vmxnet3: validate queues configuration read on migration
[qemu.git] / hw / net / vmxnet3.c
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 "hw/hw.h"
19 #include "hw/pci/pci.h"
20 #include "net/net.h"
21 #include "net/tap.h"
22 #include "net/checksum.h"
23 #include "sysemu/sysemu.h"
24 #include "qemu-common.h"
25 #include "qemu/bswap.h"
26 #include "hw/pci/msix.h"
27 #include "hw/pci/msi.h"
28
29 #include "vmxnet3.h"
30 #include "vmxnet_debug.h"
31 #include "vmware_utils.h"
32 #include "vmxnet_tx_pkt.h"
33 #include "vmxnet_rx_pkt.h"
34
35 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
36 #define VMXNET3_MSIX_BAR_SIZE 0x2000
37
38 #define VMXNET3_BAR0_IDX (0)
39 #define VMXNET3_BAR1_IDX (1)
40 #define VMXNET3_MSIX_BAR_IDX (2)
41
42 #define VMXNET3_OFF_MSIX_TABLE (0x000)
43 #define VMXNET3_OFF_MSIX_PBA (0x800)
44
45 /* Link speed in Mbps should be shifted by 16 */
46 #define VMXNET3_LINK_SPEED (1000 << 16)
47
48 /* Link status: 1 - up, 0 - down. */
49 #define VMXNET3_LINK_STATUS_UP 0x1
50
51 /* Least significant bit should be set for revision and version */
52 #define VMXNET3_DEVICE_VERSION 0x1
53 #define VMXNET3_DEVICE_REVISION 0x1
54
55 /* Number of interrupt vectors for non-MSIx modes */
56 #define VMXNET3_MAX_NMSIX_INTRS (1)
57
58 /* Macros for rings descriptors access */
59 #define VMXNET3_READ_TX_QUEUE_DESCR8(dpa, field) \
60 (vmw_shmem_ld8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
61
62 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(dpa, field, value) \
63 (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
64
65 #define VMXNET3_READ_TX_QUEUE_DESCR32(dpa, field) \
66 (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
67
68 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(dpa, field, value) \
69 (vmw_shmem_st32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
70
71 #define VMXNET3_READ_TX_QUEUE_DESCR64(dpa, field) \
72 (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
73
74 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(dpa, field, value) \
75 (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
76
77 #define VMXNET3_READ_RX_QUEUE_DESCR64(dpa, field) \
78 (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
79
80 #define VMXNET3_READ_RX_QUEUE_DESCR32(dpa, field) \
81 (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
82
83 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(dpa, field, value) \
84 (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
85
86 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(dpa, field, value) \
87 (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
88
89 /* Macros for guest driver shared area access */
90 #define VMXNET3_READ_DRV_SHARED64(shpa, field) \
91 (vmw_shmem_ld64(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
92
93 #define VMXNET3_READ_DRV_SHARED32(shpa, field) \
94 (vmw_shmem_ld32(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
95
96 #define VMXNET3_WRITE_DRV_SHARED32(shpa, field, val) \
97 (vmw_shmem_st32(shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
98
99 #define VMXNET3_READ_DRV_SHARED16(shpa, field) \
100 (vmw_shmem_ld16(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
101
102 #define VMXNET3_READ_DRV_SHARED8(shpa, field) \
103 (vmw_shmem_ld8(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
104
105 #define VMXNET3_READ_DRV_SHARED(shpa, field, b, l) \
106 (vmw_shmem_read(shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
107
108 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
109
110 #define TYPE_VMXNET3 "vmxnet3"
111 #define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
112
113 /* Cyclic ring abstraction */
114 typedef struct {
115 hwaddr pa;
116 size_t size;
117 size_t cell_size;
118 size_t next;
119 uint8_t gen;
120 } Vmxnet3Ring;
121
122 static inline void vmxnet3_ring_init(Vmxnet3Ring *ring,
123 hwaddr pa,
124 size_t size,
125 size_t cell_size,
126 bool zero_region)
127 {
128 ring->pa = pa;
129 ring->size = size;
130 ring->cell_size = cell_size;
131 ring->gen = VMXNET3_INIT_GEN;
132 ring->next = 0;
133
134 if (zero_region) {
135 vmw_shmem_set(pa, 0, size * cell_size);
136 }
137 }
138
139 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
140 macro("%s#%d: base %" PRIx64 " size %lu cell_size %lu gen %d next %lu", \
141 (ring_name), (ridx), \
142 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
143
144 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
145 {
146 if (++ring->next >= ring->size) {
147 ring->next = 0;
148 ring->gen ^= 1;
149 }
150 }
151
152 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
153 {
154 if (ring->next-- == 0) {
155 ring->next = ring->size - 1;
156 ring->gen ^= 1;
157 }
158 }
159
160 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
161 {
162 return ring->pa + ring->next * ring->cell_size;
163 }
164
165 static inline void vmxnet3_ring_read_curr_cell(Vmxnet3Ring *ring, void *buff)
166 {
167 vmw_shmem_read(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
168 }
169
170 static inline void vmxnet3_ring_write_curr_cell(Vmxnet3Ring *ring, void *buff)
171 {
172 vmw_shmem_write(vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
173 }
174
175 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
176 {
177 return ring->next;
178 }
179
180 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
181 {
182 return ring->gen;
183 }
184
185 /* Debug trace-related functions */
186 static inline void
187 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
188 {
189 VMW_PKPRN("TX DESCR: "
190 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
191 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
192 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
193 le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
194 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
195 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
196 }
197
198 static inline void
199 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
200 {
201 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
202 "csum_start: %d, csum_offset: %d",
203 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
204 vhdr->csum_start, vhdr->csum_offset);
205 }
206
207 static inline void
208 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
209 {
210 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
211 "dtype: %d, ext1: %d, btype: %d",
212 le64_to_cpu(descr->addr), descr->len, descr->gen,
213 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
214 }
215
216 /* Device state and helper functions */
217 #define VMXNET3_RX_RINGS_PER_QUEUE (2)
218
219 typedef struct {
220 Vmxnet3Ring tx_ring;
221 Vmxnet3Ring comp_ring;
222
223 uint8_t intr_idx;
224 hwaddr tx_stats_pa;
225 struct UPT1_TxStats txq_stats;
226 } Vmxnet3TxqDescr;
227
228 typedef struct {
229 Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
230 Vmxnet3Ring comp_ring;
231 uint8_t intr_idx;
232 hwaddr rx_stats_pa;
233 struct UPT1_RxStats rxq_stats;
234 } Vmxnet3RxqDescr;
235
236 typedef struct {
237 bool is_masked;
238 bool is_pending;
239 bool is_asserted;
240 } Vmxnet3IntState;
241
242 typedef struct {
243 PCIDevice parent_obj;
244 NICState *nic;
245 NICConf conf;
246 MemoryRegion bar0;
247 MemoryRegion bar1;
248 MemoryRegion msix_bar;
249
250 Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
251 Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
252
253 /* Whether MSI-X support was installed successfully */
254 bool msix_used;
255 /* Whether MSI support was installed successfully */
256 bool msi_used;
257 hwaddr drv_shmem;
258 hwaddr temp_shared_guest_driver_memory;
259
260 uint8_t txq_num;
261
262 /* This boolean tells whether RX packet being indicated has to */
263 /* be split into head and body chunks from different RX rings */
264 bool rx_packets_compound;
265
266 bool rx_vlan_stripping;
267 bool lro_supported;
268
269 uint8_t rxq_num;
270
271 /* Network MTU */
272 uint32_t mtu;
273
274 /* Maximum number of fragments for indicated TX packets */
275 uint32_t max_tx_frags;
276
277 /* Maximum number of fragments for indicated RX packets */
278 uint16_t max_rx_frags;
279
280 /* Index for events interrupt */
281 uint8_t event_int_idx;
282
283 /* Whether automatic interrupts masking enabled */
284 bool auto_int_masking;
285
286 bool peer_has_vhdr;
287
288 /* TX packets to QEMU interface */
289 struct VmxnetTxPkt *tx_pkt;
290 uint32_t offload_mode;
291 uint32_t cso_or_gso_size;
292 uint16_t tci;
293 bool needs_vlan;
294
295 struct VmxnetRxPkt *rx_pkt;
296
297 bool tx_sop;
298 bool skip_current_tx_pkt;
299
300 uint32_t device_active;
301 uint32_t last_command;
302
303 uint32_t link_status_and_speed;
304
305 Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
306
307 uint32_t temp_mac; /* To store the low part first */
308
309 MACAddr perm_mac;
310 uint32_t vlan_table[VMXNET3_VFT_SIZE];
311 uint32_t rx_mode;
312 MACAddr *mcast_list;
313 uint32_t mcast_list_len;
314 uint32_t mcast_list_buff_size; /* needed for live migration. */
315 } VMXNET3State;
316
317 /* Interrupt management */
318
319 /*
320 *This function returns sign whether interrupt line is in asserted state
321 * This depends on the type of interrupt used. For INTX interrupt line will
322 * be asserted until explicit deassertion, for MSI(X) interrupt line will
