36 #define TBNET_E2E		BIT(0)
49 #define TBNET_L0_PORT_NUM(route) ((route) & GENMASK(5, 0))
60  * supported then @frame_id is filled, otherwise it stays %0.
92 #define TBIP_HDR_LENGTH_MASK		GENMASK(5, 0)
151  * @xd: XDomain the service belongs to
182 	struct tb_xdomain *xd;  member
206 	UUID_INIT(0xc66189ca, 0x1cce, 0x4195,
207 		  0xbd, 0xb8, 0x49, 0x59, 0x2e, 0x5f, 0x5a, 0x4f);
211 	UUID_INIT(0x798f589e, 0x3616, 0x8a47,
212 		  0x97, 0xc6, 0x56, 0x64, 0xa9, 0x20, 0xc8, 0xdd);
244 	struct tb_xdomain *xd = net->xd;  in tbnet_login_response()  local
246 	memset(&reply, 0, sizeof(reply));  in tbnet_login_response()
247 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_login_response()
248 			  xd->remote_uuid, TBIP_LOGIN_RESPONSE, sizeof(reply),  in tbnet_login_response()
253 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_login_response()
261 	struct tb_xdomain *xd = net->xd;  in tbnet_login_request()  local
263 	memset(&request, 0, sizeof(request));  in tbnet_login_request()
264 	tbnet_fill_header(&request.hdr, xd->route, sequence, xd->local_uuid,  in tbnet_login_request()
265 			  xd->remote_uuid, TBIP_LOGIN, sizeof(request),  in tbnet_login_request()
271 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_login_request()
281 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_response()  local
283 	memset(&reply, 0, sizeof(reply));  in tbnet_logout_response()
284 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_logout_response()
285 			  xd->remote_uuid, TBIP_STATUS, sizeof(reply),  in tbnet_logout_response()
287 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_logout_response()
295 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_request()  local
297 	memset(&request, 0, sizeof(request));  in tbnet_logout_request()
298 	tbnet_fill_header(&request.hdr, xd->route, 0, xd->local_uuid,  in tbnet_logout_request()
299 			  xd->remote_uuid, TBIP_LOGOUT, sizeof(request),  in tbnet_logout_request()
302 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_logout_request()
338 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_free_buffers()
350 			order = 0;  in tbnet_free_buffers()
368 	ring->cons = 0;  in tbnet_free_buffers()
369 	ring->prod = 0;  in tbnet_free_buffers()
384 		while (send_logout && retries-- > 0) {  in tbnet_tear_down()
397 		ret = tb_xdomain_disable_paths(net->xd,  in tbnet_tear_down()
405 		tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_tear_down()
406 		net->remote_transmit_path = 0;  in tbnet_tear_down()
409 	net->login_retries = 0;  in tbnet_tear_down()
423 	int ret = 0;  in tbnet_handle_packet()
429 		return 0;  in tbnet_handle_packet()
430 	if (!uuid_equal(&pkg->hdr.initiator_uuid, net->xd->remote_uuid))  in tbnet_handle_packet()
431 		return 0;  in tbnet_handle_packet()
432 	if (!uuid_equal(&pkg->hdr.target_uuid, net->xd->local_uuid))  in tbnet_handle_packet()
433 		return 0;  in tbnet_handle_packet()
437 	if (route != net->xd->route)  in tbnet_handle_packet()
438 		return 0;  in tbnet_handle_packet()
465 				net->login_retries = 0;  in tbnet_handle_packet()
467 						   &net->login_work, 0);  in tbnet_handle_packet()
485 		return 0;  in tbnet_handle_packet()
513 		/* Allocate page (order > 0) so that it can hold maximum  in tbnet_alloc_rx_buffers()
523 		dma_addr = dma_map_page(dma_dev, tf->page, 0,  in tbnet_alloc_rx_buffers()
