Commit 11b311a8 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

ppp: add netns refcount tracker 



Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 285ec2fe

drivers/net/ppp/ppp_generic.c

+3 −2
Original line number Diff line number Diff line
@@ -173,6 +173,7 @@ struct channel { 
	spinlock_t	downl;		/* protects `chan', file.xq dequeue */

	struct ppp	*ppp;		/* ppp unit we're connected to */

	struct net	*chan_net;	/* the net channel belongs to */

	netns_tracker	ns_tracker;

	struct list_head clist;		/* link in list of channels per unit */

	rwlock_t	upl;		/* protects `ppp' and 'bridge' */

	struct channel __rcu *bridge;	/* "bridged" ppp channel */
@@ -2879,7 +2880,7 @@ int ppp_register_net_channel(struct net *net, struct ppp_channel *chan) 


	pch->ppp = NULL;

	pch->chan = chan;

	pch->chan_net = get_net(net);

	pch->chan_net = get_net_track(net, &pch->ns_tracker, GFP_KERNEL);

	chan->ppp = pch;

	init_ppp_file(&pch->file, CHANNEL);

	pch->file.hdrlen = chan->hdrlen;
@@ -3519,7 +3520,7 @@ ppp_disconnect_channel(struct channel *pch) 
 */

static void ppp_destroy_channel(struct channel *pch)

{

	put_net(pch->chan_net);

	put_net_track(pch->chan_net, &pch->ns_tracker);

	pch->chan_net = NULL;



	atomic_dec(&channel_count);