ofpbuf: Introduce access api for base, data and size.

These functions will be used by later patches.  Following patch
does not change functionality.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/cfm.c b/lib/cfm.c
index dcdaa0ea6..420a57f10 100644
--- a/lib/cfm.c
+++ b/lib/cfm.c
@@ -719,7 +719,7 @@ cfm_process_heartbeat(struct cfm *cfm, const struct ofpbuf *p)
     ovs_mutex_lock(&mutex);
 
     eth = p->l2;
-    ccm = ofpbuf_at(p, (uint8_t *)ofpbuf_get_l3(p) - (uint8_t *)p->data,
+    ccm = ofpbuf_at(p, (uint8_t *)ofpbuf_get_l3(p) - (uint8_t *)ofpbuf_data(p),
                     CCM_ACCEPT_LEN);
 
     if (!ccm) {