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net-timestamp: sock_tx_timestamp() fix

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sock_tx_timestamp() should not ignore initial *tx_flags value, as TCP
stack can store SKBTX_SHARED_FRAG in it.

Also first argument (struct sock *) can be const.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 4ed2d765df ("net-timestamp: TCP timestamping")
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2014-08-06 11:49:29 +02:00
committed by David S. Miller
parent 85417aef44
commit 140c55d4b5
2 changed files with 17 additions and 9 deletions
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6
include/net/sock.h
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@@ -2199,9 +2199,11 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
/**
* sock_tx_timestamp - checks whether the outgoing packet is to be time stamped
* @sk: socket sending this packet
* @tx_flags: filled with instructions for time stamping
* @tx_flags: completed with instructions for time stamping
*
* Note : callers should take care of initial *tx_flags value (usually 0)
*/
void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
void sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags);
/**
* sk_eat_skb - Release a skb if it is no longer needed