2 * Copyright (c) 2009-2012 Microsoft Corp.
3 * Copyright (c) 2010-2012 Citrix Inc.
4 * Copyright (c) 2012 NetApp Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/param.h>
31 #include <sys/socket.h>
33 #include <sys/mutex.h>
34 #include <net/if_arp.h>
35 #include <net/ethernet.h>
36 #include <sys/types.h>
37 #include <machine/atomic.h>
40 #include <vm/vm_param.h>
43 #include <dev/hyperv/include/hyperv.h>
44 #include "hv_net_vsc.h"
46 #include "hv_rndis_filter.h"
50 * Forward declarations
52 static int hv_rf_send_request(rndis_device *device, rndis_request *request,
53 uint32_t message_type);
54 static void hv_rf_receive_response(rndis_device *device, rndis_msg *response);
55 static void hv_rf_receive_indicate_status(rndis_device *device,
57 static void hv_rf_receive_data(rndis_device *device, rndis_msg *message,
59 static int hv_rf_query_device(rndis_device *device, uint32_t oid,
60 void *result, uint32_t *result_size);
61 static inline int hv_rf_query_device_mac(rndis_device *device);
62 static inline int hv_rf_query_device_link_status(rndis_device *device);
63 static int hv_rf_set_packet_filter(rndis_device *device, uint32_t new_filter);
64 static int hv_rf_init_device(rndis_device *device);
65 static int hv_rf_open_device(rndis_device *device);
66 static int hv_rf_close_device(rndis_device *device);
67 static void hv_rf_on_send_completion(void *context);
68 static void hv_rf_on_send_request_completion(void *context);
69 static void hv_rf_on_send_request_halt_completion(void *context);
73 * Allow module_param to work and override to switch to promiscuous mode.
75 static inline rndis_device *
76 hv_get_rndis_device(void)
80 device = malloc(sizeof(rndis_device), M_DEVBUF, M_NOWAIT | M_ZERO);
85 mtx_init(&device->req_lock, "HV-FRL", NULL, MTX_SPIN | MTX_RECURSE);
87 /* Same effect as STAILQ_HEAD_INITIALIZER() static initializer */
88 STAILQ_INIT(&device->myrequest_list);
90 device->state = RNDIS_DEV_UNINITIALIZED;
99 hv_put_rndis_device(rndis_device *device)
101 mtx_destroy(&device->req_lock);
102 free(device, M_DEVBUF);
108 static inline rndis_request *
109 hv_rndis_request(rndis_device *device, uint32_t message_type,
110 uint32_t message_length)
112 rndis_request *request;
113 rndis_msg *rndis_mesg;
114 rndis_set_request *set;
116 request = malloc(sizeof(rndis_request), M_DEVBUF, M_NOWAIT | M_ZERO);
117 if (request == NULL) {
121 sema_init(&request->wait_sema, 0, "rndis sema");
123 rndis_mesg = &request->request_msg;
124 rndis_mesg->ndis_msg_type = message_type;
125 rndis_mesg->msg_len = message_length;
128 * Set the request id. This field is always after the rndis header
129 * for request/response packet types so we just use the set_request
132 set = &rndis_mesg->msg.set_request;
133 set->request_id = atomic_fetchadd_int(&device->new_request_id, 1);
134 /* Increment to get the new value (call above returns old value) */
135 set->request_id += 1;
137 /* Add to the request list */
138 mtx_lock_spin(&device->req_lock);
139 STAILQ_INSERT_TAIL(&device->myrequest_list, request, mylist_entry);
140 mtx_unlock_spin(&device->req_lock);
149 hv_put_rndis_request(rndis_device *device, rndis_request *request)
151 mtx_lock_spin(&device->req_lock);
152 /* Fixme: Has O(n) performance */
154 * XXXKYS: Use Doubly linked lists.
