mctp_usb_hdr
struct mctp_usb_hdr *hdr;
sizeof(struct mctp_hdr) + sizeof(struct mctp_usb_hdr)) {
pkt_len = hdr->len - sizeof(struct mctp_usb_hdr);
dev->hard_header_len = sizeof(struct mctp_usb_hdr);
struct mctp_usb_hdr *hdr;
#define MCTP_USB_MTU_MAX (U8_MAX - sizeof(struct mctp_usb_hdr))