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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/testmode.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/testmode.c503
1 files changed, 503 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/testmode.c b/drivers/net/wireless/mediatek/mt76/testmode.c
new file mode 100644
index 000000000..7ab99efb7
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/testmode.c
@@ -0,0 +1,503 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
+#include "mt76.h"
+
+static const struct nla_policy mt76_tm_policy[NUM_MT76_TM_ATTRS] = {
+ [MT76_TM_ATTR_RESET] = { .type = NLA_FLAG },
+ [MT76_TM_ATTR_STATE] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_COUNT] = { .type = NLA_U32 },
+ [MT76_TM_ATTR_TX_LENGTH] = { .type = NLA_U32 },
+ [MT76_TM_ATTR_TX_RATE_MODE] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_RATE_NSS] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_RATE_IDX] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_RATE_SGI] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_RATE_LDPC] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_ANTENNA] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_POWER_CONTROL] = { .type = NLA_U8 },
+ [MT76_TM_ATTR_TX_POWER] = { .type = NLA_NESTED },
+ [MT76_TM_ATTR_FREQ_OFFSET] = { .type = NLA_U32 },
+};
+
+void mt76_testmode_tx_pending(struct mt76_dev *dev)
+{
+ struct mt76_testmode_data *td = &dev->test;
+ struct mt76_wcid *wcid = &dev->global_wcid;
+ struct sk_buff *skb = td->tx_skb;
+ struct mt76_queue *q;
+ int qid;
+
+ if (!skb || !td->tx_pending)
+ return;
+
+ qid = skb_get_queue_mapping(skb);
+ q = dev->q_tx[qid];
+
+ spin_lock_bh(&q->lock);
+
+ while (td->tx_pending > 0 && td->tx_queued - td->tx_done < 1000 &&
+ q->queued < q->ndesc / 2) {
+ int ret;
+
+ ret = dev->queue_ops->tx_queue_skb(dev, qid, skb_get(skb), wcid, NULL);
+ if (ret < 0)
+ break;
+
+ td->tx_pending--;
+ td->tx_queued++;
+ }
+
+ dev->queue_ops->kick(dev, q);
+
+ spin_unlock_bh(&q->lock);
+}
+
+
+static int
+mt76_testmode_tx_init(struct mt76_dev *dev)
+{
+ struct mt76_testmode_data *td = &dev->test;
+ struct ieee80211_tx_info *info;
+ struct ieee80211_hdr *hdr;
+ struct sk_buff *skb;
+ u16 fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
+ IEEE80211_FCTL_FROMDS;
+ struct ieee80211_tx_rate *rate;
+ u8 max_nss = hweight8(dev->phy.antenna_mask);
+
+ if (td->tx_antenna_mask)
+ max_nss = min_t(u8, max_nss, hweight8(td->tx_antenna_mask));
+
+ skb = alloc_skb(td->tx_msdu_len, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ dev_kfree_skb(td->tx_skb);
+ td->tx_skb = skb;
+ hdr = __skb_put_zero(skb, td->tx_msdu_len);
+ hdr->frame_control = cpu_to_le16(fc);
+ memcpy(hdr->addr1, dev->macaddr, sizeof(dev->macaddr));
+ memcpy(hdr->addr2, dev->macaddr, sizeof(dev->macaddr));
+ memcpy(hdr->addr3, dev->macaddr, sizeof(dev->macaddr));
+
+ info = IEEE80211_SKB_CB(skb);
+ info->flags = IEEE80211_TX_CTL_INJECTED |
+ IEEE80211_TX_CTL_NO_ACK |
+ IEEE80211_TX_CTL_NO_PS_BUFFER;
+ rate = &info->control.rates[0];
+ rate->count = 1;
+ rate->idx = td->tx_rate_idx;
+
+ switch (td->tx_rate_mode) {
+ case MT76_TM_TX_MODE_CCK:
+ if (dev->phy.chandef.chan->band != NL80211_BAND_2GHZ)
+ return -EINVAL;
+
+ if (rate->idx > 4)
+ return -EINVAL;
+ break;
+ case MT76_TM_TX_MODE_OFDM:
+ if (dev->phy.chandef.chan->band != NL80211_BAND_2GHZ)
