?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
fix some coding style problems
[qemu/ar7.git] / hw / net / vmxnet3.c
blobd97897670d9e257b448ea55256a52823bf2db240
1 /*
2 * QEMU VMWARE VMXNET3 paravirtual NIC
3 *
4 * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
5 *
6 * Developed by Daynix Computing LTD (http://www.daynix.com)
7 *
8 * Authors:
9 * Dmitry Fleytman <dmitry@daynix.com>
10 * Tamir Shomer <tamirs@daynix.com>
11 * Yan Vugenfirer <yan@daynix.com>
12 *
13 * This work is licensed under the terms of the GNU GPL, version 2.
14 * See the COPYING file in the top-level directory.
15 *
16 */
17
18 #include "qemu/osdep.h"
19 #include "hw/hw.h"
20 #include "hw/pci/pci.h"
21 #include "net/net.h"
22 #include "net/tap.h"
23 #include "net/checksum.h"
24 #include "sysemu/sysemu.h"
25 #include "qemu-common.h"
26 #include "qemu/bswap.h"
27 #include "hw/pci/msix.h"
28 #include "hw/pci/msi.h"
29
30 #include "vmxnet3.h"
31 #include "vmxnet_debug.h"
32 #include "vmware_utils.h"
33 #include "net_tx_pkt.h"
34 #include "net_rx_pkt.h"
35
36 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
37 #define VMXNET3_MSIX_BAR_SIZE 0x2000
38 #define MIN_BUF_SIZE 60
39
40 /* Compatibility flags for migration */
41 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
42 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
43 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
44 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
45 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
46 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
47
48 #define VMXNET3_EXP_EP_OFFSET (0x48)
49 #define VMXNET3_MSI_OFFSET(s) \
50 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
51 #define VMXNET3_MSIX_OFFSET(s) \
52 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
53 #define VMXNET3_DSN_OFFSET (0x100)
54
55 #define VMXNET3_BAR0_IDX (0)
56 #define VMXNET3_BAR1_IDX (1)
57 #define VMXNET3_MSIX_BAR_IDX (2)
58
59 #define VMXNET3_OFF_MSIX_TABLE (0x000)
60 #define VMXNET3_OFF_MSIX_PBA(s) \
61 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
62
63 /* Link speed in Mbps should be shifted by 16 */
64 #define VMXNET3_LINK_SPEED (1000 << 16)
65
66 /* Link status: 1 - up, 0 - down. */
67 #define VMXNET3_LINK_STATUS_UP 0x1
68
69 /* Least significant bit should be set for revision and version */
70 #define VMXNET3_UPT_REVISION 0x1
71 #define VMXNET3_DEVICE_REVISION 0x1
72
73 /* Number of interrupt vectors for non-MSIx modes */
74 #define VMXNET3_MAX_NMSIX_INTRS (1)
75
76 /* Macros for rings descriptors access */
77 #define VMXNET3_READ_TX_QUEUE_DESCR8(dpa, field) \
78 (vmw_shmem_ld8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
79
80 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(dpa, field, value) \
81 (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
82
83 #define VMXNET3_READ_TX_QUEUE_DESCR32(dpa, field) \
84 (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
85
86 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(dpa, field, value) \
87 (vmw_shmem_st32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
88
89 #define VMXNET3_READ_TX_QUEUE_DESCR64(dpa, field) \
90 (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
91
92 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(dpa, field, value) \
93 (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
94
95 #define VMXNET3_READ_RX_QUEUE_DESCR64(dpa, field) \
96 (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
97
98 #define VMXNET3_READ_RX_QUEUE_DESCR32(dpa, field) \
99 (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
100
101 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(dpa, field, value) \
102 (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
103
104 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(dpa, field, value) \
105 (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
106
107 /* Macros for guest driver shared area access */
108 #define VMXNET3_READ_DRV_SHARED64(shpa, field) \
109 (vmw_shmem_ld64(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
110
111 #define VMXNET3_READ_DRV_SHARED32(shpa, field) \
112 (vmw_shmem_ld32(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
113
114 #define VMXNET3_WRITE_DRV_SHARED32(shpa, field, val) \
115 (vmw_shmem_st32(shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
116
117 #define VMXNET3_READ_DRV_SHARED16(shpa, field) \
118 (vmw_shmem_ld16(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
119
120 #define VMXNET3_READ_DRV_SHARED8(shpa, field) \
121 (vmw_shmem_ld8(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
122
123 #define VMXNET3_READ_DRV_SHARED(shpa, field, b, l) \
124 (vmw_shmem_read(shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
125
126 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
127
128 typedef struct VMXNET3Class {
129 PCIDeviceClass parent_class;
130 DeviceRealize parent_dc_realize;
131 } VMXNET3Class;
132
133 #define TYPE_VMXNET3 "vmxnet3"
134 #define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
135
136 #define VMXNET3_DEVICE_CLASS(klass) \
137 OBJECT_CLASS_CHECK(VMXNET3Class, (klass), TYPE_VMXNET3)
138 #define VMXNET3_DEVICE_GET_CLASS(obj) \
139 OBJECT_GET_CLASS(VMXNET3Class, (obj), TYPE_VMXNET3)
140
141 /* Cyclic ring abstraction */
142 typedef struct {
143 hwaddr pa;
144 size_t size;
145 size_t cell_size;
146 size_t next;
147 uint8_t gen;
148 } Vmxnet3Ring;
149
150 static inline void vmxnet3_ring_init(Vmxnet3Ring *ring,
151 hwaddr pa,
152 size_t size,
153 size_t cell_size,
154 bool zero_region)
155 {
156 ring->pa = pa;
157 ring->size = size;
158 ring->cell_size = cell_size;
159 ring->gen = VMXNET3_INIT_GEN;
160 ring->next = 0;
161
162 if (zero_region) {
163 vmw_shmem_set(pa, 0, size * cell_size);
164 }
165 }
166
167 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
168 macro("%s#%d: base %" PRIx64 " size %zu cell_size %zu gen %d next %zu", \
169 (ring_name), (ridx), \
170 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
171
172 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
173 {
174 if (++ring->next >= ring->size) {
175 ring->next = 0;
176 ring->gen ^= 1;
177 }
178 }
179
180 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
181 {
182 if (ring->next-- == 0) {
183 ring->next = ring->size - 1;
184 ring->gen ^= 1;
185 }
186 }
187
188 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
189 {
190 return ring->pa + ring->next * ring->cell_size;
191 }
192
193 static inline void vmxnet3_ring_read_curr_cell(Vmxnet3Ring *ring, void *buff)
194 {
195 vmw_shmem_read(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
196 }
197
198 static inline void vmxnet3_ring_write_curr_cell(Vmxnet3Ring *ring, void *buff)
199 {
200 vmw_shmem_write(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
201 }
202
203 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
204 {
205 return ring->next;
206 }
207
208 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
209 {
210 return ring->gen;
211 }
212
213 /* Debug trace-related functions */
214 static inline void
215 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
216 {
217 VMW_PKPRN("TX DESCR: "
218 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
219 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
220 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
221 le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
222 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
223 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
224 }
225
226 static inline void
227 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
228 {
229 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
230 "csum_start: %d, csum_offset: %d",
231 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
232 vhdr->csum_start, vhdr->csum_offset);
233 }
234
235 static inline void
236 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
237 {
238 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
239 "dtype: %d, ext1: %d, btype: %d",
240 le64_to_cpu(descr->addr), descr->len, descr->gen,
241 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
242 }
243
244 /* Device state and helper functions */
245 #define VMXNET3_RX_RINGS_PER_QUEUE (2)
246
247 typedef struct {
248 Vmxnet3Ring tx_ring;
249 Vmxnet3Ring comp_ring;
250
251 uint8_t intr_idx;
252 hwaddr tx_stats_pa;
253 struct UPT1_TxStats txq_stats;
254 } Vmxnet3TxqDescr;
255
256 typedef struct {
257 Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
258 Vmxnet3Ring comp_ring;
259 uint8_t intr_idx;
260 hwaddr rx_stats_pa;
261 struct UPT1_RxStats rxq_stats;
262 } Vmxnet3RxqDescr;
263
264 typedef struct {
265 bool is_masked;
266 bool is_pending;
267 bool is_asserted;
268 } Vmxnet3IntState;
269
270 typedef struct {
271 PCIDevice parent_obj;
272 NICState *nic;
273 NICConf conf;
274 MemoryRegion bar0;
275 MemoryRegion bar1;
276 MemoryRegion msix_bar;
277
278 Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
279 Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
280
281 /* Whether MSI-X support was installed successfully */
282 bool msix_used;
283 /* Whether MSI support was installed successfully */
284 bool msi_used;
285 hwaddr drv_shmem;
286 hwaddr temp_shared_guest_driver_memory;
287
288 uint8_t txq_num;
289
290 /* This boolean tells whether RX packet being indicated has to */
291 /* be split into head and body chunks from different RX rings */
292 bool rx_packets_compound;
293
294 bool rx_vlan_stripping;
295 bool lro_supported;
296
297 uint8_t rxq_num;
298
299 /* Network MTU */
300 uint32_t mtu;
301
302 /* Maximum number of fragments for indicated TX packets */
303 uint32_t max_tx_frags;
304
305 /* Maximum number of fragments for indicated RX packets */
306 uint16_t max_rx_frags;
307
308 /* Index for events interrupt */
309 uint8_t event_int_idx;
310
311 /* Whether automatic interrupts masking enabled */
312 bool auto_int_masking;
313
314 bool peer_has_vhdr;
315
316 /* TX packets to QEMU interface */
317 struct NetTxPkt *tx_pkt;
318 uint32_t offload_mode;
319 uint32_t cso_or_gso_size;
320 uint16_t tci;
321 bool needs_vlan;
322
323 struct NetRxPkt *rx_pkt;
324
325 bool tx_sop;
326 bool skip_current_tx_pkt;
327
328 uint32_t device_active;
329 uint32_t last_command;
330
331 uint32_t link_status_and_speed;
332
333 Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
334
335 uint32_t temp_mac; /* To store the low part first */
336
337 MACAddr perm_mac;
338 uint32_t vlan_table[VMXNET3_VFT_SIZE];
339 uint32_t rx_mode;
340 MACAddr *mcast_list;
341 uint32_t mcast_list_len;
