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docs: merge HACKING.rst contents into CODING_STYLE.rst
[qemu/ar7.git] / hw / net / vmxnet3.c
blobb07adeed9c644a3a9116fae17d30ada259c9a286
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/module.h"
27 #include "hw/pci/msix.h"
28 #include "hw/pci/msi.h"
29 #include "migration/register.h"
30 #include "migration/vmstate.h"
31
32 #include "vmxnet3.h"
33 #include "vmxnet3_defs.h"
34 #include "vmxnet_debug.h"
35 #include "vmware_utils.h"
36 #include "net_tx_pkt.h"
37 #include "net_rx_pkt.h"
38
39 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
40 #define VMXNET3_MSIX_BAR_SIZE 0x2000
41 #define MIN_BUF_SIZE 60
42
43 /* Compatibility flags for migration */
44 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
45 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
46 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
47 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
48 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
49 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
50
51 #define VMXNET3_EXP_EP_OFFSET (0x48)
52 #define VMXNET3_MSI_OFFSET(s) \
53 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
54 #define VMXNET3_MSIX_OFFSET(s) \
55 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
56 #define VMXNET3_DSN_OFFSET (0x100)
57
58 #define VMXNET3_BAR0_IDX (0)
59 #define VMXNET3_BAR1_IDX (1)
60 #define VMXNET3_MSIX_BAR_IDX (2)
61
62 #define VMXNET3_OFF_MSIX_TABLE (0x000)
63 #define VMXNET3_OFF_MSIX_PBA(s) \
64 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
65
66 /* Link speed in Mbps should be shifted by 16 */
67 #define VMXNET3_LINK_SPEED (1000 << 16)
68
69 /* Link status: 1 - up, 0 - down. */
70 #define VMXNET3_LINK_STATUS_UP 0x1
71
72 /* Least significant bit should be set for revision and version */
73 #define VMXNET3_UPT_REVISION 0x1
74 #define VMXNET3_DEVICE_REVISION 0x1
75
76 /* Number of interrupt vectors for non-MSIx modes */
77 #define VMXNET3_MAX_NMSIX_INTRS (1)
78
79 /* Macros for rings descriptors access */
80 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
81 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
82
83 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
84 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
85
86 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
87 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
88
89 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
90 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
91
92 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
93 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
94
95 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
96 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
97
98 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
99 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
100
101 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
102 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
103
104 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
105 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
106
107 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
108 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
109
110 /* Macros for guest driver shared area access */
111 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
112 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
113
114 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
115 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
116
117 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
118 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
119
120 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
121 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
122
123 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
124 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
125
126 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
127 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
128
129 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
130
131 typedef struct VMXNET3Class {
132 PCIDeviceClass parent_class;
133 DeviceRealize parent_dc_realize;
134 } VMXNET3Class;
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 static inline void vmxnet3_ring_init(PCIDevice *d,
142 Vmxnet3Ring *ring,
143 hwaddr pa,
144 uint32_t size,
145 uint32_t cell_size,
146 bool zero_region)
147 {
148 ring->pa = pa;
149 ring->size = size;
150 ring->cell_size = cell_size;
151 ring->gen = VMXNET3_INIT_GEN;
152 ring->next = 0;
153
154 if (zero_region) {
155 vmw_shmem_set(d, pa, 0, size * cell_size);
156 }
157 }
158
159 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
160 macro("%s#%d: base %" PRIx64 " size %u cell_size %u gen %d next %u", \
161 (ring_name), (ridx), \
162 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
163
164 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
165 {
166 if (++ring->next >= ring->size) {
167 ring->next = 0;
168 ring->gen ^= 1;
169 }
170 }
171
172 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
173 {
174 if (ring->next-- == 0) {
175 ring->next = ring->size - 1;
176 ring->gen ^= 1;
177 }
178 }
179
180 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
181 {
182 return ring->pa + ring->next * ring->cell_size;
183 }
184
185 static inline void vmxnet3_ring_read_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
186 void *buff)
187 {
188 vmw_shmem_read(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
189 }
190
191 static inline void vmxnet3_ring_write_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
192 void *buff)
193 {
194 vmw_shmem_write(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
195 }
196
197 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
198 {
199 return ring->next;
200 }
201
202 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
203 {
204 return ring->gen;
205 }
206
207 /* Debug trace-related functions */
208 static inline void
209 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
210 {
211 VMW_PKPRN("TX DESCR: "
212 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
213 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
214 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
215 descr->addr, descr->len, descr->gen, descr->rsvd,
216 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
217 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
218 }
219
220 static inline void
221 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
222 {
223 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
224 "csum_start: %d, csum_offset: %d",
225 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
226 vhdr->csum_start, vhdr->csum_offset);
227 }
228
229 static inline void
230 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
231 {
232 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
233 "dtype: %d, ext1: %d, btype: %d",
234 descr->addr, descr->len, descr->gen,
235 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
236 }
237
238 /* Interrupt management */
239
240 /*
241 * This function returns sign whether interrupt line is in asserted state
242 * This depends on the type of interrupt used. For INTX interrupt line will
243 * be asserted until explicit deassertion, for MSI(X) interrupt line will
244 * be deasserted automatically due to notification semantics of the MSI(X)
245 * interrupts
246 */
247 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
248 {
249 PCIDevice *d = PCI_DEVICE(s);
250
251 if (s->msix_used && msix_enabled(d)) {
252 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
253 msix_notify(d, int_idx);
254 return false;
255 }
256 if (msi_enabled(d)) {
257 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
258 msi_notify(d, int_idx);
259 return false;
260 }
261
262 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
263 pci_irq_assert(d);
264 return true;
265 }
266
267 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
268 {
269 PCIDevice *d = PCI_DEVICE(s);
270
271 /*
272 * This function should never be called for MSI(X) interrupts
273 * because deassertion never required for message interrupts
274 */
275 assert(!s->msix_used || !msix_enabled(d));
276 /*
277 * This function should never be called for MSI(X) interrupts
278 * because deassertion never required for message interrupts
279 */
280 assert(!msi_enabled(d));
281
282 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
283 pci_irq_deassert(d);
284 }
285
286 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
287 {
288 if (!s->interrupt_states[lidx].is_pending &&
289 s->interrupt_states[lidx].is_asserted) {
290 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
291 _vmxnet3_deassert_interrupt_line(s, lidx);
292 s->interrupt_states[lidx].is_asserted = false;
293 return;
294 }
295
296 if (s->interrupt_states[lidx].is_pending &&
297 !s->interrupt_states[lidx].is_masked &&
298 !s->interrupt_states[lidx].is_asserted) {
299 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
300 s->interrupt_states[lidx].is_asserted =
301 _vmxnet3_assert_interrupt_line(s, lidx);
302 s->interrupt_states[lidx].is_pending = false;
303 return;
304 }
305 }
306
307 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
308 {
309 PCIDevice *d = PCI_DEVICE(s);
310 s->interrupt_states[lidx].is_pending = true;
311 vmxnet3_update_interrupt_line_state(s, lidx);
312
313 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
314 goto do_automask;
315 }
316
317 if (msi_enabled(d) && s->auto_int_masking) {
318 goto do_automask;
319 }
320
321 return;
322
323 do_automask:
324 s->interrupt_states[lidx].is_masked = true;
325 vmxnet3_update_interrupt_line_state(s, lidx);
326 }
327
328 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
329 {
330 return s->interrupt_states[lidx].is_asserted;
331 }
332
333 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
334 {
335 s->interrupt_states[int_idx].is_pending = false;
336 if (s->auto_int_masking) {
