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mwifiex: fix 5G association failure after leaving 2.4G IBSS 

When assocaiting to an AP , mwifiex set supported data rates
based on target AP's capability. For 5G AP(11a mode), a/n/ac mode
would possibly be set.
However, for some chips which dont support 11AC mode current config_bands
will be used instead.

For example, if we join an IBSS in 11b mode ,adapter->config_bands
will be set to 1(11b mode). Then we leave IBSS ,and try to connect
5G a/n mode AP. At this time , only 11b mode data rates will be
supported in assoc request , which result in assoc failure with
reason code 18: Association denied due to requesting station not
supporting all rates.

This patch fix such a cornel case, by adding additional check for
current chip's 11ac capability.

Reported-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Marc Yang <yangyang@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Xinming Hu 2014-09-12 20:08:50 +05:30 committed by John W. Linville
parent 2703a66865
commit a659c4306b
1 changed files with 6 additions and 3 deletions
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9
drivers/net/wireless/mwifiex/sta_ioctl.c
View File

@ -287,10 +287,13 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
return -1;
if (mwifiex_band_to_radio_type(bss_desc->bss_band) ==
HostCmd_SCAN_RADIO_TYPE_BG)
HostCmd_SCAN_RADIO_TYPE_BG) {
config_bands = BAND_B | BAND_G | BAND_GN;
else
config_bands = BAND_A | BAND_AN | BAND_AAC;
} else {
config_bands = BAND_A | BAND_AN;
if (adapter->fw_bands & BAND_AAC)
config_bands |= BAND_AAC;
}
if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands))
adapter->config_bands = config_bands;