lib/flow: add dp_hash and recirc_id to struct flow

[sliver-openvswitch.git] / lib / flow.c

diff --git a/lib/flow.c b/lib/flow.c
index c482474..f6ec135 100644 (file)
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -530,8 +530,10 @@ flow_unwildcard_tp_ports(const struct flow *flow, struct flow_wildcards *wc)
 void
 flow_get_metadata(const struct flow *flow, struct flow_metadata *fmd)
 {
-    BUILD_ASSERT_DECL(FLOW_WC_SEQ == 24);
+    BUILD_ASSERT_DECL(FLOW_WC_SEQ == 25);
 
+    fmd->dp_hash = flow->dp_hash;
+    fmd->recirc_id = flow->recirc_id;
     fmd->tun_id = flow->tunnel.tun_id;
     fmd->tun_src = flow->tunnel.ip_src;
     fmd->tun_dst = flow->tunnel.ip_dst;
@@ -818,6 +820,25 @@ flow_wildcards_set_reg_mask(struct flow_wildcards *wc, int idx, uint32_t mask)
     wc->masks.regs[idx] = mask;
 }
 
+/* Calculates the 5-tuple hash from the given flow. */
+uint32_t
+flow_hash_5tuple(const struct flow *flow, uint32_t basis)
+{
+    uint32_t hash = 0;
+
+    if (!flow) {
+        return 0;
+    }
+
+    hash = mhash_add(basis, (OVS_FORCE uint32_t) flow->nw_src);
+    hash = mhash_add(hash, (OVS_FORCE uint32_t) flow->nw_dst);
+    hash = mhash_add(hash, ((OVS_FORCE uint32_t) flow->tp_src << 16)
+                           | (OVS_FORCE uint32_t) flow->tp_dst);
+    hash = mhash_add(hash, flow->nw_proto);
+
+    return mhash_finish(hash, 13);
+}
+
 /* Hashes 'flow' based on its L2 through L4 protocol information. */
 uint32_t
 flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis)
@@ -1175,7 +1196,7 @@ flow_push_mpls(struct flow *flow, int n, ovs_be16 mpls_eth_type,
         flow->mpls_lse[0] = set_mpls_lse_values(ttl, tc, 1, htonl(label));
 
         /* Clear all L3 and L4 fields. */
-        BUILD_ASSERT(FLOW_WC_SEQ == 24);
+        BUILD_ASSERT(FLOW_WC_SEQ == 25);
         memset((char *) flow + FLOW_SEGMENT_2_ENDS_AT, 0,
                sizeof(struct flow) - FLOW_SEGMENT_2_ENDS_AT);
     }