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author | Willem de Bruijn <willemb@google.com> | 2017-02-07 15:57:21 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2017-02-08 13:56:37 -0500 |
commit | 57031eb794906eea4e1c7b31dc1e2429c0af0c66 (patch) | |
tree | ffe0e21da8d4ae2b435561434cc391970196e42b /net/sched | |
parent | 217e6fa24ce28ec87fca8da93c9016cb78028612 (diff) | |
download | linux-57031eb794906eea4e1c7b31dc1e2429c0af0c66.tar.gz linux-57031eb794906eea4e1c7b31dc1e2429c0af0c66.tar.bz2 linux-57031eb794906eea4e1c7b31dc1e2429c0af0c66.zip |
packet: round up linear to header len
Link layer protocols may unconditionally pull headers, as Ethernet
does in eth_type_trans. Ensure that the entire link layer header
always lies in the skb linear segment. tpacket_snd has such a check.
Extend this to packet_snd.
Variable length link layer headers complicate the computation
somewhat. Here skb->len may be smaller than dev->hard_header_len.
Round up the linear length to be at least as long as the smallest of
the two.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
0 files changed, 0 insertions, 0 deletions