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| author | Daniel Drake <dsd@gentoo.org> | 2007-07-10 19:32:11 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2007-07-12 16:07:26 -0400 |
| commit | 63fc33ceb0ccc08b3f62d7bfe56a33eb33ca9427 (patch) | |
| tree | 6fb60af08616b2f4065cdd74b83f43c819f1853c /net/mac80211/ieee80211.c | |
| parent | 5628221caf88e2a052782b042e12da7cd34111b0 (diff) | |
| download | linux-63fc33ceb0ccc08b3f62d7bfe56a33eb33ca9427.tar.gz linux-63fc33ceb0ccc08b3f62d7bfe56a33eb33ca9427.tar.bz2 linux-63fc33ceb0ccc08b3f62d7bfe56a33eb33ca9427.zip | |
[PATCH] mac80211: improved 802.11g CTS protection
Currently, CTS protection is partially implemented twice:
1. via prism2 ioctls, only used by hostapd
2. via STA beacon parsing, recorded in sta.use_protection but never used
(other than printed in debugfs)
Protection control should be implemented on a per-subif basis. For example,
a single physical device may be running a soft AP on one channel, and a STA
on another. The AP interface should use protection based on what hostapd told
it, and the STA interface should use protection based on beacon parsing.
These should operate independantly: one subif using protection should not
influence the other.
To implement this, I moved the use_protection flag into ieee80211_sub_if_data
and removed the device-global cts_protect_erp_frames flag.
I also made the PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES write operation only
available for AP interfaces, to avoid any possibility of the user messing with
the behaviour of a STA.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/ieee80211.c')
| -rw-r--r-- | net/mac80211/ieee80211.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index fe32a2d16053..2ddf4ef4065e 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -442,7 +442,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx) if (!tx->u.tx.rate) return TXRX_DROP; if (tx->u.tx.mode->mode == MODE_IEEE80211G && - tx->local->cts_protect_erp_frames && tx->fragmented && + tx->sdata->use_protection && tx->fragmented && extra.nonerp) { tx->u.tx.last_frag_rate = tx->u.tx.rate; tx->u.tx.probe_last_frag = extra.probe ? 1 : 0; @@ -868,8 +868,7 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) * for the frame. */ if (mode->mode == MODE_IEEE80211G && (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) && - tx->u.tx.unicast && - tx->local->cts_protect_erp_frames && + tx->u.tx.unicast && tx->sdata->use_protection && !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS)) control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT; |