323 * be deasserted automatically due to notification semantics of the MSI(X)
324 * interrupts
325 */
326 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
327 {
328 PCIDevice *d = PCI_DEVICE(s);
329
330 if (s->msix_used && msix_enabled(d)) {
331 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
332 msix_notify(d, int_idx);
333 return false;
334 }
335 if (s->msi_used && msi_enabled(d)) {
336 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
337 msi_notify(d, int_idx);
338 return false;
339 }
340
341 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
342 pci_irq_assert(d);
343 return true;
344 }
345
346 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
347 {
348 PCIDevice *d = PCI_DEVICE(s);
349
350 /*
351 * This function should never be called for MSI(X) interrupts
352 * because deassertion never required for message interrupts
353 */
354 assert(!s->msix_used || !msix_enabled(d));
355 /*
356 * This function should never be called for MSI(X) interrupts
357 * because deassertion never required for message interrupts
358 */
359 assert(!s->msi_used || !msi_enabled(d));
360
361 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
362 pci_irq_deassert(d);
363 }
364
365 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
366 {
367 if (!s->interrupt_states[lidx].is_pending &&
368 s->interrupt_states[lidx].is_asserted) {
369 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
370 _vmxnet3_deassert_interrupt_line(s, lidx);
371 s->interrupt_states[lidx].is_asserted = false;
372 return;
373 }
374
375 if (s->interrupt_states[lidx].is_pending &&
376 !s->interrupt_states[lidx].is_masked &&
377 !s->interrupt_states[lidx].is_asserted) {
378 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
379 s->interrupt_states[lidx].is_asserted =
380 _vmxnet3_assert_interrupt_line(s, lidx);
381 s->interrupt_states[lidx].is_pending = false;
382 return;
383 }
384 }
385
386 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
387 {
388 PCIDevice *d = PCI_DEVICE(s);
389 s->interrupt_states[lidx].is_pending = true;
390 vmxnet3_update_interrupt_line_state(s, lidx);
391
392 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
393 goto do_automask;
394 }
395
396 if (s->msi_used && msi_enabled(d) && s->auto_int_masking) {
397 goto do_automask;
398 }
399
400 return;
401
402 do_automask:
403 s->interrupt_states[lidx].is_masked = true;
404 vmxnet3_update_interrupt_line_state(s, lidx);
405 }
406
407 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
408 {
409 return s->interrupt_states[lidx].is_asserted;
410 }
411
412 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
413 {
414 s->interrupt_states[int_idx].is_pending = false;
415 if (s->auto_int_masking) {
416 s->interrupt_states[int_idx].is_masked = true;
417 }
418 vmxnet3_update_interrupt_line_state(s, int_idx);
419 }
420
421 static void
422 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
423 {
424 s->interrupt_states[lidx].is_masked = is_masked;
425 vmxnet3_update_interrupt_line_state(s, lidx);
426 }
427
428 static bool vmxnet3_verify_driver_magic(hwaddr dshmem)
429 {
430 return (VMXNET3_READ_DRV_SHARED32(dshmem, magic) == VMXNET3_REV1_MAGIC);
431 }
432
433 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
434 #define VMXNET3_MAKE_BYTE(byte_num, val) \
435 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
436
437 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
438 {
439 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
440 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
441 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
442 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
443 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
444 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
445
446 VMW_CFPRN("Variable MAC: " VMXNET_MF, VMXNET_MA(s->conf.macaddr.a));
447
448 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
449 }
450
451 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
452 {
453 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
454 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
455 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
456 VMXNET3_MAKE_BYTE(3, addr->a[3]);
457 }
458
459 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
460 {
461 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
462 VMXNET3_MAKE_BYTE(1, addr->a[5]);
463 }
464
465 static void
466 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
467 {
468 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
469 }
470
471 static inline void
472 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
473 {
474 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
475 }
476
477 static inline void
478 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
479 {
480 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
481 }
482
483 static void
484 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
485 {
486 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
487 }
488
489 static void
490 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
491 {
492 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
493 }
494
495 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32 tx_ridx)
496 {
497 struct Vmxnet3_TxCompDesc txcq_descr;
498
499 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
500
501 txcq_descr.txdIdx = tx_ridx;
502 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
503
504 vmxnet3_ring_write_curr_cell(&s->txq_descr[qidx].comp_ring, &txcq_descr);
505
506 /* Flush changes in TX descriptor before changing the counter value */
507 smp_wmb();
508
509 vmxnet3_inc_tx_completion_counter(s, qidx);
510 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
511 }
512
513 static bool
514 vmxnet3_setup_tx_offloads(VMXNET3State *s)
515 {
516 switch (s->offload_mode) {
517 case VMXNET3_OM_NONE:
518 vmxnet_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
519 break;
520
521 case VMXNET3_OM_CSUM:
522 vmxnet_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
523 VMW_PKPRN("L4 CSO requested\n");
524 break;
525
526 case VMXNET3_OM_TSO:
527 vmxnet_tx_pkt_build_vheader(s->tx_pkt, true, true,
528 s->cso_or_gso_size);
529 vmxnet_tx_pkt_update_ip_checksums(s->tx_pkt);
530 VMW_PKPRN("GSO offload requested.");
531 break;
532
533 default:
534 g_assert_not_reached();
535 return false;
536 }
537
538 return true;
539 }
540
541 static void
542 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
543 const struct Vmxnet3_TxDesc *txd)
544 {
545 s->offload_mode = txd->om;
546 s->cso_or_gso_size = txd->msscof;
547 s->tci = txd->tci;
548 s->needs_vlan = txd->ti;
549 }
550
551 typedef enum {
552 VMXNET3_PKT_STATUS_OK,
553 VMXNET3_PKT_STATUS_ERROR,
554 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
555 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
556 } Vmxnet3PktStatus;
557
558 static void
559 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
560 Vmxnet3PktStatus status)
561 {
562 size_t tot_len = vmxnet_tx_pkt_get_total_len(s->tx_pkt);
563 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
564
565 switch (status) {
566 case VMXNET3_PKT_STATUS_OK:
567 switch (vmxnet_tx_pkt_get_packet_type(s->tx_pkt)) {
568 case ETH_PKT_BCAST:
569 stats->bcastPktsTxOK++;
570 stats->bcastBytesTxOK += tot_len;
571 break;
572 case ETH_PKT_MCAST:
573 stats->mcastPktsTxOK++;
574 stats->mcastBytesTxOK += tot_len;
575 break;
576 case ETH_PKT_UCAST:
577 stats->ucastPktsTxOK++;
578 stats->ucastBytesTxOK += tot_len;
579 break;
580 default:
581 g_assert_not_reached();
582 }
583
584 if (s->offload_mode == VMXNET3_OM_TSO) {
585 /*
586 * According to VMWARE headers this statistic is a number
587 * of packets after segmentation but since we don't have
588 * this information in QEMU model, the best we can do is to
589 * provide number of non-segmented packets
590 */
591 stats->TSOPktsTxOK++;
592 stats->TSOBytesTxOK += tot_len;
593 }
594 break;
595
596 case VMXNET3_PKT_STATUS_DISCARD:
597 stats->pktsTxDiscard++;
598 break;
599
600 case VMXNET3_PKT_STATUS_ERROR:
601 stats->pktsTxError++;
602 break;
603
604 default:
605 g_assert_not_reached();
606 }
607 }
608
609 static void
610 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
611 int qidx,
612 Vmxnet3PktStatus status)
613 {
614 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
615 size_t tot_len = vmxnet_rx_pkt_get_total_len(s->rx_pkt);
616
617 switch (status) {
618 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
619 stats->pktsRxOutOfBuf++;
620 break;
621
622 case VMXNET3_PKT_STATUS_ERROR:
623 stats->pktsRxError++;
624 break;
625 case VMXNET3_PKT_STATUS_OK:
626 switch (vmxnet_rx_pkt_get_packet_type(s->rx_pkt)) {
627 case ETH_PKT_BCAST:
628 stats->bcastPktsRxOK++;
629 stats->bcastBytesRxOK += tot_len;
630 break;
631 case ETH_PKT_MCAST:
632 stats->mcastPktsRxOK++;
633 stats->mcastBytesRxOK += tot_len;
634 break;
635 case ETH_PKT_UCAST:
636 stats->ucastPktsRxOK++;
637 stats->ucastBytesRxOK += tot_len;
638 break;
639 default:
640 g_assert_not_reached();
641 }
642
643 if (tot_len > s->mtu) {
644 stats->LROPktsRxOK++;
645 stats->LROBytesRxOK += tot_len;
646 }
647 break;
648 default:
649 g_assert_not_reached();
650 }
651 }
652
653 static inline bool
654 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
655 int qidx,
656 struct Vmxnet3_TxDesc *txd,
