195fa0405SHaiyang Zhang /* 295fa0405SHaiyang Zhang * Copyright (c) 2009, Microsoft Corporation. 395fa0405SHaiyang Zhang * 495fa0405SHaiyang Zhang * This program is free software; you can redistribute it and/or modify it 595fa0405SHaiyang Zhang * under the terms and conditions of the GNU General Public License, 695fa0405SHaiyang Zhang * version 2, as published by the Free Software Foundation. 795fa0405SHaiyang Zhang * 895fa0405SHaiyang Zhang * This program is distributed in the hope it will be useful, but WITHOUT 995fa0405SHaiyang Zhang * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1095fa0405SHaiyang Zhang * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1195fa0405SHaiyang Zhang * more details. 1295fa0405SHaiyang Zhang * 1395fa0405SHaiyang Zhang * You should have received a copy of the GNU General Public License along with 14adf8d3ffSJeff Kirsher * this program; if not, see <http://www.gnu.org/licenses/>. 1595fa0405SHaiyang Zhang * 1695fa0405SHaiyang Zhang * Authors: 1795fa0405SHaiyang Zhang * Haiyang Zhang <haiyangz@microsoft.com> 1895fa0405SHaiyang Zhang * Hank Janssen <hjanssen@microsoft.com> 1995fa0405SHaiyang Zhang */ 2095fa0405SHaiyang Zhang #include <linux/kernel.h> 2195fa0405SHaiyang Zhang #include <linux/sched.h> 2295fa0405SHaiyang Zhang #include <linux/wait.h> 2395fa0405SHaiyang Zhang #include <linux/highmem.h> 2495fa0405SHaiyang Zhang #include <linux/slab.h> 2595fa0405SHaiyang Zhang #include <linux/io.h> 2695fa0405SHaiyang Zhang #include <linux/if_ether.h> 2795fa0405SHaiyang Zhang #include <linux/netdevice.h> 281f5f3a75SHaiyang Zhang #include <linux/if_vlan.h> 291ce09e89SHaiyang Zhang #include <linux/nls.h> 30d6472302SStephen Rothwell #include <linux/vmalloc.h> 3195fa0405SHaiyang Zhang 3295fa0405SHaiyang Zhang #include "hyperv_net.h" 3395fa0405SHaiyang Zhang 3495fa0405SHaiyang Zhang 355b54dac8SHaiyang Zhang #define RNDIS_EXT_LEN PAGE_SIZE 3695fa0405SHaiyang Zhang struct rndis_request { 3795fa0405SHaiyang Zhang struct list_head list_ent; 3895fa0405SHaiyang Zhang struct completion wait_event; 3995fa0405SHaiyang Zhang 4095fa0405SHaiyang Zhang struct rndis_message response_msg; 41a3a6cab5SHaiyang Zhang /* 42a3a6cab5SHaiyang Zhang * The buffer for extended info after the RNDIS response message. It's 43a3a6cab5SHaiyang Zhang * referenced based on the data offset in the RNDIS message. Its size 44a3a6cab5SHaiyang Zhang * is enough for current needs, and should be sufficient for the near 45a3a6cab5SHaiyang Zhang * future. 46a3a6cab5SHaiyang Zhang */ 47a3a6cab5SHaiyang Zhang u8 response_ext[RNDIS_EXT_LEN]; 4895fa0405SHaiyang Zhang 4995fa0405SHaiyang Zhang /* Simplify allocation by having a netvsc packet inline */ 5095fa0405SHaiyang Zhang struct hv_netvsc_packet pkt; 510f48917bSHaiyang Zhang 5295fa0405SHaiyang Zhang struct rndis_message request_msg; 530f48917bSHaiyang Zhang /* 54a3a6cab5SHaiyang Zhang * The buffer for the extended info after the RNDIS request message. 55a3a6cab5SHaiyang Zhang * It is referenced and sized in a similar way as response_ext. 560f48917bSHaiyang Zhang */ 57a3a6cab5SHaiyang Zhang u8 request_ext[RNDIS_EXT_LEN]; 5895fa0405SHaiyang Zhang }; 5995fa0405SHaiyang Zhang 60962f3feeSstephen hemminger static const u8 netvsc_hash_key[NETVSC_HASH_KEYLEN] = { 61962f3feeSstephen hemminger 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 62962f3feeSstephen hemminger 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 63962f3feeSstephen hemminger 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, 64962f3feeSstephen hemminger 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, 65962f3feeSstephen hemminger 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa 66962f3feeSstephen hemminger }; 67962f3feeSstephen hemminger 6895fa0405SHaiyang Zhang static struct rndis_device *get_rndis_device(void) 6995fa0405SHaiyang Zhang { 7095fa0405SHaiyang Zhang struct rndis_device *device; 7195fa0405SHaiyang Zhang 7295fa0405SHaiyang Zhang device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); 7395fa0405SHaiyang Zhang if (!device) 7495fa0405SHaiyang Zhang return NULL; 7595fa0405SHaiyang Zhang 7695fa0405SHaiyang Zhang spin_lock_init(&device->request_lock); 7795fa0405SHaiyang Zhang 7895fa0405SHaiyang Zhang INIT_LIST_HEAD(&device->req_list); 7995fa0405SHaiyang Zhang 8095fa0405SHaiyang Zhang device->state = RNDIS_DEV_UNINITIALIZED; 8195fa0405SHaiyang Zhang 8295fa0405SHaiyang Zhang return device; 8395fa0405SHaiyang Zhang } 8495fa0405SHaiyang Zhang 8595fa0405SHaiyang Zhang static struct rndis_request *get_rndis_request(struct rndis_device *dev, 8695fa0405SHaiyang Zhang u32 msg_type, 8795fa0405SHaiyang Zhang u32 msg_len) 8895fa0405SHaiyang Zhang { 8995fa0405SHaiyang Zhang struct rndis_request *request; 9095fa0405SHaiyang Zhang struct rndis_message *rndis_msg; 9195fa0405SHaiyang Zhang struct rndis_set_request *set; 9295fa0405SHaiyang Zhang unsigned long flags; 9395fa0405SHaiyang Zhang 9495fa0405SHaiyang Zhang request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); 9595fa0405SHaiyang Zhang if (!request) 9695fa0405SHaiyang Zhang return NULL; 9795fa0405SHaiyang Zhang 9895fa0405SHaiyang Zhang init_completion(&request->wait_event); 9995fa0405SHaiyang Zhang 10095fa0405SHaiyang Zhang rndis_msg = &request->request_msg; 10195fa0405SHaiyang Zhang rndis_msg->ndis_msg_type = msg_type; 10295fa0405SHaiyang Zhang rndis_msg->msg_len = msg_len; 10395fa0405SHaiyang Zhang 1045b54dac8SHaiyang Zhang request->pkt.q_idx = 0; 1055b54dac8SHaiyang Zhang 10695fa0405SHaiyang Zhang /* 10795fa0405SHaiyang Zhang * Set the request id. This field is always after the rndis header for 10895fa0405SHaiyang Zhang * request/response packet types so we just used the SetRequest as a 10995fa0405SHaiyang Zhang * template 11095fa0405SHaiyang Zhang */ 11195fa0405SHaiyang Zhang set = &rndis_msg->msg.set_req; 11295fa0405SHaiyang Zhang set->req_id = atomic_inc_return(&dev->new_req_id); 11395fa0405SHaiyang Zhang 11495fa0405SHaiyang Zhang /* Add to the request list */ 11595fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 11695fa0405SHaiyang Zhang list_add_tail(&request->list_ent, &dev->req_list); 11795fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 11895fa0405SHaiyang Zhang 11995fa0405SHaiyang Zhang return request; 12095fa0405SHaiyang Zhang } 12195fa0405SHaiyang Zhang 12295fa0405SHaiyang Zhang static void put_rndis_request(struct rndis_device *dev, 12395fa0405SHaiyang Zhang struct rndis_request *req) 12495fa0405SHaiyang Zhang { 12595fa0405SHaiyang Zhang unsigned long flags; 12695fa0405SHaiyang Zhang 12795fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 12895fa0405SHaiyang Zhang list_del(&req->list_ent); 12995fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 13095fa0405SHaiyang Zhang 13195fa0405SHaiyang Zhang kfree(req); 13295fa0405SHaiyang Zhang } 13395fa0405SHaiyang Zhang 13495fa0405SHaiyang Zhang static void dump_rndis_message(struct hv_device *hv_dev, 135dc54a08cSstephen hemminger const struct rndis_message *rndis_msg) 13695fa0405SHaiyang Zhang { 1373d541ac5SVitaly Kuznetsov struct net_device *netdev = hv_get_drvdata(hv_dev); 13895fa0405SHaiyang Zhang 13995fa0405SHaiyang Zhang switch (rndis_msg->ndis_msg_type) { 14051491167SLinus Walleij case RNDIS_MSG_PACKET: 14151491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " 14295fa0405SHaiyang Zhang "data offset %u data len %u, # oob %u, " 14395fa0405SHaiyang Zhang "oob offset %u, oob len %u, pkt offset %u, " 14495fa0405SHaiyang Zhang "pkt len %u\n", 14595fa0405SHaiyang Zhang rndis_msg->msg_len, 14695fa0405SHaiyang Zhang rndis_msg->msg.pkt.data_offset, 14795fa0405SHaiyang Zhang rndis_msg->msg.pkt.data_len, 14895fa0405SHaiyang Zhang rndis_msg->msg.pkt.num_oob_data_elements, 14995fa0405SHaiyang Zhang rndis_msg->msg.pkt.oob_data_offset, 15095fa0405SHaiyang Zhang rndis_msg->msg.pkt.oob_data_len, 15195fa0405SHaiyang Zhang rndis_msg->msg.pkt.per_pkt_info_offset, 15295fa0405SHaiyang Zhang rndis_msg->msg.pkt.per_pkt_info_len); 15395fa0405SHaiyang Zhang break; 15495fa0405SHaiyang Zhang 15551491167SLinus Walleij case RNDIS_MSG_INIT_C: 15651491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_INIT_C " 15795fa0405SHaiyang Zhang "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " 15895fa0405SHaiyang Zhang "device flags %d, max xfer size 0x%x, max pkts %u, " 15995fa0405SHaiyang Zhang "pkt aligned %u)\n", 16095fa0405SHaiyang Zhang rndis_msg->msg_len, 16195fa0405SHaiyang Zhang rndis_msg->msg.init_complete.req_id, 16295fa0405SHaiyang Zhang rndis_msg->msg.init_complete.status, 16395fa0405SHaiyang Zhang rndis_msg->msg.init_complete.major_ver, 16495fa0405SHaiyang Zhang rndis_msg->msg.init_complete.minor_ver, 16595fa0405SHaiyang Zhang rndis_msg->msg.init_complete.dev_flags, 16695fa0405SHaiyang Zhang rndis_msg->msg.init_complete.max_xfer_size, 16795fa0405SHaiyang Zhang rndis_msg->msg.init_complete. 