abisip-find: use protocol constant
Use library define instead of directly using hardcoded value.
Change-Id: Ie9b8bc55bf40cf005434f27e205d47ffab959413
diff --git a/openbsc/src/ipaccess/abisip-find.c b/openbsc/src/ipaccess/abisip-find.c
index 87c6e50..9fe7df6 100644
--- a/openbsc/src/ipaccess/abisip-find.c
+++ b/openbsc/src/ipaccess/abisip-find.c
@@ -138,8 +138,8 @@
if (len < 0)
return len;
- /* 2 bytes length, 1 byte protocol (0xfe) */
- if (buf[2] != 0xfe)
+ /* 2 bytes length, 1 byte protocol */
+ if (buf[2] != IPAC_PROTO_IPACCESS)
return 0;
if (buf[4] != IPAC_MSGT_ID_RESP)