1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
5 static const struct nla_policy mt76_tm_policy[NUM_MT76_TM_ATTRS] = {
6 [MT76_TM_ATTR_RESET] = { .type = NLA_FLAG },
7 [MT76_TM_ATTR_STATE] = { .type = NLA_U8 },
8 [MT76_TM_ATTR_TX_COUNT] = { .type = NLA_U32 },
9 [MT76_TM_ATTR_TX_RATE_MODE] = { .type = NLA_U8 },
10 [MT76_TM_ATTR_TX_RATE_NSS] = { .type = NLA_U8 },
11 [MT76_TM_ATTR_TX_RATE_IDX] = { .type = NLA_U8 },
12 [MT76_TM_ATTR_TX_RATE_SGI] = { .type = NLA_U8 },
13 [MT76_TM_ATTR_TX_RATE_LDPC] = { .type = NLA_U8 },
14 [MT76_TM_ATTR_TX_RATE_STBC] = { .type = NLA_U8 },
15 [MT76_TM_ATTR_TX_LTF] = { .type = NLA_U8 },
16 [MT76_TM_ATTR_TX_ANTENNA] = { .type = NLA_U8 },
17 [MT76_TM_ATTR_TX_SPE_IDX] = { .type = NLA_U8 },
18 [MT76_TM_ATTR_TX_POWER_CONTROL] = { .type = NLA_U8 },
19 [MT76_TM_ATTR_TX_POWER] = { .type = NLA_NESTED },
20 [MT76_TM_ATTR_TX_DUTY_CYCLE] = { .type = NLA_U8 },
21 [MT76_TM_ATTR_TX_IPG] = { .type = NLA_U32 },
22 [MT76_TM_ATTR_TX_TIME] = { .type = NLA_U32 },
23 [MT76_TM_ATTR_FREQ_OFFSET] = { .type = NLA_U32 },
26 void mt76_testmode_tx_pending(struct mt76_phy *phy)
28 struct mt76_testmode_data *td = &phy->test;
29 struct mt76_dev *dev = phy->dev;
30 struct mt76_wcid *wcid = &dev->global_wcid;
31 struct sk_buff *skb = td->tx_skb;
36 if (!skb || !td->tx_pending)
39 qid = skb_get_queue_mapping(skb);
42 tx_queued_limit = td->tx_queued_limit ? td->tx_queued_limit : 1000;
44 spin_lock_bh(&q->lock);
46 while (td->tx_pending > 0 &&
47 td->tx_queued - td->tx_done < tx_queued_limit &&
48 q->queued < q->ndesc / 2) {
51 ret = dev->queue_ops->tx_queue_skb(dev, q, skb_get(skb), wcid,
60 dev->queue_ops->kick(dev, q);
62 spin_unlock_bh(&q->lock);
66 mt76_testmode_max_mpdu_len(struct mt76_phy *phy, u8 tx_rate_mode)
68 switch (tx_rate_mode) {
69 case MT76_TM_TX_MODE_HT:
70 return IEEE80211_MAX_MPDU_LEN_HT_7935;
71 case MT76_TM_TX_MODE_VHT:
72 case MT76_TM_TX_MODE_HE_SU:
73 case MT76_TM_TX_MODE_HE_EXT_SU:
74 case MT76_TM_TX_MODE_HE_TB:
75 case MT76_TM_TX_MODE_HE_MU:
76 if (phy->sband_5g.sband.vht_cap.cap &
77 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991)
78 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
79 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
80 case MT76_TM_TX_MODE_CCK:
81 case MT76_TM_TX_MODE_OFDM:
83 return IEEE80211_MAX_FRAME_LEN;
88 mt76_testmode_free_skb(struct mt76_phy *phy)
90 struct mt76_testmode_data *td = &phy->test;
91 struct sk_buff *skb = td->tx_skb;
96 if (skb_has_frag_list(skb)) {
97 kfree_skb_list(skb_shinfo(skb)->frag_list);
98 skb_shinfo(skb)->frag_list = NULL;
105 int mt76_testmode_alloc_skb(struct mt76_phy *phy, u32 len)
107 #define MT_TXP_MAX_LEN 4095
108 u16 fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
109 IEEE80211_FCTL_FROMDS;
110 struct mt76_testmode_data *td = &phy->test;
111 bool ext_phy = phy != &phy->dev->phy;
112 struct sk_buff **frag_tail, *head;
113 struct ieee80211_tx_info *info;
114 struct ieee80211_hdr *hdr;
115 u32 max_len, head_len;
118 max_len = mt76_testmode_max_mpdu_len(phy, td->tx_rate_mode);
