1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright (c) 2011, Microsoft Corporation.
15 #include <linux/list.h>
16 #include <linux/hyperv.h>
17 #include <linux/rndis.h>
18 #include <linux/jhash.h>
21 #define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */
22 #define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */
24 #define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
25 #define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
26 #define NDIS_OBJECT_TYPE_OFFLOAD 0xa7
28 #define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
29 #define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
31 struct ndis_obj_header {
37 /* ndis_recv_scale_cap/cap_flag */
38 #define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
39 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR 0x02000000
40 #define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC 0x04000000
41 #define NDIS_RSS_CAPS_USING_MSI_X 0x08000000
42 #define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS 0x10000000
43 #define NDIS_RSS_CAPS_SUPPORTS_MSI_X 0x20000000
44 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4 0x00000100
45 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6 0x00000200
46 #define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX 0x00000400
48 struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
49 struct ndis_obj_header hdr;
53 u16 num_indirect_tabent;
57 /* ndis_recv_scale_param flags */
58 #define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED 0x0001
59 #define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED 0x0002
60 #define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED 0x0004
61 #define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED 0x0008
62 #define NDIS_RSS_PARAM_FLAG_DISABLE_RSS 0x0010
65 #define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
66 #define NDIS_HASH_IPV4 0x00000100
67 #define NDIS_HASH_TCP_IPV4 0x00000200
68 #define NDIS_HASH_IPV6 0x00000400
69 #define NDIS_HASH_IPV6_EX 0x00000800
70 #define NDIS_HASH_TCP_IPV6 0x00001000
71 #define NDIS_HASH_TCP_IPV6_EX 0x00002000
73 #define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
74 #define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 40
77 #define ITAB_NUM_MAX 256
79 struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
80 struct ndis_obj_header hdr;
82 /* Qualifies the rest of the information */
85 /* The base CPU number to do receive processing. not used */
88 /* This describes the hash function and type being enabled */
91 /* The size of indirection table array */
94 /* The offset of the indirection table from the beginning of this
97 u32 indirect_taboffset;
99 /* The size of the hash secret key */
102 /* The offset of the secret key from the beginning of this structure */
105 u32 processor_masks_offset;
106 u32 num_processor_masks;
107 u32 processor_masks_entry_size;
110 struct ndis_tcp_ip_checksum_info {
117 u32 ip_header_checksum:1;
119 u32 tcp_header_offset:10;
122 u32 tcp_checksum_failed:1;
123 u32 udp_checksum_failed:1;
124 u32 ip_checksum_failed:1;
125 u32 tcp_checksum_succeeded:1;
126 u32 udp_checksum_succeeded:1;
127 u32 ip_checksum_succeeded:1;
129 u32 tcp_checksum_value_invalid:1;
130 u32 ip_checksum_value_invalid:1;
136 struct ndis_pkt_8021q_info {
139 u32 pri:3; /* User Priority */
140 u32 cfi:1; /* Canonical Format ID */
141 u32 vlanid:12; /* VLAN ID */
149 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
152 * The size of this structure is less than 48 bytes and we can now
153 * place this structure in the skb->cb field.
155 struct hv_netvsc_packet {
156 /* Bookkeeping stuff */
157 u8 cp_partial; /* partial copy into send buffer */
159 u8 rmsg_size; /* RNDIS header and PPI size */
160 u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
168 u32 total_data_buflen;
169 struct hv_dma_range *dma_range;
172 #define NETVSC_HASH_KEYLEN 40
174 struct netvsc_device_info {
175 unsigned char mac_adr[ETH_ALEN];
179 u32 send_section_size;
180 u32 recv_section_size;
182 struct bpf_prog *bprog;
184 u8 rss_key[NETVSC_HASH_KEYLEN];
187 enum rndis_device_state {
188 RNDIS_DEV_UNINITIALIZED = 0,
189 RNDIS_DEV_INITIALIZING,
190 RNDIS_DEV_INITIALIZED,
191 RNDIS_DEV_DATAINITIALIZED,
194 struct rndis_device {
195 struct net_device *ndev;
197 enum rndis_device_state state;
201 spinlock_t request_lock;
202 struct list_head req_list;
204 struct work_struct mcast_work;
207 bool link_state; /* 0 - link up, 1 - link down */
209 u8 hw_mac_adr[ETH_ALEN];
210 u8 rss_key[NETVSC_HASH_KEYLEN];
215 struct rndis_message;
216 struct ndis_offload_params;
217 struct netvsc_device;
218 struct netvsc_channel;
219 struct net_device_context;
221 extern u32 netvsc_ring_bytes;
223 struct netvsc_device *netvsc_device_add(struct hv_device *device,
224 const struct netvsc_device_info *info);
225 int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
226 void netvsc_device_remove(struct hv_device *device);
227 int netvsc_send(struct net_device *net,
228 struct hv_netvsc_packet *packet,
229 struct rndis_message *rndis_msg,
230 struct hv_page_buffer *page_buffer,
233 void netvsc_linkstatus_callback(struct net_device *net,
234 struct rndis_message *resp,
235 void *data, u32 data_buflen);
236 int netvsc_recv_callback(struct net_device *net,
237 struct netvsc_device *nvdev,
238 struct netvsc_channel *nvchan);
239 void netvsc_channel_cb(void *context);
240 int netvsc_poll(struct napi_struct *napi, int budget);
242 void netvsc_xdp_xmit(struct sk_buff *skb, struct net_device *ndev);
243 u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
244 struct xdp_buff *xdp);
245 unsigned int netvsc_xdp_fraglen(unsigned int len);
246 struct bpf_prog *netvsc_xdp_get(struct netvsc_device *nvdev);
247 int netvsc_xdp_set(struct net_device *dev, struct bpf_prog *prog,
248 struct netlink_ext_ack *extack,
249 struct netvsc_device *nvdev);
