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Merge tag 'v9.0.0-rc3'
[qemu/ar7.git] / hw / net / vmxnet3.c
blob707487c636662cdf5b8009d6bbd674feaf4a7072
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
44 /* Compatibility flags for migration */
45 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
46 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
47 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
48 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
49 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
50 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
51
52 #define VMXNET3_EXP_EP_OFFSET (0x48)
53 #define VMXNET3_MSI_OFFSET(s) \
54 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
55 #define VMXNET3_MSIX_OFFSET(s) \
56 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
57 #define VMXNET3_DSN_OFFSET (0x100)
58
59 #define VMXNET3_BAR0_IDX (0)
60 #define VMXNET3_BAR1_IDX (1)
61 #define VMXNET3_MSIX_BAR_IDX (2)
62
63 #define VMXNET3_OFF_MSIX_TABLE (0x000)
64 #define VMXNET3_OFF_MSIX_PBA(s) \
65 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
66
67 /* Link speed in Mbps should be shifted by 16 */
68 #define VMXNET3_LINK_SPEED (1000 << 16)
69
70 /* Link status: 1 - up, 0 - down. */
71 #define VMXNET3_LINK_STATUS_UP 0x1
72
73 /* Least significant bit should be set for revision and version */
74 #define VMXNET3_UPT_REVISION 0x1
75 #define VMXNET3_DEVICE_REVISION 0x1
76
77 /* Number of interrupt vectors for non-MSIx modes */
78 #define VMXNET3_MAX_NMSIX_INTRS (1)
79
80 /* Macros for rings descriptors access */
81 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
82 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
83
84 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
85 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
86
87 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
88 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
89
90 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
91 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
92
93 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
94 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
95
96 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
97 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
98
99 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
100 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
101
102 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
103 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
104
105 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
106 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
107
108 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
109 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
110
111 /* Macros for guest driver shared area access */
112 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
113 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
114
115 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
116 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
117
118 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
119 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
120
121 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
122 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
123
124 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
125 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
126
127 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
128 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
129
130 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
131
132 struct VMXNET3Class {
133 PCIDeviceClass parent_class;
134 DeviceRealize parent_dc_realize;
135 };
136 typedef struct VMXNET3Class VMXNET3Class;
137
138 DECLARE_CLASS_CHECKERS(VMXNET3Class, VMXNET3_DEVICE,
139 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 return net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
443
444 case VMXNET3_OM_CSUM:
445 VMW_PKPRN("L4 CSO requested\n");
446 return net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
447
448 case VMXNET3_OM_TSO:
449 VMW_PKPRN("GSO offload requested.");
450 if (!net_tx_pkt_build_vheader(s->tx_pkt, true, true,
451 s->cso_or_gso_size)) {
452 return false;
453 }
454 net_tx_pkt_update_ip_checksums(s->tx_pkt);
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_pci(s->tx_pkt, PCI_DEVICE(s),
654 data_pa, data_len)) {
655 s->skip_current_tx_pkt = true;
656 }
657 }
658
659 if (s->tx_sop) {
660 vmxnet3_tx_retrieve_metadata(s, &txd);
661 s->tx_sop = false;
662 }
663
664 if (txd.eop) {
665 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
666 if (s->needs_vlan) {
667 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
668 }
669
670 vmxnet3_send_packet(s, qidx);
671 } else {
672 vmxnet3_on_tx_done_update_stats(s, qidx,
673 VMXNET3_PKT_STATUS_ERROR);
674 }
675
676 vmxnet3_complete_packet(s, qidx, txd_idx);
677 s->tx_sop = true;
678 s->skip_current_tx_pkt = false;
679 net_tx_pkt_reset(s->tx_pkt,
680 net_tx_pkt_unmap_frag_pci, PCI_DEVICE(s));
681 }
682 }
683
684 net_tx_pkt_reset(s->tx_pkt, net_tx_pkt_unmap_frag_pci, PCI_DEVICE(s));
685 }
686
687 static inline void
688 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
689 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
690 {
691 PCIDevice *d = PCI_DEVICE(s);
692
693 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
694 *didx = vmxnet3_ring_curr_cell_idx(ring);
695 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
696 dbuf->addr = le64_to_cpu(dbuf->addr);
697 dbuf->val1 = le32_to_cpu(dbuf->val1);
698 dbuf->ext1 = le32_to_cpu(dbuf->ext1);
699 }
700
701 static inline uint8_t
702 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
703 {
704 return s->rxq_descr[qidx].rx_ring[ridx].gen;
705 }
706
707 static inline hwaddr
708 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
709 {
710 uint8_t ring_gen;
711 struct Vmxnet3_RxCompDesc rxcd;
712
713 hwaddr daddr =
714 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
715
716 pci_dma_read(PCI_DEVICE(s),
717 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
718 rxcd.val1 = le32_to_cpu(rxcd.val1);
719 rxcd.val2 = le32_to_cpu(rxcd.val2);
720 rxcd.val3 = le32_to_cpu(rxcd.val3);
721 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
722
723 if (rxcd.gen != ring_gen) {
724 *descr_gen = ring_gen;
725 vmxnet3_inc_rx_completion_counter(s, qidx);
726 return daddr;
727 }
728
729 return 0;
730 }
731
732 static inline void
733 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
734 {
735 vmxnet3_dec_rx_completion_counter(s, qidx);
736 }
737
738 #define RXQ_IDX (0)
739 #define RX_HEAD_BODY_RING (0)
740 #define RX_BODY_ONLY_RING (1)
741
742 static bool
743 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
744 struct Vmxnet3_RxDesc *descr_buf,
745 uint32_t *descr_idx,
746 uint32_t *ridx)
747 {
748 for (;;) {
749 uint32_t ring_gen;
750 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
751 descr_buf, descr_idx);
752
753 /* If no more free descriptors - return */
754 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
755 if (descr_buf->gen != ring_gen) {
756 return false;
757 }
758
759 /* Only read after generation field verification */
760 smp_rmb();
761 /* Re-read to be sure we got the latest version */
762 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
763 descr_buf, descr_idx);
764
765 /* Mark current descriptor as used/skipped */
766 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
767
768 /* If this is what we are looking for - return */
769 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
770 *ridx = RX_HEAD_BODY_RING;
771 return true;
772 }
773 }
774 }
775
776 static bool
777 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
778 struct Vmxnet3_RxDesc *d,
779 uint32_t *didx,
780 uint32_t *ridx)
781 {
782 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
783
784 /* Try to find corresponding descriptor in head/body ring */
785 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
786 /* Only read after generation field verification */
787 smp_rmb();
788 /* Re-read to be sure we got the latest version */
789 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
790 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
791 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
792 *ridx = RX_HEAD_BODY_RING;
793 return true;
794 }
795 }
796
797 /*
798 * If there is no free descriptors on head/body ring or next free
799 * descriptor is a head descriptor switch to body only ring
800 */
801 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
802
803 /* If no more free descriptors - return */
804 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
805 /* Only read after generation field verification */
806 smp_rmb();
807 /* Re-read to be sure we got the latest version */
808 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
809 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
810 *ridx = RX_BODY_ONLY_RING;
811 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
812 return true;
813 }
814
815 return false;
816 }
817
818 static inline bool
819 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
820 struct Vmxnet3_RxDesc *descr_buf,
821 uint32_t *descr_idx,
822 uint32_t *ridx)
823 {
824 if (is_head || !s->rx_packets_compound) {
825 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
826 } else {
827 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
828 }
829 }
830
831 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
832 * the implementation always passes an RxCompDesc with a "Checksum
833 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
834 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
835 *
836 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
837 * and place a fully computed checksum into the tcp/udp header.
