3 * Copyright (c) 2011, Microsoft Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
19 * Haiyang Zhang <haiyangz@microsoft.com>
20 * Hank Janssen <hjanssen@microsoft.com>
21 * K. Y. Srinivasan <kys@microsoft.com>
28 #include <linux/list.h>
29 #include <linux/hyperv.h>
30 #include <linux/rndis.h>
33 struct hv_netvsc_packet;
35 /* Represent the xfer page packet which contains 1 or more netvsc packet */
36 struct xferpage_packet {
37 struct list_head list_ent;
40 /* # of netvsc packets this xfer packet contains */
45 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
48 struct hv_netvsc_packet {
49 /* Bookkeeping stuff */
50 struct list_head list_ent;
53 struct hv_device *device;
58 * Valid only for receives when we break a xfer page packet
59 * into multiple netvsc packets
61 struct xferpage_packet *xfer_page_pkt;
65 u64 recv_completion_tid;
66 void *recv_completion_ctx;
67 void (*recv_completion)(void *context);
70 u64 send_completion_tid;
71 void *send_completion_ctx;
72 void (*send_completion)(void *context);
76 /* This points to the memory after page_buf */
79 u32 total_data_buflen;
80 /* Points to the send/receive buffer where the ethernet frame is */
83 struct hv_page_buffer page_buf[0];
86 struct netvsc_device_info {
87 unsigned char mac_adr[ETH_ALEN];
88 bool link_state; /* 0 - link up, 1 - link down */
92 enum rndis_device_state {
93 RNDIS_DEV_UNINITIALIZED = 0,
94 RNDIS_DEV_INITIALIZING,
95 RNDIS_DEV_INITIALIZED,
96 RNDIS_DEV_DATAINITIALIZED,
100 struct netvsc_device *net_dev;
102 enum rndis_device_state state;
106 spinlock_t request_lock;
107 struct list_head req_list;
109 unsigned char hw_mac_adr[ETH_ALEN];
114 int netvsc_device_add(struct hv_device *device, void *additional_info);
115 int netvsc_device_remove(struct hv_device *device);
116 int netvsc_send(struct hv_device *device,
117 struct hv_netvsc_packet *packet);
118 void netvsc_linkstatus_callback(struct hv_device *device_obj,
119 unsigned int status);
120 int netvsc_recv_callback(struct hv_device *device_obj,
121 struct hv_netvsc_packet *packet);
122 int rndis_filter_open(struct hv_device *dev);
123 int rndis_filter_close(struct hv_device *dev);
124 int rndis_filter_device_add(struct hv_device *dev,
125 void *additional_info);
126 void rndis_filter_device_remove(struct hv_device *dev);
127 int rndis_filter_receive(struct hv_device *dev,
128 struct hv_netvsc_packet *pkt);
132 int rndis_filter_send(struct hv_device *dev,
133 struct hv_netvsc_packet *pkt);
135 int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter);
136 int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac);
139 #define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
141 #define NVSP_PROTOCOL_VERSION_1 2
142 #define NVSP_PROTOCOL_VERSION_2 0x30002
145 NVSP_MSG_TYPE_NONE = 0,
148 NVSP_MSG_TYPE_INIT = 1,
149 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
151 NVSP_VERSION_MSG_START = 100,
153 /* Version 1 Messages */
154 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
156 NVSP_MSG1_TYPE_SEND_RECV_BUF,
157 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
158 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
160 NVSP_MSG1_TYPE_SEND_SEND_BUF,
161 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
162 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
164 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
165 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
167 /* Version 2 messages */
168 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
169 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
170 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
172 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
174 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
175 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
177 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
179 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
180 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
182 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
183 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
185 NVSP_MSG2_TYPE_ALLOC_RXBUF,
186 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
188 NVSP_MSG2_TYPE_FREE_RXBUF,
190 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
191 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
193 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
195 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
196 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
203 NVSP_STAT_PROTOCOL_TOO_NEW,
204 NVSP_STAT_PROTOCOL_TOO_OLD,
205 NVSP_STAT_INVALID_RNDIS_PKT,
207 NVSP_STAT_PROTOCOL_UNSUPPORTED,
211 struct nvsp_message_header {
218 * This message is used by the VSC to initialize the channel after the channels
219 * has been opened. This message should never include anything other then
220 * versioning (i.e. this message will be the same for ever).
222 struct nvsp_message_init {
223 u32 min_protocol_ver;
224 u32 max_protocol_ver;
228 * This message is used by the VSP to complete the initialization of the
229 * channel. This message should never include anything other then versioning
230 * (i.e. this message will be the same for ever).
