diff options
| -rw-r--r-- | include/linux/skbuff.h | 2 | ||||
| -rw-r--r-- | net/core/dev.c | 2 | ||||
| -rw-r--r-- | net/core/skbuff.c | 19 | ||||
| -rw-r--r-- | net/ipv4/ip_tunnel.c | 4 | ||||
| -rw-r--r-- | net/ipv6/ip6_tunnel.c | 4 | ||||
| -rw-r--r-- | net/ipv6/sit.c | 4 |
6 files changed, 20 insertions, 15 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6f1330af1ebb..2ddb48d9312c 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2392,7 +2392,7 @@ extern void skb_split(struct sk_buff *skb, struct sk_buff *skb1, const u32 len); extern int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen); -extern void skb_scrub_packet(struct sk_buff *skb); +extern void skb_scrub_packet(struct sk_buff *skb, bool xnet); extern struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features); diff --git a/net/core/dev.c b/net/core/dev.c index 6fbb0c90849b..07684e880a5d 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1697,7 +1697,7 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb) * call skb_scrub_packet() after it to clear pkt_type _after_ calling * eth_type_trans(). */ - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); return netif_rx(skb); } diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 2c3d0f53d198..d81cff119f73 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3500,17 +3500,22 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from, EXPORT_SYMBOL(skb_try_coalesce); /** - * skb_scrub_packet - scrub an skb before sending it to another netns + * skb_scrub_packet - scrub an skb * * @skb: buffer to clean - * - * skb_scrub_packet can be used to clean an skb before injecting it in - * another namespace. We have to clear all information in the skb that - * could impact namespace isolation. + * @xnet: packet is crossing netns + * + * skb_scrub_packet can be used after encapsulating or decapsulting a packet + * into/from a tunnel. Some information have to be cleared during these + * operations. + * skb_scrub_packet can also be used to clean a skb before injecting it in + * another namespace (@xnet == true). We have to clear all information in the + * skb that could impact namespace isolation. */ -void skb_scrub_packet(struct sk_buff *skb) +void skb_scrub_packet(struct sk_buff *skb, bool xnet) { - skb_orphan(skb); + if (xnet) + skb_orphan(skb); skb->tstamp.tv64 = 0; skb->pkt_type = PACKET_HOST; skb->skb_iif = 0; diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index 0a6cf0e69478..b0e74e17088f 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -462,7 +462,7 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb, } if (!net_eq(tunnel->net, dev_net(tunnel->dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); gro_cells_receive(&tunnel->gro_cells, skb); return 0; @@ -615,7 +615,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, } if (!net_eq(tunnel->net, dev_net(dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); if (tunnel->err_count > 0) { if (time_before(jiffies, diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index d6e00a39274c..72372ac90159 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -830,7 +830,7 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol, tstats->rx_bytes += skb->len; if (!net_eq(t->net, dev_net(t->dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); netif_rx(skb); @@ -1002,7 +1002,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb, } if (!net_eq(t->net, dev_net(dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); /* * Okay, now see if we can stuff it in the buffer as-is. diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 1d1458a3b7c4..b2e44f478e14 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -622,7 +622,7 @@ static int ipip6_rcv(struct sk_buff *skb) tstats->rx_bytes += skb->len; if (!net_eq(tunnel->net, dev_net(tunnel->dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); netif_rx(skb); return 0; @@ -861,7 +861,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, } if (!net_eq(tunnel->net, dev_net(dev))) - skb_scrub_packet(skb); + skb_scrub_packet(skb, true); /* * Okay, now see if we can stuff it in the buffer as-is. |