16895fa0405SHaiyang Zhang max_pkt_per_msg, 16995fa0405SHaiyang Zhang rndis_msg->msg.init_complete. 17095fa0405SHaiyang Zhang pkt_alignment_factor); 17195fa0405SHaiyang Zhang break; 17295fa0405SHaiyang Zhang 17351491167SLinus Walleij case RNDIS_MSG_QUERY_C: 17451491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " 17595fa0405SHaiyang Zhang "(len %u, id 0x%x, status 0x%x, buf len %u, " 17695fa0405SHaiyang Zhang "buf offset %u)\n", 17795fa0405SHaiyang Zhang rndis_msg->msg_len, 17895fa0405SHaiyang Zhang rndis_msg->msg.query_complete.req_id, 17995fa0405SHaiyang Zhang rndis_msg->msg.query_complete.status, 18095fa0405SHaiyang Zhang rndis_msg->msg.query_complete. 18195fa0405SHaiyang Zhang info_buflen, 18295fa0405SHaiyang Zhang rndis_msg->msg.query_complete. 18395fa0405SHaiyang Zhang info_buf_offset); 18495fa0405SHaiyang Zhang break; 18595fa0405SHaiyang Zhang 18651491167SLinus Walleij case RNDIS_MSG_SET_C: 18795fa0405SHaiyang Zhang netdev_dbg(netdev, 18851491167SLinus Walleij "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", 18995fa0405SHaiyang Zhang rndis_msg->msg_len, 19095fa0405SHaiyang Zhang rndis_msg->msg.set_complete.req_id, 19195fa0405SHaiyang Zhang rndis_msg->msg.set_complete.status); 19295fa0405SHaiyang Zhang break; 19395fa0405SHaiyang Zhang 19451491167SLinus Walleij case RNDIS_MSG_INDICATE: 19551491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_INDICATE " 19695fa0405SHaiyang Zhang "(len %u, status 0x%x, buf len %u, buf offset %u)\n", 19795fa0405SHaiyang Zhang rndis_msg->msg_len, 19895fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status, 19995fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status_buflen, 20095fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status_buf_offset); 20195fa0405SHaiyang Zhang break; 20295fa0405SHaiyang Zhang 20395fa0405SHaiyang Zhang default: 20495fa0405SHaiyang Zhang netdev_dbg(netdev, "0x%x (len %u)\n", 20595fa0405SHaiyang Zhang rndis_msg->ndis_msg_type, 20695fa0405SHaiyang Zhang rndis_msg->msg_len); 20795fa0405SHaiyang Zhang break; 20895fa0405SHaiyang Zhang } 20995fa0405SHaiyang Zhang } 21095fa0405SHaiyang Zhang 21195fa0405SHaiyang Zhang static int rndis_filter_send_request(struct rndis_device *dev, 21295fa0405SHaiyang Zhang struct rndis_request *req) 21395fa0405SHaiyang Zhang { 21495fa0405SHaiyang Zhang int ret; 21595fa0405SHaiyang Zhang struct hv_netvsc_packet *packet; 216b08cc791SKY Srinivasan struct hv_page_buffer page_buf[2]; 217a9f2e2d6SKY Srinivasan struct hv_page_buffer *pb = page_buf; 2183d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); 21995fa0405SHaiyang Zhang 22095fa0405SHaiyang Zhang /* Setup the packet to send it */ 22195fa0405SHaiyang Zhang packet = &req->pkt; 22295fa0405SHaiyang Zhang 22395fa0405SHaiyang Zhang packet->total_data_buflen = req->request_msg.msg_len; 22495fa0405SHaiyang Zhang packet->page_buf_cnt = 1; 22595fa0405SHaiyang Zhang 226a9f2e2d6SKY Srinivasan pb[0].pfn = virt_to_phys(&req->request_msg) >> 22795fa0405SHaiyang Zhang PAGE_SHIFT; 228a9f2e2d6SKY Srinivasan pb[0].len = req->request_msg.msg_len; 229a9f2e2d6SKY Srinivasan pb[0].offset = 23095fa0405SHaiyang Zhang (unsigned long)&req->request_msg & (PAGE_SIZE - 1); 23195fa0405SHaiyang Zhang 23299e3fcfaSHaiyang Zhang /* Add one page_buf when request_msg crossing page boundary */ 233a9f2e2d6SKY Srinivasan if (pb[0].offset + pb[0].len > PAGE_SIZE) { 23499e3fcfaSHaiyang Zhang packet->page_buf_cnt++; 235a9f2e2d6SKY Srinivasan pb[0].len = PAGE_SIZE - 236a9f2e2d6SKY Srinivasan pb[0].offset; 237a9f2e2d6SKY Srinivasan pb[1].pfn = virt_to_phys((void *)&req->request_msg 238a9f2e2d6SKY Srinivasan + pb[0].len) >> PAGE_SHIFT; 239a9f2e2d6SKY Srinivasan pb[1].offset = 0; 240a9f2e2d6SKY Srinivasan pb[1].len = req->request_msg.msg_len - 241a9f2e2d6SKY Srinivasan pb[0].len; 24299e3fcfaSHaiyang Zhang } 24399e3fcfaSHaiyang Zhang 2443d541ac5SVitaly Kuznetsov ret = netvsc_send(net_device_ctx->device_ctx, packet, NULL, &pb, NULL); 24595fa0405SHaiyang Zhang return ret; 24695fa0405SHaiyang Zhang } 24795fa0405SHaiyang Zhang 2481b07da51SHaiyang Zhang static void rndis_set_link_state(struct rndis_device *rdev, 2491b07da51SHaiyang Zhang struct rndis_request *request) 2501b07da51SHaiyang Zhang { 2511b07da51SHaiyang Zhang u32 link_status; 2521b07da51SHaiyang Zhang struct rndis_query_complete *query_complete; 2531b07da51SHaiyang Zhang 2541b07da51SHaiyang Zhang query_complete = &request->response_msg.msg.query_complete; 2551b07da51SHaiyang Zhang 2561b07da51SHaiyang Zhang if (query_complete->status == RNDIS_STATUS_SUCCESS && 2571b07da51SHaiyang Zhang query_complete->info_buflen == sizeof(u32)) { 2581b07da51SHaiyang Zhang memcpy(&link_status, (void *)((unsigned long)query_complete + 2591b07da51SHaiyang Zhang query_complete->info_buf_offset), sizeof(u32)); 2601b07da51SHaiyang Zhang rdev->link_state = link_status != 0; 2611b07da51SHaiyang Zhang } 2621b07da51SHaiyang Zhang } 2631b07da51SHaiyang Zhang 26495fa0405SHaiyang Zhang static void rndis_filter_receive_response(struct rndis_device *dev, 26595fa0405SHaiyang Zhang struct rndis_message *resp) 26695fa0405SHaiyang Zhang { 26795fa0405SHaiyang Zhang struct rndis_request *request = NULL; 26895fa0405SHaiyang Zhang bool found = false; 26995fa0405SHaiyang Zhang unsigned long flags; 2703d541ac5SVitaly Kuznetsov struct net_device *ndev = dev->ndev; 27195fa0405SHaiyang Zhang 27295fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 27395fa0405SHaiyang Zhang list_for_each_entry(request, &dev->req_list, list_ent) { 27495fa0405SHaiyang Zhang /* 27595fa0405SHaiyang Zhang * All request/response message contains RequestId as the 1st 27695fa0405SHaiyang Zhang * field 27795fa0405SHaiyang Zhang */ 27895fa0405SHaiyang Zhang if (request->request_msg.msg.init_req.req_id 27995fa0405SHaiyang Zhang == resp->msg.init_complete.req_id) { 28095fa0405SHaiyang Zhang found = true; 28195fa0405SHaiyang Zhang break; 28295fa0405SHaiyang Zhang } 28395fa0405SHaiyang Zhang } 28495fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 28595fa0405SHaiyang Zhang 28695fa0405SHaiyang Zhang if (found) { 287a3a6cab5SHaiyang Zhang if (resp->msg_len <= 288a3a6cab5SHaiyang Zhang sizeof(struct rndis_message) + RNDIS_EXT_LEN) { 28995fa0405SHaiyang Zhang memcpy(&request->response_msg, resp, 29095fa0405SHaiyang Zhang resp->msg_len); 2911b07da51SHaiyang Zhang if (request->request_msg.ndis_msg_type == 2921b07da51SHaiyang Zhang RNDIS_MSG_QUERY && request->request_msg.msg. 2931b07da51SHaiyang Zhang query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) 2941b07da51SHaiyang Zhang rndis_set_link_state(dev, request); 29595fa0405SHaiyang Zhang } else { 29695fa0405SHaiyang Zhang netdev_err(ndev, 29795fa0405SHaiyang Zhang "rndis response buffer overflow " 29895fa0405SHaiyang Zhang "detected (size %u max %zu)\n", 29995fa0405SHaiyang Zhang resp->msg_len, 30086eedaccSKY Srinivasan sizeof(struct rndis_message)); 30195fa0405SHaiyang Zhang 30295fa0405SHaiyang Zhang if (resp->ndis_msg_type == 30351491167SLinus Walleij RNDIS_MSG_RESET_C) { 30495fa0405SHaiyang Zhang /* does not have a request id field */ 30595fa0405SHaiyang Zhang request->response_msg.msg.reset_complete. 306007e5c8eSLinus Walleij status = RNDIS_STATUS_BUFFER_OVERFLOW; 30795fa0405SHaiyang Zhang } else { 30895fa0405SHaiyang Zhang request->response_msg.msg. 30995fa0405SHaiyang Zhang init_complete.status = 310007e5c8eSLinus Walleij RNDIS_STATUS_BUFFER_OVERFLOW; 31195fa0405SHaiyang Zhang } 31295fa0405SHaiyang Zhang } 31395fa0405SHaiyang Zhang 31495fa0405SHaiyang Zhang complete(&request->wait_event); 31595fa0405SHaiyang Zhang } else { 31695fa0405SHaiyang Zhang netdev_err(ndev, 31795fa0405SHaiyang Zhang "no rndis request found for this response " 31895fa0405SHaiyang Zhang "(id 0x%x res type 0x%x)\n", 31995fa0405SHaiyang Zhang resp->msg.init_complete.req_id, 32095fa0405SHaiyang Zhang resp->ndis_msg_type); 32195fa0405SHaiyang Zhang } 32295fa0405SHaiyang Zhang } 32395fa0405SHaiyang Zhang 3241f5f3a75SHaiyang Zhang /* 3251f5f3a75SHaiyang Zhang * Get the Per-Packet-Info with the specified type 3261f5f3a75SHaiyang Zhang * return NULL if not found. 