657 uint32_t *descr_idx)
658 {
659 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
660
661 vmxnet3_ring_read_curr_cell(ring, txd);
662 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
663 /* Only read after generation field verification */
664 smp_rmb();
665 /* Re-read to be sure we got the latest version */
666 vmxnet3_ring_read_curr_cell(ring, txd);
667 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
668 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
669 vmxnet3_inc_tx_consumption_counter(s, qidx);
670 return true;
671 }
672
673 return false;
674 }
675
676 static bool
677 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
678 {
679 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
680
681 if (!vmxnet3_setup_tx_offloads(s)) {
682 status = VMXNET3_PKT_STATUS_ERROR;
683 goto func_exit;
684 }
685
686 /* debug prints */
687 vmxnet3_dump_virt_hdr(vmxnet_tx_pkt_get_vhdr(s->tx_pkt));
688 vmxnet_tx_pkt_dump(s->tx_pkt);
689
690 if (!vmxnet_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
691 status = VMXNET3_PKT_STATUS_DISCARD;
692 goto func_exit;
693 }
694
695 func_exit:
696 vmxnet3_on_tx_done_update_stats(s, qidx, status);
697 return (status == VMXNET3_PKT_STATUS_OK);
698 }
699
700 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
701 {
702 struct Vmxnet3_TxDesc txd;
703 uint32_t txd_idx;
704 uint32_t data_len;
705 hwaddr data_pa;
706
707 for (;;) {
708 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
709 break;
710 }
711
712 vmxnet3_dump_tx_descr(&txd);
713
714 if (!s->skip_current_tx_pkt) {
715 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
716 data_pa = le64_to_cpu(txd.addr);
717
718 if (!vmxnet_tx_pkt_add_raw_fragment(s->tx_pkt,
719 data_pa,
720 data_len)) {
721 s->skip_current_tx_pkt = true;
722 }
723 }
724
725 if (s->tx_sop) {
726 vmxnet3_tx_retrieve_metadata(s, &txd);
727 s->tx_sop = false;
728 }
729
730 if (txd.eop) {
731 if (!s->skip_current_tx_pkt) {
732 vmxnet_tx_pkt_parse(s->tx_pkt);
733
734 if (s->needs_vlan) {
735 vmxnet_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
736 }
737
738 vmxnet3_send_packet(s, qidx);
739 } else {
740 vmxnet3_on_tx_done_update_stats(s, qidx,
741 VMXNET3_PKT_STATUS_ERROR);
742 }
743
744 vmxnet3_complete_packet(s, qidx, txd_idx);
745 s->tx_sop = true;
746 s->skip_current_tx_pkt = false;
747 vmxnet_tx_pkt_reset(s->tx_pkt);
748 }
749 }
750 }
751
752 static inline void
753 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
754 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
755 {
756 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
757 *didx = vmxnet3_ring_curr_cell_idx(ring);
758 vmxnet3_ring_read_curr_cell(ring, dbuf);
759 }
760
761 static inline uint8_t
762 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
763 {
764 return s->rxq_descr[qidx].rx_ring[ridx].gen;
765 }
766
767 static inline hwaddr
768 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
769 {
770 uint8_t ring_gen;
771 struct Vmxnet3_RxCompDesc rxcd;
772
773 hwaddr daddr =
774 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
775
776 cpu_physical_memory_read(daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
777 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
778
779 if (rxcd.gen != ring_gen) {
780 *descr_gen = ring_gen;
781 vmxnet3_inc_rx_completion_counter(s, qidx);
782 return daddr;
783 }
784
785 return 0;
786 }
787
788 static inline void
789 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
790 {
791 vmxnet3_dec_rx_completion_counter(s, qidx);
792 }
793
794 #define RXQ_IDX (0)
795 #define RX_HEAD_BODY_RING (0)
796 #define RX_BODY_ONLY_RING (1)
797
798 static bool
799 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
800 struct Vmxnet3_RxDesc *descr_buf,
801 uint32_t *descr_idx,
802 uint32_t *ridx)
803 {
804 for (;;) {
805 uint32_t ring_gen;
806 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
807 descr_buf, descr_idx);
808
809 /* If no more free descriptors - return */
810 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
811 if (descr_buf->gen != ring_gen) {
812 return false;
813 }
814
815 /* Only read after generation field verification */
816 smp_rmb();
817 /* Re-read to be sure we got the latest version */
818 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
819 descr_buf, descr_idx);
820
821 /* Mark current descriptor as used/skipped */
822 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
823
824 /* If this is what we are looking for - return */
825 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
826 *ridx = RX_HEAD_BODY_RING;
827 return true;
828 }
829 }
830 }
831
832 static bool
833 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
834 struct Vmxnet3_RxDesc *d,
835 uint32_t *didx,
836 uint32_t *ridx)
837 {
838 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
839
840 /* Try to find corresponding descriptor in head/body ring */
841 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
842 /* Only read after generation field verification */
843 smp_rmb();
844 /* Re-read to be sure we got the latest version */
845 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
846 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
847 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
848 *ridx = RX_HEAD_BODY_RING;
849 return true;
850 }
851 }
852
853 /*
854 * If there is no free descriptors on head/body ring or next free
855 * descriptor is a head descriptor switch to body only ring
856 */
857 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
858
859 /* If no more free descriptors - return */
860 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
861 /* Only read after generation field verification */
862 smp_rmb();
863 /* Re-read to be sure we got the latest version */
864 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
865 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
866 *ridx = RX_BODY_ONLY_RING;
867 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
868 return true;
869 }
870
871 return false;
872 }
873
874 static inline bool
875 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
876 struct Vmxnet3_RxDesc *descr_buf,
877 uint32_t *descr_idx,
878 uint32_t *ridx)
879 {
880 if (is_head || !s->rx_packets_compound) {
881 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
882 } else {
883 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
884 }
885 }
886
887 static void vmxnet3_rx_update_descr(struct VmxnetRxPkt *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 (vmxnet_rx_pkt_is_vlan_stripped(pkt)) {
896 rxcd->ts = 1;
897 rxcd->tci = vmxnet_rx_pkt_get_vlan_tag(pkt);
898 }
899
900 if (!vmxnet_rx_pkt_has_virt_hdr(pkt)) {
901 goto nocsum;
902 }
903
904 vhdr = vmxnet_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 vmxnet_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_physical_memory_writev(const struct iovec *iov,
941 size_t start_iov_off,
942 hwaddr target_addr,
943 size_t bytes_to_copy)
944 {
945 size_t curr_off = 0;
946 size_t copied = 0;
947
948 while (bytes_to_copy) {
949 if (start_iov_off < (curr_off + iov->iov_len)) {
950 size_t chunk_len =
951 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
952
953 cpu_physical_memory_write(target_addr + copied,
954 iov->iov_base + start_iov_off - curr_off,
955 chunk_len);
956
957 copied += chunk_len;
958 start_iov_off += chunk_len;
959 curr_off = start_iov_off;
960 bytes_to_copy -= chunk_len;
961 } else {
962 curr_off += iov->iov_len;
963 }
964 iov++;
965 }
966 }
967
968 static bool
969 vmxnet3_indicate_packet(VMXNET3State *s)
970 {
971 struct Vmxnet3_RxDesc rxd;
972 bool is_head = true;
973 uint32_t rxd_idx;
974 uint32_t rx_ridx = 0;
975
976 struct Vmxnet3_RxCompDesc rxcd;
977 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
978 hwaddr new_rxcd_pa = 0;
979 hwaddr ready_rxcd_pa = 0;
980 struct iovec *data = vmxnet_rx_pkt_get_iovec(s->rx_pkt);
981 size_t bytes_copied = 0;
982 size_t bytes_left = vmxnet_rx_pkt_get_total_len(s->rx_pkt);
983 uint16_t num_frags = 0;
984 size_t chunk_size;
985
986 vmxnet_rx_pkt_dump(s->rx_pkt);
987
988 while (bytes_left > 0) {
989
990 /* cannot add more frags to packet */
991 if (num_frags == s->max_rx_frags) {
992 break;
993 }
994
995 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
996 if (!new_rxcd_pa) {
997 break;
998 }
999
1000 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1001 break;
1002 }
1003
1004 chunk_size = MIN(bytes_left, rxd.len);
1005 vmxnet3_physical_memory_writev(data, bytes_copied,
1006 le64_to_cpu(rxd.addr), chunk_size);
1007 bytes_copied += chunk_size;
1008 bytes_left -= chunk_size;
1009
1010 vmxnet3_dump_rx_descr(&rxd);
1011
1012 if (0 != ready_rxcd_pa) {
1013 cpu_physical_memory_write(ready_rxcd_pa, &rxcd, sizeof(rxcd));
1014 }
1015
1016 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1017 rxcd.rxdIdx = rxd_idx;
1018 rxcd.len = chunk_size;
1019 rxcd.sop = is_head;
1020 rxcd.gen = new_rxcd_gen;
1021 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1022
1023 if (0 == bytes_left) {
1024 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1025 }
1026
1027 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1028 "sop %d csum_correct %lu",
1029 (unsigned long) rx_ridx,
1030 (unsigned long) rxcd.rxdIdx,
1031 (unsigned long) rxcd.len,
1032 (int) rxcd.sop,
1033 (unsigned long) rxcd.tuc);
