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qcow2: manually add more coroutine_fn annotations
[qemu.git] / hw / net / vmxnet3.c
blob0b7acf7f895b0625b0f39cec440e64405fc13f10
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 "hw/qdev-properties.h"
22 #include "net/tap.h"
23 #include "net/checksum.h"
24 #include "sysemu/sysemu.h"
25 #include "qemu/bswap.h"
26 #include "qemu/log.h"
27 #include "qemu/module.h"
28 #include "hw/pci/msix.h"
29 #include "hw/pci/msi.h"
30 #include "migration/register.h"
31 #include "migration/vmstate.h"
32
33 #include "vmxnet3.h"
34 #include "vmxnet3_defs.h"
35 #include "vmxnet_debug.h"
36 #include "vmware_utils.h"
37 #include "net_tx_pkt.h"
38 #include "net_rx_pkt.h"
39 #include "qom/object.h"
40
41 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
42 #define VMXNET3_MSIX_BAR_SIZE 0x2000
43 #define MIN_BUF_SIZE 60
44
45 /* Compatibility flags for migration */
46 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
47 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
48 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
49 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
50 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
51 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
52
53 #define VMXNET3_EXP_EP_OFFSET (0x48)
54 #define VMXNET3_MSI_OFFSET(s) \
55 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
56 #define VMXNET3_MSIX_OFFSET(s) \
57 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
58 #define VMXNET3_DSN_OFFSET (0x100)
59
60 #define VMXNET3_BAR0_IDX (0)
61 #define VMXNET3_BAR1_IDX (1)
62 #define VMXNET3_MSIX_BAR_IDX (2)
63
64 #define VMXNET3_OFF_MSIX_TABLE (0x000)
65 #define VMXNET3_OFF_MSIX_PBA(s) \
66 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
67
68 /* Link speed in Mbps should be shifted by 16 */
69 #define VMXNET3_LINK_SPEED (1000 << 16)
70
71 /* Link status: 1 - up, 0 - down. */
72 #define VMXNET3_LINK_STATUS_UP 0x1
73
74 /* Least significant bit should be set for revision and version */
75 #define VMXNET3_UPT_REVISION 0x1
76 #define VMXNET3_DEVICE_REVISION 0x1
77
78 /* Number of interrupt vectors for non-MSIx modes */
79 #define VMXNET3_MAX_NMSIX_INTRS (1)
80
81 /* Macros for rings descriptors access */
82 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
83 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
84
85 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
86 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
87
88 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
89 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
90
91 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
92 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
93
94 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
95 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
96
97 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
98 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
99
100 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
101 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
102
103 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
104 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
105
106 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
107 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
108
109 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
110 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
111
112 /* Macros for guest driver shared area access */
113 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
114 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
115
116 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
117 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
118
119 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
120 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
121
122 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
123 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
124
125 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
126 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
127
128 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
129 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
130
131 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
132
133 struct VMXNET3Class {
134 PCIDeviceClass parent_class;
135 DeviceRealize parent_dc_realize;
136 };
137 typedef struct VMXNET3Class VMXNET3Class;
138
139 DECLARE_CLASS_CHECKERS(VMXNET3Class, VMXNET3_DEVICE,
140 TYPE_VMXNET3)
141
142 static inline void vmxnet3_ring_init(PCIDevice *d,
143 Vmxnet3Ring *ring,
144 hwaddr pa,
145 uint32_t size,
146 uint32_t cell_size,
147 bool zero_region)
148 {
149 ring->pa = pa;
150 ring->size = size;
151 ring->cell_size = cell_size;
152 ring->gen = VMXNET3_INIT_GEN;
153 ring->next = 0;
154
155 if (zero_region) {
156 vmw_shmem_set(d, pa, 0, size * cell_size);
157 }
158 }
159
160 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
161 macro("%s#%d: base %" PRIx64 " size %u cell_size %u gen %d next %u", \
162 (ring_name), (ridx), \
163 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
164
165 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
166 {
167 if (++ring->next >= ring->size) {
168 ring->next = 0;
169 ring->gen ^= 1;
170 }
171 }
172
173 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
174 {
175 if (ring->next-- == 0) {
176 ring->next = ring->size - 1;
177 ring->gen ^= 1;
178 }
179 }
180
181 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
182 {
183 return ring->pa + ring->next * ring->cell_size;
184 }
185
186 static inline void vmxnet3_ring_read_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
187 void *buff)
188 {
189 vmw_shmem_read(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
190 }
191
192 static inline void vmxnet3_ring_write_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
193 void *buff)
194 {
195 vmw_shmem_write(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
196 }
197
198 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
199 {
200 return ring->next;
201 }
202
203 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
204 {
205 return ring->gen;
206 }
207
208 /* Debug trace-related functions */
209 static inline void
210 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
211 {
212 VMW_PKPRN("TX DESCR: "
213 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
214 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
215 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
216 descr->addr, descr->len, descr->gen, descr->rsvd,
217 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
218 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
219 }
220
221 static inline void
222 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
223 {
224 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
225 "csum_start: %d, csum_offset: %d",
226 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
227 vhdr->csum_start, vhdr->csum_offset);
228 }
229
230 static inline void
231 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
232 {
233 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
234 "dtype: %d, ext1: %d, btype: %d",
235 descr->addr, descr->len, descr->gen,
236 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
237 }
238
239 /* Interrupt management */
240
241 /*
242 * This function returns sign whether interrupt line is in asserted state
243 * This depends on the type of interrupt used. For INTX interrupt line will
244 * be asserted until explicit deassertion, for MSI(X) interrupt line will
245 * be deasserted automatically due to notification semantics of the MSI(X)
246 * interrupts
247 */
248 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
249 {
250 PCIDevice *d = PCI_DEVICE(s);
251
252 if (s->msix_used && msix_enabled(d)) {
253 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
254 msix_notify(d, int_idx);
255 return false;
256 }
257 if (msi_enabled(d)) {
258 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
259 msi_notify(d, int_idx);
260 return false;
261 }
262
263 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
264 pci_irq_assert(d);
265 return true;
266 }
267
268 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
269 {
270 PCIDevice *d = PCI_DEVICE(s);
271
272 /*
273 * This function should never be called for MSI(X) interrupts
274 * because deassertion never required for message interrupts
275 */
276 assert(!s->msix_used || !msix_enabled(d));
277 /*
278 * This function should never be called for MSI(X) interrupts
279 * because deassertion never required for message interrupts
280 */
281 assert(!msi_enabled(d));
282
283 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
284 pci_irq_deassert(d);
285 }
286
287 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
288 {
289 if (!s->interrupt_states[lidx].is_pending &&
290 s->interrupt_states[lidx].is_asserted) {
291 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
292 _vmxnet3_deassert_interrupt_line(s, lidx);
293 s->interrupt_states[lidx].is_asserted = false;
294 return;
295 }
296
297 if (s->interrupt_states[lidx].is_pending &&
298 !s->interrupt_states[lidx].is_masked &&
299 !s->interrupt_states[lidx].is_asserted) {
300 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
301 s->interrupt_states[lidx].is_asserted =
302 _vmxnet3_assert_interrupt_line(s, lidx);
303 s->interrupt_states[lidx].is_pending = false;
304 return;
305 }
306 }
307
308 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
309 {
310 PCIDevice *d = PCI_DEVICE(s);
311 s->interrupt_states[lidx].is_pending = true;
312 vmxnet3_update_interrupt_line_state(s, lidx);
313
314 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
315 goto do_automask;
316 }
317
318 if (msi_enabled(d) && s->auto_int_masking) {
319 goto do_automask;
320 }
321
322 return;
323
324 do_automask:
325 s->interrupt_states[lidx].is_masked = true;
326 vmxnet3_update_interrupt_line_state(s, lidx);
327 }
328
329 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
330 {
331 return s->interrupt_states[lidx].is_asserted;
