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| author |   Janusz Dziedzic <janusz.dziedzic@tieto.com> | 2014-02-20 13:52:16 +0100 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2014-02-21 09:27:28 +0100 |
| commit | b0dfd2ea12d92b49639ad84f24ddd00c7ac144b5 (patch) | |
| tree | 7b71486a29271d772919d7e1d71f384b519b46cd /net/wireless/nl80211.c | |
| parent | mac80211: allow driver to return error from sched_scan_stop (diff) | |
| download | linux-dev-b0dfd2ea12d92b49639ad84f24ddd00c7ac144b5.tar.xz linux-dev-b0dfd2ea12d92b49639ad84f24ddd00c7ac144b5.zip | |
cfg80211: regulatory: introduce NL80211_RRF_AUTO_BW rule flag
Introduce NL80211_RRF_AUTO_BW rule flag. If this flag set
maximum available bandwidth should be calculated base on
contiguous rules and wider channels will be allowed to cross
multiple contiguous/overlapping frequency ranges.
In case of old kernels maximum bandwidth from regulatory
rule will be used, while there is no NL80211_RRF_AUTO_BW flag.
This fixes the previous commit 9752482083066af7ac18a5ca376f
("cfg80211: regulatory introduce maximum bandwidth calculation")
which was found to be a problem for userspace API compatibility.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
[edit commit log, use sizeof()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index be836098d342..1e5a434e4224 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4628,6 +4628,8 @@ static int parse_reg_rule(struct nlattr *tb[], return -EINVAL; if (!tb[NL80211_ATTR_FREQ_RANGE_END]) return -EINVAL; + if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) + return -EINVAL; if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) return -EINVAL; @@ -4637,9 +4639,8 @@ static int parse_reg_rule(struct nlattr *tb[], nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); freq_range->end_freq_khz = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); - if (tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) - freq_range->max_bandwidth_khz = - nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); + freq_range->max_bandwidth_khz = + nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); power_rule->max_eirp = nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); |