34 #define TBNET_E2E		BIT(0)
47 #define TBNET_L0_PORT_NUM(route) ((route) & GENMASK(5, 0))
58  * supported then @frame_id is filled, otherwise it stays %0.
90 #define TBIP_HDR_LENGTH_MASK		GENMASK(5, 0)
149  * @xd: XDomain the service blongs to
180 	struct tb_xdomain *xd;  member
204 	UUID_INIT(0xc66189ca, 0x1cce, 0x4195,
205 		  0xbd, 0xb8, 0x49, 0x59, 0x2e, 0x5f, 0x5a, 0x4f);
209 	UUID_INIT(0x798f589e, 0x3616, 0x8a47,
210 		  0x97, 0xc6, 0x56, 0x64, 0xa9, 0x20, 0xc8, 0xdd);
242 	struct tb_xdomain *xd = net->xd;  in tbnet_login_response()  local
244 	memset(&reply, 0, sizeof(reply));  in tbnet_login_response()
245 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_login_response()
246 			  xd->remote_uuid, TBIP_LOGIN_RESPONSE, sizeof(reply),  in tbnet_login_response()
251 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_login_response()
259 	struct tb_xdomain *xd = net->xd;  in tbnet_login_request()  local
261 	memset(&request, 0, sizeof(request));  in tbnet_login_request()
262 	tbnet_fill_header(&request.hdr, xd->route, sequence, xd->local_uuid,  in tbnet_login_request()
263 			  xd->remote_uuid, TBIP_LOGIN, sizeof(request),  in tbnet_login_request()
269 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_login_request()
279 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_response()  local
281 	memset(&reply, 0, sizeof(reply));  in tbnet_logout_response()
282 	tbnet_fill_header(&reply.hdr, route, sequence, xd->local_uuid,  in tbnet_logout_response()
283 			  xd->remote_uuid, TBIP_STATUS, sizeof(reply),  in tbnet_logout_response()
285 	return tb_xdomain_response(xd, &reply, sizeof(reply),  in tbnet_logout_response()
293 	struct tb_xdomain *xd = net->xd;  in tbnet_logout_request()  local
295 	memset(&request, 0, sizeof(request));  in tbnet_logout_request()
296 	tbnet_fill_header(&request.hdr, xd->route, 0, xd->local_uuid,  in tbnet_logout_request()
297 			  xd->remote_uuid, TBIP_LOGOUT, sizeof(request),  in tbnet_logout_request()
300 	return tb_xdomain_request(xd, &request, sizeof(request),  in tbnet_logout_request()
332 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_free_buffers()
344 			order = 0;  in tbnet_free_buffers()
360 	ring->cons = 0;  in tbnet_free_buffers()
361 	ring->prod = 0;  in tbnet_free_buffers()
376 		while (send_logout && retries-- > 0) {  in tbnet_tear_down()
387 		ret = tb_xdomain_disable_paths(net->xd,  in tbnet_tear_down()
395 		tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_tear_down()
396 		net->remote_transmit_path = 0;  in tbnet_tear_down()
399 	net->login_retries = 0;  in tbnet_tear_down()
411 	int ret = 0;  in tbnet_handle_packet()
417 		return 0;  in tbnet_handle_packet()
418 	if (!uuid_equal(&pkg->hdr.initiator_uuid, net->xd->remote_uuid))  in tbnet_handle_packet()
419 		return 0;  in tbnet_handle_packet()
420 	if (!uuid_equal(&pkg->hdr.target_uuid, net->xd->local_uuid))  in tbnet_handle_packet()
421 		return 0;  in tbnet_handle_packet()
425 	if (route != net->xd->route)  in tbnet_handle_packet()
426 		return 0;  in tbnet_handle_packet()
450 				net->login_retries = 0;  in tbnet_handle_packet()
452 						   &net->login_work, 0);  in tbnet_handle_packet()
467 		return 0;  in tbnet_handle_packet()
495 		/* Allocate page (order > 0) so that it can hold maximum  in tbnet_alloc_rx_buffers()
505 		dma_addr = dma_map_page(dma_dev, tf->page, 0,  in tbnet_alloc_rx_buffers()
520 	return 0;  in tbnet_alloc_rx_buffers()
