diff options
| author | Julian Anastasov <ja@ssi.bg> | 2012-07-20 11:59:53 +0300 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2012-08-10 10:35:07 +0900 |
| commit | 3654e61137db891f5312e6dd813b961484b5fdf3 (patch) | |
| tree | f0006c4a286c5abe22aa3c5f9a66fb1c8b742a3a /net/netfilter/ipvs/ip_vs_ctl.c | |
| parent | f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e (diff) | |
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 <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_ctl.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_ctl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index d6d5ccabe067..03d3fc6d9d64 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1801,6 +1801,12 @@ static struct ctl_table vs_vars[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "pmtu_disc", + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, #ifdef CONFIG_IP_VS_DEBUG { .procname = "debug_level", @@ -3726,6 +3732,8 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net) ipvs->sysctl_sync_retries = clamp_t(int, DEFAULT_SYNC_RETRIES, 0, 3); tbl[idx++].data = &ipvs->sysctl_sync_retries; tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; + ipvs->sysctl_pmtu_disc = 1; + tbl[idx++].data = &ipvs->sysctl_pmtu_disc; ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); |