This patch defines new RSS offload type for L2TPv2, which
is required when users want to distribute packets based on
the L2TPv2 session ID field.

Signed-off-by: Jie Wang <jie1x.w...@intel.com>
---
 app/test-pmd/cmdline.c                 | 10 ++++++----
 app/test-pmd/config.c                  |  3 ++-
 doc/guides/rel_notes/release_22_03.rst |  5 +++++
 lib/ethdev/rte_ethdev.h                |  7 +++++++
 4 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index e626b1c7d9..d535311f21 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -2178,7 +2178,7 @@ cmd_config_rss_parsed(void *parsed_result,
                        RTE_ETH_RSS_TCP | RTE_ETH_RSS_UDP | RTE_ETH_RSS_SCTP |
                        RTE_ETH_RSS_L2_PAYLOAD | RTE_ETH_RSS_L2TPV3 | 
RTE_ETH_RSS_ESP |
                        RTE_ETH_RSS_AH | RTE_ETH_RSS_PFCP | RTE_ETH_RSS_GTPU |
-                       RTE_ETH_RSS_ECPRI;
+                       RTE_ETH_RSS_ECPRI | RTE_ETH_RSS_L2TPV2;
        else if (!strcmp(res->value, "eth"))
                rss_conf.rss_hf = RTE_ETH_RSS_ETH;
        else if (!strcmp(res->value, "vlan"))
@@ -2256,6 +2256,8 @@ cmd_config_rss_parsed(void *parsed_result,
                rss_conf.rss_hf = (rss_hf | RTE_ETH_RSS_LEVEL_INNERMOST);
        } else if (!strcmp(res->value, "default"))
                use_default = 1;
+       else if (!strcmp(res->value, "l2tpv2"))
+               rss_conf.rss_hf = RTE_ETH_RSS_L2TPV2;
        else if (isdigit(res->value[0]) && atoi(res->value) > 0 &&
                                                atoi(res->value) < 64)
                rss_conf.rss_hf = 1ULL << atoi(res->value);
@@ -2314,7 +2316,7 @@ cmdline_parse_inst_t cmd_config_rss = {
        .help_str = "port config all rss "
                "all|default|eth|vlan|ip|tcp|udp|sctp|ether|port|vxlan|geneve|"
                
"nvgre|vxlan-gpe|l2tpv3|esp|ah|pfcp|ecpri|mpls|none|level-default|"
-               "level-outer|level-inner|ipv4-chksum|<flowtype_id>",
+               "level-outer|level-inner|ipv4-chksum|l2tpv2|<flowtype_id>",
        .tokens = {
                (void *)&cmd_config_rss_port,
                (void *)&cmd_config_rss_keyword,
@@ -2429,7 +2431,7 @@ cmdline_parse_token_string_t 
cmd_config_rss_hash_key_rss_type =
                                 "ipv6-tcp-ex#ipv6-udp-ex#"
                                 
"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");
+                                
"l2tpv3#esp#ah#pfcp#pppoe#gtpu#ecpri#mpls#l2tpv2");
 cmdline_parse_token_string_t cmd_config_rss_hash_key_value =
        TOKEN_STRING_INITIALIZER(struct cmd_config_rss_hash_key, key, NULL);
 
@@ -2442,7 +2444,7 @@ cmdline_parse_inst_t cmd_config_rss_hash_key = {
                "l2-payload|ipv6-ex|ipv6-tcp-ex|ipv6-udp-ex|"
                "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 "
+               "l2tpv3|esp|ah|pfcp|pppoe|gtpu|ecpri|mpls|l2tpv2 "
                "<string of hex digits (variable length, NIC dependent)>",
        .tokens = {
                (void *)&cmd_config_rss_hash_key_port,
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 1722d6c8f8..ec922bd304 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -90,7 +90,7 @@ const struct rss_type_info rss_type_table[] = {
        { "all", RTE_ETH_RSS_ETH | RTE_ETH_RSS_VLAN | RTE_ETH_RSS_IP | 
RTE_ETH_RSS_TCP |
                RTE_ETH_RSS_UDP | RTE_ETH_RSS_SCTP | RTE_ETH_RSS_L2_PAYLOAD |
                RTE_ETH_RSS_L2TPV3 | RTE_ETH_RSS_ESP | RTE_ETH_RSS_AH | 
RTE_ETH_RSS_PFCP |
-               RTE_ETH_RSS_GTPU | RTE_ETH_RSS_ECPRI | RTE_ETH_RSS_MPLS},
+               RTE_ETH_RSS_GTPU | RTE_ETH_RSS_ECPRI | RTE_ETH_RSS_MPLS | 
RTE_ETH_RSS_L2TPV2},
        { "none", 0 },
        { "eth", RTE_ETH_RSS_ETH },
        { "l2-src-only", RTE_ETH_RSS_L2_SRC_ONLY },
@@ -143,6 +143,7 @@ const struct rss_type_info rss_type_table[] = {
        { "mpls", RTE_ETH_RSS_MPLS },
        { "ipv4-chksum", RTE_ETH_RSS_IPV4_CHKSUM },
        { "l4-chksum", RTE_ETH_RSS_L4_CHKSUM },
+       { "l2tpv2", RTE_ETH_RSS_L2TPV2 },
        { NULL, 0 },
 };
 
diff --git a/doc/guides/rel_notes/release_22_03.rst 
b/doc/guides/rel_notes/release_22_03.rst
index 33be3241b9..9a507ab9ea 100644
--- a/doc/guides/rel_notes/release_22_03.rst
+++ b/doc/guides/rel_notes/release_22_03.rst
@@ -55,6 +55,11 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Added new RSS offload types for L2TPv2 in RSS flow.**
+
+  Added macro RTE_ETH_RSS_L2TPV2, now L2TPv2 session ID field can be used as
+  input set for RSS.
+
 * **Updated Cisco enic driver.**
 
   * Added rte_flow support for matching GENEVE packets.
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 147cc1ced3..1e493a1e33 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -651,6 +651,13 @@ struct rte_eth_rss_conf {
 #define RTE_ETH_RSS_L4_CHKSUM          RTE_BIT64(35)
 #define ETH_RSS_L4_CHKSUM RTE_DEPRECATED(ETH_RSS_L4_CHKSUM) 
RTE_ETH_RSS_L4_CHKSUM
 
+/*
+ * Below macro is defined for RSS offload type, it can be used to
+ * fill rte_eth_rss_conf.rss_hf or rte_flow_action_rss.types.
+ */
+#define RTE_ETH_RSS_L2TPV2            RTE_BIT64(36)
+#define ETH_RSS_L2TPV2 RTE_DEPRECATED(ETH_RSS_L2TPV2) RTE_ETH_RSS_L2TPV2
+
 /*
  * We use the following macros to combine with above RTE_ETH_RSS_* for
  * more specific input set selection. These bits are defined starting
-- 
2.25.1

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