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| author | Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> | 2012-07-05 14:25:49 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-07-05 15:18:30 +0200 |
| commit | 8eb41c8dfb9e2396d2452ada9023a83d610b9051 (patch) | |
| tree | 26bf8e96976e639a65441e3f2b1c03b1bcf2e7be /include/linux/nl80211.h | |
| parent | c5a7e582490c423f0685e42ee5cfb7c6de81adb0 (diff) | |
| download | linux-8eb41c8dfb9e2396d2452ada9023a83d610b9051.tar.gz linux-8eb41c8dfb9e2396d2452ada9023a83d610b9051.tar.bz2 linux-8eb41c8dfb9e2396d2452ada9023a83d610b9051.zip | |
{nl,cfg}80211: support high bitrates
Until now, a u16 value was used to represent bitrate value.
With VHT bitrates this becomes too small.
Introduce a new 32-bit bitrate attribute. nl80211 will report
both the new and the old attribute, unless the bitrate doesn't
fit into the old u16 attribute in which case only the new one
will be reported.
User space tools encouraged to prefer the 32-bit attribute, if
available (since it won't be available on older kernels.)
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
[reword commit message and comments a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/linux/nl80211.h')
| -rw-r--r-- | include/linux/nl80211.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 74cc55c1bf28..db961a59247f 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1638,12 +1638,20 @@ struct nl80211_sta_flag_update { * * These attribute types are used with %NL80211_STA_INFO_TXRATE * when getting information about the bitrate of a station. + * There are 2 attributes for bitrate, a legacy one that represents + * a 16-bit value, and new one that represents a 32-bit value. + * If the rate value fits into 16 bit, both attributes are reported + * with the same value. If the rate is too high to fit into 16 bits + * (>6.5535Gbps) only 32-bit attribute is included. + * User space tools encouraged to use the 32-bit attribute and fall + * back to the 16-bit one for compatibility with older kernels. * * @__NL80211_RATE_INFO_INVALID: attribute number 0 is reserved * @NL80211_RATE_INFO_BITRATE: total bitrate (u16, 100kbit/s) * @NL80211_RATE_INFO_MCS: mcs index for 802.11n (u8) * @NL80211_RATE_INFO_40_MHZ_WIDTH: 40 Mhz dualchannel bitrate * @NL80211_RATE_INFO_SHORT_GI: 400ns guard interval + * @NL80211_RATE_INFO_BITRATE32: total bitrate (u32, 100kbit/s) * @NL80211_RATE_INFO_MAX: highest rate_info number currently defined * @__NL80211_RATE_INFO_AFTER_LAST: internal use */ @@ -1653,6 +1661,7 @@ enum nl80211_rate_info { NL80211_RATE_INFO_MCS, NL80211_RATE_INFO_40_MHZ_WIDTH, NL80211_RATE_INFO_SHORT_GI, + NL80211_RATE_INFO_BITRATE32, /* keep last */ __NL80211_RATE_INFO_AFTER_LAST, |