121 else if (len < sizeof(struct ieee80211_hdr))
122 len = sizeof(struct ieee80211_hdr);
124 nfrags = len / MT_TXP_MAX_LEN;
125 head_len = nfrags ? MT_TXP_MAX_LEN : len;
127 if (len > IEEE80211_MAX_FRAME_LEN)
128 fc |= IEEE80211_STYPE_QOS_DATA;
130 head = alloc_skb(head_len, GFP_KERNEL);
134 hdr = __skb_put_zero(head, head_len);
135 hdr->frame_control = cpu_to_le16(fc);
136 memcpy(hdr->addr1, phy->macaddr, sizeof(phy->macaddr));
137 memcpy(hdr->addr2, phy->macaddr, sizeof(phy->macaddr));
138 memcpy(hdr->addr3, phy->macaddr, sizeof(phy->macaddr));
139 skb_set_queue_mapping(head, IEEE80211_AC_BE);
141 info = IEEE80211_SKB_CB(head);
142 info->flags = IEEE80211_TX_CTL_INJECTED |
143 IEEE80211_TX_CTL_NO_ACK |
144 IEEE80211_TX_CTL_NO_PS_BUFFER;
147 info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
149 frag_tail = &skb_shinfo(head)->frag_list;
151 for (i = 0; i < nfrags; i++) {
152 struct sk_buff *frag;
156 frag_len = len % MT_TXP_MAX_LEN;
158 frag_len = MT_TXP_MAX_LEN;
160 frag = alloc_skb(frag_len, GFP_KERNEL);
164 __skb_put_zero(frag, frag_len);
165 head->len += frag->len;
166 head->data_len += frag->len;
169 (*frag_tail)->next = frag;
176 mt76_testmode_free_skb(phy);
181 EXPORT_SYMBOL(mt76_testmode_alloc_skb);
184 mt76_testmode_tx_init(struct mt76_phy *phy)
186 struct mt76_testmode_data *td = &phy->test;
187 struct ieee80211_tx_info *info;
188 struct ieee80211_tx_rate *rate;
189 u8 max_nss = hweight8(phy->antenna_mask);
192 ret = mt76_testmode_alloc_skb(phy, td->tx_mpdu_len);
196 if (td->tx_rate_mode > MT76_TM_TX_MODE_VHT)
199 if (td->tx_antenna_mask)
200 max_nss = min_t(u8, max_nss, hweight8(td->tx_antenna_mask));
202 info = IEEE80211_SKB_CB(td->tx_skb);
203 rate = &info->control.rates[0];
205 rate->idx = td->tx_rate_idx;
207 switch (td->tx_rate_mode) {
208 case MT76_TM_TX_MODE_CCK:
209 if (phy->chandef.chan->band != NL80211_BAND_2GHZ)
215 case MT76_TM_TX_MODE_OFDM:
216 if (phy->chandef.chan->band != NL80211_BAND_2GHZ)
224 case MT76_TM_TX_MODE_HT:
225 if (rate->idx > 8 * max_nss &&
227 phy->chandef.width >= NL80211_CHAN_WIDTH_40))
230 rate->flags |= IEEE80211_TX_RC_MCS;
232 case MT76_TM_TX_MODE_VHT:
236 if (td->tx_rate_nss > max_nss)
239 ieee80211_rate_set_vht(rate, td->tx_rate_idx, td->tx_rate_nss);
240 rate->flags |= IEEE80211_TX_RC_VHT_MCS;
247 rate->flags |= IEEE80211_TX_RC_SHORT_GI;
249 if (td->tx_rate_ldpc)
250 info->flags |= IEEE80211_TX_CTL_LDPC;
252 if (td->tx_rate_stbc)
253 info->flags |= IEEE80211_TX_CTL_STBC;
255 if (td->tx_rate_mode >= MT76_TM_TX_MODE_HT) {
256 switch (phy->chandef.width) {
257 case NL80211_CHAN_WIDTH_40:
258 rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
260 case NL80211_CHAN_WIDTH_80:
261 rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
263 case NL80211_CHAN_WIDTH_80P80:
264 case NL80211_CHAN_WIDTH_160:
265 rate->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH;
276 mt76_testmode_tx_start(struct mt76_phy *phy)
278 struct mt76_testmode_data *td = &phy->test;
279 struct mt76_dev *dev = phy->dev;
