From a81876e6efa68d561039de86d67b415525e4851d Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Tue, 25 Mar 2008 20:24:04 -0700
Subject: [PATCH] --- yaml --- r: 90356 b: refs/heads/master c:
 9467ee380ae881443bc259fbbac9992baf523e2d h: refs/heads/master v: v3

---
 [refs]                                 |  2 +-
 trunk/net/netfilter/nf_conntrack_sip.c | 52 ++++++++++++++++++++++++--
 2 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 2ac0449edda8..949bffad8da5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 595a8ecb5fa41295a7010678b60cb2f7ab15fe42
+refs/heads/master: 9467ee380ae881443bc259fbbac9992baf523e2d
diff --git a/trunk/net/netfilter/nf_conntrack_sip.c b/trunk/net/netfilter/nf_conntrack_sip.c
index 71f744ad7653..8e7e5b465ffb 100644
--- a/trunk/net/netfilter/nf_conntrack_sip.c
+++ b/trunk/net/netfilter/nf_conntrack_sip.c
@@ -17,6 +17,7 @@
 #include <linux/netfilter.h>
 
 #include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack_core.h>
 #include <net/netfilter/nf_conntrack_expect.h>
 #include <net/netfilter/nf_conntrack_helper.h>
 #include <linux/netfilter/nf_conntrack_sip.h>
@@ -533,6 +534,22 @@ int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
 }
 EXPORT_SYMBOL_GPL(ct_sip_get_sdp_header);
 
+static void flush_expectations(struct nf_conn *ct)
+{
+	struct nf_conn_help *help = nfct_help(ct);
+	struct nf_conntrack_expect *exp;
+	struct hlist_node *n, *next;
+
+	spin_lock_bh(&nf_conntrack_lock);
+	hlist_for_each_entry_safe(exp, n, next, &help->expectations, lnode) {
+		if (!del_timer(&exp->timeout))
+			continue;
+		nf_ct_unlink_expect(exp);
+		nf_ct_expect_put(exp);
+	}
+	spin_unlock_bh(&nf_conntrack_lock);
+}
+
 static int set_expected_rtp(struct sk_buff *skb,
 			    const char **dptr, unsigned int *datalen,
 			    union nf_inet_addr *addr, __be16 port)
@@ -606,32 +623,58 @@ static int process_invite_response(struct sk_buff *skb,
 				   const char **dptr, unsigned int *datalen,
 				   unsigned int cseq, unsigned int code)
 {
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+
 	if ((code >= 100 && code <= 199) ||
 	    (code >= 200 && code <= 299))
 		return process_sdp(skb, dptr, datalen, cseq);
-
-	return NF_ACCEPT;
+	else {
+		flush_expectations(ct);
+		return NF_ACCEPT;
+	}
 }
 
 static int process_update_response(struct sk_buff *skb,
 				   const char **dptr, unsigned int *datalen,
 				   unsigned int cseq, unsigned int code)
 {
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+
 	if ((code >= 100 && code <= 199) ||
 	    (code >= 200 && code <= 299))
 		return process_sdp(skb, dptr, datalen, cseq);
-
-	return NF_ACCEPT;
+	else {
+		flush_expectations(ct);
+		return NF_ACCEPT;
+	}
 }
 
 static int process_prack_response(struct sk_buff *skb,
 				  const char **dptr, unsigned int *datalen,
 				  unsigned int cseq, unsigned int code)
 {
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+
 	if ((code >= 100 && code <= 199) ||
 	    (code >= 200 && code <= 299))
 		return process_sdp(skb, dptr, datalen, cseq);
+	else {
+		flush_expectations(ct);
+		return NF_ACCEPT;
+	}
+}
+
+static int process_bye_request(struct sk_buff *skb,
+			       const char **dptr, unsigned int *datalen,
+			       unsigned int cseq)
+{
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
 
+	flush_expectations(ct);
 	return NF_ACCEPT;
 }
 
@@ -640,6 +683,7 @@ static const struct sip_handler sip_handlers[] = {
 	SIP_HANDLER("UPDATE", process_sdp, process_update_response),
 	SIP_HANDLER("ACK", process_sdp, NULL),
 	SIP_HANDLER("PRACK", process_sdp, process_prack_response),
+	SIP_HANDLER("BYE", process_bye_request, NULL),
 };
 
 static int process_sip_response(struct sk_buff *skb,