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wiphy: React to wiphy name changes

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NL80211_CMD_SET_WIPHY can be used to set various attributes on the wiphy
object in the kernel.  This includes ATTR_WIPHY_NAME among others.  iwd
currently does not parse or store any of the other attributes, so we
react to changes in WIPHY_NAME only.
This commit is contained in:
Denis Kenzior 2017-03-07 11:22:25 -06:00
parent d86b7404fd
commit 74e1b85e54
1 changed files with 23 additions and 9 deletions
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32
src/wiphy.c
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@ -298,13 +298,6 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
while (l_genl_attr_next(attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_WIPHY_NAME:
if (len > sizeof(wiphy->name))
l_warn("Invalid wiphy name attribute");
else
memcpy(wiphy->name, data, len);
break;
case NL80211_ATTR_FEATURE_FLAGS:
if (len != sizeof(uint32_t))
l_warn("Invalid feature flags attribute");
@ -469,15 +462,36 @@ static void wiphy_new_wiphy_event(struct l_genl_msg *msg)
id = *((uint32_t *) data);
if (!l_genl_attr_next(&attr, &type, &len, &data))
return;
if (type != NL80211_ATTR_WIPHY_NAME)
return;
if (len > sizeof(wiphy->name))
return;
wiphy = l_queue_find(wiphy_list, wiphy_match, L_UINT_TO_PTR(id));
if (wiphy) {
l_info("Wiphy %s[%d] already being tracked",
wiphy->name, wiphy->id);
/*
* WIPHY_NAME is a NLA_NUL_STRING, so the kernel
* enforces the data to be null terminated
*/
if (strcmp(wiphy->name, data)) {
struct l_dbus *dbus = dbus_get_bus();
memcpy(wiphy->name, data, len);
l_dbus_property_changed(dbus, wiphy_get_path(wiphy),
IWD_WIPHY_INTERFACE, "Name");
} else
l_info("Wiphy %s[%d] already being tracked",
wiphy->name, wiphy->id);
return;
}
wiphy = l_new(struct wiphy, 1);
wiphy->id = id;
memcpy(wiphy->name, data, len);
wiphy->supported_freqs = scan_freq_set_new();
l_queue_push_head(wiphy_list, wiphy);