250 int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog);
251 int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf);
252 int netvsc_ndoxdp_xmit(struct net_device *ndev, int n,
253 struct xdp_frame **frames, u32 flags);
255 int rndis_set_subchannel(struct net_device *ndev,
256 struct netvsc_device *nvdev,
257 struct netvsc_device_info *dev_info);
258 int rndis_filter_open(struct netvsc_device *nvdev);
259 int rndis_filter_close(struct netvsc_device *nvdev);
260 struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
261 struct netvsc_device_info *info);
262 void rndis_filter_update(struct netvsc_device *nvdev);
263 void rndis_filter_device_remove(struct hv_device *dev,
264 struct netvsc_device *nvdev);
265 int rndis_filter_set_rss_param(struct rndis_device *rdev,
267 int rndis_filter_set_offload_params(struct net_device *ndev,
268 struct netvsc_device *nvdev,
269 struct ndis_offload_params *req_offloads);
270 int rndis_filter_receive(struct net_device *ndev,
271 struct netvsc_device *net_dev,
272 struct netvsc_channel *nvchan,
273 void *data, u32 buflen);
275 int rndis_filter_set_device_mac(struct netvsc_device *ndev,
278 int netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
280 #define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
282 #define NVSP_PROTOCOL_VERSION_1 2
283 #define NVSP_PROTOCOL_VERSION_2 0x30002
284 #define NVSP_PROTOCOL_VERSION_4 0x40000
285 #define NVSP_PROTOCOL_VERSION_5 0x50000
286 #define NVSP_PROTOCOL_VERSION_6 0x60000
287 #define NVSP_PROTOCOL_VERSION_61 0x60001
290 NVSP_MSG_TYPE_NONE = 0,
293 NVSP_MSG_TYPE_INIT = 1,
294 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
296 NVSP_VERSION_MSG_START = 100,
298 /* Version 1 Messages */
299 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
301 NVSP_MSG1_TYPE_SEND_RECV_BUF,
302 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
303 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
305 NVSP_MSG1_TYPE_SEND_SEND_BUF,
306 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
307 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
309 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
310 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
312 /* Version 2 messages */
313 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
314 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
315 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
317 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
319 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
320 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
322 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
324 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
325 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
327 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
328 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
330 NVSP_MSG2_TYPE_ALLOC_RXBUF,
331 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
333 NVSP_MSG2_TYPE_FREE_RXBUF,
335 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
336 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
338 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
340 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
341 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
343 NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
345 /* Version 4 messages */
346 NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
347 NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
348 NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
350 NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
352 /* Version 5 messages */
353 NVSP_MSG5_TYPE_OID_QUERY_EX,
354 NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
355 NVSP_MSG5_TYPE_SUBCHANNEL,
356 NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
358 NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
360 /* Version 6 messages */
361 NVSP_MSG6_TYPE_PD_API,
362 NVSP_MSG6_TYPE_PD_POST_BATCH,
364 NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
371 NVSP_STAT_PROTOCOL_TOO_NEW,
372 NVSP_STAT_PROTOCOL_TOO_OLD,
373 NVSP_STAT_INVALID_RNDIS_PKT,
375 NVSP_STAT_PROTOCOL_UNSUPPORTED,
379 struct nvsp_message_header {
386 * This message is used by the VSC to initialize the channel after the channels
387 * has been opened. This message should never include anything other then
388 * versioning (i.e. this message will be the same for ever).
390 struct nvsp_message_init {
391 u32 min_protocol_ver;
392 u32 max_protocol_ver;
396 * This message is used by the VSP to complete the initialization of the
397 * channel. This message should never include anything other then versioning
398 * (i.e. this message will be the same for ever).
400 struct nvsp_message_init_complete {
401 u32 negotiated_protocol_ver;
402 u32 max_mdl_chain_len;
406 union nvsp_message_init_uber {
407 struct nvsp_message_init init;
408 struct nvsp_message_init_complete init_complete;
411 /* Version 1 Messages */
414 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
415 * can use this information when handling OIDs sent by the VSC.
417 struct nvsp_1_message_send_ndis_version {
423 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
424 * can then use the receive buffer to send data to the VSC.
426 struct nvsp_1_message_send_receive_buffer {
431 struct nvsp_1_receive_buffer_section {
439 * This message is used by the VSP to acknowledge a receive buffer send by the
440 * VSC. This message must be sent by the VSP before the VSP uses the receive
443 struct nvsp_1_message_send_receive_buffer_complete {
448 * The receive buffer is split into two parts, a large suballocation
449 * section and a small suballocation section. These sections are then
450 * suballocated by a certain size.
454 * For example, the following break up of the receive buffer has 6
455 * large suballocations and 10 small suballocations.
