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1/*
2 *
3 * Copyright (c) 2011, Microsoft Corporation.
4 *
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.
8 *
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
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Authors:
18 * Haiyang Zhang <haiyangz@microsoft.com>
19 * Hank Janssen <hjanssen@microsoft.com>
20 * K. Y. Srinivasan <kys@microsoft.com>
21 *
22 */
23
24#ifndef _HYPERV_NET_H
25#define _HYPERV_NET_H
26
27#include <linux/list.h>
28#include <linux/hyperv.h>
29#include <linux/rndis.h>
30
31/* RSS related */
32#define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */
33#define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */
34
35#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
36#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
37
38#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
39#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
40
41struct ndis_obj_header {
42 u8 type;
43 u8 rev;
44 u16 size;
45} __packed;
46
47/* ndis_recv_scale_cap/cap_flag */
48#define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
49#define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR 0x02000000
50#define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC 0x04000000
51#define NDIS_RSS_CAPS_USING_MSI_X 0x08000000
52#define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS 0x10000000
53#define NDIS_RSS_CAPS_SUPPORTS_MSI_X 0x20000000
54#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4 0x00000100
55#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6 0x00000200
56#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX 0x00000400
57
58struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
59 struct ndis_obj_header hdr;
60 u32 cap_flag;
61 u32 num_int_msg;
62 u32 num_recv_que;
63 u16 num_indirect_tabent;
64} __packed;
65
66
67/* ndis_recv_scale_param flags */
68#define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED 0x0001
69#define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED 0x0002
70#define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED 0x0004
71#define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED 0x0008
72#define NDIS_RSS_PARAM_FLAG_DISABLE_RSS 0x0010
73
74/* Hash info bits */
75#define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
76#define NDIS_HASH_IPV4 0x00000100
77#define NDIS_HASH_TCP_IPV4 0x00000200
78#define NDIS_HASH_IPV6 0x00000400
79#define NDIS_HASH_IPV6_EX 0x00000800
80#define NDIS_HASH_TCP_IPV6 0x00001000
81#define NDIS_HASH_TCP_IPV6_EX 0x00002000
82
83#define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
84#define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 40
85
86#define ITAB_NUM 128
87
88struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
89 struct ndis_obj_header hdr;
90
91 /* Qualifies the rest of the information */
92 u16 flag;
93
94 /* The base CPU number to do receive processing. not used */
95 u16 base_cpu_number;
96
97 /* This describes the hash function and type being enabled */
98 u32 hashinfo;
99
100 /* The size of indirection table array */
101 u16 indirect_tabsize;
102
103 /* The offset of the indirection table from the beginning of this
104 * structure
105 */
106 u32 indirect_taboffset;
107
108 /* The size of the hash secret key */
109 u16 hashkey_size;
110
111 /* The offset of the secret key from the beginning of this structure */
112 u32 kashkey_offset;
113
114 u32 processor_masks_offset;
115 u32 num_processor_masks;
116 u32 processor_masks_entry_size;
117};
118
119/* Fwd declaration */
120struct ndis_tcp_ip_checksum_info;
121
122/*
123 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
124 * within the RNDIS
125 *
126 * The size of this structure is less than 48 bytes and we can now
127 * place this structure in the skb->cb field.
128 */
129struct hv_netvsc_packet {
130 /* Bookkeeping stuff */
131 u8 cp_partial; /* partial copy into send buffer */
132
133 u8 rmsg_size; /* RNDIS header and PPI size */
134 u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
135 u8 page_buf_cnt;
136
137 u16 q_idx;
138 u32 send_buf_index;
139
140 u32 total_data_buflen;
141};
142
143struct netvsc_device_info {
144 unsigned char mac_adr[ETH_ALEN];
145 bool link_state; /* 0 - link up, 1 - link down */
146 int ring_size;
147 u32 max_num_vrss_chns;
148 u32 num_chn;
149};
150
151enum rndis_device_state {
152 RNDIS_DEV_UNINITIALIZED = 0,
153 RNDIS_DEV_INITIALIZING,
154 RNDIS_DEV_INITIALIZED,
155 RNDIS_DEV_DATAINITIALIZED,
156};
157
158struct rndis_device {
159 struct net_device *ndev;
160
161 enum rndis_device_state state;
162 bool link_state;
163 atomic_t new_req_id;
164
165 spinlock_t request_lock;
166 struct list_head req_list;
167
168 unsigned char hw_mac_adr[ETH_ALEN];
169};
170
171
172/* Interface */
173struct rndis_message;
174struct netvsc_device;
175int netvsc_device_add(struct hv_device *device, void *additional_info);
176void netvsc_device_remove(struct hv_device *device);
177int netvsc_send(struct hv_device *device,
178 struct hv_netvsc_packet *packet,
179 struct rndis_message *rndis_msg,
180 struct hv_page_buffer **page_buffer,
181 struct sk_buff *skb);
182void netvsc_linkstatus_callback(struct hv_device *device_obj,
183 struct rndis_message *resp);
184int netvsc_recv_callback(struct hv_device *device_obj,
185 struct hv_netvsc_packet *packet,
186 void **data,
187 struct ndis_tcp_ip_checksum_info *csum_info,
