Acked-by: Ori Kam <or...@mellanox.com>

> -----Original Message-----
> From: Nelio Laranjeiro [mailto:nelio.laranje...@6wind.com]
> Sent: Thursday, June 21, 2018 10:14 AM
> To: dev@dpdk.org; Adrien Mazarguil <adrien.mazarg...@6wind.com>;
> Wenzhuo Lu <wenzhuo...@intel.com>; Jingjing Wu
> <jingjing...@intel.com>; Bernard Iremonger
> <bernard.iremon...@intel.com>; Mohammad Abdul Awal
> <mohammad.abdul.a...@intel.com>; Ori Kam <or...@mellanox.com>;
> Stephen Hemminger <step...@networkplumber.org>
> Subject: [PATCH v4 1/2] app/testpmd: add VXLAN encap/decap support
> 
> Due to the complex VXLAN_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
> vxlan_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.laranje...@6wind.com>
> ---
>  app/test-pmd/cmdline.c                      | 134 +++++++++++++++++++
>  app/test-pmd/cmdline_flow.c                 | 139 ++++++++++++++++++++
>  app/test-pmd/testpmd.c                      |  17 +++
>  app/test-pmd/testpmd.h                      |  17 +++
>  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  35 +++++
>  5 files changed, 342 insertions(+)
> 
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
> index 27e2aa8c8..048fff2bd 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -781,6 +781,14 @@ static void cmd_help_long_parsed(void
> *parsed_result,
>                       "port tm hierarchy commit (port_id)
> (clean_on_fail)\n"
>                       "       Commit tm hierarchy.\n\n"
> 
> +                     "vxlan ipv4|ipv6 vni udp-src udp-dst ip-src ip-dst"
> +                     " eth-src eth-dst\n"
> +                     "       Configure the VXLAN encapsulation for
> flows.\n\n"
> +
> +                     "vxlan-with-vlan ipv4|ipv6 vni udp-src udp-dst ip-src
> ip-dst"
> +                     " vlan-tci eth-src eth-dst\n"
> +                     "       Configure the VXLAN encapsulation for
> flows.\n\n"
> +
>                       , list_pkt_forwarding_modes()
>               );
>       }
> @@ -14838,6 +14846,130 @@ cmdline_parse_inst_t
> cmd_set_port_tm_hierarchy_default = {
>  };
>  #endif
> 
> +/** Set VXLAN encapsulation details */
> +struct cmd_set_vxlan_result {
> +     cmdline_fixed_string_t set;
> +     cmdline_fixed_string_t vxlan;
> +     cmdline_fixed_string_t ip_version;
> +     uint32_t vlan_present:1;
> +     uint32_t vni;
> +     uint16_t udp_src;
> +     uint16_t udp_dst;
> +     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_vxlan_set =
> +     TOKEN_STRING_INITIALIZER(struct cmd_set_vxlan_result, set,
> "set");
> +cmdline_parse_token_string_t cmd_set_vxlan_vxlan =
> +     TOKEN_STRING_INITIALIZER(struct cmd_set_vxlan_result, vxlan,
> "vxlan");
> +cmdline_parse_token_string_t cmd_set_vxlan_vxlan_with_vlan =
> +     TOKEN_STRING_INITIALIZER(struct cmd_set_vxlan_result, vxlan,
> +                              "vxlan-with-vlan");
> +cmdline_parse_token_string_t cmd_set_vxlan_ip_version =
> +     TOKEN_STRING_INITIALIZER(struct cmd_set_vxlan_result,
