app/flow-perf: support raw encap/decap actions

Introduce raw-encap and raw-decap actions.
The two actions are added in command line
options, and for the data to encap or decap
the user need to parse it within the command
line.

All values of raw-encap data is set to be fixed
values.

Usage example:

--raw-encap=ether,ipv4,udp,vxlan

Signed-off-by: Wisam Jaddo <wisamm@mellanox.com>
Acked-by: Alexander Kozyrev <akozyrev@nvidia.com>

diff --git a/app/test-flow-perf/actions_gen.c b/app/test-flow-perf/actions_gen.c
index 99e47bf786d784e67a161c3ad69a74689e87eabb..3ae6059fb1790e9eba44f410879e50543bfec3ed 100644 (file)
--- a/app/test-flow-perf/actions_gen.c
+++ b/app/test-flow-perf/actions_gen.c
@@ -10,6 +10,8 @@
 #include <rte_malloc.h>
 #include <rte_flow.h>
 #include <rte_ethdev.h>
+#include <rte_vxlan.h>
+#include <rte_gtp.h>
 
 #include "actions_gen.h"
 #include "flow_gen.h"
@@ -22,6 +24,23 @@ struct additional_para {
        uint16_t *queues;
        uint16_t queues_number;
        uint32_t counter;
+       uint64_t encap_data;
+       uint64_t decap_data;
+};
+
+/* Storage for struct rte_flow_action_raw_encap including external data. */
+struct action_raw_encap_data {
+       struct rte_flow_action_raw_encap conf;
+       uint8_t data[128];
+       uint8_t preserve[128];
+       uint16_t idx;
+};
+
+/* Storage for struct rte_flow_action_raw_decap including external data. */
+struct action_raw_decap_data {
+       struct rte_flow_action_raw_decap conf;
+       uint8_t data[128];
+       uint16_t idx;
 };
 
 /* Storage for struct rte_flow_action_rss including external data. */
@@ -437,9 +456,304 @@ add_flag(struct rte_flow_action *actions,
        actions[actions_counter].type = RTE_FLOW_ACTION_TYPE_FLAG;
 }
 