+ break;
+
+ if (rate->idx > 8)
+ return -EINVAL;
+
+ rate->idx += 4;
+ break;
+ case MT76_TM_TX_MODE_HT:
+ if (rate->idx > 8 * max_nss &&
+ !(rate->idx == 32 &&
+ dev->phy.chandef.width >= NL80211_CHAN_WIDTH_40))
+ return -EINVAL;
+
+ rate->flags |= IEEE80211_TX_RC_MCS;
+ break;
+ case MT76_TM_TX_MODE_VHT:
+ if (rate->idx > 9)
+ return -EINVAL;
+
+ if (td->tx_rate_nss > max_nss)
+ return -EINVAL;
+
+ ieee80211_rate_set_vht(rate, td->tx_rate_idx, td->tx_rate_nss);
+ rate->flags |= IEEE80211_TX_RC_VHT_MCS;
+ break;
+ default:
+ break;
+ }
+
+ if (td->tx_rate_sgi)
+ rate->flags |= IEEE80211_TX_RC_SHORT_GI;
+
+ if (td->tx_rate_ldpc)
+ info->flags |= IEEE80211_TX_CTL_LDPC;
+
+ if (td->tx_rate_mode >= MT76_TM_TX_MODE_HT) {
+ switch (dev->phy.chandef.width) {
+ case NL80211_CHAN_WIDTH_40:
+ rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+ break;
+ case NL80211_CHAN_WIDTH_80:
+ rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
+ break;
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_160:
+ rate->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH;
+ break;
+ default:
+ break;
+ }
+ }
+
+ skb_set_queue_mapping(skb, IEEE80211_AC_BE);
+
+ return 0;
+}
+
+static void
+mt76_testmode_tx_start(struct mt76_dev *dev)
+{
+ struct mt76_testmode_data *td = &dev->test;
+
+ td->tx_queued = 0;
+ td->tx_done = 0;
+ td->tx_pending = td->tx_count;
+ mt76_worker_schedule(&dev->tx_worker);
+}
+
+static void
+mt76_testmode_tx_stop(struct mt76_dev *dev)
+{
+ struct mt76_testmode_data *td = &dev->test;
+
+ mt76_worker_disable(&dev->tx_worker);
+
+ td->tx_pending = 0;
+
+ mt76_worker_enable(&dev->tx_worker);
+
+ wait_event_timeout(dev->tx_wait, td->tx_done == td->tx_queued, 10 * HZ);
+
+ dev_kfree_skb(td->tx_skb);
+ td->tx_skb = NULL;
+}
+
+static inline void
+mt76_testmode_param_set(struct mt76_testmode_data *td, u16 idx)
+{
+ td->param_set[idx / 32] |= BIT(idx % 32);
+}
+
+static inline bool
+mt76_testmode_param_present(struct mt76_testmode_data *td, u16 idx)
+{
+ return td->param_set[idx / 32] & BIT(idx % 32);
+}
+
+static void
+mt76_testmode_init_defaults(struct mt76_dev *dev)
+{
+ struct mt76_testmode_data *td = &dev->test;
+
+ if (td->tx_msdu_len > 0)
+ return;
+
+ td->tx_msdu_len = 1024;
+ td->tx_count = 1;
+ td->tx_rate_mode = MT76_TM_TX_MODE_OFDM;
+ td->tx_rate_nss = 1;
+}
+
+static int
+__mt76_testmode_set_state(struct mt76_dev *dev, enum mt76_testmode_state state)
+{
+ enum mt76_testmode_state prev_state = dev->test.state;
+ int err;
+
+ if (prev_state == MT76_TM_STATE_TX_FRAMES)
+ mt76_testmode_tx_stop(dev);
+
+ if (state == MT76_TM_STATE_TX_FRAMES) {
+ err = mt76_testmode_tx_init(dev);
+ if (err)
+ return err;
+ }
+
+ err = dev->test_ops->set_state(dev, state);
+ if (err) {
+ if (state == MT76_TM_STATE_TX_FRAMES)
+ mt76_testmode_tx_stop(dev);
+
+ return err;
+ }
+
+ if (state == MT76_TM_STATE_TX_FRAMES)
+ mt76_testmode_tx_start(dev);
+ else if (state == MT76_TM_STATE_RX_FRAMES) {
+ memset(&dev->test.rx_stats, 0, sizeof(dev->test.rx_stats));
+ }
+
+ dev->test.state = state;
+
+ return 0;
+}
+
+int mt76_testmode_set_state(struct mt76_dev *dev, enum mt76_testmode_state state)
+{
+ struct mt76_testmode_data *td = &dev->test;
+ struct ieee80211_hw *hw = dev->phy.hw;
+
+ if (state == td->state && state == MT76_TM_STATE_OFF)
+ return 0;
+
