so fix the result
+ */
+ if (count > mp->size)
+ return mp->size;
+ return count;
+}
+
+/* dump the cache status */
+static unsigned
+rte_mempool_dump_cache(FILE *f, const struct rte_mempool *mp)
+{
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ unsigned lcore_id;
+ unsigned count = 0;
+ unsigned cache_count;
+
+ fprintf(f, " cache infos:\n");
+ fprintf(f, " cache_size=%"PRIu32"\n", mp->cache_size);
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+ cache_count = mp->local_cache[lcore_id].len;
+ fprintf(f, " cache_count[%u]=%u\n", lcore_id, cache_count);
+ count += cache_count;
+ }
+ fprintf(f, " total_cache_count=%u\n", count);
+ return count;
+#else
+ RTE_SET_USED(mp);
+ fprintf(f, " cache disabled\n");
+ return 0;
+#endif
+}
+
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+/* check cookies before and after objects */
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+struct mempool_audit_arg {
+ const struct rte_mempool *mp;
+ uintptr_t obj_end;
+ uint32_t obj_num;
+};
+
+static void
+mempool_obj_audit(void *arg, void *start, void *end, uint32_t idx)
+{
+ struct mempool_audit_arg *pa = arg;
+ void *obj;
+
+ obj = (char *)start + pa->mp->header_size;
+ pa->obj_end = (uintptr_t)end;
+ pa->obj_num = idx + 1;
+ __mempool_check_cookies(pa->mp, &obj, 1, 2);
+}
+
+static void
+mempool_audit_cookies(const struct rte_mempool *mp)
+{
+ uint32_t elt_sz, num;
+ struct mempool_audit_arg arg;
+
+ elt_sz = mp->elt_size + mp->header_size + mp->trailer_size;
+
+ arg.mp = mp;
+ arg.obj_end = mp->elt_va_start;
+ arg.obj_num = 0;
+
+ num = rte_mempool_obj_iter((void *)mp->elt_va_start,
+ mp->size, elt_sz, 1,
+ mp->elt_pa, mp->pg_num, mp->pg_shift,
+ mempool_obj_audit, &arg);
+
+ if (num != mp->size) {
+ rte_panic("rte_mempool_obj_iter(mempool=%p, size=%u) "
+ "iterated only over %u elements\n",
+ mp, mp->size, num);
+ } else if (arg.obj_end != mp->elt_va_end || arg.obj_num != mp->size) {
+ rte_panic("rte_mempool_obj_iter(mempool=%p, size=%u) "
+ "last callback va_end: %#tx (%#tx expeceted), "
+ "num of objects: %u (%u expected)\n",
+ mp, mp->size,
+ arg.obj_end, mp->elt_va_end,
+ arg.obj_num, mp->size);
+ }
+}
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic error "-Wcast-qual"
+#endif
+#else
+#define mempool_audit_cookies(mp) do {} while(0)
+#endif
+
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+/* check cookies before and after objects */
+static void
+mempool_audit_cache(const struct rte_mempool *mp)
+{
+ /* check cache size consistency */
+ unsigned lcore_id;
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+ if (mp->local_cache[lcore_id].len > mp->cache_flushthresh) {
+ RTE_LOG(CRIT, MEMPOOL, "badness on cache[%u]\n",
+ lcore_id);
+ rte_panic("MEMPOOL: invalid cache len\n");
+ }
+ }
+}
+#else
+#define mempool_audit_cache(mp) do {} while(0)
+#endif
+
+
+/* check the consistency of mempool (size, cookies, ...) */
+void
+rte_mempool_audit(const struct rte_mempool *mp)
+{
+ mempool_audit_cache(mp);
+ mempool_audit_cookies(mp);
+
+ /* For case where mempool DEBUG is not set, and cache size is 0 */
+ RTE_SET_USED(mp);
+}
+
+/* dump the status of the mempool on the console */
+void
+rte_mempool_dump(FILE *f, const struct rte_mempool *mp)
+{
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ struct rte_mempool_debug_stats sum;
+ unsigned lcore_id;
+#endif
+ unsigned common_count;
+ unsigned cache_count;
+
+ RTE_VERIFY(f != NULL);
+ RTE_VERIFY(mp != NULL);
+
+ fprintf(f, "mempool <%s>@%p\n", mp->name, mp);
+ fprintf(f, " flags=%x\n", mp->flags);
+ fprintf(f, " ring=<%s>@%p\n", mp->ring->name, mp->ring);
+ fprintf(f, " phys_addr=0x%" PRIx64 "\n", mp->phys_addr);
+ fprintf(f, " size=%"PRIu32"\n", mp->size);
+ fprintf(f, " header_size=%"PRIu32"\n", mp->header_size);
+ fprintf(f, " elt_size=%"PRIu32"\n", mp->elt_size);
+ fprintf(f, " trailer_size=%"PRIu32"\n", mp->trailer_size);
+ fprintf(f, " total_obj_size=%"PRIu32"\n",
+ mp->header_size + mp->elt_size + mp->trailer_size);
+
+ fprintf(f, " private_data_size=%"PRIu32"\n", mp->private_data_size);
+ fprintf(f, " pg_num=%"PRIu32"\n", mp->pg_num);
+ fprintf(f, " pg_shift=%"PRIu32"\n", mp->pg_shift);
+ fprintf(f, " pg_mask=%#tx\n", mp->pg_mask);
+ fprintf(f, " elt_va_start=%#tx\n", mp->elt_va_start);
+ fprintf(f, " elt_va_end=%#tx\n", mp->elt_va_end);
+ fprintf(f, " elt_pa[0]=0x%" PRIx64 "\n", mp->elt_pa[0]);
+
+ if (mp->size != 0)
+ fprintf(f, " avg bytes/object=%#Lf\n",
+ (long double)(mp->elt_va_end - mp->elt_va_start) /
+ mp->size);
+
+ cache_count = rte_mempool_dump_cache(f, mp);
+ common_count = rte_ring_count(mp->ring);
+ if ((cache_count + common_count) > mp->size)
+ common_count = mp->size - cache_count;
+ fprintf(f, " common_pool_count=%u\n", common_count);
+
+ /* sum and dump statistics */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ memset(&sum, 0, sizeof(sum));
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+ sum.put_bulk += mp->stats[lcore_id].put_bulk;
+ sum.put_objs += mp->stats[lcore_id].put_objs;
+ sum.get_success_bulk += mp->stats[lcore_id].get_success_bulk;
+ sum.get_success_objs += mp->stats[lcore_id].get_success_objs;
+ sum.get_fail_bulk += mp->stats[lcore_id].get_fail_bulk;
+ sum.get_fail_objs += mp->stats[lcore_id].get_fail_objs;
+ }
+ fprintf(f, " stats:\n");
+ fprintf(f, " put_bulk=%"PRIu64"\n", sum.put_bulk);
+ fprintf(f, " put_objs=%"PRIu64"\n", sum.put_objs);
+ fprintf(f, " get_success_bulk=%"PRIu64"\n", sum.get_success_bulk);
+ fprintf(f, " get_success_objs=%"PRIu64"\n", sum.get_success_objs);
+ fprintf(f, " get_fail_bulk=%"PRIu64"\n", sum.get_fail_bulk);
+ fprintf(f, " get_fail_objs=%"PRIu64"\n", sum.get_fail_objs);
+#else
+ fprintf(f, " no statistics available\n");
+#endif
+
+ rte_mempool_audit(mp);
+}
+
+/* dump the status of all mempools on the console */
+void
+rte_mempool_list_dump(FILE *f)
+{
+ const struct rte_mempool *mp = NULL;
+ struct rte_tailq_entry *te;
+ struct rte_mempool_list *mempool_list;
+
+ if ((mempool_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return;
+ }
+
+ rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ TAILQ_FOREACH(te, mempool_list, next) {
+ mp = (struct rte_mempool *) te->data;
+ rte_mempool_dump(f, mp);
+ }
+
+ rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
+}
+
+/* search a mempool from its name */
+struct rte_mempool *
+rte_mempool_lookup(const char *name)
+{
+ struct rte_mempool *mp = NULL;
+ struct rte_tailq_entry *te;
+ struct rte_mempool_list *mempool_list;
+
+ if ((mempool_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
+
+ rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ TAILQ_FOREACH(te, mempool_list, next) {
+ mp = (struct rte_mempool *) te->data;
+ if (strncmp(name, mp->name, RTE_MEMPOOL_NAMESIZE) == 0)
+ break;
+ }
+
+ rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ if (te == NULL) {
+ rte_errno = ENOENT;
+ return NULL;
+ }
+
+ return mp;
+}
+
+void rte_mempool_walk(void (*func)(const struct rte_mempool *, void *),
+ void *arg)
+{
+ struct rte_tailq_entry *te = NULL;
+ struct rte_mempool_list *mempool_list;
+
+ if ((mempool_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return;
+ }
+
+ rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
+
+ TAILQ_FOREACH(te, mempool_list, next) {
+ (*func)((struct rte_mempool *) te->data, arg);
+ }
+
+ rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
+}
diff --git a/lib/core/librte_mempool/rte_mempool.h b/lib/core/librte_mempool/rte_mempool.h
new file mode 100644
index 0000000..3314651
--- /dev/null
+++ b/lib/core/librte_mempool/rte_mempool.h
@@ -0,0 +1,1392 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTE_MEMPOOL_H_
+#define _RTE_MEMPOOL_H_
+
+/**
+ * @file
+ * RTE Mempool.
+ *
+ * A memory pool is an allocator of fixed-size object. It is
+ * identified by its name, and uses a ring to store free objects. It
+ * provides some other optional services, like a per-core object
+ * cache, and an alignment helper to ensure that objects are padded
+ * to spread them equally on all RAM channels, ranks, and so on.
+ *
+ * Objects owned by a mempool should never be added in another
+ * mempool. When an object is freed using rte_mempool_put() or
+ * equivalent, the object data is not modified; the user can save some
+ * meta-data in the object data and retrieve them when allocating a
+ * new object.
+ *
+ * Note: the mempool implementation is not preemptable. A lcore must
+ * not be interrupted by another task that uses the same mempool
+ * (because it uses a ring which is not preemptable). Also, mempool
+ * functions must not be used outside the DPDK environment: for
+ * example, in linuxapp environment, a thread that is not created by
+ * the EAL must not use mempools. This is due to the per-lcore cache
+ * that won't work as rte_lcore_id() will not return a correct value.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <sys/queue.h>
+
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_lcore.h>
+#include <rte_memory.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define RTE_MEMPOOL_HEADER_COOKIE1 0xbadbadbadadd2e55ULL /**< Header cookie. */
+#define RTE_MEMPOOL_HEADER_COOKIE2 0xf2eef2eedadd2e55ULL /**< Header cookie. */
+#define RTE_MEMPOOL_TRAILER_COOKIE 0xadd2e55badbadbadULL /**< Trailer cookie.*/
+
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+/**
+ * A structure that stores the mempool statistics (per-lcore).
+ */
+struct rte_mempool_debug_stats {
+ uint64_t put_bulk; /**< Number of puts. */
+ uint64_t put_objs; /**< Number of objects successfully put. */
+ uint64_t get_success_bulk; /**< Successful allocation number. */
+ uint64_t get_success_objs; /**< Objects successfully allocated. */
+ uint64_t get_fail_bulk; /**< Failed allocation number. */
+ uint64_t get_fail_objs; /**< Objects that failed to be allocated. */
+} __rte_cache_aligned;
+#endif
+
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+/**
+ * A structure that stores a per-core object cache.
+ */
+struct rte_mempool_cache {
+ unsigned len; /**< Cache len */
+ /*
+ * Cache is allocated to this size to allow it to overflow in certain
+ * cases to avoid needless emptying of cache.
+ */
+ void *objs[RTE_MEMPOOL_CACHE_MAX_SIZE * 3]; /**< Cache objects */
+} __rte_cache_aligned;
+#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
+
+struct rte_mempool_objsz {
+ uint32_t elt_size; /**< Size of an element. */
+ uint32_t header_size; /**< Size of header (before elt). */
+ uint32_t trailer_size; /**< Size of trailer (after elt). */
+ uint32_t total_size;
+ /**< Total size of an object (header + elt + trailer). */
+};
+
+#define RTE_MEMPOOL_NAMESIZE 32 /**< Maximum length of a memory pool. */
+#define RTE_MEMPOOL_MZ_PREFIX "MP_"
+
+/* "MP_<name>" */
+#define RTE_MEMPOOL_MZ_FORMAT RTE_MEMPOOL_MZ_PREFIX "%s"
+
+#ifdef RTE_LIBRTE_XEN_DOM0
+
+/* "<name>_MP_elt" */
+#define RTE_MEMPOOL_OBJ_NAME "%s_" RTE_MEMPOOL_MZ_PREFIX "elt"
+
+#else
+
+#define RTE_MEMPOOL_OBJ_NAME RTE_MEMPOOL_MZ_FORMAT
+
+#endif /* RTE_LIBRTE_XEN_DOM0 */
+
+#define MEMPOOL_PG_SHIFT_MAX (sizeof(uintptr_t) * CHAR_BIT - 1)
+
+/** Mempool over one chunk of physically continuous memory */
+#define MEMPOOL_PG_NUM_DEFAULT 1
+
+/**
+ * The RTE mempool structure.
+ */
+struct rte_mempool {
+ char name[RTE_MEMPOOL_NAMESIZE]; /**< Name of mempool. */
+ struct rte_ring *ring; /**< Ring to store objects. */
+ phys_addr_t phys_addr; /**< Phys. addr. of mempool struct. */
+ int flags; /**< Flags of the mempool. */
+ uint32_t size; /**< Size of the mempool. */
+ uint32_t cache_size; /**< Size of per-lcore local cache. */
+ uint32_t cache_flushthresh;
+ /**< Threshold before we flush excess elements. */
+
+ uint32_t elt_size; /**< Size of an element. */
+ uint32_t header_size; /**< Size of header (before elt). */
+ uint32_t trailer_size; /**< Size of trailer (after elt). */
+
+ unsigned private_data_size; /**< Size of private data. */
+
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ /** Per-lcore local cache. */
+ struct rte_mempool_cache local_cache[RTE_MAX_LCORE];
+#endif
+
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ /** Per-lcore statistics. */
+ struct rte_mempool_debug_stats stats[RTE_MAX_LCORE];
+#endif
+
+ /* Address translation support, starts from next cache line. */
+
+ /** Number of elements in the elt_pa array. */
+ uint32_t pg_num __rte_cache_aligned;
+ uint32_t pg_shift; /**< LOG2 of the physical pages. */
+ uintptr_t pg_mask; /**< physical page mask value. */
+ uintptr_t elt_va_start;
+ /**< Virtual address of the first mempool object. */
+ uintptr_t elt_va_end;
+ /**< Virtual address of the <size + 1> mempool object. */
+ phys_addr_t elt_pa[MEMPOOL_PG_NUM_DEFAULT];
+ /**< Array of physical pages addresses for the mempool objects buffer. */
+
+} __rte_cache_aligned;
+
+#define MEMPOOL_F_NO_SPREAD 0x0001 /**< Do not spread in memory. */
+#define MEMPOOL_F_NO_CACHE_ALIGN 0x0002 /**< Do not align objs on cache lines.*/
+#define MEMPOOL_F_SP_PUT 0x0004 /**< Default put is "single-producer".*/
+#define MEMPOOL_F_SC_GET 0x0008 /**< Default get is "single-consumer".*/
+
+/**
+ * @internal When debug is enabled, store some statistics.
+ * @param mp
+ * Pointer to the memory pool.
+ * @param name
+ * Name of the statistics field to increment in the memory pool.
+ * @param n
+ * Number to add to the object-oriented statistics.
