From 5a84d6ad4c9306afb467a600a4c6d7b50da49440 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Tue, 23 Aug 2011 14:14:00 +0200 Subject: [PATCH] staging: brcm80211: fill in proper rx rate in mac80211 rx status The brcmsmac driver supports different rates on 5GHz but this is not taken into account when providing the rate index in the receive status information passed to mac80211. Reviewed-by: Roland Vossen Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Henry Ptasinski Signed-off-by: Arend van Spriel Signed-off-by: Greg Kroah-Hartman --- drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 9 +++++++-- drivers/staging/brcm80211/brcmsmac/mac80211_if.h | 6 ++++++ drivers/staging/brcm80211/brcmsmac/main.c | 8 ++++++++ 3 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c index 7179edda94af..237017186131 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c @@ -971,6 +971,10 @@ static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { .hw_value = (rate100m / 5), \ } +/* + * The rate table is used for both 2.4G and 5G rates. The + * latter being a subset as it does not support CCK rates. + */ static struct ieee80211_rate legacy_ratetable[] = { RATE(10, 0), RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), @@ -1012,8 +1016,9 @@ static struct ieee80211_supported_band brcms_band_5GHz_nphy = { .band = IEEE80211_BAND_5GHZ, .channels = brcms_5ghz_nphy_chantable, .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), - .bitrates = legacy_ratetable + 4, - .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 4, + .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, + .n_bitrates = ARRAY_SIZE(legacy_ratetable) - + BRCMS_LEGACY_5G_RATE_OFFSET, .ht_cap = { .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.h b/drivers/staging/brcm80211/brcmsmac/mac80211_if.h index fcd711a7c383..7f290d7c0c41 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.h +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.h @@ -20,6 +20,12 @@ #include #include +/* + * Starting index for 5G rates in the + * legacy rate table. + */ +#define BRCMS_LEGACY_5G_RATE_OFFSET 4 + /* softmac ioctl definitions */ #define BRCMS_SET_SHORTSLOT_OVERRIDE 146 diff --git a/drivers/staging/brcm80211/brcmsmac/main.c b/drivers/staging/brcm80211/brcmsmac/main.c index 7e729d295d73..339ab28477a1 100644 --- a/drivers/staging/brcm80211/brcmsmac/main.c +++ b/drivers/staging/brcm80211/brcmsmac/main.c @@ -8252,6 +8252,14 @@ prep_mac80211_status(struct brcms_c_info *wlc, struct d11rxhdr *rxh, wiphy_err(wlc->wiphy, "%s: Unknown rate\n", __func__); } + /* + * For 5GHz, we should decrease the index as it is + * a subset of the 2.4G rates. See bitrates field + * of brcms_band_5GHz_nphy (in mac80211_if.c). + */ + if (rx_status->band == IEEE80211_BAND_5GHZ) + rx_status->rate_idx -= BRCMS_LEGACY_5G_RATE_OFFSET; + /* Determine short preamble and rate_idx */ preamble = 0; if (IS_CCK(rspec)) { -- 2.20.1