3271f5f3a75SHaiyang Zhang */ 3281f5f3a75SHaiyang Zhang static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) 3291f5f3a75SHaiyang Zhang { 3301f5f3a75SHaiyang Zhang struct rndis_per_packet_info *ppi; 3311f5f3a75SHaiyang Zhang int len; 3321f5f3a75SHaiyang Zhang 3331f5f3a75SHaiyang Zhang if (rpkt->per_pkt_info_offset == 0) 3341f5f3a75SHaiyang Zhang return NULL; 3351f5f3a75SHaiyang Zhang 3361f5f3a75SHaiyang Zhang ppi = (struct rndis_per_packet_info *)((ulong)rpkt + 3371f5f3a75SHaiyang Zhang rpkt->per_pkt_info_offset); 3381f5f3a75SHaiyang Zhang len = rpkt->per_pkt_info_len; 3391f5f3a75SHaiyang Zhang 3401f5f3a75SHaiyang Zhang while (len > 0) { 3411f5f3a75SHaiyang Zhang if (ppi->type == type) 3421f5f3a75SHaiyang Zhang return (void *)((ulong)ppi + ppi->ppi_offset); 3431f5f3a75SHaiyang Zhang len -= ppi->size; 3441f5f3a75SHaiyang Zhang ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); 3451f5f3a75SHaiyang Zhang } 3461f5f3a75SHaiyang Zhang 3471f5f3a75SHaiyang Zhang return NULL; 3481f5f3a75SHaiyang Zhang } 3491f5f3a75SHaiyang Zhang 350dc54a08cSstephen hemminger static int rndis_filter_receive_data(struct net_device *ndev, 351dc54a08cSstephen hemminger struct rndis_device *dev, 35295fa0405SHaiyang Zhang struct rndis_message *msg, 353dc54a08cSstephen hemminger struct vmbus_channel *channel, 354dc54a08cSstephen hemminger void *data, u32 data_buflen) 35595fa0405SHaiyang Zhang { 356dc54a08cSstephen hemminger struct rndis_packet *rndis_pkt = &msg->msg.pkt; 357dc54a08cSstephen hemminger const struct ndis_tcp_ip_checksum_info *csum_info; 358dc54a08cSstephen hemminger const struct ndis_pkt_8021q_info *vlan; 35995fa0405SHaiyang Zhang u32 data_offset; 36095fa0405SHaiyang Zhang 36195fa0405SHaiyang Zhang /* Remove the rndis header and pass it back up the stack */ 36295fa0405SHaiyang Zhang data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; 36395fa0405SHaiyang Zhang 364dc54a08cSstephen hemminger data_buflen -= data_offset; 3654b8a8bc9SWei Yongjun 3664b8a8bc9SWei Yongjun /* 3674b8a8bc9SWei Yongjun * Make sure we got a valid RNDIS message, now total_data_buflen 3684b8a8bc9SWei Yongjun * should be the data packet size plus the trailer padding size 3694b8a8bc9SWei Yongjun */ 370dc54a08cSstephen hemminger if (unlikely(data_buflen < rndis_pkt->data_len)) { 3713d541ac5SVitaly Kuznetsov netdev_err(dev->ndev, "rndis message buffer " 3724b8a8bc9SWei Yongjun "overflow detected (got %u, min %u)" 3734b8a8bc9SWei Yongjun "...dropping this message!\n", 374dc54a08cSstephen hemminger data_buflen, rndis_pkt->data_len); 37510082f98SKY Srinivasan return NVSP_STAT_FAIL; 3764b8a8bc9SWei Yongjun } 3774b8a8bc9SWei Yongjun 378dc54a08cSstephen hemminger vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); 379dc54a08cSstephen hemminger 3804b8a8bc9SWei Yongjun /* 3814b8a8bc9SWei Yongjun * Remove the rndis trailer padding from rndis packet message 3824b8a8bc9SWei Yongjun * rndis_pkt->data_len tell us the real data length, we only copy 3834b8a8bc9SWei Yongjun * the data packet to the stack, without the rndis trailer padding 3844b8a8bc9SWei Yongjun */ 385dc54a08cSstephen hemminger data = (void *)((unsigned long)data + data_offset); 386e3d605edSKY Srinivasan csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); 387dc54a08cSstephen hemminger return netvsc_recv_callback(ndev, channel, 388dc54a08cSstephen hemminger data, rndis_pkt->data_len, 389dc54a08cSstephen hemminger csum_info, vlan); 39095fa0405SHaiyang Zhang } 39195fa0405SHaiyang Zhang 392dc54a08cSstephen hemminger int rndis_filter_receive(struct net_device *ndev, 393dc54a08cSstephen hemminger struct netvsc_device *net_dev, 394dc54a08cSstephen hemminger struct hv_device *dev, 395dc54a08cSstephen hemminger struct vmbus_channel *channel, 396dc54a08cSstephen hemminger void *data, u32 buflen) 39795fa0405SHaiyang Zhang { 3983d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(ndev); 399dc54a08cSstephen hemminger struct rndis_device *rndis_dev = net_dev->extension; 400dc54a08cSstephen hemminger struct rndis_message *rndis_msg = data; 40195fa0405SHaiyang Zhang 40295fa0405SHaiyang Zhang /* Make sure the rndis device state is initialized */ 403dc54a08cSstephen hemminger if (unlikely(!rndis_dev)) { 404dc54a08cSstephen hemminger netif_err(net_device_ctx, rx_err, ndev, 405dc54a08cSstephen hemminger "got rndis message but no rndis device!\n"); 406dc54a08cSstephen hemminger return NVSP_STAT_FAIL; 40795fa0405SHaiyang Zhang } 40895fa0405SHaiyang Zhang 409dc54a08cSstephen hemminger if (unlikely(rndis_dev->state == RNDIS_DEV_UNINITIALIZED)) { 410dc54a08cSstephen hemminger netif_err(net_device_ctx, rx_err, ndev, 411dc54a08cSstephen hemminger "got rndis message uninitialized\n"); 412dc54a08cSstephen hemminger return NVSP_STAT_FAIL; 41395fa0405SHaiyang Zhang } 41495fa0405SHaiyang Zhang 415dc54a08cSstephen hemminger if (netif_msg_rx_status(net_device_ctx)) 416ef31bef6SHaiyang Zhang dump_rndis_message(dev, rndis_msg); 41795fa0405SHaiyang Zhang 418ef31bef6SHaiyang Zhang switch (rndis_msg->ndis_msg_type) { 41951491167SLinus Walleij case RNDIS_MSG_PACKET: 420dc54a08cSstephen hemminger return rndis_filter_receive_data(ndev, rndis_dev, rndis_msg, 421dc54a08cSstephen hemminger channel, data, buflen); 42251491167SLinus Walleij case RNDIS_MSG_INIT_C: 42351491167SLinus Walleij case RNDIS_MSG_QUERY_C: 42451491167SLinus Walleij case RNDIS_MSG_SET_C: 42595fa0405SHaiyang Zhang /* completion msgs */ 426ef31bef6SHaiyang Zhang rndis_filter_receive_response(rndis_dev, rndis_msg); 42795fa0405SHaiyang Zhang break; 42895fa0405SHaiyang Zhang 42951491167SLinus Walleij case RNDIS_MSG_INDICATE: 43095fa0405SHaiyang Zhang /* notification msgs */ 4313a494e71SHaiyang Zhang netvsc_linkstatus_callback(dev, rndis_msg); 43295fa0405SHaiyang Zhang break; 43395fa0405SHaiyang Zhang default: 43495fa0405SHaiyang Zhang netdev_err(ndev, 43595fa0405SHaiyang Zhang "unhandled rndis message (type %u len %u)\n", 436ef31bef6SHaiyang Zhang rndis_msg->ndis_msg_type, 437ef31bef6SHaiyang Zhang rndis_msg->msg_len); 43895fa0405SHaiyang Zhang break; 43995fa0405SHaiyang Zhang } 44095fa0405SHaiyang Zhang 441dc54a08cSstephen hemminger return 0; 44295fa0405SHaiyang Zhang } 44395fa0405SHaiyang Zhang 44495fa0405SHaiyang Zhang static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, 44595fa0405SHaiyang Zhang void *result, u32 *result_size) 44695fa0405SHaiyang Zhang { 44795fa0405SHaiyang Zhang struct rndis_request *request; 44895fa0405SHaiyang Zhang u32 inresult_size = *result_size; 44995fa0405SHaiyang Zhang struct rndis_query_request *query; 45095fa0405SHaiyang Zhang struct rndis_query_complete *query_complete; 45195fa0405SHaiyang Zhang int ret = 0; 45295fa0405SHaiyang Zhang 45395fa0405SHaiyang Zhang if (!result) 45495fa0405SHaiyang Zhang return -EINVAL; 45595fa0405SHaiyang Zhang 45695fa0405SHaiyang Zhang *result_size = 0; 45751491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_QUERY, 45895fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_query_request)); 45995fa0405SHaiyang Zhang if (!request) { 46095fa0405SHaiyang Zhang ret = -ENOMEM; 46195fa0405SHaiyang Zhang goto cleanup; 46295fa0405SHaiyang Zhang } 46395fa0405SHaiyang Zhang 46495fa0405SHaiyang Zhang /* Setup the rndis query */ 46595fa0405SHaiyang Zhang query = &request->request_msg.msg.query_req; 46695fa0405SHaiyang Zhang query->oid = oid; 46795fa0405SHaiyang Zhang query->info_buf_offset = sizeof(struct rndis_query_request); 46895fa0405SHaiyang Zhang query->info_buflen = 0; 46995fa0405SHaiyang Zhang query->dev_vc_handle = 0; 47095fa0405SHaiyang Zhang 47123312a3bSstephen hemminger if (oid == OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES) { 47223312a3bSstephen hemminger struct net_device_context *ndevctx = netdev_priv(dev->ndev); 47323312a3bSstephen hemminger struct netvsc_device *nvdev = ndevctx->nvdev; 47423312a3bSstephen hemminger struct ndis_offload *hwcaps; 47523312a3bSstephen hemminger u32 nvsp_version = nvdev->nvsp_version; 47623312a3bSstephen hemminger u8 ndis_rev; 47723312a3bSstephen hemminger size_t size; 47823312a3bSstephen hemminger 47923312a3bSstephen hemminger if (nvsp_version >= NVSP_PROTOCOL_VERSION_5) { 48023312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_3; 48123312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE; 48223312a3bSstephen hemminger } else if (nvsp_version >= NVSP_PROTOCOL_VERSION_4) { 48323312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_2; 