app/testpmd: add NVGRE encap/decap

Due to the complex NVGRE_ENCAP flow action and based on the fact testpmd
does not allocate memory, this patch adds a new command in testpmd to
initialise a global structure containing the necessary information to
make the outer layer of the packet.  This same global structure will
then be used by the flow command line in testpmd when the action
nvgre_encap will be parsed, at this point, the conversion into such
action becomes trivial.

This global structure is only used for the encap action.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Ori Kam <orika@mellanox.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
Tested-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 9dcfa5b..2c32029 100644 (file)
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -795,6 +795,16 @@ static void cmd_help_long_parsed(void *parsed_result,
                        " eth-dst (eth-dst)\n"
                        "       Configure the VXLAN encapsulation for flows.\n\n"
 
+                       "nvgre ip-version (ipv4|ipv6) tni (tni) ip-src"
+                       " (ip-src) ip-dst (ip-dst) eth-src (eth-src) eth-dst"
+                       " (eth-dst)\n"
+                       "       Configure the NVGRE encapsulation for flows.\n\n"
+
+                       "nvgre-with-vlan ip-version (ipv4|ipv6) tni (tni)"
+                       " ip-src (ip-src) ip-dst (ip-dst) vlan-tci (vlan-tci)"
+                       " eth-src (eth-src) eth-dst (eth-dst)\n"
+                       "       Configure the NVGRE encapsulation for flows.\n\n"
+
                        , list_pkt_forwarding_modes()
                );
        }
@@ -15029,6 +15039,154 @@ cmdline_parse_inst_t cmd_set_vxlan_with_vlan = {
        },
 };
 