332 }
333
334 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
335 {
336 s->interrupt_states[int_idx].is_pending = false;
337 if (s->auto_int_masking) {
338 s->interrupt_states[int_idx].is_masked = true;
339 }
340 vmxnet3_update_interrupt_line_state(s, int_idx);
341 }
342
343 static void
344 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
345 {
346 s->interrupt_states[lidx].is_masked = is_masked;
347 vmxnet3_update_interrupt_line_state(s, lidx);
348 }
349
350 static bool vmxnet3_verify_driver_magic(PCIDevice *d, hwaddr dshmem)
351 {
352 return (VMXNET3_READ_DRV_SHARED32(d, dshmem, magic) == VMXNET3_REV1_MAGIC);
353 }
354
355 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
356 #define VMXNET3_MAKE_BYTE(byte_num, val) \
357 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
358
359 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
360 {
361 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
362 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
363 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
364 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
365 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
366 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
367
368 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
369
370 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
371 }
372
373 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
374 {
375 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
376 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
377 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
378 VMXNET3_MAKE_BYTE(3, addr->a[3]);
379 }
380
381 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
382 {
383 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
384 VMXNET3_MAKE_BYTE(1, addr->a[5]);
385 }
386
387 static void
388 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
389 {
390 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
391 }
392
393 static inline void
394 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
395 {
396 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
397 }
398
399 static inline void
400 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
401 {
402 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
403 }
404
405 static void
406 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
407 {
408 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
409 }
410
411 static void
412 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
413 {
414 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
415 }
416
417 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
418 {
419 struct Vmxnet3_TxCompDesc txcq_descr;
420 PCIDevice *d = PCI_DEVICE(s);
421
422 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
423
424 memset(&txcq_descr, 0, sizeof(txcq_descr));
425 txcq_descr.txdIdx = tx_ridx;
426 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
427 txcq_descr.val1 = cpu_to_le32(txcq_descr.val1);
428 txcq_descr.val2 = cpu_to_le32(txcq_descr.val2);
429 vmxnet3_ring_write_curr_cell(d, &s->txq_descr[qidx].comp_ring, &txcq_descr);
430
431 /* Flush changes in TX descriptor before changing the counter value */
432 smp_wmb();
433
434 vmxnet3_inc_tx_completion_counter(s, qidx);
435 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
436 }
437
438 static bool
439 vmxnet3_setup_tx_offloads(VMXNET3State *s)
440 {
441 switch (s->offload_mode) {
442 case VMXNET3_OM_NONE:
443 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
444 break;
445
446 case VMXNET3_OM_CSUM:
447 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
448 VMW_PKPRN("L4 CSO requested\n");
449 break;
450
451 case VMXNET3_OM_TSO:
452 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
453 s->cso_or_gso_size);
454 net_tx_pkt_update_ip_checksums(s->tx_pkt);
455 VMW_PKPRN("GSO offload requested.");
456 break;
457
458 default:
459 g_assert_not_reached();
460 return false;
461 }
462
463 return true;
464 }
465
466 static void
467 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
468 const struct Vmxnet3_TxDesc *txd)
469 {
470 s->offload_mode = txd->om;
471 s->cso_or_gso_size = txd->msscof;
472 s->tci = txd->tci;
473 s->needs_vlan = txd->ti;
474 }
475
476 typedef enum {
477 VMXNET3_PKT_STATUS_OK,
478 VMXNET3_PKT_STATUS_ERROR,
479 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
480 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
481 } Vmxnet3PktStatus;
482
483 static void
484 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
485 Vmxnet3PktStatus status)
486 {
487 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
488 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
489
490 switch (status) {
491 case VMXNET3_PKT_STATUS_OK:
492 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
493 case ETH_PKT_BCAST:
494 stats->bcastPktsTxOK++;
495 stats->bcastBytesTxOK += tot_len;
496 break;
497 case ETH_PKT_MCAST:
498 stats->mcastPktsTxOK++;
499 stats->mcastBytesTxOK += tot_len;
500 break;
501 case ETH_PKT_UCAST:
502 stats->ucastPktsTxOK++;
503 stats->ucastBytesTxOK += tot_len;
504 break;
505 default:
506 g_assert_not_reached();
507 }
508
509 if (s->offload_mode == VMXNET3_OM_TSO) {
510 /*
511 * According to VMWARE headers this statistic is a number
512 * of packets after segmentation but since we don't have
513 * this information in QEMU model, the best we can do is to
514 * provide number of non-segmented packets
515 */
516 stats->TSOPktsTxOK++;
517 stats->TSOBytesTxOK += tot_len;
518 }
519 break;
520
521 case VMXNET3_PKT_STATUS_DISCARD:
522 stats->pktsTxDiscard++;
523 break;
524
525 case VMXNET3_PKT_STATUS_ERROR:
526 stats->pktsTxError++;
527 break;
528
529 default:
530 g_assert_not_reached();
531 }
532 }
533
534 static void
535 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
536 int qidx,
537 Vmxnet3PktStatus status)
538 {
539 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
540 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
541
542 switch (status) {
543 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
544 stats->pktsRxOutOfBuf++;
545 break;
546
547 case VMXNET3_PKT_STATUS_ERROR:
548 stats->pktsRxError++;
549 break;
550 case VMXNET3_PKT_STATUS_OK:
551 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
552 case ETH_PKT_BCAST:
553 stats->bcastPktsRxOK++;
554 stats->bcastBytesRxOK += tot_len;
555 break;
556 case ETH_PKT_MCAST:
557 stats->mcastPktsRxOK++;
558 stats->mcastBytesRxOK += tot_len;
559 break;
560 case ETH_PKT_UCAST:
561 stats->ucastPktsRxOK++;
562 stats->ucastBytesRxOK += tot_len;
563 break;
564 default:
565 g_assert_not_reached();
566 }
567
568 if (tot_len > s->mtu) {
569 stats->LROPktsRxOK++;
570 stats->LROBytesRxOK += tot_len;
571 }
572 break;
573 default:
574 g_assert_not_reached();
575 }
576 }
577
578 static inline void
579 vmxnet3_ring_read_curr_txdesc(PCIDevice *pcidev, Vmxnet3Ring *ring,
580 struct Vmxnet3_TxDesc *txd)
581 {
582 vmxnet3_ring_read_curr_cell(pcidev, ring, txd);
583 txd->addr = le64_to_cpu(txd->addr);
584 txd->val1 = le32_to_cpu(txd->val1);
585 txd->val2 = le32_to_cpu(txd->val2);
586 }
587
588 static inline bool
589 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
590 int qidx,
591 struct Vmxnet3_TxDesc *txd,
592 uint32_t *descr_idx)
593 {
594 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
595 PCIDevice *d = PCI_DEVICE(s);
596
597 vmxnet3_ring_read_curr_txdesc(d, ring, txd);
598 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
599 /* Only read after generation field verification */
600 smp_rmb();
601 /* Re-read to be sure we got the latest version */
602 vmxnet3_ring_read_curr_txdesc(d, ring, txd);
603 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
604 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
605 vmxnet3_inc_tx_consumption_counter(s, qidx);
606 return true;
607 }
608
609 return false;
610 }
611
612 static bool
613 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
614 {
615 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
616
617 if (!vmxnet3_setup_tx_offloads(s)) {
618 status = VMXNET3_PKT_STATUS_ERROR;
619 goto func_exit;
620 }
621
622 /* debug prints */
623 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
624 net_tx_pkt_dump(s->tx_pkt);
625
626 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
627 status = VMXNET3_PKT_STATUS_DISCARD;
628 goto func_exit;
629 }
630
631 func_exit:
632 vmxnet3_on_tx_done_update_stats(s, qidx, status);
633 return (status == VMXNET3_PKT_STATUS_OK);
634 }
635
636 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
637 {
638 struct Vmxnet3_TxDesc txd;
639 uint32_t txd_idx;
640 uint32_t data_len;
641 hwaddr data_pa;
642
643 for (;;) {
644 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
645 break;
646 }
647
648 vmxnet3_dump_tx_descr(&txd);
649
650 if (!s->skip_current_tx_pkt) {
651 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
652 data_pa = txd.addr;
653
654 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
655 data_pa,
656 data_len)) {
657 s->skip_current_tx_pkt = true;
658 }
659 }
660
661 if (s->tx_sop) {
662 vmxnet3_tx_retrieve_metadata(s, &txd);
663 s->tx_sop = false;
664 }
665
666 if (txd.eop) {
667 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
668 if (s->needs_vlan) {
669 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
670 }
671
672 vmxnet3_send_packet(s, qidx);
673 } else {
674 vmxnet3_on_tx_done_update_stats(s, qidx,
675 VMXNET3_PKT_STATUS_ERROR);
676 }
677
678 vmxnet3_complete_packet(s, qidx, txd_idx);
679 s->tx_sop = true;
680 s->skip_current_tx_pkt = false;
681 net_tx_pkt_reset(s->tx_pkt);
682 }
683 }
684 }
685
686 static inline void
687 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
688 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
689 {
690 PCIDevice *d = PCI_DEVICE(s);
691
692 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
693 *didx = vmxnet3_ring_curr_cell_idx(ring);
694 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
695 dbuf->addr = le64_to_cpu(dbuf->addr);
696 dbuf->val1 = le32_to_cpu(dbuf->val1);