+ */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+#define __MEMPOOL_STAT_ADD(mp, name, n) do { \
+ unsigned __lcore_id = rte_lcore_id(); \
+ mp->stats[__lcore_id].name##_objs += n; \
+ mp->stats[__lcore_id].name##_bulk += 1; \
+ } while(0)
+#else
+#define __MEMPOOL_STAT_ADD(mp, name, n) do {} while(0)
+#endif
+
+/**
+ * Calculates size of the mempool header.
+ * @param mp
+ * Pointer to the memory pool.
+ * @param pgn
+ * Number of page used to store mempool objects.
+ */
+#define MEMPOOL_HEADER_SIZE(mp, pgn) (sizeof(*(mp)) + \
+ RTE_ALIGN_CEIL(((pgn) - RTE_DIM((mp)->elt_pa)) * \
+ sizeof ((mp)->elt_pa[0]), RTE_CACHE_LINE_SIZE))
+
+/**
+ * Returns TRUE if whole mempool is allocated in one contiguous block of memory.
+ */
+#define MEMPOOL_IS_CONTIG(mp) \
+ ((mp)->pg_num == MEMPOOL_PG_NUM_DEFAULT && \
+ (mp)->phys_addr == (mp)->elt_pa[0])
+
+/**
+ * @internal Get a pointer to a mempool pointer in the object header.
+ * @param obj
+ * Pointer to object.
+ * @return
+ * The pointer to the mempool from which the object was allocated.
+ */
+static inline struct rte_mempool **__mempool_from_obj(void *obj)
+{
+ struct rte_mempool **mpp;
+ unsigned off;
+
+ off = sizeof(struct rte_mempool *);
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ off += sizeof(uint64_t);
+#endif
+ mpp = (struct rte_mempool **)((char *)obj - off);
+ return mpp;
+}
+
+/**
+ * Return a pointer to the mempool owning this object.
+ *
+ * @param obj
+ * An object that is owned by a pool. If this is not the case,
+ * the behavior is undefined.
+ * @return
+ * A pointer to the mempool structure.
+ */
+static inline const struct rte_mempool *rte_mempool_from_obj(void *obj)
+{
+ struct rte_mempool * const *mpp;
+ mpp = __mempool_from_obj(obj);
+ return *mpp;
+}
+
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+/* get header cookie value */
+static inline uint64_t __mempool_read_header_cookie(const void *obj)
+{
+ return *(const uint64_t *)((const char *)obj - sizeof(uint64_t));
+}
+
+/* get trailer cookie value */
+static inline uint64_t __mempool_read_trailer_cookie(void *obj)
+{
+ struct rte_mempool **mpp = __mempool_from_obj(obj);
+ return *(uint64_t *)((char *)obj + (*mpp)->elt_size);
+}
+
+/* write header cookie value */
+static inline void __mempool_write_header_cookie(void *obj, int free)
+{
+ uint64_t *cookie_p;
+ cookie_p = (uint64_t *)((char *)obj - sizeof(uint64_t));
+ if (free == 0)
+ *cookie_p = RTE_MEMPOOL_HEADER_COOKIE1;
+ else
+ *cookie_p = RTE_MEMPOOL_HEADER_COOKIE2;
+
+}
+
+/* write trailer cookie value */
+static inline void __mempool_write_trailer_cookie(void *obj)
+{
+ uint64_t *cookie_p;
+ struct rte_mempool **mpp = __mempool_from_obj(obj);
+ cookie_p = (uint64_t *)((char *)obj + (*mpp)->elt_size);
+ *cookie_p = RTE_MEMPOOL_TRAILER_COOKIE;
+}
+#endif /* RTE_LIBRTE_MEMPOOL_DEBUG */
+
+/**
+ * @internal Check and update cookies or panic.
+ *
+ * @param mp
+ * Pointer to the memory pool.
+ * @param obj_table_const
+ * Pointer to a table of void * pointers (objects).
+ * @param n
+ * Index of object in object table.
+ * @param free
+ * - 0: object is supposed to be allocated, mark it as free
+ * - 1: object is supposed to be free, mark it as allocated
+ * - 2: just check that cookie is valid (free or allocated)
+ */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+static inline void __mempool_check_cookies(const struct rte_mempool *mp,
+ void * const *obj_table_const,
+ unsigned n, int free)
+{
+ uint64_t cookie;
+ void *tmp;
+ void *obj;
+ void **obj_table;
+
+ /* Force to drop the "const" attribute. This is done only when
+ * DEBUG is enabled */
+ tmp = (void *) obj_table_const;
+ obj_table = (void **) tmp;
+
+ while (n--) {
+ obj = obj_table[n];
+
+ if (rte_mempool_from_obj(obj) != mp)
+ rte_panic("MEMPOOL: object is owned by another "
+ "mempool\n");
+
+ cookie = __mempool_read_header_cookie(obj);
+
+ if (free == 0) {
+ if (cookie != RTE_MEMPOOL_HEADER_COOKIE1) {
+ rte_log_set_history(0);
+ RTE_LOG(CRIT, MEMPOOL,
+ "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
+ obj, mp, cookie);
+ rte_panic("MEMPOOL: bad header cookie (put)\n");
+ }
+ __mempool_write_header_cookie(obj, 1);
+ }
+ else if (free == 1) {
+ if (cookie != RTE_MEMPOOL_HEADER_COOKIE2) {
+ rte_log_set_history(0);
+ RTE_LOG(CRIT, MEMPOOL,
+ "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
+ obj, mp, cookie);
+ rte_panic("MEMPOOL: bad header cookie (get)\n");
+ }
+ __mempool_write_header_cookie(obj, 0);
+ }
+ else if (free == 2) {
+ if (cookie != RTE_MEMPOOL_HEADER_COOKIE1 &&
+ cookie != RTE_MEMPOOL_HEADER_COOKIE2) {
+ rte_log_set_history(0);
+ RTE_LOG(CRIT, MEMPOOL,
+ "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
+ obj, mp, cookie);
+ rte_panic("MEMPOOL: bad header cookie (audit)\n");
+ }
+ }
+ cookie = __mempool_read_trailer_cookie(obj);
+ if (cookie != RTE_MEMPOOL_TRAILER_COOKIE) {
+ rte_log_set_history(0);
+ RTE_LOG(CRIT, MEMPOOL,
+ "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
+ obj, mp, cookie);
+ rte_panic("MEMPOOL: bad trailer cookie\n");
+ }
+ }
+}
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic error "-Wcast-qual"
+#endif
+#else
+#define __mempool_check_cookies(mp, obj_table_const, n, free) do {} while(0)
+#endif /* RTE_LIBRTE_MEMPOOL_DEBUG */
+
+/**
+ * An mempool's object iterator callback function.
+ */
+typedef void (*rte_mempool_obj_iter_t)(void * /*obj_iter_arg*/,
+ void * /*obj_start*/,
+ void * /*obj_end*/,
+ uint32_t /*obj_index */);
+
+/*
+ * Iterates across objects of the given size and alignment in the
+ * provided chunk of memory. The given memory buffer can consist of
+ * disjoint physical pages.
+ * For each object calls the provided callback (if any).
+ * Used to populate mempool, walk through all elements of the mempool,
+ * estimate how many elements of the given size could be created in the given
+ * memory buffer.
+ * @param vaddr
+ * Virtual address of the memory buffer.
+ * @param elt_num
+ * Maximum number of objects to iterate through.
+ * @param elt_sz
+ * Size of each object.
+ * @param paddr
+ * Array of phyiscall addresses of the pages that comprises given memory
+ * buffer.
+ * @param pg_num
+ * Number of elements in the paddr array.
+ * @param pg_shift
+ * LOG2 of the physical pages size.
+ * @param obj_iter
+ * Object iterator callback function (could be NULL).
+ * @param obj_iter_arg
+ * User defined Prameter for the object iterator callback function.
+ *
+ * @return
+ * Number of objects iterated through.
+ */
+
+uint32_t rte_mempool_obj_iter(void *vaddr,
+ uint32_t elt_num, size_t elt_sz, size_t align,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift,
+ rte_mempool_obj_iter_t obj_iter, void *obj_iter_arg);
+
+/**
+ * An object constructor callback function for mempool.
+ *
+ * Arguments are the mempool, the opaque pointer given by the user in
+ * rte_mempool_create(), the pointer to the element and the index of
+ * the element in the pool.
+ */
+typedef void (rte_mempool_obj_ctor_t)(struct rte_mempool *, void *,
+ void *, unsigned);
+
+/**
+ * A mempool constructor callback function.
+ *
+ * Arguments are the mempool and the opaque pointer given by the user in
+ * rte_mempool_create().
+ */
+typedef void (rte_mempool_ctor_t)(struct rte_mempool *, void *);
+
+/**
+ * Creates a new mempool named *name* in memory.
+ *
+ * This function uses ``memzone_reserve()`` to allocate memory. The
+ * pool contains n elements of elt_size. Its size is set to n.
+ * All elements of the mempool are allocated together with the mempool header,
+ * in one physically continuous chunk of memory.
+ *
+ * @param name
+ * The name of the mempool.
+ * @param n
+ * The number of elements in the mempool. The optimum size (in terms of
+ * memory usage) for a mempool is when n is a power of two minus one:
+ * n = (2^q - 1).
+ * @param elt_size
+ * The size of each element.
+ * @param cache_size
+ * If cache_size is non-zero, the rte_mempool library will try to
+ * limit the accesses to the common lockless pool, by maintaining a
+ * per-lcore object cache. This argument must be lower or equal to
+ * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
+ * cache_size to have "n modulo cache_size == 0": if this is
+ * not the case, some elements will always stay in the pool and will
+ * never be used. The access to the per-lcore table is of course
+ * faster than the multi-producer/consumer pool. The cache can be
+ * disabled if the cache_size argument is set to 0; it can be useful to
+ * avoid losing objects in cache. Note that even if not used, the
+ * memory space for cache is always reserved in a mempool structure,
+ * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
+ * @param private_data_size
+ * The size of the private data appended after the mempool
+ * structure. This is useful for storing some private data after the
+ * mempool structure, as is done for rte_mbuf_pool for example.
+ * @param mp_init
+ * A function pointer that is called for initialization of the pool,
+ * before object initialization. The user can initialize the private
+ * data in this function if needed. This parameter can be NULL if
+ * not needed.
+ * @param mp_init_arg
+ * An opaque pointer to data that can be used in the mempool
+ * constructor function.
+ * @param obj_init
+ * A function pointer that is called for each object at
+ * initialization of the pool. The user can set some meta data in
+ * objects if needed. This parameter can be NULL if not needed.
+ * The obj_init() function takes the mempool pointer, the init_arg,
+ * the object pointer and the object number as parameters.
+ * @param obj_init_arg
+ * An opaque pointer to data that can be used as an argument for
+ * each call to the object constructor function.
+ * @param socket_id
+ * The *socket_id* argument is the socket identifier in the case of
+ * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
+ * constraint for the reserved zone.
+ * @param flags
+ * The *flags* arguments is an OR of following flags:
+ * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
+ * between channels in RAM: the pool allocator will add padding
+ * between objects depending on the hardware configuration. See
+ * Memory alignment constraints for details. If this flag is set,
+ * the allocator will just align them to a cache line.
+ * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
+ * cache-aligned. This flag removes this constraint, and no
+ * padding will be present between objects. This flag implies
+ * MEMPOOL_F_NO_SPREAD.
+ * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
+ * when using rte_mempool_put() or rte_mempool_put_bulk() is
+ * "single-producer". Otherwise, it is "multi-producers".
+ * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
+ * when using rte_mempool_get() or rte_mempool_get_bulk() is
+ * "single-consumer". Otherwise, it is "multi-consumers".
+ * @return
+ * The pointer to the new allocated mempool, on success. NULL on error
+ * with rte_errno set appropriately. Possible rte_errno values include:
+ * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
+ * - E_RTE_SECONDARY - function was called from a secondary process instance
+ * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
+ * - EINVAL - cache size provided is too large
+ * - ENOSPC - the maximum number of memzones has already been allocated
+ * - EEXIST - a memzone with the same name already exists
+ * - ENOMEM - no appropriate memory area found in which to create memzone
+ */
+struct rte_mempool *
+rte_mempool_create(const char *name, unsigned n, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags);
+
+/**
+ * Creates a new mempool named *name* in memory.
+ *
+ * This function uses ``memzone_reserve()`` to allocate memory. The
+ * pool contains n elements of elt_size. Its size is set to n.
+ * Depending on the input parameters, mempool elements can be either allocated
+ * together with the mempool header, or an externally provided memory buffer
+ * could be used to store mempool objects. In later case, that external
+ * memory buffer can consist of set of disjoint phyiscal pages.
+ *
+ * @param name
+ * The name of the mempool.
+ * @param n
+ * The number of elements in the mempool. The optimum size (in terms of
+ * memory usage) for a mempool is when n is a power of two minus one:
+ * n = (2^q - 1).
+ * @param elt_size
+ * The size of each element.
+ * @param cache_size
+ * If cache_size is non-zero, the rte_mempool library will try to
+ * limit the accesses to the common lockless pool, by maintaining a
+ * per-lcore object cache. This argument must be lower or equal to
+ * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
+ * cache_size to have "n modulo cache_size == 0": if this is
+ * not the case, some elements will always stay in the pool and will
+ * never be used. The access to the per-lcore table is of course
+ * faster than the multi-producer/consumer pool. The cache can be
+ * disabled if the cache_size argument is set to 0; it can be useful to
+ * avoid losing objects in cache. Note that even if not used, the
+ * memory space for cache is always reserved in a mempool structure,
+ * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
+ * @param private_data_size
+ * The size of the private data appended after the mempool
+ * structure. This is useful for storing some private data after the
+ * mempool structure, as is done for rte_mbuf_pool for example.
+ * @param mp_init
+ * A function pointer that is called for initialization of the pool,
+ * before object initialization. The user can initialize the private
+ * data in this function if needed. This parameter can be NULL if
+ * not needed.
+ * @param mp_init_arg
+ * An opaque pointer to data that can be used in the mempool
+ * constructor function.
+ * @param obj_init
+ * A function pointer that is called for each object at
+ * initialization of the pool. The user can set some meta data in
+ * objects if needed. This parameter can be NULL if not needed.
+ * The obj_init() function takes the mempool pointer, the init_arg,
+ * the object pointer and the object number as parameters.
+ * @param obj_init_arg
+ * An opaque pointer to data that can be used as an argument for
+ * each call to the object constructor function.
+ * @param socket_id
+ * The *socket_id* argument is the socket identifier in the case of
+ * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
+ * constraint for the reserved zone.
+ * @param flags
+ * The *flags* arguments is an OR of following flags:
+ * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
+ * between channels in RAM: the pool allocator will add padding
+ * between objects depending on the hardware configuration. See
+ * Memory alignment constraints for details. If this flag is set,
+ * the allocator will just align them to a cache line.
+ * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
+ * cache-aligned. This flag removes this constraint, and no
+ * padding will be present between objects. This flag implies
+ * MEMPOOL_F_NO_SPREAD.
+ * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
+ * when using rte_mempool_put() or rte_mempool_put_bulk() is
+ * "single-producer". Otherwise, it is "multi-producers".
+ * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
+ * when using rte_mempool_get() or rte_mempool_get_bulk() is
+ * "single-consumer". Otherwise, it is "multi-consumers".
+ * @param vaddr
+ * Virtual address of the externally allocated memory buffer.
+ * Will be used to store mempool objects.
+ * @param paddr
+ * Array of phyiscall addresses of the pages that comprises given memory
+ * buffer.
+ * @param pg_num
+ * Number of elements in the paddr array.
+ * @param pg_shift
+ * LOG2 of the physical pages size.
+ * @return
+ * The pointer to the new allocated mempool, on success. NULL on error
+ * with rte_errno set appropriately. Possible rte_errno values include:
+ * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
+ * - E_RTE_SECONDARY - function was called from a secondary process instance
+ * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
+ * - EINVAL - cache size provided is too large
+ * - ENOSPC - the maximum number of memzones has already been allocated
+ * - EEXIST - a memzone with the same name already exists
+ * - ENOMEM - no appropriate memory area found in which to create memzone
+ */
+struct rte_mempool *
+rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags, void *vaddr,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift);
+
+#ifdef RTE_LIBRTE_XEN_DOM0
+/**
+ * Creates a new mempool named *name* in memory on Xen Dom0.
