[dpdk-dev] [PATCH 10/11] net/sfc: add UDP in flow API filters support
Andrew Rybchenko
arybchenko at solarflare.com
Thu Mar 2 17:03:10 CET 2017
From: Roman Zhukov <Roman.Zhukov at oktetlabs.ru>
Exact match of source and destination ports is supported by parser.
IP protocol match is enforced to UDP.
Signed-off-by: Roman Zhukov <Roman.Zhukov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
Reviewed-by: Andrew Lee <alee at solarflare.com>
---
doc/guides/nics/sfc_efx.rst | 2 ++
drivers/net/sfc/sfc_flow.c | 76 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 78 insertions(+)
diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 7e00fdc..4d91b1d 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -139,6 +139,8 @@ Supported pattern items:
- TCP (exact match of source/destination ports)
+- UDP (exact match of source/destination ports)
+
Supported actions:
- VOID
diff --git a/drivers/net/sfc/sfc_flow.c b/drivers/net/sfc/sfc_flow.c
index 6825d04..7a1f38f 100644
--- a/drivers/net/sfc/sfc_flow.c
+++ b/drivers/net/sfc/sfc_flow.c
@@ -76,6 +76,7 @@ static sfc_flow_item_parse sfc_flow_parse_vlan;
static sfc_flow_item_parse sfc_flow_parse_ipv4;
static sfc_flow_item_parse sfc_flow_parse_ipv6;
static sfc_flow_item_parse sfc_flow_parse_tcp;
+static sfc_flow_item_parse sfc_flow_parse_udp;
static boolean_t
sfc_flow_is_zero(const uint8_t *buf, unsigned int size)
@@ -555,6 +556,75 @@ sfc_flow_parse_tcp(const struct rte_flow_item *item,
return -rte_errno;
}
+static int
+sfc_flow_parse_udp(const struct rte_flow_item *item,
+ efx_filter_spec_t *efx_spec,
+ struct rte_flow_error *error)
+{
+ int rc;
+ const struct rte_flow_item_udp *spec = NULL;
+ const struct rte_flow_item_udp *mask = NULL;
+ const struct rte_flow_item_udp supp_mask = {
+ .hdr = {
+ .src_port = 0xffff,
+ .dst_port = 0xffff,
+ }
+ };
+
+ rc = sfc_flow_parse_init(item,
+ (const void **)&spec,
+ (const void **)&mask,
+ &supp_mask,
+ &rte_flow_item_udp_mask,
+ sizeof(struct rte_flow_item_udp),
+ error);
+ if (rc != 0)
+ return rc;
+
+ /*
+ * Filtering by UDP source and destination ports requires
+ * the appropriate IP_PROTO in hardware filters
+ */
+ if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) {
+ efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
+ efx_spec->efs_ip_proto = EFX_IPPROTO_UDP;
+ } else if (efx_spec->efs_ip_proto != EFX_IPPROTO_UDP) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "IP proto in pattern with UDP item should be appropriate");
+ return -rte_errno;
+ }
+
+ if (spec == NULL)
+ return 0;
+
+ /*
+ * Source and destination ports are in big-endian byte order in item and
+ * in little-endian in efx_spec, so byte swap is used
+ */
+ if (mask->hdr.src_port == supp_mask.hdr.src_port) {
+ efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_PORT;
+ efx_spec->efs_rem_port = rte_bswap16(spec->hdr.src_port);
+ } else if (mask->hdr.src_port != 0) {
+ goto fail_bad_mask;
+ }
+
+ if (mask->hdr.dst_port == supp_mask.hdr.dst_port) {
+ efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_PORT;
+ efx_spec->efs_loc_port = rte_bswap16(spec->hdr.dst_port);
+ } else if (mask->hdr.dst_port != 0) {
+ goto fail_bad_mask;
+ }
+
+ return 0;
+
+fail_bad_mask:
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "Bad mask in the UDP pattern item");
+ return -rte_errno;
+}
+
static const struct sfc_flow_item sfc_flow_items[] = {
{
.type = RTE_FLOW_ITEM_TYPE_VOID,
@@ -592,6 +662,12 @@ static const struct sfc_flow_item sfc_flow_items[] = {
.layer = SFC_FLOW_ITEM_L4,
.parse = sfc_flow_parse_tcp,
},
+ {
+ .type = RTE_FLOW_ITEM_TYPE_UDP,
+ .prev_layer = SFC_FLOW_ITEM_L3,
+ .layer = SFC_FLOW_ITEM_L4,
+ .parse = sfc_flow_parse_udp,
+ },
};
/*
--
2.9.3
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