diff options
| -rw-r--r-- | include/linux/nl80211.h | 9 | ||||
| -rw-r--r-- | include/net/cfg80211.h | 2 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 9 | ||||
| -rw-r--r-- | net/wireless/util.c | 2 |
4 files changed, 18 insertions, 4 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, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 0b564e83a24b..8837efc368f9 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3487,7 +3487,7 @@ void cfg80211_ch_switch_notify(struct net_device *dev, int freq, * * return 0 if MCS index >= 32 */ -u16 cfg80211_calculate_bitrate(struct rate_info *rate); +u32 cfg80211_calculate_bitrate(struct rate_info *rate); /* Logging, debugging and troubleshooting/diagnostic helpers. */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 77102e66f1ea..2a5cdb60bc6e 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2618,7 +2618,8 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr) { struct nlattr *rate; - u16 bitrate; + u32 bitrate; + u16 bitrate_compat; rate = nla_nest_start(msg, attr); if (!rate) @@ -2626,8 +2627,12 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ bitrate = cfg80211_calculate_bitrate(info); + /* report 16-bit bitrate only if we can */ + bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; if ((bitrate > 0 && - nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate)) || + nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) || + (bitrate_compat > 0 && + nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) || ((info->flags & RATE_INFO_FLAGS_MCS) && nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) || ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) && diff --git a/net/wireless/util.c b/net/wireless/util.c index 0228c64e73d8..6e52726f7fe3 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -900,7 +900,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, return err; } -u16 cfg80211_calculate_bitrate(struct rate_info *rate) +u32 cfg80211_calculate_bitrate(struct rate_info *rate) { int modulation, streams, bitrate; |