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> 3127f5aa92Sstephen hemminger #include <linux/rtnetlink.h> 3295fa0405SHaiyang Zhang 3395fa0405SHaiyang Zhang #include "hyperv_net.h" 3495fa0405SHaiyang Zhang 354f19c0d8Sstephen hemminger static void rndis_set_multicast(struct work_struct *w); 3695fa0405SHaiyang Zhang 375b54dac8SHaiyang Zhang #define RNDIS_EXT_LEN PAGE_SIZE 3895fa0405SHaiyang Zhang struct rndis_request { 3995fa0405SHaiyang Zhang struct list_head list_ent; 4095fa0405SHaiyang Zhang struct completion wait_event; 4195fa0405SHaiyang Zhang 4295fa0405SHaiyang Zhang struct rndis_message response_msg; 43a3a6cab5SHaiyang Zhang /* 44a3a6cab5SHaiyang Zhang * The buffer for extended info after the RNDIS response message. It's 45a3a6cab5SHaiyang Zhang * referenced based on the data offset in the RNDIS message. Its size 46a3a6cab5SHaiyang Zhang * is enough for current needs, and should be sufficient for the near 47a3a6cab5SHaiyang Zhang * future. 48a3a6cab5SHaiyang Zhang */ 49a3a6cab5SHaiyang Zhang u8 response_ext[RNDIS_EXT_LEN]; 5095fa0405SHaiyang Zhang 5195fa0405SHaiyang Zhang /* Simplify allocation by having a netvsc packet inline */ 5295fa0405SHaiyang Zhang struct hv_netvsc_packet pkt; 530f48917bSHaiyang Zhang 5495fa0405SHaiyang Zhang struct rndis_message request_msg; 550f48917bSHaiyang Zhang /* 56a3a6cab5SHaiyang Zhang * The buffer for the extended info after the RNDIS request message. 57a3a6cab5SHaiyang Zhang * It is referenced and sized in a similar way as response_ext. 580f48917bSHaiyang Zhang */ 59a3a6cab5SHaiyang Zhang u8 request_ext[RNDIS_EXT_LEN]; 6095fa0405SHaiyang Zhang }; 6195fa0405SHaiyang Zhang 62962f3feeSstephen hemminger static const u8 netvsc_hash_key[NETVSC_HASH_KEYLEN] = { 63962f3feeSstephen hemminger 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 64962f3feeSstephen hemminger 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 65962f3feeSstephen hemminger 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, 66962f3feeSstephen hemminger 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, 67962f3feeSstephen hemminger 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa 68962f3feeSstephen hemminger }; 69962f3feeSstephen hemminger 7095fa0405SHaiyang Zhang static struct rndis_device *get_rndis_device(void) 7195fa0405SHaiyang Zhang { 7295fa0405SHaiyang Zhang struct rndis_device *device; 7395fa0405SHaiyang Zhang 7495fa0405SHaiyang Zhang device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); 7595fa0405SHaiyang Zhang if (!device) 7695fa0405SHaiyang Zhang return NULL; 7795fa0405SHaiyang Zhang 7895fa0405SHaiyang Zhang spin_lock_init(&device->request_lock); 7995fa0405SHaiyang Zhang 8095fa0405SHaiyang Zhang INIT_LIST_HEAD(&device->req_list); 814f19c0d8Sstephen hemminger INIT_WORK(&device->mcast_work, rndis_set_multicast); 8295fa0405SHaiyang Zhang 8395fa0405SHaiyang Zhang device->state = RNDIS_DEV_UNINITIALIZED; 8495fa0405SHaiyang Zhang 8595fa0405SHaiyang Zhang return device; 8695fa0405SHaiyang Zhang } 8795fa0405SHaiyang Zhang 8895fa0405SHaiyang Zhang static struct rndis_request *get_rndis_request(struct rndis_device *dev, 8995fa0405SHaiyang Zhang u32 msg_type, 9095fa0405SHaiyang Zhang u32 msg_len) 9195fa0405SHaiyang Zhang { 9295fa0405SHaiyang Zhang struct rndis_request *request; 9395fa0405SHaiyang Zhang struct rndis_message *rndis_msg; 9495fa0405SHaiyang Zhang struct rndis_set_request *set; 9595fa0405SHaiyang Zhang unsigned long flags; 9695fa0405SHaiyang Zhang 9795fa0405SHaiyang Zhang request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); 9895fa0405SHaiyang Zhang if (!request) 9995fa0405SHaiyang Zhang return NULL; 10095fa0405SHaiyang Zhang 10195fa0405SHaiyang Zhang init_completion(&request->wait_event); 10295fa0405SHaiyang Zhang 10395fa0405SHaiyang Zhang rndis_msg = &request->request_msg; 10495fa0405SHaiyang Zhang rndis_msg->ndis_msg_type = msg_type; 10595fa0405SHaiyang Zhang rndis_msg->msg_len = msg_len; 10695fa0405SHaiyang Zhang 1075b54dac8SHaiyang Zhang request->pkt.q_idx = 0; 1085b54dac8SHaiyang Zhang 10995fa0405SHaiyang Zhang /* 11095fa0405SHaiyang Zhang * Set the request id. This field is always after the rndis header for 11195fa0405SHaiyang Zhang * request/response packet types so we just used the SetRequest as a 11295fa0405SHaiyang Zhang * template 11395fa0405SHaiyang Zhang */ 11495fa0405SHaiyang Zhang set = &rndis_msg->msg.set_req; 11595fa0405SHaiyang Zhang set->req_id = atomic_inc_return(&dev->new_req_id); 11695fa0405SHaiyang Zhang 11795fa0405SHaiyang Zhang /* Add to the request list */ 11895fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 11995fa0405SHaiyang Zhang list_add_tail(&request->list_ent, &dev->req_list); 12095fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 12195fa0405SHaiyang Zhang 12295fa0405SHaiyang Zhang return request; 12395fa0405SHaiyang Zhang } 12495fa0405SHaiyang Zhang 12595fa0405SHaiyang Zhang static void put_rndis_request(struct rndis_device *dev, 12695fa0405SHaiyang Zhang struct rndis_request *req) 12795fa0405SHaiyang Zhang { 12895fa0405SHaiyang Zhang unsigned long flags; 12995fa0405SHaiyang Zhang 13095fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 13195fa0405SHaiyang Zhang list_del(&req->list_ent); 13295fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 13395fa0405SHaiyang Zhang 13495fa0405SHaiyang Zhang kfree(req); 13595fa0405SHaiyang Zhang } 13695fa0405SHaiyang Zhang 13779cf1baeSStephen Hemminger static void dump_rndis_message(struct net_device *netdev, 138dc54a08cSstephen hemminger const struct rndis_message *rndis_msg) 13995fa0405SHaiyang Zhang { 14095fa0405SHaiyang Zhang switch (rndis_msg->ndis_msg_type) { 14151491167SLinus Walleij case RNDIS_MSG_PACKET: 14251491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " 14395fa0405SHaiyang Zhang "data offset %u data len %u, # oob %u, " 14495fa0405SHaiyang Zhang "oob offset %u, oob len %u, pkt offset %u, " 14595fa0405SHaiyang Zhang "pkt len %u\n", 14695fa0405SHaiyang Zhang rndis_msg->msg_len, 14795fa0405SHaiyang Zhang rndis_msg->msg.pkt.data_offset, 14895fa0405SHaiyang Zhang rndis_msg->msg.pkt.data_len, 14995fa0405SHaiyang Zhang rndis_msg->msg.pkt.num_oob_data_elements, 15095fa0405SHaiyang Zhang rndis_msg->msg.pkt.oob_data_offset, 15195fa0405SHaiyang Zhang rndis_msg->msg.pkt.oob_data_len, 15295fa0405SHaiyang Zhang rndis_msg->msg.pkt.per_pkt_info_offset, 15395fa0405SHaiyang Zhang rndis_msg->msg.pkt.per_pkt_info_len); 15495fa0405SHaiyang Zhang break; 15595fa0405SHaiyang Zhang 15651491167SLinus Walleij case RNDIS_MSG_INIT_C: 15751491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_INIT_C " 15895fa0405SHaiyang Zhang "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " 15995fa0405SHaiyang Zhang "device flags %d, max xfer size 0x%x, max pkts %u, " 16095fa0405SHaiyang Zhang "pkt aligned %u)\n", 16195fa0405SHaiyang Zhang rndis_msg->msg_len, 16295fa0405SHaiyang Zhang rndis_msg->msg.init_complete.req_id, 16395fa0405SHaiyang Zhang rndis_msg->msg.init_complete.status, 16495fa0405SHaiyang Zhang rndis_msg->msg.init_complete.major_ver, 16595fa0405SHaiyang Zhang rndis_msg->msg.init_complete.minor_ver, 16695fa0405SHaiyang Zhang rndis_msg->msg.init_complete.dev_flags, 16795fa0405SHaiyang Zhang rndis_msg->msg.init_complete.max_xfer_size, 16895fa0405SHaiyang Zhang rndis_msg->msg.init_complete. 16995fa0405SHaiyang Zhang max_pkt_per_msg, 17095fa0405SHaiyang Zhang rndis_msg->msg.init_complete. 17195fa0405SHaiyang Zhang pkt_alignment_factor); 17295fa0405SHaiyang Zhang break; 17395fa0405SHaiyang Zhang 17451491167SLinus Walleij case RNDIS_MSG_QUERY_C: 17551491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " 17695fa0405SHaiyang Zhang "(len %u, id 0x%x, status 0x%x, buf len %u, " 17795fa0405SHaiyang Zhang "buf offset %u)\n", 17895fa0405SHaiyang Zhang rndis_msg->msg_len, 17995fa0405SHaiyang Zhang rndis_msg->msg.query_complete.req_id, 18095fa0405SHaiyang Zhang rndis_msg->msg.query_complete.status, 18195fa0405SHaiyang Zhang rndis_msg->msg.query_complete. 18295fa0405SHaiyang Zhang info_buflen, 18395fa0405SHaiyang Zhang rndis_msg->msg.query_complete. 