337 s->interrupt_states[int_idx].is_masked = true;
338 }
339 vmxnet3_update_interrupt_line_state(s, int_idx);
340 }
341
342 static void
343 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
344 {
345 s->interrupt_states[lidx].is_masked = is_masked;
346 vmxnet3_update_interrupt_line_state(s, lidx);
347 }
348
349 static bool vmxnet3_verify_driver_magic(PCIDevice *d, hwaddr dshmem)
350 {
351 return (VMXNET3_READ_DRV_SHARED32(d, dshmem, magic) == VMXNET3_REV1_MAGIC);
352 }
353
354 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
355 #define VMXNET3_MAKE_BYTE(byte_num, val) \
356 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
357
358 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
359 {
360 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
361 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
362 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
363 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
364 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
365 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
366
367 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
368
369 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
370 }
371
372 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
373 {
374 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
375 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
376 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
377 VMXNET3_MAKE_BYTE(3, addr->a[3]);
378 }
379
380 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
381 {
382 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
383 VMXNET3_MAKE_BYTE(1, addr->a[5]);
384 }
385
386 static void
387 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
388 {
389 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
390 }
391
392 static inline void
393 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
394 {
395 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
396 }
397
398 static inline void
399 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
400 {
401 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
402 }
403
404 static void
405 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
406 {
407 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
408 }
409
410 static void
411 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
412 {
413 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
414 }
415
416 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
417 {
418 struct Vmxnet3_TxCompDesc txcq_descr;
419 PCIDevice *d = PCI_DEVICE(s);
420
421 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
422
423 memset(&txcq_descr, 0, sizeof(txcq_descr));
424 txcq_descr.txdIdx = tx_ridx;
425 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
426 txcq_descr.val1 = cpu_to_le32(txcq_descr.val1);
427 txcq_descr.val2 = cpu_to_le32(txcq_descr.val2);
428 vmxnet3_ring_write_curr_cell(d, &s->txq_descr[qidx].comp_ring, &txcq_descr);
429
430 /* Flush changes in TX descriptor before changing the counter value */
431 smp_wmb();
432
433 vmxnet3_inc_tx_completion_counter(s, qidx);
434 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
435 }
436
437 static bool
438 vmxnet3_setup_tx_offloads(VMXNET3State *s)
439 {
440 switch (s->offload_mode) {
441 case VMXNET3_OM_NONE:
442 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
443 break;
444
445 case VMXNET3_OM_CSUM:
446 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
447 VMW_PKPRN("L4 CSO requested\n");
448 break;
449
450 case VMXNET3_OM_TSO:
451 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
452 s->cso_or_gso_size);
453 net_tx_pkt_update_ip_checksums(s->tx_pkt);
454 VMW_PKPRN("GSO offload requested.");
455 break;
456
457 default:
458 g_assert_not_reached();
459 return false;
460 }
461
462 return true;
463 }
464
465 static void
466 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
467 const struct Vmxnet3_TxDesc *txd)
468 {
469 s->offload_mode = txd->om;
470 s->cso_or_gso_size = txd->msscof;
471 s->tci = txd->tci;
472 s->needs_vlan = txd->ti;
473 }
474
475 typedef enum {
476 VMXNET3_PKT_STATUS_OK,
477 VMXNET3_PKT_STATUS_ERROR,
478 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
479 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
480 } Vmxnet3PktStatus;
481
482 static void
483 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
484 Vmxnet3PktStatus status)
485 {
486 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
487 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
488
489 switch (status) {
490 case VMXNET3_PKT_STATUS_OK:
491 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
492 case ETH_PKT_BCAST:
493 stats->bcastPktsTxOK++;
494 stats->bcastBytesTxOK += tot_len;
495 break;
496 case ETH_PKT_MCAST:
497 stats->mcastPktsTxOK++;
498 stats->mcastBytesTxOK += tot_len;
499 break;
500 case ETH_PKT_UCAST:
501 stats->ucastPktsTxOK++;
502 stats->ucastBytesTxOK += tot_len;
503 break;
504 default:
505 g_assert_not_reached();
506 }
507
508 if (s->offload_mode == VMXNET3_OM_TSO) {
509 /*
510 * According to VMWARE headers this statistic is a number
511 * of packets after segmentation but since we don't have
512 * this information in QEMU model, the best we can do is to
513 * provide number of non-segmented packets
514 */
515 stats->TSOPktsTxOK++;
516 stats->TSOBytesTxOK += tot_len;
517 }
518 break;
519
520 case VMXNET3_PKT_STATUS_DISCARD:
521 stats->pktsTxDiscard++;
522 break;
523
524 case VMXNET3_PKT_STATUS_ERROR:
525 stats->pktsTxError++;
526 break;
527
528 default:
529 g_assert_not_reached();
530 }
531 }
532
533 static void
534 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
535 int qidx,
536 Vmxnet3PktStatus status)
537 {
538 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
539 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
540
541 switch (status) {
542 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
543 stats->pktsRxOutOfBuf++;
544 break;
545
546 case VMXNET3_PKT_STATUS_ERROR:
547 stats->pktsRxError++;
548 break;
549 case VMXNET3_PKT_STATUS_OK:
550 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
551 case ETH_PKT_BCAST:
552 stats->bcastPktsRxOK++;
553 stats->bcastBytesRxOK += tot_len;
554 break;
555 case ETH_PKT_MCAST:
556 stats->mcastPktsRxOK++;
557 stats->mcastBytesRxOK += tot_len;
558 break;
559 case ETH_PKT_UCAST:
560 stats->ucastPktsRxOK++;
561 stats->ucastBytesRxOK += tot_len;
562 break;
563 default:
564 g_assert_not_reached();
565 }
566
567 if (tot_len > s->mtu) {
568 stats->LROPktsRxOK++;
569 stats->LROBytesRxOK += tot_len;
570 }
571 break;
572 default:
573 g_assert_not_reached();
574 }
575 }
576
577 static inline void
578 vmxnet3_ring_read_curr_txdesc(PCIDevice *pcidev, Vmxnet3Ring *ring,
579 struct Vmxnet3_TxDesc *txd)
580 {
581 vmxnet3_ring_read_curr_cell(pcidev, ring, txd);
582 txd->addr = le64_to_cpu(txd->addr);
583 txd->val1 = le32_to_cpu(txd->val1);
584 txd->val2 = le32_to_cpu(txd->val2);
585 }
586
587 static inline bool
588 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
589 int qidx,
590 struct Vmxnet3_TxDesc *txd,
591 uint32_t *descr_idx)
592 {
593 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
594 PCIDevice *d = PCI_DEVICE(s);
595
596 vmxnet3_ring_read_curr_txdesc(d, ring, txd);
597 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
598 /* Only read after generation field verification */
599 smp_rmb();
600 /* Re-read to be sure we got the latest version */
601 vmxnet3_ring_read_curr_txdesc(d, ring, txd);
602 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
603 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
604 vmxnet3_inc_tx_consumption_counter(s, qidx);
605 return true;
606 }
607
608 return false;
609 }
610
611 static bool
612 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
613 {
614 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
615
616 if (!vmxnet3_setup_tx_offloads(s)) {
617 status = VMXNET3_PKT_STATUS_ERROR;
618 goto func_exit;
619 }
620
621 /* debug prints */
622 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
623 net_tx_pkt_dump(s->tx_pkt);
624
625 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
626 status = VMXNET3_PKT_STATUS_DISCARD;
627 goto func_exit;
628 }
629
630 func_exit:
631 vmxnet3_on_tx_done_update_stats(s, qidx, status);
632 return (status == VMXNET3_PKT_STATUS_OK);
633 }
634
635 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
636 {
637 struct Vmxnet3_TxDesc txd;
638 uint32_t txd_idx;
639 uint32_t data_len;
640 hwaddr data_pa;
641
642 for (;;) {
643 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
644 break;
645 }
646
647 vmxnet3_dump_tx_descr(&txd);
648
649 if (!s->skip_current_tx_pkt) {
650 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
651 data_pa = txd.addr;
652
653 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
654 data_pa,
655 data_len)) {
656 s->skip_current_tx_pkt = true;
657 }
658 }
659
660 if (s->tx_sop) {
661 vmxnet3_tx_retrieve_metadata(s, &txd);
662 s->tx_sop = false;
663 }
664
665 if (txd.eop) {
666 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
667 if (s->needs_vlan) {
668 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
669 }
670
671 vmxnet3_send_packet(s, qidx);
672 } else {
673 vmxnet3_on_tx_done_update_stats(s, qidx,
674 VMXNET3_PKT_STATUS_ERROR);
675 }
676
677 vmxnet3_complete_packet(s, qidx, txd_idx);
678 s->tx_sop = true;
679 s->skip_current_tx_pkt = false;
680 net_tx_pkt_reset(s->tx_pkt);
681 }
682 }
683 }
684
685 static inline void
686 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
687 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
688 {
689 PCIDevice *d = PCI_DEVICE(s);
690
691 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
692 *didx = vmxnet3_ring_curr_cell_idx(ring);
693 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
694 dbuf->addr = le64_to_cpu(dbuf->addr);
695 dbuf->val1 = le32_to_cpu(dbuf->val1);
696 dbuf->ext1 = le32_to_cpu(dbuf->ext1);
697 }
698