1034
1035 is_head = false;
1036 ready_rxcd_pa = new_rxcd_pa;
1037 new_rxcd_pa = 0;
1038 num_frags++;
1039 }
1040
1041 if (0 != ready_rxcd_pa) {
1042 rxcd.eop = 1;
1043 rxcd.err = (0 != bytes_left);
1044 cpu_physical_memory_write(ready_rxcd_pa, &rxcd, sizeof(rxcd));
1045
1046 /* Flush RX descriptor changes */
1047 smp_wmb();
1048 }
1049
1050 if (0 != new_rxcd_pa) {
1051 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1052 }
1053
1054 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1055
1056 if (bytes_left == 0) {
1057 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1058 return true;
1059 } else if (num_frags == s->max_rx_frags) {
1060 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1061 return false;
1062 } else {
1063 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1064 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1065 return false;
1066 }
1067 }
1068
1069 static void
1070 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1071 uint64_t val, unsigned size)
1072 {
1073 VMXNET3State *s = opaque;
1074
1075 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1076 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1077 int tx_queue_idx =
1078 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1079 VMXNET3_REG_ALIGN);
1080 assert(tx_queue_idx <= s->txq_num);
1081 vmxnet3_process_tx_queue(s, tx_queue_idx);
1082 return;
1083 }
1084
1085 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1086 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1087 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1088 VMXNET3_REG_ALIGN);
1089
1090 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1091
1092 vmxnet3_on_interrupt_mask_changed(s, l, val);
1093 return;
1094 }
1095
1096 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1097 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1098 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1099 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1100 return;
1101 }
1102
1103 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1104 (uint64_t) addr, val, size);
1105 }
1106
1107 static uint64_t
1108 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1109 {
1110 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1111 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1112 g_assert_not_reached();
1113 }
1114
1115 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1116 return 0;
1117 }
1118
1119 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1120 {
1121 int i;
1122 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1123 s->interrupt_states[i].is_asserted = false;
1124 s->interrupt_states[i].is_pending = false;
1125 s->interrupt_states[i].is_masked = true;
1126 }
1127 }
1128
1129 static void vmxnet3_reset_mac(VMXNET3State *s)
1130 {
1131 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1132 VMW_CFPRN("MAC address set to: " VMXNET_MF, VMXNET_MA(s->conf.macaddr.a));
1133 }
1134
1135 static void vmxnet3_deactivate_device(VMXNET3State *s)
1136 {
1137 VMW_CBPRN("Deactivating vmxnet3...");
1138 s->device_active = false;
1139 }
1140
1141 static void vmxnet3_reset(VMXNET3State *s)
1142 {
1143 VMW_CBPRN("Resetting vmxnet3...");
1144
1145 vmxnet3_deactivate_device(s);
1146 vmxnet3_reset_interrupt_states(s);
1147 vmxnet_tx_pkt_reset(s->tx_pkt);
1148 s->drv_shmem = 0;
1149 s->tx_sop = true;
1150 s->skip_current_tx_pkt = false;
1151 }
1152
1153 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1154 {
1155 s->rx_mode = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
1156 devRead.rxFilterConf.rxMode);
1157 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1158 }
1159
1160 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1161 {
1162 int i;
1163
1164 /* Copy configuration from shared memory */
1165 VMXNET3_READ_DRV_SHARED(s->drv_shmem,
1166 devRead.rxFilterConf.vfTable,
1167 s->vlan_table,
1168 sizeof(s->vlan_table));
1169
1170 /* Invert byte order when needed */
1171 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1172 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1173 }
1174
1175 /* Dump configuration for debugging purposes */
1176 VMW_CFPRN("Configured VLANs:");
1177 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1178 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1179 VMW_CFPRN("\tVLAN %d is present", i);
1180 }
1181 }
1182 }
1183
1184 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1185 {
1186 uint16_t list_bytes =
1187 VMXNET3_READ_DRV_SHARED16(s->drv_shmem,
1188 devRead.rxFilterConf.mfTableLen);
1189
1190 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1191
1192 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1193 if (NULL == s->mcast_list) {
1194 if (0 == s->mcast_list_len) {
1195 VMW_CFPRN("Current multicast list is empty");
1196 } else {
1197 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1198 s->mcast_list_len);
1199 }
1200 s->mcast_list_len = 0;
1201 } else {
1202 int i;
1203 hwaddr mcast_list_pa =
1204 VMXNET3_READ_DRV_SHARED64(s->drv_shmem,
1205 devRead.rxFilterConf.mfTablePA);
1206
1207 cpu_physical_memory_read(mcast_list_pa, s->mcast_list, list_bytes);
1208 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1209 for (i = 0; i < s->mcast_list_len; i++) {
1210 VMW_CFPRN("\t" VMXNET_MF, VMXNET_MA(s->mcast_list[i].a));
1211 }
1212 }
1213 }
1214
1215 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1216 {
1217 vmxnet3_update_rx_mode(s);
1218 vmxnet3_update_vlan_filters(s);
1219 vmxnet3_update_mcast_filters(s);
1220 }
1221
1222 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1223 {
1224 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1225 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1226 return interrupt_mode;
1227 }
1228
1229 static void vmxnet3_fill_stats(VMXNET3State *s)
1230 {
1231 int i;
1232 for (i = 0; i < s->txq_num; i++) {
1233 cpu_physical_memory_write(s->txq_descr[i].tx_stats_pa,
1234 &s->txq_descr[i].txq_stats,
1235 sizeof(s->txq_descr[i].txq_stats));
1236 }
1237
1238 for (i = 0; i < s->rxq_num; i++) {
1239 cpu_physical_memory_write(s->rxq_descr[i].rx_stats_pa,
1240 &s->rxq_descr[i].rxq_stats,
1241 sizeof(s->rxq_descr[i].rxq_stats));
1242 }
1243 }
1244
1245 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1246 {
1247 struct Vmxnet3_GOSInfo gos;
1248
1249 VMXNET3_READ_DRV_SHARED(s->drv_shmem, devRead.misc.driverInfo.gos,
1250 &gos, sizeof(gos));
1251 s->rx_packets_compound =
1252 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1253
1254 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1255 }
1256
1257 static void
1258 vmxnet3_dump_conf_descr(const char *name,
1259 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1260 {
1261 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1262 name, pm_descr->confVer, pm_descr->confLen);
1263
1264 };
1265
1266 static void vmxnet3_update_pm_state(VMXNET3State *s)
1267 {
1268 struct Vmxnet3_VariableLenConfDesc pm_descr;
1269
1270 pm_descr.confLen =
1271 VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confLen);
1272 pm_descr.confVer =
1273 VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.pmConfDesc.confVer);
1274 pm_descr.confPA =
1275 VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.pmConfDesc.confPA);
1276
1277 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1278 }
1279
1280 static void vmxnet3_update_features(VMXNET3State *s)
1281 {
1282 uint32_t guest_features;
1283 int rxcso_supported;
1284
1285 guest_features = VMXNET3_READ_DRV_SHARED32(s->drv_shmem,
1286 devRead.misc.uptFeatures);
1287
1288 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1289 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1290 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1291
1292 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1293 s->lro_supported, rxcso_supported,
1294 s->rx_vlan_stripping);
1295 if (s->peer_has_vhdr) {
1296 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1297 rxcso_supported,
1298 s->lro_supported,
1299 s->lro_supported,
1300 0,
1301 0);
1302 }
1303 }
1304
1305 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1306 {
1307 return s->msix_used || s->msi_used || (intx ==
1308 (pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1));
1309 }
1310
1311 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1312 {
1313 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1314 if (idx >= max_ints) {
1315 hw_error("Bad interrupt index: %d\n", idx);
1316 }
1317 }
1318
1319 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1320 {
1321 int i;
1322
1323 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1324 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1325
1326 for (i = 0; i < s->txq_num; i++) {
1327 int idx = s->txq_descr[i].intr_idx;
1328 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1329 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1330 }
1331
1332 for (i = 0; i < s->rxq_num; i++) {
1333 int idx = s->rxq_descr[i].intr_idx;
1334 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1335 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1336 }
1337 }
1338
1339 static void vmxnet3_validate_queues(VMXNET3State *s)
1340 {
1341 /*
1342 * txq_num and rxq_num are total number of queues
1343 * configured by guest. These numbers must not
1344 * exceed corresponding maximal values.
