diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-03-11 11:35:06 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-03-11 11:37:35 +0100 |
commit | d387eaf51f8c869a41d90474d3599d1e89826254 (patch) | |
tree | 91be3790861142d1d63066f237d20fc32818169f /net/netfilter/ipvs/ip_vs_core.c | |
parent | 793882bfc31595dad0b54b9da8f43c5434151e03 (diff) | |
parent | 7617a24f83b5d67f4dab1844956be1cebc44aec8 (diff) | |
download | linux-stable-d387eaf51f8c869a41d90474d3599d1e89826254.tar.gz linux-stable-d387eaf51f8c869a41d90474d3599d1e89826254.tar.bz2 linux-stable-d387eaf51f8c869a41d90474d3599d1e89826254.zip |
Merge tag 'ipvs-fixes-for-v4.5' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs
Simon Horman says:
====================
please consider these IPVS fixes for v4.5 or
if it is too late please consider them for v4.6.
* Arnd Bergman has corrected an error whereby the SIP persistence engine
may incorrectly access protocol fields
* Julian Anastasov has corrected a problem reported by Jiri Bohac with the
connection rescheduling mechanism added in 3.10 when new SYNs in
connection to dead real server can be redirected to another real server.
* Marco Angaroni resolved a problem in the SIP persistence engine
whereby the Call-ID could not be found if it was at the beginning of a
SIP message.
====================
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_core.c')
-rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index f57b4dcdb233..b9a4082afa3a 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1089,6 +1089,7 @@ static inline bool is_new_conn_expected(const struct ip_vs_conn *cp, switch (cp->protocol) { case IPPROTO_TCP: return (cp->state == IP_VS_TCP_S_TIME_WAIT) || + (cp->state == IP_VS_TCP_S_CLOSE) || ((conn_reuse_mode & 2) && (cp->state == IP_VS_TCP_S_FIN_WAIT) && (cp->flags & IP_VS_CONN_F_NOOUTPUT)); @@ -1757,15 +1758,34 @@ ip_vs_in(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, int cp = pp->conn_in_get(ipvs, af, skb, &iph); conn_reuse_mode = sysctl_conn_reuse_mode(ipvs); - if (conn_reuse_mode && !iph.fragoffs && - is_new_conn(skb, &iph) && cp && - ((unlikely(sysctl_expire_nodest_conn(ipvs)) && cp->dest && - unlikely(!atomic_read(&cp->dest->weight))) || - unlikely(is_new_conn_expected(cp, conn_reuse_mode)))) { - if (!atomic_read(&cp->n_control)) - ip_vs_conn_expire_now(cp); - __ip_vs_conn_put(cp); - cp = NULL; + if (conn_reuse_mode && !iph.fragoffs && is_new_conn(skb, &iph) && cp) { + bool uses_ct = false, resched = false; + + if (unlikely(sysctl_expire_nodest_conn(ipvs)) && cp->dest && + unlikely(!atomic_read(&cp->dest->weight))) { + resched = true; + uses_ct = ip_vs_conn_uses_conntrack(cp, skb); + } else if (is_new_conn_expected(cp, conn_reuse_mode)) { + uses_ct = ip_vs_conn_uses_conntrack(cp, skb); + if (!atomic_read(&cp->n_control)) { + resched = true; + } else { + /* Do not reschedule controlling connection + * that uses conntrack while it is still + * referenced by controlled connection(s). + */ + resched = !uses_ct; + } + } + + if (resched) { + if (!atomic_read(&cp->n_control)) + ip_vs_conn_expire_now(cp); + __ip_vs_conn_put(cp); + if (uses_ct) + return NF_DROP; + cp = NULL; + } } if (unlikely(!cp)) { |