699 static inline uint8_t
700 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
701 {
702 return s->rxq_descr[qidx].rx_ring[ridx].gen;
703 }
704
705 static inline hwaddr
706 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
707 {
708 uint8_t ring_gen;
709 struct Vmxnet3_RxCompDesc rxcd;
710
711 hwaddr daddr =
712 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
713
714 pci_dma_read(PCI_DEVICE(s),
715 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
716 rxcd.val1 = le32_to_cpu(rxcd.val1);
717 rxcd.val2 = le32_to_cpu(rxcd.val2);
718 rxcd.val3 = le32_to_cpu(rxcd.val3);
719 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
720
721 if (rxcd.gen != ring_gen) {
722 *descr_gen = ring_gen;
723 vmxnet3_inc_rx_completion_counter(s, qidx);
724 return daddr;
725 }
726
727 return 0;
728 }
729
730 static inline void
731 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
732 {
733 vmxnet3_dec_rx_completion_counter(s, qidx);
734 }
735
736 #define RXQ_IDX (0)
737 #define RX_HEAD_BODY_RING (0)
738 #define RX_BODY_ONLY_RING (1)
739
740 static bool
741 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
742 struct Vmxnet3_RxDesc *descr_buf,
743 uint32_t *descr_idx,
744 uint32_t *ridx)
745 {
746 for (;;) {
747 uint32_t ring_gen;
748 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
749 descr_buf, descr_idx);
750
751 /* If no more free descriptors - return */
752 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
753 if (descr_buf->gen != ring_gen) {
754 return false;
755 }
756
757 /* Only read after generation field verification */
758 smp_rmb();
759 /* Re-read to be sure we got the latest version */
760 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
761 descr_buf, descr_idx);
762
763 /* Mark current descriptor as used/skipped */
764 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
765
766 /* If this is what we are looking for - return */
767 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
768 *ridx = RX_HEAD_BODY_RING;
769 return true;
770 }
771 }
772 }
773
774 static bool
775 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
776 struct Vmxnet3_RxDesc *d,
777 uint32_t *didx,
778 uint32_t *ridx)
779 {
780 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
781
782 /* Try to find corresponding descriptor in head/body ring */
783 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
784 /* Only read after generation field verification */
785 smp_rmb();
786 /* Re-read to be sure we got the latest version */
787 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
788 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
789 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
790 *ridx = RX_HEAD_BODY_RING;
791 return true;
792 }
793 }
794
795 /*
796 * If there is no free descriptors on head/body ring or next free
797 * descriptor is a head descriptor switch to body only ring
798 */
799 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
800
801 /* If no more free descriptors - return */
802 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
803 /* Only read after generation field verification */
804 smp_rmb();
805 /* Re-read to be sure we got the latest version */
806 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
807 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
808 *ridx = RX_BODY_ONLY_RING;
809 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
810 return true;
811 }
812
813 return false;
814 }
815
816 static inline bool
817 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
818 struct Vmxnet3_RxDesc *descr_buf,
819 uint32_t *descr_idx,
820 uint32_t *ridx)
821 {
822 if (is_head || !s->rx_packets_compound) {
823 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
824 } else {
825 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
826 }
827 }
828
829 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
830 * the implementation always passes an RxCompDesc with a "Checksum
831 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
832 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
833 *
834 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
835 * and place a fully computed checksum into the tcp/udp header.
836 * Otherwise, the OS driver will receive a checksum-correct indication
837 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
838 * having just the pseudo header csum value.
839 *
840 * While this is not a problem if packet is destined for local delivery,
841 * in the case the host OS performs forwarding, it will forward an
842 * incorrectly checksummed packet.
843 */
844 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
845 const void *pkt_data,
846 size_t pkt_len)
847 {
848 struct virtio_net_hdr *vhdr;
849 bool isip4, isip6, istcp, isudp;
850 uint8_t *data;
851 int len;
852
853 if (!net_rx_pkt_has_virt_hdr(pkt)) {
854 return;
855 }
856
857 vhdr = net_rx_pkt_get_vhdr(pkt);
858 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
859 return;
860 }
861
862 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
863 if (!(isip4 || isip6) || !(istcp || isudp)) {
864 return;
865 }
866
867 vmxnet3_dump_virt_hdr(vhdr);
868
869 /* Validate packet len: csum_start + scum_offset + length of csum field */
870 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
871 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
872 "cannot calculate checksum",
873 pkt_len, vhdr->csum_start, vhdr->csum_offset);
874 return;
875 }
876
877 data = (uint8_t *)pkt_data + vhdr->csum_start;
878 len = pkt_len - vhdr->csum_start;
879 /* Put the checksum obtained into the packet */
880 stw_be_p(data + vhdr->csum_offset,
881 net_checksum_finish_nozero(net_checksum_add(len, data)));
882
883 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
884 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
885 }
886
887 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
888 struct Vmxnet3_RxCompDesc *rxcd)
889 {
890 int csum_ok, is_gso;
891 bool isip4, isip6, istcp, isudp;
892 struct virtio_net_hdr *vhdr;
893 uint8_t offload_type;
894
895 if (net_rx_pkt_is_vlan_stripped(pkt)) {
896 rxcd->ts = 1;
897 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
898 }
899
900 if (!net_rx_pkt_has_virt_hdr(pkt)) {
901 goto nocsum;
902 }
903
904 vhdr = net_rx_pkt_get_vhdr(pkt);
905 /*
906 * Checksum is valid when lower level tell so or when lower level
907 * requires checksum offload telling that packet produced/bridged
908 * locally and did travel over network after last checksum calculation
909 * or production
910 */
911 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
912 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
913
914 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
915 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
916
917 if (!csum_ok && !is_gso) {
918 goto nocsum;
919 }
920
921 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
922 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
923 goto nocsum;
924 }
925
926 rxcd->cnc = 0;
927 rxcd->v4 = isip4 ? 1 : 0;
928 rxcd->v6 = isip6 ? 1 : 0;
929 rxcd->tcp = istcp ? 1 : 0;
930 rxcd->udp = isudp ? 1 : 0;
931 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
932 return;
933
934 nocsum:
935 rxcd->cnc = 1;
936 return;
937 }
938
939 static void
940 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
941 const struct iovec *iov,
942 size_t start_iov_off,
943 hwaddr target_addr,
944 size_t bytes_to_copy)
945 {
946 size_t curr_off = 0;
947 size_t copied = 0;
948
949 while (bytes_to_copy) {
950 if (start_iov_off < (curr_off + iov->iov_len)) {
951 size_t chunk_len =
952 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
953
954 pci_dma_write(pci_dev, target_addr + copied,
955 iov->iov_base + start_iov_off - curr_off,
956 chunk_len);
957
958 copied += chunk_len;
959 start_iov_off += chunk_len;
960 curr_off = start_iov_off;
961 bytes_to_copy -= chunk_len;
962 } else {
963 curr_off += iov->iov_len;
964 }
965 iov++;
966 }
967 }
968
969 static void
970 vmxnet3_pci_dma_write_rxcd(PCIDevice *pcidev, dma_addr_t pa,
971 struct Vmxnet3_RxCompDesc *rxcd)
972 {
973 rxcd->val1 = cpu_to_le32(rxcd->val1);
974 rxcd->val2 = cpu_to_le32(rxcd->val2);
975 rxcd->val3 = cpu_to_le32(rxcd->val3);
976 pci_dma_write(pcidev, pa, rxcd, sizeof(*rxcd));
977 }
978
979 static bool
980 vmxnet3_indicate_packet(VMXNET3State *s)
981 {
982 struct Vmxnet3_RxDesc rxd;
983 PCIDevice *d = PCI_DEVICE(s);
984 bool is_head = true;
985 uint32_t rxd_idx;
986 uint32_t rx_ridx = 0;
987
988 struct Vmxnet3_RxCompDesc rxcd;
989 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
990 hwaddr new_rxcd_pa = 0;
991 hwaddr ready_rxcd_pa = 0;
992 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
993 size_t bytes_copied = 0;
994 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
995 uint16_t num_frags = 0;
996 size_t chunk_size;
997
998 net_rx_pkt_dump(s->rx_pkt);
999
1000 while (bytes_left > 0) {
1001
1002 /* cannot add more frags to packet */
1003 if (num_frags == s->max_rx_frags) {
1004 break;
1005 }
1006
1007 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1008 if (!new_rxcd_pa) {
1009 break;
1010 }
1011
1012 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1013 break;
1014 }
1015
1016 chunk_size = MIN(bytes_left, rxd.len);
1017 vmxnet3_pci_dma_writev(d, data, bytes_copied, rxd.addr, chunk_size);
1018 bytes_copied += chunk_size;
1019 bytes_left -= chunk_size;
1020
1021 vmxnet3_dump_rx_descr(&rxd);
1022
1023 if (ready_rxcd_pa != 0) {
1024 vmxnet3_pci_dma_write_rxcd(d, ready_rxcd_pa, &rxcd);
1025 }
1026
1027 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1028 rxcd.rxdIdx = rxd_idx;
1029 rxcd.len = chunk_size;
1030 rxcd.sop = is_head;
1031 rxcd.gen = new_rxcd_gen;
1032 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1033
1034 if (bytes_left == 0) {
1035 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1036 }
1037
1038 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1039 "sop %d csum_correct %lu",
