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Commit 349c9e3c authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

ipv4: icmp: use percpu allocation 



Get rid of nr_cpu_ids and use modern percpu allocation.

Note that the sockets themselves are not yet allocated
using NUMA affinity.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 58c11b5f

include/net/netns/ipv4.h

+2 −1
Original line number Diff line number Diff line
@@ -48,7 +48,8 @@ struct netns_ipv4 { 
	struct hlist_head	*fib_table_hash;

	struct sock		*fibnl;



	struct sock		**icmp_sk;

	struct sock  * __percpu	*icmp_sk;



	struct inet_peer_base	*peers;

	struct tcpm_hash_bucket	*tcp_metrics_hash;

	unsigned int		tcp_metrics_hash_log;

net/ipv4/icmp.c

+8 −9
Original line number Diff line number Diff line
@@ -205,7 +205,7 @@ static const struct icmp_control icmp_pointers[NR_ICMP_TYPES+1]; 
 */

static struct sock *icmp_sk(struct net *net)

{

	return net->ipv4.icmp_sk[smp_processor_id()];

	return *this_cpu_ptr(net->ipv4.icmp_sk);

}



static inline struct sock *icmp_xmit_lock(struct net *net)
@@ -1140,8 +1140,8 @@ static void __net_exit icmp_sk_exit(struct net *net) 
	int i;



	for_each_possible_cpu(i)

		inet_ctl_sock_destroy(net->ipv4.icmp_sk[i]);

	kfree(net->ipv4.icmp_sk);

		inet_ctl_sock_destroy(*per_cpu_ptr(net->ipv4.icmp_sk, i));

	free_percpu(net->ipv4.icmp_sk);

	net->ipv4.icmp_sk = NULL;

}
@@ -1149,9 +1149,8 @@ static int __net_init icmp_sk_init(struct net *net) 
{

	int i, err;



	net->ipv4.icmp_sk =

		kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL);

	if (net->ipv4.icmp_sk == NULL)

	net->ipv4.icmp_sk = alloc_percpu(struct sock *);

	if (!net->ipv4.icmp_sk)

		return -ENOMEM;



	for_each_possible_cpu(i) {
@@ -1162,7 +1161,7 @@ static int __net_init icmp_sk_init(struct net *net) 
		if (err < 0)

			goto fail;



		net->ipv4.icmp_sk[i] = sk;

		*per_cpu_ptr(net->ipv4.icmp_sk, i) = sk;



		/* Enough space for 2 64K ICMP packets, including

		 * sk_buff/skb_shared_info struct overhead.
@@ -1203,8 +1202,8 @@ static int __net_init icmp_sk_init(struct net *net) 


fail:

	for_each_possible_cpu(i)

		inet_ctl_sock_destroy(net->ipv4.icmp_sk[i]);

	kfree(net->ipv4.icmp_sk);

		inet_ctl_sock_destroy(*per_cpu_ptr(net->ipv4.icmp_sk, i));

	free_percpu(net->ipv4.icmp_sk);

	return err;

}