342 uint32_t mcast_list_buff_size; /* needed for live migration. */
343
344 /* Compatibility flags for migration */
345 uint32_t compat_flags;
346 } VMXNET3State;
347
348 /* Interrupt management */
349
350 /*
351 * This function returns sign whether interrupt line is in asserted state
352 * This depends on the type of interrupt used. For INTX interrupt line will
353 * be asserted until explicit deassertion, for MSI(X) interrupt line will
354 * be deasserted automatically due to notification semantics of the MSI(X)
355 * interrupts
356 */
357 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
358 {
359 PCIDevice *d = PCI_DEVICE(s);
360
361 if (s->msix_used && msix_enabled(d)) {
362 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
363 msix_notify(d, int_idx);
364 return false;
365 }
366 if (s->msi_used && msi_enabled(d)) {
367 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
368 msi_notify(d, int_idx);
369 return false;
370 }
371
372 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
373 pci_irq_assert(d);
374 return true;
375 }
376
377 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
378 {
379 PCIDevice *d = PCI_DEVICE(s);
380
381 /*
382 * This function should never be called for MSI(X) interrupts
383 * because deassertion never required for message interrupts
384 */
385 assert(!s->msix_used || !msix_enabled(d));
386 /*
387 * This function should never be called for MSI(X) interrupts
388 * because deassertion never required for message interrupts
389 */
390 assert(!s->msi_used || !msi_enabled(d));
391
392 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
393 pci_irq_deassert(d);
394 }
395
396 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
397 {
398 if (!s->interrupt_states[lidx].is_pending &&
399 s->interrupt_states[lidx].is_asserted) {
400 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
401 _vmxnet3_deassert_interrupt_line(s, lidx);
402 s->interrupt_states[lidx].is_asserted = false;
403 return;
404 }
405
406 if (s->interrupt_states[lidx].is_pending &&
407 !s->interrupt_states[lidx].is_masked &&
408 !s->interrupt_states[lidx].is_asserted) {
409 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
410 s->interrupt_states[lidx].is_asserted =
411 _vmxnet3_assert_interrupt_line(s, lidx);
412 s->interrupt_states[lidx].is_pending = false;
413 return;
414 }
415 }
416
417 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
418 {
419 PCIDevice *d = PCI_DEVICE(s);
420 s->interrupt_states[lidx].is_pending = true;
421 vmxnet3_update_interrupt_line_state(s, lidx);
422
423 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
424 goto do_automask;
425 }
426
427 if (s->msi_used && msi_enabled(d) && s->auto_int_masking) {
428 goto do_automask;
429 }
430
431 return;
432
433 do_automask:
434 s->interrupt_states[lidx].is_masked = true;
435 vmxnet3_update_interrupt_line_state(s, lidx);
436 }
437
438 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
439 {
440 return s->interrupt_states[lidx].is_asserted;
441 }
442
443 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
444 {
445 s->interrupt_states[int_idx].is_pending = false;
446 if (s->auto_int_masking) {
447 s->interrupt_states[int_idx].is_masked = true;
448 }
449 vmxnet3_update_interrupt_line_state(s, int_idx);
450 }
451
452 static void
453 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
454 {
455 s->interrupt_states[lidx].is_masked = is_masked;
456 vmxnet3_update_interrupt_line_state(s, lidx);
457 }
458
459 static bool vmxnet3_verify_driver_magic(hwaddr dshmem)
460 {
461 return (VMXNET3_READ_DRV_SHARED32(dshmem, magic) == VMXNET3_REV1_MAGIC);
462 }
463
464 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
465 #define VMXNET3_MAKE_BYTE(byte_num, val) \
466 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
467
468 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
469 {
470 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
471 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
472 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
473 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
474 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
475 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
476
477 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
478
479 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
480 }
481
482 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
483 {
484 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
485 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
486 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
487 VMXNET3_MAKE_BYTE(3, addr->a[3]);
488 }
489
490 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
491 {
492 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
493 VMXNET3_MAKE_BYTE(1, addr->a[5]);
494 }
495
496 static void
497 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
498 {
499 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
500 }
501
502 static inline void
503 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
504 {
505 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
506 }
507
508 static inline void
509 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
510 {
511 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
512 }
513
514 static void
515 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
516 {
517 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
518 }
519
520 static void
521 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
522 {
523 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
524 }
525
526 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
527 {
528 struct Vmxnet3_TxCompDesc txcq_descr;
529
530 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
531
532 txcq_descr.txdIdx = tx_ridx;
533 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
534
535 vmxnet3_ring_write_curr_cell(&s->txq_descr[qidx].comp_ring, &txcq_descr);
536
537 /* Flush changes in TX descriptor before changing the counter value */
538 smp_wmb();
539
540 vmxnet3_inc_tx_completion_counter(s, qidx);
541 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
542 }
543
544 static bool
545 vmxnet3_setup_tx_offloads(VMXNET3State *s)
546 {
547 switch (s->offload_mode) {
548 case VMXNET3_OM_NONE:
549 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
550 break;
551
552 case VMXNET3_OM_CSUM:
553 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
554 VMW_PKPRN("L4 CSO requested\n");
555 break;
556
557 case VMXNET3_OM_TSO:
558 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
559 s->cso_or_gso_size);
560 net_tx_pkt_update_ip_checksums(s->tx_pkt);
561 VMW_PKPRN("GSO offload requested.");
562 break;
563
564 default:
565 g_assert_not_reached();
566 return false;
567 }
568
569 return true;
570 }
571
572 static void
573 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
574 const struct Vmxnet3_TxDesc *txd)
575 {
576 s->offload_mode = txd->om;
577 s->cso_or_gso_size = txd->msscof;
578 s->tci = txd->tci;
579 s->needs_vlan = txd->ti;
580 }
581
582 typedef enum {
583 VMXNET3_PKT_STATUS_OK,
584 VMXNET3_PKT_STATUS_ERROR,
585 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
586 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
587 } Vmxnet3PktStatus;
588
589 static void
590 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
591 Vmxnet3PktStatus status)
592 {
593 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
594 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
595
596 switch (status) {
597 case VMXNET3_PKT_STATUS_OK:
598 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
599 case ETH_PKT_BCAST:
600 stats->bcastPktsTxOK++;
601 stats->bcastBytesTxOK += tot_len;
602 break;
603 case ETH_PKT_MCAST:
604 stats->mcastPktsTxOK++;
605 stats->mcastBytesTxOK += tot_len;
606 break;
607 case ETH_PKT_UCAST:
608 stats->ucastPktsTxOK++;
609 stats->ucastBytesTxOK += tot_len;
610 break;
611 default:
612 g_assert_not_reached();
613 }
614
615 if (s->offload_mode == VMXNET3_OM_TSO) {
616 /*
617 * According to VMWARE headers this statistic is a number
618 * of packets after segmentation but since we don't have
619 * this information in QEMU model, the best we can do is to
620 * provide number of non-segmented packets
621 */
622 stats->TSOPktsTxOK++;
623 stats->TSOBytesTxOK += tot_len;
624 }
625 break;
626
627 case VMXNET3_PKT_STATUS_DISCARD:
628 stats->pktsTxDiscard++;
629 break;
630
631 case VMXNET3_PKT_STATUS_ERROR:
632 stats->pktsTxError++;
633 break;
634
635 default:
636 g_assert_not_reached();
637 }
638 }
639
640 static void
641 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
642 int qidx,
643 Vmxnet3PktStatus status)
644 {
645 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
646 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
647
648 switch (status) {
649 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
650 stats->pktsRxOutOfBuf++;
651 break;
652
653 case VMXNET3_PKT_STATUS_ERROR:
654 stats->pktsRxError++;
655 break;
656 case VMXNET3_PKT_STATUS_OK:
657 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
658 case ETH_PKT_BCAST:
659 stats->bcastPktsRxOK++;
660 stats->bcastBytesRxOK += tot_len;
661 break;
662 case ETH_PKT_MCAST:
663 stats->mcastPktsRxOK++;
664 stats->mcastBytesRxOK += tot_len;
665 break;
666 case ETH_PKT_UCAST:
667 stats->ucastPktsRxOK++;
668 stats->ucastBytesRxOK += tot_len;
669 break;
670 default:
671 g_assert_not_reached();
672 }
673
674 if (tot_len > s->mtu) {
675 stats->LROPktsRxOK++;
676 stats->LROBytesRxOK += tot_len;
677 }
678 break;
679 default:
680 g_assert_not_reached();
681 }
682 }
683
684 static inline bool
685 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
686 int qidx,
687 struct Vmxnet3_TxDesc *txd,
688 uint32_t *descr_idx)
689 {
690 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
691
692 vmxnet3_ring_read_curr_cell(ring, txd);
693 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
694 /* Only read after generation field verification */
695 smp_rmb();
696 /* Re-read to be sure we got the latest version */
697 vmxnet3_ring_read_curr_cell(ring, txd);
698 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
699 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
700 vmxnet3_inc_tx_consumption_counter(s, qidx);
701 return true;
702 }
703
704 return false;
705 }
706
707 static bool
708 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
709 {
710 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
711
712 if (!vmxnet3_setup_tx_offloads(s)) {
713 status = VMXNET3_PKT_STATUS_ERROR;
714 goto func_exit;
715 }
716
717 /* debug prints */