459 * | Large Section | | Small Section |
460 * ------------------------------------------------------------
461 * | | | | | | | | | | | | | | | | | |
463 * LargeOffset SmallOffset
466 struct nvsp_1_receive_buffer_section sections[1];
470 * This message is sent by the VSC to revoke the receive buffer. After the VSP
471 * completes this transaction, the vsp should never use the receive buffer
474 struct nvsp_1_message_revoke_receive_buffer {
479 * This message is used by the VSC to send a send buffer to the VSP. The VSC
480 * can then use the send buffer to send data to the VSP.
482 struct nvsp_1_message_send_send_buffer {
488 * This message is used by the VSP to acknowledge a send buffer sent by the
489 * VSC. This message must be sent by the VSP before the VSP uses the sent
492 struct nvsp_1_message_send_send_buffer_complete {
496 * The VSC gets to choose the size of the send buffer and the VSP gets
497 * to choose the sections size of the buffer. This was done to enable
498 * dynamic reconfigurations when the cost of GPA-direct buffers
505 * This message is sent by the VSC to revoke the send buffer. After the VSP
506 * completes this transaction, the vsp should never use the send buffer again.
508 struct nvsp_1_message_revoke_send_buffer {
513 * This message is used by both the VSP and the VSC to send a RNDIS message to
514 * the opposite channel endpoint.
516 struct nvsp_1_message_send_rndis_packet {
518 * This field is specified by RNDIS. They assume there's two different
519 * channels of communication. However, the Network VSP only has one.
520 * Therefore, the channel travels with the RNDIS packet.
525 * This field is used to send part or all of the data through a send
526 * buffer. This values specifies an index into the send buffer. If the
527 * index is 0xFFFFFFFF, then the send buffer is not being used and all
528 * of the data was sent through other VMBus mechanisms.
530 u32 send_buf_section_index;
531 u32 send_buf_section_size;
535 * This message is used by both the VSP and the VSC to complete a RNDIS message
536 * to the opposite channel endpoint. At this point, the initiator of this
537 * message cannot use any resources associated with the original RNDIS packet.
539 struct nvsp_1_message_send_rndis_packet_complete {
543 union nvsp_1_message_uber {
544 struct nvsp_1_message_send_ndis_version send_ndis_ver;
546 struct nvsp_1_message_send_receive_buffer send_recv_buf;
547 struct nvsp_1_message_send_receive_buffer_complete
548 send_recv_buf_complete;
549 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
551 struct nvsp_1_message_send_send_buffer send_send_buf;
552 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
553 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
555 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
556 struct nvsp_1_message_send_rndis_packet_complete
557 send_rndis_pkt_complete;
562 * Network VSP protocol version 2 messages:
564 struct nvsp_2_vsc_capability {
572 u64 correlation_id:1;
580 struct nvsp_2_send_ndis_config {
583 struct nvsp_2_vsc_capability capability;
586 /* Allocate receive buffer */
587 struct nvsp_2_alloc_rxbuf {
588 /* Allocation ID to match the allocation request and response */
591 /* Length of the VM shared memory receive buffer that needs to
597 /* Allocate receive buffer complete */
598 struct nvsp_2_alloc_rxbuf_comp {
599 /* The NDIS_STATUS code for buffer allocation */
604 /* GPADL handle for the allocated receive buffer */
607 /* Receive buffer ID */
611 struct nvsp_2_free_rxbuf {
615 union nvsp_2_message_uber {
616 struct nvsp_2_send_ndis_config send_ndis_config;
617 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
618 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
619 struct nvsp_2_free_rxbuf free_rxbuf;
622 struct nvsp_4_send_vf_association {
623 /* 1: allocated, serial number is valid. 0: not allocated */
626 /* Serial number of the VF to team with */
630 enum nvsp_vm_datapath {
631 NVSP_DATAPATH_SYNTHETIC = 0,
636 struct nvsp_4_sw_datapath {
637 u32 active_datapath; /* active data path in VM */
640 union nvsp_4_message_uber {
641 struct nvsp_4_send_vf_association vf_assoc;
642 struct nvsp_4_sw_datapath active_dp;
645 enum nvsp_subchannel_operation {
646 NVSP_SUBCHANNEL_NONE = 0,
647 NVSP_SUBCHANNEL_ALLOCATE,
651 struct nvsp_5_subchannel_request {
656 struct nvsp_5_subchannel_complete {
658 u32 num_subchannels; /* Actual number of subchannels allocated */
661 struct nvsp_5_send_indirect_table {
662 /* The number of entries in the send indirection table */
665 /* The offset of the send indirection table from the beginning of
666 * struct nvsp_message.
667 * The send indirection table tells which channel to put the send
668 * traffic on. Each entry is a channel number.