1040 (unsigned long) rx_ridx,
1041 (unsigned long) rxcd.rxdIdx,
1042 (unsigned long) rxcd.len,
1043 (int) rxcd.sop,
1044 (unsigned long) rxcd.tuc);
1045
1046 is_head = false;
1047 ready_rxcd_pa = new_rxcd_pa;
1048 new_rxcd_pa = 0;
1049 num_frags++;
1050 }
1051
1052 if (ready_rxcd_pa != 0) {
1053 rxcd.eop = 1;
1054 rxcd.err = (bytes_left != 0);
1055
1056 vmxnet3_pci_dma_write_rxcd(d, ready_rxcd_pa, &rxcd);
1057
1058 /* Flush RX descriptor changes */
1059 smp_wmb();
1060 }
1061
1062 if (new_rxcd_pa != 0) {
1063 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1064 }
1065
1066 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1067
1068 if (bytes_left == 0) {
1069 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1070 return true;
1071 } else if (num_frags == s->max_rx_frags) {
1072 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1073 return false;
1074 } else {
1075 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1076 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1077 return false;
1078 }
1079 }
1080
1081 static void
1082 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1083 uint64_t val, unsigned size)
1084 {
1085 VMXNET3State *s = opaque;
1086
1087 if (!s->device_active) {
1088 return;
1089 }
1090
1091 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1092 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1093 int tx_queue_idx =
1094 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1095 VMXNET3_REG_ALIGN);
1096 assert(tx_queue_idx <= s->txq_num);
1097 vmxnet3_process_tx_queue(s, tx_queue_idx);
1098 return;
1099 }
1100
1101 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1102 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1103 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1104 VMXNET3_REG_ALIGN);
1105
1106 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1107
1108 vmxnet3_on_interrupt_mask_changed(s, l, val);
1109 return;
1110 }
1111
1112 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1113 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1114 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1115 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1116 return;
1117 }
1118
1119 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1120 (uint64_t) addr, val, size);
1121 }
1122
1123 static uint64_t
1124 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1125 {
1126 VMXNET3State *s = opaque;
1127
1128 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1129 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1130 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1131 VMXNET3_REG_ALIGN);
1132 return s->interrupt_states[l].is_masked;
1133 }
1134
1135 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1136 return 0;
1137 }
1138
1139 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1140 {
1141 int i;
1142 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1143 s->interrupt_states[i].is_asserted = false;
1144 s->interrupt_states[i].is_pending = false;
1145 s->interrupt_states[i].is_masked = true;
1146 }
1147 }
1148
1149 static void vmxnet3_reset_mac(VMXNET3State *s)
1150 {
1151 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1152 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1153 }
1154
1155 static void vmxnet3_deactivate_device(VMXNET3State *s)
1156 {
1157 if (s->device_active) {
1158 VMW_CBPRN("Deactivating vmxnet3...");
1159 net_tx_pkt_reset(s->tx_pkt);
1160 net_tx_pkt_uninit(s->tx_pkt);
1161 net_rx_pkt_uninit(s->rx_pkt);
1162 s->device_active = false;
1163 }
1164 }
1165
1166 static void vmxnet3_reset(VMXNET3State *s)
1167 {
1168 VMW_CBPRN("Resetting vmxnet3...");
1169
1170 vmxnet3_deactivate_device(s);
1171 vmxnet3_reset_interrupt_states(s);
1172 s->drv_shmem = 0;
1173 s->tx_sop = true;
1174 s->skip_current_tx_pkt = false;
1175 }
1176
1177 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1178 {
1179 PCIDevice *d = PCI_DEVICE(s);
1180
1181 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1182 devRead.rxFilterConf.rxMode);
1183 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1184 }
1185
1186 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1187 {
1188 int i;
1189 PCIDevice *d = PCI_DEVICE(s);
1190
1191 /* Copy configuration from shared memory */
1192 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1193 devRead.rxFilterConf.vfTable,
1194 s->vlan_table,
1195 sizeof(s->vlan_table));
1196
1197 /* Invert byte order when needed */
1198 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1199 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1200 }
1201
1202 /* Dump configuration for debugging purposes */
1203 VMW_CFPRN("Configured VLANs:");
1204 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1205 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1206 VMW_CFPRN("\tVLAN %d is present", i);
1207 }
1208 }
1209 }
1210
1211 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1212 {
1213 PCIDevice *d = PCI_DEVICE(s);
1214
1215 uint16_t list_bytes =
1216 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1217 devRead.rxFilterConf.mfTableLen);
1218
1219 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1220
1221 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1222 if (!s->mcast_list) {
1223 if (s->mcast_list_len == 0) {
1224 VMW_CFPRN("Current multicast list is empty");
1225 } else {
1226 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1227 s->mcast_list_len);
1228 }
1229 s->mcast_list_len = 0;
1230 } else {
1231 int i;
1232 hwaddr mcast_list_pa =
1233 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1234 devRead.rxFilterConf.mfTablePA);
1235
1236 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1237
1238 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1239 for (i = 0; i < s->mcast_list_len; i++) {
1240 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1241 }
1242 }
1243 }
1244
1245 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1246 {
1247 vmxnet3_update_rx_mode(s);
1248 vmxnet3_update_vlan_filters(s);
1249 vmxnet3_update_mcast_filters(s);
1250 }
1251
1252 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1253 {
1254 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1255 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1256 return interrupt_mode;
1257 }
1258
1259 static void vmxnet3_fill_stats(VMXNET3State *s)
1260 {
1261 int i;
1262 PCIDevice *d = PCI_DEVICE(s);
1263
1264 if (!s->device_active)
1265 return;
1266
1267 for (i = 0; i < s->txq_num; i++) {
1268 pci_dma_write(d,
1269 s->txq_descr[i].tx_stats_pa,
1270 &s->txq_descr[i].txq_stats,
1271 sizeof(s->txq_descr[i].txq_stats));
1272 }
1273
1274 for (i = 0; i < s->rxq_num; i++) {
1275 pci_dma_write(d,
1276 s->rxq_descr[i].rx_stats_pa,
1277 &s->rxq_descr[i].rxq_stats,
1278 sizeof(s->rxq_descr[i].rxq_stats));
1279 }
1280 }
1281
1282 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1283 {
1284 struct Vmxnet3_GOSInfo gos;
1285 PCIDevice *d = PCI_DEVICE(s);
1286
1287 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1288 &gos, sizeof(gos));
1289 s->rx_packets_compound =
1290 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1291
1292 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1293 }
1294
1295 static void
1296 vmxnet3_dump_conf_descr(const char *name,
1297 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1298 {
1299 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1300 name, pm_descr->confVer, pm_descr->confLen);
1301
1302 };
1303
1304 static void vmxnet3_update_pm_state(VMXNET3State *s)
1305 {
1306 struct Vmxnet3_VariableLenConfDesc pm_descr;
1307 PCIDevice *d = PCI_DEVICE(s);
1308
1309 pm_descr.confLen =
1310 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1311 pm_descr.confVer =
1312 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1313 pm_descr.confPA =
1314 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1315
1316 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1317 }
1318
1319 static void vmxnet3_update_features(VMXNET3State *s)
1320 {
1321 uint32_t guest_features;
1322 int rxcso_supported;
1323 PCIDevice *d = PCI_DEVICE(s);
1324
1325 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1326 devRead.misc.uptFeatures);
1327
1328 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1329 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1330 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1331
1332 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1333 s->lro_supported, rxcso_supported,
1334 s->rx_vlan_stripping);
1335 if (s->peer_has_vhdr) {
1336 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1337 rxcso_supported,
1338 s->lro_supported,
1339 s->lro_supported,
1340 0,
1341 0);
1342 }
1343 }
1344
1345 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1346 {
1347 return s->msix_used || msi_enabled(PCI_DEVICE(s))
1348 || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1;
1349 }
1350
1351 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1352 {
1353 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1354 if (idx >= max_ints) {
1355 hw_error("Bad interrupt index: %d\n", idx);
1356 }
1357 }
1358
1359 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1360 {
1361 int i;
1362
1363 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1364 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1365
1366 for (i = 0; i < s->txq_num; i++) {
1367 int idx = s->txq_descr[i].intr_idx;
1368 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1369 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1370 }
1371
1372 for (i = 0; i < s->rxq_num; i++) {
1373 int idx = s->rxq_descr[i].intr_idx;
1374 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1375 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1376 }
1377 }
1378
1379 static void vmxnet3_validate_queues(VMXNET3State *s)
1380 {
1381 /*
1382 * txq_num and rxq_num are total number of queues
1383 * configured by guest. These numbers must not
1384 * exceed corresponding maximal values.