+ if (state > MT76_TM_STATE_OFF &&
+ (!test_bit(MT76_STATE_RUNNING, &dev->phy.state) ||
+ !(hw->conf.flags & IEEE80211_CONF_MONITOR)))
+ return -ENOTCONN;
+
+ if (state != MT76_TM_STATE_IDLE &&
+ td->state != MT76_TM_STATE_IDLE) {
+ int ret;
+
+ ret = __mt76_testmode_set_state(dev, MT76_TM_STATE_IDLE);
+ if (ret)
+ return ret;
+ }
+
+ return __mt76_testmode_set_state(dev, state);
+
+}
+EXPORT_SYMBOL(mt76_testmode_set_state);
+
+static int
+mt76_tm_get_u8(struct nlattr *attr, u8 *dest, u8 min, u8 max)
+{
+ u8 val;
+
+ if (!attr)
+ return 0;
+
+ val = nla_get_u8(attr);
+ if (val < min || val > max)
+ return -EINVAL;
+
+ *dest = val;
+ return 0;
+}
+
+int mt76_testmode_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ void *data, int len)
+{
+ struct mt76_phy *phy = hw->priv;
+ struct mt76_dev *dev = phy->dev;
+ struct mt76_testmode_data *td = &dev->test;
+ struct nlattr *tb[NUM_MT76_TM_ATTRS];
+ u32 state;
+ int err;
+ int i;
+
+ if (!dev->test_ops)
+ return -EOPNOTSUPP;
+
+ err = nla_parse_deprecated(tb, MT76_TM_ATTR_MAX, data, len,
+ mt76_tm_policy, NULL);
+ if (err)
+ return err;
+
+ err = -EINVAL;
+
+ mutex_lock(&dev->mutex);
+
+ if (tb[MT76_TM_ATTR_RESET]) {
+ mt76_testmode_set_state(dev, MT76_TM_STATE_OFF);
+ memset(td, 0, sizeof(*td));
+ }
+
+ mt76_testmode_init_defaults(dev);
+
+ if (tb[MT76_TM_ATTR_TX_COUNT])
+ td->tx_count = nla_get_u32(tb[MT76_TM_ATTR_TX_COUNT]);
+
+ if (tb[MT76_TM_ATTR_TX_LENGTH]) {
+ u32 val = nla_get_u32(tb[MT76_TM_ATTR_TX_LENGTH]);
+
+ if (val > IEEE80211_MAX_FRAME_LEN ||
+ val < sizeof(struct ieee80211_hdr))
+ goto out;
+
+ td->tx_msdu_len = val;
+ }
+
+ if (tb[MT76_TM_ATTR_TX_RATE_IDX])
+ td->tx_rate_idx = nla_get_u8(tb[MT76_TM_ATTR_TX_RATE_IDX]);
+
+ if (mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_MODE], &td->tx_rate_mode,
+ 0, MT76_TM_TX_MODE_MAX) ||
+ mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_NSS], &td->tx_rate_nss,
+ 1, hweight8(phy->antenna_mask)) ||
+ mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_SGI], &td->tx_rate_sgi, 0, 1) ||
+ mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_LDPC], &td->tx_rate_ldpc, 0, 1) ||
+ mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_ANTENNA], &td->tx_antenna_mask, 1,
+ phy->antenna_mask) ||
+ mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_POWER_CONTROL],
+ &td->tx_power_control, 0, 1))
+ goto out;
+
+ if (tb[MT76_TM_ATTR_FREQ_OFFSET])
+ td->freq_offset = nla_get_u32(tb[MT76_TM_ATTR_FREQ_OFFSET]);
+
+ if (tb[MT76_TM_ATTR_STATE]) {
+ state = nla_get_u32(tb[MT76_TM_ATTR_STATE]);
+ if (state > MT76_TM_STATE_MAX)
+ goto out;
+ } else {
+ state = td->state;
+ }
+
+ if (tb[MT76_TM_ATTR_TX_POWER]) {
+ struct nlattr *cur;
+ int idx = 0;
+ int rem;
+
+ nla_for_each_nested(cur, tb[MT76_TM_ATTR_TX_POWER], rem) {
+ if (nla_len(cur) != 1 ||
+ idx >= ARRAY_SIZE(td->tx_power))
+ goto out;
+
+ td->tx_power[idx++] = nla_get_u8(cur);
+ }
+ }
+
+ if (dev->test_ops->set_params) {
+ err = dev->test_ops->set_params(dev, tb, state);
+ if (err)
+ goto out;
+ }
+
+ for (i = MT76_TM_ATTR_STATE; i < ARRAY_SIZE(tb); i++)
+ if (tb[i])
+ mt76_testmode_param_set(td, i);
+
+ err = 0;
+ if (tb[MT76_TM_ATTR_STATE])
+ err = mt76_testmode_set_state(dev, state);
+
+out:
+ mutex_unlock(&dev->mutex);
+
+ return err;
+}
+EXPORT_SYMBOL(mt76_testmode_cmd);
+
+static int
+mt76_testmode_dump_stats(struct mt76_dev *dev, struct sk_buff *msg)