541 	return 0;  in tbnet_alloc_rx_buffers()
561 	tf->frame.size = 0;  in tbnet_get_tx_buffer()
588 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_alloc_tx_buffers()
598 		dma_addr = dma_map_page(dma_dev, tf->page, 0, TBNET_FRAME_SIZE,  in tbnet_alloc_tx_buffers()
616 	ring->cons = 0;  in tbnet_alloc_tx_buffers()
619 	return 0;  in tbnet_alloc_tx_buffers()
640 	ret = tb_xdomain_alloc_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
664 	ret = tb_xdomain_enable_paths(net->xd, net->local_transmit_path,  in tbnet_connected_work()
686 	tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
714 		net->login_retries = 0;  in tbnet_login_work()
790 	if (frame_count == 0 || frame_count > TBNET_RING_SIZE / 4) {  in tbnet_check_frame()
794 	if (frame_index != 0) {  in tbnet_check_frame()
807 	unsigned int rx_packets = 0;  in tbnet_poll()
825 			cleaned_count = 0;  in tbnet_poll()
919 	struct tb_xdomain *xd = net->xd;  in tbnet_open()  local
927 	ring = tb_ring_alloc_tx(xd->tb->nhi, -1, TBNET_RING_SIZE,  in tbnet_open()
935 	hopid = tb_xdomain_alloc_out_hopid(xd, -1);  in tbnet_open()
936 	if (hopid < 0) {  in tbnet_open()
952 	ring = tb_ring_alloc_rx(xd->tb->nhi, -1, TBNET_RING_SIZE, flags,  in tbnet_open()
957 		tb_xdomain_release_out_hopid(xd, hopid);  in tbnet_open()
967 	return 0;  in tbnet_open()
982 	tb_xdomain_release_out_hopid(net->xd, net->local_transmit_path);  in tbnet_stop()
986 	return 0;  in tbnet_stop()
992 	struct thunderbolt_ip_frame_header *hdr = page_address(frames[0]->page);  in tbnet_xmit_csum_and_map()
1007 		for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1038 		*ipcso = 0;  in tbnet_xmit_csum_and_map()
1050 					    ip_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1051 					    ip_hdr(skb)->protocol, 0);  in tbnet_xmit_csum_and_map()
1055 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1056 					  IPPROTO_TCP, 0);  in tbnet_xmit_csum_and_map()
1060 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1061 					  ipv6_hdr(skb)->nexthdr, 0);  in tbnet_xmit_csum_and_map()
1069 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1078 		offset = 0;  in tbnet_xmit_csum_and_map()
1086 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1113 	unsigned int frag = 0;  in tbnet_start_xmit()
1115 	u32 frame_index = 0;  in tbnet_start_xmit()
1169 			} else if (unlikely(size_left > 0)) {  in tbnet_start_xmit()
1172 		} while (size_left > 0);  in tbnet_start_xmit()
1205 		} else if (unlikely(data_len > 0)) {  in tbnet_start_xmit()
1218 	for (i = 0; i < frame_index + 1; i++)  in tbnet_start_xmit()
1271 	const struct tb_xdomain *xd = net->xd;  in tbnet_generate_mac()  local
1276 	phy_port = tb_phy_port_from_link(TBNET_L0_PORT_NUM(xd->route));  in tbnet_generate_mac()
1279 	addr[0] = phy_port << 4 | 0x02;  in tbnet_generate_mac()
1280 	hash = jhash2((u32 *)xd->local_uuid, 4, 0);  in tbnet_generate_mac()
1282 	hash = jhash2((u32 *)xd->local_uuid, 4, hash);  in tbnet_generate_mac()
1283 	addr[5] = hash & 0xff;  in tbnet_generate_mac()
1289 	struct tb_xdomain *xd = tb_service_parent(svc);  in tbnet_probe()  local
1305 	atomic_set(&net->command_id, 0);  in tbnet_probe()
1306 	atomic_set(&net->frame_id, 0);  in tbnet_probe()
1309 	net->xd = xd;  in tbnet_probe()
1354 	return 0;  in tbnet_probe()
1383 	return 0;  in tbnet_suspend()
1399 	return 0;  in tbnet_resume()
1448 	return 0;  in tbnet_init()