18495fa0405SHaiyang Zhang info_buf_offset); 18595fa0405SHaiyang Zhang break; 18695fa0405SHaiyang Zhang 18751491167SLinus Walleij case RNDIS_MSG_SET_C: 18895fa0405SHaiyang Zhang netdev_dbg(netdev, 18951491167SLinus Walleij "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", 19095fa0405SHaiyang Zhang rndis_msg->msg_len, 19195fa0405SHaiyang Zhang rndis_msg->msg.set_complete.req_id, 19295fa0405SHaiyang Zhang rndis_msg->msg.set_complete.status); 19395fa0405SHaiyang Zhang break; 19495fa0405SHaiyang Zhang 19551491167SLinus Walleij case RNDIS_MSG_INDICATE: 19651491167SLinus Walleij netdev_dbg(netdev, "RNDIS_MSG_INDICATE " 19795fa0405SHaiyang Zhang "(len %u, status 0x%x, buf len %u, buf offset %u)\n", 19895fa0405SHaiyang Zhang rndis_msg->msg_len, 19995fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status, 20095fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status_buflen, 20195fa0405SHaiyang Zhang rndis_msg->msg.indicate_status.status_buf_offset); 20295fa0405SHaiyang Zhang break; 20395fa0405SHaiyang Zhang 20495fa0405SHaiyang Zhang default: 20595fa0405SHaiyang Zhang netdev_dbg(netdev, "0x%x (len %u)\n", 20695fa0405SHaiyang Zhang rndis_msg->ndis_msg_type, 20795fa0405SHaiyang Zhang rndis_msg->msg_len); 20895fa0405SHaiyang Zhang break; 20995fa0405SHaiyang Zhang } 21095fa0405SHaiyang Zhang } 21195fa0405SHaiyang Zhang 21295fa0405SHaiyang Zhang static int rndis_filter_send_request(struct rndis_device *dev, 21395fa0405SHaiyang Zhang struct rndis_request *req) 21495fa0405SHaiyang Zhang { 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; 21802b6de01Sstephen hemminger int ret; 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 244867047c4Sstephen hemminger rcu_read_lock_bh(); 245cfd8afd9SStephen Hemminger ret = netvsc_send(dev->ndev, packet, NULL, pb, NULL); 246867047c4Sstephen hemminger rcu_read_unlock_bh(); 247867047c4Sstephen hemminger 24895fa0405SHaiyang Zhang return ret; 24995fa0405SHaiyang Zhang } 25095fa0405SHaiyang Zhang 2511b07da51SHaiyang Zhang static void rndis_set_link_state(struct rndis_device *rdev, 2521b07da51SHaiyang Zhang struct rndis_request *request) 2531b07da51SHaiyang Zhang { 2541b07da51SHaiyang Zhang u32 link_status; 2551b07da51SHaiyang Zhang struct rndis_query_complete *query_complete; 2561b07da51SHaiyang Zhang 2571b07da51SHaiyang Zhang query_complete = &request->response_msg.msg.query_complete; 2581b07da51SHaiyang Zhang 2591b07da51SHaiyang Zhang if (query_complete->status == RNDIS_STATUS_SUCCESS && 2601b07da51SHaiyang Zhang query_complete->info_buflen == sizeof(u32)) { 2611b07da51SHaiyang Zhang memcpy(&link_status, (void *)((unsigned long)query_complete + 2621b07da51SHaiyang Zhang query_complete->info_buf_offset), sizeof(u32)); 2631b07da51SHaiyang Zhang rdev->link_state = link_status != 0; 2641b07da51SHaiyang Zhang } 2651b07da51SHaiyang Zhang } 2661b07da51SHaiyang Zhang 26795fa0405SHaiyang Zhang static void rndis_filter_receive_response(struct rndis_device *dev, 26895fa0405SHaiyang Zhang struct rndis_message *resp) 26995fa0405SHaiyang Zhang { 27095fa0405SHaiyang Zhang struct rndis_request *request = NULL; 27195fa0405SHaiyang Zhang bool found = false; 27295fa0405SHaiyang Zhang unsigned long flags; 2733d541ac5SVitaly Kuznetsov struct net_device *ndev = dev->ndev; 27495fa0405SHaiyang Zhang 27595fa0405SHaiyang Zhang spin_lock_irqsave(&dev->request_lock, flags); 27695fa0405SHaiyang Zhang list_for_each_entry(request, &dev->req_list, list_ent) { 27795fa0405SHaiyang Zhang /* 27895fa0405SHaiyang Zhang * All request/response message contains RequestId as the 1st 27995fa0405SHaiyang Zhang * field 28095fa0405SHaiyang Zhang */ 28195fa0405SHaiyang Zhang if (request->request_msg.msg.init_req.req_id 28295fa0405SHaiyang Zhang == resp->msg.init_complete.req_id) { 28395fa0405SHaiyang Zhang found = true; 28495fa0405SHaiyang Zhang break; 28595fa0405SHaiyang Zhang } 28695fa0405SHaiyang Zhang } 28795fa0405SHaiyang Zhang spin_unlock_irqrestore(&dev->request_lock, flags); 28895fa0405SHaiyang Zhang 28995fa0405SHaiyang Zhang if (found) { 290a3a6cab5SHaiyang Zhang if (resp->msg_len <= 291a3a6cab5SHaiyang Zhang sizeof(struct rndis_message) + RNDIS_EXT_LEN) { 29295fa0405SHaiyang Zhang memcpy(&request->response_msg, resp, 29395fa0405SHaiyang Zhang resp->msg_len); 2941b07da51SHaiyang Zhang if (request->request_msg.ndis_msg_type == 2951b07da51SHaiyang Zhang RNDIS_MSG_QUERY && request->request_msg.msg. 2961b07da51SHaiyang Zhang query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) 2971b07da51SHaiyang Zhang rndis_set_link_state(dev, request); 29895fa0405SHaiyang Zhang } else { 29995fa0405SHaiyang Zhang netdev_err(ndev, 30095fa0405SHaiyang Zhang "rndis response buffer overflow " 30195fa0405SHaiyang Zhang "detected (size %u max %zu)\n", 30295fa0405SHaiyang Zhang resp->msg_len, 30386eedaccSKY Srinivasan sizeof(struct rndis_message)); 30495fa0405SHaiyang Zhang 30595fa0405SHaiyang Zhang if (resp->ndis_msg_type == 30651491167SLinus Walleij RNDIS_MSG_RESET_C) { 30795fa0405SHaiyang Zhang /* does not have a request id field */ 30895fa0405SHaiyang Zhang request->response_msg.msg.reset_complete. 309007e5c8eSLinus Walleij status = RNDIS_STATUS_BUFFER_OVERFLOW; 31095fa0405SHaiyang Zhang } else { 31195fa0405SHaiyang Zhang request->response_msg.msg. 31295fa0405SHaiyang Zhang init_complete.status = 313007e5c8eSLinus Walleij RNDIS_STATUS_BUFFER_OVERFLOW; 31495fa0405SHaiyang Zhang } 31595fa0405SHaiyang Zhang } 31695fa0405SHaiyang Zhang 31795fa0405SHaiyang Zhang complete(&request->wait_event); 31895fa0405SHaiyang Zhang } else { 31995fa0405SHaiyang Zhang netdev_err(ndev, 32095fa0405SHaiyang Zhang "no rndis request found for this response " 32195fa0405SHaiyang Zhang "(id 0x%x res type 0x%x)\n", 32295fa0405SHaiyang Zhang resp->msg.init_complete.req_id, 32395fa0405SHaiyang Zhang resp->ndis_msg_type); 32495fa0405SHaiyang Zhang } 32595fa0405SHaiyang Zhang } 32695fa0405SHaiyang Zhang 3271f5f3a75SHaiyang Zhang /* 3281f5f3a75SHaiyang Zhang * Get the Per-Packet-Info with the specified type 3291f5f3a75SHaiyang Zhang * return NULL if not found. 3301f5f3a75SHaiyang Zhang */ 3311f5f3a75SHaiyang Zhang static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) 3321f5f3a75SHaiyang Zhang { 3331f5f3a75SHaiyang Zhang struct rndis_per_packet_info *ppi; 3341f5f3a75SHaiyang Zhang int len; 3351f5f3a75SHaiyang Zhang 3361f5f3a75SHaiyang Zhang if (rpkt->per_pkt_info_offset == 0) 3371f5f3a75SHaiyang Zhang return NULL; 3381f5f3a75SHaiyang Zhang 3391f5f3a75SHaiyang Zhang ppi = (struct rndis_per_packet_info *)((ulong)rpkt + 3401f5f3a75SHaiyang Zhang rpkt->per_pkt_info_offset); 3411f5f3a75SHaiyang Zhang len = rpkt->per_pkt_info_len; 3421f5f3a75SHaiyang Zhang 3431f5f3a75SHaiyang Zhang while (len > 0) { 3441f5f3a75SHaiyang Zhang if (ppi->type == type) 3451f5f3a75SHaiyang Zhang return (void *)((ulong)ppi + ppi->ppi_offset); 3461f5f3a75SHaiyang Zhang len -= ppi->size; 3471f5f3a75SHaiyang Zhang ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); 3481f5f3a75SHaiyang Zhang } 3491f5f3a75SHaiyang Zhang 3501f5f3a75SHaiyang Zhang return NULL; 3511f5f3a75SHaiyang Zhang } 3521f5f3a75SHaiyang Zhang 353dc54a08cSstephen hemminger static int rndis_filter_receive_data(struct net_device *ndev, 354345ac089SStephen Hemminger struct netvsc_device *nvdev, 355dc54a08cSstephen hemminger struct rndis_device *dev, 35695fa0405SHaiyang Zhang struct rndis_message *msg, 357dc54a08cSstephen hemminger struct vmbus_channel *channel, 358dc54a08cSstephen hemminger void *data, u32 data_buflen) 35995fa0405SHaiyang Zhang { 360dc54a08cSstephen hemminger struct rndis_packet *rndis_pkt = &msg->msg.pkt; 361dc54a08cSstephen hemminger const struct ndis_tcp_ip_checksum_info *csum_info; 362dc54a08cSstephen hemminger const struct ndis_pkt_8021q_info *vlan; 36395fa0405SHaiyang Zhang u32 data_offset; 36495fa0405SHaiyang Zhang 36595fa0405SHaiyang Zhang /* Remove the rndis header and pass it back up the stack */ 36695fa0405SHaiyang Zhang data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; 36795fa0405SHaiyang Zhang 368dc54a08cSstephen hemminger data_buflen -= data_offset; 3694b8a8bc9SWei Yongjun 3704b8a8bc9SWei Yongjun /* 3714b8a8bc9SWei Yongjun * Make sure we got a valid RNDIS message, now total_data_buflen 3724b8a8bc9SWei Yongjun * should be the data packet size plus the trailer padding size 3734b8a8bc9SWei Yongjun */ 374dc54a08cSstephen hemminger if (unlikely(data_buflen < rndis_pkt->data_len)) { 3753d541ac5SVitaly Kuznetsov netdev_err(dev->ndev, "rndis message buffer " 3764b8a8bc9SWei Yongjun "overflow detected (got %u, min %u)" 3774b8a8bc9SWei Yongjun "...dropping this message!\n", 378dc54a08cSstephen hemminger data_buflen, rndis_pkt->data_len); 37910082f98SKY Srinivasan return NVSP_STAT_FAIL; 3804b8a8bc9SWei Yongjun } 3814b8a8bc9SWei Yongjun 382dc54a08cSstephen hemminger vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); 383dc54a08cSstephen hemminger 3844b8a8bc9SWei Yongjun /* 3854b8a8bc9SWei Yongjun * Remove the rndis trailer padding from rndis packet message 3864b8a8bc9SWei Yongjun * rndis_pkt->data_len tell us the real data length, we only copy 3874b8a8bc9SWei Yongjun * the data packet to the stack, without the rndis trailer padding 3884b8a8bc9SWei Yongjun */ 389dc54a08cSstephen hemminger data = (void *)((unsigned long)data + data_offset); 390e3d605edSKY Srinivasan csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); 391345ac089SStephen Hemminger 392345ac089SStephen Hemminger return netvsc_recv_callback(ndev, nvdev, channel, 393dc54a08cSstephen hemminger data, rndis_pkt->data_len, 394dc54a08cSstephen hemminger csum_info, vlan); 39595fa0405SHaiyang Zhang } 39695fa0405SHaiyang Zhang 397dc54a08cSstephen hemminger int rndis_filter_receive(struct net_device *ndev, 398dc54a08cSstephen hemminger struct netvsc_device *net_dev, 399dc54a08cSstephen hemminger struct vmbus_channel *channel, 400dc54a08cSstephen hemminger void *data, u32 buflen) 40195fa0405SHaiyang Zhang { 4023d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(ndev); 403dc54a08cSstephen hemminger struct rndis_device *rndis_dev = net_dev->extension; 404dc54a08cSstephen hemminger struct rndis_message *rndis_msg = data; 40595fa0405SHaiyang Zhang 40695fa0405SHaiyang Zhang /* Make sure the rndis device state is initialized */ 407dc54a08cSstephen hemminger if (unlikely(!rndis_dev)) { 408b5eb819dSVitaly Kuznetsov netif_dbg(net_device_ctx, rx_err, ndev, 409dc54a08cSstephen hemminger "got rndis message but no rndis device!