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| author | Yuchung Cheng <ycheng@google.com> | 2020-09-25 10:04:30 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-25 17:17:14 -0700 |
| commit | 686989700cabc444f25c1f1eb022aca8f2fc14b2 (patch) | |
| tree | 582acbcd45b06e696d8fa11d71df13a09add4246 /security | |
| parent | fd2146741c98569c8b4dc41b8ccae597150b122c (diff) | |
| download | lwn-686989700cabc444f25c1f1eb022aca8f2fc14b2.tar.gz lwn-686989700cabc444f25c1f1eb022aca8f2fc14b2.zip | |
tcp: simplify tcp_mark_skb_lost
This patch consolidates and simplifes the loss marking logic used
by a few loss detections (RACK, RFC6675, NewReno). Previously
each detection uses a subset of several intertwined subroutines.
This unncessary complexity has led to bugs (and fixes of bug fixes).
tcp_mark_skb_lost now is the single one routine to mark a packet loss
when a loss detection caller deems an skb ist lost:
1. rewind tp->retransmit_hint_skb if skb has lower sequence or
all lost ones have been retransmitted.
2. book-keeping: adjust flags and counts depending on if skb was
retransmitted or not.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions