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| author | Marcelo Ricardo Leitner <mleitner@redhat.com> | 2015-02-23 15:02:34 -0300 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2015-02-25 13:46:35 +0900 |
| commit | d752c364571743d696c2a54a449ce77550c35ac5 (patch) | |
| tree | 160b607482c080c720f27626fa7a7130307cbbf3 /include/net/ip_vs.h | |
| parent | 7f73b9f1ca7334eec0ff9a40e37ece92dd3e420f (diff) | |
| download | op-kernel-dev-d752c364571743d696c2a54a449ce77550c35ac5.zip op-kernel-dev-d752c364571743d696c2a54a449ce77550c35ac5.tar.gz | |
ipvs: allow rescheduling of new connections when port reuse is detected
Currently, when TCP/SCTP port reusing happens, IPVS will find the old
entry and use it for the new one, behaving like a forced persistence.
But if you consider a cluster with a heavy load of small connections,
such reuse will happen often and may lead to a not optimal load
balancing and might prevent a new node from getting a fair load.
This patch introduces a new sysctl, conn_reuse_mode, that allows
controlling how to proceed when port reuse is detected. The default
value will allow rescheduling of new connections only if the old entry
was in TIME_WAIT state for TCP or CLOSED for SCTP.
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'include/net/ip_vs.h')
| -rw-r--r-- | include/net/ip_vs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index a627fe6..20fd233 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -941,6 +941,7 @@ struct netns_ipvs { int sysctl_nat_icmp_send; int sysctl_pmtu_disc; int sysctl_backup_only; + int sysctl_conn_reuse_mode; /* ip_vs_lblc */ int sysctl_lblc_expiration; @@ -1059,6 +1060,11 @@ static inline int sysctl_backup_only(struct netns_ipvs *ipvs) ipvs->sysctl_backup_only; } +static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) +{ + return ipvs->sysctl_conn_reuse_mode; +} + #else static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) @@ -1126,6 +1132,11 @@ static inline int sysctl_backup_only(struct netns_ipvs *ipvs) return 0; } +static inline int sysctl_conn_reuse_mode(struct netns_ipvs *ipvs) +{ + return 1; +} + #endif /* IPVS core functions |