283 td->tx_pending = td->tx_count;
284 mt76_worker_schedule(&dev->tx_worker);
288 mt76_testmode_tx_stop(struct mt76_phy *phy)
290 struct mt76_testmode_data *td = &phy->test;
291 struct mt76_dev *dev = phy->dev;
293 mt76_worker_disable(&dev->tx_worker);
297 mt76_worker_enable(&dev->tx_worker);
299 wait_event_timeout(dev->tx_wait, td->tx_done == td->tx_queued,
300 MT76_TM_TIMEOUT * HZ);
302 mt76_testmode_free_skb(phy);
306 mt76_testmode_param_set(struct mt76_testmode_data *td, u16 idx)
308 td->param_set[idx / 32] |= BIT(idx % 32);
312 mt76_testmode_param_present(struct mt76_testmode_data *td, u16 idx)
314 return td->param_set[idx / 32] & BIT(idx % 32);
318 mt76_testmode_init_defaults(struct mt76_phy *phy)
320 struct mt76_testmode_data *td = &phy->test;
322 if (td->tx_mpdu_len > 0)
325 td->tx_mpdu_len = 1024;
327 td->tx_rate_mode = MT76_TM_TX_MODE_OFDM;
332 __mt76_testmode_set_state(struct mt76_phy *phy, enum mt76_testmode_state state)
334 enum mt76_testmode_state prev_state = phy->test.state;
335 struct mt76_dev *dev = phy->dev;
338 if (prev_state == MT76_TM_STATE_TX_FRAMES)
339 mt76_testmode_tx_stop(phy);
341 if (state == MT76_TM_STATE_TX_FRAMES) {
342 err = mt76_testmode_tx_init(phy);
347 err = dev->test_ops->set_state(phy, state);
349 if (state == MT76_TM_STATE_TX_FRAMES)
350 mt76_testmode_tx_stop(phy);
355 if (state == MT76_TM_STATE_TX_FRAMES)
356 mt76_testmode_tx_start(phy);
357 else if (state == MT76_TM_STATE_RX_FRAMES) {
358 memset(&phy->test.rx_stats, 0, sizeof(phy->test.rx_stats));
361 phy->test.state = state;
366 int mt76_testmode_set_state(struct mt76_phy *phy, enum mt76_testmode_state state)
368 struct mt76_testmode_data *td = &phy->test;
369 struct ieee80211_hw *hw = phy->hw;
371 if (state == td->state && state == MT76_TM_STATE_OFF)
374 if (state > MT76_TM_STATE_OFF &&
375 (!test_bit(MT76_STATE_RUNNING, &phy->state) ||
376 !(hw->conf.flags & IEEE80211_CONF_MONITOR)))
379 if (state != MT76_TM_STATE_IDLE &&
380 td->state != MT76_TM_STATE_IDLE) {
383 ret = __mt76_testmode_set_state(phy, MT76_TM_STATE_IDLE);
388 return __mt76_testmode_set_state(phy, state);
391 EXPORT_SYMBOL(mt76_testmode_set_state);
394 mt76_tm_get_u8(struct nlattr *attr, u8 *dest, u8 min, u8 max)
401 val = nla_get_u8(attr);
402 if (val < min || val > max)
409 int mt76_testmode_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
412 struct mt76_phy *phy = hw->priv;
413 struct mt76_dev *dev = phy->dev;
414 struct mt76_testmode_data *td = &phy->test;
415 struct nlattr *tb[NUM_MT76_TM_ATTRS];
416 bool ext_phy = phy != &dev->phy;
424 err = nla_parse_deprecated(tb, MT76_TM_ATTR_MAX, data, len,
425 mt76_tm_policy, NULL);
431 mutex_lock(&dev->mutex);
433 if (tb[MT76_TM_ATTR_RESET]) {
434 mt76_testmode_set_state(phy, MT76_TM_STATE_OFF);
435 memset(td, 0, sizeof(*td));
438 mt76_testmode_init_defaults(phy);
440 if (tb[MT76_TM_ATTR_TX_COUNT])
441 td->tx_count = nla_get_u32(tb[MT76_TM_ATTR_TX_COUNT]);
443 if (tb[MT76_TM_ATTR_TX_RATE_IDX])
444 td->tx_rate_idx = nla_get_u8(tb[MT76_TM_ATTR_TX_RATE_IDX]);