697 dbuf->ext1 = le32_to_cpu(dbuf->ext1);
698 }
699
700 static inline uint8_t
701 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
702 {
703 return s->rxq_descr[qidx].rx_ring[ridx].gen;
704 }
705
706 static inline hwaddr
707 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
708 {
709 uint8_t ring_gen;
710 struct Vmxnet3_RxCompDesc rxcd;
711
712 hwaddr daddr =
713 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
714
715 pci_dma_read(PCI_DEVICE(s),
716 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
717 rxcd.val1 = le32_to_cpu(rxcd.val1);
718 rxcd.val2 = le32_to_cpu(rxcd.val2);
719 rxcd.val3 = le32_to_cpu(rxcd.val3);
720 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
721
722 if (rxcd.gen != ring_gen) {
723 *descr_gen = ring_gen;
724 vmxnet3_inc_rx_completion_counter(s, qidx);
725 return daddr;
726 }
727
728 return 0;
729 }
730
731 static inline void
732 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
733 {
734 vmxnet3_dec_rx_completion_counter(s, qidx);
735 }
736
737 #define RXQ_IDX (0)
738 #define RX_HEAD_BODY_RING (0)
739 #define RX_BODY_ONLY_RING (1)
740
741 static bool
742 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
743 struct Vmxnet3_RxDesc *descr_buf,
744 uint32_t *descr_idx,
745 uint32_t *ridx)
746 {
747 for (;;) {
748 uint32_t ring_gen;
749 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
750 descr_buf, descr_idx);
751
752 /* If no more free descriptors - return */
753 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
754 if (descr_buf->gen != ring_gen) {
755 return false;
756 }
757
758 /* Only read after generation field verification */
759 smp_rmb();
760 /* Re-read to be sure we got the latest version */
761 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
762 descr_buf, descr_idx);
763
764 /* Mark current descriptor as used/skipped */
765 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
766
767 /* If this is what we are looking for - return */
768 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
769 *ridx = RX_HEAD_BODY_RING;
770 return true;
771 }
772 }
773 }
774
775 static bool
776 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
777 struct Vmxnet3_RxDesc *d,
778 uint32_t *didx,
779 uint32_t *ridx)
780 {
781 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
782
783 /* Try to find corresponding descriptor in head/body ring */
784 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
785 /* Only read after generation field verification */
786 smp_rmb();
787 /* Re-read to be sure we got the latest version */
788 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
789 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
790 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
791 *ridx = RX_HEAD_BODY_RING;
792 return true;
793 }
794 }
795
796 /*
797 * If there is no free descriptors on head/body ring or next free
798 * descriptor is a head descriptor switch to body only ring
799 */
800 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
801
802 /* If no more free descriptors - return */
803 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
804 /* Only read after generation field verification */
805 smp_rmb();
806 /* Re-read to be sure we got the latest version */
807 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
808 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
809 *ridx = RX_BODY_ONLY_RING;
810 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
811 return true;
812 }
813
814 return false;
815 }
816
817 static inline bool
818 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
819 struct Vmxnet3_RxDesc *descr_buf,
820 uint32_t *descr_idx,
821 uint32_t *ridx)
822 {
823 if (is_head || !s->rx_packets_compound) {
824 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
825 } else {
826 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
827 }
828 }
829
830 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
831 * the implementation always passes an RxCompDesc with a "Checksum
832 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
833 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
834 *
835 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
836 * and place a fully computed checksum into the tcp/udp header.
837 * Otherwise, the OS driver will receive a checksum-correct indication
838 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
839 * having just the pseudo header csum value.
840 *
841 * While this is not a problem if packet is destined for local delivery,
842 * in the case the host OS performs forwarding, it will forward an
843 * incorrectly checksummed packet.
844 */
845 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
846 const void *pkt_data,
847 size_t pkt_len)
848 {
849 struct virtio_net_hdr *vhdr;
850 bool isip4, isip6, istcp, isudp;
851 uint8_t *data;
852 int len;
853
854 if (!net_rx_pkt_has_virt_hdr(pkt)) {
855 return;
856 }
857
858 vhdr = net_rx_pkt_get_vhdr(pkt);
859 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
860 return;
861 }
862
863 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
864 if (!(isip4 || isip6) || !(istcp || isudp)) {
865 return;
866 }
867
868 vmxnet3_dump_virt_hdr(vhdr);
869
870 /* Validate packet len: csum_start + scum_offset + length of csum field */
871 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
872 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
873 "cannot calculate checksum",
874 pkt_len, vhdr->csum_start, vhdr->csum_offset);
875 return;
876 }
877
878 data = (uint8_t *)pkt_data + vhdr->csum_start;
879 len = pkt_len - vhdr->csum_start;
880 /* Put the checksum obtained into the packet */
881 stw_be_p(data + vhdr->csum_offset,
882 net_checksum_finish_nozero(net_checksum_add(len, data)));
883
884 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
885 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
886 }
887
888 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
889 struct Vmxnet3_RxCompDesc *rxcd)
890 {
891 int csum_ok, is_gso;
892 bool isip4, isip6, istcp, isudp;
893 struct virtio_net_hdr *vhdr;
894 uint8_t offload_type;
895
896 if (net_rx_pkt_is_vlan_stripped(pkt)) {
897 rxcd->ts = 1;
898 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
899 }
900
901 if (!net_rx_pkt_has_virt_hdr(pkt)) {
902 goto nocsum;
903 }
904
905 vhdr = net_rx_pkt_get_vhdr(pkt);
906 /*
907 * Checksum is valid when lower level tell so or when lower level
908 * requires checksum offload telling that packet produced/bridged
909 * locally and did travel over network after last checksum calculation
910 * or production
911 */
912 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
913 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
914
915 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
916 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
917
918 if (!csum_ok && !is_gso) {
919 goto nocsum;
920 }
921
922 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
923 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
924 goto nocsum;
925 }
926
927 rxcd->cnc = 0;
928 rxcd->v4 = isip4 ? 1 : 0;
929 rxcd->v6 = isip6 ? 1 : 0;
930 rxcd->tcp = istcp ? 1 : 0;
931 rxcd->udp = isudp ? 1 : 0;
932 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
933 return;
934
935 nocsum:
936 rxcd->cnc = 1;
937 return;
938 }
939
940 static void
941 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
942 const struct iovec *iov,
943 size_t start_iov_off,
944 hwaddr target_addr,
945 size_t bytes_to_copy)
946 {
947 size_t curr_off = 0;
948 size_t copied = 0;
949
950 while (bytes_to_copy) {
951 if (start_iov_off < (curr_off + iov->iov_len)) {
952 size_t chunk_len =
953 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
954
955 pci_dma_write(pci_dev, target_addr + copied,
956 iov->iov_base + start_iov_off - curr_off,
957 chunk_len);
958
959 copied += chunk_len;
960 start_iov_off += chunk_len;
961 curr_off = start_iov_off;
962 bytes_to_copy -= chunk_len;
963 } else {
964 curr_off += iov->iov_len;
965 }
966 iov++;
967 }
968 }
969
970 static void
971 vmxnet3_pci_dma_write_rxcd(PCIDevice *pcidev, dma_addr_t pa,
972 struct Vmxnet3_RxCompDesc *rxcd)
973 {
974 rxcd->val1 = cpu_to_le32(rxcd->val1);
975 rxcd->val2 = cpu_to_le32(rxcd->val2);
976 rxcd->val3 = cpu_to_le32(rxcd->val3);
977 pci_dma_write(pcidev, pa, rxcd, sizeof(*rxcd));
978 }
979
980 static bool
981 vmxnet3_indicate_packet(VMXNET3State *s)
982 {
983 struct Vmxnet3_RxDesc rxd;
984 PCIDevice *d = PCI_DEVICE(s);
985 bool is_head = true;
986 uint32_t rxd_idx;
987 uint32_t rx_ridx = 0;
988
989 struct Vmxnet3_RxCompDesc rxcd;
990 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
991 hwaddr new_rxcd_pa = 0;
992 hwaddr ready_rxcd_pa = 0;
993 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
994 size_t bytes_copied = 0;
995 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
996 uint16_t num_frags = 0;
997 size_t chunk_size;
998
999 net_rx_pkt_dump(s->rx_pkt);
1000
1001 while (bytes_left > 0) {
1002
1003 /* cannot add more frags to packet */
1004 if (num_frags == s->max_rx_frags) {
1005 break;
1006 }
1007
1008 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1009 if (!new_rxcd_pa) {
1010 break;
1011 }
1012
1013 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1014 break;
1015 }
1016
1017 chunk_size = MIN(bytes_left, rxd.len);
1018 vmxnet3_pci_dma_writev(d, data, bytes_copied, rxd.addr, chunk_size);
1019 bytes_copied += chunk_size;
1020 bytes_left -= chunk_size;
1021
1022 vmxnet3_dump_rx_descr(&rxd);
1023
1024 if (ready_rxcd_pa != 0) {
1025 vmxnet3_pci_dma_write_rxcd(d, ready_rxcd_pa, &rxcd);
1026 }
1027
1028 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1029 rxcd.rxdIdx = rxd_idx;
1030 rxcd.len = chunk_size;
1031 rxcd.sop = is_head;
1032 rxcd.gen = new_rxcd_gen;
1033 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1034
1035 if (bytes_left == 0) {
1036 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1037 }
1038
1039 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1040 "sop %d csum_correct %lu",
1041 (unsigned long) rx_ridx,