718 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
719 net_tx_pkt_dump(s->tx_pkt);
720
721 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
722 status = VMXNET3_PKT_STATUS_DISCARD;
723 goto func_exit;
724 }
725
726 func_exit:
727 vmxnet3_on_tx_done_update_stats(s, qidx, status);
728 return (status == VMXNET3_PKT_STATUS_OK);
729 }
730
731 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
732 {
733 struct Vmxnet3_TxDesc txd;
734 uint32_t txd_idx;
735 uint32_t data_len;
736 hwaddr data_pa;
737
738 for (;;) {
739 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
740 break;
741 }
742
743 vmxnet3_dump_tx_descr(&txd);
744
745 if (!s->skip_current_tx_pkt) {
746 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
747 data_pa = le64_to_cpu(txd.addr);
748
749 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
750 data_pa,
751 data_len)) {
752 s->skip_current_tx_pkt = true;
753 }
754 }
755
756 if (s->tx_sop) {
757 vmxnet3_tx_retrieve_metadata(s, &txd);
758 s->tx_sop = false;
759 }
760
761 if (txd.eop) {
762 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
763 if (s->needs_vlan) {
764 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
765 }
766
767 vmxnet3_send_packet(s, qidx);
768 } else {
769 vmxnet3_on_tx_done_update_stats(s, qidx,
770 VMXNET3_PKT_STATUS_ERROR);
771 }
772
773 vmxnet3_complete_packet(s, qidx, txd_idx);
774 s->tx_sop = true;
775 s->skip_current_tx_pkt = false;
776 net_tx_pkt_reset(s->tx_pkt);
777 }
778 }
779 }
780
781 static inline void
782 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
783 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
784 {
785 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
786 *didx = vmxnet3_ring_curr_cell_idx(ring);
787 vmxnet3_ring_read_curr_cell(ring, dbuf);
788 }
789
790 static inline uint8_t
791 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
792 {
793 return s->rxq_descr[qidx].rx_ring[ridx].gen;
794 }
795
796 static inline hwaddr
797 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
798 {
799 uint8_t ring_gen;
800 struct Vmxnet3_RxCompDesc rxcd;
801
802 hwaddr daddr =
803 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
804
805 pci_dma_read(PCI_DEVICE(s), daddr,
806 &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
807
808 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
809
810 if (rxcd.gen != ring_gen) {
811 *descr_gen = ring_gen;
812 vmxnet3_inc_rx_completion_counter(s, qidx);
813 return daddr;
814 }
815
816 return 0;
817 }
818
819 static inline void
820 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
821 {
822 vmxnet3_dec_rx_completion_counter(s, qidx);
823 }
824
825 #define RXQ_IDX (0)
826 #define RX_HEAD_BODY_RING (0)
827 #define RX_BODY_ONLY_RING (1)
828
829 static bool
830 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
831 struct Vmxnet3_RxDesc *descr_buf,
832 uint32_t *descr_idx,
833 uint32_t *ridx)
834 {
835 for (;;) {
836 uint32_t ring_gen;
837 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
838 descr_buf, descr_idx);
839
840 /* If no more free descriptors - return */
841 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
842 if (descr_buf->gen != ring_gen) {
843 return false;
844 }
845
846 /* Only read after generation field verification */
847 smp_rmb();
848 /* Re-read to be sure we got the latest version */
849 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
850 descr_buf, descr_idx);
851
852 /* Mark current descriptor as used/skipped */
853 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
854
855 /* If this is what we are looking for - return */
856 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
857 *ridx = RX_HEAD_BODY_RING;
858 return true;
859 }
860 }
861 }
862
863 static bool
864 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
865 struct Vmxnet3_RxDesc *d,
866 uint32_t *didx,
867 uint32_t *ridx)
868 {
869 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
870
871 /* Try to find corresponding descriptor in head/body ring */
872 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
873 /* Only read after generation field verification */
874 smp_rmb();
875 /* Re-read to be sure we got the latest version */
876 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
877 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
878 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
879 *ridx = RX_HEAD_BODY_RING;
880 return true;
881 }
882 }
883
884 /*
885 * If there is no free descriptors on head/body ring or next free
886 * descriptor is a head descriptor switch to body only ring
887 */
888 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
889
890 /* If no more free descriptors - return */
891 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
892 /* Only read after generation field verification */
893 smp_rmb();
894 /* Re-read to be sure we got the latest version */
895 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
896 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
897 *ridx = RX_BODY_ONLY_RING;
898 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
899 return true;
900 }
901
902 return false;
903 }
904
905 static inline bool
906 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
907 struct Vmxnet3_RxDesc *descr_buf,
908 uint32_t *descr_idx,
909 uint32_t *ridx)
910 {
911 if (is_head || !s->rx_packets_compound) {
912 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
913 } else {
914 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
915 }
916 }
917
918 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
919 * the implementation always passes an RxCompDesc with a "Checksum
920 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
921 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
922 *
923 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
924 * and place a fully computed checksum into the tcp/udp header.
925 * Otherwise, the OS driver will receive a checksum-correct indication
926 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
927 * having just the pseudo header csum value.
928 *
929 * While this is not a problem if packet is destined for local delivery,
930 * in the case the host OS performs forwarding, it will forward an
931 * incorrectly checksummed packet.
932 */
933 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
934 const void *pkt_data,
935 size_t pkt_len)
936 {
937 struct virtio_net_hdr *vhdr;
938 bool isip4, isip6, istcp, isudp;
939 uint8_t *data;
940 int len;
941
942 if (!net_rx_pkt_has_virt_hdr(pkt)) {
943 return;
944 }
945
946 vhdr = net_rx_pkt_get_vhdr(pkt);
947 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
948 return;
949 }
950
951 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
952 if (!(isip4 || isip6) || !(istcp || isudp)) {
953 return;
954 }
955
956 vmxnet3_dump_virt_hdr(vhdr);
957
958 /* Validate packet len: csum_start + scum_offset + length of csum field */
959 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
960 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
961 "cannot calculate checksum",
962 pkt_len, vhdr->csum_start, vhdr->csum_offset);
963 return;
964 }
965
966 data = (uint8_t *)pkt_data + vhdr->csum_start;
967 len = pkt_len - vhdr->csum_start;
968 /* Put the checksum obtained into the packet */
969 stw_be_p(data + vhdr->csum_offset, net_raw_checksum(data, len));
970
971 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
972 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
973 }
974
975 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
976 struct Vmxnet3_RxCompDesc *rxcd)
977 {
978 int csum_ok, is_gso;
979 bool isip4, isip6, istcp, isudp;
980 struct virtio_net_hdr *vhdr;
981 uint8_t offload_type;
982
983 if (net_rx_pkt_is_vlan_stripped(pkt)) {
984 rxcd->ts = 1;
985 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
986 }
987
988 if (!net_rx_pkt_has_virt_hdr(pkt)) {
989 goto nocsum;
990 }
991
992 vhdr = net_rx_pkt_get_vhdr(pkt);
993 /*
994 * Checksum is valid when lower level tell so or when lower level
995 * requires checksum offload telling that packet produced/bridged
996 * locally and did travel over network after last checksum calculation
997 * or production
998 */
999 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
1000 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
1001
1002 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
1003 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
1004
1005 if (!csum_ok && !is_gso) {
1006 goto nocsum;
1007 }
1008
1009 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
1010 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
1011 goto nocsum;
1012 }
1013
1014 rxcd->cnc = 0;
1015 rxcd->v4 = isip4 ? 1 : 0;
1016 rxcd->v6 = isip6 ? 1 : 0;
1017 rxcd->tcp = istcp ? 1 : 0;
1018 rxcd->udp = isudp ? 1 : 0;
1019 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
1020 return;
1021
1022 nocsum:
1023 rxcd->cnc = 1;
1024 return;
1025 }
1026
1027 static void
1028 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
1029 const struct iovec *iov,
1030 size_t start_iov_off,
1031 hwaddr target_addr,
1032 size_t bytes_to_copy)
1033 {
1034 size_t curr_off = 0;
1035 size_t copied = 0;
1036
1037 while (bytes_to_copy) {
1038 if (start_iov_off < (curr_off + iov->iov_len)) {
1039 size_t chunk_len =
1040 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
1041
1042 pci_dma_write(pci_dev, target_addr + copied,
1043 iov->iov_base + start_iov_off - curr_off,
1044 chunk_len);
1045
1046 copied += chunk_len;
1047 start_iov_off += chunk_len;
1048 curr_off = start_iov_off;
1049 bytes_to_copy -= chunk_len;
1050 } else {
1051 curr_off += iov->iov_len;
1052 }
1053 iov++;
1054 }
1055 }
1056
1057 static bool
1058 vmxnet3_indicate_packet(VMXNET3State *s)
1059 {
1060 struct Vmxnet3_RxDesc rxd;
1061 bool is_head = true;
1062 uint32_t rxd_idx;
1063 uint32_t rx_ridx = 0;
1064
1065 struct Vmxnet3_RxCompDesc rxcd;
1066 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
1067 hwaddr new_rxcd_pa = 0;
1068 hwaddr ready_rxcd_pa = 0;
1069 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
1070 size_t bytes_copied = 0;
1071 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
1072 uint16_t num_frags = 0;
1073 size_t chunk_size;
1074
1075 net_rx_pkt_dump(s->rx_pkt);
1076
1077 while (bytes_left > 0) {
1078
1079 /* cannot add more frags to packet */
1080 if (num_frags == s->max_rx_frags) {
1081 break;
1082 }
1083
1084 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1085 if (!new_rxcd_pa) {
1086 break;
1087 }
1088
1089 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1090 break;