48423312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE_6_1; 48523312a3bSstephen hemminger } else { 48623312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_1; 48723312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE_6_0; 48823312a3bSstephen hemminger } 48923312a3bSstephen hemminger 49023312a3bSstephen hemminger request->request_msg.msg_len += size; 49123312a3bSstephen hemminger query->info_buflen = size; 49223312a3bSstephen hemminger hwcaps = (struct ndis_offload *) 49323312a3bSstephen hemminger ((unsigned long)query + query->info_buf_offset); 49423312a3bSstephen hemminger 49523312a3bSstephen hemminger hwcaps->header.type = NDIS_OBJECT_TYPE_OFFLOAD; 49623312a3bSstephen hemminger hwcaps->header.revision = ndis_rev; 49723312a3bSstephen hemminger hwcaps->header.size = size; 49823312a3bSstephen hemminger 49923312a3bSstephen hemminger } else if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { 5005b54dac8SHaiyang Zhang struct ndis_recv_scale_cap *cap; 5015b54dac8SHaiyang Zhang 5025b54dac8SHaiyang Zhang request->request_msg.msg_len += 5035b54dac8SHaiyang Zhang sizeof(struct ndis_recv_scale_cap); 5045b54dac8SHaiyang Zhang query->info_buflen = sizeof(struct ndis_recv_scale_cap); 5055b54dac8SHaiyang Zhang cap = (struct ndis_recv_scale_cap *)((unsigned long)query + 5065b54dac8SHaiyang Zhang query->info_buf_offset); 5075b54dac8SHaiyang Zhang cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; 5085b54dac8SHaiyang Zhang cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; 5095b54dac8SHaiyang Zhang cap->hdr.size = sizeof(struct ndis_recv_scale_cap); 5105b54dac8SHaiyang Zhang } 5115b54dac8SHaiyang Zhang 51295fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 51395fa0405SHaiyang Zhang if (ret != 0) 51495fa0405SHaiyang Zhang goto cleanup; 51595fa0405SHaiyang Zhang 5165362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 51795fa0405SHaiyang Zhang 51895fa0405SHaiyang Zhang /* Copy the response back */ 51995fa0405SHaiyang Zhang query_complete = &request->response_msg.msg.query_complete; 52095fa0405SHaiyang Zhang 52195fa0405SHaiyang Zhang if (query_complete->info_buflen > inresult_size) { 52295fa0405SHaiyang Zhang ret = -1; 52395fa0405SHaiyang Zhang goto cleanup; 52495fa0405SHaiyang Zhang } 52595fa0405SHaiyang Zhang 52695fa0405SHaiyang Zhang memcpy(result, 52795fa0405SHaiyang Zhang (void *)((unsigned long)query_complete + 52895fa0405SHaiyang Zhang query_complete->info_buf_offset), 52995fa0405SHaiyang Zhang query_complete->info_buflen); 53095fa0405SHaiyang Zhang 53195fa0405SHaiyang Zhang *result_size = query_complete->info_buflen; 53295fa0405SHaiyang Zhang 53395fa0405SHaiyang Zhang cleanup: 53495fa0405SHaiyang Zhang if (request) 53595fa0405SHaiyang Zhang put_rndis_request(dev, request); 53695fa0405SHaiyang Zhang 53795fa0405SHaiyang Zhang return ret; 53895fa0405SHaiyang Zhang } 53995fa0405SHaiyang Zhang 54023312a3bSstephen hemminger /* Get the hardware offload capabilities */ 54123312a3bSstephen hemminger static int 54223312a3bSstephen hemminger rndis_query_hwcaps(struct rndis_device *dev, struct ndis_offload *caps) 54323312a3bSstephen hemminger { 54423312a3bSstephen hemminger u32 caps_len = sizeof(*caps); 54523312a3bSstephen hemminger int ret; 54623312a3bSstephen hemminger 54723312a3bSstephen hemminger memset(caps, 0, sizeof(*caps)); 54823312a3bSstephen hemminger 54923312a3bSstephen hemminger ret = rndis_filter_query_device(dev, 55023312a3bSstephen hemminger OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES, 55123312a3bSstephen hemminger caps, &caps_len); 55223312a3bSstephen hemminger if (ret) 55323312a3bSstephen hemminger return ret; 55423312a3bSstephen hemminger 55523312a3bSstephen hemminger if (caps->header.type != NDIS_OBJECT_TYPE_OFFLOAD) { 55623312a3bSstephen hemminger netdev_warn(dev->ndev, "invalid NDIS objtype %#x\n", 55723312a3bSstephen hemminger caps->header.type); 55823312a3bSstephen hemminger return -EINVAL; 55923312a3bSstephen hemminger } 56023312a3bSstephen hemminger 56123312a3bSstephen hemminger if (caps->header.revision < NDIS_OFFLOAD_PARAMETERS_REVISION_1) { 56223312a3bSstephen hemminger netdev_warn(dev->ndev, "invalid NDIS objrev %x\n", 56323312a3bSstephen hemminger caps->header.revision); 56423312a3bSstephen hemminger return -EINVAL; 56523312a3bSstephen hemminger } 56623312a3bSstephen hemminger 56723312a3bSstephen hemminger if (caps->header.size > caps_len || 56823312a3bSstephen hemminger caps->header.size < NDIS_OFFLOAD_SIZE_6_0) { 56923312a3bSstephen hemminger netdev_warn(dev->ndev, 57023312a3bSstephen hemminger "invalid NDIS objsize %u, data size %u\n", 57123312a3bSstephen hemminger caps->header.size, caps_len); 57223312a3bSstephen hemminger return -EINVAL; 57323312a3bSstephen hemminger } 57423312a3bSstephen hemminger 57523312a3bSstephen hemminger return 0; 57623312a3bSstephen hemminger } 57723312a3bSstephen hemminger 57895fa0405SHaiyang Zhang static int rndis_filter_query_device_mac(struct rndis_device *dev) 57995fa0405SHaiyang Zhang { 58095fa0405SHaiyang Zhang u32 size = ETH_ALEN; 58195fa0405SHaiyang Zhang 58295fa0405SHaiyang Zhang return rndis_filter_query_device(dev, 58395fa0405SHaiyang Zhang RNDIS_OID_802_3_PERMANENT_ADDRESS, 58495fa0405SHaiyang Zhang dev->hw_mac_adr, &size); 58595fa0405SHaiyang Zhang } 58695fa0405SHaiyang Zhang 5871ce09e89SHaiyang Zhang #define NWADR_STR "NetworkAddress" 5881ce09e89SHaiyang Zhang #define NWADR_STRLEN 14 5891ce09e89SHaiyang Zhang 590e834da9aSVitaly Kuznetsov int rndis_filter_set_device_mac(struct net_device *ndev, char *mac) 5911ce09e89SHaiyang Zhang { 5922625466dSVitaly Kuznetsov struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); 5931ce09e89SHaiyang Zhang struct rndis_device *rdev = nvdev->extension; 5941ce09e89SHaiyang Zhang struct rndis_request *request; 5951ce09e89SHaiyang Zhang struct rndis_set_request *set; 5961ce09e89SHaiyang Zhang struct rndis_config_parameter_info *cpi; 5971ce09e89SHaiyang Zhang wchar_t *cfg_nwadr, *cfg_mac; 5981ce09e89SHaiyang Zhang struct rndis_set_complete *set_complete; 5991ce09e89SHaiyang Zhang char macstr[2*ETH_ALEN+1]; 6001ce09e89SHaiyang Zhang u32 extlen = sizeof(struct rndis_config_parameter_info) + 6011ce09e89SHaiyang Zhang 2*NWADR_STRLEN + 4*ETH_ALEN; 602999028ccSNicholas Mc Guire int ret; 6031ce09e89SHaiyang Zhang 6041ce09e89SHaiyang Zhang request = get_rndis_request(rdev, RNDIS_MSG_SET, 6051ce09e89SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 6061ce09e89SHaiyang Zhang if (!request) 6071ce09e89SHaiyang Zhang return -ENOMEM; 6081ce09e89SHaiyang Zhang 6091ce09e89SHaiyang Zhang set = &request->request_msg.msg.set_req; 6101ce09e89SHaiyang Zhang set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; 6111ce09e89SHaiyang Zhang set->info_buflen = extlen; 6121ce09e89SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 6131ce09e89SHaiyang Zhang set->dev_vc_handle = 0; 6141ce09e89SHaiyang Zhang 6151ce09e89SHaiyang Zhang cpi = (struct rndis_config_parameter_info *)((ulong)set + 6161ce09e89SHaiyang Zhang set->info_buf_offset); 6171ce09e89SHaiyang Zhang cpi->parameter_name_offset = 6181ce09e89SHaiyang Zhang sizeof(struct rndis_config_parameter_info); 6191ce09e89SHaiyang Zhang /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ 6201ce09e89SHaiyang Zhang cpi->parameter_name_length = 2*NWADR_STRLEN; 6211ce09e89SHaiyang Zhang cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; 6221ce09e89SHaiyang Zhang cpi->parameter_value_offset = 6231ce09e89SHaiyang Zhang cpi->parameter_name_offset + cpi->parameter_name_length; 6241ce09e89SHaiyang Zhang /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ 6251ce09e89SHaiyang Zhang cpi->parameter_value_length = 4*ETH_ALEN; 6261ce09e89SHaiyang Zhang 6271ce09e89SHaiyang Zhang cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); 6281ce09e89SHaiyang Zhang cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); 6291ce09e89SHaiyang Zhang ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, 6301ce09e89SHaiyang Zhang cfg_nwadr, NWADR_STRLEN); 6311ce09e89SHaiyang Zhang if (ret < 0) 6321ce09e89SHaiyang Zhang goto cleanup; 6331ce09e89SHaiyang Zhang snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); 6341ce09e89SHaiyang Zhang ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, 6351ce09e89SHaiyang Zhang cfg_mac, 2*ETH_ALEN); 6361ce09e89SHaiyang Zhang if (ret < 0) 6371ce09e89SHaiyang Zhang goto cleanup; 6381ce09e89SHaiyang Zhang 6391ce09e89SHaiyang Zhang ret = rndis_filter_send_request(rdev, request); 