1345 */
1346
1347 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1348 hw_error("Bad TX queues number: %d\n", s->txq_num);
1349 }
1350
1351 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1352 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1353 }
1354 }
1355
1356 static void vmxnet3_activate_device(VMXNET3State *s)
1357 {
1358 int i;
1359 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1360 hwaddr qdescr_table_pa;
1361 uint64_t pa;
1362 uint32_t size;
1363
1364 /* Verify configuration consistency */
1365 if (!vmxnet3_verify_driver_magic(s->drv_shmem)) {
1366 VMW_ERPRN("Device configuration received from driver is invalid");
1367 return;
1368 }
1369
1370 vmxnet3_adjust_by_guest_type(s);
1371 vmxnet3_update_features(s);
1372 vmxnet3_update_pm_state(s);
1373 vmxnet3_setup_rx_filtering(s);
1374 /* Cache fields from shared memory */
1375 s->mtu = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, devRead.misc.mtu);
1376 VMW_CFPRN("MTU is %u", s->mtu);
1377
1378 s->max_rx_frags =
1379 VMXNET3_READ_DRV_SHARED16(s->drv_shmem, devRead.misc.maxNumRxSG);
1380
1381 if (s->max_rx_frags == 0) {
1382 s->max_rx_frags = 1;
1383 }
1384
1385 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1386
1387 s->event_int_idx =
1388 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.eventIntrIdx);
1389 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1390 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1391
1392 s->auto_int_masking =
1393 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.intrConf.autoMask);
1394 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1395
1396 s->txq_num =
1397 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numTxQueues);
1398 s->rxq_num =
1399 VMXNET3_READ_DRV_SHARED8(s->drv_shmem, devRead.misc.numRxQueues);
1400
1401 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1402 vmxnet3_validate_queues(s);
1403
1404 qdescr_table_pa =
1405 VMXNET3_READ_DRV_SHARED64(s->drv_shmem, devRead.misc.queueDescPA);
1406 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1407
1408 /*
1409 * Worst-case scenario is a packet that holds all TX rings space so
1410 * we calculate total size of all TX rings for max TX fragments number
1411 */
1412 s->max_tx_frags = 0;
1413
1414 /* TX queues */
1415 for (i = 0; i < s->txq_num; i++) {
1416 hwaddr qdescr_pa =
1417 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1418
1419 /* Read interrupt number for this TX queue */
1420 s->txq_descr[i].intr_idx =
1421 VMXNET3_READ_TX_QUEUE_DESCR8(qdescr_pa, conf.intrIdx);
1422 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1423
1424 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1425
1426 /* Read rings memory locations for TX queues */
1427 pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.txRingBasePA);
1428 size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.txRingSize);
1429
1430 vmxnet3_ring_init(&s->txq_descr[i].tx_ring, pa, size,
1431 sizeof(struct Vmxnet3_TxDesc), false);
1432 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1433
1434 s->max_tx_frags += size;
1435
1436 /* TXC ring */
1437 pa = VMXNET3_READ_TX_QUEUE_DESCR64(qdescr_pa, conf.compRingBasePA);
1438 size = VMXNET3_READ_TX_QUEUE_DESCR32(qdescr_pa, conf.compRingSize);
1439 vmxnet3_ring_init(&s->txq_descr[i].comp_ring, pa, size,
1440 sizeof(struct Vmxnet3_TxCompDesc), true);
1441 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1442
1443 s->txq_descr[i].tx_stats_pa =
1444 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1445
1446 memset(&s->txq_descr[i].txq_stats, 0,
1447 sizeof(s->txq_descr[i].txq_stats));
1448
1449 /* Fill device-managed parameters for queues */
1450 VMXNET3_WRITE_TX_QUEUE_DESCR32(qdescr_pa,
1451 ctrl.txThreshold,
1452 VMXNET3_DEF_TX_THRESHOLD);
1453 }
1454
1455 /* Preallocate TX packet wrapper */
1456 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1457 vmxnet_tx_pkt_init(&s->tx_pkt, s->max_tx_frags, s->peer_has_vhdr);
1458 vmxnet_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1459
1460 /* Read rings memory locations for RX queues */
1461 for (i = 0; i < s->rxq_num; i++) {
1462 int j;
1463 hwaddr qd_pa =
1464 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1465 i * sizeof(struct Vmxnet3_RxQueueDesc);
1466
1467 /* Read interrupt number for this RX queue */
1468 s->rxq_descr[i].intr_idx =
1469 VMXNET3_READ_TX_QUEUE_DESCR8(qd_pa, conf.intrIdx);
1470 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1471
1472 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1473
1474 /* Read rings memory locations */
1475 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1476 /* RX rings */
1477 pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.rxRingBasePA[j]);
1478 size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.rxRingSize[j]);
1479 vmxnet3_ring_init(&s->rxq_descr[i].rx_ring[j], pa, size,
1480 sizeof(struct Vmxnet3_RxDesc), false);
1481 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1482 i, j, pa, size);
1483 }
1484
1485 /* RXC ring */
1486 pa = VMXNET3_READ_RX_QUEUE_DESCR64(qd_pa, conf.compRingBasePA);
1487 size = VMXNET3_READ_RX_QUEUE_DESCR32(qd_pa, conf.compRingSize);
1488 vmxnet3_ring_init(&s->rxq_descr[i].comp_ring, pa, size,
1489 sizeof(struct Vmxnet3_RxCompDesc), true);
1490 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1491
1492 s->rxq_descr[i].rx_stats_pa =
1493 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1494 memset(&s->rxq_descr[i].rxq_stats, 0,
1495 sizeof(s->rxq_descr[i].rxq_stats));
1496 }
1497
1498 vmxnet3_validate_interrupts(s);
1499
1500 /* Make sure everything is in place before device activation */
1501 smp_wmb();
1502
1503 vmxnet3_reset_mac(s);
1504
1505 s->device_active = true;
1506 }
1507
1508 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1509 {
1510 s->last_command = cmd;
1511
1512 switch (cmd) {
1513 case VMXNET3_CMD_GET_PERM_MAC_HI:
1514 VMW_CBPRN("Set: Get upper part of permanent MAC");
1515 break;
1516
1517 case VMXNET3_CMD_GET_PERM_MAC_LO:
1518 VMW_CBPRN("Set: Get lower part of permanent MAC");
1519 break;
1520
1521 case VMXNET3_CMD_GET_STATS:
1522 VMW_CBPRN("Set: Get device statistics");
1523 vmxnet3_fill_stats(s);
1524 break;
1525
1526 case VMXNET3_CMD_ACTIVATE_DEV:
1527 VMW_CBPRN("Set: Activating vmxnet3 device");
1528 vmxnet3_activate_device(s);
1529 break;
1530
1531 case VMXNET3_CMD_UPDATE_RX_MODE:
1532 VMW_CBPRN("Set: Update rx mode");
1533 vmxnet3_update_rx_mode(s);
1534 break;
1535
1536 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1537 VMW_CBPRN("Set: Update VLAN filters");
1538 vmxnet3_update_vlan_filters(s);
1539 break;
1540
1541 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1542 VMW_CBPRN("Set: Update MAC filters");
1543 vmxnet3_update_mcast_filters(s);
1544 break;
1545
1546 case VMXNET3_CMD_UPDATE_FEATURE:
1547 VMW_CBPRN("Set: Update features");
1548 vmxnet3_update_features(s);
1549 break;
1550
1551 case VMXNET3_CMD_UPDATE_PMCFG:
1552 VMW_CBPRN("Set: Update power management config");
1553 vmxnet3_update_pm_state(s);
1554 break;
1555
1556 case VMXNET3_CMD_GET_LINK:
1557 VMW_CBPRN("Set: Get link");
1558 break;
