1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
2 | /* Copyright(c) 2018-2019 Realtek Corporation |
3 | */ |
4 | |
5 | #include "main.h" |
6 | #include "rx.h" |
7 | #include "ps.h" |
8 | #include "debug.h" |
9 | #include "fw.h" |
10 | |
11 | void rtw_rx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, |
12 | struct sk_buff *skb) |
13 | { |
14 | struct ieee80211_hdr *hdr; |
15 | struct rtw_vif *rtwvif; |
16 | |
17 | hdr = (struct ieee80211_hdr *)skb->data; |
18 | |
19 | if (!ieee80211_is_data(fc: hdr->frame_control)) |
20 | return; |
21 | |
22 | if (!is_broadcast_ether_addr(addr: hdr->addr1) && |
23 | !is_multicast_ether_addr(addr: hdr->addr1)) { |
24 | rtwdev->stats.rx_unicast += skb->len; |
25 | rtwdev->stats.rx_cnt++; |
26 | if (vif) { |
27 | rtwvif = (struct rtw_vif *)vif->drv_priv; |
28 | rtwvif->stats.rx_unicast += skb->len; |
29 | rtwvif->stats.rx_cnt++; |
30 | } |
31 | } |
32 | } |
33 | EXPORT_SYMBOL(rtw_rx_stats); |
34 | |
35 | struct rtw_rx_addr_match_data { |
36 | struct rtw_dev *rtwdev; |
37 | struct ieee80211_hdr *hdr; |
38 | struct rtw_rx_pkt_stat *pkt_stat; |
39 | u8 *bssid; |
40 | }; |
41 | |
42 | static void rtw_rx_phy_stat(struct rtw_dev *rtwdev, |
43 | struct rtw_rx_pkt_stat *pkt_stat, |
44 | struct ieee80211_hdr *hdr) |
45 | { |
46 | struct rtw_dm_info *dm_info = &rtwdev->dm_info; |
47 | struct rtw_pkt_count *cur_pkt_cnt = &dm_info->cur_pkt_count; |
48 | u8 rate_ss, rate_ss_evm, evm_id; |
49 | u8 i, idx; |
50 | |
51 | dm_info->curr_rx_rate = pkt_stat->rate; |
52 | |
53 | if (ieee80211_is_beacon(fc: hdr->frame_control)) |
54 | cur_pkt_cnt->num_bcn_pkt++; |
55 | |
56 | switch (pkt_stat->rate) { |
57 | case DESC_RATE1M...DESC_RATE11M: |
58 | goto pkt_num; |
59 | case DESC_RATE6M...DESC_RATE54M: |
60 | rate_ss = 0; |
61 | rate_ss_evm = 1; |
62 | evm_id = RTW_EVM_OFDM; |
63 | break; |
64 | case DESC_RATEMCS0...DESC_RATEMCS7: |
65 | case DESC_RATEVHT1SS_MCS0...DESC_RATEVHT1SS_MCS9: |
66 | rate_ss = 1; |
67 | rate_ss_evm = 1; |
68 | evm_id = RTW_EVM_1SS; |
69 | break; |
70 | case DESC_RATEMCS8...DESC_RATEMCS15: |
71 | case DESC_RATEVHT2SS_MCS0...DESC_RATEVHT2SS_MCS9: |
72 | rate_ss = 2; |
73 | rate_ss_evm = 2; |
74 | evm_id = RTW_EVM_2SS_A; |
75 | break; |
76 | default: |
77 | rtw_warn(rtwdev, "unknown pkt rate = %d\n" , pkt_stat->rate); |
78 | return; |
79 | } |
80 | |
81 | for (i = 0; i < rate_ss_evm; i++) { |
82 | idx = evm_id + i; |
83 | ewma_evm_add(e: &dm_info->ewma_evm[idx], |
84 | val: dm_info->rx_evm_dbm[i]); |
85 | } |
86 | |
87 | for (i = 0; i < rtwdev->hal.rf_path_num; i++) { |
88 | idx = RTW_SNR_OFDM_A + 4 * rate_ss + i; |
89 | ewma_snr_add(e: &dm_info->ewma_snr[idx], |
90 | val: dm_info->rx_snr[i]); |
91 | } |
92 | pkt_num: |
93 | cur_pkt_cnt->num_qry_pkt[pkt_stat->rate]++; |
94 | } |
95 | |
96 | static void rtw_rx_addr_match_iter(void *data, u8 *mac, |
97 | struct ieee80211_vif *vif) |
98 | { |
99 | struct rtw_rx_addr_match_data *iter_data = data; |
100 | struct ieee80211_sta *sta; |
101 | struct ieee80211_hdr *hdr = iter_data->hdr; |
102 | struct rtw_dev *rtwdev = iter_data->rtwdev; |
103 | struct rtw_sta_info *si; |
104 | struct rtw_rx_pkt_stat *pkt_stat = iter_data->pkt_stat; |
105 | u8 *bssid = iter_data->bssid; |
106 | |
107 | if (!ether_addr_equal(addr1: vif->bss_conf.bssid, addr2: bssid)) |
108 | return; |
109 | |
110 | if (!(ether_addr_equal(addr1: vif->addr, addr2: hdr->addr1) || |
111 | ieee80211_is_beacon(fc: hdr->frame_control))) |
112 | return; |