188 struct vmbus_channel *channel,
189 u16 vlan_tci);
190void netvsc_channel_cb(void *context);
191int rndis_filter_open(struct netvsc_device *nvdev);
192int rndis_filter_close(struct netvsc_device *nvdev);
193int rndis_filter_device_add(struct hv_device *dev,
194 void *additional_info);
195void rndis_filter_device_remove(struct hv_device *dev);
196int rndis_filter_receive(struct hv_device *dev,
197 struct hv_netvsc_packet *pkt,
198 void **data,
199 struct vmbus_channel *channel);
200
201int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter);
202int rndis_filter_set_device_mac(struct net_device *ndev, char *mac);
203
204void netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
205
206#define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
207
208#define NVSP_PROTOCOL_VERSION_1 2
209#define NVSP_PROTOCOL_VERSION_2 0x30002
210#define NVSP_PROTOCOL_VERSION_4 0x40000
211#define NVSP_PROTOCOL_VERSION_5 0x50000
212
213enum {
214 NVSP_MSG_TYPE_NONE = 0,
215
216 /* Init Messages */
217 NVSP_MSG_TYPE_INIT = 1,
218 NVSP_MSG_TYPE_INIT_COMPLETE = 2,
219
220 NVSP_VERSION_MSG_START = 100,
221
222 /* Version 1 Messages */
223 NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
224
225 NVSP_MSG1_TYPE_SEND_RECV_BUF,
226 NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
227 NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
228
229 NVSP_MSG1_TYPE_SEND_SEND_BUF,
230 NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
231 NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
232
233 NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
234 NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
235
236 /* Version 2 messages */
237 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
238 NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
239 NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
240
241 NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
242
243 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
244 NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
245
246 NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
247
248 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
249 NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
250
251 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
252 NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
253
254 NVSP_MSG2_TYPE_ALLOC_RXBUF,
255 NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
256
257 NVSP_MSG2_TYPE_FREE_RXBUF,
258
259 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
260 NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
261
262 NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
263
264 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
265 NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
266
267 NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
268
269 /* Version 4 messages */
270 NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
271 NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
272 NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
273
274 NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
275
276 /* Version 5 messages */
277 NVSP_MSG5_TYPE_OID_QUERY_EX,
278 NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
279 NVSP_MSG5_TYPE_SUBCHANNEL,
280 NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
281
282 NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
283};
284
285enum {
286 NVSP_STAT_NONE = 0,
287 NVSP_STAT_SUCCESS,
288 NVSP_STAT_FAIL,
289 NVSP_STAT_PROTOCOL_TOO_NEW,
290 NVSP_STAT_PROTOCOL_TOO_OLD,
291 NVSP_STAT_INVALID_RNDIS_PKT,
292 NVSP_STAT_BUSY,
293 NVSP_STAT_PROTOCOL_UNSUPPORTED,
294 NVSP_STAT_MAX,
295};
296
297struct nvsp_message_header {
298 u32 msg_type;
299};
300
301/* Init Messages */
302
303/*
304 * This message is used by the VSC to initialize the channel after the channels
305 * has been opened. This message should never include anything other then
306 * versioning (i.e. this message will be the same for ever).
307 */
308struct nvsp_message_init {
309 u32 min_protocol_ver;
310 u32 max_protocol_ver;
311} __packed;
312
313/*
314 * This message is used by the VSP to complete the initialization of the
315 * channel. This message should never include anything other then versioning
316 * (i.e. this message will be the same for ever).
317 */
318struct nvsp_message_init_complete {
319 u32 negotiated_protocol_ver;
320 u32 max_mdl_chain_len;
321 u32 status;
322} __packed;
323
324union nvsp_message_init_uber {
325 struct nvsp_message_init init;
326 struct nvsp_message_init_complete init_complete;
327} __packed;
328
329/* Version 1 Messages */
330
331/*
332 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
333 * can use this information when handling OIDs sent by the VSC.
334 */
335struct nvsp_1_message_send_ndis_version {
336 u32 ndis_major_ver;
337 u32 ndis_minor_ver;
338} __packed;
339
340/*
341 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
342 * can then use the receive buffer to send data to the VSC.
343 */
344struct nvsp_1_message_send_receive_buffer {
345 u32 gpadl_handle;
346 u16 id;
347} __packed;
348
349struct nvsp_1_receive_buffer_section {
350 u32 offset;
351 u32 sub_alloc_size;
352 u32 num_sub_allocs;
353 u32 end_offset;
354} __packed;
355
356/*
357 * This message is used by the VSP to acknowledge a receive buffer send by the
358 * VSC. This message must be sent by the VSP before the VSP uses the receive
359 * buffer.