+/** Set NVGRE encapsulation details */
+struct cmd_set_nvgre_result {
+       cmdline_fixed_string_t set;
+       cmdline_fixed_string_t nvgre;
+       cmdline_fixed_string_t pos_token;
+       cmdline_fixed_string_t ip_version;
+       uint32_t tni;
+       cmdline_ipaddr_t ip_src;
+       cmdline_ipaddr_t ip_dst;
+       uint16_t tci;
+       struct ether_addr eth_src;
+       struct ether_addr eth_dst;
+};
+
+cmdline_parse_token_string_t cmd_set_nvgre_set =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, set, "set");
+cmdline_parse_token_string_t cmd_set_nvgre_nvgre =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, nvgre, "nvgre");
+cmdline_parse_token_string_t cmd_set_nvgre_nvgre_with_vlan =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, nvgre,
+                                "nvgre-with-vlan");
+cmdline_parse_token_string_t cmd_set_nvgre_ip_version =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "ip-version");
+cmdline_parse_token_string_t cmd_set_nvgre_ip_version_value =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, ip_version,
+                                "ipv4#ipv6");
+cmdline_parse_token_string_t cmd_set_nvgre_tni =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "tni");
+cmdline_parse_token_num_t cmd_set_nvgre_tni_value =
+       TOKEN_NUM_INITIALIZER(struct cmd_set_nvgre_result, tni, UINT32);
+cmdline_parse_token_string_t cmd_set_nvgre_ip_src =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "ip-src");
+cmdline_parse_token_num_t cmd_set_nvgre_ip_src_value =
+       TOKEN_IPADDR_INITIALIZER(struct cmd_set_nvgre_result, ip_src);
+cmdline_parse_token_string_t cmd_set_nvgre_ip_dst =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "ip-dst");
+cmdline_parse_token_ipaddr_t cmd_set_nvgre_ip_dst_value =
+       TOKEN_IPADDR_INITIALIZER(struct cmd_set_nvgre_result, ip_dst);
+cmdline_parse_token_string_t cmd_set_nvgre_vlan =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "vlan-tci");
+cmdline_parse_token_num_t cmd_set_nvgre_vlan_value =
+       TOKEN_NUM_INITIALIZER(struct cmd_set_nvgre_result, tci, UINT16);
+cmdline_parse_token_string_t cmd_set_nvgre_eth_src =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "eth-src");
+cmdline_parse_token_etheraddr_t cmd_set_nvgre_eth_src_value =
+       TOKEN_ETHERADDR_INITIALIZER(struct cmd_set_nvgre_result, eth_src);
+cmdline_parse_token_string_t cmd_set_nvgre_eth_dst =
+       TOKEN_STRING_INITIALIZER(struct cmd_set_nvgre_result, pos_token,
+                                "eth-dst");
+cmdline_parse_token_etheraddr_t cmd_set_nvgre_eth_dst_value =
+       TOKEN_ETHERADDR_INITIALIZER(struct cmd_set_nvgre_result, eth_dst);
+
+static void cmd_set_nvgre_parsed(void *parsed_result,
+       __attribute__((unused)) struct cmdline *cl,
+       __attribute__((unused)) void *data)
+{
+       struct cmd_set_nvgre_result *res = parsed_result;
+       union {
+               uint32_t nvgre_tni;
+               uint8_t tni[4];
+       } id = {
+               .nvgre_tni = rte_cpu_to_be_32(res->tni) & RTE_BE32(0x00ffffff),
+       };
+
+       if (strcmp(res->nvgre, "nvgre") == 0)
+               nvgre_encap_conf.select_vlan = 0;
+       else if (strcmp(res->nvgre, "nvgre-with-vlan") == 0)
+               nvgre_encap_conf.select_vlan = 1;
+       if (strcmp(res->ip_version, "ipv4") == 0)
+               nvgre_encap_conf.select_ipv4 = 1;
+       else if (strcmp(res->ip_version, "ipv6") == 0)
+               nvgre_encap_conf.select_ipv4 = 0;
+       else
+               return;
+       rte_memcpy(nvgre_encap_conf.tni, &id.tni[1], 3);
+       if (nvgre_encap_conf.select_ipv4) {
+               IPV4_ADDR_TO_UINT(res->ip_src, nvgre_encap_conf.ipv4_src);
+               IPV4_ADDR_TO_UINT(res->ip_dst, nvgre_encap_conf.ipv4_dst);
+       } else {
+               IPV6_ADDR_TO_ARRAY(res->ip_src, nvgre_encap_conf.ipv6_src);
+               IPV6_ADDR_TO_ARRAY(res->ip_dst, nvgre_encap_conf.ipv6_dst);
+       }
+       if (nvgre_encap_conf.select_vlan)
+               nvgre_encap_conf.vlan_tci = rte_cpu_to_be_16(res->tci);
+       rte_memcpy(nvgre_encap_conf.eth_src, res->eth_src.addr_bytes,
+                  ETHER_ADDR_LEN);
+       rte_memcpy(nvgre_encap_conf.eth_dst, res->eth_dst.addr_bytes,
+                  ETHER_ADDR_LEN);
+}
+
+cmdline_parse_inst_t cmd_set_nvgre = {
+       .f = cmd_set_nvgre_parsed,
+       .data = NULL,
+       .help_str = "set nvgre ip-version <ipv4|ipv6> tni <tni> ip-src"
+               " <ip-src> ip-dst <ip-dst> eth-src <eth-src>"
+               " eth-dst <eth-dst>",
+       .tokens = {
+               (void *)&cmd_set_nvgre_set,
+               (void *)&cmd_set_nvgre_nvgre,
+               (void *)&cmd_set_nvgre_ip_version,
+               (void *)&cmd_set_nvgre_ip_version_value,
+               (void *)&cmd_set_nvgre_tni,
+               (void *)&cmd_set_nvgre_tni_value,
+               (void *)&cmd_set_nvgre_ip_src,
+               (void *)&cmd_set_nvgre_ip_src_value,
+               (void *)&cmd_set_nvgre_ip_dst,
+               (void *)&cmd_set_nvgre_ip_dst_value,
+               (void *)&cmd_set_nvgre_eth_src,
+               (void *)&cmd_set_nvgre_eth_src_value,
+               (void *)&cmd_set_nvgre_eth_dst,
+               (void *)&cmd_set_nvgre_eth_dst_value,
+               NULL,
+       },
+};
+
+cmdline_parse_inst_t cmd_set_nvgre_with_vlan = {
+       .f = cmd_set_nvgre_parsed,
+       .data = NULL,
+       .help_str = "set nvgre-with-vlan ip-version <ipv4|ipv6> tni <tni>"
+               " ip-src <ip-src> ip-dst <ip-dst> vlan-tci <vlan-tci>"
+               " eth-src <eth-src> eth-dst <eth-dst>",
+       .tokens = {
+               (void *)&cmd_set_nvgre_set,
+               (void *)&cmd_set_nvgre_nvgre_with_vlan,
+               (void *)&cmd_set_nvgre_ip_version,
+               (void *)&cmd_set_nvgre_ip_version_value,
+               (void *)&cmd_set_nvgre_tni,
+               (void *)&cmd_set_nvgre_tni_value,
+               (void *)&cmd_set_nvgre_ip_src,
+               (void *)&cmd_set_nvgre_ip_src_value,
+               (void *)&cmd_set_nvgre_ip_dst,
+               (void *)&cmd_set_nvgre_ip_dst_value,
+               (void *)&cmd_set_nvgre_vlan,
+               (void *)&cmd_set_nvgre_vlan_value,
+               (void *)&cmd_set_nvgre_eth_src,
+               (void *)&cmd_set_nvgre_eth_src_value,
+               (void *)&cmd_set_nvgre_eth_dst,
+               (void *)&cmd_set_nvgre_eth_dst_value,
+               NULL,
+       },
+};
+
 /* Strict link priority scheduling mode setting */
 static void
 cmd_strict_link_prio_parsed(
@@ -17655,6 +17813,8 @@ cmdline_parse_ctx_t main_ctx[] = {
 #endif
        (cmdline_parse_inst_t *)&cmd_set_vxlan,
        (cmdline_parse_inst_t *)&cmd_set_vxlan_with_vlan,
+       (cmdline_parse_inst_t *)&cmd_set_nvgre,
+       (cmdline_parse_inst_t *)&cmd_set_nvgre_with_vlan,
        (cmdline_parse_inst_t *)&cmd_ddp_add,
        (cmdline_parse_inst_t *)&cmd_ddp_del,
        (cmdline_parse_inst_t *)&cmd_ddp_get_list,

