diff options
| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2013-09-02 15:34:56 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-04 00:27:25 -0400 |
| commit | 8b27f27797cac5ed9b2f3e63dac89a7ae70e70a7 (patch) | |
| tree | c77b49fdf6883aab5bea6988d89f7e204f49329b /net/core | |
| parent | 117961878cc1386923cfddcdd9016b777827c8dd (diff) | |
skb: allow skb_scrub_packet() to be used by tunnels
This function was only used when a packet was sent to another netns. Now, it can
also be used after tunnel encapsulation or decapsulation.
Only skb_orphan() should not be done when a packet is not crossing netns.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 2 | ||||
| -rw-r--r-- | net/core/skbuff.c | 19 |
2 files changed, 13 insertions, 8 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 6fbb0c90849..07684e880a5 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 2c3d0f53d19..d81cff119f7 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; |