1042 (unsigned long) rxcd.rxdIdx,
1043 (unsigned long) rxcd.len,
1044 (int) rxcd.sop,
1045 (unsigned long) rxcd.tuc);
1046
1047 is_head = false;
1048 ready_rxcd_pa = new_rxcd_pa;
1049 new_rxcd_pa = 0;
1050 num_frags++;
1051 }
1052
1053 if (ready_rxcd_pa != 0) {
1054 rxcd.eop = 1;
1055 rxcd.err = (bytes_left != 0);
1056
1057 vmxnet3_pci_dma_write_rxcd(d, ready_rxcd_pa, &rxcd);
1058
1059 /* Flush RX descriptor changes */
1060 smp_wmb();
1061 }
1062
1063 if (new_rxcd_pa != 0) {
1064 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1065 }
1066
1067 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1068
1069 if (bytes_left == 0) {
1070 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1071 return true;
1072 } else if (num_frags == s->max_rx_frags) {
1073 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1074 return false;
1075 } else {
1076 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1077 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1078 return false;
1079 }
1080 }
1081
1082 static void
1083 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1084 uint64_t val, unsigned size)
1085 {
1086 VMXNET3State *s = opaque;
1087
1088 if (!s->device_active) {
1089 return;
1090 }
1091
1092 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1093 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1094 int tx_queue_idx =
1095 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1096 VMXNET3_REG_ALIGN);
1097 if (tx_queue_idx <= s->txq_num) {
1098 vmxnet3_process_tx_queue(s, tx_queue_idx);
1099 } else {
1100 qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Illegal TX queue %d/%d\n",
1101 tx_queue_idx, s->txq_num);
1102 }
1103 return;
1104 }
1105
1106 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1107 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1108 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1109 VMXNET3_REG_ALIGN);
1110
1111 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1112
1113 vmxnet3_on_interrupt_mask_changed(s, l, val);
1114 return;
1115 }
1116
1117 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1118 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1119 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1120 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1121 return;
1122 }
1123
1124 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1125 (uint64_t) addr, val, size);
1126 }
1127
1128 static uint64_t
1129 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1130 {
1131 VMXNET3State *s = opaque;
1132
1133 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1134 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1135 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1136 VMXNET3_REG_ALIGN);
1137 return s->interrupt_states[l].is_masked;
1138 }
1139
1140 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1141 return 0;
1142 }
1143
1144 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1145 {
1146 int i;
1147 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1148 s->interrupt_states[i].is_asserted = false;
1149 s->interrupt_states[i].is_pending = false;
1150 s->interrupt_states[i].is_masked = true;
1151 }
1152 }
1153
1154 static void vmxnet3_reset_mac(VMXNET3State *s)
1155 {
1156 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1157 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1158 }
1159
1160 static void vmxnet3_deactivate_device(VMXNET3State *s)
1161 {
1162 if (s->device_active) {
1163 VMW_CBPRN("Deactivating vmxnet3...");
1164 net_tx_pkt_reset(s->tx_pkt);
1165 net_tx_pkt_uninit(s->tx_pkt);
1166 net_rx_pkt_uninit(s->rx_pkt);
1167 s->device_active = false;
1168 }
1169 }
1170
1171 static void vmxnet3_reset(VMXNET3State *s)
1172 {
1173 VMW_CBPRN("Resetting vmxnet3...");
1174
1175 vmxnet3_deactivate_device(s);
1176 vmxnet3_reset_interrupt_states(s);
1177 s->drv_shmem = 0;
1178 s->tx_sop = true;
1179 s->skip_current_tx_pkt = false;
1180 }
1181
1182 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1183 {
1184 PCIDevice *d = PCI_DEVICE(s);
1185
1186 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1187 devRead.rxFilterConf.rxMode);
1188 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1189 }
1190
1191 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1192 {
1193 int i;
1194 PCIDevice *d = PCI_DEVICE(s);
1195
1196 /* Copy configuration from shared memory */
1197 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1198 devRead.rxFilterConf.vfTable,
1199 s->vlan_table,
1200 sizeof(s->vlan_table));
1201
1202 /* Invert byte order when needed */
1203 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1204 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1205 }
1206
1207 /* Dump configuration for debugging purposes */
1208 VMW_CFPRN("Configured VLANs:");
1209 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1210 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1211 VMW_CFPRN("\tVLAN %d is present", i);
1212 }
1213 }
1214 }
1215
1216 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1217 {
1218 PCIDevice *d = PCI_DEVICE(s);
1219
1220 uint16_t list_bytes =
1221 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1222 devRead.rxFilterConf.mfTableLen);
1223
1224 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1225
1226 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1227 if (!s->mcast_list) {
1228 if (s->mcast_list_len == 0) {
1229 VMW_CFPRN("Current multicast list is empty");
1230 } else {
1231 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1232 s->mcast_list_len);
1233 }
1234 s->mcast_list_len = 0;
1235 } else {
1236 int i;
1237 hwaddr mcast_list_pa =
1238 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1239 devRead.rxFilterConf.mfTablePA);
1240
1241 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1242
1243 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1244 for (i = 0; i < s->mcast_list_len; i++) {
1245 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1246 }
1247 }
1248 }
1249
1250 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1251 {
1252 vmxnet3_update_rx_mode(s);
1253 vmxnet3_update_vlan_filters(s);
1254 vmxnet3_update_mcast_filters(s);
1255 }
1256
1257 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1258 {
1259 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1260 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1261 return interrupt_mode;
1262 }
1263
1264 static void vmxnet3_fill_stats(VMXNET3State *s)
1265 {
1266 int i;
1267 PCIDevice *d = PCI_DEVICE(s);
1268
1269 if (!s->device_active)
1270 return;
1271
1272 for (i = 0; i < s->txq_num; i++) {
1273 pci_dma_write(d,
1274 s->txq_descr[i].tx_stats_pa,
1275 &s->txq_descr[i].txq_stats,
1276 sizeof(s->txq_descr[i].txq_stats));
1277 }
1278
1279 for (i = 0; i < s->rxq_num; i++) {
1280 pci_dma_write(d,
1281 s->rxq_descr[i].rx_stats_pa,
1282 &s->rxq_descr[i].rxq_stats,
1283 sizeof(s->rxq_descr[i].rxq_stats));
1284 }
1285 }
1286
1287 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1288 {
1289 struct Vmxnet3_GOSInfo gos;
1290 PCIDevice *d = PCI_DEVICE(s);
1291
1292 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1293 &gos, sizeof(gos));
1294 s->rx_packets_compound =
1295 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1296
1297 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1298 }
1299
1300 static void
1301 vmxnet3_dump_conf_descr(const char *name,
1302 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1303 {
1304 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1305 name, pm_descr->confVer, pm_descr->confLen);
1306
1307 };
1308
1309 static void vmxnet3_update_pm_state(VMXNET3State *s)
1310 {
1311 struct Vmxnet3_VariableLenConfDesc pm_descr;
1312 PCIDevice *d = PCI_DEVICE(s);
1313
1314 pm_descr.confLen =
1315 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1316 pm_descr.confVer =
1317 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1318 pm_descr.confPA =
1319 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1320
1321 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1322 }
1323
1324 static void vmxnet3_update_features(VMXNET3State *s)
1325 {
1326 uint32_t guest_features;
1327 int rxcso_supported;
1328 PCIDevice *d = PCI_DEVICE(s);
1329
1330 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1331 devRead.misc.uptFeatures);
1332
1333 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1334 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1335 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1336
1337 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1338 s->lro_supported, rxcso_supported,
1339 s->rx_vlan_stripping);
1340 if (s->peer_has_vhdr) {
1341 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1342 rxcso_supported,
1343 s->lro_supported,
1344 s->lro_supported,
1345 0,
1346 0);
1347 }
1348 }
1349
1350 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1351 {
1352 return s->msix_used || msi_enabled(PCI_DEVICE(s))
1353 || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1;
1354 }
1355
1356 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1357 {
1358 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1359 if (idx >= max_ints) {
1360 hw_error("Bad interrupt index: %d\n", idx);
1361 }
1362 }
1363
1364 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1365 {
1366 int i;
1367
1368 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1369 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1370
1371 for (i = 0; i < s->txq_num; i++) {
1372 int idx = s->txq_descr[i].intr_idx;
1373 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1374 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1375 }
1376
1377 for (i = 0; i < s->rxq_num; i++) {
1378 int idx = s->rxq_descr[i].intr_idx;
1379 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1380 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1381 }
1382 }
1383
1384 static bool vmxnet3_validate_queues(VMXNET3State *s)
1385 {
1386 /*
1387 * txq_num and rxq_num are total number of queues
1388 * configured by guest. These numbers must not
1389 * exceed corresponding maximal values.