+static void
+add_ether_header(uint8_t **header, uint64_t data,
+       __rte_unused struct additional_para para)
+{
+       struct rte_flow_item_eth eth_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_ETH)))
+               return;
+
+       memset(&eth_item, 0, sizeof(struct rte_flow_item_eth));
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VLAN))
+               eth_item.type = RTE_BE16(RTE_ETHER_TYPE_VLAN);
+       else if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV4))
+               eth_item.type = RTE_BE16(RTE_ETHER_TYPE_IPV4);
+       else if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV6))
+               eth_item.type = RTE_BE16(RTE_ETHER_TYPE_IPV6);
+       memcpy(*header, &eth_item, sizeof(eth_item));
+       *header += sizeof(eth_item);
+}
+
+static void
+add_vlan_header(uint8_t **header, uint64_t data,
+       __rte_unused struct additional_para para)
+{
+       struct rte_flow_item_vlan vlan_item;
+       uint16_t vlan_value;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VLAN)))
+               return;
+
+       vlan_value = VLAN_VALUE;
+
+       memset(&vlan_item, 0, sizeof(struct rte_flow_item_vlan));
+       vlan_item.tci = RTE_BE16(vlan_value);
+
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV4))
+               vlan_item.inner_type = RTE_BE16(RTE_ETHER_TYPE_IPV4);
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV6))
+               vlan_item.inner_type = RTE_BE16(RTE_ETHER_TYPE_IPV6);
+       memcpy(*header, &vlan_item, sizeof(vlan_item));
+       *header += sizeof(vlan_item);
+}
+
+static void
+add_ipv4_header(uint8_t **header, uint64_t data,
+       struct additional_para para)
+{
+       struct rte_flow_item_ipv4 ipv4_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV4)))
+               return;
+
+       memset(&ipv4_item, 0, sizeof(struct rte_flow_item_ipv4));
+       ipv4_item.hdr.src_addr = RTE_IPV4(127, 0, 0, 1);
+       ipv4_item.hdr.dst_addr = RTE_BE32(para.counter);
+       ipv4_item.hdr.version_ihl = RTE_IPV4_VHL_DEF;
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_UDP))
+               ipv4_item.hdr.next_proto_id = RTE_IP_TYPE_UDP;
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GRE))
+               ipv4_item.hdr.next_proto_id = RTE_IP_TYPE_GRE;
+       memcpy(*header, &ipv4_item, sizeof(ipv4_item));
+       *header += sizeof(ipv4_item);
+}
+
+static void
+add_ipv6_header(uint8_t **header, uint64_t data,
+       __rte_unused struct additional_para para)
+{
+       struct rte_flow_item_ipv6 ipv6_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_IPV6)))
+               return;
+
+       memset(&ipv6_item, 0, sizeof(struct rte_flow_item_ipv6));
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_UDP))
+               ipv6_item.hdr.proto = RTE_IP_TYPE_UDP;
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GRE))
+               ipv6_item.hdr.proto = RTE_IP_TYPE_GRE;
+       memcpy(*header, &ipv6_item, sizeof(ipv6_item));
+       *header += sizeof(ipv6_item);
+}
+
+static void
+add_udp_header(uint8_t **header, uint64_t data,
+       __rte_unused struct additional_para para)
+{
+       struct rte_flow_item_udp udp_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_UDP)))
+               return;
+
+       memset(&udp_item, 0, sizeof(struct rte_flow_item_udp));
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VXLAN))
+               udp_item.hdr.dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT);
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VXLAN_GPE))
+               udp_item.hdr.dst_port = RTE_BE16(RTE_VXLAN_GPE_UDP_PORT);
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GENEVE))
+               udp_item.hdr.dst_port = RTE_BE16(RTE_GENEVE_UDP_PORT);
+       if (data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GTP))
+               udp_item.hdr.dst_port = RTE_BE16(RTE_GTPU_UDP_PORT);
+        memcpy(*header, &udp_item, sizeof(udp_item));
+        *header += sizeof(udp_item);
+}
+
+static void
+add_vxlan_header(uint8_t **header, uint64_t data,
+       struct additional_para para)
+{
+       struct rte_flow_item_vxlan vxlan_item;
+       uint32_t vni_value = para.counter;
+       uint8_t i;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VXLAN)))
+               return;
+
+       memset(&vxlan_item, 0, sizeof(struct rte_flow_item_vxlan));
+
+       for (i = 0; i < 3; i++)
+               vxlan_item.vni[2 - i] = vni_value >> (i * 8);
+       vxlan_item.flags = 0x8;
+
+       memcpy(*header, &vxlan_item, sizeof(vxlan_item));
+       *header += sizeof(vxlan_item);
+}
+
+static void
+add_vxlan_gpe_header(uint8_t **header, uint64_t data,
+       struct additional_para para)
+{
+       struct rte_flow_item_vxlan_gpe vxlan_gpe_item;
+       uint32_t vni_value = para.counter;
+       uint8_t i;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_VXLAN_GPE)))
+               return;
+
+       memset(&vxlan_gpe_item, 0, sizeof(struct rte_flow_item_vxlan_gpe));
+
+       for (i = 0; i < 3; i++)
+               vxlan_gpe_item.vni[2 - i] = vni_value >> (i * 8);
+       vxlan_gpe_item.flags = 0x0c;
+
+       memcpy(*header, &vxlan_gpe_item, sizeof(vxlan_gpe_item));
+       *header += sizeof(vxlan_gpe_item);
+}
+
+static void
+add_gre_header(uint8_t **header, uint64_t data,
