leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tcp: new helper tcp_rack_skb_timeout

Browse Source 
Create and export a new helper tcp_rack_skb_timeout and move tcp_is_rack
to prepare the final RTO change.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuchung Cheng
2018-05-16 16:40:16 -07:00
committed by David S. Miller
parent c77d62ffae
commit b8fef65a8a
3 changed files with 14 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
net/ipv4/tcp_input.c
View File

@@ -1917,6 +1917,11 @@ static inline void tcp_init_undo(struct tcp_sock *tp)
tp->undo_retrans = tp->retrans_out ? : -1;
}
static bool tcp_is_rack(const struct sock *sk)
{
return sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_LOSS_DETECTION;
}
/* If we detect SACK reneging, forget all SACK information
* and reset tags completely, otherwise preserve SACKs. If receiver
* dropped its ofo queue, we will know this due to reneging detection.
@@ -2031,11 +2036,6 @@ static inline int tcp_dupack_heuristics(const struct tcp_sock *tp)
return tp->sacked_out + 1;
}
static bool tcp_is_rack(const struct sock *sk)
{
return sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_LOSS_DETECTION;
}
/* Linux NewReno/SACK/ECN state machine.
* --------------------------------------
*