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| author | Gábor Stefanik <netrolller.3d@gmail.com> | 2009-04-23 17:36:14 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-05-06 19:14:51 (GMT) |
| commit | 9955151df7c6452cae2ed9649f53d265c91cf155 (patch) | |
| tree | 8f1edf3ba7281ec75742e47552ee3a154eebc025 /net | |
| parent | 97d3f458a1e3350dfcbdc3b6aefa75d20d59ee17 (diff) | |
| download | linux-9955151df7c6452cae2ed9649f53d265c91cf155.tar.xz | |
mac80211: Warn if the rate controller requests retries for a NO_ACK frame
To deter future rate scaling algorithm writers from requesting NO_ACK
packets to be retried, throw a WARN_ON_ONCE if the algorithm hands us
a try count over 1 for NO_ACK packet.
Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/tx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 1564a30..36e8e2d 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -558,6 +558,10 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) if (unlikely(!info->control.rates[0].count)) info->control.rates[0].count = 1; + if (WARN_ON_ONCE((info->control.rates[0].count > 1) && + (info->flags & IEEE80211_TX_CTL_NO_ACK))) + info->control.rates[0].count = 1; + if (is_multicast_ether_addr(hdr->addr1)) { /* * XXX: verify the rate is in the basic rateset |