360 */
361struct nvsp_1_message_send_receive_buffer_complete {
362 u32 status;
363 u32 num_sections;
364
365 /*
366 * The receive buffer is split into two parts, a large suballocation
367 * section and a small suballocation section. These sections are then
368 * suballocated by a certain size.
369 */
370
371 /*
372 * For example, the following break up of the receive buffer has 6
373 * large suballocations and 10 small suballocations.
374 */
375
376 /*
377 * | Large Section | | Small Section |
378 * ------------------------------------------------------------
379 * | | | | | | | | | | | | | | | | | |
380 * | |
381 * LargeOffset SmallOffset
382 */
383
384 struct nvsp_1_receive_buffer_section sections[1];
385} __packed;
386
387/*
388 * This message is sent by the VSC to revoke the receive buffer. After the VSP
389 * completes this transaction, the vsp should never use the receive buffer
390 * again.
391 */
392struct nvsp_1_message_revoke_receive_buffer {
393 u16 id;
394};
395
396/*
397 * This message is used by the VSC to send a send buffer to the VSP. The VSC
398 * can then use the send buffer to send data to the VSP.
399 */
400struct nvsp_1_message_send_send_buffer {
401 u32 gpadl_handle;
402 u16 id;
403} __packed;
404
405/*
406 * This message is used by the VSP to acknowledge a send buffer sent by the
407 * VSC. This message must be sent by the VSP before the VSP uses the sent
408 * buffer.
409 */
410struct nvsp_1_message_send_send_buffer_complete {
411 u32 status;
412
413 /*
414 * The VSC gets to choose the size of the send buffer and the VSP gets
415 * to choose the sections size of the buffer. This was done to enable
416 * dynamic reconfigurations when the cost of GPA-direct buffers
417 * decreases.
418 */
419 u32 section_size;
420} __packed;
421
422/*
423 * This message is sent by the VSC to revoke the send buffer. After the VSP
424 * completes this transaction, the vsp should never use the send buffer again.
425 */
426struct nvsp_1_message_revoke_send_buffer {
427 u16 id;
428};
429
430/*
431 * This message is used by both the VSP and the VSC to send a RNDIS message to
432 * the opposite channel endpoint.
433 */
434struct nvsp_1_message_send_rndis_packet {
435 /*
436 * This field is specified by RNDIS. They assume there's two different
437 * channels of communication. However, the Network VSP only has one.
438 * Therefore, the channel travels with the RNDIS packet.
439 */
440 u32 channel_type;
441
442 /*
443 * This field is used to send part or all of the data through a send
444 * buffer. This values specifies an index into the send buffer. If the
445 * index is 0xFFFFFFFF, then the send buffer is not being used and all
446 * of the data was sent through other VMBus mechanisms.
447 */
448 u32 send_buf_section_index;
449 u32 send_buf_section_size;
450} __packed;
451
452/*
453 * This message is used by both the VSP and the VSC to complete a RNDIS message
454 * to the opposite channel endpoint. At this point, the initiator of this
455 * message cannot use any resources associated with the original RNDIS packet.
456 */
457struct nvsp_1_message_send_rndis_packet_complete {
458 u32 status;
459};
460
461union nvsp_1_message_uber {
462 struct nvsp_1_message_send_ndis_version send_ndis_ver;
463
464 struct nvsp_1_message_send_receive_buffer send_recv_buf;
465 struct nvsp_1_message_send_receive_buffer_complete
466 send_recv_buf_complete;
467 struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
468
469 struct nvsp_1_message_send_send_buffer send_send_buf;
470 struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
471 struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
472
473 struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
474 struct nvsp_1_message_send_rndis_packet_complete
475 send_rndis_pkt_complete;
476} __packed;
477
478
479/*
480 * Network VSP protocol version 2 messages:
481 */
482struct nvsp_2_vsc_capability {
483 union {
484 u64 data;
485 struct {
486 u64 vmq:1;
487 u64 chimney:1;
488 u64 sriov:1;
489 u64 ieee8021q:1;
490 u64 correlation_id:1;
491 u64 teaming:1;
492 };
493 };
494} __packed;
495
496struct nvsp_2_send_ndis_config {
497 u32 mtu;
498 u32 reserved;
499 struct nvsp_2_vsc_capability capability;
500} __packed;
501
502/* Allocate receive buffer */
503struct nvsp_2_alloc_rxbuf {
504 /* Allocation ID to match the allocation request and response */
505 u32 alloc_id;
506
507 /* Length of the VM shared memory receive buffer that needs to
508 * be allocated
509 */
510 u32 len;
511} __packed;
512
513/* Allocate receive buffer complete */
514struct nvsp_2_alloc_rxbuf_comp {
515 /* The NDIS_STATUS code for buffer allocation */
516 u32 status;
517