156 STAILQ_REMOVE(&device->myrequest_list, request, rndis_request_,
158 mtx_unlock_spin(&device->req_lock);
160 sema_destroy(&request->wait_sema);
161 free(request, M_DEVBUF);
168 hv_rf_send_request(rndis_device *device, rndis_request *request,
169 uint32_t message_type)
172 netvsc_packet *packet;
174 /* Set up the packet to send it */
175 packet = &request->pkt;
177 packet->is_data_pkt = FALSE;
178 packet->tot_data_buf_len = request->request_msg.msg_len;
179 packet->page_buf_count = 1;
181 packet->page_buffers[0].pfn =
182 hv_get_phys_addr(&request->request_msg) >> PAGE_SHIFT;
183 packet->page_buffers[0].length = request->request_msg.msg_len;
184 packet->page_buffers[0].offset =
185 (unsigned long)&request->request_msg & (PAGE_SIZE - 1);
187 packet->compl.send.send_completion_context = request; /* packet */
188 if (message_type != REMOTE_NDIS_HALT_MSG) {
189 packet->compl.send.on_send_completion =
190 hv_rf_on_send_request_completion;
192 packet->compl.send.on_send_completion =
193 hv_rf_on_send_request_halt_completion;
195 packet->compl.send.send_completion_tid = (unsigned long)device;
197 ret = hv_nv_on_send(device->net_dev->dev, packet);
203 * RNDIS filter receive response
206 hv_rf_receive_response(rndis_device *device, rndis_msg *response)
208 rndis_request *request = NULL;
209 rndis_request *next_request;
210 boolean_t found = FALSE;
212 mtx_lock_spin(&device->req_lock);
213 request = STAILQ_FIRST(&device->myrequest_list);
214 while (request != NULL) {
216 * All request/response message contains request_id as the
219 if (request->request_msg.msg.init_request.request_id ==
220 response->msg.init_complete.request_id) {
224 next_request = STAILQ_NEXT(request, mylist_entry);
225 request = next_request;
227 mtx_unlock_spin(&device->req_lock);
230 if (response->msg_len <= sizeof(rndis_msg)) {
231 memcpy(&request->response_msg, response,
234 if (response->ndis_msg_type == REMOTE_NDIS_RESET_CMPLT) {
235 /* Does not have a request id field */
236 request->response_msg.msg.reset_complete.status =
237 STATUS_BUFFER_OVERFLOW;
239 request->response_msg.msg.init_complete.status =
240 STATUS_BUFFER_OVERFLOW;
244 sema_post(&request->wait_sema);
249 * RNDIS filter receive indicate status
252 hv_rf_receive_indicate_status(rndis_device *device, rndis_msg *response)
254 rndis_indicate_status *indicate = &response->msg.indicate_status;
256 if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) {
257 netvsc_linkstatus_callback(device->net_dev->dev, 1);
258 } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) {
259 netvsc_linkstatus_callback(device->net_dev->dev, 0);
266 * RNDIS filter receive data
269 hv_rf_receive_data(rndis_device *device, rndis_msg *message, netvsc_packet *pkt)
271 rndis_packet *rndis_pkt;
272 rndis_per_packet_info *rppi;
273 ndis_8021q_info *rppi_vlan_info;
274 uint32_t data_offset;
276 rndis_pkt = &message->msg.packet;
279 * Fixme: Handle multiple rndis pkt msgs that may be enclosed in this
280 * netvsc packet (ie tot_data_buf_len != message_length)
283 /* Remove rndis header, then pass data packet up the stack */
284 data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset;
286 /* L2 frame length, with L2 header, not including CRC */
287 pkt->tot_data_buf_len = rndis_pkt->data_length;
288 pkt->page_buffers[0].offset += data_offset;
289 /* Buffer length now L2 frame length plus trailing junk */
290 pkt->page_buffers[0].length -= data_offset;
292 pkt->is_data_pkt = TRUE;
297 * Read the VLAN ID if supplied by the Hyper-V infrastructure.
298 * Let higher-level driver code decide if it wants to use it.
299 * Ignore CFI, priority for now as FreeBSD does not support these.
