From 3654e61137db891f5312e6dd813b961484b5fdf3 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Fri, 20 Jul 2012 11:59:53 +0300 Subject: ipvs: add pmtu_disc option to disable IP DF for TUN packets Disabling PMTU discovery can increase the output packet rate but some users have enough resources and prefer to fragment than to drop traffic. By default, we copy the DF bit but if pmtu_disc is disabled we do not send FRAG_NEEDED messages anymore. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- include/net/ip_vs.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/net/ip_vs.h') diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 4b8f18ff4789..ee75ccdf5188 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -888,6 +888,7 @@ struct netns_ipvs { unsigned int sysctl_sync_refresh_period; int sysctl_sync_retries; int sysctl_nat_icmp_send; + int sysctl_pmtu_disc; /* ip_vs_lblc */ int sysctl_lblc_expiration; @@ -974,6 +975,11 @@ static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) return ipvs->sysctl_sync_sock_size; } +static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) +{ + return ipvs->sysctl_pmtu_disc; +} + #else static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) @@ -1016,6 +1022,11 @@ static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs) return 0; } +static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) +{ + return 1; +} + #endif /* -- cgit v1.2.3