518 u32 alloc_id;
519
520 /* GPADL handle for the allocated receive buffer */
521 u32 gpadl_handle;
522
523 /* Receive buffer ID */
524 u64 recv_buf_id;
525} __packed;
526
527struct nvsp_2_free_rxbuf {
528 u64 recv_buf_id;
529} __packed;
530
531union nvsp_2_message_uber {
532 struct nvsp_2_send_ndis_config send_ndis_config;
533 struct nvsp_2_alloc_rxbuf alloc_rxbuf;
534 struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
535 struct nvsp_2_free_rxbuf free_rxbuf;
536} __packed;
537
538struct nvsp_4_send_vf_association {
539 /* 1: allocated, serial number is valid. 0: not allocated */
540 u32 allocated;
541
542 /* Serial number of the VF to team with */
543 u32 serial;
544} __packed;
545
546enum nvsp_vm_datapath {
547 NVSP_DATAPATH_SYNTHETIC = 0,
548 NVSP_DATAPATH_VF,
549 NVSP_DATAPATH_MAX
550};
551
552struct nvsp_4_sw_datapath {
553 u32 active_datapath; /* active data path in VM */
554} __packed;
555
556union nvsp_4_message_uber {
557 struct nvsp_4_send_vf_association vf_assoc;
558 struct nvsp_4_sw_datapath active_dp;
559} __packed;
560
561enum nvsp_subchannel_operation {
562 NVSP_SUBCHANNEL_NONE = 0,
563 NVSP_SUBCHANNEL_ALLOCATE,
564 NVSP_SUBCHANNEL_MAX
565};
566
567struct nvsp_5_subchannel_request {
568 u32 op;
569 u32 num_subchannels;
570} __packed;
571
572struct nvsp_5_subchannel_complete {
573 u32 status;
574 u32 num_subchannels; /* Actual number of subchannels allocated */
575} __packed;
576
577struct nvsp_5_send_indirect_table {
578 /* The number of entries in the send indirection table */
579 u32 count;
580
581 /* The offset of the send indirection table from top of this struct.
582 * The send indirection table tells which channel to put the send
583 * traffic on. Each entry is a channel number.
584 */
585 u32 offset;
586} __packed;
587
588union nvsp_5_message_uber {
589 struct nvsp_5_subchannel_request subchn_req;
590 struct nvsp_5_subchannel_complete subchn_comp;
591 struct nvsp_5_send_indirect_table send_table;
592} __packed;
593
594union nvsp_all_messages {
595 union nvsp_message_init_uber init_msg;
596 union nvsp_1_message_uber v1_msg;
597 union nvsp_2_message_uber v2_msg;
598 union nvsp_4_message_uber v4_msg;
599 union nvsp_5_message_uber v5_msg;
600} __packed;
601
602/* ALL Messages */
603struct nvsp_message {
604 struct nvsp_message_header hdr;
605 union nvsp_all_messages msg;
606} __packed;
607
608
609#define NETVSC_MTU 65535
610#define NETVSC_MTU_MIN ETH_MIN_MTU
611
612#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
613#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */
614#define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
615#define NETVSC_INVALID_INDEX -1
616
617
618#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
619#define NETVSC_SEND_BUFFER_ID 0
620
621#define NETVSC_PACKET_SIZE 4096
622
623#define VRSS_SEND_TAB_SIZE 16
624#define VRSS_CHANNEL_MAX 64
625
626#define RNDIS_MAX_PKT_DEFAULT 8
627#define RNDIS_PKT_ALIGN_DEFAULT 8
628
629struct multi_send_data {
630 struct sk_buff *skb; /* skb containing the pkt */
631 struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
632 u32 count; /* counter of batched packets */
633};
634
635struct recv_comp_data {
636 u64 tid; /* transaction id */
637 u32 status;
638};
639
640/* Netvsc Receive Slots Max */
641#define NETVSC_RECVSLOT_MAX (NETVSC_RECEIVE_BUFFER_SIZE / ETH_DATA_LEN + 1)
642
643struct multi_recv_comp {
644 void *buf; /* queued receive completions */
645 u32 first; /* first data entry */
646 u32 next; /* next entry for writing */
647};
648
649struct netvsc_stats {
650 u64 packets;
651 u64 bytes;
652 u64 broadcast;
653 u64 multicast;
654 struct u64_stats_sync syncp;
655};
656
657struct netvsc_ethtool_stats {
658 unsigned long tx_scattered;
659 unsigned long tx_no_memory;
660 unsigned long tx_no_space;
661 unsigned long tx_too_big;
662 unsigned long tx_busy;
663};
664
665struct netvsc_reconfig {
666 struct list_head list;
667 u32 event;
668};
669
670/* The context of the netvsc device */
671struct net_device_context {
672 /* point back to our device context */
673 struct hv_device *device_ctx;
674 /* netvsc_device */
675 struct netvsc_device *nvdev;
676 /* reconfigure work */
677 struct delayed_work dwork;
678 /* last reconfig time */
679 unsigned long last_reconfig;
680 /* reconfig events */
681 struct list_head reconfig_events;
682 /* list protection */
683 spinlock_t lock;
684
685 struct work_struct work;
686 u32 msg_enable; /* debug level */
687
688 struct netvsc_stats __percpu *tx_stats;
689 struct netvsc_stats __percpu *rx_stats;
690
691 /* Ethtool settings */
692 u8 duplex;
693 u32 speed;
694 struct netvsc_ethtool_stats eth_stats;
695
696 /* the device is going away */