+ *
+ * This function uses ``rte_mempool_xmem_create()`` to allocate memory. The
+ * pool contains n elements of elt_size. Its size is set to n.
+ * All elements of the mempool are allocated together with the mempool header,
+ * and memory buffer can consist of set of disjoint phyiscal pages.
+ *
+ * @param name
+ * The name of the mempool.
+ * @param n
+ * The number of elements in the mempool. The optimum size (in terms of
+ * memory usage) for a mempool is when n is a power of two minus one:
+ * n = (2^q - 1).
+ * @param elt_size
+ * The size of each element.
+ * @param cache_size
+ * If cache_size is non-zero, the rte_mempool library will try to
+ * limit the accesses to the common lockless pool, by maintaining a
+ * per-lcore object cache. This argument must be lower or equal to
+ * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
+ * cache_size to have "n modulo cache_size == 0": if this is
+ * not the case, some elements will always stay in the pool and will
+ * never be used. The access to the per-lcore table is of course
+ * faster than the multi-producer/consumer pool. The cache can be
+ * disabled if the cache_size argument is set to 0; it can be useful to
+ * avoid losing objects in cache. Note that even if not used, the
+ * memory space for cache is always reserved in a mempool structure,
+ * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
+ * @param private_data_size
+ * The size of the private data appended after the mempool
+ * structure. This is useful for storing some private data after the
+ * mempool structure, as is done for rte_mbuf_pool for example.
+ * @param mp_init
+ * A function pointer that is called for initialization of the pool,
+ * before object initialization. The user can initialize the private
+ * data in this function if needed. This parameter can be NULL if
+ * not needed.
+ * @param mp_init_arg
+ * An opaque pointer to data that can be used in the mempool
+ * constructor function.
+ * @param obj_init
+ * A function pointer that is called for each object at
+ * initialization of the pool. The user can set some meta data in
+ * objects if needed. This parameter can be NULL if not needed.
+ * The obj_init() function takes the mempool pointer, the init_arg,
+ * the object pointer and the object number as parameters.
+ * @param obj_init_arg
+ * An opaque pointer to data that can be used as an argument for
+ * each call to the object constructor function.
+ * @param socket_id
+ * The *socket_id* argument is the socket identifier in the case of
+ * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
+ * constraint for the reserved zone.
+ * @param flags
+ * The *flags* arguments is an OR of following flags:
+ * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
+ * between channels in RAM: the pool allocator will add padding
+ * between objects depending on the hardware configuration. See
+ * Memory alignment constraints for details. If this flag is set,
+ * the allocator will just align them to a cache line.
+ * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
+ * cache-aligned. This flag removes this constraint, and no
+ * padding will be present between objects. This flag implies
+ * MEMPOOL_F_NO_SPREAD.
+ * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
+ * when using rte_mempool_put() or rte_mempool_put_bulk() is
+ * "single-producer". Otherwise, it is "multi-producers".
+ * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
+ * when using rte_mempool_get() or rte_mempool_get_bulk() is
+ * "single-consumer". Otherwise, it is "multi-consumers".
+ * @return
+ * The pointer to the new allocated mempool, on success. NULL on error
+ * with rte_errno set appropriately. Possible rte_errno values include:
+ * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
+ * - E_RTE_SECONDARY - function was called from a secondary process instance
+ * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
+ * - EINVAL - cache size provided is too large
+ * - ENOSPC - the maximum number of memzones has already been allocated
+ * - EEXIST - a memzone with the same name already exists
+ * - ENOMEM - no appropriate memory area found in which to create memzone
+ */
+struct rte_mempool *
+rte_dom0_mempool_create(const char *name, unsigned n, unsigned elt_size,
+ unsigned cache_size, unsigned private_data_size,
+ rte_mempool_ctor_t *mp_init, void *mp_init_arg,
+ rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
+ int socket_id, unsigned flags);
+#endif
+
+/**
+ * Dump the status of the mempool to the console.
+ *
+ * @param f
+ * A pointer to a file for output
+ * @param mp
+ * A pointer to the mempool structure.
+ */
+void rte_mempool_dump(FILE *f, const struct rte_mempool *mp);
+
+/**
+ * @internal Put several objects back in the mempool; used internally.
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects).
+ * @param n
+ * The number of objects to store back in the mempool, must be strictly
+ * positive.
+ * @param is_mp
+ * Mono-producer (0) or multi-producers (1).
+ */
+static inline void __attribute__((always_inline))
+__mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n, int is_mp)
+{
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ struct rte_mempool_cache *cache;
+ uint32_t index;
+ void **cache_objs;
+ unsigned lcore_id = rte_lcore_id();
+ uint32_t cache_size = mp->cache_size;
+ uint32_t flushthresh = mp->cache_flushthresh;
+#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
+
+ /* increment stat now, adding in mempool always success */
+ __MEMPOOL_STAT_ADD(mp, put, n);
+
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ /* cache is not enabled or single producer */
+ if (unlikely(cache_size == 0 || is_mp == 0))
+ goto ring_enqueue;
+
+ /* Go straight to ring if put would overflow mem allocated for cache */
+ if (unlikely(n > RTE_MEMPOOL_CACHE_MAX_SIZE))
+ goto ring_enqueue;
+
+ cache = &mp->local_cache[lcore_id];
+ cache_objs = &cache->objs[cache->len];
+
+ /*
+ * The cache follows the following algorithm
+ * 1. Add the objects to the cache
+ * 2. Anything greater than the cache min value (if it crosses the
+ * cache flush threshold) is flushed to the ring.
+ */
+
+ /* Add elements back into the cache */
+ for (index = 0; index < n; ++index, obj_table++)
+ cache_objs[index] = *obj_table;
+
+ cache->len += n;
+
+ if (cache->len >= flushthresh) {
+ rte_ring_mp_enqueue_bulk(mp->ring, &cache->objs[cache_size],
+ cache->len - cache_size);
+ cache->len = cache_size;
+ }
+
+ return;
+
+ring_enqueue:
+#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
+
+ /* push remaining objects in ring */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ if (is_mp) {
+ if (rte_ring_mp_enqueue_bulk(mp->ring, obj_table, n) < 0)
+ rte_panic("cannot put objects in mempool\n");
+ }
+ else {
+ if (rte_ring_sp_enqueue_bulk(mp->ring, obj_table, n) < 0)
+ rte_panic("cannot put objects in mempool\n");
+ }
+#else
+ if (is_mp)
+ rte_ring_mp_enqueue_bulk(mp->ring, obj_table, n);
+ else
+ rte_ring_sp_enqueue_bulk(mp->ring, obj_table, n);
+#endif
+}
+
+
+/**
+ * Put several objects back in the mempool (multi-producers safe).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects).
+ * @param n
+ * The number of objects to add in the mempool from the obj_table.
+ */
+static inline void __attribute__((always_inline))
+rte_mempool_mp_put_bulk(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n)
+{
+ __mempool_check_cookies(mp, obj_table, n, 0);
+ __mempool_put_bulk(mp, obj_table, n, 1);
+}
+
+/**
+ * Put several objects back in the mempool (NOT multi-producers safe).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects).
+ * @param n
+ * The number of objects to add in the mempool from obj_table.
+ */
+static inline void
+rte_mempool_sp_put_bulk(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n)
+{
+ __mempool_check_cookies(mp, obj_table, n, 0);
+ __mempool_put_bulk(mp, obj_table, n, 0);
+}
+
+/**
+ * Put several objects back in the mempool.
+ *
+ * This function calls the multi-producer or the single-producer
+ * version depending on the default behavior that was specified at
+ * mempool creation time (see flags).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects).
+ * @param n
+ * The number of objects to add in the mempool from obj_table.
+ */
+static inline void __attribute__((always_inline))
+rte_mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n)
+{
+ __mempool_check_cookies(mp, obj_table, n, 0);
+ __mempool_put_bulk(mp, obj_table, n, !(mp->flags & MEMPOOL_F_SP_PUT));
+}
+
+/**
+ * Put one object in the mempool (multi-producers safe).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj
+ * A pointer to the object to be added.
+ */
+static inline void __attribute__((always_inline))
+rte_mempool_mp_put(struct rte_mempool *mp, void *obj)
+{
+ rte_mempool_mp_put_bulk(mp, &obj, 1);
+}
+
+/**
+ * Put one object back in the mempool (NOT multi-producers safe).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj
+ * A pointer to the object to be added.
+ */
+static inline void __attribute__((always_inline))
+rte_mempool_sp_put(struct rte_mempool *mp, void *obj)
+{
+ rte_mempool_sp_put_bulk(mp, &obj, 1);
+}
+
+/**
+ * Put one object back in the mempool.
+ *
+ * This function calls the multi-producer or the single-producer
+ * version depending on the default behavior that was specified at
+ * mempool creation time (see flags).
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj
+ * A pointer to the object to be added.
+ */
+static inline void __attribute__((always_inline))
+rte_mempool_put(struct rte_mempool *mp, void *obj)
+{
+ rte_mempool_put_bulk(mp, &obj, 1);
+}
+
+/**
+ * @internal Get several objects from the mempool; used internally.
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects).
+ * @param n
+ * The number of objects to get, must be strictly positive.
+ * @param is_mc
+ * Mono-consumer (0) or multi-consumers (1).
+ * @return
+ * - >=0: Success; number of objects supplied.
+ * - <0: Error; code of ring dequeue function.
+ */
+static inline int __attribute__((always_inline))
+__mempool_get_bulk(struct rte_mempool *mp, void **obj_table,
+ unsigned n, int is_mc)
+{
+ int ret;
+#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
+ struct rte_mempool_cache *cache;
+ uint32_t index, len;
+ void **cache_objs;
+ unsigned lcore_id = rte_lcore_id();
+ uint32_t cache_size = mp->cache_size;
+
+ /* cache is not enabled or single consumer */
+ if (unlikely(cache_size == 0 || is_mc == 0 || n >= cache_size))
+ goto ring_dequeue;
+
+ cache = &mp->local_cache[lcore_id];
+ cache_objs = cache->objs;
+
+ /* Can this be satisfied from the cache? */
+ if (cache->len < n) {
+ /* No. Backfill the cache first, and then fill from it */
+ uint32_t req = n + (cache_size - cache->len);
+
+ /* How many do we require i.e. number to fill the cache + the request */
+ ret = rte_ring_mc_dequeue_bulk(mp->ring, &cache->objs[cache->len], req);
+ if (unlikely(ret < 0)) {
+ /*
+ * In the offchance that we are buffer constrained,
+ * where we are not able to allocate cache + n, go to
+ * the ring directly. If that fails, we are truly out of
+ * buffers.
+ */
+ goto ring_dequeue;
+ }
+
+ cache->len += req;
+ }
+
+ /* Now fill in the response ... */
+ for (index = 0, len = cache->len - 1; index < n; ++index, len--, obj_table++)
+ *obj_table = cache_objs[len];
+
+ cache->len -= n;
+
+ __MEMPOOL_STAT_ADD(mp, get_success, n);
+
+ return 0;
+
+ring_dequeue:
+#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
+
+ /* get remaining objects from ring */
+ if (is_mc)
+ ret = rte_ring_mc_dequeue_bulk(mp->ring, obj_table, n);
+ else
+ ret = rte_ring_sc_dequeue_bulk(mp->ring, obj_table, n);
+
+ if (ret < 0)
+ __MEMPOOL_STAT_ADD(mp, get_fail, n);
+ else
+ __MEMPOOL_STAT_ADD(mp, get_success, n);
+
+ return ret;
+}
+
+/**
+ * Get several objects from the mempool (multi-consumers safe).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects) that will be filled.
+ * @param n
+ * The number of objects to get from mempool to obj_table.
+ * @return
+ * - 0: Success; objects taken.
+ * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_mc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
+{
+ int ret;
+ ret = __mempool_get_bulk(mp, obj_table, n, 1);
+ if (ret == 0)
+ __mempool_check_cookies(mp, obj_table, n, 1);
+ return ret;
+}
+
+/**
+ * Get several objects from the mempool (NOT multi-consumers safe).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects) that will be filled.
+ * @param n
+ * The number of objects to get from the mempool to obj_table.
+ * @return
+ * - 0: Success; objects taken.
+ * - -ENOENT: Not enough entries in the mempool; no object is
+ * retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_sc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
+{
+ int ret;
+ ret = __mempool_get_bulk(mp, obj_table, n, 0);
+ if (ret == 0)
+ __mempool_check_cookies(mp, obj_table, n, 1);
+ return ret;
+}
+
+/**
+ * Get several objects from the mempool.
+ *
+ * This function calls the multi-consumers or the single-consumer
+ * version, depending on the default behaviour that was specified at
+ * mempool creation time (see flags).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_table
+ * A pointer to a table of void * pointers (objects) that will be filled.
+ * @param n
+ * The number of objects to get from the mempool to obj_table.
+ * @return
+ * - 0: Success; objects taken
+ * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
+{
+ int ret;
+ ret = __mempool_get_bulk(mp, obj_table, n,
+ !(mp->flags & MEMPOOL_F_SC_GET));
+ if (ret == 0)
+ __mempool_check_cookies(mp, obj_table, n, 1);
+ return ret;
+}
+
+/**
+ * Get one object from the mempool (multi-consumers safe).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_p
+ * A pointer to a void * pointer (object) that will be filled.
+ * @return
+ * - 0: Success; objects taken.
+ * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_mc_get(struct rte_mempool *mp, void **obj_p)
+{
+ return rte_mempool_mc_get_bulk(mp, obj_p, 1);
+}
+
+/**
+ * Get one object from the mempool (NOT multi-consumers safe).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_p
+ * A pointer to a void * pointer (object) that will be filled.
+ * @return
+ * - 0: Success; objects taken.
+ * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_sc_get(struct rte_mempool *mp, void **obj_p)
+{
+ return rte_mempool_sc_get_bulk(mp, obj_p, 1);
+}
+
+/**
+ * Get one object from the mempool.
+ *
+ * This function calls the multi-consumers or the single-consumer
+ * version, depending on the default behavior that was specified at
+ * mempool creation (see flags).
+ *
+ * If cache is enabled, objects will be retrieved first from cache,
+ * subsequently from the common pool. Note that it can return -ENOENT when
+ * the local cache and common pool are empty, even if cache from other
+ * lcores are full.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param obj_p
+ * A pointer to a void * pointer (object) that will be filled.
+ * @return
+ * - 0: Success; objects taken.
+ * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
+ */
+static inline int __attribute__((always_inline))
+rte_mempool_get(struct rte_mempool *mp, void **obj_p)
+{
+ return rte_mempool_get_bulk(mp, obj_p, 1);
+}
+
+/**
+ * Return the number of entries in the mempool.
+ *
+ * When cache is enabled, this function has to browse the length of
+ * all lcores, so it should not be used in a data path, but only for
+ * debug purposes.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * The number of entries in the mempool.
+ */
+unsigned rte_mempool_count(const struct rte_mempool *mp);
+
+/**
+ * Return the number of free entries in the mempool ring.
+ * i.e. how many entries can be freed back to the mempool.
+ *
+ * NOTE: This corresponds to the number of elements *allocated* from the
+ * memory pool, not the number of elements in the pool itself. To count
+ * the number elements currently available in the pool, use "rte_mempool_count"
+ *
+ * When cache is enabled, this function has to browse the length of
+ * all lcores, so it should not be used in a data path, but only for
+ * debug purposes.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * The number of free entries in the mempool.
+ */
+static inline unsigned
+rte_mempool_free_count(const struct rte_mempool *mp)
+{
+ return mp->size - rte_mempool_count(mp);
+}
+
+/**
+ * Test if the mempool is full.