673 union nvsp_5_message_uber {
674 struct nvsp_5_subchannel_request subchn_req;
675 struct nvsp_5_subchannel_complete subchn_comp;
676 struct nvsp_5_send_indirect_table send_table;
679 enum nvsp_6_pd_api_op {
680 PD_API_OP_CONFIG = 1,
681 PD_API_OP_SW_DATAPATH, /* Switch Datapath */
682 PD_API_OP_OPEN_PROVIDER,
683 PD_API_OP_CLOSE_PROVIDER,
684 PD_API_OP_CREATE_QUEUE,
685 PD_API_OP_FLUSH_QUEUE,
686 PD_API_OP_FREE_QUEUE,
687 PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
688 PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
692 struct grp_affinity {
698 struct nvsp_6_pd_api_req {
702 /* MMIO information is sent from the VM to VSP */
704 u64 mmio_pa; /* MMIO Physical Address */
707 /* Number of PD queues a VM can support */
711 /* Switch Datapath */
713 /* Host Datapath Is PacketDirect */
716 /* Guest PacketDirect Is Enabled */
722 u32 prov_id; /* Provider id */
739 struct grp_affinity affy;
754 /* Allocate Common Buffer */
757 u32 pf_node; /* Preferred Node */
761 /* Free Common Buffer */
764 u64 pa; /* Physical Address */
765 u32 pf_node; /* Preferred Node */
772 struct nvsp_6_pd_api_comp {
778 /* actual number of PD queues allocated to the VM */
781 /* Num Receive Rss PD Queues */
784 u8 is_supported; /* Is supported by VSP */
785 u8 is_enabled; /* Is enabled by VSP */
799 struct grp_affinity affy;
802 /* Allocate Common Buffer */
804 u64 pa; /* Physical Address */
806 u32 pf_node; /* Preferred Node */
813 struct nvsp_6_pd_buf {
820 struct nvsp_6_pd_batch_msg {
821 struct nvsp_message_header hdr;
826 struct nvsp_6_pd_buf pd_buf[0];
829 union nvsp_6_message_uber {
830 struct nvsp_6_pd_api_req pd_req;
831 struct nvsp_6_pd_api_comp pd_comp;
834 union nvsp_all_messages {
835 union nvsp_message_init_uber init_msg;
836 union nvsp_1_message_uber v1_msg;
837 union nvsp_2_message_uber v2_msg;
838 union nvsp_4_message_uber v4_msg;
839 union nvsp_5_message_uber v5_msg;
840 union nvsp_6_message_uber v6_msg;
844 struct nvsp_message {
845 struct nvsp_message_header hdr;
846 union nvsp_all_messages msg;
850 #define NETVSC_MTU 65535
851 #define NETVSC_MTU_MIN ETH_MIN_MTU
853 /* Max buffer sizes allowed by a host */
854 #define NETVSC_RECEIVE_BUFFER_SIZE (1024 * 1024 * 31) /* 31MB */
855 #define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024 * 1024 * 15) /* 15MB */
856 #define NETVSC_RECEIVE_BUFFER_DEFAULT (1024 * 1024 * 16)
858 #define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
859 #define NETVSC_SEND_BUFFER_DEFAULT (1024 * 1024)
861 #define NETVSC_INVALID_INDEX -1
863 #define NETVSC_SEND_SECTION_SIZE 6144
864 #define NETVSC_RECV_SECTION_SIZE 1728
866 /* Default size of TX buf: 1MB, RX buf: 16MB */
867 #define NETVSC_MIN_TX_SECTIONS 10
868 #define NETVSC_DEFAULT_TX (NETVSC_SEND_BUFFER_DEFAULT \
869 / NETVSC_SEND_SECTION_SIZE)
870 #define NETVSC_MIN_RX_SECTIONS 10
871 #define NETVSC_DEFAULT_RX (NETVSC_RECEIVE_BUFFER_DEFAULT \
872 / NETVSC_RECV_SECTION_SIZE)
874 #define NETVSC_RECEIVE_BUFFER_ID 0xcafe
875 #define NETVSC_SEND_BUFFER_ID 0
877 #define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
878 NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
879 NETIF_F_TSO6 | NETIF_F_LRO | \
880 NETIF_F_SG | NETIF_F_RXHASH)
882 #define VRSS_SEND_TAB_SIZE 16 /* must be power of 2 */
883 #define VRSS_CHANNEL_MAX 64
884 #define VRSS_CHANNEL_DEFAULT 8
886 #define RNDIS_MAX_PKT_DEFAULT 8
887 #define RNDIS_PKT_ALIGN_DEFAULT 8
889 #define NETVSC_XDP_HDRM 256
891 #define NETVSC_MIN_OUT_MSG_SIZE (sizeof(struct vmpacket_descriptor) + \
892 sizeof(struct nvsp_message))
893 #define NETVSC_MIN_IN_MSG_SIZE sizeof(struct vmpacket_descriptor)
895 /* Estimated requestor size:
896 * out_ring_size/min_out_msg_size + in_ring_size/min_in_msg_size
898 static inline u32 netvsc_rqstor_size(unsigned long ringbytes)
900 return ringbytes / NETVSC_MIN_OUT_MSG_SIZE +
901 ringbytes / NETVSC_MIN_IN_MSG_SIZE;
904 /* XFER PAGE packets can specify a maximum of 375 ranges for NDIS >= 6.0
905 * and a maximum of 64 ranges for NDIS < 6.0 with no RSC; with RSC, this
906 * limit is raised to 562 (= NVSP_RSC_MAX).
