tunnels: harmonize cleanup done on skb on rx path

The goal of this patch is to harmonize cleanup done on a skbuff on rx path.
Before this patch, behaviors were different depending of the tunnel type.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 6 insertions, 21 deletions

diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 88d7d7d1ecc..ac9fabe0300 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -461,8 +461,7 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
 		skb->dev = tunnel->dev;
 	}
 
-	if (!net_eq(tunnel->net, dev_net(tunnel->dev)))
-		skb_scrub_packet(skb, true);
+	skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(tunnel->dev)));
 
 	gro_cells_receive(&tunnel->gro_cells, skb);
 	return 0;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index bacc0bcf48c..9ae54b09254 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -2067,9 +2067,8 @@ static int __pim_rcv(struct mr_table *mrt, struct sk_buff *skb,
 	skb_reset_network_header(skb);
 	skb->protocol = htons(ETH_P_IP);
 	skb->ip_summed = CHECKSUM_NONE;
-	skb->pkt_type = PACKET_HOST;
 
-	skb_tunnel_rx(skb, reg_dev);
+	skb_tunnel_rx(skb, reg_dev, dev_net(reg_dev));
 
 	netif_rx(skb);
 
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index f179ff1f56e..db992a37301 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -509,8 +509,6 @@ static int ip6gre_rcv(struct sk_buff *skb)
 			goto drop;
 		}
 
-		secpath_reset(skb);
-
 		skb->protocol = gre_proto;
 		/* WCCP version 1 and 2 protocol decoding.
 		 * - Change protocol to IP
@@ -525,7 +523,6 @@ static int ip6gre_rcv(struct sk_buff *skb)
 		skb->mac_header = skb->network_header;
 		__pskb_pull(skb, offset);
 		skb_postpull_rcsum(skb, skb_transport_header(skb), offset);
-		skb->pkt_type = PACKET_HOST;
 
 		if (((flags&GRE_CSUM) && csum) ||
 		    (!(flags&GRE_CSUM) && tunnel->parms.i_flags&GRE_CSUM)) {
@@ -557,7 +554,7 @@ static int ip6gre_rcv(struct sk_buff *skb)
 			skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
 		}
 
-		__skb_tunnel_rx(skb, tunnel->dev);
+		__skb_tunnel_rx(skb, tunnel->dev, tunnel->net);
 
 		skb_reset_network_header(skb);
 
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index ecbcdbd4bc4..55999d923f2 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -802,14 +802,12 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
 			rcu_read_unlock();
 			goto discard;
 		}
-		secpath_reset(skb);
 		skb->mac_header = skb->network_header;
 		skb_reset_network_header(skb);
 		skb->protocol = htons(protocol);
-		skb->pkt_type = PACKET_HOST;
 		memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
 
-		__skb_tunnel_rx(skb, t->dev);
+		__skb_tunnel_rx(skb, t->dev, t->net);
 
 		err = dscp_ecn_decapsulate(t, ipv6h, skb);
 		if (unlikely(err)) {
@@ -829,9 +827,6 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
 		tstats->rx_packets++;
 		tstats->rx_bytes += skb->len;
 
-		if (!net_eq(t->net, dev_net(t->dev)))
-			skb_scrub_packet(skb, true);
-
 		netif_rx(skb);
 
 		rcu_read_unlock();
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index a60a84ef04f..f365310bfcc 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -672,9 +672,8 @@ static int pim6_rcv(struct sk_buff *skb)
 	skb_reset_network_header(skb);
 	skb->protocol = htons(ETH_P_IPV6);
 	skb->ip_summed = CHECKSUM_NONE;
-	skb->pkt_type = PACKET_HOST;
 
-	skb_tunnel_rx(skb, reg_dev);
+	skb_tunnel_rx(skb, reg_dev, dev_net(reg_dev));
 
 	netif_rx(skb);
 
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 82b425b9b7d..19abcc9d6a1 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -581,12 +581,10 @@ static int ipip6_rcv(struct sk_buff *skb)
 		    tunnel->parms.iph.protocol != 0)
 			goto out;
 
-		secpath_reset(skb);
 		skb->mac_header = skb->network_header;
 		skb_reset_network_header(skb);
 		IPCB(skb)->flags = 0;
 		skb->protocol = htons(ETH_P_IPV6);
-		skb->pkt_type = PACKET_HOST;
 
 		if (tunnel->dev->priv_flags & IFF_ISATAP) {
 			if (!isatap_chksrc(skb, iph, tunnel)) {
@@ -603,7 +601,7 @@ static int ipip6_rcv(struct sk_buff *skb)
 			}
 		}
 
-		__skb_tunnel_rx(skb, tunnel->dev);
+		__skb_tunnel_rx(skb, tunnel->dev, tunnel->net);
 
 		err = IP_ECN_decapsulate(iph, skb);
 		if (unlikely(err)) {
@@ -621,8 +619,6 @@ static int ipip6_rcv(struct sk_buff *skb)
 		tstats->rx_packets++;
 		tstats->rx_bytes += skb->len;
 
-		if (!net_eq(tunnel->net, dev_net(tunnel->dev)))
-			skb_scrub_packet(skb, true);
 		netif_rx(skb);
 
 		return 0;