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qtnfmac: implement cfg80211 dump_survey handler 

This patch implements cfg80211 dump_survey handler enabling
per-channel survey data reports.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Avinash Patil <avinashp@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Sergey Matyukevich 2017-07-28 02:06:46 +03:00 committed by Kalle Valo
parent 9ef7509505
commit 7c04b43984
5 changed files with 217 additions and 1 deletions
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69
drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
View File

@ -677,6 +677,72 @@ qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
return 0;
}
static int
qtnf_dump_survey(struct wiphy *wiphy, struct net_device *dev,
int idx, struct survey_info *survey)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
struct qtnf_chan_stats stats;
int ret;
sband = wiphy->bands[NL80211_BAND_2GHZ];
if (sband && idx >= sband->n_channels) {
idx -= sband->n_channels;
sband = NULL;
}
if (!sband)
sband = wiphy->bands[NL80211_BAND_5GHZ];
if (!sband || idx >= sband->n_channels)
return -ENOENT;
chan = &sband->channels[idx];
memset(&stats, 0, sizeof(stats));
survey->channel = chan;
survey->filled = 0x0;
ret = qtnf_cmd_get_chan_stats(mac, chan->hw_value, &stats);
switch (ret) {
case 0:
if (unlikely(stats.chan_num != chan->hw_value)) {
pr_err("received stats for channel %d instead of %d\n",
stats.chan_num, chan->hw_value);
ret = -EINVAL;
break;
}
survey->filled = SURVEY_INFO_TIME |
SURVEY_INFO_TIME_SCAN |
SURVEY_INFO_TIME_BUSY |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_TX |
SURVEY_INFO_NOISE_DBM;
survey->time_scan = stats.cca_try;
survey->time = stats.cca_try;
survey->time_tx = stats.cca_tx;
survey->time_rx = stats.cca_rx;
survey->time_busy = stats.cca_busy;
survey->noise = stats.chan_noise;
break;
case -ENOENT:
pr_debug("no stats for channel %u\n", chan->hw_value);
ret = 0;
break;
default:
pr_debug("failed to get chan(%d) stats from card\n",
chan->hw_value);
ret = -EINVAL;
break;
}
return ret;
}
static struct cfg80211_ops qtn_cfg80211_ops = {
.add_virtual_intf = qtnf_add_virtual_intf,
.change_virtual_intf = qtnf_change_virtual_intf,
@ -697,7 +763,8 @@ static struct cfg80211_ops qtn_cfg80211_ops = {
.set_default_mgmt_key = qtnf_set_default_mgmt_key,
.scan = qtnf_scan,
.connect = qtnf_connect,
.disconnect = qtnf_disconnect
.disconnect = qtnf_disconnect,
.dump_survey = qtnf_dump_survey
};
static void qtnf_cfg80211_reg_notifier(struct wiphy *wiphy_in,

107
drivers/net/wireless/quantenna/qtnfmac/commands.c
View File

@ -1333,6 +1333,62 @@ static int qtnf_cmd_resp_proc_phy_params(struct qtnf_wmac *mac,
return 0;
}
static int
qtnf_cmd_resp_proc_chan_stat_info(struct qtnf_chan_stats *stats,
const u8 *payload, size_t payload_len)
{
struct qlink_chan_stats *qlink_stats;
const struct qlink_tlv_hdr *tlv;
size_t tlv_full_len;
u16 tlv_value_len;
u16 tlv_type;
tlv = (struct qlink_tlv_hdr *)payload;
while (payload_len >= sizeof(struct qlink_tlv_hdr)) {
tlv_type = le16_to_cpu(tlv->type);
tlv_value_len = le16_to_cpu(tlv->len);
tlv_full_len = tlv_value_len + sizeof(struct qlink_tlv_hdr);
if (tlv_full_len > payload_len) {
pr_warn("malformed TLV 0x%.2X; LEN: %u\n",
tlv_type, tlv_value_len);
return -EINVAL;
}
switch (tlv_type) {
case QTN_TLV_ID_CHANNEL_STATS:
if (unlikely(tlv_value_len != sizeof(*qlink_stats))) {
pr_err("invalid CHANNEL_STATS entry size\n");
return -EINVAL;
}
qlink_stats = (void *)tlv->val;
stats->chan_num = le32_to_cpu(qlink_stats->chan_num);
stats->cca_tx = le32_to_cpu(qlink_stats->cca_tx);
stats->cca_rx = le32_to_cpu(qlink_stats->cca_rx);
stats->cca_busy = le32_to_cpu(qlink_stats->cca_busy);
stats->cca_try = le32_to_cpu(qlink_stats->cca_try);
stats->chan_noise = qlink_stats->chan_noise;
pr_debug("chan(%u) try(%u) busy(%u) noise(%d)\n",
stats->chan_num, stats->cca_try,
stats->cca_busy, stats->chan_noise);
break;
default:
pr_warn("Unknown TLV type: %#x\n",
le16_to_cpu(tlv->type));
}
payload_len -= tlv_full_len;
tlv = (struct qlink_tlv_hdr *)(tlv->val + tlv_value_len);
}
if (payload_len) {
pr_warn("malformed TLV buf; bytes left: %zu\n", payload_len);
return -EINVAL;
}
return 0;
}
int qtnf_cmd_get_mac_info(struct qtnf_wmac *mac)
{
struct sk_buff *cmd_skb, *resp_skb = NULL;
@ -2176,3 +2232,54 @@ int qtnf_cmd_reg_notify(struct qtnf_bus *bus, struct regulatory_request *req)
return ret;
}
int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel,
struct qtnf_chan_stats *stats)
{
struct sk_buff *cmd_skb, *resp_skb = NULL;
struct qlink_cmd_get_chan_stats *cmd;
struct qlink_resp_get_chan_stats *resp;
size_t var_data_len;
u16 res_code = QLINK_CMD_RESULT_OK;
int ret = 0;
cmd_skb = qtnf_cmd_alloc_new_cmdskb(mac->macid, QLINK_VIFID_RSVD,
QLINK_CMD_CHAN_STATS,
sizeof(*cmd));
if (!cmd_skb)
return -ENOMEM;
qtnf_bus_lock(mac->bus);
cmd = (struct qlink_cmd_get_chan_stats *)cmd_skb->data;
cmd->channel = cpu_to_le16(channel);
ret = qtnf_cmd_send_with_reply(mac->bus, cmd_skb, &resp_skb, &res_code,
sizeof(*resp), &var_data_len);
if (unlikely(ret)) {
qtnf_bus_unlock(mac->bus);
return ret;
}
if (unlikely(res_code != QLINK_CMD_RESULT_OK)) {
switch (res_code) {
case QLINK_CMD_RESULT_ENOTFOUND:
ret = -ENOENT;
break;
default:
pr_err("cmd exec failed: 0x%.4X\n", res_code);
ret = -EFAULT;
break;
}
goto out;
}
resp = (struct qlink_resp_get_chan_stats *)resp_skb->data;
ret = qtnf_cmd_resp_proc_chan_stat_info(stats, resp->info,
var_data_len);
out:
qtnf_bus_unlock(mac->bus);
consume_skb(resp_skb);
return ret;
}

