diff options
| author | Karl Beldan <karl.beldan@rivierawaves.com> | 2013-04-15 18:28:21 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-04-16 15:59:08 +0200 |
| commit | fbd647b17689d584748bad62395cd1161d42d37c (patch) | |
| tree | bd513410018d31ec19d764aa8a22ca147512edcb /net/mac80211 | |
| parent | 7a7da6ee0ea3443cd5111adffa80a3daba4bb8df (diff) | |
| download | linux-fbd647b17689d584748bad62395cd1161d42d37c.tar.bz2 | |
mac80211: fix rate control tx handler for VHT rates
Handle VHT rates like HT ones, otherwise we easily trigger the pre-HT
rates WARN_ON(rc_rate->idx >= sband->n_bitrates) which will set
rc_rate->idx to -1.
Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/tx.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index c93483fd477e..bb82c873f774 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -742,16 +742,18 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) } for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + struct ieee80211_tx_rate *rc_rate = &info->control.rates[i]; + /* * make sure there's no valid rate following * an invalid one, just in case drivers don't * take the API seriously to stop at -1. */ if (inval) { - info->control.rates[i].idx = -1; + rc_rate->idx = -1; continue; } - if (info->control.rates[i].idx < 0) { + if (rc_rate->idx < 0) { inval = true; continue; } @@ -760,36 +762,37 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) * For now assume MCS is already set up correctly, this * needs to be fixed. */ - if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) { - WARN_ON(info->control.rates[i].idx > 76); + if (rc_rate->flags & IEEE80211_TX_RC_MCS) { + WARN_ON(rc_rate->idx > 76); + continue; + } + + if (rc_rate->flags & IEEE80211_TX_RC_VHT_MCS) { + WARN_ON(ieee80211_rate_get_vht_mcs(rc_rate) > 9); continue; } /* set up RTS protection if desired */ if (rts) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_RTS_CTS; + rc_rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS; /* RC is busted */ - if (WARN_ON_ONCE(info->control.rates[i].idx >= - sband->n_bitrates)) { - info->control.rates[i].idx = -1; + if (WARN_ON_ONCE(rc_rate->idx >= sband->n_bitrates)) { + rc_rate->idx = -1; continue; } - rate = &sband->bitrates[info->control.rates[i].idx]; + rate = &sband->bitrates[rc_rate->idx]; /* set up short preamble */ if (short_preamble && rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_SHORT_PREAMBLE; + rc_rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE; /* set up G protection */ if (!rts && tx->sdata->vif.bss_conf.use_cts_prot && rate->flags & IEEE80211_RATE_ERP_G) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_CTS_PROTECT; + rc_rate->flags |= IEEE80211_TX_RC_USE_CTS_PROTECT; } return TX_CONTINUE; |