1385 */
1386
1387 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1388 hw_error("Bad TX queues number: %d\n", s->txq_num);
1389 }
1390
1391 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1392 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1393 }
1394 }
1395
1396 static void vmxnet3_activate_device(VMXNET3State *s)
1397 {
1398 int i;
1399 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1400 PCIDevice *d = PCI_DEVICE(s);
1401 hwaddr qdescr_table_pa;
1402 uint64_t pa;
1403 uint32_t size;
1404
1405 /* Verify configuration consistency */
1406 if (!vmxnet3_verify_driver_magic(d, s->drv_shmem)) {
1407 VMW_ERPRN("Device configuration received from driver is invalid");
1408 return;
1409 }
1410
1411 /* Verify if device is active */
1412 if (s->device_active) {
1413 VMW_CFPRN("Vmxnet3 device is active");
1414 return;
1415 }
1416
1417 vmxnet3_adjust_by_guest_type(s);
1418 vmxnet3_update_features(s);
1419 vmxnet3_update_pm_state(s);
1420 vmxnet3_setup_rx_filtering(s);
1421 /* Cache fields from shared memory */
1422 s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
1423 VMW_CFPRN("MTU is %u", s->mtu);
1424
1425 s->max_rx_frags =
1426 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1427
1428 if (s->max_rx_frags == 0) {
1429 s->max_rx_frags = 1;
1430 }
1431
1432 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1433
1434 s->event_int_idx =
1435 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1436 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1437 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1438
1439 s->auto_int_masking =
1440 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1441 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1442
1443 s->txq_num =
1444 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numTxQueues);
1445 s->rxq_num =
1446 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numRxQueues);
1447
1448 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1449 vmxnet3_validate_queues(s);
1450
1451 qdescr_table_pa =
1452 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1453 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1454
1455 /*
1456 * Worst-case scenario is a packet that holds all TX rings space so
1457 * we calculate total size of all TX rings for max TX fragments number
1458 */
1459 s->max_tx_frags = 0;
1460
1461 /* TX queues */
1462 for (i = 0; i < s->txq_num; i++) {
1463 hwaddr qdescr_pa =
1464 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1465
1466 /* Read interrupt number for this TX queue */
1467 s->txq_descr[i].intr_idx =
1468 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1469 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1470
1471 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1472
1473 /* Read rings memory locations for TX queues */
1474 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1475 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1476
1477 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1478 sizeof(struct Vmxnet3_TxDesc), false);
1479 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1480
1481 s->max_tx_frags += size;
1482
1483 /* TXC ring */
1484 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1485 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1486 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1487 sizeof(struct Vmxnet3_TxCompDesc), true);
1488 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1489
1490 s->txq_descr[i].tx_stats_pa =
1491 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1492
1493 memset(&s->txq_descr[i].txq_stats, 0,
1494 sizeof(s->txq_descr[i].txq_stats));
1495
1496 /* Fill device-managed parameters for queues */
1497 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1498 ctrl.txThreshold,
1499 VMXNET3_DEF_TX_THRESHOLD);
1500 }
1501
1502 /* Preallocate TX packet wrapper */
1503 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1504 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1505 s->max_tx_frags, s->peer_has_vhdr);
1506 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1507
1508 /* Read rings memory locations for RX queues */
1509 for (i = 0; i < s->rxq_num; i++) {
1510 int j;
1511 hwaddr qd_pa =
1512 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1513 i * sizeof(struct Vmxnet3_RxQueueDesc);
1514
1515 /* Read interrupt number for this RX queue */
1516 s->rxq_descr[i].intr_idx =
1517 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1518 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1519
1520 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1521
1522 /* Read rings memory locations */
1523 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1524 /* RX rings */
1525 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1526 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1527 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1528 sizeof(struct Vmxnet3_RxDesc), false);
1529 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1530 i, j, pa, size);
1531 }
1532
1533 /* RXC ring */
1534 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1535 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1536 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1537 sizeof(struct Vmxnet3_RxCompDesc), true);
1538 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1539
1540 s->rxq_descr[i].rx_stats_pa =
1541 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1542 memset(&s->rxq_descr[i].rxq_stats, 0,
1543 sizeof(s->rxq_descr[i].rxq_stats));
1544 }
1545
1546 vmxnet3_validate_interrupts(s);
1547
1548 /* Make sure everything is in place before device activation */
1549 smp_wmb();
1550
1551 vmxnet3_reset_mac(s);
1552
1553 s->device_active = true;
1554 }
1555
1556 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1557 {
1558 s->last_command = cmd;
1559
1560 switch (cmd) {
1561 case VMXNET3_CMD_GET_PERM_MAC_HI:
1562 VMW_CBPRN("Set: Get upper part of permanent MAC");
1563 break;
1564
1565 case VMXNET3_CMD_GET_PERM_MAC_LO:
1566 VMW_CBPRN("Set: Get lower part of permanent MAC");
1567 break;
1568
1569 case VMXNET3_CMD_GET_STATS:
1570 VMW_CBPRN("Set: Get device statistics");
1571 vmxnet3_fill_stats(s);
1572 break;
1573
1574 case VMXNET3_CMD_ACTIVATE_DEV:
1575 VMW_CBPRN("Set: Activating vmxnet3 device");
1576 vmxnet3_activate_device(s);
1577 break;
1578
1579 case VMXNET3_CMD_UPDATE_RX_MODE:
1580 VMW_CBPRN("Set: Update rx mode");
1581 vmxnet3_update_rx_mode(s);
1582 break;
1583
1584 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1585 VMW_CBPRN("Set: Update VLAN filters");
1586 vmxnet3_update_vlan_filters(s);
1587 break;
1588
1589 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1590 VMW_CBPRN("Set: Update MAC filters");
1591 vmxnet3_update_mcast_filters(s);
1592 break;
1593
1594 case VMXNET3_CMD_UPDATE_FEATURE:
1595 VMW_CBPRN("Set: Update features");
1596 vmxnet3_update_features(s);
1597 break;
1598
1599 case VMXNET3_CMD_UPDATE_PMCFG:
1600 VMW_CBPRN("Set: Update power management config");
1601 vmxnet3_update_pm_state(s);
1602 break;
1603
1604 case VMXNET3_CMD_GET_LINK:
1605 VMW_CBPRN("Set: Get link");
1606 break;
1607
1608 case VMXNET3_CMD_RESET_DEV:
1609 VMW_CBPRN("Set: Reset device");
1610 vmxnet3_reset(s);
1611 break;
1612
1613 case VMXNET3_CMD_QUIESCE_DEV:
1614 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1615 vmxnet3_deactivate_device(s);
1616 break;
1617
1618 case VMXNET3_CMD_GET_CONF_INTR:
1619 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1620 break;
1621
1622 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1623 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1624 "adaptive ring info flags");
1625 break;
1626
1627 case VMXNET3_CMD_GET_DID_LO:
1628 VMW_CBPRN("Set: Get lower part of device ID");
1629 break;
1630
1631 case VMXNET3_CMD_GET_DID_HI:
1632 VMW_CBPRN("Set: Get upper part of device ID");
1633 break;
1634
1635 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1636 VMW_CBPRN("Set: Get device extra info");
1637 break;
1638
1639 default:
1640 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1641 break;
1642 }
1643 }
1644
1645 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1646 {
1647 uint64_t ret;
1648
1649 switch (s->last_command) {
1650 case VMXNET3_CMD_ACTIVATE_DEV:
1651 ret = (s->device_active) ? 0 : 1;
1652 VMW_CFPRN("Device active: %" PRIx64, ret);
1653 break;
1654
1655 case VMXNET3_CMD_RESET_DEV:
1656 case VMXNET3_CMD_QUIESCE_DEV:
1657 case VMXNET3_CMD_GET_QUEUE_STATUS:
1658 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1659 ret = 0;
1660 break;
1661
1662 case VMXNET3_CMD_GET_LINK:
1663 ret = s->link_status_and_speed;
1664 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1665 break;
1666
1667 case VMXNET3_CMD_GET_PERM_MAC_LO:
1668 ret = vmxnet3_get_mac_low(&s->perm_mac);
1669 break;
1670
1671 case VMXNET3_CMD_GET_PERM_MAC_HI:
1672 ret = vmxnet3_get_mac_high(&s->perm_mac);
1673 break;
1674
1675 case VMXNET3_CMD_GET_CONF_INTR:
1676 ret = vmxnet3_get_interrupt_config(s);
1677 break;
1678
1679 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1680 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1681 break;
1682
1683 case VMXNET3_CMD_GET_DID_LO:
1684 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1685 break;
1686
1687 case VMXNET3_CMD_GET_DID_HI:
1688 ret = VMXNET3_DEVICE_REVISION;
1689 break;
1690
1691 default:
1692 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1693 ret = 0;
1694 break;
1695 }
1696
1697 return ret;
1698 }
1699
1700 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1701 {
1702 uint32_t events;
1703 PCIDevice *d = PCI_DEVICE(s);
1704
1705 VMW_CBPRN("Setting events: 0x%x", val);
1706 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1707 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1708 }
1709
1710 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1711 {
1712 PCIDevice *d = PCI_DEVICE(s);
1713 uint32_t events;
1714
1715 VMW_CBPRN("Clearing events: 0x%x", val);
1716 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1717 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1718 }
1719
1720 static void
1721 vmxnet3_io_bar1_write(void *opaque,
1722 hwaddr addr,
1723 uint64_t val,
1724 unsigned size)
1725 {
1726 VMXNET3State *s = opaque;
1727
1728 switch (addr) {
1729 /* Vmxnet3 Revision Report Selection */
1730 case VMXNET3_REG_VRRS:
1731 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1732 val, size);
1733 break;
1734
1735 /* UPT Version Report Selection */
1736 case VMXNET3_REG_UVRS:
1737 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1738 val, size);
1739 break;
1740
1741 /* Driver Shared Address Low */
1742 case VMXNET3_REG_DSAL:
1743 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1744 val, size);
1745 /*
1746 * Guest driver will first write the low part of the shared
1747 * memory address. We save it to temp variable and set the
1748 * shared address only after we get the high part
1749 */
1750 if (val == 0) {
1751 vmxnet3_deactivate_device(s);
1752 }
1753 s->temp_shared_guest_driver_memory = val;
1754 s->drv_shmem = 0;
1755 break;
1756
1757 /* Driver Shared Address High */
1758 case VMXNET3_REG_DSAH:
1759 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1760 val, size);
1761 /*
1762 * Set the shared memory between guest driver and device.
