netdev-offload-dpdk: Support offload of set TCP/UDP ports actions.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

Documentation/howto/dpdk.rst

@@ -394,6 +394,7 @@ Supported actions for hardware offload are:
 - Drop.
 - Modification of Ethernet (mod_dl_src/mod_dl_dst).
 - Modification of IPv4 (mod_nw_src/mod_nw_dst/mod_nw_ttl).
+- Modification of TCP/UDP (mod_tp_src/mod_tp_dst).
 
 Further Reading
 ---------------

NEWS

@@ -34,8 +34,8 @@ Post-v2.12.0
        interval is increased to 60 seconds for the connection to the
        replication server. This value is configurable with the unixctl
        command - ovsdb-server/set-active-ovsdb-server-probe-interval.
-     * Add hardware offload support for output, drop and set actions of
+     * Add hardware offload support for output, drop, set of MAC, IPv4 and
-       MAC and IPv4 (experimental).
+       TCP/UDP ports actions (experimental).
    - 'ovs-appctl dpctl/dump-flows' can now show offloaded=partial for
      partially offloaded flows, dp:dpdk for fully offloaded by dpdk, and
      type filter supports new filters: "dpdk" and "partially-offloaded".

lib/netdev-offload-dpdk.c

@@ -407,6 +407,19 @@ dump_flow_action(struct ds *s, const struct rte_flow_action *actions)
         } else {
             ds_put_cstr(s, "  Set-ttl = null\n");
         }
+    } else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_SRC ||
+               actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_DST) {
+        const struct rte_flow_action_set_tp *set_tp = actions->conf;
+        char *dirstr = actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_DST
+                       ? "dst" : "src";
+
+        ds_put_format(s, "rte flow set-tcp/udp-port-%s action:\n", dirstr);
+        if (set_tp) {
+            ds_put_format(s, "  Set-%s-tcp/udp-port: %"PRIu16"\n", dirstr,
+                          ntohs(set_tp->port));
+        } else {
+            ds_put_format(s, "  Set-%s-tcp/udp-port = null\n", dirstr);
+        }
     } else {
         ds_put_format(s, "unknown rte flow action (%d)\n", actions->type);
     }
@@ -876,6 +889,14 @@ BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ipv4) ==
                   MEMBER_SIZEOF(struct ovs_key_ipv4, ipv4_dst));
 BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ttl) ==
                   MEMBER_SIZEOF(struct ovs_key_ipv4, ipv4_ttl));
+BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
+                  MEMBER_SIZEOF(struct ovs_key_tcp, tcp_src));
+BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
+                  MEMBER_SIZEOF(struct ovs_key_tcp, tcp_dst));
+BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
+                  MEMBER_SIZEOF(struct ovs_key_udp, udp_src));
+BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
+                  MEMBER_SIZEOF(struct ovs_key_udp, udp_dst));
 
 static int
 parse_set_actions(struct flow_actions *actions,
@@ -917,6 +938,28 @@ parse_set_actions(struct flow_actions *actions,
                 VLOG_DBG_RL(&rl, "Unsupported IPv4 set action");
                 return -1;
             }
+        } else if (nl_attr_type(sa) == OVS_KEY_ATTR_TCP) {
+            const struct ovs_key_tcp *key = nl_attr_get(sa);
+            const struct ovs_key_tcp *mask = masked ? key + 1 : NULL;
+
+            add_set_flow_action(tcp_src, RTE_FLOW_ACTION_TYPE_SET_TP_SRC);
+            add_set_flow_action(tcp_dst, RTE_FLOW_ACTION_TYPE_SET_TP_DST);
+
+            if (mask && !is_all_zeros(mask, sizeof *mask)) {
+                VLOG_DBG_RL(&rl, "Unsupported TCP set action");
+                return -1;
+            }
+        } else if (nl_attr_type(sa) == OVS_KEY_ATTR_UDP) {
+            const struct ovs_key_udp *key = nl_attr_get(sa);
+            const struct ovs_key_udp *mask = masked ? key + 1 : NULL;
+
+            add_set_flow_action(udp_src, RTE_FLOW_ACTION_TYPE_SET_TP_SRC);
+            add_set_flow_action(udp_dst, RTE_FLOW_ACTION_TYPE_SET_TP_DST);
+
+            if (mask && !is_all_zeros(mask, sizeof *mask)) {
+                VLOG_DBG_RL(&rl, "Unsupported UDP set action");
+                return -1;
+            }
         } else {
             VLOG_DBG_RL(&rl,
                         "Unsupported set action type %d", nl_attr_type(sa));