> ip_version,
> +                              "ipv4#ipv6");
> +cmdline_parse_token_num_t cmd_set_vxlan_vni =
> +     TOKEN_NUM_INITIALIZER(struct cmd_set_vxlan_result, vni,
> UINT32);
> +cmdline_parse_token_num_t cmd_set_vxlan_udp_src =
> +     TOKEN_NUM_INITIALIZER(struct cmd_set_vxlan_result, udp_src,
> UINT16);
> +cmdline_parse_token_num_t cmd_set_vxlan_udp_dst =
> +     TOKEN_NUM_INITIALIZER(struct cmd_set_vxlan_result, udp_dst,
> UINT16);
> +cmdline_parse_token_ipaddr_t cmd_set_vxlan_ip_src =
> +     TOKEN_IPADDR_INITIALIZER(struct cmd_set_vxlan_result, ip_src);
> +cmdline_parse_token_ipaddr_t cmd_set_vxlan_ip_dst =
> +     TOKEN_IPADDR_INITIALIZER(struct cmd_set_vxlan_result, ip_dst);
> +cmdline_parse_token_num_t cmd_set_vxlan_vlan =
> +     TOKEN_NUM_INITIALIZER(struct cmd_set_vxlan_result, tci, UINT16);
> +cmdline_parse_token_etheraddr_t cmd_set_vxlan_eth_src =
> +     TOKEN_ETHERADDR_INITIALIZER(struct cmd_set_vxlan_result,
> eth_src);
> +cmdline_parse_token_etheraddr_t cmd_set_vxlan_eth_dst =
> +     TOKEN_ETHERADDR_INITIALIZER(struct cmd_set_vxlan_result,
> eth_dst);
> +
> +static void cmd_set_vxlan_parsed(void *parsed_result,
> +     __attribute__((unused)) struct cmdline *cl,
> +     __attribute__((unused)) void *data)
> +{
> +     struct cmd_set_vxlan_result *res = parsed_result;
> +     union {
> +             uint32_t vxlan_id;
> +             uint8_t vni[4];
> +     } id = {
> +             .vxlan_id = rte_cpu_to_be_32(res->vni) &
> RTE_BE32(0x00ffffff),
> +     };
> +
> +     if (strcmp(res->vxlan, "vxlan") == 0)
> +             vxlan_encap_conf.select_vlan = 0;
> +     else if (strcmp(res->vxlan, "vxlan-with-vlan") == 0)
> +             vxlan_encap_conf.select_vlan = 1;
> +     if (strcmp(res->ip_version, "ipv4") == 0)
> +             vxlan_encap_conf.select_ipv4 = 1;
> +     else if (strcmp(res->ip_version, "ipv6") == 0)
> +             vxlan_encap_conf.select_ipv4 = 0;
> +     else
> +             return;
> +     rte_memcpy(vxlan_encap_conf.vni, &id.vni[1], 3);
> +     vxlan_encap_conf.udp_src = rte_cpu_to_be_16(res->udp_src);
> +     vxlan_encap_conf.udp_dst = rte_cpu_to_be_16(res->udp_dst);
> +     if (vxlan_encap_conf.select_ipv4) {
> +             IPV4_ADDR_TO_UINT(res->ip_src,
> vxlan_encap_conf.ipv4_src);
> +             IPV4_ADDR_TO_UINT(res->ip_dst,
> vxlan_encap_conf.ipv4_dst);
> +     } else {
> +             IPV6_ADDR_TO_ARRAY(res->ip_src,
> vxlan_encap_conf.ipv6_src);
> +             IPV6_ADDR_TO_ARRAY(res->ip_dst,
> vxlan_encap_conf.ipv6_dst);
> +     }
> +     if (vxlan_encap_conf.select_vlan)
> +             vxlan_encap_conf.vlan_tci = rte_cpu_to_be_16(res->tci);
> +     rte_memcpy(vxlan_encap_conf.eth_src, res->eth_src.addr_bytes,
> +                ETHER_ADDR_LEN);
> +     rte_memcpy(vxlan_encap_conf.eth_dst, res->eth_dst.addr_bytes,
> +                ETHER_ADDR_LEN);
> +}
> +
> +cmdline_parse_inst_t cmd_set_vxlan = {
> +     .f = cmd_set_vxlan_parsed,
> +     .data = NULL,