+ *
+ * When cache is enabled, this function has to browse the length of all
+ * lcores, so it should not be used in a data path, but only for debug
+ * purposes.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * - 1: The mempool is full.
+ * - 0: The mempool is not full.
+ */
+static inline int
+rte_mempool_full(const struct rte_mempool *mp)
+{
+ return !!(rte_mempool_count(mp) == mp->size);
+}
+
+/**
+ * Test if the mempool is empty.
+ *
+ * When cache is enabled, this function has to browse the length of all
+ * lcores, so it should not be used in a data path, but only for debug
+ * purposes.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * - 1: The mempool is empty.
+ * - 0: The mempool is not empty.
+ */
+static inline int
+rte_mempool_empty(const struct rte_mempool *mp)
+{
+ return !!(rte_mempool_count(mp) == 0);
+}
+
+/**
+ * Return the physical address of elt, which is an element of the pool mp.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @param elt
+ * A pointer (virtual address) to the element of the pool.
+ * @return
+ * The physical address of the elt element.
+ */
+static inline phys_addr_t
+rte_mempool_virt2phy(const struct rte_mempool *mp, const void *elt)
+{
+ if (rte_eal_has_hugepages()) {
+ uintptr_t off;
+
+ off = (const char *)elt - (const char *)mp->elt_va_start;
+ return (mp->elt_pa[off >> mp->pg_shift] + (off & mp->pg_mask));
+ } else {
+ /*
+ * If huge pages are disabled, we cannot assume the
+ * memory region to be physically contiguous.
+ * Lookup for each element.
+ */
+ return rte_mem_virt2phy(elt);
+ }
+}
+
+/**
+ * Check the consistency of mempool objects.
+ *
+ * Verify the coherency of fields in the mempool structure. Also check
+ * that the cookies of mempool objects (even the ones that are not
+ * present in pool) have a correct value. If not, a panic will occur.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ */
+void rte_mempool_audit(const struct rte_mempool *mp);
+
+/**
+ * Return a pointer to the private data in an mempool structure.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * A pointer to the private data.
+ */
+static inline void *rte_mempool_get_priv(struct rte_mempool *mp)
+{
+ return (char *)mp + MEMPOOL_HEADER_SIZE(mp, mp->pg_num);
+}
+
+/**
+ * Dump the status of all mempools on the console
+ *
+ * @param f
+ * A pointer to a file for output
+ */
+void rte_mempool_list_dump(FILE *f);
+
+/**
+ * Search a mempool from its name
+ *
+ * @param name
+ * The name of the mempool.
+ * @return
+ * The pointer to the mempool matching the name, or NULL if not found.
+ * NULL on error
+ * with rte_errno set appropriately. Possible rte_errno values include:
+ * - ENOENT - required entry not available to return.
+ *
+ */
+struct rte_mempool *rte_mempool_lookup(const char *name);
+
+/**
+ * Given a desired size of the mempool element and mempool flags,
+ * caluclates header, trailer, body and total sizes of the mempool object.
+ * @param elt_size
+ * The size of each element.
+ * @param flags
+ * The flags used for the mempool creation.
+ * Consult rte_mempool_create() for more information about possible values.
+ * The size of each element.
+ * @return
+ * Total size of the mempool object.
+ */
+uint32_t rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,
+ struct rte_mempool_objsz *sz);
+
+/**
+ * Calculate maximum amount of memory required to store given number of objects.
+ * Assumes that the memory buffer will be aligned at page boundary.
+ * Note, that if object size is bigger then page size, then it assumes that
+ * we have a subsets of physically continuous pages big enough to store
+ * at least one object.
+ * @param elt_num
+ * Number of elements.
+ * @param elt_sz
+ * The size of each element.
+ * @param pg_shift
+ * LOG2 of the physical pages size.
+ * @return
+ * Required memory size aligned at page boundary.
+ */
+size_t rte_mempool_xmem_size(uint32_t elt_num, size_t elt_sz,
+ uint32_t pg_shift);
+
+/**
+ * Calculate how much memory would be actually required with the given
+ * memory footprint to store required number of objects.
+ * @param vaddr
+ * Virtual address of the externally allocated memory buffer.
+ * Will be used to store mempool objects.
+ * @param elt_num
+ * Number of elements.
+ * @param elt_sz
+ * The size of each element.
+ * @param paddr
+ * Array of phyiscall addresses of the pages that comprises given memory
+ * buffer.
+ * @param pg_num
+ * Number of elements in the paddr array.
+ * @param pg_shift
+ * LOG2 of the physical pages size.
+ * @return
+ * Number of bytes needed to store given number of objects,
+ * aligned to the given page size.
+ * If provided memory buffer is not big enough:
+ * (-1) * actual number of elemnts that can be stored in that buffer.
+ */
+ssize_t rte_mempool_xmem_usage(void *vaddr, uint32_t elt_num, size_t elt_sz,
+ const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift);
+
+/**
+ * Walk list of all memory pools
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ */
+void rte_mempool_walk(void (*func)(const struct rte_mempool *, void *arg),
+ void *arg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_MEMPOOL_H_ */
diff --git a/lib/librte_mempool/Makefile b/lib/librte_mempool/Makefile
deleted file mode 100644
index 9939e10..0000000
--- a/lib/librte_mempool/Makefile
+++ /dev/null
@@ -1,51 +0,0 @@
-# BSD LICENSE
-#
-# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in
-# the documentation and/or other materials provided with the
-# distribution.
-# * Neither the name of Intel Corporation nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-include $(RTE_SDK)/mk/rte.vars.mk
-
-# library name
-LIB = librte_mempool.a
-
-CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
-
-# all source are stored in SRCS-y
-SRCS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += rte_mempool.c
-ifeq ($(CONFIG_RTE_LIBRTE_XEN_DOM0),y)
-SRCS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += rte_dom0_mempool.c
-endif
-# install includes
-SYMLINK-$(CONFIG_RTE_LIBRTE_MEMPOOL)-include := rte_mempool.h
-
-# this lib needs eal, rte_ring and rte_malloc
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += lib/librte_eal lib/librte_ring
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MEMPOOL) += lib/librte_malloc
-
-include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/lib/librte_mempool/rte_dom0_mempool.c b/lib/librte_mempool/rte_dom0_mempool.c
deleted file mode 100644
index 9ec68fb..0000000
--- a/lib/librte_mempool/rte_dom0_mempool.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <stdarg.h>
-#include <inttypes.h>
-#include <errno.h>
-#include <sys/queue.h>
-
-#include <rte_common.h>
-#include <rte_log.h>
-#include <rte_debug.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_atomic.h>
-#include <rte_launch.h>
-#include <rte_tailq.h>
-#include <rte_eal.h>
-#include <rte_eal_memconfig.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-#include <rte_branch_prediction.h>
-#include <rte_ring.h>
-#include <rte_errno.h>
-#include <rte_string_fns.h>
-#include <rte_spinlock.h>
-
-#include "rte_mempool.h"
-
-static void
-get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num,
- uint32_t pg_sz, uint32_t memseg_id)
-{
- uint32_t i;
- uint64_t virt_addr, mfn_id;
- struct rte_mem_config *mcfg;
- uint32_t page_size = getpagesize();
-
- /* get pointer to global configuration */
- mcfg = rte_eal_get_configuration()->mem_config;
- virt_addr =(uintptr_t) mcfg->memseg[memseg_id].addr;
-
- for (i = 0; i != pg_num; i++) {
- mfn_id = ((uintptr_t)va + i * pg_sz - virt_addr) / RTE_PGSIZE_2M;
- pa[i] = mcfg->memseg[memseg_id].mfn[mfn_id] * page_size;
- }
-}
-
-/* create the mempool for supporting Dom0 */
-struct rte_mempool *
-rte_dom0_mempool_create(const char *name, unsigned elt_num, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags)
-{
- struct rte_mempool *mp = NULL;
- phys_addr_t *pa;
- char *va;
- size_t sz;
- uint32_t pg_num, pg_shift, pg_sz, total_size;
- const struct rte_memzone *mz;
- char mz_name[RTE_MEMZONE_NAMESIZE];
- int mz_flags = RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY;
-
- pg_sz = RTE_PGSIZE_2M;
-
- pg_shift = rte_bsf32(pg_sz);
- total_size = rte_mempool_calc_obj_size(elt_size, flags, NULL);
-
- /* calc max memory size and max number of pages needed. */
- sz = rte_mempool_xmem_size(elt_num, total_size, pg_shift) +
- RTE_PGSIZE_2M;
- pg_num = sz >> pg_shift;
-
- /* extract physical mappings of the allocated memory. */
- pa = calloc(pg_num, sizeof (*pa));
- if (pa == NULL)
- return mp;
-
- snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_OBJ_NAME, name);
- mz = rte_memzone_reserve(mz_name, sz, socket_id, mz_flags);
- if (mz == NULL) {
- free(pa);
- return mp;
- }
-
- va = (char *)RTE_ALIGN_CEIL((uintptr_t)mz->addr, RTE_PGSIZE_2M);
- /* extract physical mappings of the allocated memory. */
- get_phys_map(va, pa, pg_num, pg_sz, mz->memseg_id);
-
- mp = rte_mempool_xmem_create(name, elt_num, elt_size,
- cache_size, private_data_size,
- mp_init, mp_init_arg,
- obj_init, obj_init_arg,
- socket_id, flags, va, pa, pg_num, pg_shift);
-
- free(pa);
-
- return (mp);
-}
diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
deleted file mode 100644
index 4cf6c25..0000000
--- a/lib/librte_mempool/rte_mempool.c
+++ /dev/null
@@ -1,901 +0,0 @@
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <errno.h>
-#include <sys/queue.h>
-
-#include <rte_common.h>
-#include <rte_log.h>
-#include <rte_debug.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_malloc.h>
-#include <rte_atomic.h>
-#include <rte_launch.h>
-#include <rte_tailq.h>
-#include <rte_eal.h>
-#include <rte_eal_memconfig.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-#include <rte_branch_prediction.h>
-#include <rte_ring.h>
-#include <rte_errno.h>
-#include <rte_string_fns.h>
-#include <rte_spinlock.h>
-
-#include "rte_mempool.h"
-
-TAILQ_HEAD(rte_mempool_list, rte_tailq_entry);
-
-#define CACHE_FLUSHTHRESH_MULTIPLIER 1.5
-
-/*
- * return the greatest common divisor between a and b (fast algorithm)
- *
- */
-static unsigned get_gcd(unsigned a, unsigned b)
-{
- unsigned c;
-
- if (0 == a)
- return b;
- if (0 == b)
- return a;
-
- if (a < b) {
- c = a;
- a = b;
- b = c;
- }
-
- while (b != 0) {
- c = a % b;
- a = b;
- b = c;
- }
-
- return a;
-}
-
-/*
- * Depending on memory configuration, objects addresses are spread
- * between channels and ranks in RAM: the pool allocator will add
- * padding between objects. This function return the new size of the
- * object.
- */
-static unsigned optimize_object_size(unsigned obj_size)
-{
- unsigned nrank, nchan;
- unsigned new_obj_size;
-
- /* get number of channels */
- nchan = rte_memory_get_nchannel();
- if (nchan == 0)
- nchan = 1;
-
- nrank = rte_memory_get_nrank();
- if (nrank == 0)
- nrank = 1;
-
- /* process new object size */
- new_obj_size = (obj_size + RTE_CACHE_LINE_MASK) / RTE_CACHE_LINE_SIZE;
- while (get_gcd(new_obj_size, nrank * nchan) != 1)
- new_obj_size++;
- return new_obj_size * RTE_CACHE_LINE_SIZE;
-}
-
-static void
-mempool_add_elem(struct rte_mempool *mp, void *obj, uint32_t obj_idx,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg)
-{
- struct rte_mempool **mpp;
-
- obj = (char *)obj + mp->header_size;
-
- /* set mempool ptr in header */
- mpp = __mempool_from_obj(obj);
- *mpp = mp;
-
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- __mempool_write_header_cookie(obj, 1);
- __mempool_write_trailer_cookie(obj);
-#endif
- /* call the initializer */
- if (obj_init)
- obj_init(mp, obj_init_arg, obj, obj_idx);
-
- /* enqueue in ring */
- rte_ring_sp_enqueue(mp->ring, obj);
-}
-
-uint32_t
-rte_mempool_obj_iter(void *vaddr, uint32_t elt_num, size_t elt_sz, size_t align,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift,
- rte_mempool_obj_iter_t obj_iter, void *obj_iter_arg)
-{
- uint32_t i, j, k;
- uint32_t pgn;
- uintptr_t end, start, va;
- uintptr_t pg_sz;
-
- pg_sz = (uintptr_t)1 << pg_shift;
- va = (uintptr_t)vaddr;
-
- i = 0;
- j = 0;
-
- while (i != elt_num && j != pg_num) {
-
- start = RTE_ALIGN_CEIL(va, align);
- end = start + elt_sz;
-
- pgn = (end >> pg_shift) - (start >> pg_shift);
- pgn += j;
-
- /* do we have enough space left for the next element. */
- if (pgn >= pg_num)
- break;
-
- for (k = j;
- k != pgn &&
- paddr[k] + pg_sz == paddr[k + 1];
- k++)
- ;
-
- /*
- * if next pgn chunks of memory physically continuous,
- * use it to create next element.
- * otherwise, just skip that chunk unused.
- */
- if (k == pgn) {
- if (obj_iter != NULL)
- obj_iter(obj_iter_arg, (void *)start,
- (void *)end, i);
- va = end;
- j = pgn;
- i++;
- } else {
- va = RTE_ALIGN_CEIL((va + 1), pg_sz);
- j++;
- }
- }
-
- return (i);
-}
-
-/*
- * Populate mempool with the objects.
- */
-
-struct mempool_populate_arg {
- struct rte_mempool *mp;
- rte_mempool_obj_ctor_t *obj_init;
- void *obj_init_arg;
-};
-
-static void
-mempool_obj_populate(void *arg, void *start, void *end, uint32_t idx)
-{
- struct mempool_populate_arg *pa = arg;
-
- mempool_add_elem(pa->mp, start, idx, pa->obj_init, pa->obj_init_arg);
- pa->mp->elt_va_end = (uintptr_t)end;
-}
-
-static void
-mempool_populate(struct rte_mempool *mp, size_t num, size_t align,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg)
-{
- uint32_t elt_sz;
- struct mempool_populate_arg arg;
-
- elt_sz = mp->elt_size + mp->header_size + mp->trailer_size;
- arg.mp = mp;
- arg.obj_init = obj_init;
- arg.obj_init_arg = obj_init_arg;
-
- mp->size = rte_mempool_obj_iter((void *)mp->elt_va_start,
- num, elt_sz, align,
- mp->elt_pa, mp->pg_num, mp->pg_shift,
- mempool_obj_populate, &arg);
-}
-
-uint32_t
-rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,
- struct rte_mempool_objsz *sz)
-{
- struct rte_mempool_objsz lsz;
-
- sz = (sz != NULL) ? sz : &lsz;
-
- /*
- * In header, we have at least the pointer to the pool, and
- * optionaly a 64 bits cookie.
