[nrf noup] zephyr: Handle socket close

fixup! [nrf noup] zephyr: Add support for WPA CLI zephyr In some cases (interface is disabled) the control interface socket is closed but as we don't handle EoF control interface keeps receiving zero bytes from the socket continuously and this causes an infinite loop and starving other threads (even SHELL thread). So, treat 0 bytes recv as EoF as its a connected socket and unregister from eloop to avoid infinite loop of recv failures. Fixes SHEL-2320. Signed-off-by: Chaitanya Tata <[email protected]>
nrfconnect · Dec 18, 2023 · d8d1d6d · d8d1d6d
1 parent 92f056a
commit d8d1d6d
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/wpa_supplicant/ctrl_iface_zephyr.c b/wpa_supplicant/ctrl_iface_zephyr.c
@@ -135,6 +135,13 @@ static void wpa_supplicant_ctrl_iface_receive(int sock, void *eloop_ctx,
 		os_free(buf);
 		return;
 	}
+	if (!res) {
+		eloop_unregister_sock(sock, EVENT_TYPE_READ);
+		wpa_printf(MSG_DEBUG, "ctrl_iface: Peer unexpectedly shut down "
+			   "socket");
+		os_free(buf);
+		return;
+	}
 
 	if ((size_t) res > CTRL_IFACE_MAX_LEN) {
 		wpa_printf(MSG_ERROR, "recvform(ctrl_iface): input truncated");