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nl80211: Work around error case prints for nl_recvmsgs on Android

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I got the below prints on a particular Android platform:

I/wpa_supplicant( 2637): nl80211: send_and_recv->nl_recvmsgs failed: 20
I/wpa_supplicant( 2637): nl80211: send_and_recv->nl_recvmsgs failed: 20

In JellyBean libnl_2 code, I see that the nl_recvmsgs returns postive values
too. In some cases, nl_recvmgs return the output of nl_recv function. nl_recv
function can return Number of bytes read, 0 or a negative error code.

Looks like this positive return value for nl_recvmsgs may be specific to
Android. While this is not how the API is supposed to work, this does no
harm with upstream libnl which returns only 0 or -1 from the function.

Signed-off-by: Jithu Jance <jithu@broadcom.com>
This commit is contained in:
Jithu Jance 2014-05-23 11:21:07 +05:30 committed by Jouni Malinen
parent 8f614cd7a7
commit d3d048310c
1 changed files with 3 additions and 3 deletions
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6
src/drivers/driver_nl80211.c
View file

@ -652,7 +652,7 @@ static int send_and_recv(struct nl80211_global *global,
while (err > 0) {
int res = nl_recvmsgs(nl_handle, cb);
if (res) {
if (res < 0) {
wpa_printf(MSG_INFO,
"nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
@ -910,7 +910,7 @@ static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
res = nl_recvmsgs(handle, w->nl_cb);
if (res) {
if (res < 0) {
wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
}
@ -3276,7 +3276,7 @@ static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
res = nl_recvmsgs(handle, cb);
if (res) {
if (res < 0) {
wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
__func__, res);
}