113 | |
114 | rtw_rx_phy_stat(rtwdev, pkt_stat, hdr); |
115 | sta = ieee80211_find_sta_by_ifaddr(hw: rtwdev->hw, addr: hdr->addr2, |
116 | localaddr: vif->addr); |
117 | if (!sta) |
118 | return; |
119 | |
120 | si = (struct rtw_sta_info *)sta->drv_priv; |
121 | ewma_rssi_add(e: &si->avg_rssi, val: pkt_stat->rssi); |
122 | } |
123 | |
124 | static void rtw_rx_addr_match(struct rtw_dev *rtwdev, |
125 | struct rtw_rx_pkt_stat *pkt_stat, |
126 | struct ieee80211_hdr *hdr) |
127 | { |
128 | struct rtw_rx_addr_match_data data = {}; |
129 | |
130 | if (pkt_stat->crc_err || pkt_stat->icv_err || !pkt_stat->phy_status || |
131 | ieee80211_is_ctl(fc: hdr->frame_control)) |
132 | return; |
133 | |
134 | data.rtwdev = rtwdev; |
135 | data.hdr = hdr; |
136 | data.pkt_stat = pkt_stat; |
137 | data.bssid = get_hdr_bssid(hdr); |
138 | |
139 | rtw_iterate_vifs_atomic(rtwdev, rtw_rx_addr_match_iter, &data); |
140 | } |
141 | |
142 | static void rtw_set_rx_freq_by_pktstat(struct rtw_rx_pkt_stat *pkt_stat, |
143 | struct ieee80211_rx_status *rx_status) |
144 | { |
145 | rx_status->freq = pkt_stat->freq; |
146 | rx_status->band = pkt_stat->band; |
147 | } |
148 | |
149 | void rtw_rx_fill_rx_status(struct rtw_dev *rtwdev, |
150 | struct rtw_rx_pkt_stat *pkt_stat, |
151 | struct ieee80211_hdr *hdr, |
152 | struct ieee80211_rx_status *rx_status, |
153 | u8 *phy_status) |
154 | { |
155 | struct ieee80211_hw *hw = rtwdev->hw; |
156 | u8 path; |
157 | |
158 | memset(rx_status, 0, sizeof(*rx_status)); |
159 | rx_status->freq = hw->conf.chandef.chan->center_freq; |
160 | rx_status->band = hw->conf.chandef.chan->band; |
161 | if (rtw_fw_feature_check(fw: &rtwdev->fw, feature: FW_FEATURE_SCAN_OFFLOAD) && |
162 | test_bit(RTW_FLAG_SCANNING, rtwdev->flags)) |
163 | rtw_set_rx_freq_by_pktstat(pkt_stat, rx_status); |
164 | if (pkt_stat->crc_err) |
165 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
166 | if (pkt_stat->decrypted) |
167 | rx_status->flag |= RX_FLAG_DECRYPTED; |
168 | |
169 | if (pkt_stat->rate >= DESC_RATEVHT1SS_MCS0) |
170 | rx_status->encoding = RX_ENC_VHT; |
171 | else if (pkt_stat->rate >= DESC_RATEMCS0) |
172 | rx_status->encoding = RX_ENC_HT; |
173 | |
174 | if (rx_status->band == NL80211_BAND_5GHZ && |
175 | pkt_stat->rate >= DESC_RATE6M && |
176 | pkt_stat->rate <= DESC_RATE54M) { |
177 | rx_status->rate_idx = pkt_stat->rate - DESC_RATE6M; |
178 | } else if (rx_status->band == NL80211_BAND_2GHZ && |
179 | pkt_stat->rate >= DESC_RATE1M && |
180 | pkt_stat->rate <= DESC_RATE54M) { |
181 | rx_status->rate_idx = pkt_stat->rate - DESC_RATE1M; |
182 | } else if (pkt_stat->rate >= DESC_RATEMCS0) { |
183 | rtw_desc_to_mcsrate(rate: pkt_stat->rate, mcs: &rx_status->rate_idx, |
184 | nss: &rx_status->nss); |
185 | } |
186 | |
187 | rx_status->flag |= RX_FLAG_MACTIME_START; |
188 | rx_status->mactime = pkt_stat->tsf_low; |
189 | |
190 | if (pkt_stat->bw == RTW_CHANNEL_WIDTH_80) |
191 | rx_status->bw = RATE_INFO_BW_80; |
192 | else if (pkt_stat->bw == RTW_CHANNEL_WIDTH_40) |
193 | rx_status->bw = RATE_INFO_BW_40; |
194 | else |
195 | rx_status->bw = RATE_INFO_BW_20; |
196 | |
197 | rx_status->signal = pkt_stat->signal_power; |
198 | for (path = 0; path < rtwdev->hal.rf_path_num; path++) { |
199 | rx_status->chains |= BIT(path); |
200 | rx_status->chain_signal[path] = pkt_stat->rx_power[path]; |
201 | } |
202 | |
203 | rtw_rx_addr_match(rtwdev, pkt_stat, hdr); |
204 | } |
205 | EXPORT_SYMBOL(rtw_rx_fill_rx_status); |
206 | |