diff options
| author | Ido Schimmel <idosch@nvidia.com> | 2021-05-19 15:08:18 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-05-19 12:47:47 -0700 |
| commit | eb0e4d59b6edbe678ecfc5d5b77608b634057f08 (patch) | |
| tree | 1aae634352e8eafd3f571a6dac294c583b102dec /net/ipv4 | |
| parent | 340f42f7ff0b87a92e69b50706a6c872da756c89 (diff) | |
net: Add notifications when multipath hash field change
In-kernel notifications are already sent when the multipath hash policy
itself changes, but not when the multipath hash fields change.
Add these notifications, so that interested listeners (e.g., switch ASIC
drivers) could perform the necessary configuration.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index ffb38ea06841..4fa77f182dcb 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -465,6 +465,22 @@ static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, return ret; } + +static int proc_fib_multipath_hash_fields(struct ctl_table *table, int write, + void *buffer, size_t *lenp, + loff_t *ppos) +{ + struct net *net; + int ret; + + net = container_of(table->data, struct net, + ipv4.sysctl_fib_multipath_hash_fields); + ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos); + if (write && ret == 0) + call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); + + return ret; +} #endif static struct ctl_table ipv4_table[] = { @@ -1061,7 +1077,7 @@ static struct ctl_table ipv4_net_table[] = { .data = &init_net.ipv4.sysctl_fib_multipath_hash_fields, .maxlen = sizeof(u32), .mode = 0644, - .proc_handler = proc_douintvec_minmax, + .proc_handler = proc_fib_multipath_hash_fields, .extra1 = SYSCTL_ONE, .extra2 = &fib_multipath_hash_fields_all_mask, }, |