838 * Otherwise, the OS driver will receive a checksum-correct indication
839 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
840 * having just the pseudo header csum value.
841 *
842 * While this is not a problem if packet is destined for local delivery,
843 * in the case the host OS performs forwarding, it will forward an
844 * incorrectly checksummed packet.
845 */
846 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
847 const void *pkt_data,
848 size_t pkt_len)
849 {
850 struct virtio_net_hdr *vhdr;
851 bool hasip4, hasip6;
852 EthL4HdrProto l4hdr_proto;
853 uint8_t *data;
854 int len;
855
856 vhdr = net_rx_pkt_get_vhdr(pkt);
857 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
858 return;
859 }
860
861 net_rx_pkt_get_protocols(pkt, &hasip4, &hasip6, &l4hdr_proto);
862 if (!(hasip4 || hasip6) ||
863 (l4hdr_proto != ETH_L4_HDR_PROTO_TCP &&
864 l4hdr_proto != ETH_L4_HDR_PROTO_UDP)) {
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 hasip4, hasip6;
893 EthL4HdrProto l4hdr_proto;
894 struct virtio_net_hdr *vhdr;
895 uint8_t offload_type;
896
897 if (net_rx_pkt_is_vlan_stripped(pkt)) {
898 rxcd->ts = 1;
899 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
900 }
901
902 vhdr = net_rx_pkt_get_vhdr(pkt);
903 /*
904 * Checksum is valid when lower level tell so or when lower level
905 * requires checksum offload telling that packet produced/bridged
906 * locally and did travel over network after last checksum calculation
907 * or production
908 */
909 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
910 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
911
912 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
913 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
914
915 if (!csum_ok && !is_gso) {
916 goto nocsum;
917 }
918
919 net_rx_pkt_get_protocols(pkt, &hasip4, &hasip6, &l4hdr_proto);
920 if ((l4hdr_proto != ETH_L4_HDR_PROTO_TCP &&
921 l4hdr_proto != ETH_L4_HDR_PROTO_UDP) ||
922 (!hasip4 && !hasip6)) {
923 goto nocsum;
924 }
925
926 rxcd->cnc = 0;
927 rxcd->v4 = hasip4 ? 1 : 0;
928 rxcd->v6 = hasip6 ? 1 : 0;
929 rxcd->tcp = l4hdr_proto == ETH_L4_HDR_PROTO_TCP;
930 rxcd->udp = l4hdr_proto == ETH_L4_HDR_PROTO_UDP;
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 if (tx_queue_idx <= s->txq_num) {
1097 vmxnet3_process_tx_queue(s, tx_queue_idx);
1098 } else {
1099 qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Illegal TX queue %d/%d\n",
1100 tx_queue_idx, s->txq_num);
1101 }
1102 return;
1103 }
1104
1105 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1106 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1107 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1108 VMXNET3_REG_ALIGN);
1109
1110 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1111
1112 vmxnet3_on_interrupt_mask_changed(s, l, val);
1113 return;
1114 }
1115
1116 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1117 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1118 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1119 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1120 return;
1121 }
1122
1123 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1124 (uint64_t) addr, val, size);
1125 }
1126
1127 static uint64_t
1128 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1129 {
1130 VMXNET3State *s = opaque;
1131
1132 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1133 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1134 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1135 VMXNET3_REG_ALIGN);
1136 return s->interrupt_states[l].is_masked;
1137 }
1138
1139 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1140 return 0;
1141 }
1142
1143 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1144 {
1145 int i;
1146 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1147 s->interrupt_states[i].is_asserted = false;
1148 s->interrupt_states[i].is_pending = false;
1149 s->interrupt_states[i].is_masked = true;
1150 }
1151 }
1152
1153 static void vmxnet3_reset_mac(VMXNET3State *s)
1154 {
1155 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1156 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1157 }
1158
1159 static void vmxnet3_deactivate_device(VMXNET3State *s)
1160 {
1161 if (s->device_active) {
1162 VMW_CBPRN("Deactivating vmxnet3...");
1163 net_tx_pkt_uninit(s->tx_pkt);
1164 net_rx_pkt_uninit(s->rx_pkt);
1165 s->device_active = false;
1166 }
1167 }
1168
1169 static void vmxnet3_reset(VMXNET3State *s)
1170 {
1171 VMW_CBPRN("Resetting vmxnet3...");
1172
1173 vmxnet3_deactivate_device(s);
1174 vmxnet3_reset_interrupt_states(s);
1175 s->drv_shmem = 0;
1176 s->tx_sop = true;
1177 s->skip_current_tx_pkt = false;
1178 }
1179
1180 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1181 {
1182 PCIDevice *d = PCI_DEVICE(s);
1183
1184 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1185 devRead.rxFilterConf.rxMode);
1186 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1187 }
1188
1189 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1190 {
1191 int i;
1192 PCIDevice *d = PCI_DEVICE(s);
1193
1194 /* Copy configuration from shared memory */
1195 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1196 devRead.rxFilterConf.vfTable,
1197 s->vlan_table,
1198 sizeof(s->vlan_table));
1199
1200 /* Invert byte order when needed */
1201 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1202 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1203 }
1204
1205 /* Dump configuration for debugging purposes */
1206 VMW_CFPRN("Configured VLANs:");
1207 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1208 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1209 VMW_CFPRN("\tVLAN %d is present", i);
1210 }
1211 }
1212 }
1213
1214 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1215 {
1216 PCIDevice *d = PCI_DEVICE(s);
1217
1218 uint16_t list_bytes =
1219 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1220 devRead.rxFilterConf.mfTableLen);
1221
1222 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1223
1224 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1225 if (!s->mcast_list) {
1226 if (s->mcast_list_len == 0) {
1227 VMW_CFPRN("Current multicast list is empty");
1228 } else {
1229 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1230 s->mcast_list_len);
1231 }
1232 s->mcast_list_len = 0;
1233 } else {
1234 int i;
1235 hwaddr mcast_list_pa =
1236 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1237 devRead.rxFilterConf.mfTablePA);
1238
1239 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1240
1241 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1242 for (i = 0; i < s->mcast_list_len; i++) {
