3 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h
index 3ff88c878308..d2e4bd7a7a14 100644
--- a/include/linux/netfilter/nf_conntrack_common.h
+++ b/include/linux/netfilter/nf_conntrack_common.h
@@ -69,6 +69,10 @@ enum ip_conntrack_status {
         /* Connection is dying (removed from lists), can not be unset. */
         IPS_DYING_BIT = 9,
         IPS_DYING = (1 << IPS_DYING_BIT),
+
+        /* Connection has fixed timeout. */
+        IPS_FIXED_TIMEOUT_BIT = 10,
+        IPS_FIXED_TIMEOUT = (1 << IPS_FIXED_TIMEOUT_BIT),
 };
 
 /* Connection tracking event bits */
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index a297da7bbef5..4fe9e69378df 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -1130,6 +1130,12 @@ void __ip_ct_refresh_acct(struct ip_conntrack *ct,
 
         write_lock_bh(&ip_conntrack_lock);
 
+        /* Only update if this is not a fixed timeout */
+        if (test_bit(IPS_FIXED_TIMEOUT_BIT, &ct->status)) {
+                write_unlock_bh(&ip_conntrack_lock);
+                return;
+        }
+
         /* If not in hash table, timer will not be active yet */
         if (!is_confirmed(ct)) {
                 ct->timeout.expires = extra_jiffies;
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f9b83f91371a..bc2bd4c3859e 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1396,6 +1396,12 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
 
         write_lock_bh(&nf_conntrack_lock);
 
+        /* Only update if this is not a fixed timeout */
+        if (test_bit(IPS_FIXED_TIMEOUT_BIT, &ct->status)) {
+                write_unlock_bh(&nf_conntrack_lock);
+                return;
+        }
+
         /* If not in hash table, timer will not be active yet */
         if (!nf_ct_is_confirmed(ct)) {
                 ct->timeout.expires = extra_jiffies;