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scan: Simplify parsing using nl80211_parse_attrs

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This commit is contained in:
Denis Kenzior 2019-10-16 16:33:40 -05:00
parent a5928f0e4c
commit 269377c92f
1 changed files with 12 additions and 36 deletions
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48
src/scan.c
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@ -43,6 +43,7 @@
#include "src/network.h"
#include "src/knownnetworks.h"
#include "src/nl80211cmd.h"
#include "src/nl80211util.h"
#include "src/util.h"
#include "src/scan.h"
@ -1359,10 +1360,8 @@ static void scan_notify(struct l_genl_msg *msg, void *user_data)
uint16_t type, len;
const void *data;
uint8_t cmd;
uint64_t uninitialized_var(attr_wdev_id);
bool have_wdev_id;
uint32_t uninitialized_var(attr_wiphy);
bool have_wiphy;
uint64_t wdev_id;
uint32_t wiphy_id;
struct scan_context *sc;
bool active_scan = false;
@ -1370,49 +1369,26 @@ static void scan_notify(struct l_genl_msg *msg, void *user_data)
l_debug("Scan notification %s(%u)", nl80211cmd_to_string(cmd), cmd);
if (nl80211_parse_attrs(msg, NL80211_ATTR_WDEV, &wdev_id,
NL80211_ATTR_WIPHY, &wiphy_id,
NL80211_ATTR_UNSPEC) < 0)
return;
sc = l_queue_find(scan_contexts, scan_context_match, &wdev_id);
if (!sc)
return;
if (!l_genl_attr_init(&attr, msg))
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;
}
have_wiphy = true;
attr_wiphy = *((uint32_t *) data);
break;
case NL80211_ATTR_WDEV:
if (len != sizeof(uint64_t)) {
l_warn("Invalid wdev index attribute");
return;
}
have_wdev_id = true;
attr_wdev_id = *((uint64_t *) data);
break;
case NL80211_ATTR_SCAN_SSIDS:
active_scan = true;
break;
}
}
if (!have_wiphy) {
l_warn("Scan results do not contain wiphy attribute");
return;
}
if (!have_wdev_id) {
l_warn("Scan results do not contain wdev attribute");
return;
}
sc = l_queue_find(scan_contexts, scan_context_match, &attr_wdev_id);
if (!sc)
return;
switch (cmd) {
case NL80211_CMD_NEW_SCAN_RESULTS:
{