1243 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1244 }
1245 }
1246 }
1247
1248 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1249 {
1250 vmxnet3_update_rx_mode(s);
1251 vmxnet3_update_vlan_filters(s);
1252 vmxnet3_update_mcast_filters(s);
1253 }
1254
1255 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1256 {
1257 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1258 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1259 return interrupt_mode;
1260 }
1261
1262 static void vmxnet3_fill_stats(VMXNET3State *s)
1263 {
1264 int i;
1265 PCIDevice *d = PCI_DEVICE(s);
1266
1267 if (!s->device_active)
1268 return;
1269
1270 for (i = 0; i < s->txq_num; i++) {
1271 pci_dma_write(d,
1272 s->txq_descr[i].tx_stats_pa,
1273 &s->txq_descr[i].txq_stats,
1274 sizeof(s->txq_descr[i].txq_stats));
1275 }
1276
1277 for (i = 0; i < s->rxq_num; i++) {
1278 pci_dma_write(d,
1279 s->rxq_descr[i].rx_stats_pa,
1280 &s->rxq_descr[i].rxq_stats,
1281 sizeof(s->rxq_descr[i].rxq_stats));
1282 }
1283 }
1284
1285 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1286 {
1287 struct Vmxnet3_GOSInfo gos;
1288 PCIDevice *d = PCI_DEVICE(s);
1289
1290 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1291 &gos, sizeof(gos));
1292 s->rx_packets_compound =
1293 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1294
1295 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1296 }
1297
1298 static void
1299 vmxnet3_dump_conf_descr(const char *name,
1300 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1301 {
1302 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1303 name, pm_descr->confVer, pm_descr->confLen);
1304
1305 };
1306
1307 static void vmxnet3_update_pm_state(VMXNET3State *s)
1308 {
1309 struct Vmxnet3_VariableLenConfDesc pm_descr;
1310 PCIDevice *d = PCI_DEVICE(s);
1311
1312 pm_descr.confLen =
1313 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1314 pm_descr.confVer =
1315 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1316 pm_descr.confPA =
1317 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1318
1319 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1320 }
1321
1322 static void vmxnet3_update_features(VMXNET3State *s)
1323 {
1324 uint32_t guest_features;
1325 int rxcso_supported;
1326 PCIDevice *d = PCI_DEVICE(s);
1327
1328 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1329 devRead.misc.uptFeatures);
1330
1331 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1332 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1333 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1334
1335 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1336 s->lro_supported, rxcso_supported,
1337 s->rx_vlan_stripping);
1338 if (s->peer_has_vhdr) {
1339 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1340 rxcso_supported,
1341 s->lro_supported,
1342 s->lro_supported,
1343 0,
1344 0,
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 if (s->mtu < VMXNET3_MIN_MTU || s->mtu > VMXNET3_MAX_MTU) {
1445 qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Bad MTU size: %u\n", s->mtu);
1446 return;
1447 }
1448 VMW_CFPRN("MTU is %u", s->mtu);
1449
1450 s->max_rx_frags =
1451 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1452
1453 if (s->max_rx_frags == 0) {
1454 s->max_rx_frags = 1;
1455 }
1456
1457 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1458
1459 s->event_int_idx =
1460 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1461 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1462 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1463
1464 s->auto_int_masking =
1465 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1466 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1467
1468 qdescr_table_pa =
1469 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1470 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1471
1472 /*
1473 * Worst-case scenario is a packet that holds all TX rings space so
1474 * we calculate total size of all TX rings for max TX fragments number
1475 */
1476 s->max_tx_frags = 0;
1477
1478 /* TX queues */
1479 for (i = 0; i < s->txq_num; i++) {
1480 hwaddr qdescr_pa =
1481 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1482
1483 /* Read interrupt number for this TX queue */
1484 s->txq_descr[i].intr_idx =
1485 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1486 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1487
1488 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1489
1490 /* Read rings memory locations for TX queues */
1491 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1492 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1493 if (size > VMXNET3_TX_RING_MAX_SIZE) {
1494 size = VMXNET3_TX_RING_MAX_SIZE;
1495 }
1496
1497 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1498 sizeof(struct Vmxnet3_TxDesc), false);
1499 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1500
1501 s->max_tx_frags += size;
1502
1503 /* TXC ring */
1504 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1505 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1506 if (size > VMXNET3_TC_RING_MAX_SIZE) {
1507 size = VMXNET3_TC_RING_MAX_SIZE;
1508 }
1509 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1510 sizeof(struct Vmxnet3_TxCompDesc), true);
1511 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1512
1513 s->txq_descr[i].tx_stats_pa =
1514 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1515
1516 memset(&s->txq_descr[i].txq_stats, 0,
1517 sizeof(s->txq_descr[i].txq_stats));
1518
1519 /* Fill device-managed parameters for queues */
1520 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1521 ctrl.txThreshold,
1522 VMXNET3_DEF_TX_THRESHOLD);
1523 }
1524
1525 /* Preallocate TX packet wrapper */
1526 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1527 net_tx_pkt_init(&s->tx_pkt, s->max_tx_frags);
1528 net_rx_pkt_init(&s->rx_pkt);
1529
1530 /* Read rings memory locations for RX queues */
1531 for (i = 0; i < s->rxq_num; i++) {
1532 int j;
1533 hwaddr qd_pa =
1534 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1535 i * sizeof(struct Vmxnet3_RxQueueDesc);
1536
1537 /* Read interrupt number for this RX queue */
1538 s->rxq_descr[i].intr_idx =
1539 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1540 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1541
1542 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1543
1544 /* Read rings memory locations */
1545 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1546 /* RX rings */
1547 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1548 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1549 if (size > VMXNET3_RX_RING_MAX_SIZE) {