908 #define NETVSC_MAX_XFER_PAGE_RANGES NVSP_RSC_MAX
909 #define NETVSC_XFER_HEADER_SIZE(rng_cnt) \
910 (offsetof(struct vmtransfer_page_packet_header, ranges) + \
911 (rng_cnt) * sizeof(struct vmtransfer_page_range))
912 #define NETVSC_MAX_PKT_SIZE (NETVSC_XFER_HEADER_SIZE(NETVSC_MAX_XFER_PAGE_RANGES) + \
913 sizeof(struct nvsp_message) + (sizeof(u32) * VRSS_SEND_TAB_SIZE))
915 struct multi_send_data {
916 struct sk_buff *skb; /* skb containing the pkt */
917 struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
918 u32 count; /* counter of batched packets */
921 struct recv_comp_data {
922 u64 tid; /* transaction id */
926 struct multi_recv_comp {
927 struct recv_comp_data *slots;
928 u32 first; /* first data entry */
929 u32 next; /* next entry for writing */
932 #define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */
935 struct ndis_pkt_8021q_info vlan;
936 struct ndis_tcp_ip_checksum_info csum_info;
938 u8 ppi_flags; /* valid/present bits for the above PPIs */
939 u8 is_last; /* last RNDIS msg in a vmtransfer_page */
940 u32 cnt; /* #fragments in an RSC packet */
941 u32 pktlen; /* Full packet length */
942 void *data[NVSP_RSC_MAX];
943 u32 len[NVSP_RSC_MAX];
946 #define NVSC_RSC_VLAN BIT(0) /* valid/present bit for 'vlan' */
947 #define NVSC_RSC_CSUM_INFO BIT(1) /* valid/present bit for 'csum_info' */
948 #define NVSC_RSC_HASH_INFO BIT(2) /* valid/present bit for 'hash_info' */
950 struct netvsc_stats_tx {
954 struct u64_stats_sync syncp;
957 struct netvsc_stats_rx {
965 struct u64_stats_sync syncp;
968 struct netvsc_ethtool_stats {
969 unsigned long tx_scattered;
970 unsigned long tx_no_memory;
971 unsigned long tx_no_space;
972 unsigned long tx_too_big;
973 unsigned long tx_busy;
974 unsigned long tx_send_full;
975 unsigned long rx_comp_busy;
976 unsigned long rx_no_memory;
977 unsigned long stop_queue;
978 unsigned long wake_queue;
979 unsigned long vlan_error;
982 struct netvsc_ethtool_pcpu_stats {
993 struct netvsc_vf_pcpu_stats {
998 struct u64_stats_sync syncp;
1002 struct netvsc_reconfig {
1003 struct list_head list;
1007 /* L4 hash bits for different protocols */
1008 #define HV_TCP4_L4HASH 1
1009 #define HV_TCP6_L4HASH 2
1010 #define HV_UDP4_L4HASH 4
1011 #define HV_UDP6_L4HASH 8
1012 #define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
1015 /* The context of the netvsc device */
1016 struct net_device_context {
1017 /* point back to our device context */
1018 struct hv_device *device_ctx;
1020 struct netvsc_device __rcu *nvdev;
1021 /* list of netvsc net_devices */
1022 struct list_head list;
1023 /* reconfigure work */
1024 struct delayed_work dwork;
1025 /* last reconfig time */
1026 unsigned long last_reconfig;
1027 /* reconfig events */
1028 struct list_head reconfig_events;
1029 /* list protection */
1032 u32 msg_enable; /* debug level */
1034 u32 tx_checksum_mask;
1036 u32 tx_table[VRSS_SEND_TAB_SIZE];
1042 /* Ethtool settings */
1045 u32 l4_hash; /* L4 hash settings */
1046 struct netvsc_ethtool_stats eth_stats;
1048 /* State to manage the associated VF interface. */
1049 struct net_device __rcu *vf_netdev;
1050 struct netvsc_vf_pcpu_stats __percpu *vf_stats;
1051 struct delayed_work vf_takeover;
1053 /* 1: allocated, serial number is valid. 0: not allocated */
1055 /* Serial number of the VF to team with */
1057 /* completion variable to confirm vf association */
1058 struct completion vf_add;
1059 /* Is the current data path through the VF NIC? */
1060 bool data_path_is_vf;
1062 /* Used to temporarily save the config info across hibernation */
1063 struct netvsc_device_info *saved_netvsc_dev_info;
1066 /* Azure hosts don't support non-TCP port numbers in hashing for fragmented
1067 * packets. We can use ethtool to change UDP hash level when necessary.