697 bool start_remove;
698
699 /* State to manage the associated VF interface. */
700 struct net_device __rcu *vf_netdev;
701
702 /* 1: allocated, serial number is valid. 0: not allocated */
703 u32 vf_alloc;
704 /* Serial number of the VF to team with */
705 u32 vf_serial;
706};
707
708/* Per netvsc device */
709struct netvsc_device {
710 u32 nvsp_version;
711
712 atomic_t num_outstanding_sends;
713 wait_queue_head_t wait_drain;
714 bool destroy;
715
716 /* Receive buffer allocated by us but manages by NetVSP */
717 void *recv_buf;
718 u32 recv_buf_size;
719 u32 recv_buf_gpadl_handle;
720 u32 recv_section_cnt;
721 struct nvsp_1_receive_buffer_section *recv_section;
722
723 /* Send buffer allocated by us */
724 void *send_buf;
725 u32 send_buf_size;
726 u32 send_buf_gpadl_handle;
727 u32 send_section_cnt;
728 u32 send_section_size;
729 unsigned long *send_section_map;
730 int map_words;
731
732 /* Used for NetVSP initialization protocol */
733 struct completion channel_init_wait;
734 struct nvsp_message channel_init_pkt;
735
736 struct nvsp_message revoke_packet;
737
738 struct vmbus_channel *chn_table[VRSS_CHANNEL_MAX];
739 u32 send_table[VRSS_SEND_TAB_SIZE];
740 u32 max_chn;
741 u32 num_chn;
742 spinlock_t sc_lock; /* Protects num_sc_offered variable */
743 u32 num_sc_offered;
744 atomic_t queue_sends[VRSS_CHANNEL_MAX];
745
746 /* Holds rndis device info */
747 void *extension;
748
749 int ring_size;
750
751 /* The primary channel callback buffer */
752 unsigned char *cb_buffer;
753 /* The sub channel callback buffer */
754 unsigned char *sub_cb_buf;
755
756 struct multi_send_data msd[VRSS_CHANNEL_MAX];
757 u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
758 u32 pkt_align; /* alignment bytes, e.g. 8 */
759
760 struct multi_recv_comp mrc[VRSS_CHANNEL_MAX];
761 atomic_t num_outstanding_recvs;
762
763 atomic_t open_cnt;
764};
765
766static inline struct netvsc_device *
767net_device_to_netvsc_device(struct net_device *ndev)
768{
769 return ((struct net_device_context *)netdev_priv(ndev))->nvdev;
770}
771
772static inline struct netvsc_device *
773hv_device_to_netvsc_device(struct hv_device *device)
774{
775 return net_device_to_netvsc_device(hv_get_drvdata(device));
776}
777
778/* NdisInitialize message */
779struct rndis_initialize_request {
780 u32 req_id;
781 u32 major_ver;
782 u32 minor_ver;
783 u32 max_xfer_size;
784};
785
786/* Response to NdisInitialize */
787struct rndis_initialize_complete {
788 u32 req_id;
789 u32 status;
790 u32 major_ver;
791 u32 minor_ver;
792 u32 dev_flags;
793 u32 medium;
794 u32 max_pkt_per_msg;
795 u32 max_xfer_size;
796 u32 pkt_alignment_factor;
797 u32 af_list_offset;
798 u32 af_list_size;
799};
800
801/* Call manager devices only: Information about an address family */
802/* supported by the device is appended to the response to NdisInitialize. */
803struct rndis_co_address_family {
804 u32 address_family;
805 u32 major_ver;
806 u32 minor_ver;
807};
808
809/* NdisHalt message */
810struct rndis_halt_request {
811 u32 req_id;
812};
813
814/* NdisQueryRequest message */
815struct rndis_query_request {
816 u32 req_id;
817 u32 oid;
818 u32 info_buflen;
819 u32 info_buf_offset;
820 u32 dev_vc_handle;
821};
822
823/* Response to NdisQueryRequest */
824struct rndis_query_complete {
825 u32 req_id;
826 u32 status;
827 u32 info_buflen;
828 u32 info_buf_offset;
829};
830
831/* NdisSetRequest message */
832struct rndis_set_request {
833 u32 req_id;
834 u32 oid;
835 u32 info_buflen;
836 u32 info_buf_offset;
837 u32 dev_vc_handle;
838};
839
840/* Response to NdisSetRequest */
841struct rndis_set_complete {
842 u32 req_id;
843 u32 status;
844};
845
846/* NdisReset message */
847struct rndis_reset_request {
848 u32 reserved;
849};
850
851/* Response to NdisReset */
852struct rndis_reset_complete {
853 u32 status;
854 u32 addressing_reset;
855};
856
857/* NdisMIndicateStatus message */
858struct rndis_indicate_status {
859 u32 status;
860 u32 status_buflen;
861 u32 status_buf_offset;
862};
863
864/* Diagnostic information passed as the status buffer in */
865/* struct rndis_indicate_status messages signifying error conditions. */
866struct rndis_diagnostic_info {
867 u32 diag_status;
868 u32 error_offset;
869};
870
871/* NdisKeepAlive message */
872struct rndis_keepalive_request {
873 u32 req_id;
874};
875
876/* Response to NdisKeepAlive */
877struct rndis_keepalive_complete {
878 u32 req_id;
879 u32 status;
880};
881
882/*
883 * Data message. All Offset fields contain byte offsets from the beginning of
884 * struct rndis_packet. All Length fields are in bytes. VcHandle is set
885 * to 0 for connectionless data, otherwise it contains the VC handle.