- */
- sz->header_size = 0;
- sz->header_size += sizeof(struct rte_mempool *); /* ptr to pool */
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- sz->header_size += sizeof(uint64_t); /* cookie */
-#endif
- if ((flags & MEMPOOL_F_NO_CACHE_ALIGN) == 0)
- sz->header_size = RTE_ALIGN_CEIL(sz->header_size,
- RTE_CACHE_LINE_SIZE);
-
- /* trailer contains the cookie in debug mode */
- sz->trailer_size = 0;
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- sz->trailer_size += sizeof(uint64_t); /* cookie */
-#endif
- /* element size is 8 bytes-aligned at least */
- sz->elt_size = RTE_ALIGN_CEIL(elt_size, sizeof(uint64_t));
-
- /* expand trailer to next cache line */
- if ((flags & MEMPOOL_F_NO_CACHE_ALIGN) == 0) {
- sz->total_size = sz->header_size + sz->elt_size +
- sz->trailer_size;
- sz->trailer_size += ((RTE_CACHE_LINE_SIZE -
- (sz->total_size & RTE_CACHE_LINE_MASK)) &
- RTE_CACHE_LINE_MASK);
- }
-
- /*
- * increase trailer to add padding between objects in order to
- * spread them across memory channels/ranks
- */
- if ((flags & MEMPOOL_F_NO_SPREAD) == 0) {
- unsigned new_size;
- new_size = optimize_object_size(sz->header_size + sz->elt_size +
- sz->trailer_size);
- sz->trailer_size = new_size - sz->header_size - sz->elt_size;
- }
-
- if (! rte_eal_has_hugepages()) {
- /*
- * compute trailer size so that pool elements fit exactly in
- * a standard page
- */
- int page_size = getpagesize();
- int new_size = page_size - sz->header_size - sz->elt_size;
- if (new_size < 0 || (unsigned int)new_size < sz->trailer_size) {
- printf("When hugepages are disabled, pool objects "
- "can't exceed PAGE_SIZE: %d + %d + %d > %d\n",
- sz->header_size, sz->elt_size, sz->trailer_size,
- page_size);
- return 0;
- }
- sz->trailer_size = new_size;
- }
-
- /* this is the size of an object, including header and trailer */
- sz->total_size = sz->header_size + sz->elt_size + sz->trailer_size;
-
- return (sz->total_size);
-}
-
-
-/*
- * Calculate maximum amount of memory required to store given number of objects.
- */
-size_t
-rte_mempool_xmem_size(uint32_t elt_num, size_t elt_sz, uint32_t pg_shift)
-{
- size_t n, pg_num, pg_sz, sz;
-
- pg_sz = (size_t)1 << pg_shift;
-
- if ((n = pg_sz / elt_sz) > 0) {
- pg_num = (elt_num + n - 1) / n;
- sz = pg_num << pg_shift;
- } else {
- sz = RTE_ALIGN_CEIL(elt_sz, pg_sz) * elt_num;
- }
-
- return (sz);
-}
-
-/*
- * Calculate how much memory would be actually required with the
- * given memory footprint to store required number of elements.
- */
-static void
-mempool_lelem_iter(void *arg, __rte_unused void *start, void *end,
- __rte_unused uint32_t idx)
-{
- *(uintptr_t *)arg = (uintptr_t)end;
-}
-
-ssize_t
-rte_mempool_xmem_usage(void *vaddr, uint32_t elt_num, size_t elt_sz,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift)
-{
- uint32_t n;
- uintptr_t va, uv;
- size_t pg_sz, usz;
-
- pg_sz = (size_t)1 << pg_shift;
- va = (uintptr_t)vaddr;
- uv = va;
-
- if ((n = rte_mempool_obj_iter(vaddr, elt_num, elt_sz, 1,
- paddr, pg_num, pg_shift, mempool_lelem_iter,
- &uv)) != elt_num) {
- return (-n);
- }
-
- uv = RTE_ALIGN_CEIL(uv, pg_sz);
- usz = uv - va;
- return (usz);
-}
-
-/* create the mempool */
-struct rte_mempool *
-rte_mempool_create(const char *name, unsigned n, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags)
-{
-#ifdef RTE_LIBRTE_XEN_DOM0
- return (rte_dom0_mempool_create(name, n, elt_size,
- cache_size, private_data_size,
- mp_init, mp_init_arg,
- obj_init, obj_init_arg,
- socket_id, flags));
-#else
- return (rte_mempool_xmem_create(name, n, elt_size,
- cache_size, private_data_size,
- mp_init, mp_init_arg,
- obj_init, obj_init_arg,
- socket_id, flags,
- NULL, NULL, MEMPOOL_PG_NUM_DEFAULT, MEMPOOL_PG_SHIFT_MAX));
-#endif
-}
-
-/*
- * Create the mempool over already allocated chunk of memory.
- * That external memory buffer can consists of physically disjoint pages.
- * Setting vaddr to NULL, makes mempool to fallback to original behaviour
- * and allocate space for mempool and it's elements as one big chunk of
- * physically continuos memory.
- * */
-struct rte_mempool *
-rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags, void *vaddr,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift)
-{
- char mz_name[RTE_MEMZONE_NAMESIZE];
- char rg_name[RTE_RING_NAMESIZE];
- struct rte_mempool *mp = NULL;
- struct rte_tailq_entry *te;
- struct rte_ring *r;
- const struct rte_memzone *mz;
- size_t mempool_size;
- int mz_flags = RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY;
- int rg_flags = 0;
- void *obj;
- struct rte_mempool_objsz objsz;
- void *startaddr;
- int page_size = getpagesize();
-
- /* compilation-time checks */
- RTE_BUILD_BUG_ON((sizeof(struct rte_mempool) &
- RTE_CACHE_LINE_MASK) != 0);
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- RTE_BUILD_BUG_ON((sizeof(struct rte_mempool_cache) &
- RTE_CACHE_LINE_MASK) != 0);
- RTE_BUILD_BUG_ON((offsetof(struct rte_mempool, local_cache) &
- RTE_CACHE_LINE_MASK) != 0);
-#endif
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- RTE_BUILD_BUG_ON((sizeof(struct rte_mempool_debug_stats) &
- RTE_CACHE_LINE_MASK) != 0);
- RTE_BUILD_BUG_ON((offsetof(struct rte_mempool, stats) &
- RTE_CACHE_LINE_MASK) != 0);
-#endif
-
- /* check that we have an initialised tail queue */
- if (RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL,
- rte_mempool_list) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
-
- /* asked cache too big */
- if (cache_size > RTE_MEMPOOL_CACHE_MAX_SIZE) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- /* check that we have both VA and PA */
- if (vaddr != NULL && paddr == NULL) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- /* Check that pg_num and pg_shift parameters are valid. */
- if (pg_num < RTE_DIM(mp->elt_pa) || pg_shift > MEMPOOL_PG_SHIFT_MAX) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- /* "no cache align" imply "no spread" */
- if (flags & MEMPOOL_F_NO_CACHE_ALIGN)
- flags |= MEMPOOL_F_NO_SPREAD;
-
- /* ring flags */
- if (flags & MEMPOOL_F_SP_PUT)
- rg_flags |= RING_F_SP_ENQ;
- if (flags & MEMPOOL_F_SC_GET)
- rg_flags |= RING_F_SC_DEQ;
-
- /* calculate mempool object sizes. */
- if (!rte_mempool_calc_obj_size(elt_size, flags, &objsz)) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- rte_rwlock_write_lock(RTE_EAL_MEMPOOL_RWLOCK);
-
- /* allocate the ring that will be used to store objects */
- /* Ring functions will return appropriate errors if we are
- * running as a secondary process etc., so no checks made
- * in this function for that condition */
- snprintf(rg_name, sizeof(rg_name), RTE_MEMPOOL_MZ_FORMAT, name);
- r = rte_ring_create(rg_name, rte_align32pow2(n+1), socket_id, rg_flags);
- if (r == NULL)
- goto exit;
-
- /*
- * reserve a memory zone for this mempool: private data is
- * cache-aligned
- */
- private_data_size = (private_data_size +
- RTE_CACHE_LINE_MASK) & (~RTE_CACHE_LINE_MASK);
-
- if (! rte_eal_has_hugepages()) {
- /*
- * expand private data size to a whole page, so that the
- * first pool element will start on a new standard page
- */
- int head = sizeof(struct rte_mempool);
- int new_size = (private_data_size + head) % page_size;
- if (new_size) {
- private_data_size += page_size - new_size;
- }
- }
-
- /* try to allocate tailq entry */
- te = rte_zmalloc("MEMPOOL_TAILQ_ENTRY", sizeof(*te), 0);
- if (te == NULL) {
- RTE_LOG(ERR, MEMPOOL, "Cannot allocate tailq entry!\n");
- goto exit;
- }
-
- /*
- * If user provided an external memory buffer, then use it to
- * store mempool objects. Otherwise reserve memzone big enough to
- * hold mempool header and metadata plus mempool objects.
- */
- mempool_size = MEMPOOL_HEADER_SIZE(mp, pg_num) + private_data_size;
- if (vaddr == NULL)
- mempool_size += (size_t)objsz.total_size * n;
-
- if (! rte_eal_has_hugepages()) {
- /*
- * we want the memory pool to start on a page boundary,
- * because pool elements crossing page boundaries would
- * result in discontiguous physical addresses
- */
- mempool_size += page_size;
- }
-
- snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_MZ_FORMAT, name);
-
- mz = rte_memzone_reserve(mz_name, mempool_size, socket_id, mz_flags);
-
- /*
- * no more memory: in this case we loose previously reserved
- * space for the as we cannot free it
- */
- if (mz == NULL) {
- rte_free(te);
- goto exit;
- }
-
- if (rte_eal_has_hugepages()) {
- startaddr = (void*)mz->addr;
- } else {
- /* align memory pool start address on a page boundary */
- unsigned long addr = (unsigned long)mz->addr;
- if (addr & (page_size - 1)) {
- addr += page_size;
- addr &= ~(page_size - 1);
- }
- startaddr = (void*)addr;
- }
-
- /* init the mempool structure */
- mp = startaddr;
- memset(mp, 0, sizeof(*mp));
- snprintf(mp->name, sizeof(mp->name), "%s", name);
- mp->phys_addr = mz->phys_addr;
- mp->ring = r;
- mp->size = n;
- mp->flags = flags;
- mp->elt_size = objsz.elt_size;
- mp->header_size = objsz.header_size;
- mp->trailer_size = objsz.trailer_size;
- mp->cache_size = cache_size;
- mp->cache_flushthresh = (uint32_t)
- (cache_size * CACHE_FLUSHTHRESH_MULTIPLIER);
- mp->private_data_size = private_data_size;
-
- /* calculate address of the first element for continuous mempool. */
- obj = (char *)mp + MEMPOOL_HEADER_SIZE(mp, pg_num) +
- private_data_size;
-
- /* populate address translation fields. */
- mp->pg_num = pg_num;
- mp->pg_shift = pg_shift;
- mp->pg_mask = RTE_LEN2MASK(mp->pg_shift, typeof(mp->pg_mask));
-
- /* mempool elements allocated together with mempool */
- if (vaddr == NULL) {
- mp->elt_va_start = (uintptr_t)obj;
- mp->elt_pa[0] = mp->phys_addr +
- (mp->elt_va_start - (uintptr_t)mp);
-
- /* mempool elements in a separate chunk of memory. */
- } else {
- mp->elt_va_start = (uintptr_t)vaddr;
- memcpy(mp->elt_pa, paddr, sizeof (mp->elt_pa[0]) * pg_num);
- }
-
- mp->elt_va_end = mp->elt_va_start;
-
- /* call the initializer */
- if (mp_init)
- mp_init(mp, mp_init_arg);
-
- mempool_populate(mp, n, 1, obj_init, obj_init_arg);
-
- te->data = (void *) mp;
-
- RTE_EAL_TAILQ_INSERT_TAIL(RTE_TAILQ_MEMPOOL, rte_mempool_list, te);
-
-exit:
- rte_rwlock_write_unlock(RTE_EAL_MEMPOOL_RWLOCK);
-
- return mp;
-}
-
-/* Return the number of entries in the mempool */
-unsigned
-rte_mempool_count(const struct rte_mempool *mp)
-{
- unsigned count;
-
- count = rte_ring_count(mp->ring);
-
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- {
- unsigned lcore_id;
- if (mp->cache_size == 0)
- return count;
-
- for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
- count += mp->local_cache[lcore_id].len;
- }
-#endif
-
- /*
- * due to race condition (access to len is not locked), the
- * total can be greater than size... so fix the result
- */
- if (count > mp->size)
- return mp->size;
- return count;
-}
-
-/* dump the cache status */
-static unsigned
-rte_mempool_dump_cache(FILE *f, const struct rte_mempool *mp)
-{
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- unsigned lcore_id;
- unsigned count = 0;
- unsigned cache_count;
-
- fprintf(f, " cache infos:\n");
- fprintf(f, " cache_size=%"PRIu32"\n", mp->cache_size);
- for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
- cache_count = mp->local_cache[lcore_id].len;
- fprintf(f, " cache_count[%u]=%u\n", lcore_id, cache_count);
- count += cache_count;
- }
- fprintf(f, " total_cache_count=%u\n", count);
- return count;
-#else
- RTE_SET_USED(mp);
- fprintf(f, " cache disabled\n");
- return 0;
-#endif
-}
-
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
-/* check cookies before and after objects */
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic ignored "-Wcast-qual"
-#endif
-
-struct mempool_audit_arg {
- const struct rte_mempool *mp;
- uintptr_t obj_end;
- uint32_t obj_num;
-};
-
-static void
-mempool_obj_audit(void *arg, void *start, void *end, uint32_t idx)
-{
- struct mempool_audit_arg *pa = arg;
- void *obj;
-
- obj = (char *)start + pa->mp->header_size;
- pa->obj_end = (uintptr_t)end;
- pa->obj_num = idx + 1;
- __mempool_check_cookies(pa->mp, &obj, 1, 2);
-}
-
-static void
-mempool_audit_cookies(const struct rte_mempool *mp)
-{
- uint32_t elt_sz, num;
- struct mempool_audit_arg arg;
-
- elt_sz = mp->elt_size + mp->header_size + mp->trailer_size;
-
- arg.mp = mp;
- arg.obj_end = mp->elt_va_start;
- arg.obj_num = 0;
-
- num = rte_mempool_obj_iter((void *)mp->elt_va_start,
- mp->size, elt_sz, 1,
- mp->elt_pa, mp->pg_num, mp->pg_shift,
- mempool_obj_audit, &arg);
-
- if (num != mp->size) {
- rte_panic("rte_mempool_obj_iter(mempool=%p, size=%u) "
- "iterated only over %u elements\n",
- mp, mp->size, num);
- } else if (arg.obj_end != mp->elt_va_end || arg.obj_num != mp->size) {
- rte_panic("rte_mempool_obj_iter(mempool=%p, size=%u) "
- "last callback va_end: %#tx (%#tx expeceted), "
- "num of objects: %u (%u expected)\n",
- mp, mp->size,
- arg.obj_end, mp->elt_va_end,
- arg.obj_num, mp->size);
- }
-}
-
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic error "-Wcast-qual"
-#endif
-#else
-#define mempool_audit_cookies(mp) do {} while(0)
-#endif
-
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
-/* check cookies before and after objects */
-static void
-mempool_audit_cache(const struct rte_mempool *mp)
-{
- /* check cache size consistency */
- unsigned lcore_id;
- for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
- if (mp->local_cache[lcore_id].len > mp->cache_flushthresh) {
- RTE_LOG(CRIT, MEMPOOL, "badness on cache[%u]\n",
- lcore_id);
- rte_panic("MEMPOOL: invalid cache len\n");
- }
- }
-}
-#else
-#define mempool_audit_cache(mp) do {} while(0)
-#endif
-
-
-/* check the consistency of mempool (size, cookies, ...) */
-void