+       __rte_unused struct additional_para para)
+{
+       struct rte_flow_item_gre gre_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GRE)))
+               return;
+
+       memset(&gre_item, 0, sizeof(struct rte_flow_item_gre));
+
+       gre_item.protocol = RTE_BE16(RTE_ETHER_TYPE_TEB);
+
+       memcpy(*header, &gre_item, sizeof(gre_item));
+       *header += sizeof(gre_item);
+}
+
+static void
+add_geneve_header(uint8_t **header, uint64_t data,
+       struct additional_para para)
+{
+       struct rte_flow_item_geneve geneve_item;
+       uint32_t vni_value = para.counter;
+       uint8_t i;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GENEVE)))
+               return;
+
+       memset(&geneve_item, 0, sizeof(struct rte_flow_item_geneve));
+
+       for (i = 0; i < 3; i++)
+               geneve_item.vni[2 - i] = vni_value >> (i * 8);
+
+       memcpy(*header, &geneve_item, sizeof(geneve_item));
+       *header += sizeof(geneve_item);
+}
+
+static void
+add_gtp_header(uint8_t **header, uint64_t data,
+       struct additional_para para)
+{
+       struct rte_flow_item_gtp gtp_item;
+
+       if (!(data & FLOW_ITEM_MASK(RTE_FLOW_ITEM_TYPE_GTP)))
+               return;
+
+       memset(&gtp_item, 0, sizeof(struct rte_flow_item_gtp));
+
+       gtp_item.teid = RTE_BE32(para.counter);
+       gtp_item.msg_type = 255;
+
+       memcpy(*header, &gtp_item, sizeof(gtp_item));
+       *header += sizeof(gtp_item);
+}
+
+static const struct encap_decap_headers {
+       void (*funct)(
+               uint8_t **header,
+               uint64_t data,
+               struct additional_para para
+               );
+} headers[] = {
+       {.funct = add_ether_header},
+       {.funct = add_vlan_header},
+       {.funct = add_ipv4_header},
+       {.funct = add_ipv6_header},
+       {.funct = add_udp_header},
+       {.funct = add_vxlan_header},
+       {.funct = add_vxlan_gpe_header},
+       {.funct = add_gre_header},
+       {.funct = add_geneve_header},
+       {.funct = add_gtp_header},
+};
+
+static void
+add_raw_encap(struct rte_flow_action *actions,
+       uint8_t actions_counter,
+       struct additional_para para)
+{
+       static struct action_raw_encap_data *action_encap_data;
+       uint64_t encap_data = para.encap_data;
+       uint8_t *header;
+       uint8_t i;
+
+       /* Avoid double allocation. */
+       if (action_encap_data == NULL)
+               action_encap_data = rte_malloc("encap_data",
+                       sizeof(struct action_raw_encap_data), 0);
+
+       /* Check if allocation failed. */
+       if (action_encap_data == NULL)
+               rte_exit(EXIT_FAILURE, "No Memory available!");
+
+       *action_encap_data = (struct action_raw_encap_data) {
+               .conf = (struct rte_flow_action_raw_encap) {
+                       .data = action_encap_data->data,
+               },
+                       .data = {},
+       };
+       header = action_encap_data->data;
+
+       for (i = 0; i < RTE_DIM(headers); i++)
+               headers[i].funct(&header, encap_data, para);
+
+       action_encap_data->conf.size = header -
+               action_encap_data->data;
+
+       actions[actions_counter].type = RTE_FLOW_ACTION_TYPE_RAW_ENCAP;
+       actions[actions_counter].conf = &action_encap_data->conf;
+}
+
+static void
+add_raw_decap(struct rte_flow_action *actions,
+       uint8_t actions_counter,
+       struct additional_para para)
+{
+       static struct action_raw_decap_data *action_decap_data;
+       uint64_t decap_data = para.decap_data;
+       uint8_t *header;
+       uint8_t i;
+
+       /* Avoid double allocation. */
+       if (action_decap_data == NULL)
+               action_decap_data = rte_malloc("decap_data",
+                       sizeof(struct action_raw_decap_data), 0);
+
+       /* Check if allocation failed. */
+       if (action_decap_data == NULL)
+               rte_exit(EXIT_FAILURE, "No Memory available!");
+
+       *action_decap_data = (struct action_raw_decap_data) {
+               .conf = (struct rte_flow_action_raw_decap) {
+                       .data = action_decap_data->data,
+               },
+                       .data = {},
+       };
+       header = action_decap_data->data;
+
+       for (i = 0; i < RTE_DIM(headers); i++)
+               headers[i].funct(&header, decap_data, para);
+
+       action_decap_data->conf.size = header -
+               action_decap_data->data;
+
+       actions[actions_counter].type = RTE_FLOW_ACTION_TYPE_RAW_DECAP;
+       actions[actions_counter].conf = &action_decap_data->conf;
+}
+
 void
 fill_actions(struct rte_flow_action *actions, uint64_t *flow_actions,
-       uint32_t counter, uint16_t next_table, uint16_t hairpinq)
+       uint32_t counter, uint16_t next_table, uint16_t hairpinq,
+       uint64_t encap_data, uint64_t decap_data)
 {
        struct additional_para additional_para_data;
        uint8_t actions_counter = 0;
@@ -459,6 +773,8 @@ fill_actions(struct rte_flow_action *actions, uint64_t *flow_actions,
                .queues = queues,
                .queues_number = RXQ_NUM,
                .counter = counter,
+               .encap_data = encap_data,
+               .decap_data = decap_data,
        };
 