6401ce09e89SHaiyang Zhang if (ret != 0) 6411ce09e89SHaiyang Zhang goto cleanup; 6421ce09e89SHaiyang Zhang 6435362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 6445362855aSVitaly Kuznetsov 6451ce09e89SHaiyang Zhang set_complete = &request->response_msg.msg.set_complete; 646b02a8067SHaiyang Zhang if (set_complete->status != RNDIS_STATUS_SUCCESS) { 647b02a8067SHaiyang Zhang netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", 648b02a8067SHaiyang Zhang set_complete->status); 6491ce09e89SHaiyang Zhang ret = -EINVAL; 6501ce09e89SHaiyang Zhang } 6511ce09e89SHaiyang Zhang 6521ce09e89SHaiyang Zhang cleanup: 6531ce09e89SHaiyang Zhang put_rndis_request(rdev, request); 6541ce09e89SHaiyang Zhang return ret; 6551ce09e89SHaiyang Zhang } 6561ce09e89SHaiyang Zhang 657da19fcd0SLad, Prabhakar static int 658426d9541SVitaly Kuznetsov rndis_filter_set_offload_params(struct net_device *ndev, 6594a0e70aeSKY Srinivasan struct ndis_offload_params *req_offloads) 6604a0e70aeSKY Srinivasan { 6612625466dSVitaly Kuznetsov struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); 6624a0e70aeSKY Srinivasan struct rndis_device *rdev = nvdev->extension; 6634a0e70aeSKY Srinivasan struct rndis_request *request; 6644a0e70aeSKY Srinivasan struct rndis_set_request *set; 6654a0e70aeSKY Srinivasan struct ndis_offload_params *offload_params; 6664a0e70aeSKY Srinivasan struct rndis_set_complete *set_complete; 6674a0e70aeSKY Srinivasan u32 extlen = sizeof(struct ndis_offload_params); 668999028ccSNicholas Mc Guire int ret; 669af9893a3SKY Srinivasan u32 vsp_version = nvdev->nvsp_version; 670af9893a3SKY Srinivasan 671af9893a3SKY Srinivasan if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { 672af9893a3SKY Srinivasan extlen = VERSION_4_OFFLOAD_SIZE; 673af9893a3SKY Srinivasan /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support 674af9893a3SKY Srinivasan * UDP checksum offload. 675af9893a3SKY Srinivasan */ 676af9893a3SKY Srinivasan req_offloads->udp_ip_v4_csum = 0; 677af9893a3SKY Srinivasan req_offloads->udp_ip_v6_csum = 0; 678af9893a3SKY Srinivasan } 6794a0e70aeSKY Srinivasan 6804a0e70aeSKY Srinivasan request = get_rndis_request(rdev, RNDIS_MSG_SET, 6814a0e70aeSKY Srinivasan RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 6824a0e70aeSKY Srinivasan if (!request) 6834a0e70aeSKY Srinivasan return -ENOMEM; 6844a0e70aeSKY Srinivasan 6854a0e70aeSKY Srinivasan set = &request->request_msg.msg.set_req; 6864a0e70aeSKY Srinivasan set->oid = OID_TCP_OFFLOAD_PARAMETERS; 6874a0e70aeSKY Srinivasan set->info_buflen = extlen; 6884a0e70aeSKY Srinivasan set->info_buf_offset = sizeof(struct rndis_set_request); 6894a0e70aeSKY Srinivasan set->dev_vc_handle = 0; 6904a0e70aeSKY Srinivasan 6914a0e70aeSKY Srinivasan offload_params = (struct ndis_offload_params *)((ulong)set + 6924a0e70aeSKY Srinivasan set->info_buf_offset); 6934a0e70aeSKY Srinivasan *offload_params = *req_offloads; 6944a0e70aeSKY Srinivasan offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; 6954a0e70aeSKY Srinivasan offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; 6964a0e70aeSKY Srinivasan offload_params->header.size = extlen; 6974a0e70aeSKY Srinivasan 6984a0e70aeSKY Srinivasan ret = rndis_filter_send_request(rdev, request); 6994a0e70aeSKY Srinivasan if (ret != 0) 7004a0e70aeSKY Srinivasan goto cleanup; 7014a0e70aeSKY Srinivasan 7025362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 7034a0e70aeSKY Srinivasan set_complete = &request->response_msg.msg.set_complete; 7044a0e70aeSKY Srinivasan if (set_complete->status != RNDIS_STATUS_SUCCESS) { 705af9893a3SKY Srinivasan netdev_err(ndev, "Fail to set offload on host side:0x%x\n", 7064a0e70aeSKY Srinivasan set_complete->status); 7074a0e70aeSKY Srinivasan ret = -EINVAL; 7084a0e70aeSKY Srinivasan } 7094a0e70aeSKY Srinivasan 7104a0e70aeSKY Srinivasan cleanup: 7114a0e70aeSKY Srinivasan put_rndis_request(rdev, request); 7124a0e70aeSKY Srinivasan return ret; 7134a0e70aeSKY Srinivasan } 7141ce09e89SHaiyang Zhang 715962f3feeSstephen hemminger int rndis_filter_set_rss_param(struct rndis_device *rdev, 716962f3feeSstephen hemminger const u8 *rss_key, int num_queue) 7175b54dac8SHaiyang Zhang { 7183d541ac5SVitaly Kuznetsov struct net_device *ndev = rdev->ndev; 7195b54dac8SHaiyang Zhang struct rndis_request *request; 7205b54dac8SHaiyang Zhang struct rndis_set_request *set; 7215b54dac8SHaiyang Zhang struct rndis_set_complete *set_complete; 7225b54dac8SHaiyang Zhang u32 extlen = sizeof(struct ndis_recv_scale_param) + 723962f3feeSstephen hemminger 4 * ITAB_NUM + NETVSC_HASH_KEYLEN; 7245b54dac8SHaiyang Zhang struct ndis_recv_scale_param *rssp; 7255b54dac8SHaiyang Zhang u32 *itab; 7265b54dac8SHaiyang Zhang u8 *keyp; 727999028ccSNicholas Mc Guire int i, ret; 7285b54dac8SHaiyang Zhang 7295b54dac8SHaiyang Zhang request = get_rndis_request( 7305b54dac8SHaiyang Zhang rdev, RNDIS_MSG_SET, 7315b54dac8SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 7325b54dac8SHaiyang Zhang if (!request) 7335b54dac8SHaiyang Zhang return -ENOMEM; 7345b54dac8SHaiyang Zhang 7355b54dac8SHaiyang Zhang set = &request->request_msg.msg.set_req; 7365b54dac8SHaiyang Zhang set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; 7375b54dac8SHaiyang Zhang set->info_buflen = extlen; 7385b54dac8SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 7395b54dac8SHaiyang Zhang set->dev_vc_handle = 0; 7405b54dac8SHaiyang Zhang 7415b54dac8SHaiyang Zhang rssp = (struct ndis_recv_scale_param *)(set + 1); 7425b54dac8SHaiyang Zhang rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; 7435b54dac8SHaiyang Zhang rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; 7445b54dac8SHaiyang Zhang rssp->hdr.size = sizeof(struct ndis_recv_scale_param); 7455b54dac8SHaiyang Zhang rssp->flag = 0; 7465b54dac8SHaiyang Zhang rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | 7474c87454aSHaiyang Zhang NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | 7484c87454aSHaiyang Zhang NDIS_HASH_TCP_IPV6; 7495b54dac8SHaiyang Zhang rssp->indirect_tabsize = 4*ITAB_NUM; 7505b54dac8SHaiyang Zhang rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); 751962f3feeSstephen hemminger rssp->hashkey_size = NETVSC_HASH_KEYLEN; 7525b54dac8SHaiyang Zhang rssp->kashkey_offset = rssp->indirect_taboffset + 7535b54dac8SHaiyang Zhang rssp->indirect_tabsize; 7545b54dac8SHaiyang Zhang 7555b54dac8SHaiyang Zhang /* Set indirection table entries */ 7565b54dac8SHaiyang Zhang itab = (u32 *)(rssp + 1); 7575b54dac8SHaiyang Zhang for (i = 0; i < ITAB_NUM; i++) 758ff4a4419Sstephen hemminger itab[i] = rdev->ind_table[i]; 7595b54dac8SHaiyang Zhang 7605b54dac8SHaiyang Zhang /* Set hask key values */ 7615b54dac8SHaiyang Zhang keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); 762962f3feeSstephen hemminger memcpy(keyp, rss_key, NETVSC_HASH_KEYLEN); 7635b54dac8SHaiyang Zhang 7645b54dac8SHaiyang Zhang ret = rndis_filter_send_request(rdev, request); 7655b54dac8SHaiyang Zhang if (ret != 0) 7665b54dac8SHaiyang Zhang goto cleanup; 7675b54dac8SHaiyang Zhang 7685362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 7695b54dac8SHaiyang Zhang set_complete = &request->response_msg.msg.set_complete; 770962f3feeSstephen hemminger if (set_complete->status == RNDIS_STATUS_SUCCESS) 771962f3feeSstephen hemminger memcpy(rdev->rss_key, rss_key, NETVSC_HASH_KEYLEN); 772962f3feeSstephen hemminger else { 7735b54dac8SHaiyang Zhang netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", 7745b54dac8SHaiyang Zhang set_complete->status); 7755b54dac8SHaiyang Zhang ret = -EINVAL; 7765b54dac8SHaiyang Zhang } 7775b54dac8SHaiyang Zhang 7785b54dac8SHaiyang Zhang cleanup: 7795b54dac8SHaiyang Zhang put_rndis_request(rdev, request); 7805b54dac8SHaiyang Zhang return ret; 7815b54dac8SHaiyang Zhang } 7825b54dac8SHaiyang Zhang 78395fa0405SHaiyang Zhang static int rndis_filter_query_device_link_status(struct rndis_device *dev) 78495fa0405SHaiyang Zhang { 78595fa0405SHaiyang Zhang u32 size = sizeof(u32); 78695fa0405SHaiyang Zhang u32 link_status; 78795fa0405SHaiyang Zhang int ret; 78895fa0405SHaiyang Zhang 78995fa0405SHaiyang Zhang ret = rndis_filter_query_device(dev, 79095fa0405SHaiyang Zhang RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, 79195fa0405SHaiyang Zhang &link_status, &size); 79295fa0405SHaiyang Zhang 79395fa0405SHaiyang Zhang return ret; 79495fa0405SHaiyang Zhang } 79595fa0405SHaiyang Zhang 796b37879e6SHaiyang Zhang static int rndis_filter_query_link_speed(struct rndis_device *dev) 