-rte_mempool_audit(const struct rte_mempool *mp)
-{
- mempool_audit_cache(mp);
- mempool_audit_cookies(mp);
-
- /* For case where mempool DEBUG is not set, and cache size is 0 */
- RTE_SET_USED(mp);
-}
-
-/* dump the status of the mempool on the console */
-void
-rte_mempool_dump(FILE *f, const struct rte_mempool *mp)
-{
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- struct rte_mempool_debug_stats sum;
- unsigned lcore_id;
-#endif
- unsigned common_count;
- unsigned cache_count;
-
- RTE_VERIFY(f != NULL);
- RTE_VERIFY(mp != NULL);
-
- fprintf(f, "mempool <%s>@%p\n", mp->name, mp);
- fprintf(f, " flags=%x\n", mp->flags);
- fprintf(f, " ring=<%s>@%p\n", mp->ring->name, mp->ring);
- fprintf(f, " phys_addr=0x%" PRIx64 "\n", mp->phys_addr);
- fprintf(f, " size=%"PRIu32"\n", mp->size);
- fprintf(f, " header_size=%"PRIu32"\n", mp->header_size);
- fprintf(f, " elt_size=%"PRIu32"\n", mp->elt_size);
- fprintf(f, " trailer_size=%"PRIu32"\n", mp->trailer_size);
- fprintf(f, " total_obj_size=%"PRIu32"\n",
- mp->header_size + mp->elt_size + mp->trailer_size);
-
- fprintf(f, " private_data_size=%"PRIu32"\n", mp->private_data_size);
- fprintf(f, " pg_num=%"PRIu32"\n", mp->pg_num);
- fprintf(f, " pg_shift=%"PRIu32"\n", mp->pg_shift);
- fprintf(f, " pg_mask=%#tx\n", mp->pg_mask);
- fprintf(f, " elt_va_start=%#tx\n", mp->elt_va_start);
- fprintf(f, " elt_va_end=%#tx\n", mp->elt_va_end);
- fprintf(f, " elt_pa[0]=0x%" PRIx64 "\n", mp->elt_pa[0]);
-
- if (mp->size != 0)
- fprintf(f, " avg bytes/object=%#Lf\n",
- (long double)(mp->elt_va_end - mp->elt_va_start) /
- mp->size);
-
- cache_count = rte_mempool_dump_cache(f, mp);
- common_count = rte_ring_count(mp->ring);
- if ((cache_count + common_count) > mp->size)
- common_count = mp->size - cache_count;
- fprintf(f, " common_pool_count=%u\n", common_count);
-
- /* sum and dump statistics */
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- memset(&sum, 0, sizeof(sum));
- for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
- sum.put_bulk += mp->stats[lcore_id].put_bulk;
- sum.put_objs += mp->stats[lcore_id].put_objs;
- sum.get_success_bulk += mp->stats[lcore_id].get_success_bulk;
- sum.get_success_objs += mp->stats[lcore_id].get_success_objs;
- sum.get_fail_bulk += mp->stats[lcore_id].get_fail_bulk;
- sum.get_fail_objs += mp->stats[lcore_id].get_fail_objs;
- }
- fprintf(f, " stats:\n");
- fprintf(f, " put_bulk=%"PRIu64"\n", sum.put_bulk);
- fprintf(f, " put_objs=%"PRIu64"\n", sum.put_objs);
- fprintf(f, " get_success_bulk=%"PRIu64"\n", sum.get_success_bulk);
- fprintf(f, " get_success_objs=%"PRIu64"\n", sum.get_success_objs);
- fprintf(f, " get_fail_bulk=%"PRIu64"\n", sum.get_fail_bulk);
- fprintf(f, " get_fail_objs=%"PRIu64"\n", sum.get_fail_objs);
-#else
- fprintf(f, " no statistics available\n");
-#endif
-
- rte_mempool_audit(mp);
-}
-
-/* dump the status of all mempools on the console */
-void
-rte_mempool_list_dump(FILE *f)
-{
- const struct rte_mempool *mp = NULL;
- struct rte_tailq_entry *te;
- struct rte_mempool_list *mempool_list;
-
- if ((mempool_list =
- RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return;
- }
-
- rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
-
- TAILQ_FOREACH(te, mempool_list, next) {
- mp = (struct rte_mempool *) te->data;
- rte_mempool_dump(f, mp);
- }
-
- rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
-}
-
-/* search a mempool from its name */
-struct rte_mempool *
-rte_mempool_lookup(const char *name)
-{
- struct rte_mempool *mp = NULL;
- struct rte_tailq_entry *te;
- struct rte_mempool_list *mempool_list;
-
- if ((mempool_list =
- RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
-
- rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
-
- TAILQ_FOREACH(te, mempool_list, next) {
- mp = (struct rte_mempool *) te->data;
- if (strncmp(name, mp->name, RTE_MEMPOOL_NAMESIZE) == 0)
- break;
- }
-
- rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
-
- if (te == NULL) {
- rte_errno = ENOENT;
- return NULL;
- }
-
- return mp;
-}
-
-void rte_mempool_walk(void (*func)(const struct rte_mempool *, void *),
- void *arg)
-{
- struct rte_tailq_entry *te = NULL;
- struct rte_mempool_list *mempool_list;
-
- if ((mempool_list =
- RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_MEMPOOL, rte_mempool_list)) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return;
- }
-
- rte_rwlock_read_lock(RTE_EAL_MEMPOOL_RWLOCK);
-
- TAILQ_FOREACH(te, mempool_list, next) {
- (*func)((struct rte_mempool *) te->data, arg);
- }
-
- rte_rwlock_read_unlock(RTE_EAL_MEMPOOL_RWLOCK);
-}
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
deleted file mode 100644
index 3314651..0000000
--- a/lib/librte_mempool/rte_mempool.h
+++ /dev/null
@@ -1,1392 +0,0 @@
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _RTE_MEMPOOL_H_
-#define _RTE_MEMPOOL_H_
-
-/**
- * @file
- * RTE Mempool.
- *
- * A memory pool is an allocator of fixed-size object. It is
- * identified by its name, and uses a ring to store free objects. It
- * provides some other optional services, like a per-core object
- * cache, and an alignment helper to ensure that objects are padded
- * to spread them equally on all RAM channels, ranks, and so on.
- *
- * Objects owned by a mempool should never be added in another
- * mempool. When an object is freed using rte_mempool_put() or
- * equivalent, the object data is not modified; the user can save some
- * meta-data in the object data and retrieve them when allocating a
- * new object.
- *
- * Note: the mempool implementation is not preemptable. A lcore must
- * not be interrupted by another task that uses the same mempool
- * (because it uses a ring which is not preemptable). Also, mempool
- * functions must not be used outside the DPDK environment: for
- * example, in linuxapp environment, a thread that is not created by
- * the EAL must not use mempools. This is due to the per-lcore cache
- * that won't work as rte_lcore_id() will not return a correct value.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <sys/queue.h>
-
-#include <rte_log.h>
-#include <rte_debug.h>
-#include <rte_lcore.h>
-#include <rte_memory.h>
-#include <rte_branch_prediction.h>
-#include <rte_ring.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define RTE_MEMPOOL_HEADER_COOKIE1 0xbadbadbadadd2e55ULL /**< Header cookie. */
-#define RTE_MEMPOOL_HEADER_COOKIE2 0xf2eef2eedadd2e55ULL /**< Header cookie. */
-#define RTE_MEMPOOL_TRAILER_COOKIE 0xadd2e55badbadbadULL /**< Trailer cookie.*/
-
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
-/**
- * A structure that stores the mempool statistics (per-lcore).
- */
-struct rte_mempool_debug_stats {
- uint64_t put_bulk; /**< Number of puts. */
- uint64_t put_objs; /**< Number of objects successfully put. */
- uint64_t get_success_bulk; /**< Successful allocation number. */
- uint64_t get_success_objs; /**< Objects successfully allocated. */
- uint64_t get_fail_bulk; /**< Failed allocation number. */
- uint64_t get_fail_objs; /**< Objects that failed to be allocated. */
-} __rte_cache_aligned;
-#endif
-
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
-/**
- * A structure that stores a per-core object cache.
- */
-struct rte_mempool_cache {
- unsigned len; /**< Cache len */
- /*
- * Cache is allocated to this size to allow it to overflow in certain
- * cases to avoid needless emptying of cache.
- */
- void *objs[RTE_MEMPOOL_CACHE_MAX_SIZE * 3]; /**< Cache objects */
-} __rte_cache_aligned;
-#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
-
-struct rte_mempool_objsz {
- uint32_t elt_size; /**< Size of an element. */
- uint32_t header_size; /**< Size of header (before elt). */
- uint32_t trailer_size; /**< Size of trailer (after elt). */
- uint32_t total_size;
- /**< Total size of an object (header + elt + trailer). */
-};
-
-#define RTE_MEMPOOL_NAMESIZE 32 /**< Maximum length of a memory pool. */
-#define RTE_MEMPOOL_MZ_PREFIX "MP_"
-
-/* "MP_<name>" */
-#define RTE_MEMPOOL_MZ_FORMAT RTE_MEMPOOL_MZ_PREFIX "%s"
-
-#ifdef RTE_LIBRTE_XEN_DOM0
-
-/* "<name>_MP_elt" */
-#define RTE_MEMPOOL_OBJ_NAME "%s_" RTE_MEMPOOL_MZ_PREFIX "elt"
-
-#else
-
-#define RTE_MEMPOOL_OBJ_NAME RTE_MEMPOOL_MZ_FORMAT
-
-#endif /* RTE_LIBRTE_XEN_DOM0 */
-
-#define MEMPOOL_PG_SHIFT_MAX (sizeof(uintptr_t) * CHAR_BIT - 1)
-
-/** Mempool over one chunk of physically continuous memory */
-#define MEMPOOL_PG_NUM_DEFAULT 1
-
-/**
- * The RTE mempool structure.
- */
-struct rte_mempool {
- char name[RTE_MEMPOOL_NAMESIZE]; /**< Name of mempool. */
- struct rte_ring *ring; /**< Ring to store objects. */
- phys_addr_t phys_addr; /**< Phys. addr. of mempool struct. */
- int flags; /**< Flags of the mempool. */
- uint32_t size; /**< Size of the mempool. */
- uint32_t cache_size; /**< Size of per-lcore local cache. */
- uint32_t cache_flushthresh;
- /**< Threshold before we flush excess elements. */
-
- uint32_t elt_size; /**< Size of an element. */
- uint32_t header_size; /**< Size of header (before elt). */
- uint32_t trailer_size; /**< Size of trailer (after elt). */
-
- unsigned private_data_size; /**< Size of private data. */
-
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- /** Per-lcore local cache. */
- struct rte_mempool_cache local_cache[RTE_MAX_LCORE];
-#endif
-
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- /** Per-lcore statistics. */
- struct rte_mempool_debug_stats stats[RTE_MAX_LCORE];
-#endif
-
- /* Address translation support, starts from next cache line. */
-
- /** Number of elements in the elt_pa array. */
- uint32_t pg_num __rte_cache_aligned;
- uint32_t pg_shift; /**< LOG2 of the physical pages. */
- uintptr_t pg_mask; /**< physical page mask value. */
- uintptr_t elt_va_start;
- /**< Virtual address of the first mempool object. */
- uintptr_t elt_va_end;
- /**< Virtual address of the <size + 1> mempool object. */
- phys_addr_t elt_pa[MEMPOOL_PG_NUM_DEFAULT];
- /**< Array of physical pages addresses for the mempool objects buffer. */
-
-} __rte_cache_aligned;
-
-#define MEMPOOL_F_NO_SPREAD 0x0001 /**< Do not spread in memory. */
-#define MEMPOOL_F_NO_CACHE_ALIGN 0x0002 /**< Do not align objs on cache lines.*/
-#define MEMPOOL_F_SP_PUT 0x0004 /**< Default put is "single-producer".*/
-#define MEMPOOL_F_SC_GET 0x0008 /**< Default get is "single-consumer".*/
-
-/**
- * @internal When debug is enabled, store some statistics.
- * @param mp
- * Pointer to the memory pool.
- * @param name
- * Name of the statistics field to increment in the memory pool.
- * @param n
- * Number to add to the object-oriented statistics.
- */
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
-#define __MEMPOOL_STAT_ADD(mp, name, n) do { \
- unsigned __lcore_id = rte_lcore_id(); \
- mp->stats[__lcore_id].name##_objs += n; \
- mp->stats[__lcore_id].name##_bulk += 1; \
- } while(0)
-#else
-#define __MEMPOOL_STAT_ADD(mp, name, n) do {} while(0)
-#endif
-
-/**
- * Calculates size of the mempool header.
- * @param mp
- * Pointer to the memory pool.
- * @param pgn
- * Number of page used to store mempool objects.
- */
-#define MEMPOOL_HEADER_SIZE(mp, pgn) (sizeof(*(mp)) + \
- RTE_ALIGN_CEIL(((pgn) - RTE_DIM((mp)->elt_pa)) * \
- sizeof ((mp)->elt_pa[0]), RTE_CACHE_LINE_SIZE))
-
-/**
- * Returns TRUE if whole mempool is allocated in one contiguous block of memory.
- */
-#define MEMPOOL_IS_CONTIG(mp) \
- ((mp)->pg_num == MEMPOOL_PG_NUM_DEFAULT && \
- (mp)->phys_addr == (mp)->elt_pa[0])
-
-/**
- * @internal Get a pointer to a mempool pointer in the object header.
- * @param obj
- * Pointer to object.
- * @return
- * The pointer to the mempool from which the object was allocated.
- */
-static inline struct rte_mempool **__mempool_from_obj(void *obj)
-{
- struct rte_mempool **mpp;
- unsigned off;
-
- off = sizeof(struct rte_mempool *);
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- off += sizeof(uint64_t);
-#endif
- mpp = (struct rte_mempool **)((char *)obj - off);
- return mpp;
-}
-
-/**
- * Return a pointer to the mempool owning this object.
- *
- * @param obj
- * An object that is owned by a pool. If this is not the case,
- * the behavior is undefined.
- * @return
- * A pointer to the mempool structure.
- */
-static inline const struct rte_mempool *rte_mempool_from_obj(void *obj)
-{
- struct rte_mempool * const *mpp;
- mpp = __mempool_from_obj(obj);
- return *mpp;
-}
-
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
-/* get header cookie value */
-static inline uint64_t __mempool_read_header_cookie(const void *obj)
-{
- return *(const uint64_t *)((const char *)obj - sizeof(uint64_t));
-}
-
-/* get trailer cookie value */
-static inline uint64_t __mempool_read_trailer_cookie(void *obj)
-{
- struct rte_mempool **mpp = __mempool_from_obj(obj);
- return *(uint64_t *)((char *)obj + (*mpp)->elt_size);
-}
-
-/* write header cookie value */
-static inline void __mempool_write_header_cookie(void *obj, int free)
-{
- uint64_t *cookie_p;
- cookie_p = (uint64_t *)((char *)obj - sizeof(uint64_t));
- if (free == 0)
- *cookie_p = RTE_MEMPOOL_HEADER_COOKIE1;
- else
- *cookie_p = RTE_MEMPOOL_HEADER_COOKIE2;
-
-}
-
-/* write trailer cookie value */
-static inline void __mempool_write_trailer_cookie(void *obj)
-{
- uint64_t *cookie_p;
- struct rte_mempool **mpp = __mempool_from_obj(obj);
- cookie_p = (uint64_t *)((char *)obj + (*mpp)->elt_size);
- *cookie_p = RTE_MEMPOOL_TRAILER_COOKIE;
-}
-#endif /* RTE_LIBRTE_MEMPOOL_DEBUG */
-
-/**
- * @internal Check and update cookies or panic.
- *
- * @param mp
- * Pointer to the memory pool.
- * @param obj_table_const
- * Pointer to a table of void * pointers (objects).
- * @param n
- * Index of object in object table.
