[dpdk-dev] [PATCH v3] net/sfc: enable TSO by default
Andrew Rybchenko
arybchenko at solarflare.com
Fri Jan 20 16:22:56 CET 2017
Remove RTE_LIBRTE_SFC_EFX_TSO config option since it is not
required any more:
- unreasonable limit on number of Tx queues when TSO is not
actually required should be solved using per-device parameter
- performance difference with and without TSO compiled in is small
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
config/common_base | 1 -
doc/guides/nics/sfc_efx.rst | 6 ------
drivers/net/sfc/Makefile | 6 ++----
drivers/net/sfc/sfc.c | 4 ----
drivers/net/sfc/sfc_tx.c | 2 --
drivers/net/sfc/sfc_tx.h | 18 ------------------
6 files changed, 2 insertions(+), 35 deletions(-)
diff --git a/config/common_base b/config/common_base
index b9fb8e2..c33179b 100644
--- a/config/common_base
+++ b/config/common_base
@@ -261,7 +261,6 @@ CONFIG_RTE_LIBRTE_BNXT_PMD=y
#
CONFIG_RTE_LIBRTE_SFC_EFX_PMD=y
CONFIG_RTE_LIBRTE_SFC_EFX_DEBUG=n
-CONFIG_RTE_LIBRTE_SFC_EFX_TSO=n
#
# Compile software PMD backed by SZEDATA2 device
diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 6be4fba..0a05a0a 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -171,12 +171,6 @@ Please note that enabling debugging options may affect system performance.
Enable compilation of the extra run-time consistency checks.
-- ``CONFIG_RTE_LIBRTE_SFC_EFX_TSO`` (default **n**)
-
- Toggle TCP segmentation offload support.
- Enabling the feature limits the number of available transmit queues
- significantly due to the limited number of adapter TSO contexts.
-
Per-Device Parameters
~~~~~~~~~~~~~~~~~~~~~
diff --git a/drivers/net/sfc/Makefile b/drivers/net/sfc/Makefile
index 14d6536..619a0ed 100644
--- a/drivers/net/sfc/Makefile
+++ b/drivers/net/sfc/Makefile
@@ -89,8 +89,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += sfc_ev.c
SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += sfc_port.c
SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += sfc_rx.c
SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += sfc_tx.c
-
-SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_TSO) += sfc_tso.c
+SRCS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += sfc_tso.c
VPATH += $(SRCDIR)/base
@@ -140,7 +139,6 @@ DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += lib/librte_kvargs
DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += lib/librte_ether
DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += lib/librte_mempool
DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += lib/librte_mbuf
-
-DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_TSO) += lib/librte_net
+DEPDIRS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += lib/librte_net
include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/net/sfc/sfc.c b/drivers/net/sfc/sfc.c
index 648ad8c..457a53e 100644
--- a/drivers/net/sfc/sfc.c
+++ b/drivers/net/sfc/sfc.c
@@ -621,13 +621,9 @@
if (rc != 0)
goto fail_set_rss_defaults;
-#ifdef RTE_LIBRTE_SFC_EFX_TSO
sa->tso = efx_nic_cfg_get(sa->nic)->enc_fw_assisted_tso_v2_enabled;
if (!sa->tso)
sfc_warn(sa, "TSO support isn't available on this adapter");
-#else /* !RTE_LIBRTE_SFC_EFX_TSO */
- sa->tso = B_FALSE;
-#endif /* RTE_LIBRTE_SFC_EFX_TSO */
sfc_log_init(sa, "fini nic");
efx_nic_fini(enp);
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index 3e64c0f..e772584 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -650,7 +650,6 @@
*/
pkt_descs += sfc_tx_maybe_insert_tag(txq, m_seg, &pend);
-#ifdef RTE_LIBRTE_SFC_EFX_TSO
if (m_seg->ol_flags & PKT_TX_TCP_SEG) {
/*
* We expect correct 'pkt->l[2, 3, 4]_len' values
@@ -688,7 +687,6 @@
* as for the usual non-TSO path
*/
}
-#endif /* RTE_LIBRTE_SFC_EFX_TSO */
for (; m_seg != NULL; m_seg = m_seg->next) {
efsys_dma_addr_t next_frag;
diff --git a/drivers/net/sfc/sfc_tx.h b/drivers/net/sfc/sfc_tx.h
index 581e2aa..39977a5 100644
--- a/drivers/net/sfc/sfc_tx.h
+++ b/drivers/net/sfc/sfc_tx.h
@@ -50,9 +50,7 @@
struct sfc_tx_sw_desc {
struct rte_mbuf *mbuf;
-#ifdef RTE_LIBRTE_SFC_EFX_TSO
uint8_t *tsoh; /* Buffer to store TSO header */
-#endif /* RTE_LIBRTE_SFC_EFX_TSO */
};
enum sfc_txq_state_bit {
@@ -116,7 +114,6 @@ int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
uint16_t sfc_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
-#ifdef RTE_LIBRTE_SFC_EFX_TSO
/* From 'sfc_tso.c' */
int sfc_tso_alloc_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
unsigned int txq_entries, unsigned int socket_id);
@@ -125,21 +122,6 @@ void sfc_tso_free_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
int sfc_tso_do(struct sfc_txq *txq, unsigned int idx, struct rte_mbuf **in_seg,
size_t *in_off, efx_desc_t **pend, unsigned int *pkt_descs,
size_t *pkt_len);
-#else /* !RTE_LIBRTE_SFC_EFX_TSO */
-static inline int
-sfc_tso_alloc_tsoh_objs(__rte_unused struct sfc_tx_sw_desc *sw_ring,
- __rte_unused unsigned int txq_entries,
- __rte_unused unsigned int socket_id)
-{
- return 0;
-}
-
-static inline void
-sfc_tso_free_tsoh_objs(__rte_unused struct sfc_tx_sw_desc *sw_ring,
- __rte_unused unsigned int txq_entries)
-{
-}
-#endif /* RTE_LIBRTE_SFC_EFX_TSO */
#ifdef __cplusplus
}
--
1.8.2.3
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