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core: Trigger initial passive scan when SSID is provided

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This commit is contained in:
Marcel Holtmann 2014-08-08 22:21:30 -07:00
parent c13d50fab9
commit 9c7c23ce90
1 changed files with 96 additions and 0 deletions
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96
src/wiphy.c
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@ -97,6 +97,74 @@ static bool wiphy_match(const void *a, const void *b)
return (wiphy->id == id);
}
static void trigger_scan_callback(struct l_genl_msg *msg, void *user_data)
{
struct wiphy *wiphy = user_data;
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
}
l_debug("Scan triggered for wiphy %s", wiphy->name);
}
static void trigger_scan(struct wiphy *wiphy)
{
struct netdev *netdev;
struct l_genl_msg *msg;
if (!network_ssid)
return;
netdev = l_queue_peek_head(wiphy->netdev_list);
if (!netdev)
return;
msg = l_genl_msg_new_sized(NL80211_CMD_TRIGGER_SCAN, 16);
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
l_genl_family_send(nl80211, msg, trigger_scan_callback, wiphy, NULL);
l_genl_msg_unref(msg);
}
static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
{
struct wiphy *wiphy = user_data;
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
}
l_debug("Scan result for wiphy %s", wiphy->name);
}
static void get_scan(struct wiphy *wiphy)
{
struct netdev *netdev;
struct l_genl_msg *msg;
if (!network_ssid)
return;
netdev = l_queue_peek_head(wiphy->netdev_list);
if (!netdev)
return;
msg = l_genl_msg_new_sized(NL80211_CMD_GET_SCAN, 8);
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
l_genl_family_dump(nl80211, msg, get_scan_callback, wiphy, NULL);
l_genl_msg_unref(msg);
}
static void interface_dump_callback(struct l_genl_msg *msg, void *user_data)
{
struct wiphy *wiphy = NULL;
@ -196,6 +264,8 @@ static void interface_dump_callback(struct l_genl_msg *msg, void *user_data)
netdev->type = iftype;
l_debug("Found interface %s", netdev->name);
trigger_scan(wiphy);
}
static void wiphy_dump_callback(struct l_genl_msg *msg, void *user_data)
@ -294,6 +364,7 @@ static void wiphy_config_notify(struct l_genl_msg *msg, void *user_data)
static void wiphy_scan_notify(struct l_genl_msg *msg, void *user_data)
{
struct wiphy *wiphy = NULL;
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
@ -307,6 +378,31 @@ static void wiphy_scan_notify(struct l_genl_msg *msg, void *user_data)
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_WIPHY:
if (len != sizeof(uint32_t)) {
l_warn("Invalid wiphy attribute");
return;
}
wiphy = l_queue_find(wiphy_list, wiphy_match,
L_UINT_TO_PTR(*((uint32_t *) data)));
if (!wiphy) {
l_warn("No wiphy structure found");
return;
}
break;
}
}
if (!wiphy) {
l_warn("Scan notification is missing wiphy attribute");
return;
}
if (cmd == NL80211_CMD_NEW_SCAN_RESULTS) {
get_scan(wiphy);
return;
}
}