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usb: netusb: Align NETUSB_MTU & wMaxSegmentSize and increase it to 1522

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As rx_buf & tx_buf are defined with a NETUSB_MTU size, this cause
that the frames over 1500 bytes can not be received and are discarded.

Secondly, as fragmentation is not supported (for UDP and TCP datagram),
increase NETUSB_MTU to the maximum possible ethernet frame size :1522

Signed-off-by: Nicolas LANTZ <nicolas.lantz@ubicore.net>
This commit is contained in:
Nicolas LANTZ 2019-01-30 13:28:38 +01:00 committed by Carles Cufí
parent 968d423a44
commit 766101cf09
2 changed files with 2 additions and 2 deletions
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2
subsys/usb/class/netusb/function_ecm.c
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@ -101,7 +101,7 @@ USBD_CLASS_DESCR_DEFINE(primary, 0) struct usb_cdc_ecm_config cdc_ecm_cfg = {
.bDescriptorSubtype = ETHERNET_FUNC_DESC,
.iMACAddress = 4,
.bmEthernetStatistics = sys_cpu_to_le32(0), /* None */
.wMaxSegmentSize = sys_cpu_to_le16(1514),
.wMaxSegmentSize = sys_cpu_to_le16(NETUSB_MTU),
.wNumberMCFilters = sys_cpu_to_le16(0), /* None */
.bNumberPowerFilters = 0, /* No wake up */
},

2
subsys/usb/class/netusb/netusb.h
View File

@ -8,7 +8,7 @@
* USB definitions
*/
#define NETUSB_MTU 1500
#define NETUSB_MTU 1522
#define CDC_ECM_INT_EP_ADDR 0x83
#define CDC_ECM_IN_EP_ADDR 0x82