1091 }
1092
1093 chunk_size = MIN(bytes_left, rxd.len);
1094 vmxnet3_pci_dma_writev(PCI_DEVICE(s), data, bytes_copied,
1095 le64_to_cpu(rxd.addr), chunk_size);
1096 bytes_copied += chunk_size;
1097 bytes_left -= chunk_size;
1098
1099 vmxnet3_dump_rx_descr(&rxd);
1100
1101 if (ready_rxcd_pa != 0) {
1102 pci_dma_write(PCI_DEVICE(s), ready_rxcd_pa, &rxcd, sizeof(rxcd));
1103 }
1104
1105 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1106 rxcd.rxdIdx = rxd_idx;
1107 rxcd.len = chunk_size;
1108 rxcd.sop = is_head;
1109 rxcd.gen = new_rxcd_gen;
1110 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1111
1112 if (bytes_left == 0) {
1113 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1114 }
1115
1116 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1117 "sop %d csum_correct %lu",
1118 (unsigned long) rx_ridx,
1119 (unsigned long) rxcd.rxdIdx,
1120 (unsigned long) rxcd.len,
1121 (int) rxcd.sop,
1122 (unsigned long) rxcd.tuc);
1123
1124 is_head = false;
1125 ready_rxcd_pa = new_rxcd_pa;
1126 new_rxcd_pa = 0;
1127 num_frags++;
1128 }
1129
1130 if (ready_rxcd_pa != 0) {
1131 rxcd.eop = 1;
1132 rxcd.err = (bytes_left != 0);
1133
1134 pci_dma_write(PCI_DEVICE(s), ready_rxcd_pa, &rxcd, sizeof(rxcd));
1135
1136 /* Flush RX descriptor changes */
1137 smp_wmb();
1138 }
1139
1140 if (new_rxcd_pa != 0) {
1141 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1142 }
1143
1144 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1145
1146 if (bytes_left == 0) {
1147 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1148 return true;
1149 } else if (num_frags == s->max_rx_frags) {
1150 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1151 return false;
1152 } else {
1153 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1154 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1155 return false;
1156 }
1157 }
1158
1159 static void
1160 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1161 uint64_t val, unsigned size)
1162 {
1163 VMXNET3State *s = opaque;
1164
1165 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1166 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1167 int tx_queue_idx =
1168 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1169 VMXNET3_REG_ALIGN);
1170 assert(tx_queue_idx <= s->txq_num);
1171 vmxnet3_process_tx_queue(s, tx_queue_idx);
1172 return;
1173 }
1174
1175 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1176 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1177 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1178 VMXNET3_REG_ALIGN);
1179
1180 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1181
1182 vmxnet3_on_interrupt_mask_changed(s, l, val);
1183 return;
1184 }
1185
1186 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1187 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1188 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1189 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1190 return;
1191 }
1192
1193 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1194 (uint64_t) addr, val, size);
1195 }
1196
1197 static uint64_t
1198 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1199 {
1200 VMXNET3State *s = opaque;
1201
1202 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1203 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1204 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1205 VMXNET3_REG_ALIGN);
1206 return s->interrupt_states[l].is_masked;
1207 }
1208
1209 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1210 return 0;
1211 }
1212
1213 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1214 {
1215 int i;
1216 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1217 s->interrupt_states[i].is_asserted = false;
1218 s->interrupt_states[i].is_pending = false;
1219 s->interrupt_states[i].is_masked = true;
1220 }
1221 }
1222
1223 static void vmxnet3_reset_mac(VMXNET3State *s)
1224 {
1225 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1226 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1227 }
1228
1229 static void vmxnet3_deactivate_device(VMXNET3State *s)
1230 {
1231 if (s->device_active) {
1232 VMW_CBPRN("Deactivating vmxnet3...");
1233 net_tx_pkt_reset(s->tx_pkt);
1234 net_tx_pkt_uninit(s->tx_pkt);
1235 net_rx_pkt_uninit(s->rx_pkt);
1236 s->device_active = false;
1237 }
1238 }
1239
1240 static void vmxnet3_reset(VMXNET3State *s)
1241 {
1242 VMW_CBPRN("Resetting vmxnet3...");
1243
1244 vmxnet3_deactivate_device(s);
1245 vmxnet3_reset_interrupt_states(s);
1246 s->drv_shmem = 0;
1247 s->tx_sop = true;
1248 s->skip_current_tx_pkt = false;
1249 }
1250
1251 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1252 {
1253 s->rx_mode = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
1254 devRead.rxFilterConf.rxMode);
1255 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1256 }
1257
1258 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1259 {
1260 int i;
1261
1262 /* Copy configuration from shared memory */
1263 VMXNET3_READ_DRV_SHARED(s->drv_shmem,
1264 devRead.rxFilterConf.vfTable,
1265 s->vlan_table,
1266 sizeof(s->vlan_table));
1267
1268 /* Invert byte order when needed */
1269 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1270 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1271 }
1272
1273 /* Dump configuration for debugging purposes */
1274 VMW_CFPRN("Configured VLANs:");
1275 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1276 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1277 VMW_CFPRN("\tVLAN %d is present", i);
1278 }
1279 }
1280 }
1281
1282 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1283 {
1284 uint16_t list_bytes =
1285 VMXNET3_READ_DRV_SHARED16(s->drv_shmem,
1286 devRead.rxFilterConf.mfTableLen);
1287
1288 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1289
1290 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1291 if (!s->mcast_list) {
1292 if (s->mcast_list_len == 0) {
1293 VMW_CFPRN("Current multicast list is empty");
1294 } else {
1295 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1296 s->mcast_list_len);
1297 }
1298 s->mcast_list_len = 0;
1299 } else {
1300 int i;
1301 hwaddr mcast_list_pa =
1302 VMXNET3_READ_DRV_SHARED64(s->drv_shmem,
1303 devRead.rxFilterConf.mfTablePA);
1304
1305 pci_dma_read(PCI_DEVICE(s), mcast_list_pa, s->mcast_list, list_bytes);
1306
1307 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1308 for (i = 0; i < s->mcast_list_len; i++) {
1309 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1310 }
1311 }
1312 }
1313
1314 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1315 {
1316 vmxnet3_update_rx_mode(s);
1317 vmxnet3_update_vlan_filters(s);
1318 vmxnet3_update_mcast_filters(s);
1319 }
1320
1321 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1322 {
1323 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1324 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1325 return interrupt_mode;
1326 }
1327
1328 static void vmxnet3_fill_stats(VMXNET3State *s)
1329 {
1330 int i;
1331
1332 if (!s->device_active)
1333 return;
1334
1335 for (i = 0; i < s->txq_num; i++) {
1336 pci_dma_write(PCI_DEVICE(s),
1337 s->txq_descr[i].tx_stats_pa,
1338 &s->txq_descr[i].txq_stats,
1339 sizeof(s->txq_descr[i].txq_stats));
1340 }
1341
1342 for (i = 0; i < s->rxq_num; i++) {
1343 pci_dma_write(PCI_DEVICE(s),
1344 s->rxq_descr[i].rx_stats_pa,
1345 &s->rxq_descr[i].rxq_stats,
1346 sizeof(s->rxq_descr[i].rxq_stats));
1347 }
1348 }
1349
1350 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1351 {
1352 struct Vmxnet3_GOSInfo gos;
1353
1354 VMXNET3_READ_DRV_SHARED(s->drv_shmem, devRead.misc.driverInfo.gos,
1355 &gos, sizeof(gos));
1356 s->rx_packets_compound =
1357 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1358
1359 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1360 }
1361
1362 static void
1363 vmxnet3_dump_conf_descr(const char *name,
1364 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1365 {
1366 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1367 name, pm_descr->confVer, pm_descr->confLen);
1368
1369 };
1370
1371 static void vmxnet3_update_pm_state(VMXNET3State *s)
1372 {
1373 struct Vmxnet3_VariableLenConfDesc pm_descr;
1374
1375 pm_descr.confLen =
1376 VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confLen);
1377 pm_descr.confVer =
1378 VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confVer);
1379 pm_descr.confPA =
1380 VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.pmConfDesc.confPA);
1381
1382 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1383 }
1384
1385 static void vmxnet3_update_features(VMXNET3State *s)
1386 {
1387 uint32_t guest_features;
1388 int rxcso_supported;
1389
1390 guest_features = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
1391 devRead.misc.uptFeatures);
1392
1393 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1394 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1395 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1396
1397 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1398 s->lro_supported, rxcso_supported,
1399 s->rx_vlan_stripping);
1400 if (s->peer_has_vhdr) {
1401 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1402 rxcso_supported,
1403 s->lro_supported,
1404 s->lro_supported,
1405 0,
1406 0);
1407 }
1408 }
1409
1410 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1411 {
1412 return s->msix_used || s->msi_used || (intx ==
1413 (pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1));
1414 }
1415
1416 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1417 {
1418 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1419 if (idx >= max_ints) {
1420 hw_error("Bad interrupt index: %d\n", idx);
1421 }
1422 }
1423
1424 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1425 {
1426 int i;
1427
1428 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1429 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1430
1431 for (i = 0; i < s->txq_num; i++) {
1432 int idx = s->txq_descr[i].intr_idx;
1433 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1434 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1435 }
1436
1437 for (i = 0; i < s->rxq_num; i++) {
1438 int idx = s->rxq_descr[i].intr_idx;
1439 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1440 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1441 }
1442 }
1443
1444 static void vmxnet3_validate_queues(VMXNET3State *s)
1445 {
1446 /*
1447 * txq_num and rxq_num are total number of queues
1448 * configured by guest. These numbers must not
1449 * exceed corresponding maximal values.
