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mac80211: Set basic rates while joining ibss network

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This patch adds support to nl80211 and mac80211 to set basic rates when
joining/creating ibss network.

Original patch was posted by Johannes Berg on the linux-wireless posting list.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Teemu Paasikivi
2010-06-14 12:55:31 +03:00
committed by John W. Linville
parent 7b9a4b0019
commit fbd2c8dcbc
4 changed files with 56 additions and 1 deletions
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49
net/wireless/nl80211.c
View File

@@ -3955,6 +3955,55 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
}
}
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
int n_rates =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
struct ieee80211_supported_band *sband =
wiphy->bands[ibss.channel->band];
int i, j;
if (n_rates == 0) {
err = -EINVAL;
goto out;
}
for (i = 0; i < n_rates; i++) {
int rate = (rates[i] & 0x7f) * 5;
bool found = false;
for (j = 0; j < sband->n_bitrates; j++) {
if (sband->bitrates[j].bitrate == rate) {
found = true;
ibss.basic_rates |= BIT(j);
break;
}
}
if (!found) {
err = -EINVAL;
goto out;
}
}
} else {
/*
* If no rates were explicitly configured,
* use the mandatory rate set for 11b or
* 11a for maximum compatibility.
*/
struct ieee80211_supported_band *sband =
wiphy->bands[ibss.channel->band];
int j;
u32 flag = ibss.channel->band == IEEE80211_BAND_5GHZ ?
IEEE80211_RATE_MANDATORY_A :
IEEE80211_RATE_MANDATORY_B;
for (j = 0; j < sband->n_bitrates; j++) {
if (sband->bitrates[j].flags & flag)
ibss.basic_rates |= BIT(j);
}
}
err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
out: