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| author |   Nick Chalk <nick@loadbalancer.org> | 2010-06-22 08:07:01 +0200 |
|---|---|---|
| committer |   Patrick McHardy <kaber@trash.net> | 2010-06-22 08:07:01 +0200 |
| commit | 26ec037f9841e49cc5c615deb8e1e73e5beab2ca (patch) | |
| tree | a7c4a77d173dd8759ed413a60b2941cbb1fca899 /net/netfilter/ipvs/ip_vs_core.c | |
| parent | netfilter: nf_nat: support user-specified SNAT rules in LOCAL_IN (diff) | |
| download | linux-dev-26ec037f9841e49cc5c615deb8e1e73e5beab2ca.tar.xz linux-dev-26ec037f9841e49cc5c615deb8e1e73e5beab2ca.zip | |
IPVS: one-packet scheduling
Allow one-packet scheduling for UDP connections. When the fwmark-based or
normal virtual service is marked with '-o' or '--ops' options all
connections are created only to schedule one packet. Useful to schedule UDP
packets from same client port to different real servers. Recommended with
RR or WRR schedulers (the connections are not visible with ipvsadm -L).
Signed-off-by: Nick Chalk <nick@loadbalancer.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_core.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 1cd6e3fd058b..50907d8472a3 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -194,6 +194,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc, struct ip_vs_dest *dest; struct ip_vs_conn *ct; __be16 dport; /* destination port to forward */ + __be16 flags; union nf_inet_addr snet; /* source network of the client, after masking */ @@ -340,6 +341,10 @@ ip_vs_sched_persist(struct ip_vs_service *svc, dport = ports[1]; } + flags = (svc->flags & IP_VS_SVC_F_ONEPACKET + && iph.protocol == IPPROTO_UDP)? + IP_VS_CONN_F_ONE_PACKET : 0; + /* * Create a new connection according to the template */ @@ -347,7 +352,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc, &iph.saddr, ports[0], &iph.daddr, ports[1], &dest->addr, dport, - 0, + flags, dest); if (cp == NULL) { ip_vs_conn_put(ct); @@ -377,7 +382,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb) struct ip_vs_conn *cp = NULL; struct ip_vs_iphdr iph; struct ip_vs_dest *dest; - __be16 _ports[2], *pptr; + __be16 _ports[2], *pptr, flags; ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph); pptr = skb_header_pointer(skb, iph.len, sizeof(_ports), _ports); @@ -407,6 +412,10 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb) return NULL; } + flags = (svc->flags & IP_VS_SVC_F_ONEPACKET + && iph.protocol == IPPROTO_UDP)? + IP_VS_CONN_F_ONE_PACKET : 0; + /* * Create a connection entry. */ @@ -414,7 +423,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb) &iph.saddr, pptr[0], &iph.daddr, pptr[1], &dest->addr, dest->port ? dest->port : pptr[1], - 0, + flags, dest); if (cp == NULL) return NULL; @@ -464,6 +473,9 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, if (sysctl_ip_vs_cache_bypass && svc->fwmark && unicast) { int ret, cs; struct ip_vs_conn *cp; + __u16 flags = (svc->flags & IP_VS_SVC_F_ONEPACKET && + iph.protocol == IPPROTO_UDP)? + IP_VS_CONN_F_ONE_PACKET : 0; union nf_inet_addr daddr = { .all = { 0, 0, 0, 0 } }; ip_vs_service_put(svc); @@ -474,7 +486,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, &iph.saddr, pptr[0], &iph.daddr, pptr[1], &daddr, 0, - IP_VS_CONN_F_BYPASS, + IP_VS_CONN_F_BYPASS | flags, NULL); if (cp == NULL) return NF_DROP; |