232 struct nvsp_message_init_complete {
233 u32 negotiated_protocol_ver;
234 u32 max_mdl_chain_len;
238 union nvsp_message_init_uber {
239 struct nvsp_message_init init;
240 struct nvsp_message_init_complete init_complete;
243 /* Version 1 Messages */
246 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
247 * can use this information when handling OIDs sent by the VSC.
249 struct nvsp_1_message_send_ndis_version {
255 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
256 * can then use the receive buffer to send data to the VSC.
258 struct nvsp_1_message_send_receive_buffer {
263 struct nvsp_1_receive_buffer_section {
271 * This message is used by the VSP to acknowledge a receive buffer send by the
272 * VSC. This message must be sent by the VSP before the VSP uses the receive
275 struct nvsp_1_message_send_receive_buffer_complete {
280 * The receive buffer is split into two parts, a large suballocation
281 * section and a small suballocation section. These sections are then
282 * suballocated by a certain size.
286 * For example, the following break up of the receive buffer has 6
287 * large suballocations and 10 small suballocations.
291 * | Large Section | | Small Section |
292 * ------------------------------------------------------------
293 * | | | | | | | | | | | | | | | | | |
295 * LargeOffset SmallOffset
298 struct nvsp_1_receive_buffer_section sections[1];
302 * This message is sent by the VSC to revoke the receive buffer. After the VSP
303 * completes this transaction, the vsp should never use the receive buffer
306 struct nvsp_1_message_revoke_receive_buffer {
311 * This message is used by the VSC to send a send buffer to the VSP. The VSC
312 * can then use the send buffer to send data to the VSP.
314 struct nvsp_1_message_send_send_buffer {
320 * This message is used by the VSP to acknowledge a send buffer sent by the
321 * VSC. This message must be sent by the VSP before the VSP uses the sent
324 struct nvsp_1_message_send_send_buffer_complete {
328 * The VSC gets to choose the size of the send buffer and the VSP gets
329 * to choose the sections size of the buffer. This was done to enable
330 * dynamic reconfigurations when the cost of GPA-direct buffers
337 * This message is sent by the VSC to revoke the send buffer. After the VSP
338 * completes this transaction, the vsp should never use the send buffer again.
340 struct nvsp_1_message_revoke_send_buffer {
345 * This message is used by both the VSP and the VSC to send a RNDIS message to
346 * the opposite channel endpoint.
348 struct nvsp_1_message_send_rndis_packet {
350 * This field is specified by RNIDS. They assume there's two different
351 * channels of communication. However, the Network VSP only has one.
352 * Therefore, the channel travels with the RNDIS packet.
357 * This field is used to send part or all of the data through a send
358 * buffer. This values specifies an index into the send buffer. If the
359 * index is 0xFFFFFFFF, then the send buffer is not being used and all
360 * of the data was sent through other VMBus mechanisms.
362 u32 send_buf_section_index;
363 u32 send_buf_section_size;
367 * This message is used by both the VSP and the VSC to complete a RNDIS message
368 * to the opposite channel endpoint. At this point, the initiator of this
369 * message cannot use any resources associated with the original RNDIS packet.
371 struct nvsp_1_message_send_rndis_packet_complete {
375 union nvsp_1_message_uber {
376 struct nvsp_1_message_send_ndis_version send_ndis_ver;
378 struct nvsp_1_message_send_receive_buffer send_recv_buf;
379 struct nvsp_1_message_send_receive_buffer_complete
380 send_recv_buf_complete;
381 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
383 struct nvsp_1_message_send_send_buffer send_send_buf;
384 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
385 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
387 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
388 struct nvsp_1_message_send_rndis_packet_complete
389 send_rndis_pkt_complete;
394 * Network VSP protocol version 2 messages:
396 struct nvsp_2_vsc_capability {
404 u64 correlation_id:1;
409 struct nvsp_2_send_ndis_config {
412 struct nvsp_2_vsc_capability capability;
415 /* Allocate receive buffer */
416 struct nvsp_2_alloc_rxbuf {
417 /* Allocation ID to match the allocation request and response */
420 /* Length of the VM shared memory receive buffer that needs to
426 /* Allocate receive buffer complete */
427 struct nvsp_2_alloc_rxbuf_comp {
428 /* The NDIS_STATUS code for buffer allocation */
433 /* GPADL handle for the allocated receive buffer */
436 /* Receive buffer ID */
440 struct nvsp_2_free_rxbuf {
444 union nvsp_2_message_uber {