1550 size = VMXNET3_RX_RING_MAX_SIZE;
1551 }
1552 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1553 sizeof(struct Vmxnet3_RxDesc), false);
1554 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1555 i, j, pa, size);
1556 }
1557
1558 /* RXC ring */
1559 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1560 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1561 if (size > VMXNET3_RC_RING_MAX_SIZE) {
1562 size = VMXNET3_RC_RING_MAX_SIZE;
1563 }
1564 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1565 sizeof(struct Vmxnet3_RxCompDesc), true);
1566 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1567
1568 s->rxq_descr[i].rx_stats_pa =
1569 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1570 memset(&s->rxq_descr[i].rxq_stats, 0,
1571 sizeof(s->rxq_descr[i].rxq_stats));
1572 }
1573
1574 vmxnet3_validate_interrupts(s);
1575
1576 /* Make sure everything is in place before device activation */
1577 smp_wmb();
1578
1579 vmxnet3_reset_mac(s);
1580
1581 s->device_active = true;
1582 }
1583
1584 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1585 {
1586 s->last_command = cmd;
1587
1588 switch (cmd) {
1589 case VMXNET3_CMD_GET_PERM_MAC_HI:
1590 VMW_CBPRN("Set: Get upper part of permanent MAC");
1591 break;
1592
1593 case VMXNET3_CMD_GET_PERM_MAC_LO:
1594 VMW_CBPRN("Set: Get lower part of permanent MAC");
1595 break;
1596
1597 case VMXNET3_CMD_GET_STATS:
1598 VMW_CBPRN("Set: Get device statistics");
1599 vmxnet3_fill_stats(s);
1600 break;
1601
1602 case VMXNET3_CMD_ACTIVATE_DEV:
1603 VMW_CBPRN("Set: Activating vmxnet3 device");
1604 vmxnet3_activate_device(s);
1605 break;
1606
1607 case VMXNET3_CMD_UPDATE_RX_MODE:
1608 VMW_CBPRN("Set: Update rx mode");
1609 vmxnet3_update_rx_mode(s);
1610 break;
1611
1612 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1613 VMW_CBPRN("Set: Update VLAN filters");
1614 vmxnet3_update_vlan_filters(s);
1615 break;
1616
1617 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1618 VMW_CBPRN("Set: Update MAC filters");
1619 vmxnet3_update_mcast_filters(s);
1620 break;
1621
1622 case VMXNET3_CMD_UPDATE_FEATURE:
1623 VMW_CBPRN("Set: Update features");
1624 vmxnet3_update_features(s);
1625 break;
1626
1627 case VMXNET3_CMD_UPDATE_PMCFG:
1628 VMW_CBPRN("Set: Update power management config");
1629 vmxnet3_update_pm_state(s);
1630 break;
1631
1632 case VMXNET3_CMD_GET_LINK:
1633 VMW_CBPRN("Set: Get link");
1634 break;
1635
1636 case VMXNET3_CMD_RESET_DEV:
1637 VMW_CBPRN("Set: Reset device");
1638 vmxnet3_reset(s);
1639 break;
1640
1641 case VMXNET3_CMD_QUIESCE_DEV:
1642 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1643 vmxnet3_deactivate_device(s);
1644 break;
1645
1646 case VMXNET3_CMD_GET_CONF_INTR:
1647 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1648 break;
1649
1650 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1651 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1652 "adaptive ring info flags");
1653 break;
1654
1655 case VMXNET3_CMD_GET_DID_LO:
1656 VMW_CBPRN("Set: Get lower part of device ID");
1657 break;
1658
1659 case VMXNET3_CMD_GET_DID_HI:
1660 VMW_CBPRN("Set: Get upper part of device ID");
1661 break;
1662
1663 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1664 VMW_CBPRN("Set: Get device extra info");
1665 break;
1666
1667 default:
1668 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1669 break;
1670 }
1671 }
1672
1673 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1674 {
1675 uint64_t ret;
1676
1677 switch (s->last_command) {
1678 case VMXNET3_CMD_ACTIVATE_DEV:
1679 ret = (s->device_active) ? 0 : 1;
1680 VMW_CFPRN("Device active: %" PRIx64, ret);
1681 break;
1682
1683 case VMXNET3_CMD_RESET_DEV:
1684 case VMXNET3_CMD_QUIESCE_DEV:
1685 case VMXNET3_CMD_GET_QUEUE_STATUS:
1686 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1687 ret = 0;
1688 break;
1689
1690 case VMXNET3_CMD_GET_LINK:
1691 ret = s->link_status_and_speed;
1692 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1693 break;
1694
1695 case VMXNET3_CMD_GET_PERM_MAC_LO:
1696 ret = vmxnet3_get_mac_low(&s->perm_mac);
1697 break;
1698
1699 case VMXNET3_CMD_GET_PERM_MAC_HI:
1700 ret = vmxnet3_get_mac_high(&s->perm_mac);
1701 break;
1702
1703 case VMXNET3_CMD_GET_CONF_INTR:
1704 ret = vmxnet3_get_interrupt_config(s);
1705 break;
1706
1707 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1708 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1709 break;
1710
1711 case VMXNET3_CMD_GET_DID_LO:
1712 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1713 break;
1714
1715 case VMXNET3_CMD_GET_DID_HI:
1716 ret = VMXNET3_DEVICE_REVISION;
1717 break;
1718
1719 default:
1720 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1721 ret = 0;
1722 break;
1723 }
1724
1725 return ret;
1726 }
1727
1728 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1729 {
1730 uint32_t events;
1731 PCIDevice *d = PCI_DEVICE(s);
1732
1733 VMW_CBPRN("Setting events: 0x%x", val);
1734 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1735 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1736 }
1737
1738 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1739 {
1740 PCIDevice *d = PCI_DEVICE(s);
1741 uint32_t events;
1742
1743 VMW_CBPRN("Clearing events: 0x%x", val);
1744 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1745 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1746 }
1747
1748 static void
1749 vmxnet3_io_bar1_write(void *opaque,
1750 hwaddr addr,
1751 uint64_t val,
1752 unsigned size)
1753 {
1754 VMXNET3State *s = opaque;
1755
1756 switch (addr) {
1757 /* Vmxnet3 Revision Report Selection */
1758 case VMXNET3_REG_VRRS:
1759 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1760 val, size);
1761 break;
1762
1763 /* UPT Version Report Selection */
1764 case VMXNET3_REG_UVRS:
1765 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1766 val, size);
1767 break;
1768
1769 /* Driver Shared Address Low */
1770 case VMXNET3_REG_DSAL:
1771 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1772 val, size);
1773 /*
1774 * Guest driver will first write the low part of the shared
1775 * memory address. We save it to temp variable and set the
1776 * shared address only after we get the high part
1777 */
1778 if (val == 0) {
1779 vmxnet3_deactivate_device(s);
1780 }
1781 s->temp_shared_guest_driver_memory = val;
1782 s->drv_shmem = 0;
1783 break;
1784
1785 /* Driver Shared Address High */
1786 case VMXNET3_REG_DSAH:
1787 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1788 val, size);
1789 /*
1790 * Set the shared memory between guest driver and device.