1450 */
1451
1452 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1453 hw_error("Bad TX queues number: %d\n", s->txq_num);
1454 }
1455
1456 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1457 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1458 }
1459 }
1460
1461 static void vmxnet3_activate_device(VMXNET3State *s)
1462 {
1463 int i;
1464 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1465 hwaddr qdescr_table_pa;
1466 uint64_t pa;
1467 uint32_t size;
1468
1469 /* Verify configuration consistency */
1470 if (!vmxnet3_verify_driver_magic(s->drv_shmem)) {
1471 VMW_ERPRN("Device configuration received from driver is invalid");
1472 return;
1473 }
1474
1475 /* Verify if device is active */
1476 if (s->device_active) {
1477 VMW_CFPRN("Vmxnet3 device is active");
1478 return;
1479 }
1480
1481 vmxnet3_adjust_by_guest_type(s);
1482 vmxnet3_update_features(s);
1483 vmxnet3_update_pm_state(s);
1484 vmxnet3_setup_rx_filtering(s);
1485 /* Cache fields from shared memory */
1486 s->mtu = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.misc.mtu);
1487 VMW_CFPRN("MTU is %u", s->mtu);
1488
1489 s->max_rx_frags =
1490 VMXNET3_READ_DRV_SHARED16(s->drv_shmem, devRead.misc.maxNumRxSG);
1491
1492 if (s->max_rx_frags == 0) {
1493 s->max_rx_frags = 1;
1494 }
1495
1496 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1497
1498 s->event_int_idx =
1499 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.eventIntrIdx);
1500 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1501 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1502
1503 s->auto_int_masking =
1504 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.autoMask);
1505 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1506
1507 s->txq_num =
1508 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numTxQueues);
1509 s->rxq_num =
1510 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numRxQueues);
1511
1512 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1513 vmxnet3_validate_queues(s);
1514
1515 qdescr_table_pa =
1516 VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.misc.queueDescPA);
1517 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1518
1519 /*
1520 * Worst-case scenario is a packet that holds all TX rings space so
1521 * we calculate total size of all TX rings for max TX fragments number
1522 */
1523 s->max_tx_frags = 0;
1524
1525 /* TX queues */
1526 for (i = 0; i < s->txq_num; i++) {
1527 hwaddr qdescr_pa =
1528 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1529
1530 /* Read interrupt number for this TX queue */
1531 s->txq_descr[i].intr_idx =
1532 VMXNET3_READ_TX_QUEUE_DESCR8(qdescr_pa, conf.intrIdx);
1533 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1534
1535 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1536
1537 /* Read rings memory locations for TX queues */
1538 pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.txRingBasePA);
1539 size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.txRingSize);
1540
1541 vmxnet3_ring_init(&s->txq_descr[i].tx_ring, pa, size,
1542 sizeof(struct Vmxnet3_TxDesc), false);
1543 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1544
1545 s->max_tx_frags += size;
1546
1547 /* TXC ring */
1548 pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.compRingBasePA);
1549 size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.compRingSize);
1550 vmxnet3_ring_init(&s->txq_descr[i].comp_ring, pa, size,
1551 sizeof(struct Vmxnet3_TxCompDesc), true);
1552 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1553
1554 s->txq_descr[i].tx_stats_pa =
1555 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1556
1557 memset(&s->txq_descr[i].txq_stats, 0,
1558 sizeof(s->txq_descr[i].txq_stats));
1559
1560 /* Fill device-managed parameters for queues */
1561 VMXNET3_WRITE_TX_QUEUE_DESCR32(qdescr_pa,
1562 ctrl.txThreshold,
1563 VMXNET3_DEF_TX_THRESHOLD);
1564 }
1565
1566 /* Preallocate TX packet wrapper */
1567 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1568 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1569 s->max_tx_frags, s->peer_has_vhdr);
1570 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1571
1572 /* Read rings memory locations for RX queues */
1573 for (i = 0; i < s->rxq_num; i++) {
1574 int j;
1575 hwaddr qd_pa =
1576 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1577 i * sizeof(struct Vmxnet3_RxQueueDesc);
1578
1579 /* Read interrupt number for this RX queue */
1580 s->rxq_descr[i].intr_idx =
1581 VMXNET3_READ_TX_QUEUE_DESCR8(qd_pa, conf.intrIdx);
1582 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1583
1584 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1585
1586 /* Read rings memory locations */
1587 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1588 /* RX rings */
1589 pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.rxRingBasePA[j]);
1590 size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.rxRingSize[j]);
1591 vmxnet3_ring_init(&s->rxq_descr[i].rx_ring[j], pa, size,
1592 sizeof(struct Vmxnet3_RxDesc), false);
1593 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1594 i, j, pa, size);
1595 }
1596
1597 /* RXC ring */
1598 pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.compRingBasePA);
1599 size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.compRingSize);
1600 vmxnet3_ring_init(&s->rxq_descr[i].comp_ring, pa, size,
1601 sizeof(struct Vmxnet3_RxCompDesc), true);
1602 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1603
1604 s->rxq_descr[i].rx_stats_pa =
1605 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1606 memset(&s->rxq_descr[i].rxq_stats, 0,
1607 sizeof(s->rxq_descr[i].rxq_stats));
1608 }
1609
1610 vmxnet3_validate_interrupts(s);
1611
1612 /* Make sure everything is in place before device activation */
1613 smp_wmb();
1614
1615 vmxnet3_reset_mac(s);
1616
1617 s->device_active = true;
1618 }
1619
1620 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1621 {
1622 s->last_command = cmd;
1623
1624 switch (cmd) {
1625 case VMXNET3_CMD_GET_PERM_MAC_HI:
1626 VMW_CBPRN("Set: Get upper part of permanent MAC");
1627 break;
1628
1629 case VMXNET3_CMD_GET_PERM_MAC_LO:
1630 VMW_CBPRN("Set: Get lower part of permanent MAC");
1631 break;
1632
1633 case VMXNET3_CMD_GET_STATS:
1634 VMW_CBPRN("Set: Get device statistics");
1635 vmxnet3_fill_stats(s);
1636 break;
1637
1638 case VMXNET3_CMD_ACTIVATE_DEV:
1639 VMW_CBPRN("Set: Activating vmxnet3 device");
1640 vmxnet3_activate_device(s);
1641 break;
1642
1643 case VMXNET3_CMD_UPDATE_RX_MODE:
1644 VMW_CBPRN("Set: Update rx mode");
1645 vmxnet3_update_rx_mode(s);
1646 break;
1647
1648 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1649 VMW_CBPRN("Set: Update VLAN filters");
1650 vmxnet3_update_vlan_filters(s);
1651 break;
1652
1653 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1654 VMW_CBPRN("Set: Update MAC filters");
1655 vmxnet3_update_mcast_filters(s);
1656 break;
1657
1658 case VMXNET3_CMD_UPDATE_FEATURE:
1659 VMW_CBPRN("Set: Update features");
1660 vmxnet3_update_features(s);
1661 break;
1662
1663 case VMXNET3_CMD_UPDATE_PMCFG:
1664 VMW_CBPRN("Set: Update power management config");
1665 vmxnet3_update_pm_state(s);
1666 break;
1667
1668 case VMXNET3_CMD_GET_LINK:
1669 VMW_CBPRN("Set: Get link");
1670 break;
1671
1672 case VMXNET3_CMD_RESET_DEV:
1673 VMW_CBPRN("Set: Reset device");
1674 vmxnet3_reset(s);
1675 break;
1676
1677 case VMXNET3_CMD_QUIESCE_DEV:
1678 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1679 vmxnet3_deactivate_device(s);
1680 break;
1681
1682 case VMXNET3_CMD_GET_CONF_INTR:
1683 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1684 break;
1685
1686 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1687 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1688 "adaptive ring info flags");
1689 break;
1690
1691 case VMXNET3_CMD_GET_DID_LO:
1692 VMW_CBPRN("Set: Get lower part of device ID");
1693 break;
1694
1695 case VMXNET3_CMD_GET_DID_HI:
1696 VMW_CBPRN("Set: Get upper part of device ID");
1697 break;
1698
1699 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1700 VMW_CBPRN("Set: Get device extra info");
1701 break;
1702
1703 default:
1704 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1705 break;
1706 }
1707 }
1708
1709 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1710 {
1711 uint64_t ret;
1712
1713 switch (s->last_command) {
1714 case VMXNET3_CMD_ACTIVATE_DEV:
1715 ret = (s->device_active) ? 0 : 1;
1716 VMW_CFPRN("Device active: %" PRIx64, ret);
1717 break;
1718
1719 case VMXNET3_CMD_RESET_DEV:
1720 case VMXNET3_CMD_QUIESCE_DEV:
1721 case VMXNET3_CMD_GET_QUEUE_STATUS:
1722 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1723 ret = 0;
1724 break;
1725
1726 case VMXNET3_CMD_GET_LINK:
1727 ret = s->link_status_and_speed;
1728 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1729 break;
1730
1731 case VMXNET3_CMD_GET_PERM_MAC_LO:
1732 ret = vmxnet3_get_mac_low(&s->perm_mac);
1733 break;
1734
1735 case VMXNET3_CMD_GET_PERM_MAC_HI:
1736 ret = vmxnet3_get_mac_high(&s->perm_mac);
1737 break;
1738
1739 case VMXNET3_CMD_GET_CONF_INTR:
1740 ret = vmxnet3_get_interrupt_config(s);
1741 break;
1742
1743 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1744 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1745 break;
1746
1747 case VMXNET3_CMD_GET_DID_LO:
1748 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1749 break;
1750
1751 case VMXNET3_CMD_GET_DID_HI:
1752 ret = VMXNET3_DEVICE_REVISION;
1753 break;
1754
1755 default:
1756 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1757 ret = 0;
1758 break;
1759 }
1760
1761 return ret;
1762 }
1763
1764 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1765 {
1766 uint32_t events;
1767
1768 VMW_CBPRN("Setting events: 0x%x", val);
1769 events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) | val;
1770 VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
1771 }
1772
1773 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1774 {
1775 uint32_t events;
1776
1777 VMW_CBPRN("Clearing events: 0x%x", val);
1778 events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) & ~val;
1779 VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
1780 }
1781
1782 static void
1783 vmxnet3_io_bar1_write(void *opaque,
1784 hwaddr addr,
1785 uint64_t val,
1786 unsigned size)
1787 {
1788 VMXNET3State *s = opaque;
1789
1790 switch (addr) {
1791 /* Vmxnet3 Revision Report Selection */
1792 case VMXNET3_REG_VRRS:
1793 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1794 val, size);
1795 break;
1796
1797 /* UPT Version Report Selection */
1798 case VMXNET3_REG_UVRS:
1799 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1800 val, size);
1801 break;
1802
1803 /* Driver Shared Address Low */
1804 case VMXNET3_REG_DSAL:
1805 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1806 val, size);
1807 /*
1808 * Guest driver will first write the low part of the shared
1809 * memory address. We save it to temp variable and set the
1810 * shared address only after we get the high part
1811 */
1812 if (val == 0) {
1813 vmxnet3_deactivate_device(s);
1814 }
1815 s->temp_shared_guest_driver_memory = val;
1816 s->drv_shmem = 0;
1817 break;
1818
1819 /* Driver Shared Address High */
1820 case VMXNET3_REG_DSAH:
1821 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1822 val, size);
1823 /*
1824 * Set the shared memory between guest driver and device.