886 */
887struct rndis_packet {
888 u32 data_offset;
889 u32 data_len;
890 u32 oob_data_offset;
891 u32 oob_data_len;
892 u32 num_oob_data_elements;
893 u32 per_pkt_info_offset;
894 u32 per_pkt_info_len;
895 u32 vc_handle;
896 u32 reserved;
897};
898
899/* Optional Out of Band data associated with a Data message. */
900struct rndis_oobd {
901 u32 size;
902 u32 type;
903 u32 class_info_offset;
904};
905
906/* Packet extension field contents associated with a Data message. */
907struct rndis_per_packet_info {
908 u32 size;
909 u32 type;
910 u32 ppi_offset;
911};
912
913enum ndis_per_pkt_info_type {
914 TCPIP_CHKSUM_PKTINFO,
915 IPSEC_PKTINFO,
916 TCP_LARGESEND_PKTINFO,
917 CLASSIFICATION_HANDLE_PKTINFO,
918 NDIS_RESERVED,
919 SG_LIST_PKTINFO,
920 IEEE_8021Q_INFO,
921 ORIGINAL_PKTINFO,
922 PACKET_CANCEL_ID,
923 NBL_HASH_VALUE = PACKET_CANCEL_ID,
924 ORIGINAL_NET_BUFLIST,
925 CACHED_NET_BUFLIST,
926 SHORT_PKT_PADINFO,
927 MAX_PER_PKT_INFO
928};
929
930struct ndis_pkt_8021q_info {
931 union {
932 struct {
933 u32 pri:3; /* User Priority */
934 u32 cfi:1; /* Canonical Format ID */
935 u32 vlanid:12; /* VLAN ID */
936 u32 reserved:16;
937 };
938 u32 value;
939 };
940};
941
942struct ndis_oject_header {
943 u8 type;
944 u8 revision;
945 u16 size;
946};
947
948#define NDIS_OBJECT_TYPE_DEFAULT 0x80
949#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
950#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
951#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
952#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
953#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
954#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
955#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
956#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
957#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
958#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
959#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
960
961#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
962#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
963#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
964
965#define VERSION_4_OFFLOAD_SIZE 22
966/*
967 * New offload OIDs for NDIS 6
968 */
969#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
970#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
971#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
972#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
973#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
974#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
975
976struct ndis_offload_params {
977 struct ndis_oject_header header;
978 u8 ip_v4_csum;
979 u8 tcp_ip_v4_csum;
980 u8 udp_ip_v4_csum;
981 u8 tcp_ip_v6_csum;
982 u8 udp_ip_v6_csum;
983 u8 lso_v1;
984 u8 ip_sec_v1;
985 u8 lso_v2_ipv4;
986 u8 lso_v2_ipv6;
987 u8 tcp_connection_ip_v4;
988 u8 tcp_connection_ip_v6;
989 u32 flags;
990 u8 ip_sec_v2;
991 u8 ip_sec_v2_ip_v4;
992 struct {
993 u8 rsc_ip_v4;
994 u8 rsc_ip_v6;
995 };
996 struct {
997 u8 encapsulated_packet_task_offload;
998 u8 encapsulation_types;
999 };
1000};
1001
1002struct ndis_tcp_ip_checksum_info {
1003 union {
1004 struct {
1005 u32 is_ipv4:1;
1006 u32 is_ipv6:1;
1007 u32 tcp_checksum:1;
1008 u32 udp_checksum:1;
1009 u32 ip_header_checksum:1;
1010 u32 reserved:11;
1011 u32 tcp_header_offset:10;
1012 } transmit;
1013 struct {
1014 u32 tcp_checksum_failed:1;
1015 u32 udp_checksum_failed:1;
1016 u32 ip_checksum_failed:1;
1017 u32 tcp_checksum_succeeded:1;
1018 u32 udp_checksum_succeeded:1;
1019 u32 ip_checksum_succeeded:1;
1020 u32 loopback:1;
1021 u32 tcp_checksum_value_invalid:1;
1022 u32 ip_checksum_value_invalid:1;
1023 } receive;
1024 u32 value;
1025 };
1026};
1027
1028struct ndis_tcp_lso_info {
1029 union {
1030 struct {
1031 u32 unused:30;
1032 u32 type:1;
1033 u32 reserved2:1;
1034 } transmit;
1035 struct {
1036 u32 mss:20;
1037 u32 tcp_header_offset:10;
1038 u32 type:1;
1039 u32 reserved2:1;
1040 } lso_v1_transmit;
1041 struct {
1042 u32 tcp_payload:30;
1043 u32 type:1;
1044 u32 reserved2:1;
1045 } lso_v1_transmit_complete;
1046 struct {
1047 u32 mss:20;
1048 u32 tcp_header_offset:10;