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index a99fd00..f926060 100644 (file)
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -241,6 +241,8 @@ enum index {
        ACTION_OF_PUSH_MPLS_ETHERTYPE,
        ACTION_VXLAN_ENCAP,
        ACTION_VXLAN_DECAP,
+       ACTION_NVGRE_ENCAP,
+       ACTION_NVGRE_DECAP,
 };
 
 /** Maximum size for pattern in struct rte_flow_item_raw. */
@@ -277,6 +279,22 @@ struct action_vxlan_encap_data {
        struct rte_flow_item_vxlan item_vxlan;
 };
 
+/** Maximum number of items in struct rte_flow_action_nvgre_encap. */
+#define ACTION_NVGRE_ENCAP_ITEMS_NUM 5
+
+/** Storage for struct rte_flow_action_nvgre_encap including external data. */
+struct action_nvgre_encap_data {
+       struct rte_flow_action_nvgre_encap conf;
+       struct rte_flow_item items[ACTION_NVGRE_ENCAP_ITEMS_NUM];
+       struct rte_flow_item_eth item_eth;
+       struct rte_flow_item_vlan item_vlan;
+       union {
+               struct rte_flow_item_ipv4 item_ipv4;
+               struct rte_flow_item_ipv6 item_ipv6;
+       };
+       struct rte_flow_item_nvgre item_nvgre;
+};
+
 /** Maximum number of subsequent tokens and arguments on the stack. */
 #define CTX_STACK_SIZE 16
 