1763 * We already should have low address part.
1764 */
1765 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1766 break;
1767
1768 /* Command */
1769 case VMXNET3_REG_CMD:
1770 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1771 val, size);
1772 vmxnet3_handle_command(s, val);
1773 break;
1774
1775 /* MAC Address Low */
1776 case VMXNET3_REG_MACL:
1777 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1778 val, size);
1779 s->temp_mac = val;
1780 break;
1781
1782 /* MAC Address High */
1783 case VMXNET3_REG_MACH:
1784 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1785 val, size);
1786 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1787 break;
1788
1789 /* Interrupt Cause Register */
1790 case VMXNET3_REG_ICR:
1791 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1792 val, size);
1793 g_assert_not_reached();
1794 break;
1795
1796 /* Event Cause Register */
1797 case VMXNET3_REG_ECR:
1798 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1799 val, size);
1800 vmxnet3_ack_events(s, val);
1801 break;
1802
1803 default:
1804 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1805 addr, val, size);
1806 break;
1807 }
1808 }
1809
1810 static uint64_t
1811 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1812 {
1813 VMXNET3State *s = opaque;
1814 uint64_t ret = 0;
1815
1816 switch (addr) {
1817 /* Vmxnet3 Revision Report Selection */
1818 case VMXNET3_REG_VRRS:
1819 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1820 ret = VMXNET3_DEVICE_REVISION;
1821 break;
1822
1823 /* UPT Version Report Selection */
1824 case VMXNET3_REG_UVRS:
1825 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1826 ret = VMXNET3_UPT_REVISION;
1827 break;
1828
1829 /* Command */
1830 case VMXNET3_REG_CMD:
1831 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1832 ret = vmxnet3_get_command_status(s);
1833 break;
1834
1835 /* MAC Address Low */
1836 case VMXNET3_REG_MACL:
1837 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1838 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1839 break;
1840
1841 /* MAC Address High */
1842 case VMXNET3_REG_MACH:
1843 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1844 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1845 break;
1846
1847 /*
1848 * Interrupt Cause Register
1849 * Used for legacy interrupts only so interrupt index always 0
1850 */
1851 case VMXNET3_REG_ICR:
1852 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1853 if (vmxnet3_interrupt_asserted(s, 0)) {
1854 vmxnet3_clear_interrupt(s, 0);
1855 ret = true;
1856 } else {
1857 ret = false;
1858 }
1859 break;
1860
1861 default:
1862 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1863 break;
1864 }
1865
1866 return ret;
1867 }
1868
1869 static int
1870 vmxnet3_can_receive(NetClientState *nc)
1871 {
1872 VMXNET3State *s = qemu_get_nic_opaque(nc);
1873 return s->device_active &&
1874 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1875 }
1876
1877 static inline bool
1878 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1879 {
1880 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1881 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1882 return true;
1883 }
1884
1885 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1886 }
1887
1888 static bool
1889 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1890 {
1891 int i;
1892 for (i = 0; i < s->mcast_list_len; i++) {
1893 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1894 return true;
1895 }
1896 }
1897 return false;
1898 }
1899
1900 static bool
1901 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1902 size_t size)
1903 {
1904 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1905
1906 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1907 return true;
1908 }
1909
1910 if (!vmxnet3_is_registered_vlan(s, data)) {
1911 return false;
1912 }
1913
1914 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1915 case ETH_PKT_UCAST:
1916 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1917 return false;
1918 }
1919 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1920 return false;
1921 }
1922 break;
1923
1924 case ETH_PKT_BCAST:
1925 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
1926 return false;
1927 }
1928 break;
1929
1930 case ETH_PKT_MCAST:
1931 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
1932 return true;
1933 }
1934 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
1935 return false;
1936 }
1937 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
1938 return false;
1939 }
1940 break;
1941
1942 default:
1943 g_assert_not_reached();
1944 }
1945
1946 return true;
1947 }
1948
1949 static ssize_t
1950 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
1951 {
1952 VMXNET3State *s = qemu_get_nic_opaque(nc);
1953 size_t bytes_indicated;
1954 uint8_t min_buf[MIN_BUF_SIZE];
1955
1956 if (!vmxnet3_can_receive(nc)) {
1957 VMW_PKPRN("Cannot receive now");
1958 return -1;
1959 }
1960
1961 if (s->peer_has_vhdr) {
1962 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
1963 buf += sizeof(struct virtio_net_hdr);
1964 size -= sizeof(struct virtio_net_hdr);
1965 }
1966
1967 /* Pad to minimum Ethernet frame length */
1968 if (size < sizeof(min_buf)) {
1969 memcpy(min_buf, buf, size);
1970 memset(&min_buf[size], 0, sizeof(min_buf) - size);
1971 buf = min_buf;
1972 size = sizeof(min_buf);
1973 }
1974
1975 net_rx_pkt_set_packet_type(s->rx_pkt,
1976 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
1977
1978 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
1979 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
1980 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
1981 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
1982 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
1983 if (bytes_indicated < size) {
1984 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
1985 }
1986 } else {
1987 VMW_PKPRN("Packet dropped by RX filter");
1988 bytes_indicated = size;
1989 }
1990
1991 assert(size > 0);
1992 assert(bytes_indicated != 0);
1993 return bytes_indicated;
1994 }
1995
1996 static void vmxnet3_set_link_status(NetClientState *nc)
1997 {
1998 VMXNET3State *s = qemu_get_nic_opaque(nc);
1999
2000 if (nc->link_down) {
2001 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2002 } else {
2003 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2004 }
2005
2006 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2007 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2008 }
2009
2010 static NetClientInfo net_vmxnet3_info = {
2011 .type = NET_CLIENT_DRIVER_NIC,
2012 .size = sizeof(NICState),
2013 .receive = vmxnet3_receive,
2014 .link_status_changed = vmxnet3_set_link_status,
2015 };
2016
2017 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2018 {
2019 NetClientState *nc = qemu_get_queue(s->nic);
2020
2021 if (qemu_has_vnet_hdr(nc->peer)) {
2022 return true;
2023 }
2024
2025 return false;
2026 }
2027
2028 static void vmxnet3_net_uninit(VMXNET3State *s)
2029 {
2030 g_free(s->mcast_list);
2031 vmxnet3_deactivate_device(s);
2032 qemu_del_nic(s->nic);
2033 }
2034
2035 static void vmxnet3_net_init(VMXNET3State *s)
2036 {
2037 DeviceState *d = DEVICE(s);
2038
2039 VMW_CBPRN("vmxnet3_net_init called...");
2040
2041 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2042
2043 /* Windows guest will query the address that was set on init */
2044 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2045
2046 s->mcast_list = NULL;
2047 s->mcast_list_len = 0;
2048
2049 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2050
2051 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2052
2053 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2054 object_get_typename(OBJECT(s)),