446 if (mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_MODE], &td->tx_rate_mode,
447 0, MT76_TM_TX_MODE_MAX) ||
448 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_NSS], &td->tx_rate_nss,
449 1, hweight8(phy->antenna_mask)) ||
450 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_SGI], &td->tx_rate_sgi, 0, 2) ||
451 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_LDPC], &td->tx_rate_ldpc, 0, 1) ||
452 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_STBC], &td->tx_rate_stbc, 0, 1) ||
453 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_LTF], &td->tx_ltf, 0, 2) ||
454 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_ANTENNA], &td->tx_antenna_mask,
455 1 << (ext_phy * 2), phy->antenna_mask << (ext_phy * 2)) ||
456 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_SPE_IDX], &td->tx_spe_idx, 0, 27) ||
457 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_DUTY_CYCLE],
458 &td->tx_duty_cycle, 0, 99) ||
459 mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_POWER_CONTROL],
460 &td->tx_power_control, 0, 1))
463 if (tb[MT76_TM_ATTR_TX_LENGTH]) {
464 u32 val = nla_get_u32(tb[MT76_TM_ATTR_TX_LENGTH]);
466 if (val > mt76_testmode_max_mpdu_len(phy, td->tx_rate_mode) ||
467 val < sizeof(struct ieee80211_hdr))
470 td->tx_mpdu_len = val;
473 if (tb[MT76_TM_ATTR_TX_IPG])
474 td->tx_ipg = nla_get_u32(tb[MT76_TM_ATTR_TX_IPG]);
476 if (tb[MT76_TM_ATTR_TX_TIME])
477 td->tx_time = nla_get_u32(tb[MT76_TM_ATTR_TX_TIME]);
479 if (tb[MT76_TM_ATTR_FREQ_OFFSET])
480 td->freq_offset = nla_get_u32(tb[MT76_TM_ATTR_FREQ_OFFSET]);
482 if (tb[MT76_TM_ATTR_STATE]) {
483 state = nla_get_u32(tb[MT76_TM_ATTR_STATE]);
484 if (state > MT76_TM_STATE_MAX)
490 if (tb[MT76_TM_ATTR_TX_POWER]) {
495 nla_for_each_nested(cur, tb[MT76_TM_ATTR_TX_POWER], rem) {
496 if (nla_len(cur) != 1 ||
497 idx >= ARRAY_SIZE(td->tx_power))
500 td->tx_power[idx++] = nla_get_u8(cur);
504 if (dev->test_ops->set_params) {
505 err = dev->test_ops->set_params(phy, tb, state);
510 for (i = MT76_TM_ATTR_STATE; i < ARRAY_SIZE(tb); i++)
512 mt76_testmode_param_set(td, i);
515 if (tb[MT76_TM_ATTR_STATE])
516 err = mt76_testmode_set_state(phy, state);
519 mutex_unlock(&dev->mutex);
523 EXPORT_SYMBOL(mt76_testmode_cmd);
526 mt76_testmode_dump_stats(struct mt76_phy *phy, struct sk_buff *msg)
528 struct mt76_testmode_data *td = &phy->test;
529 struct mt76_dev *dev = phy->dev;
531 u64 rx_fcs_error = 0;
534 for (i = 0; i < ARRAY_SIZE(td->rx_stats.packets); i++) {
535 rx_packets += td->rx_stats.packets[i];
536 rx_fcs_error += td->rx_stats.fcs_error[i];
539 if (nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_PENDING, td->tx_pending) ||
540 nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_QUEUED, td->tx_queued) ||
541 nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_DONE, td->tx_done) ||
542 nla_put_u64_64bit(msg, MT76_TM_STATS_ATTR_RX_PACKETS, rx_packets,
543 MT76_TM_STATS_ATTR_PAD) ||
544 nla_put_u64_64bit(msg, MT76_TM_STATS_ATTR_RX_FCS_ERROR, rx_fcs_error,