445 struct nvsp_2_send_ndis_config send_ndis_config;
446 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
447 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
448 struct nvsp_2_free_rxbuf free_rxbuf;
451 union nvsp_all_messages {
452 union nvsp_message_init_uber init_msg;
453 union nvsp_1_message_uber v1_msg;
454 union nvsp_2_message_uber v2_msg;
458 struct nvsp_message {
459 struct nvsp_message_header hdr;
460 union nvsp_all_messages msg;
464 #define NETVSC_MTU 65536
466 #define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*2) /* 2MB */
468 #define NETVSC_RECEIVE_BUFFER_ID 0xcafe
470 /* Preallocated receive packets */
471 #define NETVSC_RECEIVE_PACKETLIST_COUNT 256
473 #define NETVSC_PACKET_SIZE 2048
475 /* Per netvsc channel-specific */
476 struct netvsc_device {
477 struct hv_device *dev;
481 atomic_t num_outstanding_sends;
482 wait_queue_head_t wait_drain;
486 * List of free preallocated hv_netvsc_packet to represent receive
489 struct list_head recv_pkt_list;
490 spinlock_t recv_pkt_list_lock;
492 /* Receive buffer allocated by us but manages by NetVSP */
495 u32 recv_buf_gpadl_handle;
496 u32 recv_section_cnt;
497 struct nvsp_1_receive_buffer_section *recv_section;
499 /* Used for NetVSP initialization protocol */
500 struct completion channel_init_wait;
501 struct nvsp_message channel_init_pkt;
503 struct nvsp_message revoke_packet;
504 /* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
506 struct net_device *ndev;
508 /* Holds rndis device info */
512 /* NdisInitialize message */
513 struct rndis_initialize_request {
520 /* Response to NdisInitialize */
521 struct rndis_initialize_complete {
530 u32 pkt_alignment_factor;
535 /* Call manager devices only: Information about an address family */
536 /* supported by the device is appended to the response to NdisInitialize. */
537 struct rndis_co_address_family {
543 /* NdisHalt message */
544 struct rndis_halt_request {
548 /* NdisQueryRequest message */
549 struct rndis_query_request {
557 /* Response to NdisQueryRequest */
558 struct rndis_query_complete {
565 /* NdisSetRequest message */
566 struct rndis_set_request {
574 /* Response to NdisSetRequest */
575 struct rndis_set_complete {
580 /* NdisReset message */
581 struct rndis_reset_request {
585 /* Response to NdisReset */
586 struct rndis_reset_complete {
588 u32 addressing_reset;
591 /* NdisMIndicateStatus message */
592 struct rndis_indicate_status {
595 u32 status_buf_offset;
598 /* Diagnostic information passed as the status buffer in */
599 /* struct rndis_indicate_status messages signifying error conditions. */
600 struct rndis_diagnostic_info {
605 /* NdisKeepAlive message */
606 struct rndis_keepalive_request {
610 /* Response to NdisKeepAlive */
611 struct rndis_keepalive_complete {
617 * Data message. All Offset fields contain byte offsets from the beginning of
618 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
619 * to 0 for connectionless data, otherwise it contains the VC handle.
621 struct rndis_packet {
626 u32 num_oob_data_elements;
627 u32 per_pkt_info_offset;
628 u32 per_pkt_info_len;
633 /* Optional Out of Band data associated with a Data message. */
637 u32 class_info_offset;
640 /* Packet extension field contents associated with a Data message. */
641 struct rndis_per_packet_info {
647 enum ndis_per_pkt_info_type {
648 TCPIP_CHKSUM_PKTINFO,
650 TCP_LARGESEND_PKTINFO,
651 CLASSIFICATION_HANDLE_PKTINFO,
657 ORIGINAL_NET_BUFLIST,
663 struct ndis_pkt_8021q_info {
666 u32 pri:3; /* User Priority */
667 u32 cfi:1; /* Canonical Format ID */
668 u32 vlanid:12; /* VLAN ID */
675 #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
676 sizeof(struct ndis_pkt_8021q_info))
678 /* Format of Information buffer passed in a SetRequest for the OID */
679 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
680 struct rndis_config_parameter_info {
681 u32 parameter_name_offset;
682 u32 parameter_name_length;
684 u32 parameter_value_offset;
685 u32 parameter_value_length;
688 /* Values for ParameterType in struct rndis_config_parameter_info */
689 #define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
690 #define RNDIS_CONFIG_PARAM_TYPE_STRING 2
692 /* CONDIS Miniport messages for connection oriented devices */
693 /* that do not implement a call manager. */
695 /* CoNdisMiniportCreateVc message */
696 struct rcondis_mp_create_vc {
701 /* Response to CoNdisMiniportCreateVc */
702 struct rcondis_mp_create_vc_complete {
708 /* CoNdisMiniportDeleteVc message */
709 struct rcondis_mp_delete_vc {
714 /* Response to CoNdisMiniportDeleteVc */
715 struct rcondis_mp_delete_vc_complete {
720 /* CoNdisMiniportQueryRequest message */
721 struct rcondis_mp_query_request {
730 /* CoNdisMiniportSetRequest message */
