linux-kernel - USB GADGET: have a question about usb2eth

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Message-ID: <637796ED17F7774FB27D6AAE3C6951584A949A31@SZXEMA509-MBS.china.huawei.com>
Date:   Sat, 15 Oct 2016 09:19:33 +0000
From:   Lipengcheng <lpc.li@...ilicon.com>
To:     "balbi@...com" <balbi@...com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: USB GADGET: have a question about usb2eth

Hi,
	I have a question about usb2eth. In the function gen_ndis_set_resp of the rndis.c, the value of *params->filter may be 0x20 from the pc set command; Howerver the value is used cdc_filter = dev->port_usb->cdc_filter in the function eth_start_xmit of the u_ether.c. If we do not judge the RNDIS_PACKET_TYPE_PROMISCUOUS and the value is 0x20, the broadcast packet can not send the pc win7; At the result, the linux ping the win7 is slow an the first.

Best Regard
Pengcheng Li