[v3] ethdev: add support for RSS based on IPv6 flow label
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Commit Message
On supporting hardware, the 20-bit Flow Label field in the
IPv6 header can be used to perform RSS in the ingress path.
Flow label values can be chosen such that they can be
used as part of the input to a hash function used in a load
distribution scheme.
Example to configure IPv6 flow label based RSS:
flow create 0 ingress pattern eth / ipv6 / tcp / end actions rss types ipv6-flow-label end / end
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
v1->v2: Merge ethdev and testpmd patches into one patch
v2->v3: Update testpmd documentation
---
app/test-pmd/cmdline.c | 8 ++++----
app/test-pmd/config.c | 1 +
doc/guides/testpmd_app_ug/testpmd_funcs.rst | 2 +-
lib/ethdev/rte_ethdev.h | 1 +
4 files changed, 7 insertions(+), 5 deletions(-)
Comments
On 2/9/2024 6:16 PM, Ajit Khaparde wrote:
> On supporting hardware, the 20-bit Flow Label field in the
> IPv6 header can be used to perform RSS in the ingress path.
>
> Flow label values can be chosen such that they can be
> used as part of the input to a hash function used in a load
> distribution scheme.
>
> Example to configure IPv6 flow label based RSS:
> flow create 0 ingress pattern eth / ipv6 / tcp / end actions rss types ipv6-flow-label end / end
>
> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
>
Acked-by: Ferruh Yigit <ferruh.yigit@amd.com>
Applied to dpdk-next-net/main, thanks.
@@ -715,7 +715,7 @@ static void cmd_help_long_parsed(void *parsed_result,
"port config all rss (all|default|level-default|level-outer|level-inner|"
"ip|tcp|udp|sctp|tunnel|vlan|none|"
"ipv4|ipv4-frag|ipv4-tcp|ipv4-udp|ipv4-sctp|ipv4-other|"
- "ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp|ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|"
+ "ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp|ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|ipv6-flow-label|"
"l2-payload|port|vxlan|geneve|nvgre|gtpu|eth|s-vlan|c-vlan|"
"esp|ah|l2tpv3|pfcp|pppoe|ecpri|mpls|ipv4-chksum|l4-chksum|"
"l2tpv2|l3-pre96|l3-pre64|l3-pre56|l3-pre48|l3-pre40|l3-pre32|"
@@ -2133,7 +2133,7 @@ static cmdline_parse_inst_t cmd_config_rss = {
"all|default|level-default|level-outer|level-inner|"
"ip|tcp|udp|sctp|tunnel|vlan|none|"
"ipv4|ipv4-frag|ipv4-tcp|ipv4-udp|ipv4-sctp|ipv4-other|"
- "ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp|ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|"
+ "ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp|ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|ipv6-flow-label|"
"l2-payload|port|vxlan|geneve|nvgre|gtpu|eth|s-vlan|c-vlan|"
"esp|ah|l2tpv3|pfcp|pppoe|ecpri|mpls|ipv4-chksum|l4-chksum|"
"l2tpv2|l3-pre96|l3-pre64|l3-pre56|l3-pre48|l3-pre40|l3-pre32|"
@@ -2249,7 +2249,7 @@ static cmdline_parse_token_string_t cmd_config_rss_hash_key_rss_type =
"ipv4#ipv4-frag#ipv4-tcp#ipv4-udp#ipv4-sctp#"
"ipv4-other#ipv6#ipv6-frag#ipv6-tcp#ipv6-udp#"
"ipv6-sctp#ipv6-other#l2-payload#ipv6-ex#"
- "ipv6-tcp-ex#ipv6-udp-ex#"
+ "ipv6-tcp-ex#ipv6-udp-ex#ipv6-flow-label#"
"l3-src-only#l3-dst-only#l4-src-only#l4-dst-only#"
"l2-src-only#l2-dst-only#s-vlan#c-vlan#"
"l2tpv3#esp#ah#pfcp#pppoe#gtpu#ecpri#mpls#l2tpv2");
@@ -2262,7 +2262,7 @@ static cmdline_parse_inst_t cmd_config_rss_hash_key = {
.help_str = "port config <port_id> rss-hash-key "
"ipv4|ipv4-frag|ipv4-tcp|ipv4-udp|ipv4-sctp|ipv4-other|"
"ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp|ipv6-other|"
- "l2-payload|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|"
+ "l2-payload|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|ipv6-flow-label|"
"l3-src-only|l3-dst-only|l4-src-only|l4-dst-only|"
"l2-src-only|l2-dst-only|s-vlan|c-vlan|"
"l2tpv3|esp|ah|pfcp|pppoe|gtpu|ecpri|mpls|l2tpv2 "
@@ -148,6 +148,7 @@ const struct rss_type_info rss_type_table[] = {
{ "l4-src-only", RTE_ETH_RSS_L4_SRC_ONLY },
{ "l3-dst-only", RTE_ETH_RSS_L3_DST_ONLY },
{ "l3-src-only", RTE_ETH_RSS_L3_SRC_ONLY },
+ { "ipv6-flow-label", RTE_ETH_RSS_IPV6_FLOW_LABEL },
{ NULL, 0},
};
@@ -2114,7 +2114,7 @@ Set the RSS (Receive Side Scaling) mode on or off::
ip|tcp|udp|sctp|tunnel|vlan|none| \
ipv4|ipv4-frag|ipv4-tcp|ipv4-udp|ipv4-sctp|ipv4-other| \
ipv6|ipv6-frag|ipv6-tcp|ipv6-udp|ipv6-sctp| \
- ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex| \
+ ipv6-other|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|ipv6-flow-label| \
l2-payload|port|vxlan|geneve|nvgre|gtpu|eth|s-vlan|c-vlan| \
esp|ah|l2tpv3|pfcp|pppoe|ecpri|mpls|ipv4-chksum|l4-chksum| \
l2tpv2|l3-pre96|l3-pre64|l3-pre56|l3-pre48|l3-pre40|l3-pre32| \
@@ -587,6 +587,7 @@ struct rte_eth_rss_conf {
#define RTE_ETH_RSS_L4_CHKSUM RTE_BIT64(35)
#define RTE_ETH_RSS_L2TPV2 RTE_BIT64(36)
+#define RTE_ETH_RSS_IPV6_FLOW_LABEL RTE_BIT64(37)
/*
* We use the following macros to combine with above RTE_ETH_RSS_* for