@@ -796,6 +814,8 @@ static const enum index next_action[] = {
        ACTION_OF_PUSH_MPLS,
        ACTION_VXLAN_ENCAP,
        ACTION_VXLAN_DECAP,
+       ACTION_NVGRE_ENCAP,
+       ACTION_NVGRE_DECAP,
        ZERO,
 };
 
@@ -929,6 +949,9 @@ static int parse_vc_action_rss_queue(struct context *, const struct token *,
 static int parse_vc_action_vxlan_encap(struct context *, const struct token *,
                                       const char *, unsigned int, void *,
                                       unsigned int);
+static int parse_vc_action_nvgre_encap(struct context *, const struct token *,
+                                      const char *, unsigned int, void *,
+                                      unsigned int);
 static int parse_destroy(struct context *, const struct token *,
                         const char *, unsigned int,
                         void *, unsigned int);
@@ -2429,6 +2452,24 @@ static const struct token token_list[] = {
                .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
                .call = parse_vc,
        },
+       [ACTION_NVGRE_ENCAP] = {
+               .name = "nvgre_encap",
+               .help = "NVGRE encapsulation, uses configuration set by \"set"
+                       " nvgre\"",
+               .priv = PRIV_ACTION(NVGRE_ENCAP,
+                                   sizeof(struct action_nvgre_encap_data)),
+               .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
+               .call = parse_vc_action_nvgre_encap,
+       },
+       [ACTION_NVGRE_DECAP] = {
+               .name = "nvgre_decap",
+               .help = "Performs a decapsulation action by stripping all"
+                       " headers of the NVGRE tunnel network overlay from the"
+                       " matched flow.",
+               .priv = PRIV_ACTION(NVGRE_DECAP, 0),
+               .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
+               .call = parse_vc,
+       },
 };
 
 /** Remove and return last entry from argument stack. */
@@ -3093,6 +3134,97 @@ parse_vc_action_vxlan_encap(struct context *ctx, const struct token *token,
        return ret;
 }
 