        if (hairpinq != 0) {
@@ -621,6 +937,18 @@ fill_actions(struct rte_flow_action *actions, uint64_t *flow_actions,
                        .mask = HAIRPIN_RSS_ACTION,
                        .funct = add_rss,
                },
+               {
+                       .mask = FLOW_ACTION_MASK(
+                               RTE_FLOW_ACTION_TYPE_RAW_ENCAP
+                       ),
+                       .funct = add_raw_encap,
+               },
+               {
+                       .mask = FLOW_ACTION_MASK(
+                               RTE_FLOW_ACTION_TYPE_RAW_DECAP
+                       ),
+                       .funct = add_raw_decap,
+               },
        };
 
        for (j = 0; j < MAX_ACTIONS_NUM; j++) {

diff --git a/app/test-flow-perf/actions_gen.h b/app/test-flow-perf/actions_gen.h
index d6918a53a67fcc92132b974109e908cc6a6da771..85e3176b09e76bbb785f480fdff0af481b19cdbd 100644 (file)
--- a/app/test-flow-perf/actions_gen.h
+++ b/app/test-flow-perf/actions_gen.h
@@ -12,7 +12,13 @@
 
 #include "config.h"
 
+#define RTE_IP_TYPE_UDP        17
+#define RTE_IP_TYPE_GRE        47
+#define RTE_VXLAN_GPE_UDP_PORT 250
+#define RTE_GENEVE_UDP_PORT 6081
+
 void fill_actions(struct rte_flow_action *actions, uint64_t *flow_actions,
-       uint32_t counter, uint16_t next_table, uint16_t hairpinq);
+       uint32_t counter, uint16_t next_table, uint16_t hairpinq,
+       uint64_t encap_data, uint64_t decap_data);
 
 #endif /* FLOW_PERF_ACTION_GEN */

diff --git a/app/test-flow-perf/flow_gen.c b/app/test-flow-perf/flow_gen.c
index b2c828c7df5b2ff4e416e1c9029196405ac56537..a979b3856d65c4f3480cd5f185569dfae09a3a8d 100644 (file)
--- a/app/test-flow-perf/flow_gen.c
+++ b/app/test-flow-perf/flow_gen.c
@@ -43,6 +43,8 @@ generate_flow(uint16_t port_id,
        uint16_t next_table,
        uint32_t outer_ip_src,
        uint16_t hairpinq,
+       uint64_t encap_data,
+       uint64_t decap_data,
        struct rte_flow_error *error)
 {
        struct rte_flow_attr attr;
@@ -57,7 +59,8 @@ generate_flow(uint16_t port_id,
        fill_attributes(&attr, flow_attrs, group);
 