1559
1560 case VMXNET3_CMD_RESET_DEV:
1561 VMW_CBPRN("Set: Reset device");
1562 vmxnet3_reset(s);
1563 break;
1564
1565 case VMXNET3_CMD_QUIESCE_DEV:
1566 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - pause the device");
1567 vmxnet3_deactivate_device(s);
1568 break;
1569
1570 case VMXNET3_CMD_GET_CONF_INTR:
1571 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1572 break;
1573
1574 default:
1575 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1576 break;
1577 }
1578 }
1579
1580 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1581 {
1582 uint64_t ret;
1583
1584 switch (s->last_command) {
1585 case VMXNET3_CMD_ACTIVATE_DEV:
1586 ret = (s->device_active) ? 0 : -1;
1587 VMW_CFPRN("Device active: %" PRIx64, ret);
1588 break;
1589
1590 case VMXNET3_CMD_RESET_DEV:
1591 case VMXNET3_CMD_QUIESCE_DEV:
1592 case VMXNET3_CMD_GET_QUEUE_STATUS:
1593 ret = 0;
1594 break;
1595
1596 case VMXNET3_CMD_GET_LINK:
1597 ret = s->link_status_and_speed;
1598 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1599 break;
1600
1601 case VMXNET3_CMD_GET_PERM_MAC_LO:
1602 ret = vmxnet3_get_mac_low(&s->perm_mac);
1603 break;
1604
1605 case VMXNET3_CMD_GET_PERM_MAC_HI:
1606 ret = vmxnet3_get_mac_high(&s->perm_mac);
1607 break;
1608
1609 case VMXNET3_CMD_GET_CONF_INTR:
1610 ret = vmxnet3_get_interrupt_config(s);
1611 break;
1612
1613 default:
1614 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1615 ret = -1;
1616 break;
1617 }
1618
1619 return ret;
1620 }
1621
1622 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1623 {
1624 uint32_t events;
1625
1626 VMW_CBPRN("Setting events: 0x%x", val);
1627 events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) | val;
1628 VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
1629 }
1630
1631 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1632 {
1633 uint32_t events;
1634
1635 VMW_CBPRN("Clearing events: 0x%x", val);
1636 events = VMXNET3_READ_DRV_SHARED32(s->drv_shmem, ecr) & ~val;
1637 VMXNET3_WRITE_DRV_SHARED32(s->drv_shmem, ecr, events);
1638 }
1639
1640 static void
1641 vmxnet3_io_bar1_write(void *opaque,
1642 hwaddr addr,
1643 uint64_t val,
1644 unsigned size)
1645 {
1646 VMXNET3State *s = opaque;
1647
1648 switch (addr) {
1649 /* Vmxnet3 Revision Report Selection */
1650 case VMXNET3_REG_VRRS:
1651 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1652 val, size);
1653 break;
1654
1655 /* UPT Version Report Selection */
1656 case VMXNET3_REG_UVRS:
1657 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1658 val, size);
1659 break;
1660
1661 /* Driver Shared Address Low */
1662 case VMXNET3_REG_DSAL:
1663 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1664 val, size);
1665 /*
1666 * Guest driver will first write the low part of the shared
1667 * memory address. We save it to temp variable and set the
1668 * shared address only after we get the high part
1669 */
1670 if (0 == val) {
1671 s->device_active = false;
1672 }
1673 s->temp_shared_guest_driver_memory = val;
1674 s->drv_shmem = 0;
1675 break;
1676
1677 /* Driver Shared Address High */
1678 case VMXNET3_REG_DSAH:
1679 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1680 val, size);
1681 /*
1682 * Set the shared memory between guest driver and device.
1683 * We already should have low address part.
1684 */
1685 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1686 break;
1687
1688 /* Command */
1689 case VMXNET3_REG_CMD:
1690 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1691 val, size);
1692 vmxnet3_handle_command(s, val);
1693 break;
1694
1695 /* MAC Address Low */
1696 case VMXNET3_REG_MACL:
1697 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1698 val, size);
1699 s->temp_mac = val;
1700 break;
1701
1702 /* MAC Address High */
1703 case VMXNET3_REG_MACH:
1704 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1705 val, size);
1706 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1707 break;
1708
1709 /* Interrupt Cause Register */
1710 case VMXNET3_REG_ICR:
1711 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1712 val, size);
1713 g_assert_not_reached();
1714 break;
1715
1716 /* Event Cause Register */
1717 case VMXNET3_REG_ECR:
1718 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1719 val, size);
1720 vmxnet3_ack_events(s, val);
1721 break;
1722
1723 default:
1724 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1725 addr, val, size);
1726 break;
1727 }
1728 }
1729
1730 static uint64_t
1731 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1732 {
1733 VMXNET3State *s = opaque;
1734 uint64_t ret = 0;
1735
1736 switch (addr) {
1737 /* Vmxnet3 Revision Report Selection */
1738 case VMXNET3_REG_VRRS:
1739 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1740 ret = VMXNET3_DEVICE_REVISION;
1741 break;
1742
1743 /* UPT Version Report Selection */
1744 case VMXNET3_REG_UVRS:
1745 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1746 ret = VMXNET3_DEVICE_VERSION;
1747 break;
1748
1749 /* Command */
1750 case VMXNET3_REG_CMD:
1751 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1752 ret = vmxnet3_get_command_status(s);
1753 break;
1754
1755 /* MAC Address Low */
1756 case VMXNET3_REG_MACL:
1757 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1758 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1759 break;
1760
1761 /* MAC Address High */
1762 case VMXNET3_REG_MACH:
1763 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1764 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1765 break;
1766
1767 /*
1768 * Interrupt Cause Register
1769 * Used for legacy interrupts only so interrupt index always 0
1770 */
1771 case VMXNET3_REG_ICR:
1772 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1773 if (vmxnet3_interrupt_asserted(s, 0)) {
1774 vmxnet3_clear_interrupt(s, 0);
1775 ret = true;
1776 } else {
1777 ret = false;
1778 }
1779 break;
1780
1781 default:
1782 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1783 break;
1784 }
1785
1786 return ret;
1787 }
1788
1789 static int
1790 vmxnet3_can_receive(NetClientState *nc)
1791 {
1792 VMXNET3State *s = qemu_get_nic_opaque(nc);
1793 return s->device_active &&
1794 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1795 }
1796
1797 static inline bool
1798 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1799 {
1800 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1801 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1802 return true;
1803 }
1804
1805 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1806 }
1807
1808 static bool
1809 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1810 {
1811 int i;
1812 for (i = 0; i < s->mcast_list_len; i++) {
1813 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1814 return true;
1815 }
1816 }
1817 return false;
1818 }
1819
1820 static bool
1821 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1822 size_t size)
1823 {
1824 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1825
1826 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1827 return true;
1828 }
1829
1830 if (!vmxnet3_is_registered_vlan(s, data)) {
1831 return false;
1832 }