+/** Parse NVGRE encap action. */
+static int
+parse_vc_action_nvgre_encap(struct context *ctx, const struct token *token,
+                           const char *str, unsigned int len,
+                           void *buf, unsigned int size)
+{
+       struct buffer *out = buf;
+       struct rte_flow_action *action;
+       struct action_nvgre_encap_data *action_nvgre_encap_data;
+       int ret;
+
+       ret = parse_vc(ctx, token, str, len, buf, size);
+       if (ret < 0)
+               return ret;
+       /* Nothing else to do if there is no buffer. */
+       if (!out)
+               return ret;
+       if (!out->args.vc.actions_n)
+               return -1;
+       action = &out->args.vc.actions[out->args.vc.actions_n - 1];
+       /* Point to selected object. */
+       ctx->object = out->args.vc.data;
+       ctx->objmask = NULL;
+       /* Set up default configuration. */
+       action_nvgre_encap_data = ctx->object;
+       *action_nvgre_encap_data = (struct action_nvgre_encap_data){
+               .conf = (struct rte_flow_action_nvgre_encap){
+                       .definition = action_nvgre_encap_data->items,
+               },
+               .items = {
+                       {
+                               .type = RTE_FLOW_ITEM_TYPE_ETH,
+                               .spec = &action_nvgre_encap_data->item_eth,
+                               .mask = &rte_flow_item_eth_mask,
+                       },
+                       {
+                               .type = RTE_FLOW_ITEM_TYPE_VLAN,
+                               .spec = &action_nvgre_encap_data->item_vlan,
+                               .mask = &rte_flow_item_vlan_mask,
+                       },
+                       {
+                               .type = RTE_FLOW_ITEM_TYPE_IPV4,
+                               .spec = &action_nvgre_encap_data->item_ipv4,
+                               .mask = &rte_flow_item_ipv4_mask,
+                       },
+                       {
+                               .type = RTE_FLOW_ITEM_TYPE_NVGRE,
+                               .spec = &action_nvgre_encap_data->item_nvgre,
+                               .mask = &rte_flow_item_nvgre_mask,
+                       },
+                       {
+                               .type = RTE_FLOW_ITEM_TYPE_END,
+                       },
+               },
+               .item_eth.type = 0,
+               .item_vlan = {
+                       .tci = nvgre_encap_conf.vlan_tci,
+                       .inner_type = 0,
+               },
+               .item_ipv4.hdr = {
+                      .src_addr = nvgre_encap_conf.ipv4_src,
+                      .dst_addr = nvgre_encap_conf.ipv4_dst,
+               },
+               .item_nvgre.flow_id = 0,
+       };
+       memcpy(action_nvgre_encap_data->item_eth.dst.addr_bytes,
+              nvgre_encap_conf.eth_dst, ETHER_ADDR_LEN);
+       memcpy(action_nvgre_encap_data->item_eth.src.addr_bytes,
+              nvgre_encap_conf.eth_src, ETHER_ADDR_LEN);
+       if (!nvgre_encap_conf.select_ipv4) {
+               memcpy(&action_nvgre_encap_data->item_ipv6.hdr.src_addr,
+                      &nvgre_encap_conf.ipv6_src,
+                      sizeof(nvgre_encap_conf.ipv6_src));
+               memcpy(&action_nvgre_encap_data->item_ipv6.hdr.dst_addr,
+                      &nvgre_encap_conf.ipv6_dst,
+                      sizeof(nvgre_encap_conf.ipv6_dst));
+               action_nvgre_encap_data->items[2] = (struct rte_flow_item){
+                       .type = RTE_FLOW_ITEM_TYPE_IPV6,
+                       .spec = &action_nvgre_encap_data->item_ipv6,
+                       .mask = &rte_flow_item_ipv6_mask,
+               };
+       }
+       if (!nvgre_encap_conf.select_vlan)
+               action_nvgre_encap_data->items[1].type =
+                       RTE_FLOW_ITEM_TYPE_VOID;
+       memcpy(action_nvgre_encap_data->item_nvgre.tni, nvgre_encap_conf.tni,
+              RTE_DIM(nvgre_encap_conf.tni));
+       action->conf = &action_nvgre_encap_data->conf;
+       return ret;
+}
+
 /** Parse tokens for destroy command. */
 static int
 parse_destroy(struct context *ctx, const struct token *token,

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index e8fe677..277313d 100644 (file)
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -408,6 +408,21 @@ struct vxlan_encap_conf vxlan_encap_conf = {
        .eth_dst = "\xff\xff\xff\xff\xff\xff",
 };
 
+struct nvgre_encap_conf nvgre_encap_conf = {
+       .select_ipv4 = 1,
+       .select_vlan = 0,
+       .tni = "\x00\x00\x00",
+       .ipv4_src = IPv4(127, 0, 0, 1),
+       .ipv4_dst = IPv4(255, 255, 255, 255),
+       .ipv6_src = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x00\x01",
+       .ipv6_dst = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x11\x11",
+       .vlan_tci = 0,
+       .eth_src = "\x00\x00\x00\x00\x00\x00",
+       .eth_dst = "\xff\xff\xff\xff\xff\xff",
+};
+
 /* Forward function declarations */
 static void map_port_queue_stats_mapping_registers(portid_t pi,
                                                   struct rte_port *port);

diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 1b61202..a1f6614 100644 (file)
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -472,6 +472,21 @@ struct vxlan_encap_conf {
 };
 struct vxlan_encap_conf vxlan_encap_conf;
 