\n"); 410dc54a08cSstephen hemminger return NVSP_STAT_FAIL; 41195fa0405SHaiyang Zhang } 41295fa0405SHaiyang Zhang 413dc54a08cSstephen hemminger if (unlikely(rndis_dev->state == RNDIS_DEV_UNINITIALIZED)) { 414b5eb819dSVitaly Kuznetsov netif_dbg(net_device_ctx, rx_err, ndev, 415dc54a08cSstephen hemminger "got rndis message uninitialized\n"); 416dc54a08cSstephen hemminger return NVSP_STAT_FAIL; 41795fa0405SHaiyang Zhang } 41895fa0405SHaiyang Zhang 419dc54a08cSstephen hemminger if (netif_msg_rx_status(net_device_ctx)) 42079cf1baeSStephen Hemminger dump_rndis_message(ndev, rndis_msg); 42195fa0405SHaiyang Zhang 422ef31bef6SHaiyang Zhang switch (rndis_msg->ndis_msg_type) { 42351491167SLinus Walleij case RNDIS_MSG_PACKET: 424345ac089SStephen Hemminger return rndis_filter_receive_data(ndev, net_dev, 425345ac089SStephen Hemminger rndis_dev, rndis_msg, 426dc54a08cSstephen hemminger channel, data, buflen); 42751491167SLinus Walleij case RNDIS_MSG_INIT_C: 42851491167SLinus Walleij case RNDIS_MSG_QUERY_C: 42951491167SLinus Walleij case RNDIS_MSG_SET_C: 43095fa0405SHaiyang Zhang /* completion msgs */ 431ef31bef6SHaiyang Zhang rndis_filter_receive_response(rndis_dev, rndis_msg); 43295fa0405SHaiyang Zhang break; 43395fa0405SHaiyang Zhang 43451491167SLinus Walleij case RNDIS_MSG_INDICATE: 43595fa0405SHaiyang Zhang /* notification msgs */ 43679cf1baeSStephen Hemminger netvsc_linkstatus_callback(ndev, rndis_msg); 43795fa0405SHaiyang Zhang break; 43895fa0405SHaiyang Zhang default: 43995fa0405SHaiyang Zhang netdev_err(ndev, 44095fa0405SHaiyang Zhang "unhandled rndis message (type %u len %u)\n", 441ef31bef6SHaiyang Zhang rndis_msg->ndis_msg_type, 442ef31bef6SHaiyang Zhang rndis_msg->msg_len); 44395fa0405SHaiyang Zhang break; 44495fa0405SHaiyang Zhang } 44595fa0405SHaiyang Zhang 446dc54a08cSstephen hemminger return 0; 44795fa0405SHaiyang Zhang } 44895fa0405SHaiyang Zhang 449867047c4Sstephen hemminger static int rndis_filter_query_device(struct rndis_device *dev, 450867047c4Sstephen hemminger struct netvsc_device *nvdev, 451867047c4Sstephen hemminger u32 oid, void *result, u32 *result_size) 45295fa0405SHaiyang Zhang { 45395fa0405SHaiyang Zhang struct rndis_request *request; 45495fa0405SHaiyang Zhang u32 inresult_size = *result_size; 45595fa0405SHaiyang Zhang struct rndis_query_request *query; 45695fa0405SHaiyang Zhang struct rndis_query_complete *query_complete; 45795fa0405SHaiyang Zhang int ret = 0; 45895fa0405SHaiyang Zhang 45995fa0405SHaiyang Zhang if (!result) 46095fa0405SHaiyang Zhang return -EINVAL; 46195fa0405SHaiyang Zhang 46295fa0405SHaiyang Zhang *result_size = 0; 46351491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_QUERY, 46495fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_query_request)); 46595fa0405SHaiyang Zhang if (!request) { 46695fa0405SHaiyang Zhang ret = -ENOMEM; 46795fa0405SHaiyang Zhang goto cleanup; 46895fa0405SHaiyang Zhang } 46995fa0405SHaiyang Zhang 47095fa0405SHaiyang Zhang /* Setup the rndis query */ 47195fa0405SHaiyang Zhang query = &request->request_msg.msg.query_req; 47295fa0405SHaiyang Zhang query->oid = oid; 47395fa0405SHaiyang Zhang query->info_buf_offset = sizeof(struct rndis_query_request); 47495fa0405SHaiyang Zhang query->info_buflen = 0; 47595fa0405SHaiyang Zhang query->dev_vc_handle = 0; 47695fa0405SHaiyang Zhang 47723312a3bSstephen hemminger if (oid == OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES) { 47823312a3bSstephen hemminger struct ndis_offload *hwcaps; 47923312a3bSstephen hemminger u32 nvsp_version = nvdev->nvsp_version; 48023312a3bSstephen hemminger u8 ndis_rev; 48123312a3bSstephen hemminger size_t size; 48223312a3bSstephen hemminger 48323312a3bSstephen hemminger if (nvsp_version >= NVSP_PROTOCOL_VERSION_5) { 48423312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_3; 48523312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE; 48623312a3bSstephen hemminger } else if (nvsp_version >= NVSP_PROTOCOL_VERSION_4) { 48723312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_2; 48823312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE_6_1; 48923312a3bSstephen hemminger } else { 49023312a3bSstephen hemminger ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_1; 49123312a3bSstephen hemminger size = NDIS_OFFLOAD_SIZE_6_0; 49223312a3bSstephen hemminger } 49323312a3bSstephen hemminger 49423312a3bSstephen hemminger request->request_msg.msg_len += size; 49523312a3bSstephen hemminger query->info_buflen = size; 49623312a3bSstephen hemminger hwcaps = (struct ndis_offload *) 49723312a3bSstephen hemminger ((unsigned long)query + query->info_buf_offset); 49823312a3bSstephen hemminger 49923312a3bSstephen hemminger hwcaps->header.type = NDIS_OBJECT_TYPE_OFFLOAD; 50023312a3bSstephen hemminger hwcaps->header.revision = ndis_rev; 50123312a3bSstephen hemminger hwcaps->header.size = size; 50223312a3bSstephen hemminger 50323312a3bSstephen hemminger } else if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { 5045b54dac8SHaiyang Zhang struct ndis_recv_scale_cap *cap; 5055b54dac8SHaiyang Zhang 5065b54dac8SHaiyang Zhang request->request_msg.msg_len += 5075b54dac8SHaiyang Zhang sizeof(struct ndis_recv_scale_cap); 5085b54dac8SHaiyang Zhang query->info_buflen = sizeof(struct ndis_recv_scale_cap); 5095b54dac8SHaiyang Zhang cap = (struct ndis_recv_scale_cap *)((unsigned long)query + 5105b54dac8SHaiyang Zhang query->info_buf_offset); 5115b54dac8SHaiyang Zhang cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; 5125b54dac8SHaiyang Zhang cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; 5135b54dac8SHaiyang Zhang cap->hdr.size = sizeof(struct ndis_recv_scale_cap); 5145b54dac8SHaiyang Zhang } 5155b54dac8SHaiyang Zhang 51695fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 51795fa0405SHaiyang Zhang if (ret != 0) 51895fa0405SHaiyang Zhang goto cleanup; 51995fa0405SHaiyang Zhang 5205362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 52195fa0405SHaiyang Zhang 52295fa0405SHaiyang Zhang /* Copy the response back */ 52395fa0405SHaiyang Zhang query_complete = &request->response_msg.msg.query_complete; 52495fa0405SHaiyang Zhang 52595fa0405SHaiyang Zhang if (query_complete->info_buflen > inresult_size) { 52695fa0405SHaiyang Zhang ret = -1; 52795fa0405SHaiyang Zhang goto cleanup; 52895fa0405SHaiyang Zhang } 52995fa0405SHaiyang Zhang 53095fa0405SHaiyang Zhang memcpy(result, 53195fa0405SHaiyang Zhang (void *)((unsigned long)query_complete + 53295fa0405SHaiyang Zhang query_complete->info_buf_offset), 53395fa0405SHaiyang Zhang query_complete->info_buflen); 53495fa0405SHaiyang Zhang 53595fa0405SHaiyang Zhang *result_size = query_complete->info_buflen; 53695fa0405SHaiyang Zhang 53795fa0405SHaiyang Zhang cleanup: 53895fa0405SHaiyang Zhang if (request) 53995fa0405SHaiyang Zhang put_rndis_request(dev, request); 54095fa0405SHaiyang Zhang 54195fa0405SHaiyang Zhang return ret; 54295fa0405SHaiyang Zhang } 54395fa0405SHaiyang Zhang 54423312a3bSstephen hemminger /* Get the hardware offload capabilities */ 54523312a3bSstephen hemminger static int 546867047c4Sstephen hemminger rndis_query_hwcaps(struct rndis_device *dev, struct netvsc_device *net_device, 547867047c4Sstephen hemminger struct ndis_offload *caps) 54823312a3bSstephen hemminger { 54923312a3bSstephen hemminger u32 caps_len = sizeof(*caps); 55023312a3bSstephen hemminger int ret; 55123312a3bSstephen hemminger 55223312a3bSstephen hemminger memset(caps, 0, sizeof(*caps)); 55323312a3bSstephen hemminger 554867047c4Sstephen hemminger ret = rndis_filter_query_device(dev, net_device, 55523312a3bSstephen hemminger OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES, 55623312a3bSstephen hemminger caps, &caps_len); 55723312a3bSstephen hemminger if (ret) 55823312a3bSstephen hemminger return ret; 55923312a3bSstephen hemminger 56023312a3bSstephen hemminger if (caps->header.type != NDIS_OBJECT_TYPE_OFFLOAD) { 56123312a3bSstephen hemminger netdev_warn(dev->ndev, "invalid NDIS objtype %#x\n", 56223312a3bSstephen hemminger caps->header.type); 56323312a3bSstephen hemminger return -EINVAL; 56423312a3bSstephen hemminger } 56523312a3bSstephen