1390 */
1391
1392 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1393 qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Bad TX queues number: %d\n",
1394 s->txq_num);
1395 return false;
1396 }
1397
1398 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1399 qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Bad RX queues number: %d\n",
1400 s->rxq_num);
1401 return false;
1402 }
1403
1404 return true;
1405 }
1406
1407 static void vmxnet3_activate_device(VMXNET3State *s)
1408 {
1409 int i;
1410 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1411 PCIDevice *d = PCI_DEVICE(s);
1412 hwaddr qdescr_table_pa;
1413 uint64_t pa;
1414 uint32_t size;
1415
1416 /* Verify configuration consistency */
1417 if (!vmxnet3_verify_driver_magic(d, s->drv_shmem)) {
1418 VMW_ERPRN("Device configuration received from driver is invalid");
1419 return;
1420 }
1421
1422 /* Verify if device is active */
1423 if (s->device_active) {
1424 VMW_CFPRN("Vmxnet3 device is active");
1425 return;
1426 }
1427
1428 s->txq_num =
1429 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numTxQueues);
1430 s->rxq_num =
1431 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numRxQueues);
1432
1433 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1434 if (!vmxnet3_validate_queues(s)) {
1435 return;
1436 }
1437
1438 vmxnet3_adjust_by_guest_type(s);
1439 vmxnet3_update_features(s);
1440 vmxnet3_update_pm_state(s);
1441 vmxnet3_setup_rx_filtering(s);
1442 /* Cache fields from shared memory */
1443 s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
1444 assert(VMXNET3_MIN_MTU <= s->mtu && s->mtu < VMXNET3_MAX_MTU);
1445 VMW_CFPRN("MTU is %u", s->mtu);
1446
1447 s->max_rx_frags =
1448 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1449
1450 if (s->max_rx_frags == 0) {
1451 s->max_rx_frags = 1;
1452 }
1453
1454 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1455
1456 s->event_int_idx =
1457 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1458 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1459 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1460
1461 s->auto_int_masking =
1462 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1463 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1464
1465 qdescr_table_pa =
1466 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1467 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1468
1469 /*
1470 * Worst-case scenario is a packet that holds all TX rings space so
1471 * we calculate total size of all TX rings for max TX fragments number
1472 */
1473 s->max_tx_frags = 0;
1474
1475 /* TX queues */
1476 for (i = 0; i < s->txq_num; i++) {
1477 hwaddr qdescr_pa =
1478 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1479
1480 /* Read interrupt number for this TX queue */
1481 s->txq_descr[i].intr_idx =
1482 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1483 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1484
1485 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1486
1487 /* Read rings memory locations for TX queues */
1488 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1489 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1490 if (size > VMXNET3_TX_RING_MAX_SIZE) {
1491 size = VMXNET3_TX_RING_MAX_SIZE;
1492 }
1493
1494 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1495 sizeof(struct Vmxnet3_TxDesc), false);
1496 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1497
1498 s->max_tx_frags += size;
1499
1500 /* TXC ring */
1501 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1502 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1503 if (size > VMXNET3_TC_RING_MAX_SIZE) {
1504 size = VMXNET3_TC_RING_MAX_SIZE;
1505 }
1506 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1507 sizeof(struct Vmxnet3_TxCompDesc), true);
1508 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1509
1510 s->txq_descr[i].tx_stats_pa =
1511 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1512
1513 memset(&s->txq_descr[i].txq_stats, 0,
1514 sizeof(s->txq_descr[i].txq_stats));
1515
1516 /* Fill device-managed parameters for queues */
1517 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1518 ctrl.txThreshold,
1519 VMXNET3_DEF_TX_THRESHOLD);
1520 }
1521
1522 /* Preallocate TX packet wrapper */
1523 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1524 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1525 s->max_tx_frags, s->peer_has_vhdr);
1526 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1527
1528 /* Read rings memory locations for RX queues */
1529 for (i = 0; i < s->rxq_num; i++) {
1530 int j;
1531 hwaddr qd_pa =
1532 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1533 i * sizeof(struct Vmxnet3_RxQueueDesc);
1534
1535 /* Read interrupt number for this RX queue */
1536 s->rxq_descr[i].intr_idx =
1537 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1538 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1539
1540 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1541
1542 /* Read rings memory locations */
1543 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1544 /* RX rings */
1545 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1546 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1547 if (size > VMXNET3_RX_RING_MAX_SIZE) {
1548 size = VMXNET3_RX_RING_MAX_SIZE;
1549 }
1550 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1551 sizeof(struct Vmxnet3_RxDesc), false);
1552 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1553 i, j, pa, size);
1554 }
1555
1556 /* RXC ring */
1557 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1558 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1559 if (size > VMXNET3_RC_RING_MAX_SIZE) {
1560 size = VMXNET3_RC_RING_MAX_SIZE;
1561 }
1562 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1563 sizeof(struct Vmxnet3_RxCompDesc), true);
1564 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1565
1566 s->rxq_descr[i].rx_stats_pa =
1567 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1568 memset(&s->rxq_descr[i].rxq_stats, 0,
1569 sizeof(s->rxq_descr[i].rxq_stats));
1570 }
1571
1572 vmxnet3_validate_interrupts(s);
1573
1574 /* Make sure everything is in place before device activation */
1575 smp_wmb();
1576
1577 vmxnet3_reset_mac(s);
1578
1579 s->device_active = true;
1580 }
1581
1582 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1583 {
1584 s->last_command = cmd;
1585
1586 switch (cmd) {
1587 case VMXNET3_CMD_GET_PERM_MAC_HI:
1588 VMW_CBPRN("Set: Get upper part of permanent MAC");
1589 break;
1590
1591 case VMXNET3_CMD_GET_PERM_MAC_LO:
1592 VMW_CBPRN("Set: Get lower part of permanent MAC");
1593 break;
1594
1595 case VMXNET3_CMD_GET_STATS:
1596 VMW_CBPRN("Set: Get device statistics");
1597 vmxnet3_fill_stats(s);
1598 break;
1599
1600 case VMXNET3_CMD_ACTIVATE_DEV:
1601 VMW_CBPRN("Set: Activating vmxnet3 device");
1602 vmxnet3_activate_device(s);
1603 break;
1604
1605 case VMXNET3_CMD_UPDATE_RX_MODE:
1606 VMW_CBPRN("Set: Update rx mode");
1607 vmxnet3_update_rx_mode(s);
1608 break;
1609
1610 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1611 VMW_CBPRN("Set: Update VLAN filters");
1612 vmxnet3_update_vlan_filters(s);
1613 break;
1614
1615 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1616 VMW_CBPRN("Set: Update MAC filters");
1617 vmxnet3_update_mcast_filters(s);
1618 break;
1619
1620 case VMXNET3_CMD_UPDATE_FEATURE:
1621 VMW_CBPRN("Set: Update features");
1622 vmxnet3_update_features(s);
1623 break;
1624
1625 case VMXNET3_CMD_UPDATE_PMCFG:
1626 VMW_CBPRN("Set: Update power management config");
1627 vmxnet3_update_pm_state(s);
1628 break;
1629
1630 case VMXNET3_CMD_GET_LINK:
1631 VMW_CBPRN("Set: Get link");
1632 break;
1633
1634 case VMXNET3_CMD_RESET_DEV:
1635 VMW_CBPRN("Set: Reset device");
1636 vmxnet3_reset(s);
1637 break;
1638
1639 case VMXNET3_CMD_QUIESCE_DEV:
1640 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1641 vmxnet3_deactivate_device(s);
1642 break;
1643
1644 case VMXNET3_CMD_GET_CONF_INTR:
1645 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1646 break;
1647
1648 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1649 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1650 "adaptive ring info flags");
1651 break;
1652
1653 case VMXNET3_CMD_GET_DID_LO:
1654 VMW_CBPRN("Set: Get lower part of device ID");
1655 break;
1656
1657 case VMXNET3_CMD_GET_DID_HI:
1658 VMW_CBPRN("Set: Get upper part of device ID");
1659 break;
1660
1661 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1662 VMW_CBPRN("Set: Get device extra info");
1663 break;
1664
1665 default:
1666 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1667 break;
1668 }
1669 }
1670
1671 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1672 {
1673 uint64_t ret;