545 MT76_TM_STATS_ATTR_PAD))
548 if (dev->test_ops->dump_stats)
549 return dev->test_ops->dump_stats(phy, msg);
554 int mt76_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *msg,
555 struct netlink_callback *cb, void *data, int len)
557 struct mt76_phy *phy = hw->priv;
558 struct mt76_dev *dev = phy->dev;
559 struct mt76_testmode_data *td = &phy->test;
560 struct nlattr *tb[NUM_MT76_TM_ATTRS] = {};
568 if (cb->args[2]++ > 0)
572 err = nla_parse_deprecated(tb, MT76_TM_ATTR_MAX, data, len,
573 mt76_tm_policy, NULL);
578 mutex_lock(&dev->mutex);
580 if (tb[MT76_TM_ATTR_STATS]) {
583 a = nla_nest_start(msg, MT76_TM_ATTR_STATS);
585 err = mt76_testmode_dump_stats(phy, msg);
586 nla_nest_end(msg, a);
592 mt76_testmode_init_defaults(phy);
595 if (nla_put_u32(msg, MT76_TM_ATTR_STATE, td->state))
598 if (dev->test_mtd.name &&
599 (nla_put_string(msg, MT76_TM_ATTR_MTD_PART, dev->test_mtd.name) ||
600 nla_put_u32(msg, MT76_TM_ATTR_MTD_OFFSET, dev->test_mtd.offset)))
603 if (nla_put_u32(msg, MT76_TM_ATTR_TX_COUNT, td->tx_count) ||
604 nla_put_u32(msg, MT76_TM_ATTR_TX_LENGTH, td->tx_mpdu_len) ||
605 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_MODE, td->tx_rate_mode) ||
606 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_NSS, td->tx_rate_nss) ||
607 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_IDX, td->tx_rate_idx) ||
608 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_SGI, td->tx_rate_sgi) ||
609 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_LDPC, td->tx_rate_ldpc) ||
610 nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_STBC, td->tx_rate_stbc) ||
611 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_LTF) &&
612 nla_put_u8(msg, MT76_TM_ATTR_TX_LTF, td->tx_ltf)) ||
613 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_ANTENNA) &&
614 nla_put_u8(msg, MT76_TM_ATTR_TX_ANTENNA, td->tx_antenna_mask)) ||
615 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_SPE_IDX) &&
616 nla_put_u8(msg, MT76_TM_ATTR_TX_SPE_IDX, td->tx_spe_idx)) ||
617 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_DUTY_CYCLE) &&
618 nla_put_u8(msg, MT76_TM_ATTR_TX_DUTY_CYCLE, td->tx_duty_cycle)) ||
619 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_IPG) &&
620 nla_put_u32(msg, MT76_TM_ATTR_TX_IPG, td->tx_ipg)) ||
621 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_TIME) &&
622 nla_put_u32(msg, MT76_TM_ATTR_TX_TIME, td->tx_time)) ||
623 (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_POWER_CONTROL) &&
624 nla_put_u8(msg, MT76_TM_ATTR_TX_POWER_CONTROL, td->tx_power_control)) ||
625 (mt76_testmode_param_present(td, MT76_TM_ATTR_FREQ_OFFSET) &&
626 nla_put_u8(msg, MT76_TM_ATTR_FREQ_OFFSET, td->freq_offset)))
629 if (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_POWER)) {
630 a = nla_nest_start(msg, MT76_TM_ATTR_TX_POWER);
634 for (i = 0; i < ARRAY_SIZE(td->tx_power); i++)
635 if (nla_put_u8(msg, i, td->tx_power[i]))
638 nla_nest_end(msg, a);
644 mutex_unlock(&dev->mutex);
648 EXPORT_SYMBOL(mt76_testmode_dump);