xfrm6_tunnel: exit_net cleanup check added

vaverin · davem330 · commit baeb0dbbb565 · 2017-11-14T15:46:17.000+09:00
Be sure that spi_byaddr and spi_byspi arrays initialized in net_init hook
were return to initial state

Signed-off-by: Vasily Averin &lt;vvs@virtuozzo.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
@@ -338,6 +338,14 @@ static int __net_init xfrm6_tunnel_net_init(struct net *net)
 
 static void __net_exit xfrm6_tunnel_net_exit(struct net *net)
 {
+	struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net);
+	unsigned int i;
+
+	for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++)
+		WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byaddr[i]));
+
+	for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++)
+		WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byspi[i]));
 }
 
 static struct pernet_operations xfrm6_tunnel_net_ops = {

Original file line number	Diff line number	Diff line change
`@@ -338,6 +338,14 @@ static int __net_init xfrm6_tunnel_net_init(struct net *net)`
`338`	`338`
`339`	`339`	`static void __net_exit xfrm6_tunnel_net_exit(struct net *net)`
`340`	`340`	`{`
	`341`	`+ struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net);`
	`342`	`+ unsigned int i;`
	`343`	`+`
	`344`	`+ for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++)`
	`345`	`+ WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byaddr[i]));`
	`346`	`+`
	`347`	`+ for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++)`
	`348`	`+ WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byspi[i]));`
`341`	`349`	`}`
`342`	`350`
`343`	`351`	`static struct pernet_operations xfrm6_tunnel_net_ops = {`