diff options
| author |   Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-09-02 15:49:26 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-09-04 22:26:14 -0700 |
| commit | a9fe8e29945d56f35235a3a0fba99b4cf181d211 (patch) | |
| tree | 54ad0e07c0f0d789abc31517256e43ad5ae878d6 /net/ipv4/sysctl_net_ipv4.c | |
| parent | ipv6: add sysctl_mld_qrv to configure query robustness variable (diff) | |
| download | linux-dev-a9fe8e29945d56f35235a3a0fba99b4cf181d211.tar.xz linux-dev-a9fe8e29945d56f35235a3a0fba99b4cf181d211.zip | |
ipv4: implement igmp_qrv sysctl to tune igmp robustness variable
As in IPv6 people might increase the igmp query robustness variable to
make sure unsolicited state change reports aren't lost on the network. Add
and document this new knob to igmp code.
RFCs allow tuning this parameter back to first IGMP RFC, so we also use
this setting for all counters, including source specific multicast.
Also take over sysctl value when upping the interface and don't reuse
the last one seen on the interface.
Cc: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 79a007c52558..45d156dacd61 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -450,6 +450,16 @@ static struct ctl_table ipv4_table[] = { .mode = 0644, .proc_handler = proc_dointvec }, +#ifdef CONFIG_IP_MULTICAST + { + .procname = "igmp_qrv", + .data = &sysctl_igmp_qrv, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &one + }, +#endif { .procname = "inet_peer_threshold", .data = &inet_peer_threshold, |