> +     .help_str = "set vxlan ipv4|ipv6 <vni> <udp-src> <udp-dst> <ip-src>"
> +             " <ip-dst> <eth-src> <eth-dst>",
> +     .tokens = {
> +             (void *)&cmd_set_vxlan_set,
> +             (void *)&cmd_set_vxlan_vxlan,
> +             (void *)&cmd_set_vxlan_ip_version,
> +             (void *)&cmd_set_vxlan_vni,
> +             (void *)&cmd_set_vxlan_udp_src,
> +             (void *)&cmd_set_vxlan_udp_dst,
> +             (void *)&cmd_set_vxlan_ip_src,
> +             (void *)&cmd_set_vxlan_ip_dst,
> +             (void *)&cmd_set_vxlan_eth_src,
> +             (void *)&cmd_set_vxlan_eth_dst,
> +             NULL,
> +     },
> +};
> +
> +cmdline_parse_inst_t cmd_set_vxlan_with_vlan = {
> +     .f = cmd_set_vxlan_parsed,
> +     .data = NULL,
> +     .help_str = "set vxlan-with-vlan ipv4|ipv6 <vni> <udp-src> <udp-
> dst>"
> +             " <ip-src> <ip-dst> <vlan-tci> <eth-src> <eth-dst>",
> +     .tokens = {
> +             (void *)&cmd_set_vxlan_set,
> +             (void *)&cmd_set_vxlan_vxlan_with_vlan,
> +             (void *)&cmd_set_vxlan_ip_version,
> +             (void *)&cmd_set_vxlan_vni,
> +             (void *)&cmd_set_vxlan_udp_src,
> +             (void *)&cmd_set_vxlan_udp_dst,
> +             (void *)&cmd_set_vxlan_ip_src,
> +             (void *)&cmd_set_vxlan_ip_dst,
> +             (void *)&cmd_set_vxlan_vlan,
> +             (void *)&cmd_set_vxlan_eth_src,
> +             (void *)&cmd_set_vxlan_eth_dst,
> +             NULL,
> +     },
> +};
> +
>  /* Strict link priority scheduling mode setting */
>  static void
>  cmd_strict_link_prio_parsed(
> @@ -17462,6 +17594,8 @@ cmdline_parse_ctx_t main_ctx[] = {
>  #if defined RTE_LIBRTE_PMD_SOFTNIC && defined RTE_LIBRTE_SCHED
>       (cmdline_parse_inst_t *)&cmd_set_port_tm_hierarchy_default,
>  #endif
> +     (cmdline_parse_inst_t *)&cmd_set_vxlan,
> +     (cmdline_parse_inst_t *)&cmd_set_vxlan_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 934cf7e90..7823addb7 100644
> --- a/app/test-pmd/cmdline_flow.c
> +++ b/app/test-pmd/cmdline_flow.c
> @@ -239,6 +239,8 @@ enum index {
>       ACTION_OF_POP_MPLS_ETHERTYPE,
>       ACTION_OF_PUSH_MPLS,
>       ACTION_OF_PUSH_MPLS_ETHERTYPE,
> +     ACTION_VXLAN_ENCAP,
> +     ACTION_VXLAN_DECAP,
>  };
> 
>  /** Maximum size for pattern in struct rte_flow_item_raw. */
> @@ -258,6 +260,23 @@ struct action_rss_data {
>       uint16_t queue[ACTION_RSS_QUEUE_NUM];
>  };
> 
> +/** Maximum number of items in struct rte_flow_action_vxlan_encap. */
> +#define ACTION_VXLAN_ENCAP_ITEMS_NUM 6
> +
> +/** Storage for struct rte_flow_action_vxlan_encap including external data.
> */
> +struct action_vxlan_encap_data {
> +     struct rte_flow_action_vxlan_encap conf;
> +     struct rte_flow_item items[ACTION_VXLAN_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_udp item_udp;
> +     struct rte_flow_item_vxlan item_vxlan;
> +};
> +
>  /** Maximum number of subsequent tokens and arguments on the stack.