1791 * We already should have low address part.
1792 */
1793 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1794 break;
1795
1796 /* Command */
1797 case VMXNET3_REG_CMD:
1798 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1799 val, size);
1800 vmxnet3_handle_command(s, val);
1801 break;
1802
1803 /* MAC Address Low */
1804 case VMXNET3_REG_MACL:
1805 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1806 val, size);
1807 s->temp_mac = val;
1808 break;
1809
1810 /* MAC Address High */
1811 case VMXNET3_REG_MACH:
1812 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1813 val, size);
1814 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1815 break;
1816
1817 /* Interrupt Cause Register */
1818 case VMXNET3_REG_ICR:
1819 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1820 val, size);
1821 qemu_log_mask(LOG_GUEST_ERROR,
1822 "%s: write to read-only register VMXNET3_REG_ICR\n",
1823 TYPE_VMXNET3);
1824 break;
1825
1826 /* Event Cause Register */
1827 case VMXNET3_REG_ECR:
1828 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1829 val, size);
1830 vmxnet3_ack_events(s, val);
1831 break;
1832
1833 default:
1834 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1835 addr, val, size);
1836 break;
1837 }
1838 }
1839
1840 static uint64_t
1841 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1842 {
1843 VMXNET3State *s = opaque;
1844 uint64_t ret = 0;
1845
1846 switch (addr) {
1847 /* Vmxnet3 Revision Report Selection */
1848 case VMXNET3_REG_VRRS:
1849 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1850 ret = VMXNET3_DEVICE_REVISION;
1851 break;
1852
1853 /* UPT Version Report Selection */
1854 case VMXNET3_REG_UVRS:
1855 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1856 ret = VMXNET3_UPT_REVISION;
1857 break;
1858
1859 /* Command */
1860 case VMXNET3_REG_CMD:
1861 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1862 ret = vmxnet3_get_command_status(s);
1863 break;
1864
1865 /* MAC Address Low */
1866 case VMXNET3_REG_MACL:
1867 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1868 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1869 break;
1870
1871 /* MAC Address High */
1872 case VMXNET3_REG_MACH:
1873 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1874 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1875 break;
1876
1877 /*
1878 * Interrupt Cause Register
1879 * Used for legacy interrupts only so interrupt index always 0
1880 */
1881 case VMXNET3_REG_ICR:
1882 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1883 if (vmxnet3_interrupt_asserted(s, 0)) {
1884 vmxnet3_clear_interrupt(s, 0);
1885 ret = true;
1886 } else {
1887 ret = false;
1888 }
1889 break;
1890
1891 default:
1892 VMW_CBPRN("Unknown read BAR1[%" PRIx64 "], %d bytes", addr, size);
1893 break;
1894 }
1895
1896 return ret;
1897 }
1898
1899 static int
1900 vmxnet3_can_receive(NetClientState *nc)
1901 {
1902 VMXNET3State *s = qemu_get_nic_opaque(nc);
1903 return s->device_active &&
1904 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1905 }
1906
1907 static inline bool
1908 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1909 {
1910 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1911 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1912 return true;
1913 }
1914
1915 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1916 }
1917
1918 static bool
1919 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1920 {
1921 int i;
1922 for (i = 0; i < s->mcast_list_len; i++) {
1923 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1924 return true;
1925 }
1926 }
1927 return false;
1928 }
1929
1930 static bool
1931 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1932 size_t size)
1933 {
1934 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1935
1936 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1937 return true;
1938 }
1939
1940 if (!vmxnet3_is_registered_vlan(s, data)) {
1941 return false;
1942 }
1943
1944 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1945 case ETH_PKT_UCAST:
1946 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1947 return false;
1948 }
1949 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1950 return false;
1951 }
1952 break;
1953
1954 case ETH_PKT_BCAST:
1955 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
1956 return false;
1957 }
1958 break;
1959
1960 case ETH_PKT_MCAST:
1961 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
1962 return true;
1963 }
1964 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
1965 return false;
1966 }
1967 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
1968 return false;
1969 }
1970 break;
1971
1972 default:
1973 g_assert_not_reached();
1974 }
1975
1976 return true;
1977 }
1978
1979 static ssize_t
1980 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
1981 {
1982 VMXNET3State *s = qemu_get_nic_opaque(nc);
1983 size_t bytes_indicated;
1984
1985 if (!vmxnet3_can_receive(nc)) {
1986 VMW_PKPRN("Cannot receive now");
1987 return -1;
1988 }
1989
1990 if (s->peer_has_vhdr) {
1991 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
1992 buf += sizeof(struct virtio_net_hdr);
1993 size -= sizeof(struct virtio_net_hdr);
1994 }
1995
1996 net_rx_pkt_set_packet_type(s->rx_pkt,
1997 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
1998
1999 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2000 struct iovec iov = {
2001 .iov_base = (void *)buf,
2002 .iov_len = size
2003 };
2004
2005 net_rx_pkt_set_protocols(s->rx_pkt, &iov, 1, 0);
2006 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2007 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2008 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2009 if (bytes_indicated < size) {