- * @param free
- * - 0: object is supposed to be allocated, mark it as free
- * - 1: object is supposed to be free, mark it as allocated
- * - 2: just check that cookie is valid (free or allocated)
- */
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic ignored "-Wcast-qual"
-#endif
-static inline void __mempool_check_cookies(const struct rte_mempool *mp,
- void * const *obj_table_const,
- unsigned n, int free)
-{
- uint64_t cookie;
- void *tmp;
- void *obj;
- void **obj_table;
-
- /* Force to drop the "const" attribute. This is done only when
- * DEBUG is enabled */
- tmp = (void *) obj_table_const;
- obj_table = (void **) tmp;
-
- while (n--) {
- obj = obj_table[n];
-
- if (rte_mempool_from_obj(obj) != mp)
- rte_panic("MEMPOOL: object is owned by another "
- "mempool\n");
-
- cookie = __mempool_read_header_cookie(obj);
-
- if (free == 0) {
- if (cookie != RTE_MEMPOOL_HEADER_COOKIE1) {
- rte_log_set_history(0);
- RTE_LOG(CRIT, MEMPOOL,
- "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
- obj, mp, cookie);
- rte_panic("MEMPOOL: bad header cookie (put)\n");
- }
- __mempool_write_header_cookie(obj, 1);
- }
- else if (free == 1) {
- if (cookie != RTE_MEMPOOL_HEADER_COOKIE2) {
- rte_log_set_history(0);
- RTE_LOG(CRIT, MEMPOOL,
- "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
- obj, mp, cookie);
- rte_panic("MEMPOOL: bad header cookie (get)\n");
- }
- __mempool_write_header_cookie(obj, 0);
- }
- else if (free == 2) {
- if (cookie != RTE_MEMPOOL_HEADER_COOKIE1 &&
- cookie != RTE_MEMPOOL_HEADER_COOKIE2) {
- rte_log_set_history(0);
- RTE_LOG(CRIT, MEMPOOL,
- "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
- obj, mp, cookie);
- rte_panic("MEMPOOL: bad header cookie (audit)\n");
- }
- }
- cookie = __mempool_read_trailer_cookie(obj);
- if (cookie != RTE_MEMPOOL_TRAILER_COOKIE) {
- rte_log_set_history(0);
- RTE_LOG(CRIT, MEMPOOL,
- "obj=%p, mempool=%p, cookie=%"PRIx64"\n",
- obj, mp, cookie);
- rte_panic("MEMPOOL: bad trailer cookie\n");
- }
- }
-}
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic error "-Wcast-qual"
-#endif
-#else
-#define __mempool_check_cookies(mp, obj_table_const, n, free) do {} while(0)
-#endif /* RTE_LIBRTE_MEMPOOL_DEBUG */
-
-/**
- * An mempool's object iterator callback function.
- */
-typedef void (*rte_mempool_obj_iter_t)(void * /*obj_iter_arg*/,
- void * /*obj_start*/,
- void * /*obj_end*/,
- uint32_t /*obj_index */);
-
-/*
- * Iterates across objects of the given size and alignment in the
- * provided chunk of memory. The given memory buffer can consist of
- * disjoint physical pages.
- * For each object calls the provided callback (if any).
- * Used to populate mempool, walk through all elements of the mempool,
- * estimate how many elements of the given size could be created in the given
- * memory buffer.
- * @param vaddr
- * Virtual address of the memory buffer.
- * @param elt_num
- * Maximum number of objects to iterate through.
- * @param elt_sz
- * Size of each object.
- * @param paddr
- * Array of phyiscall addresses of the pages that comprises given memory
- * buffer.
- * @param pg_num
- * Number of elements in the paddr array.
- * @param pg_shift
- * LOG2 of the physical pages size.
- * @param obj_iter
- * Object iterator callback function (could be NULL).
- * @param obj_iter_arg
- * User defined Prameter for the object iterator callback function.
- *
- * @return
- * Number of objects iterated through.
- */
-
-uint32_t rte_mempool_obj_iter(void *vaddr,
- uint32_t elt_num, size_t elt_sz, size_t align,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift,
- rte_mempool_obj_iter_t obj_iter, void *obj_iter_arg);
-
-/**
- * An object constructor callback function for mempool.
- *
- * Arguments are the mempool, the opaque pointer given by the user in
- * rte_mempool_create(), the pointer to the element and the index of
- * the element in the pool.
- */
-typedef void (rte_mempool_obj_ctor_t)(struct rte_mempool *, void *,
- void *, unsigned);
-
-/**
- * A mempool constructor callback function.
- *
- * Arguments are the mempool and the opaque pointer given by the user in
- * rte_mempool_create().
- */
-typedef void (rte_mempool_ctor_t)(struct rte_mempool *, void *);
-
-/**
- * Creates a new mempool named *name* in memory.
- *
- * This function uses ``memzone_reserve()`` to allocate memory. The
- * pool contains n elements of elt_size. Its size is set to n.
- * All elements of the mempool are allocated together with the mempool header,
- * in one physically continuous chunk of memory.
- *
- * @param name
- * The name of the mempool.
- * @param n
- * The number of elements in the mempool. The optimum size (in terms of
- * memory usage) for a mempool is when n is a power of two minus one:
- * n = (2^q - 1).
- * @param elt_size
- * The size of each element.
- * @param cache_size
- * If cache_size is non-zero, the rte_mempool library will try to
- * limit the accesses to the common lockless pool, by maintaining a
- * per-lcore object cache. This argument must be lower or equal to
- * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
- * cache_size to have "n modulo cache_size == 0": if this is
- * not the case, some elements will always stay in the pool and will
- * never be used. The access to the per-lcore table is of course
- * faster than the multi-producer/consumer pool. The cache can be
- * disabled if the cache_size argument is set to 0; it can be useful to
- * avoid losing objects in cache. Note that even if not used, the
- * memory space for cache is always reserved in a mempool structure,
- * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
- * @param private_data_size
- * The size of the private data appended after the mempool
- * structure. This is useful for storing some private data after the
- * mempool structure, as is done for rte_mbuf_pool for example.
- * @param mp_init
- * A function pointer that is called for initialization of the pool,
- * before object initialization. The user can initialize the private
- * data in this function if needed. This parameter can be NULL if
- * not needed.
- * @param mp_init_arg
- * An opaque pointer to data that can be used in the mempool
- * constructor function.
- * @param obj_init
- * A function pointer that is called for each object at
- * initialization of the pool. The user can set some meta data in
- * objects if needed. This parameter can be NULL if not needed.
- * The obj_init() function takes the mempool pointer, the init_arg,
- * the object pointer and the object number as parameters.
- * @param obj_init_arg
- * An opaque pointer to data that can be used as an argument for
- * each call to the object constructor function.
- * @param socket_id
- * The *socket_id* argument is the socket identifier in the case of
- * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
- * constraint for the reserved zone.
- * @param flags
- * The *flags* arguments is an OR of following flags:
- * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
- * between channels in RAM: the pool allocator will add padding
- * between objects depending on the hardware configuration. See
- * Memory alignment constraints for details. If this flag is set,
- * the allocator will just align them to a cache line.
- * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
- * cache-aligned. This flag removes this constraint, and no
- * padding will be present between objects. This flag implies
- * MEMPOOL_F_NO_SPREAD.
- * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
- * when using rte_mempool_put() or rte_mempool_put_bulk() is
- * "single-producer". Otherwise, it is "multi-producers".
- * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
- * when using rte_mempool_get() or rte_mempool_get_bulk() is
- * "single-consumer". Otherwise, it is "multi-consumers".
- * @return
- * The pointer to the new allocated mempool, on success. NULL on error
- * with rte_errno set appropriately. Possible rte_errno values include:
- * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
- * - E_RTE_SECONDARY - function was called from a secondary process instance
- * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
- * - EINVAL - cache size provided is too large
- * - ENOSPC - the maximum number of memzones has already been allocated
- * - EEXIST - a memzone with the same name already exists
- * - ENOMEM - no appropriate memory area found in which to create memzone
- */
-struct rte_mempool *
-rte_mempool_create(const char *name, unsigned n, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags);
-
-/**
- * Creates a new mempool named *name* in memory.
- *
- * This function uses ``memzone_reserve()`` to allocate memory. The
- * pool contains n elements of elt_size. Its size is set to n.
- * Depending on the input parameters, mempool elements can be either allocated
- * together with the mempool header, or an externally provided memory buffer
- * could be used to store mempool objects. In later case, that external
- * memory buffer can consist of set of disjoint phyiscal pages.
- *
- * @param name
- * The name of the mempool.
- * @param n
- * The number of elements in the mempool. The optimum size (in terms of
- * memory usage) for a mempool is when n is a power of two minus one:
- * n = (2^q - 1).
- * @param elt_size
- * The size of each element.
- * @param cache_size
- * If cache_size is non-zero, the rte_mempool library will try to
- * limit the accesses to the common lockless pool, by maintaining a
- * per-lcore object cache. This argument must be lower or equal to
- * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
- * cache_size to have "n modulo cache_size == 0": if this is
- * not the case, some elements will always stay in the pool and will
- * never be used. The access to the per-lcore table is of course
- * faster than the multi-producer/consumer pool. The cache can be
- * disabled if the cache_size argument is set to 0; it can be useful to
- * avoid losing objects in cache. Note that even if not used, the
- * memory space for cache is always reserved in a mempool structure,
- * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
- * @param private_data_size
- * The size of the private data appended after the mempool
- * structure. This is useful for storing some private data after the
- * mempool structure, as is done for rte_mbuf_pool for example.
- * @param mp_init
- * A function pointer that is called for initialization of the pool,
- * before object initialization. The user can initialize the private
- * data in this function if needed. This parameter can be NULL if
- * not needed.
- * @param mp_init_arg
- * An opaque pointer to data that can be used in the mempool
- * constructor function.
- * @param obj_init
- * A function pointer that is called for each object at
- * initialization of the pool. The user can set some meta data in
- * objects if needed. This parameter can be NULL if not needed.
- * The obj_init() function takes the mempool pointer, the init_arg,
- * the object pointer and the object number as parameters.
- * @param obj_init_arg
- * An opaque pointer to data that can be used as an argument for
- * each call to the object constructor function.
- * @param socket_id
- * The *socket_id* argument is the socket identifier in the case of
- * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
- * constraint for the reserved zone.
- * @param flags
- * The *flags* arguments is an OR of following flags:
- * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
- * between channels in RAM: the pool allocator will add padding
- * between objects depending on the hardware configuration. See
- * Memory alignment constraints for details. If this flag is set,
- * the allocator will just align them to a cache line.
- * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
- * cache-aligned. This flag removes this constraint, and no
- * padding will be present between objects. This flag implies
- * MEMPOOL_F_NO_SPREAD.
- * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
- * when using rte_mempool_put() or rte_mempool_put_bulk() is
- * "single-producer". Otherwise, it is "multi-producers".
- * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
- * when using rte_mempool_get() or rte_mempool_get_bulk() is
- * "single-consumer". Otherwise, it is "multi-consumers".
- * @param vaddr
- * Virtual address of the externally allocated memory buffer.
- * Will be used to store mempool objects.
- * @param paddr
- * Array of phyiscall addresses of the pages that comprises given memory
- * buffer.
- * @param pg_num
- * Number of elements in the paddr array.
- * @param pg_shift
- * LOG2 of the physical pages size.
- * @return
- * The pointer to the new allocated mempool, on success. NULL on error
- * with rte_errno set appropriately. Possible rte_errno values include:
- * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
- * - E_RTE_SECONDARY - function was called from a secondary process instance
- * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
- * - EINVAL - cache size provided is too large
- * - ENOSPC - the maximum number of memzones has already been allocated
- * - EEXIST - a memzone with the same name already exists
- * - ENOMEM - no appropriate memory area found in which to create memzone
- */
-struct rte_mempool *
-rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags, void *vaddr,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift);
-
-#ifdef RTE_LIBRTE_XEN_DOM0
-/**
- * Creates a new mempool named *name* in memory on Xen Dom0.
- *
- * This function uses ``rte_mempool_xmem_create()`` to allocate memory. The
- * pool contains n elements of elt_size. Its size is set to n.
- * All elements of the mempool are allocated together with the mempool header,
- * and memory buffer can consist of set of disjoint phyiscal pages.
- *
- * @param name
- * The name of the mempool.
- * @param n
- * The number of elements in the mempool. The optimum size (in terms of
- * memory usage) for a mempool is when n is a power of two minus one:
- * n = (2^q - 1).
- * @param elt_size
- * The size of each element.
- * @param cache_size
- * If cache_size is non-zero, the rte_mempool library will try to
- * limit the accesses to the common lockless pool, by maintaining a
- * per-lcore object cache. This argument must be lower or equal to
- * CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE. It is advised to choose
- * cache_size to have "n modulo cache_size == 0": if this is
- * not the case, some elements will always stay in the pool and will
- * never be used. The access to the per-lcore table is of course
- * faster than the multi-producer/consumer pool. The cache can be
- * disabled if the cache_size argument is set to 0; it can be useful to
- * avoid losing objects in cache. Note that even if not used, the
- * memory space for cache is always reserved in a mempool structure,
- * except if CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE is set to 0.
- * @param private_data_size
- * The size of the private data appended after the mempool
- * structure. This is useful for storing some private data after the
- * mempool structure, as is done for rte_mbuf_pool for example.
- * @param mp_init
- * A function pointer that is called for initialization of the pool,
- * before object initialization. The user can initialize the private
- * data in this function if needed. This parameter can be NULL if
- * not needed.
- * @param mp_init_arg
- * An opaque pointer to data that can be used in the mempool
- * constructor function.
- * @param obj_init
- * A function pointer that is called for each object at
- * initialization of the pool. The user can set some meta data in
- * objects if needed. This parameter can be NULL if not needed.
- * The obj_init() function takes the mempool pointer, the init_arg,
- * the object pointer and the object number as parameters.
- * @param obj_init_arg
- * An opaque pointer to data that can be used as an argument for
- * each call to the object constructor function.
- * @param socket_id
- * The *socket_id* argument is the socket identifier in the case of
- * NUMA. The value can be *SOCKET_ID_ANY* if there is no NUMA
- * constraint for the reserved zone.
- * @param flags
- * The *flags* arguments is an OR of following flags:
- * - MEMPOOL_F_NO_SPREAD: By default, objects addresses are spread
- * between channels in RAM: the pool allocator will add padding
- * between objects depending on the hardware configuration. See
- * Memory alignment constraints for details. If this flag is set,
- * the allocator will just align them to a cache line.
- * - MEMPOOL_F_NO_CACHE_ALIGN: By default, the returned objects are
- * cache-aligned. This flag removes this constraint, and no
- * padding will be present between objects. This flag implies
- * MEMPOOL_F_NO_SPREAD.
- * - MEMPOOL_F_SP_PUT: If this flag is set, the default behavior
- * when using rte_mempool_put() or rte_mempool_put_bulk() is
- * "single-producer". Otherwise, it is "multi-producers".
- * - MEMPOOL_F_SC_GET: If this flag is set, the default behavior
- * when using rte_mempool_get() or rte_mempool_get_bulk() is
- * "single-consumer". Otherwise, it is "multi-consumers".
- * @return
- * The pointer to the new allocated mempool, on success. NULL on error
- * with rte_errno set appropriately. Possible rte_errno values include:
- * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
- * - E_RTE_SECONDARY - function was called from a secondary process instance
- * - E_RTE_NO_TAILQ - no tailq list could be got for the ring or mempool list
- * - EINVAL - cache size provided is too large
- * - ENOSPC - the maximum number of memzones has already been allocated
- * - EEXIST - a memzone with the same name already exists
- * - ENOMEM - no appropriate memory area found in which to create memzone
- */
-struct rte_mempool *
-rte_dom0_mempool_create(const char *name, unsigned n, unsigned elt_size,
- unsigned cache_size, unsigned private_data_size,
- rte_mempool_ctor_t *mp_init, void *mp_init_arg,
- rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg,
- int socket_id, unsigned flags);
-#endif
-
-/**
- * Dump the status of the mempool to the console.
- *
- * @param f
- * A pointer to a file for output
- * @param mp
- * A pointer to the mempool structure.
- */
-void rte_mempool_dump(FILE *f, const struct rte_mempool *mp);
-
-/**
- * @internal Put several objects back in the mempool; used internally.
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to store back in the mempool, must be strictly
- * positive.
- * @param is_mp
- * Mono-producer (0) or multi-producers (1).