797b37879e6SHaiyang Zhang { 798b37879e6SHaiyang Zhang u32 size = sizeof(u32); 799b37879e6SHaiyang Zhang u32 link_speed; 800b37879e6SHaiyang Zhang struct net_device_context *ndc; 801b37879e6SHaiyang Zhang int ret; 802b37879e6SHaiyang Zhang 803b37879e6SHaiyang Zhang ret = rndis_filter_query_device(dev, RNDIS_OID_GEN_LINK_SPEED, 804b37879e6SHaiyang Zhang &link_speed, &size); 805b37879e6SHaiyang Zhang 806b37879e6SHaiyang Zhang if (!ret) { 807b37879e6SHaiyang Zhang ndc = netdev_priv(dev->ndev); 808b37879e6SHaiyang Zhang 809b37879e6SHaiyang Zhang /* The link speed reported from host is in 100bps unit, so 810b37879e6SHaiyang Zhang * we convert it to Mbps here. 811b37879e6SHaiyang Zhang */ 812b37879e6SHaiyang Zhang ndc->speed = link_speed / 10000; 813b37879e6SHaiyang Zhang } 814b37879e6SHaiyang Zhang 815b37879e6SHaiyang Zhang return ret; 816b37879e6SHaiyang Zhang } 817b37879e6SHaiyang Zhang 818d426b2e3SHaiyang Zhang int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) 81995fa0405SHaiyang Zhang { 82095fa0405SHaiyang Zhang struct rndis_request *request; 82195fa0405SHaiyang Zhang struct rndis_set_request *set; 82295fa0405SHaiyang Zhang struct rndis_set_complete *set_complete; 823999028ccSNicholas Mc Guire int ret; 82495fa0405SHaiyang Zhang 82551491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_SET, 82695fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + 82795fa0405SHaiyang Zhang sizeof(u32)); 82895fa0405SHaiyang Zhang if (!request) { 82995fa0405SHaiyang Zhang ret = -ENOMEM; 83095fa0405SHaiyang Zhang goto cleanup; 83195fa0405SHaiyang Zhang } 83295fa0405SHaiyang Zhang 83395fa0405SHaiyang Zhang /* Setup the rndis set */ 83495fa0405SHaiyang Zhang set = &request->request_msg.msg.set_req; 83595fa0405SHaiyang Zhang set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; 83695fa0405SHaiyang Zhang set->info_buflen = sizeof(u32); 83795fa0405SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 83895fa0405SHaiyang Zhang 83995fa0405SHaiyang Zhang memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), 84095fa0405SHaiyang Zhang &new_filter, sizeof(u32)); 84195fa0405SHaiyang Zhang 84295fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 84395fa0405SHaiyang Zhang if (ret != 0) 84495fa0405SHaiyang Zhang goto cleanup; 84595fa0405SHaiyang Zhang 8465362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 84795fa0405SHaiyang Zhang 84895fa0405SHaiyang Zhang set_complete = &request->response_msg.msg.set_complete; 84995fa0405SHaiyang Zhang cleanup: 85095fa0405SHaiyang Zhang if (request) 85195fa0405SHaiyang Zhang put_rndis_request(dev, request); 85295fa0405SHaiyang Zhang return ret; 85395fa0405SHaiyang Zhang } 85495fa0405SHaiyang Zhang 85595fa0405SHaiyang Zhang static int rndis_filter_init_device(struct rndis_device *dev) 85695fa0405SHaiyang Zhang { 85795fa0405SHaiyang Zhang struct rndis_request *request; 85895fa0405SHaiyang Zhang struct rndis_initialize_request *init; 85995fa0405SHaiyang Zhang struct rndis_initialize_complete *init_complete; 86095fa0405SHaiyang Zhang u32 status; 861999028ccSNicholas Mc Guire int ret; 8622625466dSVitaly Kuznetsov struct netvsc_device *nvdev = net_device_to_netvsc_device(dev->ndev); 86395fa0405SHaiyang Zhang 86451491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_INIT, 86595fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); 86695fa0405SHaiyang Zhang if (!request) { 86795fa0405SHaiyang Zhang ret = -ENOMEM; 86895fa0405SHaiyang Zhang goto cleanup; 86995fa0405SHaiyang Zhang } 87095fa0405SHaiyang Zhang 87195fa0405SHaiyang Zhang /* Setup the rndis set */ 87295fa0405SHaiyang Zhang init = &request->request_msg.msg.init_req; 87395fa0405SHaiyang Zhang init->major_ver = RNDIS_MAJOR_VERSION; 87495fa0405SHaiyang Zhang init->minor_ver = RNDIS_MINOR_VERSION; 875fb1d074eSHaiyang Zhang init->max_xfer_size = 0x4000; 87695fa0405SHaiyang Zhang 87795fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZING; 87895fa0405SHaiyang Zhang 87995fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 88095fa0405SHaiyang Zhang if (ret != 0) { 88195fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 88295fa0405SHaiyang Zhang goto cleanup; 88395fa0405SHaiyang Zhang } 88495fa0405SHaiyang Zhang 8855362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 88695fa0405SHaiyang Zhang 88795fa0405SHaiyang Zhang init_complete = &request->response_msg.msg.init_complete; 88895fa0405SHaiyang Zhang status = init_complete->status; 88995fa0405SHaiyang Zhang if (status == RNDIS_STATUS_SUCCESS) { 89095fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZED; 8917c3877f2SHaiyang Zhang nvdev->max_pkt = init_complete->max_pkt_per_msg; 8927c3877f2SHaiyang Zhang nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; 89395fa0405SHaiyang Zhang ret = 0; 89495fa0405SHaiyang Zhang } else { 89595fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 89695fa0405SHaiyang Zhang ret = -EINVAL; 89795fa0405SHaiyang Zhang } 89895fa0405SHaiyang Zhang 89995fa0405SHaiyang Zhang cleanup: 90095fa0405SHaiyang Zhang if (request) 90195fa0405SHaiyang Zhang put_rndis_request(dev, request); 90295fa0405SHaiyang Zhang 90395fa0405SHaiyang Zhang return ret; 90495fa0405SHaiyang Zhang } 90595fa0405SHaiyang Zhang 90646b4f7f5Sstephen hemminger static bool netvsc_device_idle(const struct netvsc_device *nvdev) 90746b4f7f5Sstephen hemminger { 90846b4f7f5Sstephen hemminger int i; 90946b4f7f5Sstephen hemminger 91046b4f7f5Sstephen hemminger if (atomic_read(&nvdev->num_outstanding_recvs) > 0) 91146b4f7f5Sstephen hemminger return false; 91246b4f7f5Sstephen hemminger 91346b4f7f5Sstephen hemminger for (i = 0; i < nvdev->num_chn; i++) { 91446b4f7f5Sstephen hemminger const struct netvsc_channel *nvchan = &nvdev->chan_table[i]; 91546b4f7f5Sstephen hemminger 91646b4f7f5Sstephen hemminger if (atomic_read(&nvchan->queue_sends) > 0) 91746b4f7f5Sstephen hemminger return false; 91846b4f7f5Sstephen hemminger } 91946b4f7f5Sstephen hemminger 92046b4f7f5Sstephen hemminger return true; 92146b4f7f5Sstephen hemminger } 92246b4f7f5Sstephen hemminger 92395fa0405SHaiyang Zhang static void rndis_filter_halt_device(struct rndis_device *dev) 92495fa0405SHaiyang Zhang { 92595fa0405SHaiyang Zhang struct rndis_request *request; 92695fa0405SHaiyang Zhang struct rndis_halt_request *halt; 9273d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); 9283d541ac5SVitaly Kuznetsov struct netvsc_device *nvdev = net_device_ctx->nvdev; 9293d541ac5SVitaly Kuznetsov struct hv_device *hdev = net_device_ctx->device_ctx; 930ae9e63bbSHaiyang Zhang ulong flags; 93195fa0405SHaiyang Zhang 93295fa0405SHaiyang Zhang /* Attempt to do a rndis device halt */ 93351491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_HALT, 93495fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); 93595fa0405SHaiyang Zhang if (!request) 93695fa0405SHaiyang Zhang goto cleanup; 93795fa0405SHaiyang Zhang 93895fa0405SHaiyang Zhang /* Setup the rndis set */ 93995fa0405SHaiyang Zhang halt = &request->request_msg.msg.halt_req; 94095fa0405SHaiyang Zhang halt->req_id = atomic_inc_return(&dev->new_req_id); 94195fa0405SHaiyang Zhang 94295fa0405SHaiyang Zhang /* Ignore return since this msg is optional. */ 94395fa0405SHaiyang Zhang rndis_filter_send_request(dev, request); 94495fa0405SHaiyang Zhang 94595fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 94695fa0405SHaiyang Zhang 94795fa0405SHaiyang Zhang cleanup: 948ae9e63bbSHaiyang Zhang spin_lock_irqsave(&hdev->channel->inbound_lock, flags); 949ae9e63bbSHaiyang Zhang nvdev->destroy = true; 950ae9e63bbSHaiyang Zhang spin_unlock_irqrestore(&hdev->channel->inbound_lock, flags); 951ae9e63bbSHaiyang Zhang 952ae9e63bbSHaiyang Zhang /* Wait for all send completions */ 95346b4f7f5Sstephen hemminger wait_event(nvdev->wait_drain, netvsc_device_idle(nvdev)); 954ae9e63bbSHaiyang Zhang 95595fa0405SHaiyang Zhang if (request) 95695fa0405SHaiyang Zhang put_rndis_request(dev, request); 95795fa0405SHaiyang Zhang } 95895fa0405SHaiyang Zhang 95995fa0405SHaiyang Zhang static int rndis_filter_open_device(struct rndis_device *dev) 96095fa0405SHaiyang Zhang { 96195fa0405SHaiyang Zhang int ret; 96295fa0405SHaiyang Zhang 96395fa0405SHaiyang Zhang if (dev->state != RNDIS_DEV_INITIALIZED) 96495fa0405SHaiyang Zhang return 0; 96595fa0405SHaiyang Zhang 96695fa0405SHaiyang Zhang ret = rndis_filter_set_packet_filter(dev, 96795fa0405SHaiyang Zhang NDIS_PACKET_TYPE_BROADCAST | 96895fa0405SHaiyang Zhang NDIS_PACKET_TYPE_ALL_MULTICAST | 96995fa0405SHaiyang Zhang