301 if (rndis_pkt->per_pkt_info_offset != 0) {
302 /* rppi struct exists; compute its address */
303 rppi = (rndis_per_packet_info *)((uint8_t *)rndis_pkt +
304 rndis_pkt->per_pkt_info_offset);
305 /* if VLAN ppi struct, get the VLAN ID */
306 if (rppi->type == ieee_8021q_info) {
307 rppi_vlan_info = (ndis_8021q_info *)((uint8_t *)rppi
308 + rppi->per_packet_info_offset);
309 pkt->vlan_tci = rppi_vlan_info->u1.s1.vlan_id;
313 netvsc_recv(device->net_dev->dev, pkt);
317 * RNDIS filter on receive
320 hv_rf_on_receive(struct hv_device *device, netvsc_packet *pkt)
322 hn_softc_t *sc = device_get_softc(device->device);
323 netvsc_dev *net_dev = sc->net_dev;
324 rndis_device *rndis_dev;
325 rndis_msg rndis_mesg;
326 rndis_msg *rndis_hdr;
328 /* Make sure the rndis device state is initialized */
329 if (net_dev->extension == NULL)
332 rndis_dev = (rndis_device *)net_dev->extension;
333 if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED)
336 /* Shift virtual page number to form virtual page address */
337 rndis_hdr = (rndis_msg *)(pkt->page_buffers[0].pfn << PAGE_SHIFT);
339 rndis_hdr = (void *)((unsigned long)rndis_hdr
340 + pkt->page_buffers[0].offset);
343 * Make sure we got a valid rndis message
344 * Fixme: There seems to be a bug in set completion msg where
345 * its msg_len is 16 bytes but the byte_count field in the
346 * xfer page range shows 52 bytes
349 if (pkt->tot_data_buf_len != rndis_hdr->msg_len) {
350 DPRINT_ERR(NETVSC, "invalid rndis message? (expected %u "
351 "bytes got %u)... dropping this message!",
352 rndis_hdr->msg_len, pkt->tot_data_buf_len);
359 memcpy(&rndis_mesg, rndis_hdr,
360 (rndis_hdr->msg_len > sizeof(rndis_msg)) ?
361 sizeof(rndis_msg) : rndis_hdr->msg_len);
363 switch (rndis_mesg.ndis_msg_type) {
366 case REMOTE_NDIS_PACKET_MSG:
367 hv_rf_receive_data(rndis_dev, &rndis_mesg, pkt);
369 /* completion messages */
370 case REMOTE_NDIS_INITIALIZE_CMPLT:
371 case REMOTE_NDIS_QUERY_CMPLT:
372 case REMOTE_NDIS_SET_CMPLT:
373 case REMOTE_NDIS_RESET_CMPLT:
374 case REMOTE_NDIS_KEEPALIVE_CMPLT:
375 hv_rf_receive_response(rndis_dev, &rndis_mesg);
377 /* notification message */
378 case REMOTE_NDIS_INDICATE_STATUS_MSG:
379 hv_rf_receive_indicate_status(rndis_dev, &rndis_mesg);
382 printf("hv_rf_on_receive(): Unknown msg_type 0x%x\n",
383 rndis_mesg.ndis_msg_type);
391 * RNDIS filter query device
394 hv_rf_query_device(rndis_device *device, uint32_t oid, void *result,
395 uint32_t *result_size)
397 rndis_request *request;
398 uint32_t in_result_size = *result_size;
399 rndis_query_request *query;
400 rndis_query_complete *query_complete;
404 request = hv_rndis_request(device, REMOTE_NDIS_QUERY_MSG,
405 RNDIS_MESSAGE_SIZE(rndis_query_request));
406 if (request == NULL) {
411 /* Set up the rndis query */
412 query = &request->request_msg.msg.query_request;
414 query->info_buffer_offset = sizeof(rndis_query_request);
415 query->info_buffer_length = 0;
416 query->device_vc_handle = 0;
418 ret = hv_rf_send_request(device, request, REMOTE_NDIS_QUERY_MSG);
420 /* Fixme: printf added */
421 printf("RNDISFILTER request failed to Send!\n");
425 sema_wait(&request->wait_sema);
427 /* Copy the response back */
428 query_complete = &request->response_msg.msg.query_complete;
430 if (query_complete->info_buffer_length > in_result_size) {
435 memcpy(result, (void *)((unsigned long)query_complete +
436 query_complete->info_buffer_offset),
437 query_complete->info_buffer_length);
439 *result_size = query_complete->info_buffer_length;
443 hv_put_rndis_request(device, request);
449 * RNDIS filter query device MAC address
452 hv_rf_query_device_mac(rndis_device *device)
454 uint32_t size = HW_MACADDR_LEN;
456 return (hv_rf_query_device(device,
457 RNDIS_OID_802_3_PERMANENT_ADDRESS, device->hw_mac_addr, &size));
461 * RNDIS filter query device link status
464 hv_rf_query_device_link_status(rndis_device *device)
466 uint32_t size = sizeof(uint32_t);
468 return (hv_rf_query_device(device,
469 RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, &device->link_status, &size));
473 * RNDIS filter set packet filter
474 * Sends an rndis request with the new filter, then waits for a response
476 * Returns zero on success, non-zero on failure.