- */
-static inline void __attribute__((always_inline))
-__mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table,
- unsigned n, int is_mp)
-{
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- struct rte_mempool_cache *cache;
- uint32_t index;
- void **cache_objs;
- unsigned lcore_id = rte_lcore_id();
- uint32_t cache_size = mp->cache_size;
- uint32_t flushthresh = mp->cache_flushthresh;
-#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
-
- /* increment stat now, adding in mempool always success */
- __MEMPOOL_STAT_ADD(mp, put, n);
-
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- /* cache is not enabled or single producer */
- if (unlikely(cache_size == 0 || is_mp == 0))
- goto ring_enqueue;
-
- /* Go straight to ring if put would overflow mem allocated for cache */
- if (unlikely(n > RTE_MEMPOOL_CACHE_MAX_SIZE))
- goto ring_enqueue;
-
- cache = &mp->local_cache[lcore_id];
- cache_objs = &cache->objs[cache->len];
-
- /*
- * The cache follows the following algorithm
- * 1. Add the objects to the cache
- * 2. Anything greater than the cache min value (if it crosses the
- * cache flush threshold) is flushed to the ring.
- */
-
- /* Add elements back into the cache */
- for (index = 0; index < n; ++index, obj_table++)
- cache_objs[index] = *obj_table;
-
- cache->len += n;
-
- if (cache->len >= flushthresh) {
- rte_ring_mp_enqueue_bulk(mp->ring, &cache->objs[cache_size],
- cache->len - cache_size);
- cache->len = cache_size;
- }
-
- return;
-
-ring_enqueue:
-#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
-
- /* push remaining objects in ring */
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
- if (is_mp) {
- if (rte_ring_mp_enqueue_bulk(mp->ring, obj_table, n) < 0)
- rte_panic("cannot put objects in mempool\n");
- }
- else {
- if (rte_ring_sp_enqueue_bulk(mp->ring, obj_table, n) < 0)
- rte_panic("cannot put objects in mempool\n");
- }
-#else
- if (is_mp)
- rte_ring_mp_enqueue_bulk(mp->ring, obj_table, n);
- else
- rte_ring_sp_enqueue_bulk(mp->ring, obj_table, n);
-#endif
-}
-
-
-/**
- * Put several objects back in the mempool (multi-producers safe).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to add in the mempool from the obj_table.
- */
-static inline void __attribute__((always_inline))
-rte_mempool_mp_put_bulk(struct rte_mempool *mp, void * const *obj_table,
- unsigned n)
-{
- __mempool_check_cookies(mp, obj_table, n, 0);
- __mempool_put_bulk(mp, obj_table, n, 1);
-}
-
-/**
- * Put several objects back in the mempool (NOT multi-producers safe).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to add in the mempool from obj_table.
- */
-static inline void
-rte_mempool_sp_put_bulk(struct rte_mempool *mp, void * const *obj_table,
- unsigned n)
-{
- __mempool_check_cookies(mp, obj_table, n, 0);
- __mempool_put_bulk(mp, obj_table, n, 0);
-}
-
-/**
- * Put several objects back in the mempool.
- *
- * This function calls the multi-producer or the single-producer
- * version depending on the default behavior that was specified at
- * mempool creation time (see flags).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to add in the mempool from obj_table.
- */
-static inline void __attribute__((always_inline))
-rte_mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table,
- unsigned n)
-{
- __mempool_check_cookies(mp, obj_table, n, 0);
- __mempool_put_bulk(mp, obj_table, n, !(mp->flags & MEMPOOL_F_SP_PUT));
-}
-
-/**
- * Put one object in the mempool (multi-producers safe).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj
- * A pointer to the object to be added.
- */
-static inline void __attribute__((always_inline))
-rte_mempool_mp_put(struct rte_mempool *mp, void *obj)
-{
- rte_mempool_mp_put_bulk(mp, &obj, 1);
-}
-
-/**
- * Put one object back in the mempool (NOT multi-producers safe).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj
- * A pointer to the object to be added.
- */
-static inline void __attribute__((always_inline))
-rte_mempool_sp_put(struct rte_mempool *mp, void *obj)
-{
- rte_mempool_sp_put_bulk(mp, &obj, 1);
-}
-
-/**
- * Put one object back in the mempool.
- *
- * This function calls the multi-producer or the single-producer
- * version depending on the default behavior that was specified at
- * mempool creation time (see flags).
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj
- * A pointer to the object to be added.
- */
-static inline void __attribute__((always_inline))
-rte_mempool_put(struct rte_mempool *mp, void *obj)
-{
- rte_mempool_put_bulk(mp, &obj, 1);
-}
-
-/**
- * @internal Get several objects from the mempool; used internally.
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to get, must be strictly positive.
- * @param is_mc
- * Mono-consumer (0) or multi-consumers (1).
- * @return
- * - >=0: Success; number of objects supplied.
- * - <0: Error; code of ring dequeue function.
- */
-static inline int __attribute__((always_inline))
-__mempool_get_bulk(struct rte_mempool *mp, void **obj_table,
- unsigned n, int is_mc)
-{
- int ret;
-#if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
- struct rte_mempool_cache *cache;
- uint32_t index, len;
- void **cache_objs;
- unsigned lcore_id = rte_lcore_id();
- uint32_t cache_size = mp->cache_size;
-
- /* cache is not enabled or single consumer */
- if (unlikely(cache_size == 0 || is_mc == 0 || n >= cache_size))
- goto ring_dequeue;
-
- cache = &mp->local_cache[lcore_id];
- cache_objs = cache->objs;
-
- /* Can this be satisfied from the cache? */
- if (cache->len < n) {
- /* No. Backfill the cache first, and then fill from it */
- uint32_t req = n + (cache_size - cache->len);
-
- /* How many do we require i.e. number to fill the cache + the request */
- ret = rte_ring_mc_dequeue_bulk(mp->ring, &cache->objs[cache->len], req);
- if (unlikely(ret < 0)) {
- /*
- * In the offchance that we are buffer constrained,
- * where we are not able to allocate cache + n, go to
- * the ring directly. If that fails, we are truly out of
- * buffers.
- */
- goto ring_dequeue;
- }
-
- cache->len += req;
- }
-
- /* Now fill in the response ... */
- for (index = 0, len = cache->len - 1; index < n; ++index, len--, obj_table++)
- *obj_table = cache_objs[len];
-
- cache->len -= n;
-
- __MEMPOOL_STAT_ADD(mp, get_success, n);
-
- return 0;
-
-ring_dequeue:
-#endif /* RTE_MEMPOOL_CACHE_MAX_SIZE > 0 */
-
- /* get remaining objects from ring */
- if (is_mc)
- ret = rte_ring_mc_dequeue_bulk(mp->ring, obj_table, n);
- else
- ret = rte_ring_sc_dequeue_bulk(mp->ring, obj_table, n);
-
- if (ret < 0)
- __MEMPOOL_STAT_ADD(mp, get_fail, n);
- else
- __MEMPOOL_STAT_ADD(mp, get_success, n);
-
- return ret;
-}
-
-/**
- * Get several objects from the mempool (multi-consumers safe).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects) that will be filled.
- * @param n
- * The number of objects to get from mempool to obj_table.
- * @return
- * - 0: Success; objects taken.
- * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_mc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
-{
- int ret;
- ret = __mempool_get_bulk(mp, obj_table, n, 1);
- if (ret == 0)
- __mempool_check_cookies(mp, obj_table, n, 1);
- return ret;
-}
-
-/**
- * Get several objects from the mempool (NOT multi-consumers safe).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects) that will be filled.
- * @param n
- * The number of objects to get from the mempool to obj_table.
- * @return
- * - 0: Success; objects taken.
- * - -ENOENT: Not enough entries in the mempool; no object is
- * retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_sc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
-{
- int ret;
- ret = __mempool_get_bulk(mp, obj_table, n, 0);
- if (ret == 0)
- __mempool_check_cookies(mp, obj_table, n, 1);
- return ret;
-}
-
-/**
- * Get several objects from the mempool.
- *
- * This function calls the multi-consumers or the single-consumer
- * version, depending on the default behaviour that was specified at
- * mempool creation time (see flags).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects) that will be filled.
- * @param n
- * The number of objects to get from the mempool to obj_table.
- * @return
- * - 0: Success; objects taken
- * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n)
-{
- int ret;
- ret = __mempool_get_bulk(mp, obj_table, n,
- !(mp->flags & MEMPOOL_F_SC_GET));
- if (ret == 0)
- __mempool_check_cookies(mp, obj_table, n, 1);
- return ret;
-}
-
-/**
- * Get one object from the mempool (multi-consumers safe).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_p
- * A pointer to a void * pointer (object) that will be filled.
- * @return
- * - 0: Success; objects taken.
- * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_mc_get(struct rte_mempool *mp, void **obj_p)
-{
- return rte_mempool_mc_get_bulk(mp, obj_p, 1);
-}
-
-/**
- * Get one object from the mempool (NOT multi-consumers safe).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_p
- * A pointer to a void * pointer (object) that will be filled.
- * @return
- * - 0: Success; objects taken.
- * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_sc_get(struct rte_mempool *mp, void **obj_p)
-{
- return rte_mempool_sc_get_bulk(mp, obj_p, 1);
-}
-
-/**
- * Get one object from the mempool.
- *
- * This function calls the multi-consumers or the single-consumer
- * version, depending on the default behavior that was specified at
- * mempool creation (see flags).
- *
- * If cache is enabled, objects will be retrieved first from cache,
- * subsequently from the common pool. Note that it can return -ENOENT when
- * the local cache and common pool are empty, even if cache from other
- * lcores are full.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param obj_p
- * A pointer to a void * pointer (object) that will be filled.
- * @return
- * - 0: Success; objects taken.
- * - -ENOENT: Not enough entries in the mempool; no object is retrieved.
- */
-static inline int __attribute__((always_inline))
-rte_mempool_get(struct rte_mempool *mp, void **obj_p)
-{
- return rte_mempool_get_bulk(mp, obj_p, 1);
-}
-
-/**
- * Return the number of entries in the mempool.
- *
- * When cache is enabled, this function has to browse the length of
- * all lcores, so it should not be used in a data path, but only for
- * debug purposes.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @return
- * The number of entries in the mempool.
- */
-unsigned rte_mempool_count(const struct rte_mempool *mp);
-
-/**
- * Return the number of free entries in the mempool ring.
- * i.e. how many entries can be freed back to the mempool.
- *
- * NOTE: This corresponds to the number of elements *allocated* from the
- * memory pool, not the number of elements in the pool itself. To count
- * the number elements currently available in the pool, use "rte_mempool_count"
- *
- * When cache is enabled, this function has to browse the length of
- * all lcores, so it should not be used in a data path, but only for
- * debug purposes.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @return
- * The number of free entries in the mempool.
- */
-static inline unsigned
-rte_mempool_free_count(const struct rte_mempool *mp)
-{
- return mp->size - rte_mempool_count(mp);
-}
-
-/**
- * Test if the mempool is full.
- *
- * When cache is enabled, this function has to browse the length of all
- * lcores, so it should not be used in a data path, but only for debug
- * purposes.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @return
- * - 1: The mempool is full.
- * - 0: The mempool is not full.
- */
-static inline int
-rte_mempool_full(const struct rte_mempool *mp)
-{
- return !!(rte_mempool_count(mp) == mp->size);
-}
-
-/**
- * Test if the mempool is empty.
- *
- * When cache is enabled, this function has to browse the length of all
- * lcores, so it should not be used in a data path, but only for debug
- * purposes.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @return
- * - 1: The mempool is empty.
- * - 0: The mempool is not empty.
- */
-static inline int
-rte_mempool_empty(const struct rte_mempool *mp)
-{
- return !!(rte_mempool_count(mp) == 0);
-}
-
-/**
- * Return the physical address of elt, which is an element of the pool mp.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @param elt
- * A pointer (virtual address) to the element of the pool.
- * @return
- * The physical address of the elt element.
- */
-static inline phys_addr_t
-rte_mempool_virt2phy(const struct rte_mempool *mp, const void *elt)
-{
- if (rte_eal_has_hugepages()) {
- uintptr_t off;
-
- off = (const char *)elt - (const char *)mp->elt_va_start;
- return (mp->elt_pa[off >> mp->pg_shift] + (off & mp->pg_mask));
- } else {
- /*
- * If huge pages are disabled, we cannot assume the
- * memory region to be physically contiguous.
- * Lookup for each element.
- */
- return rte_mem_virt2phy(elt);
- }
-}
-
-/**
- * Check the consistency of mempool objects.
- *
- * Verify the coherency of fields in the mempool structure. Also check
- * that the cookies of mempool objects (even the ones that are not
- * present in pool) have a correct value. If not, a panic will occur.
- *
- * @param mp
- * A pointer to the mempool structure.
- */
-void rte_mempool_audit(const struct rte_mempool *mp);
-
-/**
- * Return a pointer to the private data in an mempool structure.
- *
- * @param mp
- * A pointer to the mempool structure.
- * @return
- * A pointer to the private data.
- */
-static inline void *rte_mempool_get_priv(struct rte_mempool *mp)
-{
- return (char *)mp + MEMPOOL_HEADER_SIZE(mp, mp->pg_num);
-}
-
-/**
- * Dump the status of all mempools on the console
- *
- * @param f
- * A pointer to a file for output
- */
-void rte_mempool_list_dump(FILE *f);
-
-/**
- * Search a mempool from its name
- *
- * @param name
- * The name of the mempool.
- * @return
- * The pointer to the mempool matching the name, or NULL if not found.
- * NULL on error
- * with rte_errno set appropriately. Possible rte_errno values include:
- * - ENOENT - required entry not available to return.
- *
- */
-struct rte_mempool *rte_mempool_lookup(const char *name);
-
-/**
- * Given a desired size of the mempool element and mempool flags,
- * caluclates header, trailer, body and total sizes of the mempool object.
- * @param elt_size
- * The size of each element.
- * @param flags
- * The flags used for the mempool creation.
- * Consult rte_mempool_create() for more information about possible values.
- * The size of each element.
- * @return
- * Total size of the mempool object.
- */
-uint32_t rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,
- struct rte_mempool_objsz *sz);
-
-/**
- * Calculate maximum amount of memory required to store given number of objects.
- * Assumes that the memory buffer will be aligned at page boundary.
- * Note, that if object size is bigger then page size, then it assumes that
- * we have a subsets of physically continuous pages big enough to store
- * at least one object.
- * @param elt_num
- * Number of elements.
- * @param elt_sz
- * The size of each element.
- * @param pg_shift
- * LOG2 of the physical pages size.
- * @return
- * Required memory size aligned at page boundary.
- */
-size_t rte_mempool_xmem_size(uint32_t elt_num, size_t elt_sz,
- uint32_t pg_shift);
-
-/**
- * Calculate how much memory would be actually required with the given
- * memory footprint to store required number of objects.
- * @param vaddr
- * Virtual address of the externally allocated memory buffer.
- * Will be used to store mempool objects.
- * @param elt_num
- * Number of elements.
- * @param elt_sz
- * The size of each element.
- * @param paddr
- * Array of phyiscall addresses of the pages that comprises given memory
- * buffer.
- * @param pg_num
- * Number of elements in the paddr array.
- * @param pg_shift
- * LOG2 of the physical pages size.
- * @return
- * Number of bytes needed to store given number of objects,
- * aligned to the given page size.
- * If provided memory buffer is not big enough:
- * (-1) * actual number of elemnts that can be stored in that buffer.
- */
-ssize_t rte_mempool_xmem_usage(void *vaddr, uint32_t elt_num, size_t elt_sz,
- const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift);
-
-/**
- * Walk list of all memory pools
- *
- * @param func
- * Iterator function
- * @param arg
- * Argument passed to iterator
- */
-void rte_mempool_walk(void (*func)(const struct rte_mempool *, void *arg),
- void *arg);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _RTE_MEMPOOL_H_ */
--
1.9.3
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