        fill_actions(actions, flow_actions,
-               outer_ip_src, next_table, hairpinq);
+               outer_ip_src, next_table, hairpinq,
+               encap_data, decap_data);
 
        fill_items(items, flow_items, outer_ip_src);
 

diff --git a/app/test-flow-perf/flow_gen.h b/app/test-flow-perf/flow_gen.h
index 53469c659fbc72af560ae49b5669e44fe36e067f..3d13737d65c6123adb2b9818e818ef7395c46fb1 100644 (file)
--- a/app/test-flow-perf/flow_gen.h
+++ b/app/test-flow-perf/flow_gen.h
@@ -32,6 +32,8 @@ generate_flow(uint16_t port_id,
        uint16_t next_table,
        uint32_t outer_ip_src,
        uint16_t hairpinq,
+       uint64_t encap_data,
+       uint64_t decap_data,
        struct rte_flow_error *error);
 
 #endif /* FLOW_PERF_FLOW_GEN */

diff --git a/app/test-flow-perf/main.c b/app/test-flow-perf/main.c
index ae0d1a3be5d51eb553f14933d485ceef75645170..1b456e69220e4355a00cc41c4e698ba4b1989678 100644 (file)
--- a/app/test-flow-perf/main.c
+++ b/app/test-flow-perf/main.c
@@ -45,6 +45,9 @@
 struct rte_flow *flow;
 static uint8_t flow_group;
 
+static uint64_t encap_data;
+static uint64_t decap_data;
+
 static uint64_t flow_items[MAX_ITEMS_NUM];
 static uint64_t flow_actions[MAX_ACTIONS_NUM];
 static uint64_t flow_attrs[MAX_ATTRS_NUM];
@@ -171,12 +174,19 @@ usage(char *progname)
        printf("  --set-ipv6-dscp: add set ipv6 dscp action to flow actions\n"
                "ipv6 dscp value to be set is random each flow\n");
        printf("  --flag: add flag action to flow actions\n");
+       printf("  --raw-encap=<data>: add raw encap action to flow actions\n"
+               "Data is the data needed to be encaped\n"
+               "Example: raw-encap=ether,ipv4,udp,vxlan\n");
+       printf("  --raw-decap=<data>: add raw decap action to flow actions\n"
+               "Data is the data needed to be decaped\n"
+               "Example: raw-decap=ether,ipv4,udp,vxlan\n");
 }
 
 static void
 args_parse(int argc, char **argv)
 {
        char **argvopt;
+       char *token;
        int n, opt;
        int opt_idx;
        size_t i;
@@ -532,6 +542,8 @@ args_parse(int argc, char **argv)
                { "set-ipv4-dscp",              0, 0, 0 },
                { "set-ipv6-dscp",              0, 0, 0 },
                { "flag",                       0, 0, 0 },
+               { "raw-encap",                  1, 0, 0 },
+               { "raw-decap",                  1, 0, 0 },
        };
 
        hairpin_queues_num = 0;
@@ -593,6 +605,58 @@ args_parse(int argc, char **argv)
                                printf("hairpin-queue / ");
                        }
 
