Commit eb0e4d59 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

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: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarPetr Machata <petrm@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 340f42f7

net/ipv4/sysctl_net_ipv4.c

+17 −1
Original line number Diff line number Diff line
@@ -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,

	},

net/ipv6/sysctl_net_ipv6.c

+17 −1
Original line number Diff line number Diff line
@@ -44,6 +44,22 @@ static int proc_rt6_multipath_hash_policy(struct ctl_table *table, int write, 
	return ret;

}



static int

proc_rt6_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,

			   ipv6.sysctl.multipath_hash_fields);

	ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos);

	if (write && ret == 0)

		call_netevent_notifiers(NETEVENT_IPV6_MPATH_HASH_UPDATE, net);



	return ret;

}



static struct ctl_table ipv6_table_template[] = {

	{

		.procname	= "bindv6only",
@@ -160,7 +176,7 @@ static struct ctl_table ipv6_table_template[] = { 
		.data		= &init_net.ipv6.sysctl.multipath_hash_fields,

		.maxlen		= sizeof(u32),

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax,

		.proc_handler	= proc_rt6_multipath_hash_fields,

		.extra1		= SYSCTL_ONE,

		.extra2		= &rt6_multipath_hash_fields_all_mask,

	},