540 	tf->frame.size = 0;  in tbnet_get_tx_buffer()
567 	for (i = 0; i < TBNET_RING_SIZE; i++) {  in tbnet_alloc_tx_buffers()
577 		dma_addr = dma_map_page(dma_dev, tf->page, 0, TBNET_FRAME_SIZE,  in tbnet_alloc_tx_buffers()
593 	ring->cons = 0;  in tbnet_alloc_tx_buffers()
596 	return 0;  in tbnet_alloc_tx_buffers()
615 	ret = tb_xdomain_alloc_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
639 	ret = tb_xdomain_enable_paths(net->xd, net->local_transmit_path,  in tbnet_connected_work()
659 	tb_xdomain_release_in_hopid(net->xd, net->remote_transmit_path);  in tbnet_connected_work()
680 		net->login_retries = 0;  in tbnet_login_work()
756 	if (frame_count == 0 || frame_count > TBNET_RING_SIZE / 4) {  in tbnet_check_frame()
760 	if (frame_index != 0) {  in tbnet_check_frame()
773 	unsigned int rx_packets = 0;  in tbnet_poll()
791 			cleaned_count = 0;  in tbnet_poll()
879 	struct tb_xdomain *xd = net->xd;  in tbnet_open()  local
887 	ring = tb_ring_alloc_tx(xd->tb->nhi, -1, TBNET_RING_SIZE,  in tbnet_open()
895 	hopid = tb_xdomain_alloc_out_hopid(xd, -1);  in tbnet_open()
896 	if (hopid < 0) {  in tbnet_open()
912 	ring = tb_ring_alloc_rx(xd->tb->nhi, -1, TBNET_RING_SIZE, flags,  in tbnet_open()
917 		tb_xdomain_release_out_hopid(xd, hopid);  in tbnet_open()
927 	return 0;  in tbnet_open()
942 	tb_xdomain_release_out_hopid(net->xd, net->local_transmit_path);  in tbnet_stop()
946 	return 0;  in tbnet_stop()
952 	struct thunderbolt_ip_frame_header *hdr = page_address(frames[0]->page);  in tbnet_xmit_csum_and_map()
965 		for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
994 		*ipcso = 0;  in tbnet_xmit_csum_and_map()
1006 					    ip_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1007 					    ip_hdr(skb)->protocol, 0);  in tbnet_xmit_csum_and_map()
1011 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1012 					  IPPROTO_TCP, 0);  in tbnet_xmit_csum_and_map()
1017 					  &ipv6_hdr(skb)->daddr, 0,  in tbnet_xmit_csum_and_map()
1018 					  ipv6_hdr(skb)->nexthdr, 0);  in tbnet_xmit_csum_and_map()
1026 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1033 		offset = 0;  in tbnet_xmit_csum_and_map()
1041 	for (i = 0; i < frame_count; i++) {  in tbnet_xmit_csum_and_map()
1068 	unsigned int frag = 0;  in tbnet_start_xmit()
1070 	u32 frame_index = 0;  in tbnet_start_xmit()
1122 			} else if (unlikely(size_left > 0)) {  in tbnet_start_xmit()
1125 		} while (size_left > 0);  in tbnet_start_xmit()
1158 		} else if (unlikely(data_len > 0)) {  in tbnet_start_xmit()
1171 	for (i = 0; i < frame_index + 1; i++)  in tbnet_start_xmit()
1223 	const struct tb_xdomain *xd = net->xd;  in tbnet_generate_mac()  local
1228 	phy_port = tb_phy_port_from_link(TBNET_L0_PORT_NUM(xd->route));  in tbnet_generate_mac()
1231 	addr[0] = phy_port << 4 | 0x02;  in tbnet_generate_mac()
1232 	hash = jhash2((u32 *)xd->local_uuid, 4, 0);  in tbnet_generate_mac()
1234 	hash = jhash2((u32 *)xd->local_uuid, 4, hash);  in tbnet_generate_mac()
1235 	addr[5] = hash & 0xff;  in tbnet_generate_mac()
1241 	struct tb_xdomain *xd = tb_service_parent(svc);  in tbnet_probe()  local
1257 	atomic_set(&net->command_id, 0);  in tbnet_probe()
1258 	atomic_set(&net->frame_id, 0);  in tbnet_probe()
1261 	net->xd = xd;  in tbnet_probe()
1306 	return 0;  in tbnet_probe()
1335 	return 0;  in tbnet_suspend()
1351 	return 0;  in tbnet_resume()
1402 	return 0;  in tbnet_init()