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netdev: added station watch

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For Ad-Hoc networks, the kernel takes care of auth/assoc
and issues a NEW_STATION event when that is complete. This
provides a way to notify when NEW_STATION events occur as
well as forward the MAC of the station to Ad-Hoc.

The two new API's added:
 - netdev_station_watch_add()
 - netdev_station_watch_remove()
This commit is contained in:
James Prestwood 2018-07-16 15:29:15 -07:00 committed by Denis Kenzior
parent 54cd428c94
commit 42fe517d4e
2 changed files with 62 additions and 0 deletions
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54
src/netdev.c
View File

@ -103,6 +103,8 @@ struct netdev {
struct watchlist frame_watches;
struct watchlist station_watches;
struct l_io *pae_io; /* for drivers without EAPoL over NL80211 */
bool connected : 1;
@ -589,6 +591,7 @@ static void netdev_free(void *data)
device_remove(netdev->device);
watchlist_destroy(&netdev->event_watches);
watchlist_destroy(&netdev->frame_watches);
watchlist_destroy(&netdev->station_watches);
l_io_destroy(netdev->pae_io);
@ -2988,6 +2991,39 @@ static void netdev_unprot_disconnect_event(struct l_genl_msg *msg,
netdev_sa_query_timeout, netdev, NULL);
}
static void netdev_station_event(struct l_genl_msg *msg,
struct netdev *netdev, bool added)
{
struct l_genl_attr attr;
uint16_t type;
uint16_t len;
const void *data;
const uint8_t *mac = NULL;
if (netdev_get_iftype(netdev) != NETDEV_IFTYPE_ADHOC)
return;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_MAC:
mac = data;
break;
}
}
if (!mac) {
l_error("%s station event did not include MAC attribute",
added ? "new" : "del");
return;
}
WATCHLIST_NOTIFY(&netdev->station_watches,
netdev_station_watch_func_t, netdev, mac, added);
}
static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
{
struct netdev *netdev = NULL;
@ -3047,6 +3083,12 @@ static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
case NL80211_CMD_UNPROT_DISASSOCIATE:
netdev_unprot_disconnect_event(msg, netdev);
break;
case NL80211_CMD_NEW_STATION:
netdev_station_event(msg, netdev, true);
break;
case NL80211_CMD_DEL_STATION:
netdev_station_event(msg, netdev, false);
break;
}
}
@ -4044,6 +4086,7 @@ static void netdev_create_from_genl(struct l_genl_msg *msg)
watchlist_init(&netdev->event_watches, NULL);
watchlist_init(&netdev->frame_watches, &netdev_frame_watch_ops);
watchlist_init(&netdev->station_watches, NULL);
l_queue_push_tail(netdev_list, netdev);
@ -4173,6 +4216,17 @@ bool netdev_watch_remove(struct netdev *netdev, uint32_t id)
return watchlist_remove(&netdev->event_watches, id);
}
uint32_t netdev_station_watch_add(struct netdev *netdev,
netdev_station_watch_func_t func, void *user_data)
{
return watchlist_add(&netdev->station_watches, func, user_data, NULL);
}
bool netdev_station_watch_remove(struct netdev *netdev, uint32_t id)
{
return watchlist_remove(&netdev->station_watches, id);
}
bool netdev_init(struct l_genl_family *in,
const char *whitelist, const char *blacklist)
{

8
src/netdev.h
View File

@ -91,6 +91,9 @@ typedef void (*netdev_frame_watch_func_t)(struct netdev *netdev,
const struct mmpdu_header *frame,
const void *body, size_t body_len,
void *user_data);
typedef void (*netdev_station_watch_func_t)(struct netdev *netdev,
const uint8_t *mac, bool added,
void *user_data);
struct wiphy *netdev_get_wiphy(struct netdev *netdev);
const uint8_t *netdev_get_address(struct netdev *netdev);
@ -157,6 +160,11 @@ uint32_t netdev_watch_add(struct netdev *netdev, netdev_watch_func_t func,
void *user_data);
bool netdev_watch_remove(struct netdev *netdev, uint32_t id);
uint32_t netdev_station_watch_add(struct netdev *netdev,
netdev_station_watch_func_t func, void *user_data);
bool netdev_station_watch_remove(struct netdev *netdev, uint32_t id);
bool netdev_init(struct l_genl_family *in,
const char *whitelist, const char *blacklist);
bool netdev_exit(void);