Commit 145c3d9b authored Mar 16, 2018 by Hemant Kumar Committed by Gerrit - the friendly Code Review server Mar 04, 2020

usb: u_ether: Prevent dropping multicast packet in rmnet ip mode



In rmnet ip mode ftp login response is getting dropped quietly by
ndo_start_xmit call back. Fix this by checking rmnet ip mode in
ndo_start_xmit call back, also increment drop counter to be able
to track the packet drop.

Change-Id: I11ba23673bbd162bea302f8bb1a930c58e84b182
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>

parent 10644ec3

drivers/usb/gadget/function/u_ether.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -790,7 +790,8 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
		}

		/* apply outgoing CDC or RNDIS filters */
		if (skb && !is_promisc(cdc_filter)) {
		if (!test_bit(RMNET_MODE_LLP_IP, &dev->flags) &&
		!is_promisc(cdc_filter)) {
		u8 *dest = skb->data;

		if (is_multicast_ether_addr(dest)) {
		@@ -804,6 +805,7 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
		else
		type = USB_CDC_PACKET_TYPE_ALL_MULTICAST;
		if (!(cdc_filter & type)) {
		dev->net->stats.tx_dropped++;
		dev_kfree_skb_any(skb);
		return NETDEV_TX_OK;
		}