1833
1834 switch (vmxnet_rx_pkt_get_packet_type(s->rx_pkt)) {
1835 case ETH_PKT_UCAST:
1836 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1837 return false;
1838 }
1839 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1840 return false;
1841 }
1842 break;
1843
1844 case ETH_PKT_BCAST:
1845 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
1846 return false;
1847 }
1848 break;
1849
1850 case ETH_PKT_MCAST:
1851 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
1852 return true;
1853 }
1854 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
1855 return false;
1856 }
1857 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
1858 return false;
1859 }
1860 break;
1861
1862 default:
1863 g_assert_not_reached();
1864 }
1865
1866 return true;
1867 }
1868
1869 static ssize_t
1870 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
1871 {
1872 VMXNET3State *s = qemu_get_nic_opaque(nc);
1873 size_t bytes_indicated;
1874
1875 if (!vmxnet3_can_receive(nc)) {
1876 VMW_PKPRN("Cannot receive now");
1877 return -1;
1878 }
1879
1880 if (s->peer_has_vhdr) {
1881 vmxnet_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
1882 buf += sizeof(struct virtio_net_hdr);
1883 size -= sizeof(struct virtio_net_hdr);
1884 }
1885
1886 vmxnet_rx_pkt_set_packet_type(s->rx_pkt,
1887 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
1888
1889 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
1890 vmxnet_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
1891 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
1892 if (bytes_indicated < size) {
1893 VMW_PKPRN("RX: %lu of %lu bytes indicated", bytes_indicated, size);
1894 }
1895 } else {
1896 VMW_PKPRN("Packet dropped by RX filter");
1897 bytes_indicated = size;
1898 }
1899
1900 assert(size > 0);
1901 assert(bytes_indicated != 0);
1902 return bytes_indicated;
1903 }
1904
1905 static void vmxnet3_cleanup(NetClientState *nc)
1906 {
1907 VMXNET3State *s = qemu_get_nic_opaque(nc);
1908 s->nic = NULL;
1909 }
1910
1911 static void vmxnet3_set_link_status(NetClientState *nc)
1912 {
1913 VMXNET3State *s = qemu_get_nic_opaque(nc);
1914
1915 if (nc->link_down) {
1916 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
1917 } else {
1918 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
1919 }
1920
1921 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
1922 vmxnet3_trigger_interrupt(s, s->event_int_idx);
1923 }
1924
1925 static NetClientInfo net_vmxnet3_info = {
1926 .type = NET_CLIENT_OPTIONS_KIND_NIC,
1927 .size = sizeof(NICState),
1928 .can_receive = vmxnet3_can_receive,
1929 .receive = vmxnet3_receive,
1930 .cleanup = vmxnet3_cleanup,
1931 .link_status_changed = vmxnet3_set_link_status,
1932 };
1933
1934 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
1935 {
1936 NetClientState *nc = qemu_get_queue(s->nic);
1937
1938 if (qemu_has_vnet_hdr(nc->peer)) {
1939 return true;
1940 }
1941
1942 VMW_WRPRN("Peer has no virtio extension. Task offloads will be emulated.");
1943 return false;
1944 }
1945
1946 static void vmxnet3_net_uninit(VMXNET3State *s)
1947 {
1948 g_free(s->mcast_list);
1949 vmxnet_tx_pkt_reset(s->tx_pkt);
1950 vmxnet_tx_pkt_uninit(s->tx_pkt);
1951 vmxnet_rx_pkt_uninit(s->rx_pkt);
1952 qemu_del_nic(s->nic);
1953 }
1954
1955 static void vmxnet3_net_init(VMXNET3State *s)
1956 {
1957 DeviceState *d = DEVICE(s);
1958
1959 VMW_CBPRN("vmxnet3_net_init called...");
1960
1961 qemu_macaddr_default_if_unset(&s->conf.macaddr);
1962
1963 /* Windows guest will query the address that was set on init */
1964 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
1965
1966 s->mcast_list = NULL;
1967 s->mcast_list_len = 0;
1968
1969 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
1970
1971 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
1972
1973 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
1974 object_get_typename(OBJECT(s)),
1975 d->id, s);
1976
1977 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
1978 s->tx_sop = true;
1979 s->skip_current_tx_pkt = false;
1980 s->tx_pkt = NULL;
1981 s->rx_pkt = NULL;
1982 s->rx_vlan_stripping = false;
1983 s->lro_supported = false;
1984
1985 if (s->peer_has_vhdr) {
1986 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
1987 sizeof(struct virtio_net_hdr));
1988
1989 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
1990 }
1991
1992 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
1993 }
1994
1995 static void
1996 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
1997 {
1998 PCIDevice *d = PCI_DEVICE(s);
1999 int i;
2000 for (i = 0; i < num_vectors; i++) {
2001 msix_vector_unuse(d, i);
2002 }
2003 }
2004
2005 static bool
2006 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2007 {
2008 PCIDevice *d = PCI_DEVICE(s);
2009 int i;
2010 for (i = 0; i < num_vectors; i++) {
2011 int res = msix_vector_use(d, i);
2012 if (0 > res) {
2013 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2014 vmxnet3_unuse_msix_vectors(s, i);
2015 return false;
2016 }
2017 }
2018 return true;
2019 }
2020
2021 static bool
2022 vmxnet3_init_msix(VMXNET3State *s)
2023 {
2024 PCIDevice *d = PCI_DEVICE(s);
2025 int res = msix_init(d, VMXNET3_MAX_INTRS,
2026 &s->msix_bar,
2027 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2028 &s->msix_bar,
2029 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA,
2030 0);
2031
2032 if (0 > res) {
2033 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2034 s->msix_used = false;
2035 } else {
2036 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2037 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2038 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2039 s->msix_used = false;
2040 } else {
2041 s->msix_used = true;
2042 }
2043 }
2044 return s->msix_used;
2045 }
2046
2047 static void
2048 vmxnet3_cleanup_msix(VMXNET3State *s)
2049 {
2050 PCIDevice *d = PCI_DEVICE(s);
2051
2052 if (s->msix_used) {
2053 msix_vector_unuse(d, VMXNET3_MAX_INTRS);
2054 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2055 }
2056 }
2057
2058 #define VMXNET3_MSI_OFFSET (0x50)
2059 #define VMXNET3_USE_64BIT (true)
2060 #define VMXNET3_PER_VECTOR_MASK (false)
2061
2062 static bool
2063 vmxnet3_init_msi(VMXNET3State *s)
2064 {
2065 PCIDevice *d = PCI_DEVICE(s);
2066 int res;
2067
2068 res = msi_init(d, VMXNET3_MSI_OFFSET, VMXNET3_MAX_NMSIX_INTRS,
2069 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK);
2070 if (0 > res) {
2071 VMW_WRPRN("Failed to initialize MSI, error %d", res);
2072 s->msi_used = false;
2073 } else {
2074 s->msi_used = true;
2075 }
2076
2077 return s->msi_used;
2078 }
2079
2080 static void
2081 vmxnet3_cleanup_msi(VMXNET3State *s)
2082 {
2083 PCIDevice *d = PCI_DEVICE(s);
2084
2085 if (s->msi_used) {
2086 msi_uninit(d);
2087 }
2088 }
2089
2090 static void
2091 vmxnet3_msix_save(QEMUFile *f, void *opaque)
2092 {
2093 PCIDevice *d = PCI_DEVICE(opaque);
2094 msix_save(d, f);
2095 }
2096
2097 static int
2098 vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
2099 {
2100 PCIDevice *d = PCI_DEVICE(opaque);
2101 msix_load(d, f);
2102 return 0;
2103 }
2104
2105 static const MemoryRegionOps b0_ops = {
