netdev - [PATCH v3 12/21] xfrm6_tunnel: exit

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Date:   Mon, 6 Nov 2017 16:24:51 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     netdev@...r.kernel.org
Cc:     Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: [PATCH v3 12/21] xfrm6_tunnel: exit_net cleanup check added

Be sure that spi_byaddr and spi_byspi arrays initialized in net_init hook
were return to initial state

Signed-off-by: Vasily Averin <vvs@...tuozzo.com>
---
 net/ipv6/xfrm6_tunnel.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index 4e438bc..5ac3c90 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -338,6 +338,20 @@ 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++)
+		if (WARN_ONCE(!hlist_empty(&xfrm6_tn->spi_byaddr[i]),
+			      "net %x %s: spi_byaddr is not empty\n",
+			      net->ns.inum, __func__))
+			break;
+
+	for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++)
+		if (WARN_ONCE(!hlist_empty(&xfrm6_tn->spi_byspi[i]),
+			      "net %x %s: spi_byspi is not empty\n",
+			      net->ns.inum, __func__))
+			break;
 }
 
 static struct pernet_operations xfrm6_tunnel_net_ops = {
-- 
2.7.4