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    Subject[PATCH] [41/106] gro: reset skb_iif on reuse
    Date
    2.6.35-longterm review patch.  If anyone has any objections, please let me know.

    ------------------
    From: Andy Gospodarek <andy@greyhouse.net>

    commit 6d152e23ad1a7a5b40fef1f42e017d66e6115159 upstream.

    Like Herbert's change from a few days ago:

    66c46d741e2e60f0e8b625b80edb0ab820c46d7a gro: Reset dev pointer on reuse

    this may not be necessary at this point, but we should still clean up
    the skb->skb_iif. If not we may end up with an invalid valid for
    skb->skb_iif when the skb is reused and the check is done in
    __netif_receive_skb.

    Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Brandon Philips <bphilips@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>

    ---
    net/core/dev.c | 1 +
    1 file changed, 1 insertion(+)

    Index: linux-2.6.35.y/net/core/dev.c
    ===================================================================
    --- linux-2.6.35.y.orig/net/core/dev.c
    +++ linux-2.6.35.y/net/core/dev.c
    @@ -3232,6 +3232,7 @@ void napi_reuse_skb(struct napi_struct *
    __skb_pull(skb, skb_headlen(skb));
    skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
    skb->dev = napi->dev;
    + skb->skb_iif = 0;

    napi->skb = skb;
    }

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