45 #define TBNET_L0_PORT_NUM(route) ((route) & GENMASK(5, 0))
56  * supported then @frame_id is filled, otherwise it stays %0.
88 #define TBIP_HDR_LENGTH_MASK		GENMASK(5, 0)
147  * @xd: XDomain the service blongs to
178 	struct tb_xdomain *xd;  member
202 	UUID_INIT(0xc66189ca, 0x1cce, 0x4195,
203 		  0xbd, 0xb8, 0x49, 0x59, 0x2e, 0x5f, 0x5a, 0x4f);
207 	UUID_INIT(0x798f589e, 0x3616, 0x8a47,
208 		  0x97, 0xc6, 0x56, 0x64, 0xa9, 0x20, 0xc8, 0xdd);
236 	struct tb_xdomain *xd = net->xd;  in tbnet_login_response()  local
238 	memset(&reply, 0, sizeof(reply));  in tbnet_login_response()
239 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_login_response()
240 			  xd->remote_uuid, TBIP_LOGIN_RESPONSE, sizeof(reply),  in tbnet_login_response()
245 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_login_response()
253 	struct tb_xdomain *xd = net->xd;  in tbnet_login_request()  local
255 	memset(&request, 0, sizeof(request));  in tbnet_login_request()
256 	tbnet_fill_header(&request.hdr, xd->route, sequence, xd->local_uuid,  in tbnet_login_request()
257 			  xd->remote_uuid, TBIP_LOGIN, sizeof(request),  in tbnet_login_request()
263 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_login_request()
273 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_response()  local
275 	memset(&reply, 0, sizeof(reply));  in tbnet_logout_response()
276 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_logout_response()
277 			  xd->remote_uuid, TBIP_STATUS, sizeof(reply),  in tbnet_logout_response()
279 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_logout_response()
287 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_request()  local
289 	memset(&request, 0, sizeof(request));  in tbnet_logout_request()
290 	tbnet_fill_header(&request.hdr, xd->route, 0, xd->local_uuid,  in tbnet_logout_request()
291 			  xd->remote_uuid, TBIP_LOGOUT, sizeof(request),  in tbnet_logout_request()
294 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_logout_request()
326 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_free_buffers()
338 			order = 0;  in tbnet_free_buffers()
354 	ring->cons = 0;  in tbnet_free_buffers()
355 	ring->prod = 0;  in tbnet_free_buffers()
370 		while (send_logout && retries-- > 0) {  in tbnet_tear_down()
381 		ret = tb_xdomain_disable_paths(net->xd,  in tbnet_tear_down()
389 		tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_tear_down()
390 		net->remote_transmit_path = 0;  in tbnet_tear_down()
393 	net->login_retries = 0;  in tbnet_tear_down()
405 	int ret = 0;  in tbnet_handle_packet()
411 		return 0;  in tbnet_handle_packet()
412 	if (!uuid_equal(&pkg->hdr.initiator_uuid, net->xd->remote_uuid))  in tbnet_handle_packet()
413 		return 0;  in tbnet_handle_packet()
414 	if (!uuid_equal(&pkg->hdr.target_uuid, net->xd->local_uuid))  in tbnet_handle_packet()
415 		return 0;  in tbnet_handle_packet()
419 	if (route != net->xd->route)  in tbnet_handle_packet()
420 		return 0;  in tbnet_handle_packet()
444 				net->login_retries = 0;  in tbnet_handle_packet()
446 						   &net->login_work, 0);  in tbnet_handle_packet()
461 		return 0;  in tbnet_handle_packet()
489 		/* Allocate page (order > 0) so that it can hold maximum  in tbnet_alloc_rx_buffers()
499 		dma_addr = dma_map_page(dma_dev, tf->page, 0,  in tbnet_alloc_rx_buffers()
514 	return 0;  in tbnet_alloc_rx_buffers()
