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nl80211: Increase netlink receive buffer size

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libnl uses a pretty small buffer (32 kB that gets converted to 64 kB) by
default. It is possible to hit that limit in some cases where operations
are blocked, e.g., with a burst of Deauthentication frames to hostapd
and STA entry deletion. Try to increase the buffer to make this less
likely to occur.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2015-01-22 13:51:15 +02:00 committed by Jouni Malinen
parent a60dbbce44
commit 630b3230c8
1 changed files with 14 additions and 0 deletions
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14
src/drivers/driver_nl80211.c
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@ -132,6 +132,20 @@ static void nl80211_register_eloop_read(struct nl_handle **handle,
eloop_sock_handler handler,
void *eloop_data)
{
/*
* libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
* by default. It is possible to hit that limit in some cases where
* operations are blocked, e.g., with a burst of Deauthentication frames
* to hostapd and STA entry deletion. Try to increase the buffer to make
* this less likely to occur.
*/
if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
wpa_printf(MSG_DEBUG,
"nl80211: Could not set nl_socket RX buffer size: %s",
strerror(errno));
/* continue anyway with the default (smaller) buffer */
}
nl_socket_set_nonblocking(*handle);
eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
eloop_data, *handle);