479 hv_rf_set_packet_filter(rndis_device *device, uint32_t new_filter)
481 rndis_request *request;
482 rndis_set_request *set;
483 rndis_set_complete *set_complete;
487 request = hv_rndis_request(device, REMOTE_NDIS_SET_MSG,
488 RNDIS_MESSAGE_SIZE(rndis_set_request) + sizeof(uint32_t));
489 if (request == NULL) {
494 /* Set up the rndis set */
495 set = &request->request_msg.msg.set_request;
496 set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER;
497 set->info_buffer_length = sizeof(uint32_t);
498 set->info_buffer_offset = sizeof(rndis_set_request);
500 memcpy((void *)((unsigned long)set + sizeof(rndis_set_request)),
501 &new_filter, sizeof(uint32_t));
503 ret = hv_rf_send_request(device, request, REMOTE_NDIS_SET_MSG);
509 * Wait for the response from the host. Another thread will signal
510 * us when the response has arrived. In the failure case,
511 * sema_timedwait() returns a non-zero status after waiting 5 seconds.
513 ret = sema_timedwait(&request->wait_sema, 500);
515 /* Response received, check status */
516 set_complete = &request->response_msg.msg.set_complete;
517 status = set_complete->status;
518 if (status != RNDIS_STATUS_SUCCESS) {
519 /* Bad response status, return error */
524 * We cannot deallocate the request since we may still
525 * receive a send completion for it.
531 if (request != NULL) {
532 hv_put_rndis_request(device, request);
539 * RNDIS filter init device
542 hv_rf_init_device(rndis_device *device)
544 rndis_request *request;
545 rndis_initialize_request *init;
546 rndis_initialize_complete *init_complete;
550 request = hv_rndis_request(device, REMOTE_NDIS_INITIALIZE_MSG,
551 RNDIS_MESSAGE_SIZE(rndis_initialize_request));
557 /* Set up the rndis set */
558 init = &request->request_msg.msg.init_request;
559 init->major_version = RNDIS_MAJOR_VERSION;
560 init->minor_version = RNDIS_MINOR_VERSION;
562 * Per the RNDIS document, this should be set to the max MTU
563 * plus the header size. However, 2048 works fine, so leaving
566 init->max_xfer_size = 2048;
568 device->state = RNDIS_DEV_INITIALIZING;
570 ret = hv_rf_send_request(device, request, REMOTE_NDIS_INITIALIZE_MSG);
572 device->state = RNDIS_DEV_UNINITIALIZED;
576 sema_wait(&request->wait_sema);
578 init_complete = &request->response_msg.msg.init_complete;
579 status = init_complete->status;
580 if (status == RNDIS_STATUS_SUCCESS) {
581 device->state = RNDIS_DEV_INITIALIZED;
584 device->state = RNDIS_DEV_UNINITIALIZED;
590 hv_put_rndis_request(device, request);
596 #define HALT_COMPLETION_WAIT_COUNT 25
599 * RNDIS filter halt device
602 hv_rf_halt_device(rndis_device *device)
604 rndis_request *request;
605 rndis_halt_request *halt;
608 /* Attempt to do a rndis device halt */
609 request = hv_rndis_request(device, REMOTE_NDIS_HALT_MSG,
610 RNDIS_MESSAGE_SIZE(rndis_halt_request));
611 if (request == NULL) {
615 /* initialize "poor man's semaphore" */
616 request->halt_complete_flag = 0;
618 /* Set up the rndis set */
619 halt = &request->request_msg.msg.halt_request;
620 halt->request_id = atomic_fetchadd_int(&device->new_request_id, 1);
621 /* Increment to get the new value (call above returns old value) */
622 halt->request_id += 1;
624 ret = hv_rf_send_request(device, request, REMOTE_NDIS_HALT_MSG);