534 	tf->frame.size = 0;  in tbnet_get_tx_buffer()
561 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_alloc_tx_buffers()
571 		dma_addr = dma_map_page(dma_dev, tf->page, 0, TBNET_FRAME_SIZE,  in tbnet_alloc_tx_buffers()
587 	ring->cons = 0;  in tbnet_alloc_tx_buffers()
590 	return 0;  in tbnet_alloc_tx_buffers()
609 	ret = tb_xdomain_alloc_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
618 	ret = tb_xdomain_enable_paths(net->xd, net->local_transmit_path,  in tbnet_connected_work()
647 	tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
668 		net->login_retries = 0;  in tbnet_login_work()
744 	if (frame_count == 0 || frame_count > TBNET_RING_SIZE / 4) {  in tbnet_check_frame()
748 	if (frame_index != 0) {  in tbnet_check_frame()
761 	unsigned int rx_packets = 0;  in tbnet_poll()
779 			cleaned_count = 0;  in tbnet_poll()
867 	struct tb_xdomain *xd = net->xd;  in tbnet_open()  local
874 	ring = tb_ring_alloc_tx(xd->tb->nhi, -1, TBNET_RING_SIZE,  in tbnet_open()
882 	hopid = tb_xdomain_alloc_out_hopid(xd, -1);  in tbnet_open()
883 	if (hopid < 0) {  in tbnet_open()
894 	ring = tb_ring_alloc_rx(xd->tb->nhi, -1, TBNET_RING_SIZE,  in tbnet_open()
895 				RING_FLAG_FRAME, 0, sof_mask, eof_mask,  in tbnet_open()
908 	return 0;  in tbnet_open()
923 	tb_xdomain_release_out_hopid(net->xd, net->local_transmit_path);  in tbnet_stop()
927 	return 0;  in tbnet_stop()
933 	struct thunderbolt_ip_frame_header *hdr = page_address(frames[0]->page);  in tbnet_xmit_csum_and_map()
946 		for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
975 		*ipcso = 0;  in tbnet_xmit_csum_and_map()
987 					    ip_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
988 					    ip_hdr(skb)->protocol, 0);  in tbnet_xmit_csum_and_map()
992 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
993 					  IPPROTO_TCP, 0);  in tbnet_xmit_csum_and_map()
998 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
999 					  ipv6_hdr(skb)->nexthdr, 0);  in tbnet_xmit_csum_and_map()
1007 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1014 		offset = 0;  in tbnet_xmit_csum_and_map()
1022 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1049 	unsigned int frag = 0;  in tbnet_start_xmit()
1051 	u32 frame_index = 0;  in tbnet_start_xmit()
1103 			} else if (unlikely(size_left > 0)) {  in tbnet_start_xmit()
1106 		} while (size_left > 0);  in tbnet_start_xmit()
1139 		} else if (unlikely(data_len > 0)) {  in tbnet_start_xmit()
1152 	for (i = 0; i < frame_index + 1; i++)  in tbnet_start_xmit()
1204 	const struct tb_xdomain *xd = net->xd;  in tbnet_generate_mac()  local
1208 	phy_port = tb_phy_port_from_link(TBNET_L0_PORT_NUM(xd->route));  in tbnet_generate_mac()
1211 	dev->dev_addr[0] = phy_port << 4 | 0x02;  in tbnet_generate_mac()
1212 	hash = jhash2((u32 *)xd->local_uuid, 4, 0);  in tbnet_generate_mac()
1214 	hash = jhash2((u32 *)xd->local_uuid, 4, hash);  in tbnet_generate_mac()
1215 	dev->dev_addr[5] = hash & 0xff;  in tbnet_generate_mac()
1220 	struct tb_xdomain *xd = tb_service_parent(svc);  in tbnet_probe()  local
1236 	atomic_set(&net->command_id, 0);  in tbnet_probe()
1237 	atomic_set(&net->frame_id, 0);  in tbnet_probe()
1240 	net->xd = xd;  in tbnet_probe()
1285 	return 0;  in tbnet_probe()
1314 	return 0;  in tbnet_suspend()
1330 	return 0;  in tbnet_resume()
1366 	/* Currently only announce support for match frags ID (bit 1). Bit 0  in tbnet_init()