1049 u32 type:1;
1050 u32 ip_version:1;
1051 } lso_v2_transmit;
1052 struct {
1053 u32 reserved:30;
1054 u32 type:1;
1055 u32 reserved2:1;
1056 } lso_v2_transmit_complete;
1057 u32 value;
1058 };
1059};
1060
1061#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1062 sizeof(struct ndis_pkt_8021q_info))
1063
1064#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1065 sizeof(struct ndis_tcp_ip_checksum_info))
1066
1067#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1068 sizeof(struct ndis_tcp_lso_info))
1069
1070#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
1071 sizeof(u32))
1072
1073/* Total size of all PPI data */
1074#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
1075 NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
1076
1077/* Format of Information buffer passed in a SetRequest for the OID */
1078/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
1079struct rndis_config_parameter_info {
1080 u32 parameter_name_offset;
1081 u32 parameter_name_length;
1082 u32 parameter_type;
1083 u32 parameter_value_offset;
1084 u32 parameter_value_length;
1085};
1086
1087/* Values for ParameterType in struct rndis_config_parameter_info */
1088#define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
1089#define RNDIS_CONFIG_PARAM_TYPE_STRING 2
1090
1091/* CONDIS Miniport messages for connection oriented devices */
1092/* that do not implement a call manager. */
1093
1094/* CoNdisMiniportCreateVc message */
1095struct rcondis_mp_create_vc {
1096 u32 req_id;
1097 u32 ndis_vc_handle;
1098};
1099
1100/* Response to CoNdisMiniportCreateVc */
1101struct rcondis_mp_create_vc_complete {
1102 u32 req_id;
1103 u32 dev_vc_handle;
1104 u32 status;
1105};
1106
1107/* CoNdisMiniportDeleteVc message */
1108struct rcondis_mp_delete_vc {
1109 u32 req_id;
1110 u32 dev_vc_handle;
1111};
1112
1113/* Response to CoNdisMiniportDeleteVc */
1114struct rcondis_mp_delete_vc_complete {
1115 u32 req_id;
1116 u32 status;
1117};
1118
1119/* CoNdisMiniportQueryRequest message */
1120struct rcondis_mp_query_request {
1121 u32 req_id;
1122 u32 request_type;
1123 u32 oid;
1124 u32 dev_vc_handle;
1125 u32 info_buflen;
1126 u32 info_buf_offset;
1127};
1128
1129/* CoNdisMiniportSetRequest message */
1130struct rcondis_mp_set_request {
1131 u32 req_id;
1132 u32 request_type;
1133 u32 oid;
1134 u32 dev_vc_handle;
1135 u32 info_buflen;
1136 u32 info_buf_offset;
1137};
1138
1139/* CoNdisIndicateStatus message */
1140struct rcondis_indicate_status {
1141 u32 ndis_vc_handle;
1142 u32 status;
1143 u32 status_buflen;
1144 u32 status_buf_offset;
1145};
1146
1147/* CONDIS Call/VC parameters */
1148struct rcondis_specific_parameters {
1149 u32 parameter_type;
1150 u32 parameter_length;
1151 u32 parameter_lffset;
1152};
1153
1154struct rcondis_media_parameters {
1155 u32 flags;
1156 u32 reserved1;
1157 u32 reserved2;
1158 struct rcondis_specific_parameters media_specific;
1159};
1160
1161struct rndis_flowspec {
1162 u32 token_rate;
1163 u32 token_bucket_size;
1164 u32 peak_bandwidth;
1165 u32 latency;
1166 u32 delay_variation;
1167 u32 service_type;
1168 u32 max_sdu_size;
1169 u32 minimum_policed_size;
1170};
1171
1172struct rcondis_call_manager_parameters {
1173 struct rndis_flowspec transmit;
1174 struct rndis_flowspec receive;
1175 struct rcondis_specific_parameters call_mgr_specific;
1176};
1177
1178/* CoNdisMiniportActivateVc message */
1179struct rcondis_mp_activate_vc_request {
1180 u32 req_id;
1181 u32 flags;
1182 u32 dev_vc_handle;
1183 u32 media_params_offset;
1184 u32 media_params_length;
1185 u32 call_mgr_params_offset;
1186 u32 call_mgr_params_length;
1187};
1188
1189/* Response to CoNdisMiniportActivateVc */
1190struct rcondis_mp_activate_vc_complete {
1191 u32 req_id;
1192 u32 status;
1193};
1194
1195/* CoNdisMiniportDeactivateVc message */
1196struct rcondis_mp_deactivate_vc_request {
1197 u32 req_id;
1198 u32 flags;
1199 u32 dev_vc_handle;
1200};
1201
1202/* Response to CoNdisMiniportDeactivateVc */
1203struct rcondis_mp_deactivate_vc_complete {
1204 u32 req_id;
1205 u32 status;
1206};
1207
1208
1209/* union with all of the RNDIS messages */
1210union rndis_message_container {
