From 40893fd0fd4e0eda8c6a53db6a8e6013b2d44c16 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Tue, 26 Mar 2013 23:11:22 +0000 Subject: net: switch to use skb_probe_transport_header() Switch to use the new help skb_probe_transport_header() to do the l4 header probing for untrusted sources. For packets with partial csum, the header should already been set by skb_partial_csum_set(). Cc: Eric Dumazet Signed-off-by: Jason Wang Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/tun.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) (limited to 'drivers/net/tun.c') diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 48cd73a2dc55..29538e6e914d 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -70,7 +70,6 @@ #include #include -#include /* Uncomment to enable debugging */ /* #define TUN_DEBUG 1 */ @@ -1050,7 +1049,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, bool zerocopy = false; int err; u32 rxhash; - struct flow_keys keys; if (!(tun->flags & TUN_NO_PI)) { if ((len -= sizeof(pi)) > total_len) @@ -1205,13 +1203,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, } skb_reset_network_header(skb); - - if (skb->ip_summed == CHECKSUM_PARTIAL) - skb_set_transport_header(skb, skb_checksum_start_offset(skb)); - else if (skb_flow_dissect(skb, &keys)) - skb_set_transport_header(skb, keys.thoff); - else - skb_reset_transport_header(skb); + skb_probe_transport_header(skb, 0); rxhash = skb_get_rxhash(skb); netif_rx_ni(skb); -- cgit 1.4.1