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                      | 16 +++++++++-------
 app/test-pmd/config.c                       |  3 ++-
 doc/guides/rel_notes/release_22_03.rst      |  5 +++++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 ++--
 lib/ethdev/rte_ethdev.h                     |  2 ++
 5 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 9f10f35b40..e2fb7c9905 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -798,8 +798,8 @@ static void cmd_help_long_parsed(void *parsed_result,
                        "receive buffers available.\n\n"
 
                        "port config all rss (all|default|ip|tcp|udp|sctp|"
-                       
"ether|port|vxlan|geneve|nvgre|vxlan-gpe|ecpri|mpls|none|level-default|"
-                       "level-outer|level-inner|<flowtype_id>)\n"
+                       
"ether|port|vxlan|geneve|nvgre|vxlan-gpe|ecpri|mpls|ipv4-chksum|l2tpv2|"
+                       
"none|level-default|level-outer|level-inner|<flowtype_id>)\n"
                        "    Set the RSS mode.\n\n"
 
                        "port config port-id rss reta 
(hash,queue)[,(hash,queue)]\n"
@@ -2183,7 +2183,7 @@ 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"))
@@ -2248,6 +2248,8 @@ cmd_config_rss_parsed(void *parsed_result,
                rss_conf.rss_hf = RTE_ETH_RSS_MPLS;
        else if (!strcmp(res->value, "ipv4-chksum"))
                rss_conf.rss_hf = RTE_ETH_RSS_IPV4_CHKSUM;
+       else if (!strcmp(res->value, "l2tpv2"))
+               rss_conf.rss_hf = RTE_ETH_RSS_L2TPV2;
        else if (!strcmp(res->value, "none"))
                rss_conf.rss_hf = 0;
        else if (!strcmp(res->value, "level-default")) {
@@ -2318,8 +2320,8 @@ cmdline_parse_inst_t cmd_config_rss = {
        .data = NULL,
        .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>",
+               
"nvgre|vxlan-gpe|l2tpv3|esp|ah|pfcp|ecpri|mpls|ipv4-chksum|l2tpv2|"
+               "none|level-default|level-outer|level-inner|<flowtype_id>",
        .tokens = {
                (void *)&cmd_config_rss_port,
                (void *)&cmd_config_rss_keyword,
@@ -2434,7 +2436,7 @@ 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);
 
@@ -2447,7 +2449,7 @@ 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 e812f57151..de1ec14bc7 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 f03183ee86..17c25d899c 100644
--- a/doc/guides/rel_notes/release_22_03.rst
+++ b/doc/guides/rel_notes/release_22_03.rst
@@ -64,6 +64,11 @@ New Features
     - ``rte_ipv6_udptcp_cksum_mbuf()``
     - ``rte_ipv6_udptcp_cksum_mbuf_verify()``
 
+* **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.
+
 * **Added an API to enable queue based priority flow ctrl(PFC).**
 
   New APIs, ``rte_eth_dev_priority_flow_ctrl_queue_info_get()`` and
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst 
b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index b2e98df6e1..f8adcb0a40 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -2308,11 +2308,11 @@ port config - RSS
 
 Set the RSS (Receive Side Scaling) mode on or off::
 
-   testpmd> 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)
+   testpmd> 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|l2tpv2|none)
 
 RSS is on by default.
 
-The ``all`` option is equivalent to 
eth|vlan|ip|tcp|udp|sctp|ether|l2tpv3|esp|ah|pfcp.
+The ``all`` option is equivalent to 
eth|vlan|ip|tcp|udp|sctp|ether|l2tpv3|esp|ah|pfcp|l2tpv2.
 
 The ``default`` option enables all supported RSS types reported by device info.
 
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 2660e4f374..e6bc1c808a 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -651,6 +651,8 @@ 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
 
+#define RTE_ETH_RSS_L2TPV2            RTE_BIT64(36)
+
 /*
  * 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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