> */
>  #define CTX_STACK_SIZE 16
> 
> @@ -775,6 +794,8 @@ static const enum index next_action[] = {
>       ACTION_OF_SET_VLAN_PCP,
>       ACTION_OF_POP_MPLS,
>       ACTION_OF_PUSH_MPLS,
> +     ACTION_VXLAN_ENCAP,
> +     ACTION_VXLAN_DECAP,
>       ZERO,
>  };
> 
> @@ -905,6 +926,9 @@ static int parse_vc_action_rss_type(struct context *,
> const struct token *,
>  static int parse_vc_action_rss_queue(struct context *, const struct token *,
>                                    const char *, unsigned int, void *,
>                                    unsigned int);
> +static int parse_vc_action_vxlan_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);
> @@ -2387,6 +2411,24 @@ static const struct token token_list[] = {
>                             ethertype)),
>               .call = parse_vc_conf,
>       },
> +     [ACTION_VXLAN_ENCAP] = {
> +             .name = "vxlan_encap",
> +             .help = "VXLAN encapsulation, uses configuration set by
> \"set"
> +                     " vxlan\"",
> +             .priv = PRIV_ACTION(VXLAN_ENCAP,
> +                                 sizeof(struct action_vxlan_encap_data)),
> +             .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
> +             .call = parse_vc_action_vxlan_encap,
> +     },
> +     [ACTION_VXLAN_DECAP] = {
> +             .name = "vxlan_decap",
> +             .help = "Performs a decapsulation action by stripping all"
> +                     " headers of the VXLAN tunnel network overlay from
> the"
> +                     " matched flow.",
> +             .priv = PRIV_ACTION(VXLAN_DECAP, 0),
> +             .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
> +             .call = parse_vc,
> +     },
>  };
> 
>  /** Remove and return last entry from argument stack. */
> @@ -2951,6 +2993,103 @@ parse_vc_action_rss_queue(struct context *ctx,
> const struct token *token,
>       return len;
>  }
> 
> +/** Parse VXLAN encap action. */
> +static int
> +parse_vc_action_vxlan_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_vxlan_encap_data *action_vxlan_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_vxlan_encap_data = ctx->object;
> +     *action_vxlan_encap_data = (struct action_vxlan_encap_data){
> +             .conf = (struct rte_flow_action_vxlan_encap){
> +                     .definition = action_vxlan_encap_data->items,
> +             },
> +             .items = {
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_ETH,
> +                             .spec = &action_vxlan_encap_data-
> >item_eth,
> +                             .mask = &rte_flow_item_eth_mask,
> +                     },
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_VLAN,
> +                             .spec = &action_vxlan_encap_data-
> >item_vlan,
> +                             .mask = &rte_flow_item_vlan_mask,
> +                     },
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_IPV4,
> +                             .spec = &action_vxlan_encap_data-
> >item_ipv4,
> +                             .mask = &rte_flow_item_ipv4_mask,
> +                     },
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_UDP,
> +                             .spec = &action_vxlan_encap_data-
> >item_udp,
> +                             .mask = &rte_flow_item_udp_mask,
> +                     },
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_VXLAN,
> +                             .spec = &action_vxlan_encap_data-
> >item_vxlan,
> +                             .mask = &rte_flow_item_vxlan_mask,
> +                     },
> +                     {
> +                             .type = RTE_FLOW_ITEM_TYPE_END,
> +                     },
> +             },
> +             .item_eth.type = 0,
> +             .item_vlan.tci = vxlan_encap_conf.vlan_tci,
> +             .item_ipv4.hdr = {
> +                     .src_addr = vxlan_encap_conf.ipv4_src,
> +                     .dst_addr = vxlan_encap_conf.ipv4_dst,
> +             },
> +             .item_udp.hdr = {
> +                     .src_port = vxlan_encap_conf.udp_src,
> +                     .dst_port = vxlan_encap_conf.udp_dst,
> +             },
> +             .item_vxlan.flags = 0,
> +     };
> +     memcpy(action_vxlan_encap_data->item_eth.dst.addr_bytes,
> +            vxlan_encap_conf.eth_dst, ETHER_ADDR_LEN);
> +     memcpy(action_vxlan_encap_data->item_eth.src.addr_bytes,
> +            vxlan_encap_conf.eth_src, ETHER_ADDR_LEN);
> +     if (!vxlan_encap_conf.select_ipv4) {
> +             memcpy(&action_vxlan_encap_data-
> >item_ipv6.hdr.src_addr,
