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| author | Sven Eckelmann <sven@narfation.org> | 2026-06-01 11:47:29 +0200 |
|---|---|---|
| committer | Sven Eckelmann <sven@narfation.org> | 2026-06-03 08:02:20 +0200 |
| commit | f54c85ed42a1b27a516cf2a4728f5a612b799e07 (patch) | |
| tree | 029ae1bfc591728cbb2fab718b7a01748149a42e | |
| parent | 2b0d08f08ed3b2174f05c43089ec65f3543a025b (diff) | |
| download | linux-f54c85ed42a1b27a516cf2a4728f5a612b799e07.tar.gz linux-f54c85ed42a1b27a516cf2a4728f5a612b799e07.zip | |
batman-adv: tp_meter: handle seqno wrap-around for fast recovery detection
The recover variable and the last_sent sequence number are initialized on
purpose as a really high value which will wrap-around after the first 2000
bytes. The fast recovery precondition must therefore not use simple integer
comparisons but use helpers which are aware of the sequence number
wrap-arounds.
Cc: stable@kernel.org
Fixes: 33a3bb4a3345 ("batman-adv: throughput meter implementation")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
| -rw-r--r-- | net/batman-adv/tp_meter.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c index ae6acbc60c8e..3d3d06c88e1c 100644 --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -733,7 +733,7 @@ static void batadv_tp_recv_ack(struct batadv_priv *bat_priv, if (atomic_read(&tp_vars->dup_acks) != 3) goto out; - if (tp_vars->recover >= recv_ack) + if (!batadv_seq_before(tp_vars->recover, recv_ack)) goto out; /* if this is the third duplicate ACK do Fast Retransmit */ |