2055 d->id, s);
2056
2057 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2058 s->tx_sop = true;
2059 s->skip_current_tx_pkt = false;
2060 s->tx_pkt = NULL;
2061 s->rx_pkt = NULL;
2062 s->rx_vlan_stripping = false;
2063 s->lro_supported = false;
2064
2065 if (s->peer_has_vhdr) {
2066 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2067 sizeof(struct virtio_net_hdr));
2068
2069 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2070 }
2071
2072 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2073 }
2074
2075 static void
2076 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2077 {
2078 PCIDevice *d = PCI_DEVICE(s);
2079 int i;
2080 for (i = 0; i < num_vectors; i++) {
2081 msix_vector_unuse(d, i);
2082 }
2083 }
2084
2085 static bool
2086 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2087 {
2088 PCIDevice *d = PCI_DEVICE(s);
2089 int i;
2090 for (i = 0; i < num_vectors; i++) {
2091 int res = msix_vector_use(d, i);
2092 if (0 > res) {
2093 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2094 vmxnet3_unuse_msix_vectors(s, i);
2095 return false;
2096 }
2097 }
2098 return true;
2099 }
2100
2101 static bool
2102 vmxnet3_init_msix(VMXNET3State *s)
2103 {
2104 PCIDevice *d = PCI_DEVICE(s);
2105 int res = msix_init(d, VMXNET3_MAX_INTRS,
2106 &s->msix_bar,
2107 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2108 &s->msix_bar,
2109 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2110 VMXNET3_MSIX_OFFSET(s), NULL);
2111
2112 if (0 > res) {
2113 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2114 s->msix_used = false;
2115 } else {
2116 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2117 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2118 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2119 s->msix_used = false;
2120 } else {
2121 s->msix_used = true;
2122 }
2123 }
2124 return s->msix_used;
2125 }
2126
2127 static void
2128 vmxnet3_cleanup_msix(VMXNET3State *s)
2129 {
2130 PCIDevice *d = PCI_DEVICE(s);
2131
2132 if (s->msix_used) {
2133 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2134 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2135 }
2136 }
2137
2138 static void
2139 vmxnet3_cleanup_msi(VMXNET3State *s)
2140 {
2141 PCIDevice *d = PCI_DEVICE(s);
2142
2143 msi_uninit(d);
2144 }
2145
2146 static const MemoryRegionOps b0_ops = {
2147 .read = vmxnet3_io_bar0_read,
2148 .write = vmxnet3_io_bar0_write,
2149 .endianness = DEVICE_LITTLE_ENDIAN,
2150 .impl = {
2151 .min_access_size = 4,
2152 .max_access_size = 4,
2153 },
2154 };
2155
2156 static const MemoryRegionOps b1_ops = {
2157 .read = vmxnet3_io_bar1_read,
2158 .write = vmxnet3_io_bar1_write,
2159 .endianness = DEVICE_LITTLE_ENDIAN,
2160 .impl = {
2161 .min_access_size = 4,
2162 .max_access_size = 4,
2163 },
2164 };
2165
2166 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2167 {
2168 uint64_t dsn_payload;
2169 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2170
2171 dsnp[0] = 0xfe;
2172 dsnp[1] = s->conf.macaddr.a[3];
2173 dsnp[2] = s->conf.macaddr.a[4];
2174 dsnp[3] = s->conf.macaddr.a[5];
2175 dsnp[4] = s->conf.macaddr.a[0];
2176 dsnp[5] = s->conf.macaddr.a[1];
2177 dsnp[6] = s->conf.macaddr.a[2];
2178 dsnp[7] = 0xff;
2179 return dsn_payload;
2180 }
2181
2182
2183 #define VMXNET3_USE_64BIT (true)
2184 #define VMXNET3_PER_VECTOR_MASK (false)
2185
2186 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2187 {
2188 VMXNET3State *s = VMXNET3(pci_dev);
2189 int ret;
2190
2191 VMW_CBPRN("Starting init...");
2192
2193 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2194 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2195 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2196 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2197
2198 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2199 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2200 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2201 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2202
2203 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2204 VMXNET3_MSIX_BAR_SIZE);
2205 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2206 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2207
2208 vmxnet3_reset_interrupt_states(s);
2209
2210 /* Interrupt pin A */
2211 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2212
2213 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2214 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2215 /* Any error other than -ENOTSUP(board's MSI support is broken)
2216 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2217 assert(!ret || ret == -ENOTSUP);
2218
2219 if (!vmxnet3_init_msix(s)) {
2220 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2221 }
2222
2223 vmxnet3_net_init(s);
2224
2225 if (pci_is_express(pci_dev)) {
2226 if (pci_bus_is_express(pci_get_bus(pci_dev))) {
2227 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2228 }
2229
2230 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2231 vmxnet3_device_serial_num(s));
2232 }
2233 }
2234
2235 static void vmxnet3_instance_init(Object *obj)
2236 {
2237 VMXNET3State *s = VMXNET3(obj);
2238 device_add_bootindex_property(obj, &s->conf.bootindex,
2239 "bootindex", "/ethernet-phy@0",
2240 DEVICE(obj), NULL);
2241 }
2242
2243 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2244 {
2245 DeviceState *dev = DEVICE(pci_dev);
2246 VMXNET3State *s = VMXNET3(pci_dev);
2247
2248 VMW_CBPRN("Starting uninit...");
2249
2250 unregister_savevm(dev, "vmxnet3-msix", s);
2251
2252 vmxnet3_net_uninit(s);
2253
2254 vmxnet3_cleanup_msix(s);
2255
2256 vmxnet3_cleanup_msi(s);
2257 }
2258
2259 static void vmxnet3_qdev_reset(DeviceState *dev)
2260 {
2261 PCIDevice *d = PCI_DEVICE(dev);
2262 VMXNET3State *s = VMXNET3(d);
2263
2264 VMW_CBPRN("Starting QDEV reset...");
2265 vmxnet3_reset(s);
2266 }
2267
2268 static bool vmxnet3_mc_list_needed(void *opaque)
2269 {
2270 return true;
2271 }
2272
2273 static int vmxnet3_mcast_list_pre_load(void *opaque)
2274 {
2275 VMXNET3State *s = opaque;
2276
2277 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2278
2279 return 0;
2280 }
2281
2282
2283 static int vmxnet3_pre_save(void *opaque)
2284 {
2285 VMXNET3State *s = opaque;
2286
2287 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2288
2289 return 0;
2290 }
2291
2292 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2293 .name = "vmxnet3/mcast_list",
2294 .version_id = 1,
2295 .minimum_version_id = 1,
2296 .pre_load = vmxnet3_mcast_list_pre_load,
2297 .needed = vmxnet3_mc_list_needed,
2298 .fields = (VMStateField[]) {
2299 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL,
2300 mcast_list_buff_size),
2301 VMSTATE_END_OF_LIST()
2302 }
2303 };
2304
2305 static const VMStateDescription vmstate_vmxnet3_ring = {
2306 .name = "vmxnet3-ring",
2307 .version_id = 0,
2308 .fields = (VMStateField[]) {
2309 VMSTATE_UINT64(pa, Vmxnet3Ring),
2310 VMSTATE_UINT32(size, Vmxnet3Ring),
2311 VMSTATE_UINT32(cell_size, Vmxnet3Ring),
2312 VMSTATE_UINT32(next, Vmxnet3Ring),
2313 VMSTATE_UINT8(gen, Vmxnet3Ring),
2314 VMSTATE_END_OF_LIST()
2315 }
2316 };
2317
2318 static const VMStateDescription vmstate_vmxnet3_tx_stats = {
2319 .name = "vmxnet3-tx-stats",
2320 .version_id = 0,
2321 .fields = (VMStateField[]) {
2322 VMSTATE_UINT64(TSOPktsTxOK, struct UPT1_TxStats),
2323 VMSTATE_UINT64(TSOBytesTxOK, struct UPT1_TxStats),
2324 VMSTATE_UINT64(ucastPktsTxOK, struct UPT1_TxStats),
2325 VMSTATE_UINT64(ucastBytesTxOK, struct UPT1_TxStats),
2326 VMSTATE_UINT64(mcastPktsTxOK, struct UPT1_TxStats),
2327 VMSTATE_UINT64(mcastBytesTxOK, struct UPT1_TxStats),
2328 VMSTATE_UINT64(bcastPktsTxOK, struct UPT1_TxStats),
2329 VMSTATE_UINT64(bcastBytesTxOK, struct UPT1_TxStats),