1211 struct rndis_packet pkt;
1212 struct rndis_initialize_request init_req;
1213 struct rndis_halt_request halt_req;
1214 struct rndis_query_request query_req;
1215 struct rndis_set_request set_req;
1216 struct rndis_reset_request reset_req;
1217 struct rndis_keepalive_request keep_alive_req;
1218 struct rndis_indicate_status indicate_status;
1219 struct rndis_initialize_complete init_complete;
1220 struct rndis_query_complete query_complete;
1221 struct rndis_set_complete set_complete;
1222 struct rndis_reset_complete reset_complete;
1223 struct rndis_keepalive_complete keep_alive_complete;
1224 struct rcondis_mp_create_vc co_miniport_create_vc;
1225 struct rcondis_mp_delete_vc co_miniport_delete_vc;
1226 struct rcondis_indicate_status co_indicate_status;
1227 struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
1228 struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
1229 struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
1230 struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
1231 struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
1232 struct rcondis_mp_deactivate_vc_complete
1233 co_miniport_deactivate_vc_complete;
1234};
1235
1236/* Remote NDIS message format */
1237struct rndis_message {
1238 u32 ndis_msg_type;
1239
1240 /* Total length of this message, from the beginning */
1241 /* of the struct rndis_message, in bytes. */
1242 u32 msg_len;
1243
1244 /* Actual message */
1245 union rndis_message_container msg;
1246};
1247
1248
1249/* Handy macros */
1250
1251/* get the size of an RNDIS message. Pass in the message type, */
1252/* struct rndis_set_request, struct rndis_packet for example */
1253#define RNDIS_MESSAGE_SIZE(msg) \
1254 (sizeof(msg) + (sizeof(struct rndis_message) - \
1255 sizeof(union rndis_message_container)))
1256
1257/* get pointer to info buffer with message pointer */
1258#define MESSAGE_TO_INFO_BUFFER(msg) \
1259 (((unsigned char *)(msg)) + msg->info_buf_offset)
1260
1261/* get pointer to status buffer with message pointer */
1262#define MESSAGE_TO_STATUS_BUFFER(msg) \
1263 (((unsigned char *)(msg)) + msg->status_buf_offset)
1264
1265/* get pointer to OOBD buffer with message pointer */
1266#define MESSAGE_TO_OOBD_BUFFER(msg) \
1267 (((unsigned char *)(msg)) + msg->oob_data_offset)
1268
1269/* get pointer to data buffer with message pointer */
1270#define MESSAGE_TO_DATA_BUFFER(msg) \
1271 (((unsigned char *)(msg)) + msg->per_pkt_info_offset)
1272
1273/* get pointer to contained message from NDIS_MESSAGE pointer */
1274#define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg) \
1275 ((void *) &rndis_msg->msg)
1276
1277/* get pointer to contained message from NDIS_MESSAGE pointer */
1278#define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg) \
1279 ((void *) rndis_msg)
1280
1281
1282#define __struct_bcount(x)
1283
1284
1285
1286#define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
1287 sizeof(union rndis_message_container))
1288
1289#define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
1290
1291#define NDIS_PACKET_TYPE_DIRECTED 0x00000001
1292#define NDIS_PACKET_TYPE_MULTICAST 0x00000002
1293#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
1294#define NDIS_PACKET_TYPE_BROADCAST 0x00000008
1295#define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
1296#define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
1297#define NDIS_PACKET_TYPE_SMT 0x00000040
1298#define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
1299#define NDIS_PACKET_TYPE_GROUP 0x00000100
1300#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
1301#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
1302#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
1303
1304#define INFO_IPV4 2
1305#define INFO_IPV6 4
1306#define INFO_TCP 2
1307#define INFO_UDP 4
1308
1309#define TRANSPORT_INFO_NOT_IP 0
1310#define TRANSPORT_INFO_IPV4_TCP ((INFO_IPV4 << 16) | INFO_TCP)
1311#define TRANSPORT_INFO_IPV4_UDP ((INFO_IPV4 << 16) | INFO_UDP)
1312#define TRANSPORT_INFO_IPV6_TCP ((INFO_IPV6 << 16) | INFO_TCP)
1313#define TRANSPORT_INFO_IPV6_UDP ((INFO_IPV6 << 16) | INFO_UDP)
1314
1315#endif /* _HYPERV_NET_H */