diff options
| author | John W. Linville <linville@tuxdriver.com> | 2009-12-09 16:43:52 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-12-21 11:27:31 -0500 |
| commit | 254416aae70ab2e6b57fd79782c8a67196234d02 (patch) | |
| tree | e28d54d1514634b591b54296b35bb9029e7b5a9c /net/wireless/nl80211.c | |
| parent | a252e749f1ae17e43ccc5824f7b1b5854417c98b (diff) | |
wireless: report reasonable bitrate for MCS rates through wextmaster-2009-12-21
Previously, cfg80211 had reported "0" for MCS (i.e. 802.11n) bitrates
through the wireless extensions interface. However, nl80211 was
converting MCS rates into a reasonable bitrate number. This patch moves
the nl80211 code to cfg80211 where it is now shared between both the
nl80211 interface and the wireless extensions interface.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 37 |
1 files changed, 2 insertions, 35 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index a6028433e3a..7cb0d647fc3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1637,39 +1637,6 @@ static int parse_station_flags(struct genl_info *info, return 0; } -static u16 nl80211_calculate_bitrate(struct rate_info *rate) -{ - int modulation, streams, bitrate; - - if (!(rate->flags & RATE_INFO_FLAGS_MCS)) - return rate->legacy; - - /* the formula below does only work for MCS values smaller than 32 */ - if (rate->mcs >= 32) - return 0; - - modulation = rate->mcs & 7; - streams = (rate->mcs >> 3) + 1; - - bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ? - 13500000 : 6500000; - - if (modulation < 4) - bitrate *= (modulation + 1); - else if (modulation == 4) - bitrate *= (modulation + 2); - else - bitrate *= (modulation + 3); - - bitrate *= streams; - - if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) - bitrate = (bitrate / 9) * 10; - - /* do NOT round down here */ - return (bitrate + 50000) / 100000; -} - static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, int flags, struct net_device *dev, u8 *mac_addr, struct station_info *sinfo) @@ -1716,8 +1683,8 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, if (!txrate) goto nla_put_failure; - /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */ - bitrate = nl80211_calculate_bitrate(&sinfo->txrate); + /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ + bitrate = cfg80211_calculate_bitrate(&sinfo->txrate); if (bitrate > 0) NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); |