1825 * We already should have low address part.
1826 */
1827 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1828 break;
1829
1830 /* Command */
1831 case VMXNET3_REG_CMD:
1832 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1833 val, size);
1834 vmxnet3_handle_command(s, val);
1835 break;
1836
1837 /* MAC Address Low */
1838 case VMXNET3_REG_MACL:
1839 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1840 val, size);
1841 s->temp_mac = val;
1842 break;
1843
1844 /* MAC Address High */
1845 case VMXNET3_REG_MACH:
1846 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1847 val, size);
1848 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1849 break;
1850
1851 /* Interrupt Cause Register */
1852 case VMXNET3_REG_ICR:
1853 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1854 val, size);
1855 g_assert_not_reached();
1856 break;
1857
1858 /* Event Cause Register */
1859 case VMXNET3_REG_ECR:
1860 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1861 val, size);
1862 vmxnet3_ack_events(s, val);
1863 break;
1864
1865 default:
1866 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1867 addr, val, size);
1868 break;
1869 }
1870 }
1871
1872 static uint64_t
1873 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1874 {
1875 VMXNET3State *s = opaque;
1876 uint64_t ret = 0;
1877
1878 switch (addr) {
1879 /* Vmxnet3 Revision Report Selection */
1880 case VMXNET3_REG_VRRS:
1881 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1882 ret = VMXNET3_DEVICE_REVISION;
1883 break;
1884
1885 /* UPT Version Report Selection */
1886 case VMXNET3_REG_UVRS:
1887 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1888 ret = VMXNET3_UPT_REVISION;
1889 break;
1890
1891 /* Command */
1892 case VMXNET3_REG_CMD:
1893 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1894 ret = vmxnet3_get_command_status(s);
1895 break;
1896
1897 /* MAC Address Low */
1898 case VMXNET3_REG_MACL:
1899 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1900 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1901 break;
1902
1903 /* MAC Address High */
1904 case VMXNET3_REG_MACH:
1905 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1906 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1907 break;
1908
1909 /*
1910 * Interrupt Cause Register
1911 * Used for legacy interrupts only so interrupt index always 0
1912 */
1913 case VMXNET3_REG_ICR:
1914 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1915 if (vmxnet3_interrupt_asserted(s, 0)) {
1916 vmxnet3_clear_interrupt(s, 0);
1917 ret = true;
1918 } else {
1919 ret = false;
1920 }
1921 break;
1922
1923 default:
1924 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1925 break;
1926 }
1927
1928 return ret;
1929 }
1930
1931 static int
1932 vmxnet3_can_receive(NetClientState *nc)
1933 {
1934 VMXNET3State *s = qemu_get_nic_opaque(nc);
1935 return s->device_active &&
1936 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1937 }
1938
1939 static inline bool
1940 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1941 {
1942 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1943 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1944 return true;
1945 }
1946
1947 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1948 }
1949
1950 static bool
1951 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1952 {
1953 int i;
1954 for (i = 0; i < s->mcast_list_len; i++) {
1955 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1956 return true;
1957 }
1958 }
1959 return false;
1960 }
1961
1962 static bool
1963 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1964 size_t size)
1965 {
1966 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1967
1968 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1969 return true;
1970 }
1971
1972 if (!vmxnet3_is_registered_vlan(s, data)) {
1973 return false;
1974 }
1975
1976 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1977 case ETH_PKT_UCAST:
1978 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1979 return false;
1980 }
1981 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1982 return false;
1983 }
1984 break;
1985
1986 case ETH_PKT_BCAST:
1987 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
1988 return false;
1989 }
1990 break;
1991
1992 case ETH_PKT_MCAST:
1993 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
1994 return true;
1995 }
1996 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
1997 return false;
1998 }
1999 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
2000 return false;
2001 }
2002 break;
2003
2004 default:
2005 g_assert_not_reached();
2006 }
2007
2008 return true;
2009 }
2010
2011 static ssize_t
2012 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
2013 {
2014 VMXNET3State *s = qemu_get_nic_opaque(nc);
2015 size_t bytes_indicated;
2016 uint8_t min_buf[MIN_BUF_SIZE];
2017
2018 if (!vmxnet3_can_receive(nc)) {
2019 VMW_PKPRN("Cannot receive now");
2020 return -1;
2021 }
2022
2023 if (s->peer_has_vhdr) {
2024 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
2025 buf += sizeof(struct virtio_net_hdr);
2026 size -= sizeof(struct virtio_net_hdr);
2027 }
2028
2029 /* Pad to minimum Ethernet frame length */
2030 if (size < sizeof(min_buf)) {
2031 memcpy(min_buf, buf, size);
2032 memset(&min_buf[size], 0, sizeof(min_buf) - size);
2033 buf = min_buf;
2034 size = sizeof(min_buf);
2035 }
2036
2037 net_rx_pkt_set_packet_type(s->rx_pkt,
2038 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
2039
2040 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2041 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
2042 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2043 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2044 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2045 if (bytes_indicated < size) {
2046 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2047 }
2048 } else {
2049 VMW_PKPRN("Packet dropped by RX filter");
2050 bytes_indicated = size;
2051 }
2052
2053 assert(size > 0);
2054 assert(bytes_indicated != 0);
2055 return bytes_indicated;
2056 }
2057
2058 static void vmxnet3_set_link_status(NetClientState *nc)
2059 {
2060 VMXNET3State *s = qemu_get_nic_opaque(nc);
2061
2062 if (nc->link_down) {
2063 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2064 } else {
2065 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2066 }
2067
2068 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2069 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2070 }
2071
2072 static NetClientInfo net_vmxnet3_info = {
2073 .type = NET_CLIENT_OPTIONS_KIND_NIC,
2074 .size = sizeof(NICState),
2075 .receive = vmxnet3_receive,
2076 .link_status_changed = vmxnet3_set_link_status,
2077 };
2078
2079 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2080 {
2081 NetClientState *nc = qemu_get_queue(s->nic);
2082
2083 if (qemu_has_vnet_hdr(nc->peer)) {
2084 return true;
2085 }
2086
2087 return false;
2088 }
2089
2090 static void vmxnet3_net_uninit(VMXNET3State *s)
2091 {
2092 g_free(s->mcast_list);
2093 vmxnet3_deactivate_device(s);
2094 qemu_del_nic(s->nic);
2095 }
2096
2097 static void vmxnet3_net_init(VMXNET3State *s)
2098 {
2099 DeviceState *d = DEVICE(s);
2100
2101 VMW_CBPRN("vmxnet3_net_init called...");
2102
2103 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2104
2105 /* Windows guest will query the address that was set on init */
2106 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2107
2108 s->mcast_list = NULL;
2109 s->mcast_list_len = 0;
2110
2111 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2112
2113 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2114
2115 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2116 object_get_typename(OBJECT(s)),
2117 d->id, s);
2118
2119 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2120 s->tx_sop = true;
2121 s->skip_current_tx_pkt = false;
2122 s->tx_pkt = NULL;
2123 s->rx_pkt = NULL;
2124 s->rx_vlan_stripping = false;
2125 s->lro_supported = false;
2126
2127 if (s->peer_has_vhdr) {
2128 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2129 sizeof(struct virtio_net_hdr));
2130
2131 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2132 }
2133
2134 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2135 }
2136
2137 static void
2138 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2139 {
2140 PCIDevice *d = PCI_DEVICE(s);
2141 int i;
2142 for (i = 0; i < num_vectors; i++) {
2143 msix_vector_unuse(d, i);
2144 }
2145 }
2146
2147 static bool
2148 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2149 {
2150 PCIDevice *d = PCI_DEVICE(s);
2151 int i;
2152 for (i = 0; i < num_vectors; i++) {
2153 int res = msix_vector_use(d, i);
2154 if (0 > res) {
2155 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2156 vmxnet3_unuse_msix_vectors(s, i);