hemminger 56623312a3bSstephen hemminger if (caps->header.revision < NDIS_OFFLOAD_PARAMETERS_REVISION_1) { 56723312a3bSstephen hemminger netdev_warn(dev->ndev, "invalid NDIS objrev %x\n", 56823312a3bSstephen hemminger caps->header.revision); 56923312a3bSstephen hemminger return -EINVAL; 57023312a3bSstephen hemminger } 57123312a3bSstephen hemminger 57223312a3bSstephen hemminger if (caps->header.size > caps_len || 57323312a3bSstephen hemminger caps->header.size < NDIS_OFFLOAD_SIZE_6_0) { 57423312a3bSstephen hemminger netdev_warn(dev->ndev, 57523312a3bSstephen hemminger "invalid NDIS objsize %u, data size %u\n", 57623312a3bSstephen hemminger caps->header.size, caps_len); 57723312a3bSstephen hemminger return -EINVAL; 57823312a3bSstephen hemminger } 57923312a3bSstephen hemminger 58023312a3bSstephen hemminger return 0; 58123312a3bSstephen hemminger } 58223312a3bSstephen hemminger 583867047c4Sstephen hemminger static int rndis_filter_query_device_mac(struct rndis_device *dev, 584867047c4Sstephen hemminger struct netvsc_device *net_device) 58595fa0405SHaiyang Zhang { 58695fa0405SHaiyang Zhang u32 size = ETH_ALEN; 58795fa0405SHaiyang Zhang 588867047c4Sstephen hemminger return rndis_filter_query_device(dev, net_device, 58995fa0405SHaiyang Zhang RNDIS_OID_802_3_PERMANENT_ADDRESS, 59095fa0405SHaiyang Zhang dev->hw_mac_adr, &size); 59195fa0405SHaiyang Zhang } 59295fa0405SHaiyang Zhang 5931ce09e89SHaiyang Zhang #define NWADR_STR "NetworkAddress" 5941ce09e89SHaiyang Zhang #define NWADR_STRLEN 14 5951ce09e89SHaiyang Zhang 596867047c4Sstephen hemminger int rndis_filter_set_device_mac(struct netvsc_device *nvdev, 597867047c4Sstephen hemminger const char *mac) 5981ce09e89SHaiyang Zhang { 5991ce09e89SHaiyang Zhang struct rndis_device *rdev = nvdev->extension; 6001ce09e89SHaiyang Zhang struct rndis_request *request; 6011ce09e89SHaiyang Zhang struct rndis_set_request *set; 6021ce09e89SHaiyang Zhang struct rndis_config_parameter_info *cpi; 6031ce09e89SHaiyang Zhang wchar_t *cfg_nwadr, *cfg_mac; 6041ce09e89SHaiyang Zhang struct rndis_set_complete *set_complete; 6051ce09e89SHaiyang Zhang char macstr[2*ETH_ALEN+1]; 6061ce09e89SHaiyang Zhang u32 extlen = sizeof(struct rndis_config_parameter_info) + 6071ce09e89SHaiyang Zhang 2*NWADR_STRLEN + 4*ETH_ALEN; 608999028ccSNicholas Mc Guire int ret; 6091ce09e89SHaiyang Zhang 6101ce09e89SHaiyang Zhang request = get_rndis_request(rdev, RNDIS_MSG_SET, 6111ce09e89SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 6121ce09e89SHaiyang Zhang if (!request) 6131ce09e89SHaiyang Zhang return -ENOMEM; 6141ce09e89SHaiyang Zhang 6151ce09e89SHaiyang Zhang set = &request->request_msg.msg.set_req; 6161ce09e89SHaiyang Zhang set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; 6171ce09e89SHaiyang Zhang set->info_buflen = extlen; 6181ce09e89SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 6191ce09e89SHaiyang Zhang set->dev_vc_handle = 0; 6201ce09e89SHaiyang Zhang 6211ce09e89SHaiyang Zhang cpi = (struct rndis_config_parameter_info *)((ulong)set + 6221ce09e89SHaiyang Zhang set->info_buf_offset); 6231ce09e89SHaiyang Zhang cpi->parameter_name_offset = 6241ce09e89SHaiyang Zhang sizeof(struct rndis_config_parameter_info); 6251ce09e89SHaiyang Zhang /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ 6261ce09e89SHaiyang Zhang cpi->parameter_name_length = 2*NWADR_STRLEN; 6271ce09e89SHaiyang Zhang cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; 6281ce09e89SHaiyang Zhang cpi->parameter_value_offset = 6291ce09e89SHaiyang Zhang cpi->parameter_name_offset + cpi->parameter_name_length; 6301ce09e89SHaiyang Zhang /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ 6311ce09e89SHaiyang Zhang cpi->parameter_value_length = 4*ETH_ALEN; 6321ce09e89SHaiyang Zhang 6331ce09e89SHaiyang Zhang cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); 6341ce09e89SHaiyang Zhang cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); 6351ce09e89SHaiyang Zhang ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, 6361ce09e89SHaiyang Zhang cfg_nwadr, NWADR_STRLEN); 6371ce09e89SHaiyang Zhang if (ret < 0) 6381ce09e89SHaiyang Zhang goto cleanup; 6391ce09e89SHaiyang Zhang snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); 6401ce09e89SHaiyang Zhang ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, 6411ce09e89SHaiyang Zhang cfg_mac, 2*ETH_ALEN); 6421ce09e89SHaiyang Zhang if (ret < 0) 6431ce09e89SHaiyang Zhang goto cleanup; 6441ce09e89SHaiyang Zhang 6451ce09e89SHaiyang Zhang ret = rndis_filter_send_request(rdev, request); 6461ce09e89SHaiyang Zhang if (ret != 0) 6471ce09e89SHaiyang Zhang goto cleanup; 6481ce09e89SHaiyang Zhang 6495362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 6505362855aSVitaly Kuznetsov 6511ce09e89SHaiyang Zhang set_complete = &request->response_msg.msg.set_complete; 652867047c4Sstephen hemminger if (set_complete->status != RNDIS_STATUS_SUCCESS) 653867047c4Sstephen hemminger ret = -EIO; 6541ce09e89SHaiyang Zhang 6551ce09e89SHaiyang Zhang cleanup: 6561ce09e89SHaiyang Zhang put_rndis_request(rdev, request); 6571ce09e89SHaiyang Zhang return ret; 6581ce09e89SHaiyang Zhang } 6591ce09e89SHaiyang Zhang 660da19fcd0SLad, Prabhakar static int 661426d9541SVitaly Kuznetsov rndis_filter_set_offload_params(struct net_device *ndev, 6629749fed5Sstephen hemminger struct netvsc_device *nvdev, 6634a0e70aeSKY Srinivasan struct ndis_offload_params *req_offloads) 6644a0e70aeSKY Srinivasan { 6654a0e70aeSKY Srinivasan struct rndis_device *rdev = nvdev->extension; 6664a0e70aeSKY Srinivasan struct rndis_request *request; 6674a0e70aeSKY Srinivasan struct rndis_set_request *set; 6684a0e70aeSKY Srinivasan struct ndis_offload_params *offload_params; 6694a0e70aeSKY Srinivasan struct rndis_set_complete *set_complete; 6704a0e70aeSKY Srinivasan u32 extlen = sizeof(struct ndis_offload_params); 671999028ccSNicholas Mc Guire int ret; 672af9893a3SKY Srinivasan u32 vsp_version = nvdev->nvsp_version; 673af9893a3SKY Srinivasan 674af9893a3SKY Srinivasan if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { 675af9893a3SKY Srinivasan extlen = VERSION_4_OFFLOAD_SIZE; 676af9893a3SKY Srinivasan /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support 677af9893a3SKY Srinivasan * UDP checksum offload. 678af9893a3SKY Srinivasan */ 679af9893a3SKY Srinivasan req_offloads->udp_ip_v4_csum = 0; 680af9893a3SKY Srinivasan req_offloads->udp_ip_v6_csum = 0; 681af9893a3SKY Srinivasan } 6824a0e70aeSKY Srinivasan 6834a0e70aeSKY Srinivasan request = get_rndis_request(rdev, RNDIS_MSG_SET, 6844a0e70aeSKY Srinivasan RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 6854a0e70aeSKY Srinivasan if (!request) 6864a0e70aeSKY Srinivasan return -ENOMEM; 6874a0e70aeSKY Srinivasan 6884a0e70aeSKY Srinivasan set = &request->request_msg.msg.set_req; 6894a0e70aeSKY Srinivasan set->oid = OID_TCP_OFFLOAD_PARAMETERS; 6904a0e70aeSKY Srinivasan set->info_buflen = extlen; 6914a0e70aeSKY Srinivasan set->info_buf_offset = sizeof(struct rndis_set_request); 6924a0e70aeSKY Srinivasan set->dev_vc_handle = 0; 6934a0e70aeSKY Srinivasan 6944a0e70aeSKY Srinivasan offload_params = (struct ndis_offload_params *)((ulong)set + 6954a0e70aeSKY Srinivasan set->info_buf_offset); 6964a0e70aeSKY Srinivasan *offload_params = *req_offloads; 6974a0e70aeSKY Srinivasan offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; 6984a0e70aeSKY Srinivasan offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; 6994a0e70aeSKY Srinivasan offload_params->header.size = extlen; 7004a0e70aeSKY Srinivasan 7014a0e70aeSKY Srinivasan ret = rndis_filter_send_request(rdev, request); 7024a0e70aeSKY Srinivasan if (ret != 0) 7034a0e70aeSKY Srinivasan goto cleanup; 7044a0e70aeSKY Srinivasan 7055362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 7064a0e70aeSKY Srinivasan set_complete = &request->response_msg.msg.set_complete; 7074a0e70aeSKY Srinivasan if (set_complete->status != RNDIS_STATUS_SUCCESS) { 708af9893a3SKY Srinivasan netdev_err(ndev, "Fail to set offload on host side:0x%x\n", 7094a0e70aeSKY Srinivasan set_complete->status); 7104a0e70aeSKY Srinivasan ret = -EINVAL; 7114a0e70aeSKY Srinivasan } 7124a0e70aeSKY Srinivasan 7134a0e70aeSKY Srinivasan cleanup: 7144a0e70aeSKY Srinivasan put_rndis_request(rdev, request); 7154a0e70aeSKY Srinivasan return ret; 7164a0e70aeSKY Srinivasan } 7171ce09e89SHaiyang Zhang 718962f3feeSstephen hemminger int rndis_filter_set_rss_param(struct rndis_device *rdev, 719715e2ec5SHaiyang Zhang const u8 *rss_key) 7205b54dac8SHaiyang Zhang { 7213d541ac5SVitaly Kuznetsov struct net_device *ndev = rdev->ndev; 7225b54dac8SHaiyang Zhang struct rndis_request *request; 7235b54dac8SHaiyang Zhang struct rndis_set_request *set; 7245b54dac8SHaiyang Zhang struct rndis_set_complete *set_complete; 7255b54dac8SHaiyang Zhang u32 extlen = sizeof(struct ndis_recv_scale_param) + 726962f3feeSstephen hemminger 4 * ITAB_NUM + NETVSC_HASH_KEYLEN; 