630 * Wait for halt response from halt callback. We must wait for
631 * the transaction response before freeing the request and other
634 for (i=HALT_COMPLETION_WAIT_COUNT; i > 0; i--) {
635 if (request->halt_complete_flag != 0) {
644 device->state = RNDIS_DEV_UNINITIALIZED;
646 if (request != NULL) {
647 hv_put_rndis_request(device, request);
654 * RNDIS filter open device
657 hv_rf_open_device(rndis_device *device)
661 if (device->state != RNDIS_DEV_INITIALIZED) {
665 if (hv_promisc_mode != 1) {
666 ret = hv_rf_set_packet_filter(device,
667 NDIS_PACKET_TYPE_BROADCAST |
668 NDIS_PACKET_TYPE_ALL_MULTICAST |
669 NDIS_PACKET_TYPE_DIRECTED);
671 ret = hv_rf_set_packet_filter(device,
672 NDIS_PACKET_TYPE_PROMISCUOUS);
676 device->state = RNDIS_DEV_DATAINITIALIZED;
683 * RNDIS filter close device
686 hv_rf_close_device(rndis_device *device)
690 if (device->state != RNDIS_DEV_DATAINITIALIZED) {
694 ret = hv_rf_set_packet_filter(device, 0);
696 device->state = RNDIS_DEV_INITIALIZED;
703 * RNDIS filter on device add
706 hv_rf_on_device_add(struct hv_device *device, void *additl_info)
710 rndis_device *rndis_dev;
711 netvsc_device_info *dev_info = (netvsc_device_info *)additl_info;
713 rndis_dev = hv_get_rndis_device();
714 if (rndis_dev == NULL) {
719 * Let the inner driver handle this first to create the netvsc channel
720 * NOTE! Once the channel is created, we may get a receive callback
721 * (hv_rf_on_receive()) before this call is completed.
722 * Note: Earlier code used a function pointer here.
724 net_dev = hv_nv_on_device_add(device, additl_info);
726 hv_put_rndis_device(rndis_dev);
732 * Initialize the rndis device
735 net_dev->extension = rndis_dev;
736 rndis_dev->net_dev = net_dev;
738 /* Send the rndis initialization message */
739 ret = hv_rf_init_device(rndis_dev);
742 * TODO: If rndis init failed, we will need to shut down
747 /* Get the mac address */
748 ret = hv_rf_query_device_mac(rndis_dev);
750 /* TODO: shut down rndis device and the channel */
753 memcpy(dev_info->mac_addr, rndis_dev->hw_mac_addr, HW_MACADDR_LEN);
755 hv_rf_query_device_link_status(rndis_dev);
757 dev_info->link_state = rndis_dev->link_status;
763 * RNDIS filter on device remove
766 hv_rf_on_device_remove(struct hv_device *device, boolean_t destroy_channel)
768 hn_softc_t *sc = device_get_softc(device->device);
769 netvsc_dev *net_dev = sc->net_dev;
770 rndis_device *rndis_dev = (rndis_device *)net_dev->extension;
773 /* Halt and release the rndis device */
774 ret = hv_rf_halt_device(rndis_dev);
776 hv_put_rndis_device(rndis_dev);
777 net_dev->extension = NULL;
779 /* Pass control to inner driver to remove the device */
780 ret |= hv_nv_on_device_remove(device, destroy_channel);
786 * RNDIS filter on open
789 hv_rf_on_open(struct hv_device *device)
791 hn_softc_t *sc = device_get_softc(device->device);
792 netvsc_dev *net_dev = sc->net_dev;
794 return (hv_rf_open_device((rndis_device *)net_dev->extension));
798 * RNDIS filter on close
801 hv_rf_on_close(struct hv_device *device)
803 hn_softc_t *sc = device_get_softc(device->device);
804 netvsc_dev *net_dev = sc->net_dev;
806 return (hv_rf_close_device((rndis_device *)net_dev->extension));
810 * RNDIS filter on send