2157 return false;
2158 }
2159 }
2160 return true;
2161 }
2162
2163 static bool
2164 vmxnet3_init_msix(VMXNET3State *s)
2165 {
2166 PCIDevice *d = PCI_DEVICE(s);
2167 int res = msix_init(d, VMXNET3_MAX_INTRS,
2168 &s->msix_bar,
2169 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2170 &s->msix_bar,
2171 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2172 VMXNET3_MSIX_OFFSET(s));
2173
2174 if (0 > res) {
2175 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2176 s->msix_used = false;
2177 } else {
2178 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2179 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2180 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2181 s->msix_used = false;
2182 } else {
2183 s->msix_used = true;
2184 }
2185 }
2186 return s->msix_used;
2187 }
2188
2189 static void
2190 vmxnet3_cleanup_msix(VMXNET3State *s)
2191 {
2192 PCIDevice *d = PCI_DEVICE(s);
2193
2194 if (s->msix_used) {
2195 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2196 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2197 }
2198 }
2199
2200 #define VMXNET3_USE_64BIT (true)
2201 #define VMXNET3_PER_VECTOR_MASK (false)
2202
2203 static bool
2204 vmxnet3_init_msi(VMXNET3State *s)
2205 {
2206 PCIDevice *d = PCI_DEVICE(s);
2207 int res;
2208
2209 res = msi_init(d, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2210 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK);
2211 if (0 > res) {
2212 VMW_WRPRN("Failed to initialize MSI, error %d", res);
2213 s->msi_used = false;
2214 } else {
2215 s->msi_used = true;
2216 }
2217
2218 return s->msi_used;
2219 }
2220
2221 static void
2222 vmxnet3_cleanup_msi(VMXNET3State *s)
2223 {
2224 PCIDevice *d = PCI_DEVICE(s);
2225
2226 if (s->msi_used) {
2227 msi_uninit(d);
2228 }
2229 }
2230
2231 static void
2232 vmxnet3_msix_save(QEMUFile *f, void *opaque)
2233 {
2234 PCIDevice *d = PCI_DEVICE(opaque);
2235 msix_save(d, f);
2236 }
2237
2238 static int
2239 vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
2240 {
2241 PCIDevice *d = PCI_DEVICE(opaque);
2242 msix_load(d, f);
2243 return 0;
2244 }
2245
2246 static const MemoryRegionOps b0_ops = {
2247 .read = vmxnet3_io_bar0_read,
2248 .write = vmxnet3_io_bar0_write,
2249 .endianness = DEVICE_LITTLE_ENDIAN,
2250 .impl = {
2251 .min_access_size = 4,
2252 .max_access_size = 4,
2253 },
2254 };
2255
2256 static const MemoryRegionOps b1_ops = {
2257 .read = vmxnet3_io_bar1_read,
2258 .write = vmxnet3_io_bar1_write,
2259 .endianness = DEVICE_LITTLE_ENDIAN,
2260 .impl = {
2261 .min_access_size = 4,
2262 .max_access_size = 4,
2263 },
2264 };
2265
2266 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2267 {
2268 uint64_t dsn_payload;
2269 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2270
2271 dsnp[0] = 0xfe;
2272 dsnp[1] = s->conf.macaddr.a[3];
2273 dsnp[2] = s->conf.macaddr.a[4];
2274 dsnp[3] = s->conf.macaddr.a[5];
2275 dsnp[4] = s->conf.macaddr.a[0];
2276 dsnp[5] = s->conf.macaddr.a[1];
2277 dsnp[6] = s->conf.macaddr.a[2];
2278 dsnp[7] = 0xff;
2279 return dsn_payload;
2280 }
2281
2282 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2283 {
2284 DeviceState *dev = DEVICE(pci_dev);
2285 VMXNET3State *s = VMXNET3(pci_dev);
2286
2287 VMW_CBPRN("Starting init...");
2288
2289 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2290 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2291 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2292 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2293
2294 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2295 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2296 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2297 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2298
2299 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2300 VMXNET3_MSIX_BAR_SIZE);
2301 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2302 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2303
2304 vmxnet3_reset_interrupt_states(s);
2305
2306 /* Interrupt pin A */
2307 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2308
2309 if (!vmxnet3_init_msix(s)) {
2310 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2311 }
2312
2313 if (!vmxnet3_init_msi(s)) {
2314 VMW_WRPRN("Failed to initialize MSI, configuration is inconsistent.");
2315 }
2316
2317 vmxnet3_net_init(s);
2318
2319 if (pci_is_express(pci_dev)) {
2320 if (pci_bus_is_express(pci_dev->bus)) {
2321 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2322 }
2323
2324 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2325 vmxnet3_device_serial_num(s));
2326 }
2327
2328 register_savevm(dev, "vmxnet3-msix", -1, 1,
2329 vmxnet3_msix_save, vmxnet3_msix_load, s);
2330 }
2331
2332 static void vmxnet3_instance_init(Object *obj)
2333 {
2334 VMXNET3State *s = VMXNET3(obj);
2335 device_add_bootindex_property(obj, &s->conf.bootindex,
2336 "bootindex", "/ethernet-phy@0",
2337 DEVICE(obj), NULL);
2338 }
2339
2340 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2341 {
2342 DeviceState *dev = DEVICE(pci_dev);
2343 VMXNET3State *s = VMXNET3(pci_dev);
2344
2345 VMW_CBPRN("Starting uninit...");
2346
2347 unregister_savevm(dev, "vmxnet3-msix", s);
2348
2349 vmxnet3_net_uninit(s);
2350
2351 vmxnet3_cleanup_msix(s);
2352
2353 vmxnet3_cleanup_msi(s);
2354 }
2355
2356 static void vmxnet3_qdev_reset(DeviceState *dev)
2357 {
2358 PCIDevice *d = PCI_DEVICE(dev);
2359 VMXNET3State *s = VMXNET3(d);
2360
2361 VMW_CBPRN("Starting QDEV reset...");
2362 vmxnet3_reset(s);
2363 }
2364
2365 static bool vmxnet3_mc_list_needed(void *opaque)
2366 {
2367 return true;
2368 }
2369
2370 static int vmxnet3_mcast_list_pre_load(void *opaque)
2371 {
2372 VMXNET3State *s = opaque;
2373
2374 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2375
2376 return 0;
2377 }
2378
2379
2380 static void vmxnet3_pre_save(void *opaque)
2381 {
2382 VMXNET3State *s = opaque;
2383
2384 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2385 }
2386
2387 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2388 .name = "vmxnet3/mcast_list",
2389 .version_id = 1,
2390 .minimum_version_id = 1,
2391 .pre_load = vmxnet3_mcast_list_pre_load,
2392 .needed = vmxnet3_mc_list_needed,
2393 .fields = (VMStateField[]) {
2394 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL, 0,
2395 mcast_list_buff_size),
2396 VMSTATE_END_OF_LIST()
2397 }
2398 };
2399
2400 static void vmxnet3_get_ring_from_file(QEMUFile *f, Vmxnet3Ring *r)
2401 {
2402 r->pa = qemu_get_be64(f);
2403 r->size = qemu_get_be32(f);
2404 r->cell_size = qemu_get_be32(f);
2405 r->next = qemu_get_be32(f);
2406 r->gen = qemu_get_byte(f);
2407 }
2408
2409 static void vmxnet3_put_ring_to_file(QEMUFile *f, Vmxnet3Ring *r)
2410 {
2411 qemu_put_be64(f, r->pa);
2412 qemu_put_be32(f, r->size);
2413 qemu_put_be32(f, r->cell_size);
2414 qemu_put_be32(f, r->next);
2415 qemu_put_byte(f, r->gen);
2416 }
2417
2418 static void vmxnet3_get_tx_stats_from_file(QEMUFile *f,
2419 struct UPT1_TxStats *tx_stat)
2420 {
2421 tx_stat->TSOPktsTxOK = qemu_get_be64(f);
2422 tx_stat->TSOBytesTxOK = qemu_get_be64(f);
2423 tx_stat->ucastPktsTxOK = qemu_get_be64(f);
2424 tx_stat->ucastBytesTxOK = qemu_get_be64(f);
2425 tx_stat->mcastPktsTxOK = qemu_get_be64(f);
2426 tx_stat->mcastBytesTxOK = qemu_get_be64(f);
2427 tx_stat->bcastPktsTxOK = qemu_get_be64(f);
2428 tx_stat->bcastBytesTxOK = qemu_get_be64(f);
2429 tx_stat->pktsTxError = qemu_get_be64(f);
2430 tx_stat->pktsTxDiscard = qemu_get_be64(f);
2431 }
2432
2433 static void vmxnet3_put_tx_stats_to_file(QEMUFile *f,
2434 struct UPT1_TxStats *tx_stat)
2435 {
2436 qemu_put_be64(f, tx_stat->TSOPktsTxOK);
2437 qemu_put_be64(f, tx_stat->TSOBytesTxOK);
2438 qemu_put_be64(f, tx_stat->ucastPktsTxOK);
2439 qemu_put_be64(f, tx_stat->ucastBytesTxOK);
2440 qemu_put_be64(f, tx_stat->mcastPktsTxOK);
2441 qemu_put_be64(f, tx_stat->mcastBytesTxOK);
2442 qemu_put_be64(f, tx_stat->bcastPktsTxOK);
2443 qemu_put_be64(f, tx_stat->bcastBytesTxOK);
2444 qemu_put_be64(f, tx_stat->pktsTxError);
2445 qemu_put_be64(f, tx_stat->pktsTxDiscard);
2446 }
2447
2448 static int vmxnet3_get_txq_descr(QEMUFile *f, void *pv, size_t size)
2449 {
2450 Vmxnet3TxqDescr *r = pv;
2451
2452 vmxnet3_get_ring_from_file(f, &r->tx_ring);
2453 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2454 r->intr_idx = qemu_get_byte(f);
2455 r->tx_stats_pa = qemu_get_be64(f);
2456
2457 vmxnet3_get_tx_stats_from_file(f, &r->txq_stats);
2458
2459 return 0;
2460 }
2461
2462 static void vmxnet3_put_txq_descr(QEMUFile *f, void *pv, size_t size)
2463 {
2464 Vmxnet3TxqDescr *r = pv;
2465
2466 vmxnet3_put_ring_to_file(f, &r->tx_ring);
2467 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2468 qemu_put_byte(f, r->intr_idx);
2469 qemu_put_be64(f, r->tx_stats_pa);