1069 static inline u32 netvsc_get_hash(struct sk_buff *skb,
1070 const struct net_device_context *ndc)
1072 struct flow_keys flow;
1073 u32 hash, pkt_proto = 0;
1074 static u32 hashrnd __read_mostly;
1076 net_get_random_once(&hashrnd, sizeof(hashrnd));
1078 if (!skb_flow_dissect_flow_keys(skb, &flow, 0))
1081 switch (flow.basic.ip_proto) {
1083 if (flow.basic.n_proto == htons(ETH_P_IP))
1084 pkt_proto = HV_TCP4_L4HASH;
1085 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1086 pkt_proto = HV_TCP6_L4HASH;
1091 if (flow.basic.n_proto == htons(ETH_P_IP))
1092 pkt_proto = HV_UDP4_L4HASH;
1093 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1094 pkt_proto = HV_UDP6_L4HASH;
1099 if (pkt_proto & ndc->l4_hash) {
1100 return skb_get_hash(skb);
1102 if (flow.basic.n_proto == htons(ETH_P_IP))
1103 hash = jhash2((u32 *)&flow.addrs.v4addrs, 2, hashrnd);
1104 else if (flow.basic.n_proto == htons(ETH_P_IPV6))
1105 hash = jhash2((u32 *)&flow.addrs.v6addrs, 8, hashrnd);
1109 __skb_set_sw_hash(skb, hash, false);
1115 /* Per channel data */
1116 struct netvsc_channel {
1117 struct vmbus_channel *channel;
1118 struct netvsc_device *net_device;
1119 void *recv_buf; /* buffer to copy packets out from the receive buffer */
1120 const struct vmpacket_descriptor *desc;
1121 struct napi_struct napi;
1122 struct multi_send_data msd;
1123 struct multi_recv_comp mrc;
1124 atomic_t queue_sends;
1125 struct nvsc_rsc rsc;
1127 struct bpf_prog __rcu *bpf_prog;
1128 struct xdp_rxq_info xdp_rxq;
1131 struct netvsc_stats_tx tx_stats;
1132 struct netvsc_stats_rx rx_stats;
1135 /* Per netvsc device */
1136 struct netvsc_device {
1139 wait_queue_head_t wait_drain;
1141 bool tx_disable; /* if true, do not wake up queue again */
1143 /* Receive buffer allocated by us but manages by NetVSP */
1145 u32 recv_buf_size; /* allocated bytes */
1146 struct vmbus_gpadl recv_buf_gpadl_handle;
1147 u32 recv_section_cnt;
1148 u32 recv_section_size;
1149 u32 recv_completion_cnt;
1151 /* Send buffer allocated by us */
1154 struct vmbus_gpadl send_buf_gpadl_handle;
1155 u32 send_section_cnt;
1156 u32 send_section_size;
1157 unsigned long *send_section_map;
1159 /* Used for NetVSP initialization protocol */
1160 struct completion channel_init_wait;
1161 struct nvsp_message channel_init_pkt;
1163 struct nvsp_message revoke_packet;
1169 struct work_struct subchan_work;
1170 wait_queue_head_t subchan_open;
1172 struct rndis_device *extension;
1174 u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
1175 u32 pkt_align; /* alignment bytes, e.g. 8 */
1177 struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];
1179 struct rcu_head rcu;
1182 /* NdisInitialize message */
1183 struct rndis_initialize_request {
1190 /* Response to NdisInitialize */
1191 struct rndis_initialize_complete {
1198 u32 max_pkt_per_msg;
1200 u32 pkt_alignment_factor;
1205 /* Call manager devices only: Information about an address family */
1206 /* supported by the device is appended to the response to NdisInitialize. */
1207 struct rndis_co_address_family {
1213 /* NdisHalt message */
1214 struct rndis_halt_request {
1218 /* NdisQueryRequest message */
1219 struct rndis_query_request {
1223 u32 info_buf_offset;
1227 /* Response to NdisQueryRequest */
1228 struct rndis_query_complete {
1232 u32 info_buf_offset;
1235 /* NdisSetRequest message */
1236 struct rndis_set_request {
1240 u32 info_buf_offset;
1245 /* Response to NdisSetRequest */
1246 struct rndis_set_complete {
1251 /* NdisReset message */
1252 struct rndis_reset_request {
1256 /* Response to NdisReset */
1257 struct rndis_reset_complete {
1259 u32 addressing_reset;
1262 /* NdisMIndicateStatus message */
1263 struct rndis_indicate_status {
1266 u32 status_buf_offset;
1269 /* Diagnostic information passed as the status buffer in */
1270 /* struct rndis_indicate_status messages signifying error conditions. */
1271 struct rndis_diagnostic_info {
1276 /* NdisKeepAlive message */
1277 struct rndis_keepalive_request {
1281 /* Response to NdisKeepAlive */
1282 struct rndis_keepalive_complete {
1288 * Data message. All Offset fields contain byte offsets from the beginning of
1289 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
1290 * to 0 for connectionless data, otherwise it contains the VC handle.