+/* NVGRE encap/decap parameters. */
+struct nvgre_encap_conf {
+       uint32_t select_ipv4:1;
+       uint32_t select_vlan:1;
+       uint8_t tni[3];
+       rte_be32_t ipv4_src;
+       rte_be32_t ipv4_dst;
+       uint8_t ipv6_src[16];
+       uint8_t ipv6_dst[16];
+       rte_be16_t vlan_tci;
+       uint8_t eth_src[ETHER_ADDR_LEN];
+       uint8_t eth_dst[ETHER_ADDR_LEN];
+};
+struct nvgre_encap_conf nvgre_encap_conf;
+
 static inline unsigned int
 lcore_num(void)
 {

diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 7a5c22a..681784b 100644 (file)
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -1559,6 +1559,21 @@ flow rule using the action vxlan_encap will use the last configuration set.
 To have a different encapsulation header, one of those commands must be called
 before the flow rule creation.
 
+Config NVGRE Encap outer layers
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Configure the outer layer to encapsulate a packet inside a NVGRE tunnel::
+
+ set nvgre ip-version (ipv4|ipv6) tni (tni) ip-src (ip-src) ip-dst (ip-dst) \
+        eth-src (eth-src) eth-dst (eth-dst)
+ set nvgre-with-vlan ip-version (ipv4|ipv6) tni (tni) ip-src (ip-src) \
+        ip-dst (ip-dst) vlan-tci (vlan-tci) eth-src (eth-src) eth-dst (eth-dst)
+
+Those command will set an internal configuration inside testpmd, any following
+flow rule using the action nvgre_encap will use the last configuration set.
+To have a different encapsulation header, one of those commands must be called
+before the flow rule creation.
+
 Port Functions
 --------------
 
@@ -3680,6 +3695,12 @@ This section lists supported actions and their attributes, if any.
 - ``vxlan_decap``: Performs a decapsulation action by stripping all headers of
   the VXLAN tunnel network overlay from the matched flow.
 
+- ``nvgre_encap``: Performs a NVGRE encapsulation, outer layer configuration
+  is done through `Config NVGRE Encap outer layers`_.
+
+- ``nvgre_decap``: Performs a decapsulation action by stripping all headers of
+  the NVGRE tunnel network overlay from the matched flow.
+
 Destroying flow rules
 ~~~~~~~~~~~~~~~~~~~~~
 
@@ -3977,6 +3998,37 @@ IPv6 VXLAN outer header::
  testpmd> flow create 0 ingress pattern end actions vxlan_encap /
          queue index 0 / end
 
+Sample NVGRE encapsulation rule
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+NVGRE encapsulation outer layer has default value pre-configured in testpmd
+source code, those can be changed by using the following commands
+
+IPv4 NVGRE outer header::
+
+ testpmd> set nvgre ip-version ipv4 tni 4 ip-src 127.0.0.1 ip-dst 128.0.0.1
+        eth-src 11:11:11:11:11:11 eth-dst 22:22:22:22:22:22
+ testpmd> flow create 0 ingress pattern end actions nvgre_encap /
+        queue index 0 / end
+
+ testpmd> set nvgre-with-vlan ip-version ipv4 tni 4 ip-src 127.0.0.1
+         ip-dst 128.0.0.1 vlan-tci 34 eth-src 11:11:11:11:11:11
+         eth-dst 22:22:22:22:22:22
+ testpmd> flow create 0 ingress pattern end actions nvgre_encap /
+         queue index 0 / end
+
+IPv6 NVGRE outer header::
+
+ testpmd> set nvgre ip-version ipv6 tni 4 ip-src ::1 ip-dst ::2222
+        eth-src 11:11:11:11:11:11 eth-dst 22:22:22:22:22:22
+ testpmd> flow create 0 ingress pattern end actions nvgre_encap /
+        queue index 0 / end
+
+ testpmd> set nvgre-with-vlan ip-version ipv6 tni 4 ip-src ::1 ip-dst ::2222
+        vlan-tci 34 eth-src 11:11:11:11:11:11 eth-dst 22:22:22:22:22:22
+ testpmd> flow create 0 ingress pattern end actions nvgre_encap /
+        queue index 0 / end
+
 BPF Functions
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