7275b54dac8SHaiyang Zhang struct ndis_recv_scale_param *rssp; 7285b54dac8SHaiyang Zhang u32 *itab; 7295b54dac8SHaiyang Zhang u8 *keyp; 730999028ccSNicholas Mc Guire int i, ret; 7315b54dac8SHaiyang Zhang 7325b54dac8SHaiyang Zhang request = get_rndis_request( 7335b54dac8SHaiyang Zhang rdev, RNDIS_MSG_SET, 7345b54dac8SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); 7355b54dac8SHaiyang Zhang if (!request) 7365b54dac8SHaiyang Zhang return -ENOMEM; 7375b54dac8SHaiyang Zhang 7385b54dac8SHaiyang Zhang set = &request->request_msg.msg.set_req; 7395b54dac8SHaiyang Zhang set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; 7405b54dac8SHaiyang Zhang set->info_buflen = extlen; 7415b54dac8SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 7425b54dac8SHaiyang Zhang set->dev_vc_handle = 0; 7435b54dac8SHaiyang Zhang 7445b54dac8SHaiyang Zhang rssp = (struct ndis_recv_scale_param *)(set + 1); 7455b54dac8SHaiyang Zhang rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; 7465b54dac8SHaiyang Zhang rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; 7475b54dac8SHaiyang Zhang rssp->hdr.size = sizeof(struct ndis_recv_scale_param); 7485b54dac8SHaiyang Zhang rssp->flag = 0; 7495b54dac8SHaiyang Zhang rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | 7504c87454aSHaiyang Zhang NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | 7514c87454aSHaiyang Zhang NDIS_HASH_TCP_IPV6; 7525b54dac8SHaiyang Zhang rssp->indirect_tabsize = 4*ITAB_NUM; 7535b54dac8SHaiyang Zhang rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); 754962f3feeSstephen hemminger rssp->hashkey_size = NETVSC_HASH_KEYLEN; 7555b54dac8SHaiyang Zhang rssp->kashkey_offset = rssp->indirect_taboffset + 7565b54dac8SHaiyang Zhang rssp->indirect_tabsize; 7575b54dac8SHaiyang Zhang 7585b54dac8SHaiyang Zhang /* Set indirection table entries */ 7595b54dac8SHaiyang Zhang itab = (u32 *)(rssp + 1); 7605b54dac8SHaiyang Zhang for (i = 0; i < ITAB_NUM; i++) 76147371300SHaiyang Zhang itab[i] = rdev->rx_table[i]; 7625b54dac8SHaiyang Zhang 7635b54dac8SHaiyang Zhang /* Set hask key values */ 7645b54dac8SHaiyang Zhang keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); 765962f3feeSstephen hemminger memcpy(keyp, rss_key, NETVSC_HASH_KEYLEN); 7665b54dac8SHaiyang Zhang 7675b54dac8SHaiyang Zhang ret = rndis_filter_send_request(rdev, request); 7685b54dac8SHaiyang Zhang if (ret != 0) 7695b54dac8SHaiyang Zhang goto cleanup; 7705b54dac8SHaiyang Zhang 7715362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 7725b54dac8SHaiyang Zhang set_complete = &request->response_msg.msg.set_complete; 773962f3feeSstephen hemminger if (set_complete->status == RNDIS_STATUS_SUCCESS) 774962f3feeSstephen hemminger memcpy(rdev->rss_key, rss_key, NETVSC_HASH_KEYLEN); 775962f3feeSstephen hemminger else { 7765b54dac8SHaiyang Zhang netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", 7775b54dac8SHaiyang Zhang set_complete->status); 7785b54dac8SHaiyang Zhang ret = -EINVAL; 7795b54dac8SHaiyang Zhang } 7805b54dac8SHaiyang Zhang 7815b54dac8SHaiyang Zhang cleanup: 7825b54dac8SHaiyang Zhang put_rndis_request(rdev, request); 7835b54dac8SHaiyang Zhang return ret; 7845b54dac8SHaiyang Zhang } 7855b54dac8SHaiyang Zhang 786867047c4Sstephen hemminger static int rndis_filter_query_device_link_status(struct rndis_device *dev, 787867047c4Sstephen hemminger struct netvsc_device *net_device) 78895fa0405SHaiyang Zhang { 78995fa0405SHaiyang Zhang u32 size = sizeof(u32); 79095fa0405SHaiyang Zhang u32 link_status; 79195fa0405SHaiyang Zhang 792867047c4Sstephen hemminger return rndis_filter_query_device(dev, net_device, 79395fa0405SHaiyang Zhang RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, 79495fa0405SHaiyang Zhang &link_status, &size); 79595fa0405SHaiyang Zhang } 79695fa0405SHaiyang Zhang 797867047c4Sstephen hemminger static int rndis_filter_query_link_speed(struct rndis_device *dev, 798867047c4Sstephen hemminger struct netvsc_device *net_device) 799b37879e6SHaiyang Zhang { 800b37879e6SHaiyang Zhang u32 size = sizeof(u32); 801b37879e6SHaiyang Zhang u32 link_speed; 802b37879e6SHaiyang Zhang struct net_device_context *ndc; 803b37879e6SHaiyang Zhang int ret; 804b37879e6SHaiyang Zhang 805867047c4Sstephen hemminger ret = rndis_filter_query_device(dev, net_device, 806867047c4Sstephen hemminger RNDIS_OID_GEN_LINK_SPEED, 807b37879e6SHaiyang Zhang &link_speed, &size); 808b37879e6SHaiyang Zhang 809b37879e6SHaiyang Zhang if (!ret) { 810b37879e6SHaiyang Zhang ndc = netdev_priv(dev->ndev); 811b37879e6SHaiyang Zhang 812b37879e6SHaiyang Zhang /* The link speed reported from host is in 100bps unit, so 813b37879e6SHaiyang Zhang * we convert it to Mbps here. 814b37879e6SHaiyang Zhang */ 815b37879e6SHaiyang Zhang ndc->speed = link_speed / 10000; 816b37879e6SHaiyang Zhang } 817b37879e6SHaiyang Zhang 818b37879e6SHaiyang Zhang return ret; 819b37879e6SHaiyang Zhang } 820b37879e6SHaiyang Zhang 8214f19c0d8Sstephen hemminger static int rndis_filter_set_packet_filter(struct rndis_device *dev, 8224f19c0d8Sstephen hemminger u32 new_filter) 82395fa0405SHaiyang Zhang { 82495fa0405SHaiyang Zhang struct rndis_request *request; 82595fa0405SHaiyang Zhang struct rndis_set_request *set; 826999028ccSNicholas Mc Guire int ret; 82795fa0405SHaiyang Zhang 82851491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_SET, 82995fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_set_request) + 83095fa0405SHaiyang Zhang sizeof(u32)); 831ce12b810Sstephen hemminger if (!request) 832ce12b810Sstephen hemminger return -ENOMEM; 833ce12b810Sstephen hemminger 83495fa0405SHaiyang Zhang 83595fa0405SHaiyang Zhang /* Setup the rndis set */ 83695fa0405SHaiyang Zhang set = &request->request_msg.msg.set_req; 83795fa0405SHaiyang Zhang set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; 83895fa0405SHaiyang Zhang set->info_buflen = sizeof(u32); 83995fa0405SHaiyang Zhang set->info_buf_offset = sizeof(struct rndis_set_request); 84095fa0405SHaiyang Zhang 84195fa0405SHaiyang Zhang memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), 84295fa0405SHaiyang Zhang &new_filter, sizeof(u32)); 84395fa0405SHaiyang Zhang 84495fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 845ce12b810Sstephen hemminger if (ret == 0) 8465362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 84795fa0405SHaiyang Zhang 84895fa0405SHaiyang Zhang put_rndis_request(dev, request); 849ce12b810Sstephen hemminger 85095fa0405SHaiyang Zhang return ret; 85195fa0405SHaiyang Zhang } 85295fa0405SHaiyang Zhang 8534f19c0d8Sstephen hemminger static void rndis_set_multicast(struct work_struct *w) 8544f19c0d8Sstephen hemminger { 8554f19c0d8Sstephen hemminger struct rndis_device *rdev 8564f19c0d8Sstephen hemminger = container_of(w, struct rndis_device, mcast_work); 8574f19c0d8Sstephen hemminger 8584f19c0d8Sstephen hemminger if (rdev->ndev->flags & IFF_PROMISC) 8594f19c0d8Sstephen hemminger rndis_filter_set_packet_filter(rdev, 8604f19c0d8Sstephen hemminger NDIS_PACKET_TYPE_PROMISCUOUS); 8614f19c0d8Sstephen hemminger else 8624f19c0d8Sstephen hemminger rndis_filter_set_packet_filter(rdev, 8634f19c0d8Sstephen hemminger NDIS_PACKET_TYPE_BROADCAST | 8644f19c0d8Sstephen hemminger NDIS_PACKET_TYPE_ALL_MULTICAST | 8654f19c0d8Sstephen hemminger NDIS_PACKET_TYPE_DIRECTED); 8664f19c0d8Sstephen hemminger } 8674f19c0d8Sstephen hemminger 8684f19c0d8Sstephen hemminger void rndis_filter_update(struct netvsc_device *nvdev) 8694f19c0d8Sstephen hemminger { 8704f19c0d8Sstephen hemminger struct rndis_device *rdev = nvdev->extension; 8714f19c0d8Sstephen hemminger 8724f19c0d8Sstephen hemminger schedule_work(&rdev->mcast_work); 8734f19c0d8Sstephen hemminger } 8744f19c0d8Sstephen hemminger 875867047c4Sstephen hemminger static int rndis_filter_init_device(struct rndis_device *dev, 876867047c4Sstephen hemminger struct netvsc_device *nvdev) 87795fa0405SHaiyang Zhang { 87895fa0405SHaiyang Zhang struct rndis_request *request; 87995fa0405SHaiyang Zhang struct rndis_initialize_request *init; 88095fa0405SHaiyang Zhang struct rndis_initialize_complete *init_complete; 88195fa0405SHaiyang Zhang u32 status; 882999028ccSNicholas Mc Guire int ret; 88395fa0405SHaiyang Zhang 88451491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_INIT, 88595fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); 88695fa0405SHaiyang Zhang if (!request) { 88795fa0405SHaiyang Zhang ret = -ENOMEM; 88895fa0405SHaiyang Zhang goto cleanup; 88995fa0405SHaiyang Zhang } 89095fa0405SHaiyang Zhang 89195fa0405SHaiyang Zhang /* Setup the rndis set */ 89295fa0405SHaiyang Zhang init = &request->request_msg.msg.init_req; 89395fa0405SHaiyang Zhang init->major_ver = RNDIS_MAJOR_VERSION; 89495fa0405SHaiyang Zhang init->minor_ver = RNDIS_MINOR_VERSION; 895fb1d074eSHaiyang Zhang init->max_xfer_size = 0x4000; 89695fa0405SHaiyang Zhang 89795fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZING; 