summaryrefslogtreecommitdiff
path: root/net/wireless
diff options
context:
space:
mode:
authorJohannes Berg <johannes.berg@intel.com>2015-01-15 16:14:02 +0100
committerJohannes Berg <johannes.berg@intel.com>2015-01-15 22:41:32 +0100
commitb51f3beecfbbfc946749a91fb444cb8917cf444f (patch)
tree68ecd024ca26b392b48599dc3725e4416d053d1f /net/wireless
parent97d910d0aaa619ca530d08e2b1125b8014ccb030 (diff)
downloadlinux-b51f3beecfbbfc946749a91fb444cb8917cf444f.tar.gz
cfg80211: change bandwidth reporting to explicit field
For some reason, we made the bandwidth separate flags, which is rather confusing - a single rate cannot have different bandwidths at the same time. Change this to no longer be flags but use a separate field for the bandwidth ('bw') instead. While at it, add support for 5 and 10 MHz rates - these are reported as regular legacy rates with their real bitrate, but tagged as 5/10 now to make it easier to distinguish them. In the nl80211 API, the flags are preserved, but the code now can also clearly only set a single one of the flags. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c40
-rw-r--r--net/wireless/util.c24
2 files changed, 47 insertions, 17 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8998484ea970..8e56eeb583aa 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3578,6 +3578,7 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
struct nlattr *rate;
u32 bitrate;
u16 bitrate_compat;
+ enum nl80211_attrs rate_flg;
rate = nla_nest_start(msg, attr);
if (!rate)
@@ -3594,12 +3595,36 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
return false;
+ switch (info->bw) {
+ case RATE_INFO_BW_5:
+ rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
+ break;
+ case RATE_INFO_BW_10:
+ rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
+ break;
+ default:
+ WARN_ON(1);
+ /* fall through */
+ case RATE_INFO_BW_20:
+ rate_flg = 0;
+ break;
+ case RATE_INFO_BW_40:
+ rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
+ break;
+ case RATE_INFO_BW_80:
+ rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
+ break;
+ case RATE_INFO_BW_160:
+ rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
+ break;
+ }
+
+ if (rate_flg && nla_put_flag(msg, rate_flg))
+ return false;
+
if (info->flags & RATE_INFO_FLAGS_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
return false;
- if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
- nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
- return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
@@ -3608,15 +3633,6 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
return false;
- if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
- nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
- return false;
- if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
- nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
- return false;
- if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
- nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
- return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 6942d48f1ac5..3535e8ade48f 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1073,9 +1073,24 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
if (WARN_ON_ONCE(rate->mcs > 9))
return 0;
- idx = rate->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH ? 3 :
- rate->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH ? 2 :
- rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH ? 1 : 0;
+ switch (rate->bw) {
+ case RATE_INFO_BW_160:
+ idx = 3;
+ break;
+ case RATE_INFO_BW_80:
+ idx = 2;
+ break;
+ case RATE_INFO_BW_40:
+ idx = 1;
+ break;
+ case RATE_INFO_BW_5:
+ case RATE_INFO_BW_10:
+ default:
+ WARN_ON(1);
+ /* fall through */
+ case RATE_INFO_BW_20:
+ idx = 0;
+ }
bitrate = base[idx][rate->mcs];
bitrate *= rate->nss;
@@ -1106,8 +1121,7 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate)
modulation = rate->mcs & 7;
streams = (rate->mcs >> 3) + 1;
- bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
- 13500000 : 6500000;
+ bitrate = (rate->bw == RATE_INFO_BW_40) ? 13500000 : 6500000;
if (modulation < 4)
bitrate *= (modulation + 1);