2010 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2011 }
2012 } else {
2013 VMW_PKPRN("Packet dropped by RX filter");
2014 bytes_indicated = size;
2015 }
2016
2017 assert(size > 0);
2018 assert(bytes_indicated != 0);
2019 return bytes_indicated;
2020 }
2021
2022 static void vmxnet3_set_link_status(NetClientState *nc)
2023 {
2024 VMXNET3State *s = qemu_get_nic_opaque(nc);
2025
2026 if (nc->link_down) {
2027 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2028 } else {
2029 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2030 }
2031
2032 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2033 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2034 }
2035
2036 static NetClientInfo net_vmxnet3_info = {
2037 .type = NET_CLIENT_DRIVER_NIC,
2038 .size = sizeof(NICState),
2039 .receive = vmxnet3_receive,
2040 .link_status_changed = vmxnet3_set_link_status,
2041 };
2042
2043 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2044 {
2045 NetClientState *nc = qemu_get_queue(s->nic);
2046
2047 if (qemu_has_vnet_hdr(nc->peer)) {
2048 return true;
2049 }
2050
2051 return false;
2052 }
2053
2054 static void vmxnet3_net_uninit(VMXNET3State *s)
2055 {
2056 g_free(s->mcast_list);
2057 vmxnet3_deactivate_device(s);
2058 qemu_del_nic(s->nic);
2059 }
2060
2061 static void vmxnet3_net_init(VMXNET3State *s)
2062 {
2063 DeviceState *d = DEVICE(s);
2064
2065 VMW_CBPRN("vmxnet3_net_init called...");
2066
2067 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2068
2069 /* Windows guest will query the address that was set on init */
2070 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2071
2072 s->mcast_list = NULL;
2073 s->mcast_list_len = 0;
2074
2075 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2076
2077 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2078
2079 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2080 object_get_typename(OBJECT(s)),
2081 d->id, &d->mem_reentrancy_guard, s);
2082
2083 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2084 s->tx_sop = true;
2085 s->skip_current_tx_pkt = false;
2086 s->tx_pkt = NULL;
2087 s->rx_pkt = NULL;
2088 s->rx_vlan_stripping = false;
2089 s->lro_supported = false;
2090
2091 if (s->peer_has_vhdr) {
2092 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2093 sizeof(struct virtio_net_hdr));
2094
2095 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2096 }
2097
2098 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2099 }
2100
2101 static void
2102 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2103 {
2104 PCIDevice *d = PCI_DEVICE(s);
2105 int i;
2106 for (i = 0; i < num_vectors; i++) {
2107 msix_vector_unuse(d, i);
2108 }
2109 }
2110
2111 static void
2112 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2113 {
2114 PCIDevice *d = PCI_DEVICE(s);
2115 int i;
2116 for (i = 0; i < num_vectors; i++) {
2117 msix_vector_use(d, i);
2118 }
2119 }
2120
2121 static bool
2122 vmxnet3_init_msix(VMXNET3State *s)
2123 {
2124 PCIDevice *d = PCI_DEVICE(s);
2125 int res = msix_init(d, VMXNET3_MAX_INTRS,
2126 &s->msix_bar,
2127 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2128 &s->msix_bar,
2129 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2130 VMXNET3_MSIX_OFFSET(s), NULL);
2131
2132 if (0 > res) {
2133 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2134 s->msix_used = false;
2135 } else {
2136 vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS);
2137 s->msix_used = true;
2138 }
2139 return s->msix_used;
2140 }
2141
2142 static void
2143 vmxnet3_cleanup_msix(VMXNET3State *s)
2144 {
2145 PCIDevice *d = PCI_DEVICE(s);
2146
2147 if (s->msix_used) {
2148 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2149 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2150 }
2151 }
2152
2153 static void
2154 vmxnet3_cleanup_msi(VMXNET3State *s)
2155 {
2156 PCIDevice *d = PCI_DEVICE(s);
2157
2158 msi_uninit(d);
2159 }
2160
2161 static const MemoryRegionOps b0_ops = {
2162 .read = vmxnet3_io_bar0_read,
2163 .write = vmxnet3_io_bar0_write,
2164 .endianness = DEVICE_LITTLE_ENDIAN,
2165 .impl = {
2166 .min_access_size = 4,
2167 .max_access_size = 4,
2168 },
2169 };
2170
2171 static const MemoryRegionOps b1_ops = {
2172 .read = vmxnet3_io_bar1_read,
2173 .write = vmxnet3_io_bar1_write,
2174 .endianness = DEVICE_LITTLE_ENDIAN,
2175 .impl = {
2176 .min_access_size = 4,
2177 .max_access_size = 4,
2178 },
2179 };
2180
2181 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2182 {
2183 uint64_t dsn_payload;
2184 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2185
2186 dsnp[0] = 0xfe;
2187 dsnp[1] = s->conf.macaddr.a[3];
2188 dsnp[2] = s->conf.macaddr.a[4];
2189 dsnp[3] = s->conf.macaddr.a[5];
2190 dsnp[4] = s->conf.macaddr.a[0];
2191 dsnp[5] = s->conf.macaddr.a[1];
2192 dsnp[6] = s->conf.macaddr.a[2];
2193 dsnp[7] = 0xff;
2194 return dsn_payload;
2195 }
2196
2197
2198 #define VMXNET3_USE_64BIT (true)
2199 #define VMXNET3_PER_VECTOR_MASK (false)
2200
2201 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2202 {
2203 VMXNET3State *s = VMXNET3(pci_dev);
2204 int ret;
2205
2206 VMW_CBPRN("Starting init...");
2207
2208 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2209 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2210 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2211 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2212
2213 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2214 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2215 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2216 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2217