89895fa0405SHaiyang Zhang 89995fa0405SHaiyang Zhang ret = rndis_filter_send_request(dev, request); 90095fa0405SHaiyang Zhang if (ret != 0) { 90195fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 90295fa0405SHaiyang Zhang goto cleanup; 90395fa0405SHaiyang Zhang } 90495fa0405SHaiyang Zhang 9055362855aSVitaly Kuznetsov wait_for_completion(&request->wait_event); 90695fa0405SHaiyang Zhang 90795fa0405SHaiyang Zhang init_complete = &request->response_msg.msg.init_complete; 90895fa0405SHaiyang Zhang status = init_complete->status; 90995fa0405SHaiyang Zhang if (status == RNDIS_STATUS_SUCCESS) { 91095fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZED; 9117c3877f2SHaiyang Zhang nvdev->max_pkt = init_complete->max_pkt_per_msg; 9127c3877f2SHaiyang Zhang nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; 91395fa0405SHaiyang Zhang ret = 0; 91495fa0405SHaiyang Zhang } else { 91595fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 91695fa0405SHaiyang Zhang ret = -EINVAL; 91795fa0405SHaiyang Zhang } 91895fa0405SHaiyang Zhang 91995fa0405SHaiyang Zhang cleanup: 92095fa0405SHaiyang Zhang if (request) 92195fa0405SHaiyang Zhang put_rndis_request(dev, request); 92295fa0405SHaiyang Zhang 92395fa0405SHaiyang Zhang return ret; 92495fa0405SHaiyang Zhang } 92595fa0405SHaiyang Zhang 92646b4f7f5Sstephen hemminger static bool netvsc_device_idle(const struct netvsc_device *nvdev) 92746b4f7f5Sstephen hemminger { 92846b4f7f5Sstephen hemminger int i; 92946b4f7f5Sstephen hemminger 93046b4f7f5Sstephen hemminger for (i = 0; i < nvdev->num_chn; i++) { 93146b4f7f5Sstephen hemminger const struct netvsc_channel *nvchan = &nvdev->chan_table[i]; 93246b4f7f5Sstephen hemminger 9337426b1a5Sstephen hemminger if (nvchan->mrc.first != nvchan->mrc.next) 9347426b1a5Sstephen hemminger return false; 9357426b1a5Sstephen hemminger 93646b4f7f5Sstephen hemminger if (atomic_read(&nvchan->queue_sends) > 0) 93746b4f7f5Sstephen hemminger return false; 93846b4f7f5Sstephen hemminger } 93946b4f7f5Sstephen hemminger 94046b4f7f5Sstephen hemminger return true; 94146b4f7f5Sstephen hemminger } 94246b4f7f5Sstephen hemminger 94395fa0405SHaiyang Zhang static void rndis_filter_halt_device(struct rndis_device *dev) 94495fa0405SHaiyang Zhang { 94595fa0405SHaiyang Zhang struct rndis_request *request; 94695fa0405SHaiyang Zhang struct rndis_halt_request *halt; 9473d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); 9483962981fSstephen hemminger struct netvsc_device *nvdev = rtnl_dereference(net_device_ctx->nvdev); 94995fa0405SHaiyang Zhang 95095fa0405SHaiyang Zhang /* Attempt to do a rndis device halt */ 95151491167SLinus Walleij request = get_rndis_request(dev, RNDIS_MSG_HALT, 95295fa0405SHaiyang Zhang RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); 95395fa0405SHaiyang Zhang if (!request) 95495fa0405SHaiyang Zhang goto cleanup; 95595fa0405SHaiyang Zhang 95695fa0405SHaiyang Zhang /* Setup the rndis set */ 95795fa0405SHaiyang Zhang halt = &request->request_msg.msg.halt_req; 95895fa0405SHaiyang Zhang halt->req_id = atomic_inc_return(&dev->new_req_id); 95995fa0405SHaiyang Zhang 96095fa0405SHaiyang Zhang /* Ignore return since this msg is optional. */ 96195fa0405SHaiyang Zhang rndis_filter_send_request(dev, request); 96295fa0405SHaiyang Zhang 96395fa0405SHaiyang Zhang dev->state = RNDIS_DEV_UNINITIALIZED; 96495fa0405SHaiyang Zhang 96595fa0405SHaiyang Zhang cleanup: 966ae9e63bbSHaiyang Zhang nvdev->destroy = true; 96700ecfb3bSstephen hemminger 96800ecfb3bSstephen hemminger /* Force flag to be ordered before waiting */ 96900ecfb3bSstephen hemminger wmb(); 970ae9e63bbSHaiyang Zhang 971ae9e63bbSHaiyang Zhang /* Wait for all send completions */ 97246b4f7f5Sstephen hemminger wait_event(nvdev->wait_drain, netvsc_device_idle(nvdev)); 973ae9e63bbSHaiyang Zhang 97495fa0405SHaiyang Zhang if (request) 97595fa0405SHaiyang Zhang put_rndis_request(dev, request); 97695fa0405SHaiyang Zhang } 97795fa0405SHaiyang Zhang 97895fa0405SHaiyang Zhang static int rndis_filter_open_device(struct rndis_device *dev) 97995fa0405SHaiyang Zhang { 98095fa0405SHaiyang Zhang int ret; 98195fa0405SHaiyang Zhang 98295fa0405SHaiyang Zhang if (dev->state != RNDIS_DEV_INITIALIZED) 98395fa0405SHaiyang Zhang return 0; 98495fa0405SHaiyang Zhang 98595fa0405SHaiyang Zhang ret = rndis_filter_set_packet_filter(dev, 98695fa0405SHaiyang Zhang NDIS_PACKET_TYPE_BROADCAST | 98795fa0405SHaiyang Zhang NDIS_PACKET_TYPE_ALL_MULTICAST | 98895fa0405SHaiyang Zhang NDIS_PACKET_TYPE_DIRECTED); 98995fa0405SHaiyang Zhang if (ret == 0) 99095fa0405SHaiyang Zhang dev->state = RNDIS_DEV_DATAINITIALIZED; 99195fa0405SHaiyang Zhang 99295fa0405SHaiyang Zhang return ret; 99395fa0405SHaiyang Zhang } 99495fa0405SHaiyang Zhang 99595fa0405SHaiyang Zhang static int rndis_filter_close_device(struct rndis_device *dev) 99695fa0405SHaiyang Zhang { 99795fa0405SHaiyang Zhang int ret; 99895fa0405SHaiyang Zhang 99995fa0405SHaiyang Zhang if (dev->state != RNDIS_DEV_DATAINITIALIZED) 100095fa0405SHaiyang Zhang return 0; 100195fa0405SHaiyang Zhang 10024f19c0d8Sstephen hemminger /* Make sure rndis_set_multicast doesn't re-enable filter! */ 10034f19c0d8Sstephen hemminger cancel_work_sync(&dev->mcast_work); 10044f19c0d8Sstephen hemminger 100595fa0405SHaiyang Zhang ret = rndis_filter_set_packet_filter(dev, 0); 1006c3582a2cSHaiyang Zhang if (ret == -ENODEV) 1007c3582a2cSHaiyang Zhang ret = 0; 1008c3582a2cSHaiyang Zhang 100995fa0405SHaiyang Zhang if (ret == 0) 101095fa0405SHaiyang Zhang dev->state = RNDIS_DEV_INITIALIZED; 101195fa0405SHaiyang Zhang 101295fa0405SHaiyang Zhang return ret; 101395fa0405SHaiyang Zhang } 101495fa0405SHaiyang Zhang 10155b54dac8SHaiyang Zhang static void netvsc_sc_open(struct vmbus_channel *new_sc) 10165b54dac8SHaiyang Zhang { 10173d541ac5SVitaly Kuznetsov struct net_device *ndev = 10183d541ac5SVitaly Kuznetsov hv_get_drvdata(new_sc->primary_channel->device_obj); 1019867047c4Sstephen hemminger struct net_device_context *ndev_ctx = netdev_priv(ndev); 1020867047c4Sstephen hemminger struct netvsc_device *nvscdev; 10215b54dac8SHaiyang Zhang u16 chn_index = new_sc->offermsg.offer.sub_channel_index; 10226de38af6Sstephen hemminger struct netvsc_channel *nvchan; 10236de38af6Sstephen hemminger int ret; 10245b54dac8SHaiyang Zhang 1025867047c4Sstephen hemminger /* This is safe because this callback only happens when 1026867047c4Sstephen hemminger * new device is being setup and waiting on the channel_init_wait. 1027867047c4Sstephen hemminger */ 1028867047c4Sstephen hemminger nvscdev = rcu_dereference_raw(ndev_ctx->nvdev); 1029867047c4Sstephen hemminger if (!nvscdev || chn_index >= nvscdev->num_chn) 10305b54dac8SHaiyang Zhang return; 10315b54dac8SHaiyang Zhang 10326de38af6Sstephen hemminger nvchan = nvscdev->chan_table + chn_index; 10336de38af6Sstephen hemminger 1034b1dd90ceSK. Y. Srinivasan /* Because the device uses NAPI, all the interrupt batching and 1035b1dd90ceSK. Y. Srinivasan * control is done via Net softirq, not the channel handling 1036b1dd90ceSK. Y. Srinivasan */ 1037b1dd90ceSK. Y. Srinivasan set_channel_read_mode(new_sc, HV_CALL_ISR); 1038b1dd90ceSK. Y. Srinivasan 1039bffb1842SK. Y. Srinivasan /* Set the channel before opening.*/ 1040bffb1842SK. Y. Srinivasan nvchan->channel = new_sc; 1041bffb1842SK. Y. Srinivasan 1042a7f99d0fSStephen Hemminger ret = vmbus_open(new_sc, netvsc_ring_bytes, 1043a7f99d0fSStephen Hemminger netvsc_ring_bytes, NULL, 0, 10446de38af6Sstephen hemminger netvsc_channel_cb, nvchan); 104576bb5db5Sstephen hemminger if (ret == 0) 10466de38af6Sstephen hemminger napi_enable(&nvchan->napi); 104776bb5db5Sstephen hemminger else 10488195b139SStephen Hemminger netdev_notice(ndev, "sub channel open failed: %d\n", ret); 104915a863bfSstephen hemminger 10508f2bb1deSStephen Hemminger if (atomic_inc_return(&nvscdev->open_chn) == nvscdev->num_chn) 1051732e4985Sstephen hemminger wake_up(&nvscdev->subchan_open); 10525b54dac8SHaiyang Zhang } 10535b54dac8SHaiyang Zhang 10548195b139SStephen Hemminger /* Open sub-channels after completing the handling of the device probe. 10558195b139SStephen Hemminger * This breaks overlap of processing the host message for the 10568195b139SStephen Hemminger * new primary channel with the initialization of sub-channels. 