1292 struct rndis_packet {
1295 u32 oob_data_offset;
1297 u32 num_oob_data_elements;
1298 u32 per_pkt_info_offset;
1299 u32 per_pkt_info_len;
1304 /* Optional Out of Band data associated with a Data message. */
1308 u32 class_info_offset;
1311 /* Packet extension field contents associated with a Data message. */
1312 struct rndis_per_packet_info {
1319 enum ndis_per_pkt_info_type {
1320 TCPIP_CHKSUM_PKTINFO,
1322 TCP_LARGESEND_PKTINFO,
1323 CLASSIFICATION_HANDLE_PKTINFO,
1329 NBL_HASH_VALUE = PACKET_CANCEL_ID,
1330 ORIGINAL_NET_BUFLIST,
1336 enum rndis_per_pkt_info_interal_type {
1337 RNDIS_PKTINFO_ID = 1,
1338 /* Add more members here */
1343 #define RNDIS_PKTINFO_SUBALLOC BIT(0)
1344 #define RNDIS_PKTINFO_1ST_FRAG BIT(1)
1345 #define RNDIS_PKTINFO_LAST_FRAG BIT(2)
1347 #define RNDIS_PKTINFO_ID_V1 1
1349 struct rndis_pktinfo_id {
1355 struct ndis_object_header {
1361 #define NDIS_OBJECT_TYPE_DEFAULT 0x80
1362 #define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
1363 #define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
1364 #define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
1366 #define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
1367 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
1368 #define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
1369 #define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
1370 #define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
1371 #define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
1372 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
1373 #define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
1374 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
1375 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
1377 #define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
1378 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
1379 #define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
1381 #define VERSION_4_OFFLOAD_SIZE 22
1383 * New offload OIDs for NDIS 6
1385 #define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
1386 #define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
1387 #define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
1388 #define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
1389 #define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
1390 #define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
1393 * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
1394 * ndis_type: NDIS_OBJTYPE_OFFLOAD
1397 #define NDIS_OFFLOAD_ENCAP_NONE 0x0000
1398 #define NDIS_OFFLOAD_ENCAP_NULL 0x0001
1399 #define NDIS_OFFLOAD_ENCAP_8023 0x0002
1400 #define NDIS_OFFLOAD_ENCAP_8023PQ 0x0004
1401 #define NDIS_OFFLOAD_ENCAP_8023PQ_OOB 0x0008
1402 #define NDIS_OFFLOAD_ENCAP_RFC1483 0x0010
1404 struct ndis_csum_offload {
1407 #define NDIS_TXCSUM_CAP_IP4OPT 0x001
1408 #define NDIS_TXCSUM_CAP_TCP4OPT 0x004
1409 #define NDIS_TXCSUM_CAP_TCP4 0x010
1410 #define NDIS_TXCSUM_CAP_UDP4 0x040
1411 #define NDIS_TXCSUM_CAP_IP4 0x100
1413 #define NDIS_TXCSUM_ALL_TCP4 (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
1417 #define NDIS_RXCSUM_CAP_IP4OPT 0x001
1418 #define NDIS_RXCSUM_CAP_TCP4OPT 0x004
1419 #define NDIS_RXCSUM_CAP_TCP4 0x010
1420 #define NDIS_RXCSUM_CAP_UDP4 0x040
1421 #define NDIS_RXCSUM_CAP_IP4 0x100
1424 #define NDIS_TXCSUM_CAP_IP6EXT 0x001
1425 #define NDIS_TXCSUM_CAP_TCP6OPT 0x004
1426 #define NDIS_TXCSUM_CAP_TCP6 0x010
1427 #define NDIS_TXCSUM_CAP_UDP6 0x040
1430 #define NDIS_RXCSUM_CAP_IP6EXT 0x001
1431 #define NDIS_RXCSUM_CAP_TCP6OPT 0x004
1432 #define NDIS_RXCSUM_CAP_TCP6 0x010
1433 #define NDIS_RXCSUM_CAP_UDP6 0x040
1435 #define NDIS_TXCSUM_ALL_TCP6 (NDIS_TXCSUM_CAP_TCP6 | \
1436 NDIS_TXCSUM_CAP_TCP6OPT | \
1437 NDIS_TXCSUM_CAP_IP6EXT)
1440 struct ndis_lsov1_offload {
1447 struct ndis_ipsecv1_offload {
1457 struct ndis_lsov2_offload {
1465 #define NDIS_LSOV2_CAP_IP6EXT 0x001
1466 #define NDIS_LSOV2_CAP_TCP6OPT 0x004
1468 #define NDIS_LSOV2_CAP_IP6 (NDIS_LSOV2_CAP_IP6EXT | \
1469 NDIS_LSOV2_CAP_TCP6OPT)
1472 struct ndis_ipsecv2_offload {
1491 struct ndis_rsc_offload {
1496 struct ndis_encap_offload {
1501 struct ndis_offload {
1502 struct ndis_object_header header;
1503 struct ndis_csum_offload csum;
1504 struct ndis_lsov1_offload lsov1;
1505 struct ndis_ipsecv1_offload ipsecv1;
1506 struct ndis_lsov2_offload lsov2;
1509 struct ndis_ipsecv2_offload ipsecv2;
1511 struct ndis_rsc_offload rsc;
1512 struct ndis_encap_offload encap_gre;
1515 #define NDIS_OFFLOAD_SIZE sizeof(struct ndis_offload)
1516 #define NDIS_OFFLOAD_SIZE_6_0 offsetof(struct ndis_offload, ipsecv2)
1517 #define NDIS_OFFLOAD_SIZE_6_1 offsetof(struct ndis_offload, rsc)
1519 struct ndis_offload_params {
1520 struct ndis_object_header header;
1530 u8 tcp_connection_ip_v4;
1531 u8 tcp_connection_ip_v6;
1540 u8 encapsulated_packet_task_offload;
1541 u8 encapsulation_types;
1545 struct ndis_tcp_lso_info {
1554 u32 tcp_header_offset:10;
1562 } lso_v1_transmit_complete;
1565 u32 tcp_header_offset:10;
1573 } lso_v2_transmit_complete;
1578 #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1579 sizeof(struct ndis_pkt_8021q_info))
1581 #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1582 sizeof(struct ndis_tcp_ip_checksum_info))
1584 #define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1585 sizeof(struct ndis_tcp_lso_info))
1587 #define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1590 /* Total size of all PPI data */
