[NETFILTER]: nf_conntrack_sip: add missing message types containing RTP info

Signed-off-by: NJerome Borsboom <j.borsboom@erasmusmc.nl>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/netfilter/nf_conntrack_sip.c

@@ -442,6 +442,9 @@ static int sip_help(struct sk_buff **pskb,
 
 	/* RTP info only in some SDP pkts */
 	if (memcmp(dptr, "INVITE", sizeof("INVITE") - 1) != 0 &&
+	    memcmp(dptr, "UPDATE", sizeof("UPDATE") - 1) != 0 &&
+	    memcmp(dptr, "SIP/2.0 180", sizeof("SIP/2.0 180") - 1) != 0 &&
+	    memcmp(dptr, "SIP/2.0 183", sizeof("SIP/2.0 183") - 1) != 0 &&
 	    memcmp(dptr, "SIP/2.0 200", sizeof("SIP/2.0 200") - 1) != 0) {
 		goto out;
 	}