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| author | Ido Schimmel <idosch@mellanox.com> | 2017-11-02 17:14:05 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-03 15:40:41 +0900 |
| commit | 3ae6ec08292f01c6782d1a80be0b2cc675e0ecfc (patch) | |
| tree | b08c733cb6ff19687b9e35792ee3ed302232e091 /net/ipv4 | |
| parent | a882d20cdb7775ff8b4aac880255eff6a2c1c85e (diff) | |
| download | linux-3ae6ec08292f01c6782d1a80be0b2cc675e0ecfc.tar.gz linux-3ae6ec08292f01c6782d1a80be0b2cc675e0ecfc.tar.bz2 linux-3ae6ec08292f01c6782d1a80be0b2cc675e0ecfc.zip | |
ipv4: Send a netevent whenever multipath hash policy is changed
Devices performing IPv4 forwarding need to update their multipath hash
policy whenever it is changed.
Inform these devices by generating a netevent.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 4602af6d5358..8dcc2b185fcc 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -25,6 +25,7 @@ #include <net/inet_frag.h> #include <net/ping.h> #include <net/protocol.h> +#include <net/netevent.h> static int zero; static int one = 1; @@ -385,6 +386,23 @@ static int proc_tcp_available_ulp(struct ctl_table *ctl, return ret; } +#ifdef CONFIG_IP_ROUTE_MULTIPATH +static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + struct net *net = container_of(table->data, struct net, + ipv4.sysctl_fib_multipath_hash_policy); + int ret; + + ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); + if (write && ret == 0) + call_netevent_notifiers(NETEVENT_MULTIPATH_HASH_UPDATE, net); + + return ret; +} +#endif + static struct ctl_table ipv4_table[] = { { .procname = "tcp_max_orphans", @@ -907,7 +925,7 @@ static struct ctl_table ipv4_net_table[] = { .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec_minmax, + .proc_handler = proc_fib_multipath_hash_policy, .extra1 = &zero, .extra2 = &one, }, |