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| author | Sven Eckelmann <sven@narfation.org> | 2012-08-20 10:26:47 +0200 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2012-10-29 09:42:34 +0100 |
| commit | 8e7c15d6b5468f0dcdd887db1e5df88e629c00d6 (patch) | |
| tree | bf43c8b4dd7544a4a1dbccda2c27b0c26f5003ef /net/batman-adv | |
| parent | 36c1d1531130dcfadf845419fd15735b9b4c004f (diff) | |
| download | lwn-8e7c15d6b5468f0dcdd887db1e5df88e629c00d6.tar.gz lwn-8e7c15d6b5468f0dcdd887db1e5df88e629c00d6.zip | |
batman-adv: Remove extra check in batadv_bit_get_packet
batadv_bit_get_packet checks for all common situations before it decides that
the new received packet indicates that the host was restarted. This extra
condition check at the end of the function is not necessary because this
condition is always true.
This patch addresses Coverity #712296: Logically dead code
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv')
| -rw-r--r-- | net/batman-adv/bitarray.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index aea174cdbfbd..5453b17d8df2 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -79,20 +79,17 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, * or the old packet got delayed somewhere in the network. The * packet should be dropped without calling this function if the * seqno window is protected. + * + * seq_num_diff <= -BATADV_TQ_LOCAL_WINDOW_SIZE + * or + * seq_num_diff >= BATADV_EXPECTED_SEQNO_RANGE */ - if (seq_num_diff <= -BATADV_TQ_LOCAL_WINDOW_SIZE || - seq_num_diff >= BATADV_EXPECTED_SEQNO_RANGE) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Other host probably restarted!\n"); - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Other host probably restarted!\n"); - - bitmap_zero(seq_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); - if (set_mark) - batadv_set_bit(seq_bits, 0); - - return 1; - } + bitmap_zero(seq_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); + if (set_mark) + batadv_set_bit(seq_bits, 0); - /* never reached */ - return 0; + return 1; } |