Commit aeacf540 authored Sep 18, 2014 by Badhri Jagan Sridharan Committed by Sivasri Kumar Vanka Mar 04, 2020

ndis: Add debug support to disable RNDIS Multipacket Feature

This change adds module param which allows to disable RNDIS
Multi-packet Feature (Aggregation support in Downlink path)
as this feature is enabled by default.

To disable use this param before moving to RNDIS Composition:
echo 1 > /sys/module/usb_f_rndis/parameters/rndis_multipacket_dl_disable

Also counts errors as Rx errors if received RNDIS packets
are not following RNDIS message format as those packets are being
discarded.

Change-Id: I764430da78f2204af92e14bb279c11b24c7e4c67
Git-Commit: 8424b3e7a57903cd6fd6d6f18f9999ec22569a4a
Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.9


Signed-off-by: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>

parent c44ed0b1

drivers/usb/gadget/function/f_rndis.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -484,6 +484,8 @@ static void rndis_command_complete(struct usb_ep ep, struct usb_request req)
		__func__, buf->MaxTransferSize,
		rndis->port.multi_pkt_xfer ? "enabled" :
		"disabled");
		if (rndis_multipacket_dl_disable)
		rndis->port.multi_pkt_xfer = 0;
		}
		// spin_unlock(&dev->lock);
		}

drivers/usb/gadget/function/u_ether.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -317,6 +317,10 @@ static void rx_complete(struct usb_ep ep, struct usb_request req)
		status = dev->unwrap(dev->port_usb,
		skb,
		&dev->rx_frames);
		if (status == -EINVAL)
		dev->net->stats.rx_errors++;
		else if (status == -EOVERFLOW)
		dev->net->stats.rx_over_errors++;
		} else {
		dev_kfree_skb_any(skb);
		status = -ENOTCONN;