10578195b139SStephen Hemminger */ 10588195b139SStephen Hemminger void rndis_set_subchannel(struct work_struct *w) 10598195b139SStephen Hemminger { 10608195b139SStephen Hemminger struct netvsc_device *nvdev 10618195b139SStephen Hemminger = container_of(w, struct netvsc_device, subchan_work); 10628195b139SStephen Hemminger struct nvsp_message *init_packet = &nvdev->channel_init_pkt; 10638195b139SStephen Hemminger struct net_device_context *ndev_ctx; 10648195b139SStephen Hemminger struct rndis_device *rdev; 10658195b139SStephen Hemminger struct net_device *ndev; 10668195b139SStephen Hemminger struct hv_device *hv_dev; 10678195b139SStephen Hemminger int i, ret; 10688195b139SStephen Hemminger 10698195b139SStephen Hemminger if (!rtnl_trylock()) { 10708195b139SStephen Hemminger schedule_work(w); 10718195b139SStephen Hemminger return; 10728195b139SStephen Hemminger } 10738195b139SStephen Hemminger 10748195b139SStephen Hemminger rdev = nvdev->extension; 10758195b139SStephen Hemminger if (!rdev) 10768195b139SStephen Hemminger goto unlock; /* device was removed */ 10778195b139SStephen Hemminger 10788195b139SStephen Hemminger ndev = rdev->ndev; 10798195b139SStephen Hemminger ndev_ctx = netdev_priv(ndev); 10808195b139SStephen Hemminger hv_dev = ndev_ctx->device_ctx; 10818195b139SStephen Hemminger 10828195b139SStephen Hemminger memset(init_packet, 0, sizeof(struct nvsp_message)); 10838195b139SStephen Hemminger init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; 10848195b139SStephen Hemminger init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; 10858195b139SStephen Hemminger init_packet->msg.v5_msg.subchn_req.num_subchannels = 10868195b139SStephen Hemminger nvdev->num_chn - 1; 10878195b139SStephen Hemminger ret = vmbus_sendpacket(hv_dev->channel, init_packet, 10888195b139SStephen Hemminger sizeof(struct nvsp_message), 10898195b139SStephen Hemminger (unsigned long)init_packet, 10908195b139SStephen Hemminger VM_PKT_DATA_INBAND, 10918195b139SStephen Hemminger VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); 10928195b139SStephen Hemminger if (ret) { 10938195b139SStephen Hemminger netdev_err(ndev, "sub channel allocate send failed: %d\n", ret); 10948195b139SStephen Hemminger goto failed; 10958195b139SStephen Hemminger } 10968195b139SStephen Hemminger 10978195b139SStephen Hemminger wait_for_completion(&nvdev->channel_init_wait); 10988195b139SStephen Hemminger if (init_packet->msg.v5_msg.subchn_comp.status != NVSP_STAT_SUCCESS) { 10998195b139SStephen Hemminger netdev_err(ndev, "sub channel request failed\n"); 11008195b139SStephen Hemminger goto failed; 11018195b139SStephen Hemminger } 11028195b139SStephen Hemminger 11038195b139SStephen Hemminger nvdev->num_chn = 1 + 11048195b139SStephen Hemminger init_packet->msg.v5_msg.subchn_comp.num_subchannels; 11058195b139SStephen Hemminger 11068195b139SStephen Hemminger /* wait for all sub channels to open */ 11078195b139SStephen Hemminger wait_event(nvdev->subchan_open, 11088195b139SStephen Hemminger atomic_read(&nvdev->open_chn) == nvdev->num_chn); 11098195b139SStephen Hemminger 11108195b139SStephen Hemminger /* ignore failues from setting rss parameters, still have channels */ 11118195b139SStephen Hemminger rndis_filter_set_rss_param(rdev, netvsc_hash_key); 11128195b139SStephen Hemminger 11138195b139SStephen Hemminger netif_set_real_num_tx_queues(ndev, nvdev->num_chn); 11148195b139SStephen Hemminger netif_set_real_num_rx_queues(ndev, nvdev->num_chn); 11158195b139SStephen Hemminger 1116a6fb6aa3SHaiyang Zhang for (i = 0; i < VRSS_SEND_TAB_SIZE; i++) 1117a6fb6aa3SHaiyang Zhang ndev_ctx->tx_table[i] = i % nvdev->num_chn; 1118a6fb6aa3SHaiyang Zhang 11198195b139SStephen Hemminger rtnl_unlock(); 11208195b139SStephen Hemminger return; 11218195b139SStephen Hemminger 11228195b139SStephen Hemminger failed: 11238195b139SStephen Hemminger /* fallback to only primary channel */ 11248195b139SStephen Hemminger for (i = 1; i < nvdev->num_chn; i++) 11258195b139SStephen Hemminger netif_napi_del(&nvdev->chan_table[i].napi); 11268195b139SStephen Hemminger 11278195b139SStephen Hemminger nvdev->max_chn = 1; 11288195b139SStephen Hemminger nvdev->num_chn = 1; 11298195b139SStephen Hemminger unlock: 11308195b139SStephen Hemminger rtnl_unlock(); 11318195b139SStephen Hemminger } 11328195b139SStephen Hemminger 1133aefd80e8SVitaly Kuznetsov static int rndis_netdev_set_hwcaps(struct rndis_device *rndis_device, 1134aefd80e8SVitaly Kuznetsov struct netvsc_device *nvdev) 113595fa0405SHaiyang Zhang { 1136aefd80e8SVitaly Kuznetsov struct net_device *net = rndis_device->ndev; 11373d541ac5SVitaly Kuznetsov struct net_device_context *net_device_ctx = netdev_priv(net); 113823312a3bSstephen hemminger struct ndis_offload hwcaps; 11394a0e70aeSKY Srinivasan struct ndis_offload_params offloads; 114023312a3bSstephen hemminger unsigned int gso_max_size = GSO_MAX_SIZE; 1141aefd80e8SVitaly Kuznetsov int ret; 114295fa0405SHaiyang Zhang 114323312a3bSstephen hemminger /* Find HW offload capabilities */ 1144aefd80e8SVitaly Kuznetsov ret = rndis_query_hwcaps(rndis_device, nvdev, &hwcaps); 11459749fed5Sstephen hemminger if (ret != 0) 1146aefd80e8SVitaly Kuznetsov return ret; 114723312a3bSstephen hemminger 114823312a3bSstephen hemminger /* A value of zero means "no change"; now turn on what we want. */ 11494a0e70aeSKY Srinivasan memset(&offloads, 0, sizeof(struct ndis_offload_params)); 115023312a3bSstephen hemminger 115123312a3bSstephen hemminger /* Linux does not care about IP checksum, always does in kernel */ 115223312a3bSstephen hemminger offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED; 115323312a3bSstephen hemminger 1154aefd80e8SVitaly Kuznetsov /* Reset previously set hw_features flags */ 1155aefd80e8SVitaly Kuznetsov net->hw_features &= ~NETVSC_SUPPORTED_HW_FEATURES; 1156aefd80e8SVitaly Kuznetsov net_device_ctx->tx_checksum_mask = 0; 1157aefd80e8SVitaly Kuznetsov 115823312a3bSstephen hemminger /* Compute tx offload settings based on hw capabilities */ 1159aefd80e8SVitaly Kuznetsov net->hw_features |= NETIF_F_RXCSUM; 116023312a3bSstephen hemminger 116123312a3bSstephen hemminger if ((hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_ALL_TCP4) == NDIS_TXCSUM_ALL_TCP4) { 116223312a3bSstephen hemminger /* Can checksum TCP */ 116323312a3bSstephen hemminger net->hw_features |= NETIF_F_IP_CSUM; 116423312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_TCP; 116523312a3bSstephen hemminger 11664a0e70aeSKY Srinivasan offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 116723312a3bSstephen hemminger 116823312a3bSstephen hemminger if (hwcaps.lsov2.ip4_encap & NDIS_OFFLOAD_ENCAP_8023) { 11694a0e70aeSKY Srinivasan offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; 117023312a3bSstephen hemminger net->hw_features |= NETIF_F_TSO; 117123312a3bSstephen hemminger 117223312a3bSstephen hemminger if (hwcaps.lsov2.ip4_maxsz < gso_max_size) 117323312a3bSstephen hemminger gso_max_size = hwcaps.lsov2.ip4_maxsz; 117423312a3bSstephen hemminger } 117523312a3bSstephen hemminger 117623312a3bSstephen hemminger if (hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) { 117723312a3bSstephen hemminger offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 117823312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_UDP; 117923312a3bSstephen hemminger } 118023312a3bSstephen hemminger } 118123312a3bSstephen hemminger 118223312a3bSstephen hemminger if ((hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_ALL_TCP6) == NDIS_TXCSUM_ALL_TCP6) { 118323312a3bSstephen hemminger net->hw_features |= NETIF_F_IPV6_CSUM; 118423312a3bSstephen hemminger 118523312a3bSstephen hemminger offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 118623312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_TCP; 118723312a3bSstephen hemminger 118823312a3bSstephen hemminger if ((hwcaps.lsov2.ip6_encap & NDIS_OFFLOAD_ENCAP_8023) && 118923312a3bSstephen hemminger (hwcaps.lsov2.ip6_opts & NDIS_LSOV2_CAP_IP6) == NDIS_LSOV2_CAP_IP6) { 119023312a3bSstephen hemminger offloads.lso_v2_ipv6 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; 119123312a3bSstephen hemminger net->hw_features |= NETIF_F_TSO6; 119223312a3bSstephen hemminger 119323312a3bSstephen hemminger if (hwcaps.lsov2.ip6_maxsz < gso_max_size) 119423312a3bSstephen hemminger gso_max_size = hwcaps.lsov2.ip6_maxsz; 119523312a3bSstephen hemminger } 119623312a3bSstephen hemminger 119723312a3bSstephen hemminger if (hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_CAP_UDP6) { 119823312a3bSstephen hemminger offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; 119923312a3bSstephen hemminger net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_UDP; 120023312a3bSstephen hemminger } 120123312a3bSstephen hemminger } 120223312a3bSstephen hemminger 1203aefd80e8SVitaly Kuznetsov /* In case some hw_features disappeared we need to remove them from 1204aefd80e8SVitaly Kuznetsov * net->features list as they're no longer supported. 