2470 vmxnet3_put_tx_stats_to_file(f, &r->txq_stats);
2471 }
2472
2473 static const VMStateInfo txq_descr_info = {
2474 .name = "txq_descr",
2475 .get = vmxnet3_get_txq_descr,
2476 .put = vmxnet3_put_txq_descr
2477 };
2478
2479 static void vmxnet3_get_rx_stats_from_file(QEMUFile *f,
2480 struct UPT1_RxStats *rx_stat)
2481 {
2482 rx_stat->LROPktsRxOK = qemu_get_be64(f);
2483 rx_stat->LROBytesRxOK = qemu_get_be64(f);
2484 rx_stat->ucastPktsRxOK = qemu_get_be64(f);
2485 rx_stat->ucastBytesRxOK = qemu_get_be64(f);
2486 rx_stat->mcastPktsRxOK = qemu_get_be64(f);
2487 rx_stat->mcastBytesRxOK = qemu_get_be64(f);
2488 rx_stat->bcastPktsRxOK = qemu_get_be64(f);
2489 rx_stat->bcastBytesRxOK = qemu_get_be64(f);
2490 rx_stat->pktsRxOutOfBuf = qemu_get_be64(f);
2491 rx_stat->pktsRxError = qemu_get_be64(f);
2492 }
2493
2494 static void vmxnet3_put_rx_stats_to_file(QEMUFile *f,
2495 struct UPT1_RxStats *rx_stat)
2496 {
2497 qemu_put_be64(f, rx_stat->LROPktsRxOK);
2498 qemu_put_be64(f, rx_stat->LROBytesRxOK);
2499 qemu_put_be64(f, rx_stat->ucastPktsRxOK);
2500 qemu_put_be64(f, rx_stat->ucastBytesRxOK);
2501 qemu_put_be64(f, rx_stat->mcastPktsRxOK);
2502 qemu_put_be64(f, rx_stat->mcastBytesRxOK);
2503 qemu_put_be64(f, rx_stat->bcastPktsRxOK);
2504 qemu_put_be64(f, rx_stat->bcastBytesRxOK);
2505 qemu_put_be64(f, rx_stat->pktsRxOutOfBuf);
2506 qemu_put_be64(f, rx_stat->pktsRxError);
2507 }
2508
2509 static int vmxnet3_get_rxq_descr(QEMUFile *f, void *pv, size_t size)
2510 {
2511 Vmxnet3RxqDescr *r = pv;
2512 int i;
2513
2514 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2515 vmxnet3_get_ring_from_file(f, &r->rx_ring[i]);
2516 }
2517
2518 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2519 r->intr_idx = qemu_get_byte(f);
2520 r->rx_stats_pa = qemu_get_be64(f);
2521
2522 vmxnet3_get_rx_stats_from_file(f, &r->rxq_stats);
2523
2524 return 0;
2525 }
2526
2527 static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size)
2528 {
2529 Vmxnet3RxqDescr *r = pv;
2530 int i;
2531
2532 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2533 vmxnet3_put_ring_to_file(f, &r->rx_ring[i]);
2534 }
2535
2536 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2537 qemu_put_byte(f, r->intr_idx);
2538 qemu_put_be64(f, r->rx_stats_pa);
2539 vmxnet3_put_rx_stats_to_file(f, &r->rxq_stats);
2540 }
2541
2542 static int vmxnet3_post_load(void *opaque, int version_id)
2543 {
2544 VMXNET3State *s = opaque;
2545 PCIDevice *d = PCI_DEVICE(s);
2546
2547 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2548 s->max_tx_frags, s->peer_has_vhdr);
2549 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2550
2551 if (s->msix_used) {
2552 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2553 VMW_WRPRN("Failed to re-use MSI-X vectors");
2554 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2555 s->msix_used = false;
2556 return -1;
2557 }
2558 }
2559
2560 vmxnet3_validate_queues(s);
2561 vmxnet3_validate_interrupts(s);
2562
2563 return 0;
2564 }
2565
2566 static const VMStateInfo rxq_descr_info = {
2567 .name = "rxq_descr",
2568 .get = vmxnet3_get_rxq_descr,
2569 .put = vmxnet3_put_rxq_descr
2570 };
2571
2572 static int vmxnet3_get_int_state(QEMUFile *f, void *pv, size_t size)
2573 {
2574 Vmxnet3IntState *r = pv;
2575
2576 r->is_masked = qemu_get_byte(f);
2577 r->is_pending = qemu_get_byte(f);
2578 r->is_asserted = qemu_get_byte(f);
2579
2580 return 0;
2581 }
2582
2583 static void vmxnet3_put_int_state(QEMUFile *f, void *pv, size_t size)
2584 {
2585 Vmxnet3IntState *r = pv;
2586
2587 qemu_put_byte(f, r->is_masked);
2588 qemu_put_byte(f, r->is_pending);
2589 qemu_put_byte(f, r->is_asserted);
2590 }
2591
2592 static const VMStateInfo int_state_info = {
2593 .name = "int_state",
2594 .get = vmxnet3_get_int_state,
2595 .put = vmxnet3_put_int_state
2596 };
2597
2598 static bool vmxnet3_vmstate_need_pcie_device(void *opaque)
2599 {
2600 VMXNET3State *s = VMXNET3(opaque);
2601
2602 return !(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE);
2603 }
2604
2605 static bool vmxnet3_vmstate_test_pci_device(void *opaque, int version_id)
2606 {
2607 return !vmxnet3_vmstate_need_pcie_device(opaque);
2608 }
2609
2610 static const VMStateDescription vmstate_vmxnet3_pcie_device = {
2611 .name = "vmxnet3/pcie",
2612 .version_id = 1,
2613 .minimum_version_id = 1,
2614 .needed = vmxnet3_vmstate_need_pcie_device,
2615 .fields = (VMStateField[]) {
2616 VMSTATE_PCIE_DEVICE(parent_obj, VMXNET3State),
2617 VMSTATE_END_OF_LIST()
2618 }
2619 };
2620
2621 static const VMStateDescription vmstate_vmxnet3 = {
2622 .name = "vmxnet3",
2623 .version_id = 1,
2624 .minimum_version_id = 1,
2625 .pre_save = vmxnet3_pre_save,
2626 .post_load = vmxnet3_post_load,
2627 .fields = (VMStateField[]) {
2628 VMSTATE_STRUCT_TEST(parent_obj, VMXNET3State,
2629 vmxnet3_vmstate_test_pci_device, 0,
2630 vmstate_pci_device, PCIDevice),
2631 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2632 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2633 VMSTATE_BOOL(lro_supported, VMXNET3State),
2634 VMSTATE_UINT32(rx_mode, VMXNET3State),
2635 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2636 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2637 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2638 VMSTATE_UINT32(mtu, VMXNET3State),
2639 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2640 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2641 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2642 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2643 VMSTATE_UINT8(txq_num, VMXNET3State),
2644 VMSTATE_UINT8(rxq_num, VMXNET3State),
2645 VMSTATE_UINT32(device_active, VMXNET3State),
2646 VMSTATE_UINT32(last_command, VMXNET3State),
2647 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2648 VMSTATE_UINT32(temp_mac, VMXNET3State),
2649 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2650 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2651
2652 VMSTATE_ARRAY(txq_descr, VMXNET3State,
2653 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, txq_descr_info,
2654 Vmxnet3TxqDescr),
2655 VMSTATE_ARRAY(rxq_descr, VMXNET3State,
2656 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, rxq_descr_info,
2657 Vmxnet3RxqDescr),
2658 VMSTATE_ARRAY(interrupt_states, VMXNET3State, VMXNET3_MAX_INTRS,
2659 0, int_state_info, Vmxnet3IntState),
2660
2661 VMSTATE_END_OF_LIST()
2662 },
2663 .subsections = (const VMStateDescription*[]) {
2664 &vmxstate_vmxnet3_mcast_list,
2665 &vmstate_vmxnet3_pcie_device,
2666 NULL
2667 }
2668 };
2669
2670 static Property vmxnet3_properties[] = {
2671 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2672 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2673 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2674 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2675 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2676 DEFINE_PROP_END_OF_LIST(),
2677 };
2678
2679 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2680 {
2681 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2682 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2683 VMXNET3State *s = VMXNET3(qdev);
2684
2685 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2686 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2687 }
2688
2689 vc->parent_dc_realize(qdev, errp);
2690 }
2691
2692 static void vmxnet3_class_init(ObjectClass *class, void *data)
2693 {
2694 DeviceClass *dc = DEVICE_CLASS(class);
2695 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2696 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2697
2698 c->realize = vmxnet3_pci_realize;
2699 c->exit = vmxnet3_pci_uninit;
2700 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2701 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2702 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2703 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2704 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2705 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2706 vc->parent_dc_realize = dc->realize;
2707 dc->realize = vmxnet3_realize;
2708 dc->desc = "VMWare Paravirtualized Ethernet v3";
2709 dc->reset = vmxnet3_qdev_reset;
2710 dc->vmsd = &vmstate_vmxnet3;
2711 dc->props = vmxnet3_properties;
2712 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2713 }
2714
2715 static const TypeInfo vmxnet3_info = {
2716 .name = TYPE_VMXNET3,
2717 .parent = TYPE_PCI_DEVICE,
2718 .class_size = sizeof(VMXNET3Class),
2719 .instance_size = sizeof(VMXNET3State),
2720 .class_init = vmxnet3_class_init,
2721 .instance_init = vmxnet3_instance_init,
2722 };
2723
2724 static void vmxnet3_register_types(void)
2725 {
2726 VMW_CBPRN("vmxnet3_register_types called...");
2727 type_register_static(&vmxnet3_info);
2728 }
2729
2730 type_init(vmxnet3_register_types)
AR7 emulation for QEMU