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wiphy: Keep track of seen BSS

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This commit is contained in:
Denis Kenzior 2014-10-29 22:50:27 -05:00
parent 39fde81dba
commit b484197470
1 changed files with 50 additions and 1 deletions
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51
src/wiphy.c
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@ -53,6 +53,7 @@ struct netdev {
uint32_t type; uint32_t type;
uint8_t addr[ETH_ALEN]; uint8_t addr[ETH_ALEN];
struct l_queue *bss_list; struct l_queue *bss_list;
struct l_queue *old_bss_list;
struct l_dbus_message *pending; struct l_dbus_message *pending;
}; };
@ -252,6 +253,25 @@ static void setup_device_interface(struct l_dbus_interface *interface)
l_dbus_interface_ro_property(interface, "Name", "s"); l_dbus_interface_ro_property(interface, "Name", "s");
} }
static const char *bss_address_to_string(const struct bss *bss)
{
static char buf[32];
snprintf(buf, sizeof(buf), "%02X:%02X:%02X:%02X:%02X:%02X",
bss->addr[0], bss->addr[1], bss->addr[2],
bss->addr[3], bss->addr[4], bss->addr[5]);
return buf;
}
static bool bss_match(const void *a, const void *b)
{
const struct bss *bss_a = a;
const struct bss *bss_b = b;
return !memcmp(bss_a->addr, bss_b->addr, sizeof(bss_a->addr));
}
static void bss_free(void *data) static void bss_free(void *data)
{ {
struct bss *bss = data; struct bss *bss = data;
@ -278,6 +298,7 @@ static void netdev_free(void *data)
l_debug("Freeing interface %s", netdev->name); l_debug("Freeing interface %s", netdev->name);
l_queue_destroy(netdev->bss_list, bss_free); l_queue_destroy(netdev->bss_list, bss_free);
l_queue_destroy(netdev->old_bss_list, bss_free);
l_free(netdev); l_free(netdev);
} }
@ -379,6 +400,7 @@ static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr)
uint16_t type, len; uint16_t type, len;
const void *data; const void *data;
struct bss *bss; struct bss *bss;
struct bss *old_bss;
bss = l_new(struct bss, 1); bss = l_new(struct bss, 1);
@ -410,7 +432,17 @@ static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr)
} }
} }
l_debug("Frequency for %s is %u", bss->ssid, bss->frequency); old_bss = l_queue_remove_if(netdev->old_bss_list, bss_match, bss);
if (!old_bss) {
l_debug("Found new BSS '%s' with SSID: %s, freq: %u",
bss_address_to_string(bss),
bss->ssid, bss->frequency);
} else {
l_debug("Found existing BSS '%s'",
bss_address_to_string(bss));
}
l_queue_push_head(netdev->bss_list, bss); l_queue_push_head(netdev->bss_list, bss);
return; return;
@ -430,6 +462,11 @@ static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
if (!l_genl_attr_init(&attr, msg)) if (!l_genl_attr_init(&attr, msg))
return; return;
if (!netdev->old_bss_list) {
netdev->old_bss_list = netdev->bss_list;
netdev->bss_list = l_queue_new();
}
while (l_genl_attr_next(&attr, &type, &len, &data)) { while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) { switch (type) {
case NL80211_ATTR_IFINDEX: case NL80211_ATTR_IFINDEX:
@ -462,8 +499,20 @@ static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
static void get_scan_done(void *user) static void get_scan_done(void *user)
{ {
struct netdev *netdev = user; struct netdev *netdev = user;
const struct l_queue_entry *bss_entry;
l_debug("get_scan_done for netdev: %p", netdev); l_debug("get_scan_done for netdev: %p", netdev);
for (bss_entry = l_queue_get_entries(netdev->old_bss_list); bss_entry;
bss_entry = bss_entry->next) {
struct bss *bss = bss_entry->data;
l_debug("Lost BSS '%s' with SSID: %s",
bss_address_to_string(bss), bss->ssid);
}
l_queue_destroy(netdev->old_bss_list, bss_free);
netdev->old_bss_list = NULL;
} }
static void get_scan(struct netdev *netdev) static void get_scan(struct netdev *netdev)