void ath_debug_rate_stats(struct ath_softc *sc, struct ath_rx_status *rs, struct sk_buff *skb) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct ath_hw *ah = sc->sc_ah; struct ieee80211_rx_status *rxs; struct ath_rx_rate_stats *rstats; struct ieee80211_sta *sta; struct ath_node *an; if (!ieee80211_is_data(hdr->frame_control)) return; rcu_read_lock(); sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL); if (!sta) goto exit; an = (struct ath_node *) sta->drv_priv; rstats = &an->rx_rate_stats; rxs = IEEE80211_SKB_RXCB(skb); if (IS_HT_RATE(rs->rs_rate)) { if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats)) goto exit; if (rxs->bw == RATE_INFO_BW_40) rstats->ht_stats[rxs->rate_idx].ht40_cnt++; else rstats->ht_stats[rxs->rate_idx].ht20_cnt++; if (rxs->enc_flags & RX_ENC_FLAG_SHORT_GI) rstats->ht_stats[rxs->rate_idx].sgi_cnt++; else rstats->ht_stats[rxs->rate_idx].lgi_cnt++; goto exit; } if (IS_CCK_RATE(rs->rs_rate)) { if (rxs->enc_flags & RX_ENC_FLAG_SHORTPRE) rstats->cck_stats[rxs->rate_idx].cck_sp_cnt++; else rstats->cck_stats[rxs->rate_idx].cck_lp_cnt++; goto exit; } if (IS_OFDM_RATE(rs->rs_rate)) { if (ah->curchan->chan->band == NL80211_BAND_2GHZ) rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++; else rstats->ofdm_stats[rxs->rate_idx].ofdm_cnt++; } exit: rcu_read_unlock(); }
/* * Fill in the rate array information based on the current * node configuration and the choices made by the rate * selection code and ath_buf setup code. * * Later on, this may end up also being made by the * rate control code, but for now it can live here. * * This needs to be called just before the packet is * queued to the software queue or hardware queue, * so all of the needed fields in bf_state are setup. */ void ath_tx_rate_fill_rcflags(struct ath_softc *sc, struct ath_buf *bf) { struct ieee80211_node *ni = bf->bf_node; struct ieee80211com *ic = ni->ni_ic; const HAL_RATE_TABLE *rt = sc->sc_currates; struct ath_rc_series *rc = bf->bf_state.bfs_rc; uint8_t rate; int i; for (i = 0; i < ATH_RC_NUM; i++) { rc[i].flags = 0; if (rc[i].tries == 0) continue; rate = rt->info[rc[i].rix].rateCode; /* * XXX only do this for legacy rates? */ if (bf->bf_state.bfs_shpream) rate |= rt->info[rc[i].rix].shortPreamble; /* * Save this, used by the TX and completion code */ rc[i].ratecode = rate; if (bf->bf_state.bfs_txflags & (HAL_TXDESC_RTSENA | HAL_TXDESC_CTSENA)) rc[i].flags |= ATH_RC_RTSCTS_FLAG; /* Only enable shortgi, 2040, dual-stream if HT is set */ if (IS_HT_RATE(rate)) { rc[i].flags |= ATH_RC_HT_FLAG; if (ni->ni_chw == 40) rc[i].flags |= ATH_RC_CW40_FLAG; if (ni->ni_chw == 40 && ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40 && ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40) rc[i].flags |= ATH_RC_SGI_FLAG; if (ni->ni_chw == 20 && ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20 && ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20) rc[i].flags |= ATH_RC_SGI_FLAG; /* XXX dual stream? and 3-stream? */ } /* * Calculate the maximum 4ms frame length based * on the MCS rate, SGI and channel width flags. */ if ((rc[i].flags & ATH_RC_HT_FLAG) && (HT_RC_2_MCS(rate) < 32)) { int j; if (rc[i].flags & ATH_RC_CW40_FLAG) { if (rc[i].flags & ATH_RC_SGI_FLAG) j = MCS_HT40_SGI; else j = MCS_HT40; } else { if (rc[i].flags & ATH_RC_SGI_FLAG) j = MCS_HT20_SGI; else j = MCS_HT20; } rc[i].max4msframelen = ath_max_4ms_framelen[j][HT_RC_2_MCS(rate)]; } else rc[i].max4msframelen = 0; DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR, "%s: i=%d, rate=0x%x, flags=0x%x, max4ms=%d\n", __func__, i, rate, rc[i].flags, rc[i].max4msframelen); } }