+{
+ struct mt76_testmode_data *td = &dev->test;
+ u64 rx_packets = 0;
+ u64 rx_fcs_error = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(td->rx_stats.packets); i++) {
+ rx_packets += td->rx_stats.packets[i];
+ rx_fcs_error += td->rx_stats.fcs_error[i];
+ }
+
+ if (nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_PENDING, td->tx_pending) ||
+ nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_QUEUED, td->tx_queued) ||
+ nla_put_u32(msg, MT76_TM_STATS_ATTR_TX_DONE, td->tx_done) ||
+ nla_put_u64_64bit(msg, MT76_TM_STATS_ATTR_RX_PACKETS, rx_packets,
+ MT76_TM_STATS_ATTR_PAD) ||
+ nla_put_u64_64bit(msg, MT76_TM_STATS_ATTR_RX_FCS_ERROR, rx_fcs_error,
+ MT76_TM_STATS_ATTR_PAD))
+ return -EMSGSIZE;
+
+ if (dev->test_ops->dump_stats)
+ return dev->test_ops->dump_stats(dev, msg);
+
+ return 0;
+}
+
+int mt76_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *msg,
+ struct netlink_callback *cb, void *data, int len)
+{
+ struct mt76_phy *phy = hw->priv;
+ struct mt76_dev *dev = phy->dev;
+ struct mt76_testmode_data *td = &dev->test;
+ struct nlattr *tb[NUM_MT76_TM_ATTRS] = {};
+ int err = 0;
+ void *a;
+ int i;
+
+ if (!dev->test_ops)
+ return -EOPNOTSUPP;
+
+ if (cb->args[2]++ > 0)
+ return -ENOENT;
+
+ if (data) {
+ err = nla_parse_deprecated(tb, MT76_TM_ATTR_MAX, data, len,
+ mt76_tm_policy, NULL);
+ if (err)
+ return err;
+ }
+
+ mutex_lock(&dev->mutex);
+
+ if (tb[MT76_TM_ATTR_STATS]) {
+ err = -EINVAL;
+
+ a = nla_nest_start(msg, MT76_TM_ATTR_STATS);
+ if (a) {
+ err = mt76_testmode_dump_stats(dev, msg);
+ nla_nest_end(msg, a);
+ }
+
+ goto out;
+ }
+
+ mt76_testmode_init_defaults(dev);
+
+ err = -EMSGSIZE;
+ if (nla_put_u32(msg, MT76_TM_ATTR_STATE, td->state))
+ goto out;
+
+ if (td->mtd_name &&
+ (nla_put_string(msg, MT76_TM_ATTR_MTD_PART, td->mtd_name) ||
+ nla_put_u32(msg, MT76_TM_ATTR_MTD_OFFSET, td->mtd_offset)))
+ goto out;
+
+ if (nla_put_u32(msg, MT76_TM_ATTR_TX_COUNT, td->tx_count) ||
+ nla_put_u32(msg, MT76_TM_ATTR_TX_LENGTH, td->tx_msdu_len) ||
+ nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_MODE, td->tx_rate_mode) ||
+ nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_NSS, td->tx_rate_nss) ||
+ nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_IDX, td->tx_rate_idx) ||
+ nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_SGI, td->tx_rate_sgi) ||
+ nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_LDPC, td->tx_rate_ldpc) ||
+ (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_ANTENNA) &&
+ nla_put_u8(msg, MT76_TM_ATTR_TX_ANTENNA, td->tx_antenna_mask)) ||
+ (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_POWER_CONTROL) &&
+ nla_put_u8(msg, MT76_TM_ATTR_TX_POWER_CONTROL, td->tx_power_control)) ||
+ (mt76_testmode_param_present(td, MT76_TM_ATTR_FREQ_OFFSET) &&
+ nla_put_u8(msg, MT76_TM_ATTR_FREQ_OFFSET, td->freq_offset)))
+ goto out;
+
+ if (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_POWER)) {
+ a = nla_nest_start(msg, MT76_TM_ATTR_TX_POWER);
+ if (!a)
+ goto out;
+
+ for (i = 0; i < ARRAY_SIZE(td->tx_power); i++)
+ if (nla_put_u8(msg, i, td->tx_power[i]))
+ goto out;
+
+ nla_nest_end(msg, a);
+ }
+
+ err = 0;
+
+out:
+ mutex_unlock(&dev->mutex);
+
+ return err;
+}
+EXPORT_SYMBOL(mt76_testmode_dump);
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-06 22:47:51 +0000