ofpbuf: Abstract 'l2' pointer and document usage conventions.
[sliver-openvswitch.git] / lib / cfm.c
index ff46019..ce0c471 100644 (file)
--- a/lib/cfm.c
+++ b/lib/cfm.c
@@ -285,7 +285,7 @@ ms_to_ccm_interval(int interval_ms)
 static uint32_t
 hash_mpid(uint64_t mpid)
 {
-    return hash_bytes(&mpid, sizeof mpid, 0);
+    return hash_uint64(mpid);
 }
 
 static bool
@@ -557,7 +557,7 @@ cfm_compose_ccm(struct cfm *cfm, struct ofpbuf *packet,
         eth_push_vlan(packet, htons(ETH_TYPE_VLAN), htons(tci));
     }
 
-    ccm = packet->l3;
+    ccm = ofpbuf_l3(packet);
     ccm->mdlevel_version = 0;
     ccm->opcode = CCM_OPCODE;
     ccm->tlv_offset = 70;
@@ -718,8 +718,9 @@ cfm_process_heartbeat(struct cfm *cfm, const struct ofpbuf *p)
 
     ovs_mutex_lock(&mutex);
 
-    eth = p->l2;
-    ccm = ofpbuf_at(p, (uint8_t *)p->l3 - (uint8_t *)p->data, CCM_ACCEPT_LEN);
+    eth = ofpbuf_l2(p);
+    ccm = ofpbuf_at(p, (uint8_t *)ofpbuf_l3(p) - (uint8_t *)ofpbuf_data(p),
+                    CCM_ACCEPT_LEN);
 
     if (!ccm) {
         VLOG_INFO_RL(&rl, "%s: Received an unparseable 802.1ag CCM heartbeat.",