+                       if (strcmp(lgopts[opt_idx].name, "raw-encap") == 0) {
+                               printf("raw-encap ");
+                               flow_actions[actions_idx++] =
+                                       FLOW_ITEM_MASK(
+                                               RTE_FLOW_ACTION_TYPE_RAW_ENCAP
+                                       );
+
+                               token = strtok(optarg, ",");
+                               while (token != NULL) {
+                                       for (i = 0; i < RTE_DIM(flow_options); i++) {
+                                               if (strcmp(flow_options[i].str, token) == 0) {
+                                                       printf("%s,", token);
+                                                       encap_data |= flow_options[i].mask;
+                                                       break;
+                                               }
+                                               /* Reached last item with no match */
+                                               if (i == (RTE_DIM(flow_options) - 1)) {
+                                                       fprintf(stderr, "Invalid encap item: %s\n", token);
+                                                       usage(argv[0]);
+                                                       rte_exit(EXIT_SUCCESS, "Invalid encap item\n");
+                                               }
+                                       }
+                                       token = strtok(NULL, ",");
+                               }
+                               printf(" / ");
+                       }
+                       if (strcmp(lgopts[opt_idx].name, "raw-decap") == 0) {
+                               printf("raw-decap ");
+                               flow_actions[actions_idx++] =
+                                       FLOW_ITEM_MASK(
+                                               RTE_FLOW_ACTION_TYPE_RAW_DECAP
+                                       );
+
+                               token = strtok(optarg, ",");
+                               while (token != NULL) {
+                                       for (i = 0; i < RTE_DIM(flow_options); i++) {
+                                               if (strcmp(flow_options[i].str, token) == 0) {
+                                                       printf("%s,", token);
+                                                       encap_data |= flow_options[i].mask;
+                                                       break;
+                                               }
+                                               /* Reached last item with no match */
+                                               if (i == (RTE_DIM(flow_options) - 1)) {
+                                                       fprintf(stderr, "Invalid decap item: %s\n", token);
+                                                       usage(argv[0]);
+                                                       rte_exit(EXIT_SUCCESS, "Invalid decap item\n");
+                                               }
+                                       }
+                                       token = strtok(NULL, ",");
+                               }
+                               printf(" / ");
+                       }
                        /* Control */
                        if (strcmp(lgopts[opt_idx].name,
                                        "flows-count") == 0) {
@@ -807,7 +871,7 @@ flows_handler(void)
                         */
                        flow = generate_flow(port_id, 0, flow_attrs,
                                global_items, global_actions,
-                               flow_group, 0, 0, &error);
+                               flow_group, 0, 0, 0, 0, &error);
 
                        if (flow == NULL) {
                                print_flow_error(error);
@@ -823,7 +887,9 @@ flows_handler(void)
                        flow = generate_flow(port_id, flow_group,
                                flow_attrs, flow_items, flow_actions,
                                JUMP_ACTION_TABLE, i,
-                               hairpin_queues_num, &error);
+                               hairpin_queues_num,
+                               encap_data, decap_data,
+                               &error);
 
                        if (force_quit)
                                i = flows_count;

diff --git a/doc/guides/rel_notes/release_20_11.rst b/doc/guides/rel_notes/release_20_11.rst
index b3288cc88638c6ed382f6264a6abf40966e04911..88b73466ff5fbfec221cdb7152e128ae3c35f216 100644 (file)
--- a/doc/guides/rel_notes/release_20_11.rst
+++ b/doc/guides/rel_notes/release_20_11.rst
@@ -64,6 +64,7 @@ New Features
     items matching as well.
   * Added header modify actions.
   * Added flag action.
+  * Added raw encap/decap actions.
 
 
 Removed Items

diff --git a/doc/guides/tools/flow-perf.rst b/doc/guides/tools/flow-perf.rst
index 69cdd1b22296765069d7d8621542ea030c077711..10c0c422e41515760e68f173774f1dccb90d1992 100644 (file)
--- a/doc/guides/tools/flow-perf.rst
+++ b/doc/guides/tools/flow-perf.rst
@@ -306,3 +306,13 @@ Actions:
 
 *      ``--flag``
        Add flag action to all flows actions.
+
+*      ``--raw-encap=<DATA>``
+       Add raw encap action to all flows actions.
+       Data is the data needed to be encaped, with fixed values.
+       Example: raw-encap=ether,ipv4,udp,vxlan
+
+*      ``--raw-decap=<DATA>``
+       Add raw decap action to all flows actions.
+       Data is the data needed to be decaped, with fixed values.
+       Example: raw-decap=ether,ipv4,gre