1674
1675 switch (s->last_command) {
1676 case VMXNET3_CMD_ACTIVATE_DEV:
1677 ret = (s->device_active) ? 0 : 1;
1678 VMW_CFPRN("Device active: %" PRIx64, ret);
1679 break;
1680
1681 case VMXNET3_CMD_RESET_DEV:
1682 case VMXNET3_CMD_QUIESCE_DEV:
1683 case VMXNET3_CMD_GET_QUEUE_STATUS:
1684 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1685 ret = 0;
1686 break;
1687
1688 case VMXNET3_CMD_GET_LINK:
1689 ret = s->link_status_and_speed;
1690 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1691 break;
1692
1693 case VMXNET3_CMD_GET_PERM_MAC_LO:
1694 ret = vmxnet3_get_mac_low(&s->perm_mac);
1695 break;
1696
1697 case VMXNET3_CMD_GET_PERM_MAC_HI:
1698 ret = vmxnet3_get_mac_high(&s->perm_mac);
1699 break;
1700
1701 case VMXNET3_CMD_GET_CONF_INTR:
1702 ret = vmxnet3_get_interrupt_config(s);
1703 break;
1704
1705 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1706 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1707 break;
1708
1709 case VMXNET3_CMD_GET_DID_LO:
1710 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1711 break;
1712
1713 case VMXNET3_CMD_GET_DID_HI:
1714 ret = VMXNET3_DEVICE_REVISION;
1715 break;
1716
1717 default:
1718 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1719 ret = 0;
1720 break;
1721 }
1722
1723 return ret;
1724 }
1725
1726 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1727 {
1728 uint32_t events;
1729 PCIDevice *d = PCI_DEVICE(s);
1730
1731 VMW_CBPRN("Setting events: 0x%x", val);
1732 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1733 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1734 }
1735
1736 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1737 {
1738 PCIDevice *d = PCI_DEVICE(s);
1739 uint32_t events;
1740
1741 VMW_CBPRN("Clearing events: 0x%x", val);
1742 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1743 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1744 }
1745
1746 static void
1747 vmxnet3_io_bar1_write(void *opaque,
1748 hwaddr addr,
1749 uint64_t val,
1750 unsigned size)
1751 {
1752 VMXNET3State *s = opaque;
1753
1754 switch (addr) {
1755 /* Vmxnet3 Revision Report Selection */
1756 case VMXNET3_REG_VRRS:
1757 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1758 val, size);
1759 break;
1760
1761 /* UPT Version Report Selection */
1762 case VMXNET3_REG_UVRS:
1763 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1764 val, size);
1765 break;
1766
1767 /* Driver Shared Address Low */
1768 case VMXNET3_REG_DSAL:
1769 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1770 val, size);
1771 /*
1772 * Guest driver will first write the low part of the shared
1773 * memory address. We save it to temp variable and set the
1774 * shared address only after we get the high part
1775 */
1776 if (val == 0) {
1777 vmxnet3_deactivate_device(s);
1778 }
1779 s->temp_shared_guest_driver_memory = val;
1780 s->drv_shmem = 0;
1781 break;
1782
1783 /* Driver Shared Address High */
1784 case VMXNET3_REG_DSAH:
1785 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1786 val, size);
1787 /*
1788 * Set the shared memory between guest driver and device.
1789 * We already should have low address part.
1790 */
1791 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1792 break;
1793
1794 /* Command */
1795 case VMXNET3_REG_CMD:
1796 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1797 val, size);
1798 vmxnet3_handle_command(s, val);
1799 break;
1800
1801 /* MAC Address Low */
1802 case VMXNET3_REG_MACL:
1803 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1804 val, size);
1805 s->temp_mac = val;
1806 break;
1807
1808 /* MAC Address High */
1809 case VMXNET3_REG_MACH:
1810 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1811 val, size);
1812 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1813 break;
1814
1815 /* Interrupt Cause Register */
1816 case VMXNET3_REG_ICR:
1817 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1818 val, size);
1819 qemu_log_mask(LOG_GUEST_ERROR,
1820 "%s: write to read-only register VMXNET3_REG_ICR\n",
1821 TYPE_VMXNET3);
1822 break;
1823
1824 /* Event Cause Register */
1825 case VMXNET3_REG_ECR:
1826 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1827 val, size);
1828 vmxnet3_ack_events(s, val);
1829 break;
1830
1831 default:
1832 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1833 addr, val, size);
1834 break;
1835 }
1836 }
1837
1838 static uint64_t
1839 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1840 {
1841 VMXNET3State *s = opaque;
1842 uint64_t ret = 0;
1843
1844 switch (addr) {
1845 /* Vmxnet3 Revision Report Selection */
1846 case VMXNET3_REG_VRRS:
1847 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1848 ret = VMXNET3_DEVICE_REVISION;
1849 break;
1850
1851 /* UPT Version Report Selection */
1852 case VMXNET3_REG_UVRS:
1853 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1854 ret = VMXNET3_UPT_REVISION;
1855 break;
1856
1857 /* Command */
1858 case VMXNET3_REG_CMD:
1859 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1860 ret = vmxnet3_get_command_status(s);
1861 break;
1862
1863 /* MAC Address Low */
1864 case VMXNET3_REG_MACL:
1865 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1866 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1867 break;
1868
1869 /* MAC Address High */
1870 case VMXNET3_REG_MACH:
1871 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1872 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1873 break;
1874
1875 /*
1876 * Interrupt Cause Register
1877 * Used for legacy interrupts only so interrupt index always 0
1878 */
1879 case VMXNET3_REG_ICR:
1880 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1881 if (vmxnet3_interrupt_asserted(s, 0)) {
1882 vmxnet3_clear_interrupt(s, 0);
1883 ret = true;
1884 } else {
1885 ret = false;
1886 }
1887 break;
1888
1889 default:
1890 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1891 break;
1892 }
1893
1894 return ret;
1895 }
1896
1897 static int
1898 vmxnet3_can_receive(NetClientState *nc)
1899 {
1900 VMXNET3State *s = qemu_get_nic_opaque(nc);
1901 return s->device_active &&
1902 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1903 }
1904
1905 static inline bool
1906 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1907 {
1908 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1909 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1910 return true;
1911 }
1912
1913 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1914 }
1915
1916 static bool
1917 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1918 {
1919 int i;
1920 for (i = 0; i < s->mcast_list_len; i++) {
1921 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1922 return true;
1923 }
1924 }
1925 return false;
1926 }
1927
1928 static bool
1929 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1930 size_t size)
1931 {
1932 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1933
1934 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1935 return true;
1936 }
1937
1938 if (!vmxnet3_is_registered_vlan(s, data)) {
1939 return false;
1940 }
1941
1942 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1943 case ETH_PKT_UCAST:
1944 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1945 return false;
1946 }
1947 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1948 return false;
1949 }
1950 break;
1951
1952 case ETH_PKT_BCAST:
1953 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
1954 return false;
1955 }
1956 break;
1957
1958 case ETH_PKT_MCAST:
1959 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
1960 return true;
1961 }
1962 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
1963 return false;
1964 }
1965 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
1966 return false;
1967 }
1968 break;
1969
1970 default:
1971 g_assert_not_reached();
1972 }
1973
1974 return true;
1975 }
1976
1977 static ssize_t
1978 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
1979 {
1980 VMXNET3State *s = qemu_get_nic_opaque(nc);
1981 size_t bytes_indicated;
1982 uint8_t min_buf[MIN_BUF_SIZE];
1983
1984 if (!vmxnet3_can_receive(nc)) {
1985 VMW_PKPRN("Cannot receive now");
1986 return -1;
1987 }
1988
1989 if (s->peer_has_vhdr) {
1990 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
1991 buf += sizeof(struct virtio_net_hdr);
1992 size -= sizeof(struct virtio_net_hdr);
1993 }
1994
1995 /* Pad to minimum Ethernet frame length */
1996 if (size < sizeof(min_buf)) {
1997 memcpy(min_buf, buf, size);
1998 memset(&min_buf[size], 0, sizeof(min_buf) - size);
1999 buf = min_buf;
2000 size = sizeof(min_buf);
2001 }
2002
2003 net_rx_pkt_set_packet_type(s->rx_pkt,
2004 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
2005
2006 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2007 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