NDIS_PACKET_TYPE_DIRECTED); 97095fa0405SHaiyang Zhang if (ret == 0) 97195fa0405SHaiyang Zhang dev->state = RNDIS_DEV_DATAINITIALIZED; 97295fa0405SHaiyang Zhang 97395fa0405SHaiyang Zhang return ret; 97495fa0405SHaiyang Zhang } 97595fa0405SHaiyang Zhang 97695fa0405SHaiyang Zhang static int rndis_filter_close_device(struct rndis_device *dev) 97795fa0405SHaiyang Zhang { 97895fa0405SHaiyang Zhang int ret; 97995fa0405SHaiyang Zhang 98095fa0405SHaiyang Zhang if (dev->state != RNDIS_DEV_DATAINITIALIZED) 98195fa0405SHaiyang Zhang return 0; 98295fa0405SHaiyang Zhang 98395fa0405SHaiyang Zhang ret = rndis_filter_set_packet_filter(dev, 0); 984c3582a2cSHaiyang Zhang if (ret == -ENODEV) 985c3582a2cSHaiyang Zhang ret = 0; 986c3582a2cSHaiyang Zhang 98795fa0405SHaiyang Zhang if (ret == 0) 98895fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZED; 98995fa0405SHaiyang Zhang 99095fa0405SHaiyang Zhang return ret; 99195fa0405SHaiyang Zhang } 99295fa0405SHaiyang Zhang 9935b54dac8SHaiyang Zhang static void netvsc_sc_open(struct vmbus_channel *new_sc) 9945b54dac8SHaiyang Zhang { 9953d541ac5SVitaly Kuznetsov struct net_device *ndev = 9963d541ac5SVitaly Kuznetsov hv_get_drvdata(new_sc->primary_channel->device_obj); 9972625466dSVitaly Kuznetsov struct netvsc_device *nvscdev = net_device_to_netvsc_device(ndev); 9985b54dac8SHaiyang Zhang u16 chn_index = new_sc->offermsg.offer.sub_channel_index; 9996de38af6Sstephen hemminger struct netvsc_channel *nvchan; 10006de38af6Sstephen hemminger int ret; 10015b54dac8SHaiyang Zhang 10025b54dac8SHaiyang Zhang if (chn_index >= nvscdev->num_chn) 10035b54dac8SHaiyang Zhang return; 10045b54dac8SHaiyang Zhang 10056de38af6Sstephen hemminger nvchan = nvscdev->chan_table + chn_index; 10066de38af6Sstephen hemminger nvchan->mrc.buf 1007b8b835a8Sstephen hemminger = vzalloc(NETVSC_RECVSLOT_MAX * sizeof(struct recv_comp_data)); 1008c0b558e5SHaiyang Zhang 10096de38af6Sstephen hemminger if (!nvchan->mrc.buf) 10106de38af6Sstephen hemminger return; 10116de38af6Sstephen hemminger 10125b54dac8SHaiyang Zhang ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, 10135b54dac8SHaiyang Zhang nvscdev->ring_size * PAGE_SIZE, NULL, 0, 10146de38af6Sstephen hemminger netvsc_channel_cb, nvchan); 10155b54dac8SHaiyang Zhang 10165b54dac8SHaiyang Zhang if (ret == 0) 10176de38af6Sstephen hemminger nvchan->channel = new_sc; 10183f735131SHaiyang Zhang 10196de38af6Sstephen hemminger napi_enable(&nvchan->napi); 102015a863bfSstephen hemminger 102143c7bd1fSstephen hemminger if (refcount_dec_and_test(&nvscdev->sc_offered)) 10223f735131SHaiyang Zhang complete(&nvscdev->channel_init_wait); 10235b54dac8SHaiyang Zhang } 10245b54dac8SHaiyang Zhang 102595fa0405SHaiyang Zhang int rndis_filter_device_add(struct hv_device *dev, 10262c7f83caSstephen hemminger struct netvsc_device_info *device_info) 102795fa0405SHaiyang Zhang { 10283d541ac5SVitaly Kuznetsov struct net_device *net = hv_get_drvdata(dev); 10293d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(net); 103095fa0405SHaiyang Zhang struct netvsc_device *net_device; 103195fa0405SHaiyang Zhang struct rndis_device *rndis_device; 103223312a3bSstephen hemminger struct ndis_offload hwcaps; 10334a0e70aeSKY Srinivasan struct ndis_offload_params offloads; 10345b54dac8SHaiyang Zhang struct nvsp_message *init_packet; 10355b54dac8SHaiyang Zhang struct ndis_recv_scale_cap rsscap; 10365b54dac8SHaiyang Zhang u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); 103723312a3bSstephen hemminger unsigned int gso_max_size = GSO_MAX_SIZE; 103843c7bd1fSstephen hemminger u32 mtu, size, num_rss_qs; 1039e01ec219SKY Srinivasan const struct cpumask *node_cpu_mask; 1040e01ec219SKY Srinivasan u32 num_possible_rss_qs; 1041ff4a4419Sstephen hemminger int i, ret; 104295fa0405SHaiyang Zhang 104395fa0405SHaiyang Zhang rndis_device = get_rndis_device(); 104495fa0405SHaiyang Zhang if (!rndis_device) 104595fa0405SHaiyang Zhang return -ENODEV; 104695fa0405SHaiyang Zhang 104795fa0405SHaiyang Zhang /* 104895fa0405SHaiyang Zhang * Let the inner driver handle this first to create the netvsc channel 104995fa0405SHaiyang Zhang * NOTE! Once the channel is created, we may get a receive callback 105095fa0405SHaiyang Zhang * (RndisFilterOnReceive()) before this call is completed 105195fa0405SHaiyang Zhang */ 10522c7f83caSstephen hemminger ret = netvsc_device_add(dev, device_info); 105395fa0405SHaiyang Zhang if (ret != 0) { 105495fa0405SHaiyang Zhang kfree(rndis_device); 105595fa0405SHaiyang Zhang return ret; 105695fa0405SHaiyang Zhang } 105795fa0405SHaiyang Zhang 105895fa0405SHaiyang Zhang /* Initialize the rndis device */ 10593d541ac5SVitaly Kuznetsov net_device = net_device_ctx->nvdev; 106059995370SAndrew Schwartzmeyer net_device->max_chn = 1; 10615b54dac8SHaiyang Zhang net_device->num_chn = 1; 106295fa0405SHaiyang Zhang 106343c7bd1fSstephen hemminger refcount_set(&net_device->sc_offered, 0); 1064b3e6b82aSKY Srinivasan 106595fa0405SHaiyang Zhang net_device->extension = rndis_device; 10663d541ac5SVitaly Kuznetsov rndis_device->ndev = net; 106795fa0405SHaiyang Zhang 106895fa0405SHaiyang Zhang /* Send the rndis initialization message */ 106995fa0405SHaiyang Zhang ret = rndis_filter_init_device(rndis_device); 107095fa0405SHaiyang Zhang if (ret != 0) { 10712289f0aaSstephen hemminger rndis_filter_device_remove(dev, net_device); 10725243e7bdSHaiyang Zhang return ret; 107395fa0405SHaiyang Zhang } 107495fa0405SHaiyang Zhang 10754d3c9d37SHaiyang Zhang /* Get the MTU from the host */ 10764d3c9d37SHaiyang Zhang size = sizeof(u32); 10774d3c9d37SHaiyang Zhang ret = rndis_filter_query_device(rndis_device, 10784d3c9d37SHaiyang Zhang RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, 10794d3c9d37SHaiyang Zhang &mtu, &size); 10800a1275caSVitaly Kuznetsov if (ret == 0 && size == sizeof(u32) && mtu < net->mtu) 10810a1275caSVitaly Kuznetsov net->mtu = mtu; 10824d3c9d37SHaiyang Zhang 108395fa0405SHaiyang Zhang /* Get the mac address */ 108495fa0405SHaiyang Zhang ret = rndis_filter_query_device_mac(rndis_device); 108595fa0405SHaiyang Zhang if (ret != 0) { 10862289f0aaSstephen hemminger rndis_filter_device_remove(dev, net_device); 10875243e7bdSHaiyang Zhang return ret; 108895fa0405SHaiyang Zhang } 108995fa0405SHaiyang Zhang 109095fa0405SHaiyang Zhang memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); 109195fa0405SHaiyang Zhang 109223312a3bSstephen hemminger /* Find HW offload capabilities */ 109323312a3bSstephen hemminger ret = rndis_query_hwcaps(rndis_device, &hwcaps); 109423312a3bSstephen hemminger if (ret != 0) { 10952289f0aaSstephen hemminger rndis_filter_device_remove(dev, net_device); 109623312a3bSstephen hemminger return ret; 109723312a3bSstephen hemminger } 109823312a3bSstephen hemminger 109923312a3bSstephen hemminger /* A value of zero means "no change"; now turn on what we want. */ 11004a0e70aeSKY Srinivasan memset(&offloads, 0, sizeof(struct ndis_offload_params)); 110123312a3bSstephen hemminger 110223312a3bSstephen hemminger /* Linux does not care about IP checksum, always does in kernel */ 110323312a3bSstephen hemminger offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED; 110423312a3bSstephen hemminger 110523312a3bSstephen hemminger /* Compute tx offload settings based on hw capabilities */ 110623312a3bSstephen hemminger net->hw_features = NETIF_F_RXCSUM; 110723312a3bSstephen hemminger 110823312a3bSstephen hemminger if ((hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_ALL_TCP4) == NDIS_TXCSUM_ALL_TCP4) { 110923312a3bSstephen hemminger /* Can checksum TCP */ 111023312a3bSstephen hemminger net->hw_features |= NETIF_F_IP_CSUM; 111123312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_TCP; 111223312a3bSstephen hemminger 11134a0e70aeSKY Srinivasan offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 111423312a3bSstephen hemminger 111523312a3bSstephen hemminger if (hwcaps.lsov2.ip4_encap & NDIS_OFFLOAD_ENCAP_8023) { 11164a0e70aeSKY Srinivasan offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; 111723312a3bSstephen hemminger net->hw_features |= NETIF_F_TSO; 111823312a3bSstephen hemminger 111923312a3bSstephen hemminger if (hwcaps.lsov2.ip4_maxsz < gso_max_size) 112023312a3bSstephen hemminger gso_max_size = hwcaps.lsov2.ip4_maxsz; 112123312a3bSstephen hemminger } 112223312a3bSstephen hemminger 112323312a3bSstephen hemminger if (hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) { 112423312a3bSstephen hemminger offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 