813 hv_rf_on_send(struct hv_device *device, netvsc_packet *pkt)
815 rndis_filter_packet *filter_pkt;
816 rndis_msg *rndis_mesg;
817 rndis_packet *rndis_pkt;
818 rndis_per_packet_info *rppi;
819 ndis_8021q_info *rppi_vlan_info;
820 uint32_t rndis_msg_size;
823 /* Add the rndis header */
824 filter_pkt = (rndis_filter_packet *)pkt->extension;
826 memset(filter_pkt, 0, sizeof(rndis_filter_packet));
828 rndis_mesg = &filter_pkt->message;
829 rndis_msg_size = RNDIS_MESSAGE_SIZE(rndis_packet);
831 if (pkt->vlan_tci != 0) {
832 rndis_msg_size += sizeof(rndis_per_packet_info) +
833 sizeof(ndis_8021q_info);
836 rndis_mesg->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;
837 rndis_mesg->msg_len = pkt->tot_data_buf_len + rndis_msg_size;
839 rndis_pkt = &rndis_mesg->msg.packet;
840 rndis_pkt->data_offset = sizeof(rndis_packet);
841 rndis_pkt->data_length = pkt->tot_data_buf_len;
843 pkt->is_data_pkt = TRUE;
844 pkt->page_buffers[0].pfn = hv_get_phys_addr(rndis_mesg) >> PAGE_SHIFT;
845 pkt->page_buffers[0].offset =
846 (unsigned long)rndis_mesg & (PAGE_SIZE - 1);
847 pkt->page_buffers[0].length = rndis_msg_size;
849 /* Save the packet context */
850 filter_pkt->completion_context =
851 pkt->compl.send.send_completion_context;
854 pkt->compl.send.on_send_completion = hv_rf_on_send_completion;
855 pkt->compl.send.send_completion_context = filter_pkt;
858 * If there is a VLAN tag, we need to set up some additional
859 * fields so the Hyper-V infrastructure will stuff the VLAN tag
862 if (pkt->vlan_tci != 0) {
863 /* Move data offset past end of rppi + VLAN structs */
864 rndis_pkt->data_offset += sizeof(rndis_per_packet_info) +
865 sizeof(ndis_8021q_info);
867 /* must be set when we have rppi, VLAN info */
868 rndis_pkt->per_pkt_info_offset = sizeof(rndis_packet);
869 rndis_pkt->per_pkt_info_length = sizeof(rndis_per_packet_info) +
870 sizeof(ndis_8021q_info);
872 /* rppi immediately follows rndis_pkt */
873 rppi = (rndis_per_packet_info *)(rndis_pkt + 1);
874 rppi->size = sizeof(rndis_per_packet_info) +
875 sizeof(ndis_8021q_info);
876 rppi->type = ieee_8021q_info;
877 rppi->per_packet_info_offset = sizeof(rndis_per_packet_info);
879 /* VLAN info immediately follows rppi struct */
880 rppi_vlan_info = (ndis_8021q_info *)(rppi + 1);
881 /* FreeBSD does not support CFI or priority */
882 rppi_vlan_info->u1.s1.vlan_id = pkt->vlan_tci & 0xfff;
886 * Invoke netvsc send. If return status is bad, the caller now
887 * resets the context pointers before retrying.
889 ret = hv_nv_on_send(device, pkt);
895 * RNDIS filter on send completion callback
898 hv_rf_on_send_completion(void *context)
900 rndis_filter_packet *filter_pkt = (rndis_filter_packet *)context;
902 /* Pass it back to the original handler */
903 netvsc_xmit_completion(filter_pkt->completion_context);
907 * RNDIS filter on send request completion callback
910 hv_rf_on_send_request_completion(void *context)
915 * RNDIS filter on send request (halt only) completion callback
918 hv_rf_on_send_request_halt_completion(void *context)
920 rndis_request *request = context;
923 * Notify hv_rf_halt_device() about halt completion.
924 * The halt code must wait for completion before freeing
925 * the transaction resources.
927 request->halt_complete_flag = 1;