2008 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2009 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2010 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2011 if (bytes_indicated < size) {
2012 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2013 }
2014 } else {
2015 VMW_PKPRN("Packet dropped by RX filter");
2016 bytes_indicated = size;
2017 }
2018
2019 assert(size > 0);
2020 assert(bytes_indicated != 0);
2021 return bytes_indicated;
2022 }
2023
2024 static void vmxnet3_set_link_status(NetClientState *nc)
2025 {
2026 VMXNET3State *s = qemu_get_nic_opaque(nc);
2027
2028 if (nc->link_down) {
2029 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2030 } else {
2031 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2032 }
2033
2034 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2035 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2036 }
2037
2038 static NetClientInfo net_vmxnet3_info = {
2039 .type = NET_CLIENT_DRIVER_NIC,
2040 .size = sizeof(NICState),
2041 .receive = vmxnet3_receive,
2042 .link_status_changed = vmxnet3_set_link_status,
2043 };
2044
2045 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2046 {
2047 NetClientState *nc = qemu_get_queue(s->nic);
2048
2049 if (qemu_has_vnet_hdr(nc->peer)) {
2050 return true;
2051 }
2052
2053 return false;
2054 }
2055
2056 static void vmxnet3_net_uninit(VMXNET3State *s)
2057 {
2058 g_free(s->mcast_list);
2059 vmxnet3_deactivate_device(s);
2060 qemu_del_nic(s->nic);
2061 }
2062
2063 static void vmxnet3_net_init(VMXNET3State *s)
2064 {
2065 DeviceState *d = DEVICE(s);
2066
2067 VMW_CBPRN("vmxnet3_net_init called...");
2068
2069 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2070
2071 /* Windows guest will query the address that was set on init */
2072 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2073
2074 s->mcast_list = NULL;
2075 s->mcast_list_len = 0;
2076
2077 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2078
2079 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2080
2081 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2082 object_get_typename(OBJECT(s)),
2083 d->id, s);
2084
2085 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2086 s->tx_sop = true;
2087 s->skip_current_tx_pkt = false;
2088 s->tx_pkt = NULL;
2089 s->rx_pkt = NULL;
2090 s->rx_vlan_stripping = false;
2091 s->lro_supported = false;
2092
2093 if (s->peer_has_vhdr) {
2094 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2095 sizeof(struct virtio_net_hdr));
2096
2097 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2098 }
2099
2100 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2101 }
2102
2103 static void
2104 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2105 {
2106 PCIDevice *d = PCI_DEVICE(s);
2107 int i;
2108 for (i = 0; i < num_vectors; i++) {
2109 msix_vector_unuse(d, i);
2110 }
2111 }
2112
2113 static bool
2114 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2115 {
2116 PCIDevice *d = PCI_DEVICE(s);
2117 int i;
2118 for (i = 0; i < num_vectors; i++) {
2119 int res = msix_vector_use(d, i);
2120 if (0 > res) {
2121 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2122 vmxnet3_unuse_msix_vectors(s, i);
2123 return false;
2124 }
2125 }
2126 return true;
2127 }
2128
2129 static bool
2130 vmxnet3_init_msix(VMXNET3State *s)
2131 {
2132 PCIDevice *d = PCI_DEVICE(s);
2133 int res = msix_init(d, VMXNET3_MAX_INTRS,
2134 &s->msix_bar,
2135 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2136 &s->msix_bar,
2137 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2138 VMXNET3_MSIX_OFFSET(s), NULL);
2139
2140 if (0 > res) {
2141 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2142 s->msix_used = false;
2143 } else {
2144 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2145 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2146 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2147 s->msix_used = false;
2148 } else {
2149 s->msix_used = true;
2150 }
2151 }
2152 return s->msix_used;
2153 }
2154
2155 static void
2156 vmxnet3_cleanup_msix(VMXNET3State *s)
2157 {
2158 PCIDevice *d = PCI_DEVICE(s);
2159
2160 if (s->msix_used) {
2161 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2162 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2163 }
2164 }
2165
2166 static void
2167 vmxnet3_cleanup_msi(VMXNET3State *s)
2168 {
2169 PCIDevice *d = PCI_DEVICE(s);
2170
2171 msi_uninit(d);
2172 }
2173
2174 static const MemoryRegionOps b0_ops = {
2175 .read = vmxnet3_io_bar0_read,
2176 .write = vmxnet3_io_bar0_write,
2177 .endianness = DEVICE_LITTLE_ENDIAN,
2178 .impl = {
2179 .min_access_size = 4,
2180 .max_access_size = 4,
2181 },
2182 };
2183
2184 static const MemoryRegionOps b1_ops = {
2185 .read = vmxnet3_io_bar1_read,
2186 .write = vmxnet3_io_bar1_write,
2187 .endianness = DEVICE_LITTLE_ENDIAN,
2188 .impl = {
2189 .min_access_size = 4,
2190 .max_access_size = 4,
2191 },
2192 };
2193
2194 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2195 {
2196 uint64_t dsn_payload;
2197 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2198
2199 dsnp[0] = 0xfe;
2200 dsnp[1] = s->conf.macaddr.a[3];
2201 dsnp[2] = s->conf.macaddr.a[4];
2202 dsnp[3] = s->conf.macaddr.a[5];
2203 dsnp[4] = s->conf.macaddr.a[0];
2204 dsnp[5] = s->conf.macaddr.a[1];
2205 dsnp[6] = s->conf.macaddr.a[2];
2206 dsnp[7] = 0xff;
2207 return dsn_payload;
2208 }
2209
2210
2211 #define VMXNET3_USE_64BIT (true)
2212 #define VMXNET3_PER_VECTOR_MASK (false)
2213
2214 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2215 {
2216 VMXNET3State *s = VMXNET3(pci_dev);
2217 int ret;
2218
2219 VMW_CBPRN("Starting init...");
2220
2221 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2222 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2223 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2224 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2225
2226 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2227 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2228 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2229 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2230
2231 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2232 VMXNET3_MSIX_BAR_SIZE);
2233 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2234 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2235
2236 vmxnet3_reset_interrupt_states(s);
2237
2238 /* Interrupt pin A */
2239 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2240
2241 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2242 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2243 /* Any error other than -ENOTSUP(board's MSI support is broken)
2244 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2245 assert(!ret || ret == -ENOTSUP);
2246
2247 if (!vmxnet3_init_msix(s)) {
2248 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2249 }
2250
2251 vmxnet3_net_init(s);
2252
2253 if (pci_is_express(pci_dev)) {
2254 if (pci_bus_is_express(pci_get_bus(pci_dev))) {
2255 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2256 }
2257
2258 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2259 vmxnet3_device_serial_num(s));
2260 }
2261 }
2262
2263 static void vmxnet3_instance_init(Object *obj)
2264 {
2265 VMXNET3State *s = VMXNET3(obj);
2266 device_add_bootindex_property(obj, &s->conf.bootindex,
2267 "bootindex", "/ethernet-phy@0",
2268 DEVICE(obj));
2269 }
2270
2271 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2272 {
2273 VMXNET3State *s = VMXNET3(pci_dev);
2274
2275 VMW_CBPRN("Starting uninit...");
2276
2277 vmxnet3_net_uninit(s);
2278
2279 vmxnet3_cleanup_msix(s);
2280
2281 vmxnet3_cleanup_msi(s);
2282 }
2283
2284 static void vmxnet3_qdev_reset(DeviceState *dev)
2285 {
2286 PCIDevice *d = PCI_DEVICE(dev);
2287 VMXNET3State *s = VMXNET3(d);
2288
2289 VMW_CBPRN("Starting QDEV reset...");
2290 vmxnet3_reset(s);
2291 }
2292
2293 static bool vmxnet3_mc_list_needed(void *opaque)
2294 {
2295 return true;
2296 }
2297
2298 static int vmxnet3_mcast_list_pre_load(void *opaque)
2299 {
2300 VMXNET3State *s = opaque;
2301
2302 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2303
2304 return 0;
2305 }
2306
2307
2308 static int vmxnet3_pre_save(void *opaque)
2309 {
2310 VMXNET3State *s = opaque;
2311
2312 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2313
2314 return 0;
2315 }
2316
2317 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2318 .name = "vmxnet3/mcast_list",
2319 .version_id = 1,
2320 .minimum_version_id = 1,
2321 .pre_load = vmxnet3_mcast_list_pre_load,
2322 .needed = vmxnet3_mc_list_needed,
2323 .fields = (VMStateField[]) {
2324 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL,
2325 mcast_list_buff_size),
2326 VMSTATE_END_OF_LIST()
2327 }
2328 };
2329
