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由 Eric Dumazet 提交于
Before accessing skb first fragment, better make sure there is one. This is probably not needed for old kernels, since an ethernet frame cannot contain only an ethernet header, but the recent GRO addition to tunnels makes this patch needed. Also skb_gro_reset_offset() can be static, it actually allows compiler to inline it. Signed-off-by: NEric Dumazet <edumazet@google.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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