> +                    &vxlan_encap_conf.ipv6_src,
> +                    sizeof(vxlan_encap_conf.ipv6_src));
> +             memcpy(&action_vxlan_encap_data-
> >item_ipv6.hdr.dst_addr,
> +                    &vxlan_encap_conf.ipv6_dst,
> +                    sizeof(vxlan_encap_conf.ipv6_dst));
> +             action_vxlan_encap_data->items[2] = (struct
> rte_flow_item){
> +                     .type = RTE_FLOW_ITEM_TYPE_IPV6,
> +                     .spec = &action_vxlan_encap_data->item_ipv6,
> +                     .mask = &rte_flow_item_ipv6_mask,
> +             };
> +     }
> +     if (!vxlan_encap_conf.select_vlan)
> +             action_vxlan_encap_data->items[1].type =
> +                     RTE_FLOW_ITEM_TYPE_VOID;
> +     memcpy(action_vxlan_encap_data->item_vxlan.vni,
> vxlan_encap_conf.vni,
> +            RTE_DIM(vxlan_encap_conf.vni));
> +     action->conf = &action_vxlan_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 24c199844..5f581c360 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -393,6 +393,23 @@ uint8_t bitrate_enabled;
>  struct gro_status gro_ports[RTE_MAX_ETHPORTS];
>  uint8_t gro_flush_cycles = GRO_DEFAULT_FLUSH_CYCLES;
> 
> +struct vxlan_encap_conf vxlan_encap_conf = {
> +     .select_ipv4 = 1,
> +     .select_vlan = 0,
> +     .vni = "\x00\x00\x00",
> +     .udp_src = 0,
> +     .udp_dst = RTE_BE16(4789),
> +     .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 f51cd9dd9..0d6618788 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -479,6 +479,23 @@ struct gso_status {
>  extern struct gso_status gso_ports[RTE_MAX_ETHPORTS];
>  extern uint16_t gso_max_segment_size;
> 
> +/* VXLAN encap/decap parameters. */
> +struct vxlan_encap_conf {
> +     uint32_t select_ipv4:1;
> +     uint32_t select_vlan:1;
> +     uint8_t vni[3];
> +     rte_be16_t udp_src;
> +     rte_be16_t udp_dst;
> +     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 vxlan_encap_conf vxlan_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 0d6fd50ca..2743043d3 100644
> --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> @@ -1534,6 +1534,13 @@ Enable or disable a per queue Tx offloading only
> on a specific Tx queue::
> 
>  This command should be run when the port is stopped, or else it will fail.
> 
> +Config VXLAN Encap outer layers
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +Configure the outer layer to encapsulate a packet inside a VXLAN tunnel::
> +
> + testpmd> set vxlan ipv4|ipv6 (vni) (udp-src) (udp-dst) (ip-src) (ip-dst)
> (mac-src) (mac-dst)
> + testpmd> set vxlan-with-vlan ipv4|ipv6 (vni) (udp-src) (udp-dst) (ip-src)
> (ip-dst) (vlan-tci) (mac-src) (mac-dst)
> 
>  Port Functions
>  --------------
> @@ -3650,6 +3657,12 @@ This section lists supported actions and their
> attributes, if any.
> 
>    - ``ethertype``: Ethertype.
> 
> +- ``vxlan_encap``: Performs a VXLAN encapsulation, outer layer
> configuration
> +  is done through `Config VXLAN Encap outer layers`_.
> +
> +- ``vxlan_decap``: Performs a decapsulation action by stripping all headers 
> of
> +  the VXLAN tunnel network overlay from the matched flow.
> +
>  Destroying flow rules
>  ~~~~~~~~~~~~~~~~~~~~~
> 
> @@ -3915,6 +3928,28 @@ Validate and create a QinQ rule on port 0 to steer
> traffic to a queue on the hos
>     0       0       0       i-      ETH VLAN VLAN=>VF QUEUE
>     1       0       0       i-      ETH VLAN VLAN=>PF QUEUE
> 
> +Sample VXLAN encapsulation rule
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +VXLAN encapsulation outer layer has default value pre-configured in
> testpmd
> +source code, those can be changed by using the following commands::
> +
> +IPv4 VXLAN outer header::
> +
> +  testpmd> set vxlan ipv4 4 4 4 127.0.0.1 128.0.0.1 11:11:11:11:11:11
> 22:22:22:22:22:22
> +  testpmd> flow create 0 ingress pattern end actions vxlan_encap / queue
> index 0 / end
> +
> +  testpmd> set vxlan-with-vlan ipv4 4 4 4 127.0.0.1 128.0.0.1 34
> 11:11:11:11:11:11 22:22:22:22:22:22
> +  testpmd> flow create 0 ingress pattern end actions vxlan_encap / queue
> index 0 / end
> +
> +IPv6 VXLAN outer header::
> +
> +  testpmd> set vxlan ipv6 4 4 4 ::1 ::2222 11:11:11:11:11:11 
> 22:22:22:22:22:22
> +  testpmd> flow create 0 ingress pattern end actions vxlan_encap / queue
> index 0 / end
> +
> +  testpmd> set vxlan-with-vlan ipv6 4 4 4 ::1 ::2222 34 11:11:11:11:11:11
> 22:22:22:22:22:22
> +  testpmd> flow create 0 ingress pattern end actions vxlan_encap / queue
> index 0 / end
> +
>  BPF Functions
>  --------------
> 
> --
> 2.18.0.rc2

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