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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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netdev: add a channel switch event
If the connected BSS announces that it is switching operating channel, the kernel may emit the NL80211_CMD_CH_SWTICH_NOTIFY event when the switch is complete. Add a new netdev event NETDEV_EVENT_CHANNEL_SWITCHED to signal to interested modules that the connected BSS has changed channel. The event carries a pointer to the new channel's frequency.
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parent
f50a51d943
commit
5eb0b7ca8e
39
src/netdev.c
39
src/netdev.c
@ -4536,6 +4536,42 @@ failed:
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}
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static void netdev_channel_switch_event(struct l_genl_msg *msg,
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struct netdev *netdev)
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{
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struct l_genl_attr attr;
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uint16_t type, len;
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const void *data;
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uint32_t *freq = NULL;
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l_debug("");
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if (!l_genl_attr_init(&attr, msg))
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return;
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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switch (type) {
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case NL80211_ATTR_WIPHY_FREQ:
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if (len != 4)
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continue;
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freq = (uint32_t *) data;
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break;
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}
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}
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if (!freq)
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return;
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l_debug("Channel switch event, frequency: %u", *freq);
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if (!netdev->event_filter)
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return;
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netdev->event_filter(netdev, NETDEV_EVENT_CHANNEL_SWITCHED, freq,
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netdev->user_data);
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}
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static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
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{
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struct netdev *netdev = NULL;
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@ -4561,6 +4597,9 @@ static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
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case NL80211_CMD_ROAM:
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netdev_roam_event(msg, netdev);
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break;
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case NL80211_CMD_CH_SWITCH_NOTIFY:
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netdev_channel_switch_event(msg, netdev);
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break;
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case NL80211_CMD_CONNECT:
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netdev_connect_event(msg, netdev);
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break;
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@ -43,6 +43,7 @@ enum netdev_event {
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NETDEV_EVENT_ASSOCIATING,
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NETDEV_EVENT_ROAMING,
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NETDEV_EVENT_ROAMED,
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NETDEV_EVENT_CHANNEL_SWITCHED,
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NETDEV_EVENT_DISCONNECT_BY_AP,
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NETDEV_EVENT_DISCONNECT_BY_SME,
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NETDEV_EVENT_RSSI_THRESHOLD_LOW,
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