731 struct rcondis_mp_set_request {
740 /* CoNdisIndicateStatus message */
741 struct rcondis_indicate_status {
745 u32 status_buf_offset;
748 /* CONDIS Call/VC parameters */
749 struct rcondis_specific_parameters {
751 u32 parameter_length;
752 u32 parameter_lffset;
755 struct rcondis_media_parameters {
759 struct rcondis_specific_parameters media_specific;
762 struct rndis_flowspec {
764 u32 token_bucket_size;
770 u32 minimum_policed_size;
773 struct rcondis_call_manager_parameters {
774 struct rndis_flowspec transmit;
775 struct rndis_flowspec receive;
776 struct rcondis_specific_parameters call_mgr_specific;
779 /* CoNdisMiniportActivateVc message */
780 struct rcondis_mp_activate_vc_request {
784 u32 media_params_offset;
785 u32 media_params_length;
786 u32 call_mgr_params_offset;
787 u32 call_mgr_params_length;
790 /* Response to CoNdisMiniportActivateVc */
791 struct rcondis_mp_activate_vc_complete {
796 /* CoNdisMiniportDeactivateVc message */
797 struct rcondis_mp_deactivate_vc_request {
803 /* Response to CoNdisMiniportDeactivateVc */
804 struct rcondis_mp_deactivate_vc_complete {
810 /* union with all of the RNDIS messages */
811 union rndis_message_container {
812 struct rndis_packet pkt;
813 struct rndis_initialize_request init_req;
814 struct rndis_halt_request halt_req;
815 struct rndis_query_request query_req;
816 struct rndis_set_request set_req;
817 struct rndis_reset_request reset_req;
818 struct rndis_keepalive_request keep_alive_req;
819 struct rndis_indicate_status indicate_status;
820 struct rndis_initialize_complete init_complete;
821 struct rndis_query_complete query_complete;
822 struct rndis_set_complete set_complete;
823 struct rndis_reset_complete reset_complete;
824 struct rndis_keepalive_complete keep_alive_complete;
825 struct rcondis_mp_create_vc co_miniport_create_vc;
826 struct rcondis_mp_delete_vc co_miniport_delete_vc;
827 struct rcondis_indicate_status co_indicate_status;
828 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
829 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
830 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
831 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
832 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
833 struct rcondis_mp_deactivate_vc_complete
834 co_miniport_deactivate_vc_complete;
837 /* Remote NDIS message format */
838 struct rndis_message {
841 /* Total length of this message, from the beginning */
842 /* of the sruct rndis_message, in bytes. */
846 union rndis_message_container msg;
850 struct rndis_filter_packet {
851 void *completion_ctx;
852 void (*completion)(void *context);
853 struct rndis_message msg;
858 /* get the size of an RNDIS message. Pass in the message type, */
859 /* struct rndis_set_request, struct rndis_packet for example */
860 #define RNDIS_MESSAGE_SIZE(msg) \
861 (sizeof(msg) + (sizeof(struct rndis_message) - \
862 sizeof(union rndis_message_container)))
864 /* get pointer to info buffer with message pointer */
865 #define MESSAGE_TO_INFO_BUFFER(msg) \
866 (((unsigned char *)(msg)) + msg->info_buf_offset)
868 /* get pointer to status buffer with message pointer */
869 #define MESSAGE_TO_STATUS_BUFFER(msg) \
870 (((unsigned char *)(msg)) + msg->status_buf_offset)
872 /* get pointer to OOBD buffer with message pointer */
873 #define MESSAGE_TO_OOBD_BUFFER(msg) \
874 (((unsigned char *)(msg)) + msg->oob_data_offset)
876 /* get pointer to data buffer with message pointer */
877 #define MESSAGE_TO_DATA_BUFFER(msg) \
878 (((unsigned char *)(msg)) + msg->per_pkt_info_offset)
880 /* get pointer to contained message from NDIS_MESSAGE pointer */
881 #define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg) \
882 ((void *) &rndis_msg->msg)
884 /* get pointer to contained message from NDIS_MESSAGE pointer */
885 #define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg) \
889 #define __struct_bcount(x)
893 #define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
894 sizeof(union rndis_message_container))
896 #define NDIS_PACKET_TYPE_DIRECTED 0x00000001
897 #define NDIS_PACKET_TYPE_MULTICAST 0x00000002
898 #define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
899 #define NDIS_PACKET_TYPE_BROADCAST 0x00000008
900 #define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
901 #define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
902 #define NDIS_PACKET_TYPE_SMT 0x00000040
903 #define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
904 #define NDIS_PACKET_TYPE_GROUP 0x00000100
905 #define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
906 #define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
907 #define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
911 #endif /* _HYPERV_NET_H */