From: Igor Mitsyanko <igor.mitsyanko...@quantenna.com>
Do not try to cache current operational channel info in driver, this
is a potential source of synchronization issues + driver does not
really need that info.
Introduce GET_CHANNEL command and process it appropriately.
Signed-off-by: Igor Mitsyanko <igor.mitsyanko...@quantenna.com>
---
drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 35 +++++++++------------
drivers/net/wireless/quantenna/qtnfmac/commands.c | 38 +++++++++++++++++++++++
drivers/net/wireless/quantenna/qtnfmac/commands.h | 1 +
drivers/net/wireless/quantenna/qtnfmac/qlink.h | 11 +++++++
4 files changed, 64 insertions(+), 21 deletions(-)
diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 856fa6e..0ef1285 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -793,37 +793,30 @@ qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev
*wdev,
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct net_device *ndev = wdev->netdev;
struct qtnf_vif *vif;
+ int ret;
if (!ndev)
return -ENODEV;
vif = qtnf_netdev_get_priv(wdev->netdev);
- switch (vif->wdev.iftype) {
- case NL80211_IFTYPE_STATION:
- if (vif->sta_state == QTNF_STA_DISCONNECTED) {
- pr_warn("%s: STA disconnected\n", ndev->name);
- return -ENODATA;
- }
- break;
- case NL80211_IFTYPE_AP:
- if (!(vif->bss_status & QTNF_STATE_AP_START)) {
- pr_warn("%s: AP not started\n", ndev->name);
- return -ENODATA;
- }
- break;
- default:
- pr_err("unsupported vif type (%d)\n", vif->wdev.iftype);
- return -ENODATA;
+ ret = qtnf_cmd_get_channel(vif, chandef);
+ if (ret) {
+ pr_err("%s: failed to get channel: %d\n", ndev->name, ret);
+ goto out;
}
- if (!cfg80211_chandef_valid(&mac->chandef)) {
- pr_err("invalid channel settings on %s\n", ndev->name);
- return -ENODATA;
+ if (!cfg80211_chandef_valid(chandef)) {
+ pr_err("%s: bad chan freq1=%u freq2=%u bw=%u\n", ndev->name,
+ chandef->center_freq1, chandef->center_freq2,
+ chandef->width);
+ ret = -ENODATA;
}
- memcpy(chandef, &mac->chandef, sizeof(*chandef));
- return 0;
+ memcpy(&mac->chandef, chandef, sizeof(mac->chandef));
+
+out:
+ return ret;
}
static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c
b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 4206886..806b88b 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2358,3 +2358,41 @@ int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
qtnf_bus_unlock(mac->bus);
return ret;
}
+
+int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef)
+{
+ struct qtnf_bus *bus = vif->mac->bus;
+ const struct qlink_resp_channel_get *resp;
+ struct sk_buff *cmd_skb;
+ struct sk_buff *resp_skb = NULL;
+ u16 res_code = QLINK_CMD_RESULT_OK;
+ int ret;
+
+ cmd_skb = qtnf_cmd_alloc_new_cmdskb(vif->mac->macid, vif->vifid,
+ QLINK_CMD_CHAN_GET,
+ sizeof(struct qlink_cmd));
+ if (unlikely(!cmd_skb))
+ return -ENOMEM;
+
+ qtnf_bus_lock(bus);
+
+ ret = qtnf_cmd_send_with_reply(bus, cmd_skb, &resp_skb, &res_code,
+ sizeof(*resp), NULL);
+
+ qtnf_bus_unlock(bus);
+
+ if (unlikely(ret))
+ goto out;
+
+ if (unlikely(res_code != QLINK_CMD_RESULT_OK)) {
+ ret = -ENODATA;
+ goto out;
+ }
+
+ resp = (const struct qlink_resp_channel_get *)resp_skb->data;
+ qlink_chandef_q2cfg(priv_to_wiphy(vif->mac), &resp->chan, chdef);
+
+out:
+ consume_skb(resp_skb);
+ return ret;
+}
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.h
b/drivers/net/wireless/quantenna/qtnfmac/commands.h
index 783b203..e1bcb83 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.h
@@ -75,5 +75,6 @@ int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16
channel,
struct qtnf_chan_stats *stats);
int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
struct cfg80211_csa_settings *params);
+int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def
*chdef);
#endif /* QLINK_COMMANDS_H_ */
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index 5936854..fb88f3e 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -169,6 +169,7 @@ enum qlink_cmd_type {
QLINK_CMD_REG_NOTIFY = 0x0019,
QLINK_CMD_CHANS_INFO_GET = 0x001A,
QLINK_CMD_CHAN_SWITCH = 0x001B,
+ QLINK_CMD_CHAN_GET = 0x001C,
QLINK_CMD_CONFIG_AP = 0x0020,
QLINK_CMD_START_AP = 0x0021,
QLINK_CMD_STOP_AP = 0x0022,
@@ -694,6 +695,16 @@ struct qlink_resp_get_chan_stats {
u8 info[0];
} __packed;
+/**
+ * struct qlink_resp_channel_get - response for QLINK_CMD_CHAN_GET command
+ *
+ * @chan: definition of current operating channel.
+ */
+struct qlink_resp_channel_get {
+ struct qlink_resp rhdr;
+ struct qlink_chandef chan;
+} __packed;
+
/* QLINK Events messages related definitions
*/
--
2.9.5
