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tcp: mark skbs with SCM_TIMESTAMPING_OPT_STATS

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SOF_TIMESTAMPING_OPT_STATS can be enabled and disabled
while packets are collected on the error queue.
So, checking SOF_TIMESTAMPING_OPT_STATS in sk->sk_tsflags
is not enough to safely assume that the skb contains
OPT_STATS data.

Add a bit in sock_exterr_skb to indicate whether the
skb contains opt_stats data.

Fixes: 1c885808e4 ("tcp: SOF_TIMESTAMPING_OPT_STATS option for SO_TIMESTAMPING")
Reported-by: JongHwan Kim <zzoru007@gmail.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Soheil Hassas Yeganeh
2017-03-18 17:03:00 -04:00
committed by David S. Miller
parent 8605330aac
commit 4ef1b28694
3 changed files with 14 additions and 7 deletions
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2
include/linux/errqueue.h
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@@ -20,6 +20,8 @@ struct sock_exterr_skb {
struct sock_extended_err ee;
u16 addr_offset;
__be16 port;
u8 opt_stats:1,
unused:7;
};
#endif