2
drivers/net/wireless/quantenna/qtnfmac/commands.h
View File

@ -71,5 +71,7 @@ int qtnf_cmd_send_disconnect(struct qtnf_vif *vif,
int qtnf_cmd_send_updown_intf(struct qtnf_vif *vif,
bool up);
int qtnf_cmd_reg_notify(struct qtnf_bus *bus, struct regulatory_request *req);
int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel,
struct qtnf_chan_stats *stats);
#endif /* QLINK_COMMANDS_H_ */

9
drivers/net/wireless/quantenna/qtnfmac/core.h
View File

@ -124,6 +124,15 @@ struct qtnf_mac_info {
size_t n_limits;
};
struct qtnf_chan_stats {
u32 chan_num;
u32 cca_tx;
u32 cca_rx;
u32 cca_busy;
u32 cca_try;
s8 chan_noise;
};
struct qtnf_wmac {
u8 macid;
u8 wiphy_registered;

31
drivers/net/wireless/quantenna/qtnfmac/qlink.h
View File

@ -164,6 +164,7 @@ enum qlink_cmd_type {
QLINK_CMD_CHANGE_STA = 0x0051,
QLINK_CMD_DEL_STA = 0x0052,
QLINK_CMD_SCAN = 0x0053,
QLINK_CMD_CHAN_STATS = 0x0054,
QLINK_CMD_CONNECT = 0x0060,
QLINK_CMD_DISCONNECT = 0x0061,
};
@ -433,6 +434,16 @@ struct qlink_cmd_chans_info_get {
u8 band;
} __packed;
/**
* struct qlink_cmd_get_chan_stats - data for QLINK_CMD_CHAN_STATS command
*
* @channel: channel number according to 802.11 17.3.8.3.2 and Annex J
*/
struct qlink_cmd_get_chan_stats {
struct qlink_cmd chdr;
__le16 channel;
} __packed;
/**
* enum qlink_reg_initiator - Indicates the initiator of a reg domain request
*
@ -635,6 +646,16 @@ struct qlink_resp_phy_params {
u8 info[0];
} __packed;
/**
* struct qlink_resp_get_chan_stats - response for QLINK_CMD_CHAN_STATS cmd
*
* @info: variable-length channel info.
*/
struct qlink_resp_get_chan_stats {
struct qlink_cmd rhdr;
u8 info[0];
} __packed;
/* QLINK Events messages related definitions
*/
@ -807,6 +828,7 @@ enum qlink_tlv_id {
QTN_TLV_ID_COVERAGE_CLASS = 0x0213,
QTN_TLV_ID_IFACE_LIMIT = 0x0214,
QTN_TLV_ID_NUM_IFACE_COMB = 0x0215,
QTN_TLV_ID_CHANNEL_STATS = 0x0216,
QTN_TLV_ID_STA_BASIC_COUNTERS = 0x0300,
QTN_TLV_ID_STA_GENERIC_INFO = 0x0301,
QTN_TLV_ID_KEY = 0x0302,
@ -1008,4 +1030,13 @@ struct qlink_auth_encr {
u8 control_port_no_encrypt;
} __packed;
struct qlink_chan_stats {
__le32 chan_num;
__le32 cca_tx;
__le32 cca_rx;
__le32 cca_busy;
__le32 cca_try;
s8 chan_noise;
} __packed;
#endif /* _QTN_QLINK_H_ */