2218 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2219 VMXNET3_MSIX_BAR_SIZE);
2220 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2221 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2222
2223 vmxnet3_reset_interrupt_states(s);
2224
2225 /* Interrupt pin A */
2226 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2227
2228 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2229 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2230 /* Any error other than -ENOTSUP(board's MSI support is broken)
2231 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2232 assert(!ret || ret == -ENOTSUP);
2233
2234 if (!vmxnet3_init_msix(s)) {
2235 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2236 }
2237
2238 vmxnet3_net_init(s);
2239
2240 if (pci_is_express(pci_dev)) {
2241 if (pci_bus_is_express(pci_get_bus(pci_dev))) {
2242 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2243 }
2244
2245 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2246 vmxnet3_device_serial_num(s));
2247 }
2248 }
2249
2250 static void vmxnet3_instance_init(Object *obj)
2251 {
2252 VMXNET3State *s = VMXNET3(obj);
2253 device_add_bootindex_property(obj, &s->conf.bootindex,
2254 "bootindex", "/ethernet-phy@0",
2255 DEVICE(obj));
2256 }
2257
2258 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2259 {
2260 VMXNET3State *s = VMXNET3(pci_dev);
2261
2262 VMW_CBPRN("Starting uninit...");
2263
2264 vmxnet3_net_uninit(s);
2265
2266 vmxnet3_cleanup_msix(s);
2267
2268 vmxnet3_cleanup_msi(s);
2269 }
2270
2271 static void vmxnet3_qdev_reset(DeviceState *dev)
2272 {
2273 PCIDevice *d = PCI_DEVICE(dev);
2274 VMXNET3State *s = VMXNET3(d);
2275
2276 VMW_CBPRN("Starting QDEV reset...");
2277 vmxnet3_reset(s);
2278 }
2279
2280 static bool vmxnet3_mc_list_needed(void *opaque)
2281 {
2282 return true;
2283 }
2284
2285 static int vmxnet3_mcast_list_pre_load(void *opaque)
2286 {
2287 VMXNET3State *s = opaque;
2288
2289 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2290
2291 return 0;
2292 }
2293
2294
2295 static int vmxnet3_pre_save(void *opaque)
2296 {
2297 VMXNET3State *s = opaque;
2298
2299 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2300
2301 return 0;
2302 }
2303
2304 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2305 .name = "vmxnet3/mcast_list",
2306 .version_id = 1,
2307 .minimum_version_id = 1,
2308 .pre_load = vmxnet3_mcast_list_pre_load,
2309 .needed = vmxnet3_mc_list_needed,
2310 .fields = (const VMStateField[]) {
2311 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL,
2312 mcast_list_buff_size),
2313 VMSTATE_END_OF_LIST()
2314 }
2315 };
2316
2317 static const VMStateDescription vmstate_vmxnet3_ring = {
2318 .name = "vmxnet3-ring",
2319 .version_id = 0,
2320 .fields = (const VMStateField[]) {
2321 VMSTATE_UINT64(pa, Vmxnet3Ring),
2322 VMSTATE_UINT32(size, Vmxnet3Ring),
2323 VMSTATE_UINT32(cell_size, Vmxnet3Ring),
2324 VMSTATE_UINT32(next, Vmxnet3Ring),
2325 VMSTATE_UINT8(gen, Vmxnet3Ring),
2326 VMSTATE_END_OF_LIST()
2327 }
2328 };
2329
2330 static const VMStateDescription vmstate_vmxnet3_tx_stats = {
2331 .name = "vmxnet3-tx-stats",
2332 .version_id = 0,
2333 .fields = (const VMStateField[]) {
2334 VMSTATE_UINT64(TSOPktsTxOK, struct UPT1_TxStats),
2335 VMSTATE_UINT64(TSOBytesTxOK, struct UPT1_TxStats),
2336 VMSTATE_UINT64(ucastPktsTxOK, struct UPT1_TxStats),
2337 VMSTATE_UINT64(ucastBytesTxOK, struct UPT1_TxStats),
2338 VMSTATE_UINT64(mcastPktsTxOK, struct UPT1_TxStats),
2339 VMSTATE_UINT64(mcastBytesTxOK, struct UPT1_TxStats),
2340 VMSTATE_UINT64(bcastPktsTxOK, struct UPT1_TxStats),
2341 VMSTATE_UINT64(bcastBytesTxOK, struct UPT1_TxStats),
2342 VMSTATE_UINT64(pktsTxError, struct UPT1_TxStats),
2343 VMSTATE_UINT64(pktsTxDiscard, struct UPT1_TxStats),
2344 VMSTATE_END_OF_LIST()
2345 }
2346 };
2347
2348 static const VMStateDescription vmstate_vmxnet3_txq_descr = {
2349 .name = "vmxnet3-txq-descr",
2350 .version_id = 0,
2351 .fields = (const VMStateField[]) {
2352 VMSTATE_STRUCT(tx_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2353 Vmxnet3Ring),
2354 VMSTATE_STRUCT(comp_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2355 Vmxnet3Ring),
2356 VMSTATE_UINT8(intr_idx, Vmxnet3TxqDescr),
2357 VMSTATE_UINT64(tx_stats_pa, Vmxnet3TxqDescr),
2358 VMSTATE_STRUCT(txq_stats, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_tx_stats,
2359 struct UPT1_TxStats),
2360 VMSTATE_END_OF_LIST()
2361 }
2362 };
2363
2364 static const VMStateDescription vmstate_vmxnet3_rx_stats = {
2365 .name = "vmxnet3-rx-stats",
2366 .version_id = 0,
2367 .fields = (const VMStateField[]) {
2368 VMSTATE_UINT64(LROPktsRxOK, struct UPT1_RxStats),
2369 VMSTATE_UINT64(LROBytesRxOK, struct UPT1_RxStats),
2370 VMSTATE_UINT64(ucastPktsRxOK, struct UPT1_RxStats),
2371 VMSTATE_UINT64(ucastBytesRxOK, struct UPT1_RxStats),
2372 VMSTATE_UINT64(mcastPktsRxOK, struct UPT1_RxStats),
2373 VMSTATE_UINT64(mcastBytesRxOK, struct UPT1_RxStats),
2374 VMSTATE_UINT64(bcastPktsRxOK, struct UPT1_RxStats),
2375 VMSTATE_UINT64(bcastBytesRxOK, struct UPT1_RxStats),
2376 VMSTATE_UINT64(pktsRxOutOfBuf, struct UPT1_RxStats),
2377 VMSTATE_UINT64(pktsRxError, struct UPT1_RxStats),
2378 VMSTATE_END_OF_LIST()
2379 }
2380 };
2381
2382 static const VMStateDescription vmstate_vmxnet3_rxq_descr = {
2383 .name = "vmxnet3-rxq-descr",
2384 .version_id = 0,
2385 .fields = (const VMStateField[]) {
2386 VMSTATE_STRUCT_ARRAY(rx_ring, Vmxnet3RxqDescr,
2387 VMXNET3_RX_RINGS_PER_QUEUE, 0,
2388 vmstate_vmxnet3_ring, Vmxnet3Ring),
2389 VMSTATE_STRUCT(comp_ring, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_ring,