112523312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_UDP; 112623312a3bSstephen hemminger } 112723312a3bSstephen hemminger } 112823312a3bSstephen hemminger 112923312a3bSstephen hemminger if ((hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_ALL_TCP6) == NDIS_TXCSUM_ALL_TCP6) { 113023312a3bSstephen hemminger net->hw_features |= NETIF_F_IPV6_CSUM; 113123312a3bSstephen hemminger 113223312a3bSstephen hemminger offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 113323312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_TCP; 113423312a3bSstephen hemminger 113523312a3bSstephen hemminger if ((hwcaps.lsov2.ip6_encap & NDIS_OFFLOAD_ENCAP_8023) && 113623312a3bSstephen hemminger (hwcaps.lsov2.ip6_opts & NDIS_LSOV2_CAP_IP6) == NDIS_LSOV2_CAP_IP6) { 113723312a3bSstephen hemminger offloads.lso_v2_ipv6 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; 113823312a3bSstephen hemminger net->hw_features |= NETIF_F_TSO6; 113923312a3bSstephen hemminger 114023312a3bSstephen hemminger if (hwcaps.lsov2.ip6_maxsz < gso_max_size) 114123312a3bSstephen hemminger gso_max_size = hwcaps.lsov2.ip6_maxsz; 114223312a3bSstephen hemminger } 114323312a3bSstephen hemminger 114423312a3bSstephen hemminger if (hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_CAP_UDP6) { 114523312a3bSstephen hemminger offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 114623312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_UDP; 114723312a3bSstephen hemminger } 114823312a3bSstephen hemminger } 114923312a3bSstephen hemminger 115023312a3bSstephen hemminger netif_set_gso_max_size(net, gso_max_size); 11514a0e70aeSKY Srinivasan 1152426d9541SVitaly Kuznetsov ret = rndis_filter_set_offload_params(net, &offloads); 11534a0e70aeSKY Srinivasan if (ret) 11544a0e70aeSKY Srinivasan goto err_dev_remv; 11554a0e70aeSKY Srinivasan 115695fa0405SHaiyang Zhang rndis_filter_query_device_link_status(rndis_device); 115795fa0405SHaiyang Zhang 115895fa0405SHaiyang Zhang device_info->link_state = rndis_device->link_state; 115995fa0405SHaiyang Zhang 116093ba2222SVitaly Kuznetsov netdev_dbg(net, "Device MAC %pM link state %s\n", 116195fa0405SHaiyang Zhang rndis_device->hw_mac_adr, 116295fa0405SHaiyang Zhang device_info->link_state ? "down" : "up"); 116395fa0405SHaiyang Zhang 11645b54dac8SHaiyang Zhang if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) 11655b54dac8SHaiyang Zhang return 0; 11665b54dac8SHaiyang Zhang 1167b37879e6SHaiyang Zhang rndis_filter_query_link_speed(rndis_device); 1168b37879e6SHaiyang Zhang 11695b54dac8SHaiyang Zhang /* vRSS setup */ 11705b54dac8SHaiyang Zhang memset(&rsscap, 0, rsscap_size); 11715b54dac8SHaiyang Zhang ret = rndis_filter_query_device(rndis_device, 11725b54dac8SHaiyang Zhang OID_GEN_RECEIVE_SCALE_CAPABILITIES, 11735b54dac8SHaiyang Zhang &rsscap, &rsscap_size); 11745b54dac8SHaiyang Zhang if (ret || rsscap.num_recv_que < 2) 11755b54dac8SHaiyang Zhang goto out; 11765b54dac8SHaiyang Zhang 1177e01ec219SKY Srinivasan /* 1178e01ec219SKY Srinivasan * We will limit the VRSS channels to the number CPUs in the NUMA node 1179e01ec219SKY Srinivasan * the primary channel is currently bound to. 11803071ada4Sstephen hemminger * 11813071ada4Sstephen hemminger * This also guarantees that num_possible_rss_qs <= num_online_cpus 1182e01ec219SKY Srinivasan */ 1183e01ec219SKY Srinivasan node_cpu_mask = cpumask_of_node(cpu_to_node(dev->channel->target_cpu)); 11843071ada4Sstephen hemminger num_possible_rss_qs = min_t(u32, cpumask_weight(node_cpu_mask), 11853071ada4Sstephen hemminger rsscap.num_recv_que); 11863071ada4Sstephen hemminger 11873071ada4Sstephen hemminger net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, num_possible_rss_qs); 11888ebdcc52SAndrew Schwartzmeyer 11898ebdcc52SAndrew Schwartzmeyer /* We will use the given number of channels if available. */ 11903071ada4Sstephen hemminger net_device->num_chn = min(net_device->max_chn, device_info->num_chn); 1191ff4a4419Sstephen hemminger 1192ff4a4419Sstephen hemminger for (i = 0; i < ITAB_NUM; i++) 1193ff4a4419Sstephen hemminger rndis_device->ind_table[i] = ethtool_rxfh_indir_default(i, 1194ff4a4419Sstephen hemminger net_device->num_chn); 1195ff4a4419Sstephen hemminger 11963071ada4Sstephen hemminger num_rss_qs = net_device->num_chn - 1; 11973071ada4Sstephen hemminger if (num_rss_qs == 0) 11983071ada4Sstephen hemminger return 0; 11995b54dac8SHaiyang Zhang 120043c7bd1fSstephen hemminger refcount_set(&net_device->sc_offered, num_rss_qs); 12015b54dac8SHaiyang Zhang vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); 12025b54dac8SHaiyang Zhang 12035b54dac8SHaiyang Zhang init_packet = &net_device->channel_init_pkt; 12045b54dac8SHaiyang Zhang memset(init_packet, 0, sizeof(struct nvsp_message)); 12055b54dac8SHaiyang Zhang init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; 12065b54dac8SHaiyang Zhang init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; 12075b54dac8SHaiyang Zhang init_packet->msg.v5_msg.subchn_req.num_subchannels = 12085b54dac8SHaiyang Zhang net_device->num_chn - 1; 12095b54dac8SHaiyang Zhang ret = vmbus_sendpacket(dev->channel, init_packet, 12105b54dac8SHaiyang Zhang sizeof(struct nvsp_message), 12115b54dac8SHaiyang Zhang (unsigned long)init_packet, 12125b54dac8SHaiyang Zhang VM_PKT_DATA_INBAND, 12135b54dac8SHaiyang Zhang VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); 12145b54dac8SHaiyang Zhang if (ret) 12155b54dac8SHaiyang Zhang goto out; 12165362855aSVitaly Kuznetsov 121743c7bd1fSstephen hemminger if (init_packet->msg.v5_msg.subchn_comp.status != NVSP_STAT_SUCCESS) { 12185b54dac8SHaiyang Zhang ret = -ENODEV; 12195b54dac8SHaiyang Zhang goto out; 12205b54dac8SHaiyang Zhang } 122143c7bd1fSstephen hemminger wait_for_completion(&net_device->channel_init_wait); 122243c7bd1fSstephen hemminger 12235b54dac8SHaiyang Zhang net_device->num_chn = 1 + 12245b54dac8SHaiyang Zhang init_packet->msg.v5_msg.subchn_comp.num_subchannels; 12255b54dac8SHaiyang Zhang 122643c7bd1fSstephen hemminger /* ignore failues from setting rss parameters, still have channels */ 122743c7bd1fSstephen hemminger rndis_filter_set_rss_param(rndis_device, netvsc_hash_key, 1228962f3feeSstephen hemminger net_device->num_chn); 12295b54dac8SHaiyang Zhang out: 123059995370SAndrew Schwartzmeyer if (ret) { 123159995370SAndrew Schwartzmeyer net_device->max_chn = 1; 12325b54dac8SHaiyang Zhang net_device->num_chn = 1; 123359995370SAndrew Schwartzmeyer } 1234b3e6b82aSKY Srinivasan 12355b54dac8SHaiyang Zhang return 0; /* return 0 because primary channel can be used alone */ 12364a0e70aeSKY Srinivasan 12374a0e70aeSKY Srinivasan err_dev_remv: 12382289f0aaSstephen hemminger rndis_filter_device_remove(dev, net_device); 12394a0e70aeSKY Srinivasan return ret; 124095fa0405SHaiyang Zhang } 124195fa0405SHaiyang Zhang 12422289f0aaSstephen hemminger void rndis_filter_device_remove(struct hv_device *dev, 12432289f0aaSstephen hemminger struct netvsc_device *net_dev) 124495fa0405SHaiyang Zhang { 124595fa0405SHaiyang Zhang struct rndis_device *rndis_dev = net_dev->extension; 1246d66ab514SHaiyang Zhang 124795fa0405SHaiyang Zhang /* Halt and release the rndis device */ 124895fa0405SHaiyang Zhang rndis_filter_halt_device(rndis_dev); 124995fa0405SHaiyang Zhang 125095fa0405SHaiyang Zhang kfree(rndis_dev); 125195fa0405SHaiyang Zhang net_dev->extension = NULL; 125295fa0405SHaiyang Zhang 125395fa0405SHaiyang Zhang netvsc_device_remove(dev); 125495fa0405SHaiyang Zhang } 125595fa0405SHaiyang Zhang 12562f5fa6c8SVitaly Kuznetsov int rndis_filter_open(struct netvsc_device *nvdev) 125795fa0405SHaiyang Zhang { 12582f5fa6c8SVitaly Kuznetsov if (!nvdev) 125995fa0405SHaiyang Zhang return -EINVAL; 126095fa0405SHaiyang Zhang 12612f5fa6c8SVitaly Kuznetsov if (atomic_inc_return(&nvdev->open_cnt) != 1) 126284bf9cefSKY Srinivasan return 0; 126384bf9cefSKY Srinivasan 12642f5fa6c8SVitaly Kuznetsov return rndis_filter_open_device(nvdev->extension); 126595fa0405SHaiyang Zhang } 126695fa0405SHaiyang Zhang 12672f5fa6c8SVitaly Kuznetsov int rndis_filter_close(struct netvsc_device *nvdev) 126895fa0405SHaiyang Zhang { 12695fccab3bSHaiyang Zhang if (!nvdev) 127095fa0405SHaiyang Zhang return -EINVAL; 127195fa0405SHaiyang Zhang 127284bf9cefSKY Srinivasan if (atomic_dec_return(&nvdev->open_cnt) != 0) 127384bf9cefSKY Srinivasan return 0; 127484bf9cefSKY Srinivasan 12755fccab3bSHaiyang Zhang return rndis_filter_close_device(nvdev->extension); 127695fa0405SHaiyang Zhang } 1277