1205aefd80e8SVitaly Kuznetsov */ 1206aefd80e8SVitaly Kuznetsov net->features &= ~NETVSC_SUPPORTED_HW_FEATURES | net->hw_features; 1207aefd80e8SVitaly Kuznetsov 120823312a3bSstephen hemminger netif_set_gso_max_size(net, gso_max_size); 12094a0e70aeSKY Srinivasan 1210aefd80e8SVitaly Kuznetsov ret = rndis_filter_set_offload_params(net, nvdev, &offloads); 1211aefd80e8SVitaly Kuznetsov 1212aefd80e8SVitaly Kuznetsov return ret; 1213aefd80e8SVitaly Kuznetsov } 1214aefd80e8SVitaly Kuznetsov 1215aefd80e8SVitaly Kuznetsov struct netvsc_device *rndis_filter_device_add(struct hv_device *dev, 1216aefd80e8SVitaly Kuznetsov struct netvsc_device_info *device_info) 1217aefd80e8SVitaly Kuznetsov { 1218aefd80e8SVitaly Kuznetsov struct net_device *net = hv_get_drvdata(dev); 1219aefd80e8SVitaly Kuznetsov struct netvsc_device *net_device; 1220aefd80e8SVitaly Kuznetsov struct rndis_device *rndis_device; 1221aefd80e8SVitaly Kuznetsov struct ndis_recv_scale_cap rsscap; 1222aefd80e8SVitaly Kuznetsov u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); 1223aefd80e8SVitaly Kuznetsov u32 mtu, size; 1224aefd80e8SVitaly Kuznetsov u32 num_possible_rss_qs; 1225aefd80e8SVitaly Kuznetsov int i, ret; 1226aefd80e8SVitaly Kuznetsov 1227aefd80e8SVitaly Kuznetsov rndis_device = get_rndis_device(); 1228aefd80e8SVitaly Kuznetsov if (!rndis_device) 1229aefd80e8SVitaly Kuznetsov return ERR_PTR(-ENODEV); 1230aefd80e8SVitaly Kuznetsov 1231aefd80e8SVitaly Kuznetsov /* Let the inner driver handle this first to create the netvsc channel 1232aefd80e8SVitaly Kuznetsov * NOTE! Once the channel is created, we may get a receive callback 1233aefd80e8SVitaly Kuznetsov * (RndisFilterOnReceive()) before this call is completed 1234aefd80e8SVitaly Kuznetsov */ 1235aefd80e8SVitaly Kuznetsov net_device = netvsc_device_add(dev, device_info); 1236aefd80e8SVitaly Kuznetsov if (IS_ERR(net_device)) { 1237aefd80e8SVitaly Kuznetsov kfree(rndis_device); 1238aefd80e8SVitaly Kuznetsov return net_device; 1239aefd80e8SVitaly Kuznetsov } 1240aefd80e8SVitaly Kuznetsov 1241aefd80e8SVitaly Kuznetsov /* Initialize the rndis device */ 1242aefd80e8SVitaly Kuznetsov net_device->max_chn = 1; 1243aefd80e8SVitaly Kuznetsov net_device->num_chn = 1; 1244aefd80e8SVitaly Kuznetsov 1245aefd80e8SVitaly Kuznetsov net_device->extension = rndis_device; 1246aefd80e8SVitaly Kuznetsov rndis_device->ndev = net; 1247aefd80e8SVitaly Kuznetsov 1248aefd80e8SVitaly Kuznetsov /* Send the rndis initialization message */ 1249aefd80e8SVitaly Kuznetsov ret = rndis_filter_init_device(rndis_device, net_device); 1250aefd80e8SVitaly Kuznetsov if (ret != 0) 1251aefd80e8SVitaly Kuznetsov goto err_dev_remv; 1252aefd80e8SVitaly Kuznetsov 1253aefd80e8SVitaly Kuznetsov /* Get the MTU from the host */ 1254aefd80e8SVitaly Kuznetsov size = sizeof(u32); 1255aefd80e8SVitaly Kuznetsov ret = rndis_filter_query_device(rndis_device, net_device, 1256aefd80e8SVitaly Kuznetsov RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, 1257aefd80e8SVitaly Kuznetsov &mtu, &size); 1258aefd80e8SVitaly Kuznetsov if (ret == 0 && size == sizeof(u32) && mtu < net->mtu) 1259aefd80e8SVitaly Kuznetsov net->mtu = mtu; 1260aefd80e8SVitaly Kuznetsov 1261aefd80e8SVitaly Kuznetsov /* Get the mac address */ 1262aefd80e8SVitaly Kuznetsov ret = rndis_filter_query_device_mac(rndis_device, net_device); 1263aefd80e8SVitaly Kuznetsov if (ret != 0) 1264aefd80e8SVitaly Kuznetsov goto err_dev_remv; 1265aefd80e8SVitaly Kuznetsov 1266aefd80e8SVitaly Kuznetsov memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); 1267aefd80e8SVitaly Kuznetsov 1268aefd80e8SVitaly Kuznetsov /* Query and set hardware capabilities */ 1269aefd80e8SVitaly Kuznetsov ret = rndis_netdev_set_hwcaps(rndis_device, net_device); 1270aefd80e8SVitaly Kuznetsov if (ret != 0) 12714a0e70aeSKY Srinivasan goto err_dev_remv; 12724a0e70aeSKY Srinivasan 1273867047c4Sstephen hemminger rndis_filter_query_device_link_status(rndis_device, net_device); 127495fa0405SHaiyang Zhang 127593ba2222SVitaly Kuznetsov netdev_dbg(net, "Device MAC %pM link state %s\n", 127695fa0405SHaiyang Zhang rndis_device->hw_mac_adr, 1277dedb459eSHaiyang Zhang rndis_device->link_state ? "down" : "up"); 127895fa0405SHaiyang Zhang 12795b54dac8SHaiyang Zhang if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) 12809749fed5Sstephen hemminger return net_device; 12815b54dac8SHaiyang Zhang 1282867047c4Sstephen hemminger rndis_filter_query_link_speed(rndis_device, net_device); 1283b37879e6SHaiyang Zhang 12845b54dac8SHaiyang Zhang /* vRSS setup */ 12855b54dac8SHaiyang Zhang memset(&rsscap, 0, rsscap_size); 1286867047c4Sstephen hemminger ret = rndis_filter_query_device(rndis_device, net_device, 12875b54dac8SHaiyang Zhang OID_GEN_RECEIVE_SCALE_CAPABILITIES, 12885b54dac8SHaiyang Zhang &rsscap, &rsscap_size); 12895b54dac8SHaiyang Zhang if (ret || rsscap.num_recv_que < 2) 12905b54dac8SHaiyang Zhang goto out; 12915b54dac8SHaiyang Zhang 129225a39f7fSHaiyang Zhang /* This guarantees that num_possible_rss_qs <= num_online_cpus */ 129325a39f7fSHaiyang Zhang num_possible_rss_qs = min_t(u32, num_online_cpus(), 12943071ada4Sstephen hemminger rsscap.num_recv_que); 12953071ada4Sstephen hemminger 12963071ada4Sstephen hemminger net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, num_possible_rss_qs); 12978ebdcc52SAndrew Schwartzmeyer 12988ebdcc52SAndrew Schwartzmeyer /* We will use the given number of channels if available. */ 12993071ada4Sstephen hemminger net_device->num_chn = min(net_device->max_chn, device_info->num_chn); 1300ff4a4419Sstephen hemminger 1301ff4a4419Sstephen hemminger for (i = 0; i < ITAB_NUM; i++) 130247371300SHaiyang Zhang rndis_device->rx_table[i] = ethtool_rxfh_indir_default( 130347371300SHaiyang Zhang i, net_device->num_chn); 1304ff4a4419Sstephen hemminger 1305732e4985Sstephen hemminger atomic_set(&net_device->open_chn, 1); 13068195b139SStephen Hemminger vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); 13075b54dac8SHaiyang Zhang 13087426b1a5Sstephen hemminger for (i = 1; i < net_device->num_chn; i++) { 13097426b1a5Sstephen hemminger ret = netvsc_alloc_recv_comp_ring(net_device, i); 13107426b1a5Sstephen hemminger if (ret) { 13117426b1a5Sstephen hemminger while (--i != 0) 13127426b1a5Sstephen hemminger vfree(net_device->chan_table[i].mrc.slots); 13137426b1a5Sstephen hemminger goto out; 13147426b1a5Sstephen hemminger } 13157426b1a5Sstephen hemminger } 13167426b1a5Sstephen hemminger 13178195b139SStephen Hemminger for (i = 1; i < net_device->num_chn; i++) 13188195b139SStephen Hemminger netif_napi_add(net, &net_device->chan_table[i].napi, 13198195b139SStephen Hemminger netvsc_poll, NAPI_POLL_WEIGHT); 13205b54dac8SHaiyang Zhang 13218195b139SStephen Hemminger if (net_device->num_chn > 1) 13228195b139SStephen Hemminger schedule_work(&net_device->subchan_work); 13235362855aSVitaly Kuznetsov 13245b54dac8SHaiyang Zhang out: 13258195b139SStephen Hemminger /* if unavailable, just proceed with one queue */ 132659995370SAndrew Schwartzmeyer if (ret) { 132759995370SAndrew Schwartzmeyer net_device->max_chn = 1; 13285b54dac8SHaiyang Zhang net_device->num_chn = 1; 132959995370SAndrew Schwartzmeyer } 1330b3e6b82aSKY Srinivasan 13319749fed5Sstephen hemminger return net_device; 13324a0e70aeSKY Srinivasan 13334a0e70aeSKY Srinivasan err_dev_remv: 13342289f0aaSstephen hemminger rndis_filter_device_remove(dev, net_device); 13359749fed5Sstephen hemminger return ERR_PTR(ret); 133695fa0405SHaiyang Zhang } 133795fa0405SHaiyang Zhang 13382289f0aaSstephen hemminger void rndis_filter_device_remove(struct hv_device *dev, 13392289f0aaSstephen hemminger struct netvsc_device *net_dev) 134095fa0405SHaiyang Zhang { 134195fa0405SHaiyang Zhang struct rndis_device *rndis_dev = net_dev->extension; 1342d66ab514SHaiyang Zhang 1343a7483ec0SStephen Hemminger /* Don't try and setup sub channels if about to halt */ 1344a7483ec0SStephen Hemminger cancel_work_sync(&net_dev->subchan_work); 1345a7483ec0SStephen Hemminger 134695fa0405SHaiyang Zhang /* Halt and release the rndis device */ 134795fa0405SHaiyang Zhang rndis_filter_halt_device(rndis_dev); 134895fa0405SHaiyang Zhang 134995fa0405SHaiyang Zhang net_dev->extension = NULL; 135095fa0405SHaiyang Zhang 135195fa0405SHaiyang Zhang netvsc_device_remove(dev); 13528195b139SStephen Hemminger kfree(rndis_dev); 135395fa0405SHaiyang Zhang } 135495fa0405SHaiyang Zhang 13552f5fa6c8SVitaly Kuznetsov int rndis_filter_open(struct netvsc_device *nvdev) 135695fa0405SHaiyang Zhang { 13572f5fa6c8SVitaly Kuznetsov if (!nvdev) 135895fa0405SHaiyang Zhang return -EINVAL; 135995fa0405SHaiyang Zhang 13602f5fa6c8SVitaly Kuznetsov return rndis_filter_open_device(nvdev->extension); 136195fa0405SHaiyang Zhang } 136295fa0405SHaiyang Zhang 13632f5fa6c8SVitaly Kuznetsov int rndis_filter_close(struct netvsc_device *nvdev) 136495fa0405SHaiyang Zhang { 13655fccab3bSHaiyang Zhang if (!nvdev) 136695fa0405SHaiyang Zhang return -EINVAL; 136795fa0405SHaiyang Zhang 13685fccab3bSHaiyang Zhang return rndis_filter_close_device(nvdev->extension); 136995fa0405SHaiyang Zhang } 1370ea383bf1Sstephen hemminger 1371ea383bf1Sstephen hemminger bool rndis_filter_opened(const struct netvsc_device *nvdev) 1372ea383bf1Sstephen hemminger { 13730da6edbdSStephen Hemminger const struct rndis_device *dev = nvdev->extension; 13740da6edbdSStephen Hemminger 13750da6edbdSStephen Hemminger return dev->state == RNDIS_DEV_DATAINITIALIZED; 1376ea383bf1Sstephen hemminger } 1377