2390 Vmxnet3Ring),
2391 VMSTATE_UINT8(intr_idx, Vmxnet3RxqDescr),
2392 VMSTATE_UINT64(rx_stats_pa, Vmxnet3RxqDescr),
2393 VMSTATE_STRUCT(rxq_stats, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_rx_stats,
2394 struct UPT1_RxStats),
2395 VMSTATE_END_OF_LIST()
2396 }
2397 };
2398
2399 static int vmxnet3_post_load(void *opaque, int version_id)
2400 {
2401 VMXNET3State *s = opaque;
2402
2403 net_tx_pkt_init(&s->tx_pkt, s->max_tx_frags);
2404 net_rx_pkt_init(&s->rx_pkt);
2405
2406 if (s->msix_used) {
2407 vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS);
2408 }
2409
2410 if (!vmxnet3_validate_queues(s)) {
2411 return -1;
2412 }
2413 vmxnet3_validate_interrupts(s);
2414
2415 return 0;
2416 }
2417
2418 static const VMStateDescription vmstate_vmxnet3_int_state = {
2419 .name = "vmxnet3-int-state",
2420 .version_id = 0,
2421 .fields = (const VMStateField[]) {
2422 VMSTATE_BOOL(is_masked, Vmxnet3IntState),
2423 VMSTATE_BOOL(is_pending, Vmxnet3IntState),
2424 VMSTATE_BOOL(is_asserted, Vmxnet3IntState),
2425 VMSTATE_END_OF_LIST()
2426 }
2427 };
2428
2429 static const VMStateDescription vmstate_vmxnet3 = {
2430 .name = "vmxnet3",
2431 .version_id = 1,
2432 .minimum_version_id = 1,
2433 .pre_save = vmxnet3_pre_save,
2434 .post_load = vmxnet3_post_load,
2435 .fields = (const VMStateField[]) {
2436 VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
2437 VMSTATE_MSIX(parent_obj, VMXNET3State),
2438 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2439 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2440 VMSTATE_BOOL(lro_supported, VMXNET3State),
2441 VMSTATE_UINT32(rx_mode, VMXNET3State),
2442 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2443 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2444 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2445 VMSTATE_UINT32(mtu, VMXNET3State),
2446 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2447 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2448 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2449 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2450 VMSTATE_UINT8(txq_num, VMXNET3State),
2451 VMSTATE_UINT8(rxq_num, VMXNET3State),
2452 VMSTATE_UINT32(device_active, VMXNET3State),
2453 VMSTATE_UINT32(last_command, VMXNET3State),
2454 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2455 VMSTATE_UINT32(temp_mac, VMXNET3State),
2456 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2457 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2458
2459 VMSTATE_STRUCT_ARRAY(txq_descr, VMXNET3State,
2460 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, vmstate_vmxnet3_txq_descr,
2461 Vmxnet3TxqDescr),
2462 VMSTATE_STRUCT_ARRAY(rxq_descr, VMXNET3State,
2463 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, vmstate_vmxnet3_rxq_descr,
2464 Vmxnet3RxqDescr),
2465 VMSTATE_STRUCT_ARRAY(interrupt_states, VMXNET3State,
2466 VMXNET3_MAX_INTRS, 0, vmstate_vmxnet3_int_state,
2467 Vmxnet3IntState),
2468
2469 VMSTATE_END_OF_LIST()
2470 },
2471 .subsections = (const VMStateDescription * const []) {
2472 &vmxstate_vmxnet3_mcast_list,
2473 NULL
2474 }
2475 };
2476
2477 static Property vmxnet3_properties[] = {
2478 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2479 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2480 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2481 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2482 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2483 DEFINE_PROP_END_OF_LIST(),
2484 };
2485
2486 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2487 {
2488 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2489 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2490 VMXNET3State *s = VMXNET3(qdev);
2491
2492 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2493 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2494 }
2495
2496 vc->parent_dc_realize(qdev, errp);
2497 }
2498
2499 static void vmxnet3_class_init(ObjectClass *class, void *data)
2500 {
2501 DeviceClass *dc = DEVICE_CLASS(class);
2502 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2503 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2504
2505 c->realize = vmxnet3_pci_realize;
2506 c->exit = vmxnet3_pci_uninit;
2507 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2508 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2509 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2510 c->romfile = "efi-vmxnet3.rom";
2511 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2512 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2513 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2514 device_class_set_parent_realize(dc, vmxnet3_realize,
2515 &vc->parent_dc_realize);
2516 dc->desc = "VMWare Paravirtualized Ethernet v3";
2517 dc->reset = vmxnet3_qdev_reset;
2518 dc->vmsd = &vmstate_vmxnet3;
2519 device_class_set_props(dc, vmxnet3_properties);
2520 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2521 }
2522
2523 static const TypeInfo vmxnet3_info = {
2524 .name = TYPE_VMXNET3,
2525 .parent = TYPE_PCI_DEVICE,
2526 .class_size = sizeof(VMXNET3Class),
2527 .instance_size = sizeof(VMXNET3State),
2528 .class_init = vmxnet3_class_init,
2529 .instance_init = vmxnet3_instance_init,
2530 .interfaces = (InterfaceInfo[]) {
2531 { INTERFACE_PCIE_DEVICE },
2532 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
2533 { }
2534 },
2535 };
2536
2537 static void vmxnet3_register_types(void)
2538 {
2539 VMW_CBPRN("vmxnet3_register_types called...");
2540 type_register_static(&vmxnet3_info);
2541 }
2542
2543 type_init(vmxnet3_register_types)
AR7 emulation for QEMU