1591 #define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1592 NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1594 /* Format of Information buffer passed in a SetRequest for the OID */
1595 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1596 struct rndis_config_parameter_info {
1597 u32 parameter_name_offset;
1598 u32 parameter_name_length;
1600 u32 parameter_value_offset;
1601 u32 parameter_value_length;
1604 /* Values for ParameterType in struct rndis_config_parameter_info */
1605 #define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
1606 #define RNDIS_CONFIG_PARAM_TYPE_STRING 2
1608 /* CONDIS Miniport messages for connection oriented devices */
1609 /* that do not implement a call manager. */
1611 /* CoNdisMiniportCreateVc message */
1612 struct rcondis_mp_create_vc {
1617 /* Response to CoNdisMiniportCreateVc */
1618 struct rcondis_mp_create_vc_complete {
1624 /* CoNdisMiniportDeleteVc message */
1625 struct rcondis_mp_delete_vc {
1630 /* Response to CoNdisMiniportDeleteVc */
1631 struct rcondis_mp_delete_vc_complete {
1636 /* CoNdisMiniportQueryRequest message */
1637 struct rcondis_mp_query_request {
1643 u32 info_buf_offset;
1646 /* CoNdisMiniportSetRequest message */
1647 struct rcondis_mp_set_request {
1653 u32 info_buf_offset;
1656 /* CoNdisIndicateStatus message */
1657 struct rcondis_indicate_status {
1661 u32 status_buf_offset;
1664 /* CONDIS Call/VC parameters */
1665 struct rcondis_specific_parameters {
1667 u32 parameter_length;
1668 u32 parameter_lffset;
1671 struct rcondis_media_parameters {
1675 struct rcondis_specific_parameters media_specific;
1678 struct rndis_flowspec {
1680 u32 token_bucket_size;
1683 u32 delay_variation;
1686 u32 minimum_policed_size;
1689 struct rcondis_call_manager_parameters {
1690 struct rndis_flowspec transmit;
1691 struct rndis_flowspec receive;
1692 struct rcondis_specific_parameters call_mgr_specific;
1695 /* CoNdisMiniportActivateVc message */
1696 struct rcondis_mp_activate_vc_request {
1700 u32 media_params_offset;
1701 u32 media_params_length;
1702 u32 call_mgr_params_offset;
1703 u32 call_mgr_params_length;
1706 /* Response to CoNdisMiniportActivateVc */
1707 struct rcondis_mp_activate_vc_complete {
1712 /* CoNdisMiniportDeactivateVc message */
1713 struct rcondis_mp_deactivate_vc_request {
1719 /* Response to CoNdisMiniportDeactivateVc */
1720 struct rcondis_mp_deactivate_vc_complete {
1726 /* union with all of the RNDIS messages */
1727 union rndis_message_container {
1728 struct rndis_packet pkt;
1729 struct rndis_initialize_request init_req;
1730 struct rndis_halt_request halt_req;
1731 struct rndis_query_request query_req;
1732 struct rndis_set_request set_req;
1733 struct rndis_reset_request reset_req;
1734 struct rndis_keepalive_request keep_alive_req;
1735 struct rndis_indicate_status indicate_status;
1736 struct rndis_initialize_complete init_complete;
1737 struct rndis_query_complete query_complete;
1738 struct rndis_set_complete set_complete;
1739 struct rndis_reset_complete reset_complete;
1740 struct rndis_keepalive_complete keep_alive_complete;
1741 struct rcondis_mp_create_vc co_miniport_create_vc;
1742 struct rcondis_mp_delete_vc co_miniport_delete_vc;
1743 struct rcondis_indicate_status co_indicate_status;
1744 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1745 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1746 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1747 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1748 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1749 struct rcondis_mp_deactivate_vc_complete
1750 co_miniport_deactivate_vc_complete;
1753 /* Remote NDIS message format */
1754 struct rndis_message {
1757 /* Total length of this message, from the beginning */
1758 /* of the struct rndis_message, in bytes. */
1761 /* Actual message */
1762 union rndis_message_container msg;
1768 /* get the size of an RNDIS message. Pass in the message type, */
1769 /* struct rndis_set_request, struct rndis_packet for example */
1770 #define RNDIS_MESSAGE_SIZE(msg) \
1771 (sizeof(msg) + (sizeof(struct rndis_message) - \
1772 sizeof(union rndis_message_container)))
1774 #define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
1775 sizeof(union rndis_message_container))
1777 #define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1779 #define NDIS_PACKET_TYPE_DIRECTED 0x00000001
1780 #define NDIS_PACKET_TYPE_MULTICAST 0x00000002
1781 #define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
1782 #define NDIS_PACKET_TYPE_BROADCAST 0x00000008
1783 #define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
1784 #define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
1785 #define NDIS_PACKET_TYPE_SMT 0x00000040
1786 #define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
1787 #define NDIS_PACKET_TYPE_GROUP 0x00000100
1788 #define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
1789 #define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
1790 #define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
1792 #define TRANSPORT_INFO_NOT_IP 0
1793 #define TRANSPORT_INFO_IPV4_TCP 0x01
1794 #define TRANSPORT_INFO_IPV4_UDP 0x02
1795 #define TRANSPORT_INFO_IPV6_TCP 0x10
1796 #define TRANSPORT_INFO_IPV6_UDP 0x20
1798 #define RETRY_US_LO 5000
1799 #define RETRY_US_HI 10000
1800 #define RETRY_MAX 2000 /* >10 sec */
1802 void netvsc_dma_unmap(struct hv_device *hv_dev,
1803 struct hv_netvsc_packet *packet);
1804 #endif /* _HYPERV_NET_H */