/* * Fill in the rate array information based on the current * node configuration and the choices made by the rate * selection code and ath_buf setup code. * * Later on, this may end up also being made by the * rate control code, but for now it can live here. * * This needs to be called just before the packet is * queued to the software queue or hardware queue, * so all of the needed fields in bf_state are setup. */ void ath_tx_rate_fill_rcflags(struct ath_softc *sc, struct ath_buf *bf) { struct ieee80211_node *ni = bf->bf_node; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; const HAL_RATE_TABLE *rt = sc->sc_currates; struct ath_rc_series *rc = bf->bf_state.bfs_rc; uint8_t rate; int i; int do_ldpc; int do_stbc; /* * We only do LDPC if the rate is 11n, both we and the * receiver support LDPC and it's enabled. * * It's a global flag, not a per-try flag, so we clear * it if any of the rate entries aren't 11n. */ do_ldpc = 0; if ((ni->ni_vap->iv_htcaps & IEEE80211_HTCAP_LDPC) && (ni->ni_htcap & IEEE80211_HTCAP_LDPC)) do_ldpc = 1; do_stbc = 0; for (i = 0; i < ATH_RC_NUM; i++) { rc[i].flags = 0; if (rc[i].tries == 0) continue; rate = rt->info[rc[i].rix].rateCode; /* * Only enable short preamble for legacy rates */ if ((! IS_HT_RATE(rate)) && bf->bf_state.bfs_shpream) rate |= rt->info[rc[i].rix].shortPreamble; /* * Save this, used by the TX and completion code */ rc[i].ratecode = rate; if (bf->bf_state.bfs_txflags & (HAL_TXDESC_RTSENA | HAL_TXDESC_CTSENA)) rc[i].flags |= ATH_RC_RTSCTS_FLAG; /* * If we can't do LDPC, don't. */ if (! IS_HT_RATE(rate)) do_ldpc = 0; /* Only enable shortgi, 2040, dual-stream if HT is set */ if (IS_HT_RATE(rate)) { rc[i].flags |= ATH_RC_HT_FLAG; if (ni->ni_chw == 40) rc[i].flags |= ATH_RC_CW40_FLAG; if (ni->ni_chw == 40 && ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40 && ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40 && vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40) rc[i].flags |= ATH_RC_SGI_FLAG; if (ni->ni_chw == 20 && ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20 && ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20 && vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20) rc[i].flags |= ATH_RC_SGI_FLAG; /* * If we have STBC TX enabled and the receiver * can receive (at least) 1 stream STBC, AND it's * MCS 0-7, AND we have at least two chains enabled, * enable STBC. * * XXX TODO: .. and the rate is an 11n rate? */ if (ic->ic_htcaps & IEEE80211_HTCAP_TXSTBC && ni->ni_vap->iv_flags_ht & IEEE80211_FHT_STBC_TX && ni->ni_htcap & IEEE80211_HTCAP_RXSTBC_1STREAM && (sc->sc_cur_txchainmask > 1) && HT_RC_2_STREAMS(rate) == 1) { rc[i].flags |= ATH_RC_STBC_FLAG; do_stbc = 1; } /* * Dual / Triple stream rate? */ if (HT_RC_2_STREAMS(rate) == 2) rc[i].flags |= ATH_RC_DS_FLAG; else if (HT_RC_2_STREAMS(rate) == 3) rc[i].flags |= ATH_RC_TS_FLAG; } /* * Calculate the maximum TX power cap for the current * node. */ rc[i].tx_power_cap = ieee80211_get_node_txpower(ni); /* * Calculate the maximum 4ms frame length based * on the MCS rate, SGI and channel width flags. */ if ((rc[i].flags & ATH_RC_HT_FLAG) && (HT_RC_2_MCS(rate) < 32)) { int j; if (rc[i].flags & ATH_RC_CW40_FLAG) { if (rc[i].flags & ATH_RC_SGI_FLAG) j = MCS_HT40_SGI; else j = MCS_HT40; } else { if (rc[i].flags & ATH_RC_SGI_FLAG) j = MCS_HT20_SGI; else j = MCS_HT20; } rc[i].max4msframelen = ath_max_4ms_framelen[j][HT_RC_2_MCS(rate)]; } else rc[i].max4msframelen = 0; DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR, "%s: i=%d, rate=0x%x, flags=0x%x, max4ms=%d\n", __func__, i, rate, rc[i].flags, rc[i].max4msframelen); } /* * LDPC is a global flag, so ... */ if (do_ldpc) { bf->bf_state.bfs_txflags |= HAL_TXDESC_LDPC; sc->sc_stats.ast_tx_ldpc++; } if (do_stbc) { sc->sc_stats.ast_tx_stbc++; } }