2330 static const VMStateDescription vmstate_vmxnet3_ring = {
2331 .name = "vmxnet3-ring",
2332 .version_id = 0,
2333 .fields = (VMStateField[]) {
2334 VMSTATE_UINT64(pa, Vmxnet3Ring),
2335 VMSTATE_UINT32(size, Vmxnet3Ring),
2336 VMSTATE_UINT32(cell_size, Vmxnet3Ring),
2337 VMSTATE_UINT32(next, Vmxnet3Ring),
2338 VMSTATE_UINT8(gen, Vmxnet3Ring),
2339 VMSTATE_END_OF_LIST()
2340 }
2341 };
2342
2343 static const VMStateDescription vmstate_vmxnet3_tx_stats = {
2344 .name = "vmxnet3-tx-stats",
2345 .version_id = 0,
2346 .fields = (VMStateField[]) {
2347 VMSTATE_UINT64(TSOPktsTxOK, struct UPT1_TxStats),
2348 VMSTATE_UINT64(TSOBytesTxOK, struct UPT1_TxStats),
2349 VMSTATE_UINT64(ucastPktsTxOK, struct UPT1_TxStats),
2350 VMSTATE_UINT64(ucastBytesTxOK, struct UPT1_TxStats),
2351 VMSTATE_UINT64(mcastPktsTxOK, struct UPT1_TxStats),
2352 VMSTATE_UINT64(mcastBytesTxOK, struct UPT1_TxStats),
2353 VMSTATE_UINT64(bcastPktsTxOK, struct UPT1_TxStats),
2354 VMSTATE_UINT64(bcastBytesTxOK, struct UPT1_TxStats),
2355 VMSTATE_UINT64(pktsTxError, struct UPT1_TxStats),
2356 VMSTATE_UINT64(pktsTxDiscard, struct UPT1_TxStats),
2357 VMSTATE_END_OF_LIST()
2358 }
2359 };
2360
2361 static const VMStateDescription vmstate_vmxnet3_txq_descr = {
2362 .name = "vmxnet3-txq-descr",
2363 .version_id = 0,
2364 .fields = (VMStateField[]) {
2365 VMSTATE_STRUCT(tx_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2366 Vmxnet3Ring),
2367 VMSTATE_STRUCT(comp_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2368 Vmxnet3Ring),
2369 VMSTATE_UINT8(intr_idx, Vmxnet3TxqDescr),
2370 VMSTATE_UINT64(tx_stats_pa, Vmxnet3TxqDescr),
2371 VMSTATE_STRUCT(txq_stats, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_tx_stats,
2372 struct UPT1_TxStats),
2373 VMSTATE_END_OF_LIST()
2374 }
2375 };
2376
2377 static const VMStateDescription vmstate_vmxnet3_rx_stats = {
2378 .name = "vmxnet3-rx-stats",
2379 .version_id = 0,
2380 .fields = (VMStateField[]) {
2381 VMSTATE_UINT64(LROPktsRxOK, struct UPT1_RxStats),
2382 VMSTATE_UINT64(LROBytesRxOK, struct UPT1_RxStats),
2383 VMSTATE_UINT64(ucastPktsRxOK, struct UPT1_RxStats),
2384 VMSTATE_UINT64(ucastBytesRxOK, struct UPT1_RxStats),
2385 VMSTATE_UINT64(mcastPktsRxOK, struct UPT1_RxStats),
2386 VMSTATE_UINT64(mcastBytesRxOK, struct UPT1_RxStats),
2387 VMSTATE_UINT64(bcastPktsRxOK, struct UPT1_RxStats),
2388 VMSTATE_UINT64(bcastBytesRxOK, struct UPT1_RxStats),
2389 VMSTATE_UINT64(pktsRxOutOfBuf, struct UPT1_RxStats),
2390 VMSTATE_UINT64(pktsRxError, struct UPT1_RxStats),
2391 VMSTATE_END_OF_LIST()
2392 }
2393 };
2394
2395 static const VMStateDescription vmstate_vmxnet3_rxq_descr = {
2396 .name = "vmxnet3-rxq-descr",
2397 .version_id = 0,
2398 .fields = (VMStateField[]) {
2399 VMSTATE_STRUCT_ARRAY(rx_ring, Vmxnet3RxqDescr,
2400 VMXNET3_RX_RINGS_PER_QUEUE, 0,
2401 vmstate_vmxnet3_ring, Vmxnet3Ring),
2402 VMSTATE_STRUCT(comp_ring, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_ring,
2403 Vmxnet3Ring),
2404 VMSTATE_UINT8(intr_idx, Vmxnet3RxqDescr),
2405 VMSTATE_UINT64(rx_stats_pa, Vmxnet3RxqDescr),
2406 VMSTATE_STRUCT(rxq_stats, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_rx_stats,
2407 struct UPT1_RxStats),
2408 VMSTATE_END_OF_LIST()
2409 }
2410 };
2411
2412 static int vmxnet3_post_load(void *opaque, int version_id)
2413 {
2414 VMXNET3State *s = opaque;
2415 PCIDevice *d = PCI_DEVICE(s);
2416
2417 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2418 s->max_tx_frags, s->peer_has_vhdr);
2419 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2420
2421 if (s->msix_used) {
2422 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2423 VMW_WRPRN("Failed to re-use MSI-X vectors");
2424 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2425 s->msix_used = false;
2426 return -1;
2427 }
2428 }
2429
2430 if (!vmxnet3_validate_queues(s)) {
2431 return -1;
2432 }
2433 vmxnet3_validate_interrupts(s);
2434
2435 return 0;
2436 }
2437
2438 static const VMStateDescription vmstate_vmxnet3_int_state = {
2439 .name = "vmxnet3-int-state",
2440 .version_id = 0,
2441 .fields = (VMStateField[]) {
2442 VMSTATE_BOOL(is_masked, Vmxnet3IntState),
2443 VMSTATE_BOOL(is_pending, Vmxnet3IntState),
2444 VMSTATE_BOOL(is_asserted, Vmxnet3IntState),
2445 VMSTATE_END_OF_LIST()
2446 }
2447 };
2448
2449 static const VMStateDescription vmstate_vmxnet3 = {
2450 .name = "vmxnet3",
2451 .version_id = 1,
2452 .minimum_version_id = 1,
2453 .pre_save = vmxnet3_pre_save,
2454 .post_load = vmxnet3_post_load,
2455 .fields = (VMStateField[]) {
2456 VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
2457 VMSTATE_MSIX(parent_obj, VMXNET3State),
2458 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2459 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2460 VMSTATE_BOOL(lro_supported, VMXNET3State),
2461 VMSTATE_UINT32(rx_mode, VMXNET3State),
2462 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2463 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2464 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2465 VMSTATE_UINT32(mtu, VMXNET3State),
2466 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2467 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2468 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2469 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2470 VMSTATE_UINT8(txq_num, VMXNET3State),
2471 VMSTATE_UINT8(rxq_num, VMXNET3State),
2472 VMSTATE_UINT32(device_active, VMXNET3State),
2473 VMSTATE_UINT32(last_command, VMXNET3State),
2474 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2475 VMSTATE_UINT32(temp_mac, VMXNET3State),
2476 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2477 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2478
2479 VMSTATE_STRUCT_ARRAY(txq_descr, VMXNET3State,
2480 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, vmstate_vmxnet3_txq_descr,
2481 Vmxnet3TxqDescr),
2482 VMSTATE_STRUCT_ARRAY(rxq_descr, VMXNET3State,
2483 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, vmstate_vmxnet3_rxq_descr,
2484 Vmxnet3RxqDescr),
2485 VMSTATE_STRUCT_ARRAY(interrupt_states, VMXNET3State,
2486 VMXNET3_MAX_INTRS, 0, vmstate_vmxnet3_int_state,
2487 Vmxnet3IntState),
2488
2489 VMSTATE_END_OF_LIST()
2490 },
2491 .subsections = (const VMStateDescription*[]) {
2492 &vmxstate_vmxnet3_mcast_list,
2493 NULL
2494 }
2495 };
2496
2497 static Property vmxnet3_properties[] = {
2498 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2499 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2500 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2501 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2502 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2503 DEFINE_PROP_END_OF_LIST(),
2504 };
2505
2506 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2507 {
2508 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2509 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2510 VMXNET3State *s = VMXNET3(qdev);
2511
2512 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2513 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2514 }
2515
2516 vc->parent_dc_realize(qdev, errp);
2517 }
2518
2519 static void vmxnet3_class_init(ObjectClass *class, void *data)
2520 {
2521 DeviceClass *dc = DEVICE_CLASS(class);
2522 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2523 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2524
2525 c->realize = vmxnet3_pci_realize;
2526 c->exit = vmxnet3_pci_uninit;
2527 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2528 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2529 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2530 c->romfile = "efi-vmxnet3.rom";
2531 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2532 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2533 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2534 device_class_set_parent_realize(dc, vmxnet3_realize,
2535 &vc->parent_dc_realize);
2536 dc->desc = "VMWare Paravirtualized Ethernet v3";
2537 dc->reset = vmxnet3_qdev_reset;
2538 dc->vmsd = &vmstate_vmxnet3;
2539 device_class_set_props(dc, vmxnet3_properties);
2540 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2541 }
2542
2543 static const TypeInfo vmxnet3_info = {
2544 .name = TYPE_VMXNET3,
2545 .parent = TYPE_PCI_DEVICE,
2546 .class_size = sizeof(VMXNET3Class),
2547 .instance_size = sizeof(VMXNET3State),
2548 .class_init = vmxnet3_class_init,
2549 .instance_init = vmxnet3_instance_init,
2550 .interfaces = (InterfaceInfo[]) {
2551 { INTERFACE_PCIE_DEVICE },
2552 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
2553 { }
2554 },
2555 };
2556
2557 static void vmxnet3_register_types(void)
2558 {
2559 VMW_CBPRN("vmxnet3_register_types called...");
2560 type_register_static(&vmxnet3_info);
2561 }
2562
2563 type_init(vmxnet3_register_types)
QEmu