2330 VMSTATE_UINT64(pktsTxError, struct UPT1_TxStats),
2331 VMSTATE_UINT64(pktsTxDiscard, struct UPT1_TxStats),
2332 VMSTATE_END_OF_LIST()
2333 }
2334 };
2335
2336 static const VMStateDescription vmstate_vmxnet3_txq_descr = {
2337 .name = "vmxnet3-txq-descr",
2338 .version_id = 0,
2339 .fields = (VMStateField[]) {
2340 VMSTATE_STRUCT(tx_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2341 Vmxnet3Ring),
2342 VMSTATE_STRUCT(comp_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2343 Vmxnet3Ring),
2344 VMSTATE_UINT8(intr_idx, Vmxnet3TxqDescr),
2345 VMSTATE_UINT64(tx_stats_pa, Vmxnet3TxqDescr),
2346 VMSTATE_STRUCT(txq_stats, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_tx_stats,
2347 struct UPT1_TxStats),
2348 VMSTATE_END_OF_LIST()
2349 }
2350 };
2351
2352 static const VMStateDescription vmstate_vmxnet3_rx_stats = {
2353 .name = "vmxnet3-rx-stats",
2354 .version_id = 0,
2355 .fields = (VMStateField[]) {
2356 VMSTATE_UINT64(LROPktsRxOK, struct UPT1_RxStats),
2357 VMSTATE_UINT64(LROBytesRxOK, struct UPT1_RxStats),
2358 VMSTATE_UINT64(ucastPktsRxOK, struct UPT1_RxStats),
2359 VMSTATE_UINT64(ucastBytesRxOK, struct UPT1_RxStats),
2360 VMSTATE_UINT64(mcastPktsRxOK, struct UPT1_RxStats),
2361 VMSTATE_UINT64(mcastBytesRxOK, struct UPT1_RxStats),
2362 VMSTATE_UINT64(bcastPktsRxOK, struct UPT1_RxStats),
2363 VMSTATE_UINT64(bcastBytesRxOK, struct UPT1_RxStats),
2364 VMSTATE_UINT64(pktsRxOutOfBuf, struct UPT1_RxStats),
2365 VMSTATE_UINT64(pktsRxError, struct UPT1_RxStats),
2366 VMSTATE_END_OF_LIST()
2367 }
2368 };
2369
2370 static const VMStateDescription vmstate_vmxnet3_rxq_descr = {
2371 .name = "vmxnet3-rxq-descr",
2372 .version_id = 0,
2373 .fields = (VMStateField[]) {
2374 VMSTATE_STRUCT_ARRAY(rx_ring, Vmxnet3RxqDescr,
2375 VMXNET3_RX_RINGS_PER_QUEUE, 0,
2376 vmstate_vmxnet3_ring, Vmxnet3Ring),
2377 VMSTATE_STRUCT(comp_ring, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_ring,
2378 Vmxnet3Ring),
2379 VMSTATE_UINT8(intr_idx, Vmxnet3RxqDescr),
2380 VMSTATE_UINT64(rx_stats_pa, Vmxnet3RxqDescr),
2381 VMSTATE_STRUCT(rxq_stats, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_rx_stats,
2382 struct UPT1_RxStats),
2383 VMSTATE_END_OF_LIST()
2384 }
2385 };
2386
2387 static int vmxnet3_post_load(void *opaque, int version_id)
2388 {
2389 VMXNET3State *s = opaque;
2390 PCIDevice *d = PCI_DEVICE(s);
2391
2392 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2393 s->max_tx_frags, s->peer_has_vhdr);
2394 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2395
2396 if (s->msix_used) {
2397 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2398 VMW_WRPRN("Failed to re-use MSI-X vectors");
2399 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2400 s->msix_used = false;
2401 return -1;
2402 }
2403 }
2404
2405 vmxnet3_validate_queues(s);
2406 vmxnet3_validate_interrupts(s);
2407
2408 return 0;
2409 }
2410
2411 static const VMStateDescription vmstate_vmxnet3_int_state = {
2412 .name = "vmxnet3-int-state",
2413 .version_id = 0,
2414 .fields = (VMStateField[]) {
2415 VMSTATE_BOOL(is_masked, Vmxnet3IntState),
2416 VMSTATE_BOOL(is_pending, Vmxnet3IntState),
2417 VMSTATE_BOOL(is_asserted, Vmxnet3IntState),
2418 VMSTATE_END_OF_LIST()
2419 }
2420 };
2421
2422 static const VMStateDescription vmstate_vmxnet3 = {
2423 .name = "vmxnet3",
2424 .version_id = 1,
2425 .minimum_version_id = 1,
2426 .pre_save = vmxnet3_pre_save,
2427 .post_load = vmxnet3_post_load,
2428 .fields = (VMStateField[]) {
2429 VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
2430 VMSTATE_MSIX(parent_obj, VMXNET3State),
2431 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2432 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2433 VMSTATE_BOOL(lro_supported, VMXNET3State),
2434 VMSTATE_UINT32(rx_mode, VMXNET3State),
2435 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2436 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2437 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2438 VMSTATE_UINT32(mtu, VMXNET3State),
2439 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2440 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2441 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2442 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2443 VMSTATE_UINT8(txq_num, VMXNET3State),
2444 VMSTATE_UINT8(rxq_num, VMXNET3State),
2445 VMSTATE_UINT32(device_active, VMXNET3State),
2446 VMSTATE_UINT32(last_command, VMXNET3State),
2447 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2448 VMSTATE_UINT32(temp_mac, VMXNET3State),
2449 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2450 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2451
2452 VMSTATE_STRUCT_ARRAY(txq_descr, VMXNET3State,
2453 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, vmstate_vmxnet3_txq_descr,
2454 Vmxnet3TxqDescr),
2455 VMSTATE_STRUCT_ARRAY(rxq_descr, VMXNET3State,
2456 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, vmstate_vmxnet3_rxq_descr,
2457 Vmxnet3RxqDescr),
2458 VMSTATE_STRUCT_ARRAY(interrupt_states, VMXNET3State,
2459 VMXNET3_MAX_INTRS, 0, vmstate_vmxnet3_int_state,
2460 Vmxnet3IntState),
2461
2462 VMSTATE_END_OF_LIST()
2463 },
2464 .subsections = (const VMStateDescription*[]) {
2465 &vmxstate_vmxnet3_mcast_list,
2466 NULL
2467 }
2468 };
2469
2470 static Property vmxnet3_properties[] = {
2471 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2472 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2473 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2474 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2475 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2476 DEFINE_PROP_END_OF_LIST(),
2477 };
2478
2479 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2480 {
2481 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2482 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2483 VMXNET3State *s = VMXNET3(qdev);
2484
2485 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2486 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2487 }
2488
2489 vc->parent_dc_realize(qdev, errp);
2490 }
2491
2492 static void vmxnet3_class_init(ObjectClass *class, void *data)
2493 {
2494 DeviceClass *dc = DEVICE_CLASS(class);
2495 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2496 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2497
2498 c->realize = vmxnet3_pci_realize;
2499 c->exit = vmxnet3_pci_uninit;
2500 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2501 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2502 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2503 c->romfile = "efi-vmxnet3.rom";
2504 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2505 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2506 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2507 device_class_set_parent_realize(dc, vmxnet3_realize,
2508 &vc->parent_dc_realize);
2509 dc->desc = "VMWare Paravirtualized Ethernet v3";
2510 dc->reset = vmxnet3_qdev_reset;
2511 dc->vmsd = &vmstate_vmxnet3;
2512 dc->props = vmxnet3_properties;
2513 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2514 }
2515
2516 static const TypeInfo vmxnet3_info = {
2517 .name = TYPE_VMXNET3,
2518 .parent = TYPE_PCI_DEVICE,
2519 .class_size = sizeof(VMXNET3Class),
2520 .instance_size = sizeof(VMXNET3State),
2521 .class_init = vmxnet3_class_init,
2522 .instance_init = vmxnet3_instance_init,
2523 .interfaces = (InterfaceInfo[]) {
2524 { INTERFACE_PCIE_DEVICE },
2525 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
2526 { }
2527 },
2528 };
2529
2530 static void vmxnet3_register_types(void)
2531 {
2532 VMW_CBPRN("vmxnet3_register_types called...");
2533 type_register_static(&vmxnet3_info);
2534 }
2535
2536 type_init(vmxnet3_register_types)
AR7 emulation for QEMU