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Commit af7cf1a4 authored by Nadine Toledano's avatar Nadine Toledano Committed by Ido Shayevitz
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usb: gadget: mbim: Enable wMTU parameter value to be runtime configurable 



Adding option to configure the mtu parameter from user space according
the use requirements. The default value is set to 1500.

CRs-Fixed: 503003
Change-Id: I52a483d62e72cf4cce0309754b1fe8e73130c75d
Signed-off-by: default avatarNadine Toledano <nadinet@codeaurora.org>
parent 86155e46

drivers/usb/gadget/android.c

+26 −1
Original line number Diff line number Diff line
@@ -1244,8 +1244,33 @@ static ssize_t mbim_transports_store(struct device *dev, 
static DEVICE_ATTR(mbim_transports, S_IRUGO | S_IWUSR, mbim_transports_show,

				mbim_transports_store);



static ssize_t wMTU_show(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	return snprintf(buf, PAGE_SIZE, "%d\n", ext_mbb_desc.wMTU);

}



static ssize_t wMTU_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t size)

{

	int value;

	if (sscanf(buf, "%d", &value) == 1) {

		if (value < 0 || value > USHRT_MAX)

			pr_err("illegal MTU %d, enter unsigned 16 bits\n",

				value);

		else

			ext_mbb_desc.wMTU = cpu_to_le16(value);

		return size;

	}

	return -EINVAL;

}



static DEVICE_ATTR(wMTU, S_IRUGO | S_IWUSR, wMTU_show,

				wMTU_store);



static struct device_attribute *mbim_function_attributes[] = {

	&dev_attr_mbim_transports,

	&dev_attr_wMTU,

	NULL

};

drivers/usb/gadget/f_mbim.c

+1 −1
Original line number Diff line number Diff line
@@ -233,7 +233,7 @@ static struct usb_cdc_ext_mbb_desc ext_mbb_desc = { 


	.bcdMbbExtendedVersion =	cpu_to_le16(0x0100),

	.bMaxOutstandingCmdMsges =	64,

	.wMTU =	1500,

	.wMTU =	cpu_to_le16(1500),

};



/* the default data interface has no endpoints ... */