2106 .read = vmxnet3_io_bar0_read,
2107 .write = vmxnet3_io_bar0_write,
2108 .endianness = DEVICE_LITTLE_ENDIAN,
2109 .impl = {
2110 .min_access_size = 4,
2111 .max_access_size = 4,
2112 },
2113 };
2114
2115 static const MemoryRegionOps b1_ops = {
2116 .read = vmxnet3_io_bar1_read,
2117 .write = vmxnet3_io_bar1_write,
2118 .endianness = DEVICE_LITTLE_ENDIAN,
2119 .impl = {
2120 .min_access_size = 4,
2121 .max_access_size = 4,
2122 },
2123 };
2124
2125 static int vmxnet3_pci_init(PCIDevice *pci_dev)
2126 {
2127 DeviceState *dev = DEVICE(pci_dev);
2128 VMXNET3State *s = VMXNET3(pci_dev);
2129
2130 VMW_CBPRN("Starting init...");
2131
2132 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2133 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2134 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2135 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2136
2137 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2138 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2139 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2140 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2141
2142 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2143 VMXNET3_MSIX_BAR_SIZE);
2144 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2145 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2146
2147 vmxnet3_reset_interrupt_states(s);
2148
2149 /* Interrupt pin A */
2150 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2151
2152 if (!vmxnet3_init_msix(s)) {
2153 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2154 }
2155
2156 if (!vmxnet3_init_msi(s)) {
2157 VMW_WRPRN("Failed to initialize MSI, configuration is inconsistent.");
2158 }
2159
2160 vmxnet3_net_init(s);
2161
2162 register_savevm(dev, "vmxnet3-msix", -1, 1,
2163 vmxnet3_msix_save, vmxnet3_msix_load, s);
2164
2165 add_boot_device_path(s->conf.bootindex, dev, "/ethernet-phy@0");
2166
2167 return 0;
2168 }
2169
2170
2171 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2172 {
2173 DeviceState *dev = DEVICE(pci_dev);
2174 VMXNET3State *s = VMXNET3(pci_dev);
2175
2176 VMW_CBPRN("Starting uninit...");
2177
2178 unregister_savevm(dev, "vmxnet3-msix", s);
2179
2180 vmxnet3_net_uninit(s);
2181
2182 vmxnet3_cleanup_msix(s);
2183
2184 vmxnet3_cleanup_msi(s);
2185
2186 memory_region_destroy(&s->bar0);
2187 memory_region_destroy(&s->bar1);
2188 memory_region_destroy(&s->msix_bar);
2189 }
2190
2191 static void vmxnet3_qdev_reset(DeviceState *dev)
2192 {
2193 PCIDevice *d = PCI_DEVICE(dev);
2194 VMXNET3State *s = VMXNET3(d);
2195
2196 VMW_CBPRN("Starting QDEV reset...");
2197 vmxnet3_reset(s);
2198 }
2199
2200 static bool vmxnet3_mc_list_needed(void *opaque)
2201 {
2202 return true;
2203 }
2204
2205 static int vmxnet3_mcast_list_pre_load(void *opaque)
2206 {
2207 VMXNET3State *s = opaque;
2208
2209 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2210
2211 return 0;
2212 }
2213
2214
2215 static void vmxnet3_pre_save(void *opaque)
2216 {
2217 VMXNET3State *s = opaque;
2218
2219 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2220 }
2221
2222 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2223 .name = "vmxnet3/mcast_list",
2224 .version_id = 1,
2225 .minimum_version_id = 1,
2226 .minimum_version_id_old = 1,
2227 .pre_load = vmxnet3_mcast_list_pre_load,
2228 .fields = (VMStateField[]) {
2229 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL, 0,
2230 mcast_list_buff_size),
2231 VMSTATE_END_OF_LIST()
2232 }
2233 };
2234
2235 static void vmxnet3_get_ring_from_file(QEMUFile *f, Vmxnet3Ring *r)
2236 {
2237 r->pa = qemu_get_be64(f);
2238 r->size = qemu_get_be32(f);
2239 r->cell_size = qemu_get_be32(f);
2240 r->next = qemu_get_be32(f);
2241 r->gen = qemu_get_byte(f);
2242 }
2243
2244 static void vmxnet3_put_ring_to_file(QEMUFile *f, Vmxnet3Ring *r)
2245 {
2246 qemu_put_be64(f, r->pa);
2247 qemu_put_be32(f, r->size);
2248 qemu_put_be32(f, r->cell_size);
2249 qemu_put_be32(f, r->next);
2250 qemu_put_byte(f, r->gen);
2251 }
2252
2253 static void vmxnet3_get_tx_stats_from_file(QEMUFile *f,
2254 struct UPT1_TxStats *tx_stat)
2255 {
2256 tx_stat->TSOPktsTxOK = qemu_get_be64(f);
2257 tx_stat->TSOBytesTxOK = qemu_get_be64(f);
2258 tx_stat->ucastPktsTxOK = qemu_get_be64(f);
2259 tx_stat->ucastBytesTxOK = qemu_get_be64(f);
2260 tx_stat->mcastPktsTxOK = qemu_get_be64(f);
2261 tx_stat->mcastBytesTxOK = qemu_get_be64(f);
2262 tx_stat->bcastPktsTxOK = qemu_get_be64(f);
2263 tx_stat->bcastBytesTxOK = qemu_get_be64(f);
2264 tx_stat->pktsTxError = qemu_get_be64(f);
2265 tx_stat->pktsTxDiscard = qemu_get_be64(f);
2266 }
2267
2268 static void vmxnet3_put_tx_stats_to_file(QEMUFile *f,
2269 struct UPT1_TxStats *tx_stat)
2270 {
2271 qemu_put_be64(f, tx_stat->TSOPktsTxOK);
2272 qemu_put_be64(f, tx_stat->TSOBytesTxOK);
2273 qemu_put_be64(f, tx_stat->ucastPktsTxOK);
2274 qemu_put_be64(f, tx_stat->ucastBytesTxOK);
2275 qemu_put_be64(f, tx_stat->mcastPktsTxOK);
2276 qemu_put_be64(f, tx_stat->mcastBytesTxOK);
2277 qemu_put_be64(f, tx_stat->bcastPktsTxOK);
2278 qemu_put_be64(f, tx_stat->bcastBytesTxOK);
2279 qemu_put_be64(f, tx_stat->pktsTxError);
2280 qemu_put_be64(f, tx_stat->pktsTxDiscard);
2281 }
2282
2283 static int vmxnet3_get_txq_descr(QEMUFile *f, void *pv, size_t size)
2284 {
2285 Vmxnet3TxqDescr *r = pv;
2286
2287 vmxnet3_get_ring_from_file(f, &r->tx_ring);
2288 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2289 r->intr_idx = qemu_get_byte(f);
2290 r->tx_stats_pa = qemu_get_be64(f);
2291
2292 vmxnet3_get_tx_stats_from_file(f, &r->txq_stats);
2293
2294 return 0;
2295 }
2296
2297 static void vmxnet3_put_txq_descr(QEMUFile *f, void *pv, size_t size)
2298 {
2299 Vmxnet3TxqDescr *r = pv;
2300
2301 vmxnet3_put_ring_to_file(f, &r->tx_ring);
2302 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2303 qemu_put_byte(f, r->intr_idx);
2304 qemu_put_be64(f, r->tx_stats_pa);
2305 vmxnet3_put_tx_stats_to_file(f, &r->txq_stats);
2306 }
2307
2308 const VMStateInfo txq_descr_info = {
2309 .name = "txq_descr",
2310 .get = vmxnet3_get_txq_descr,
2311 .put = vmxnet3_put_txq_descr
2312 };
2313
2314 static void vmxnet3_get_rx_stats_from_file(QEMUFile *f,
2315 struct UPT1_RxStats *rx_stat)
2316 {
2317 rx_stat->LROPktsRxOK = qemu_get_be64(f);
2318 rx_stat->LROBytesRxOK = qemu_get_be64(f);
2319 rx_stat->ucastPktsRxOK = qemu_get_be64(f);
2320 rx_stat->ucastBytesRxOK = qemu_get_be64(f);
2321 rx_stat->mcastPktsRxOK = qemu_get_be64(f);
2322 rx_stat->mcastBytesRxOK = qemu_get_be64(f);
2323 rx_stat->bcastPktsRxOK = qemu_get_be64(f);
2324 rx_stat->bcastBytesRxOK = qemu_get_be64(f);
2325 rx_stat->pktsRxOutOfBuf = qemu_get_be64(f);
2326 rx_stat->pktsRxError = qemu_get_be64(f);
2327 }
2328
2329 static void vmxnet3_put_rx_stats_to_file(QEMUFile *f,
2330 struct UPT1_RxStats *rx_stat)
2331 {
2332 qemu_put_be64(f, rx_stat->LROPktsRxOK);
2333 qemu_put_be64(f, rx_stat->LROBytesRxOK);
2334 qemu_put_be64(f, rx_stat->ucastPktsRxOK);
2335 qemu_put_be64(f, rx_stat->ucastBytesRxOK);
2336 qemu_put_be64(f, rx_stat->mcastPktsRxOK);
2337 qemu_put_be64(f, rx_stat->mcastBytesRxOK);
2338 qemu_put_be64(f, rx_stat->bcastPktsRxOK);
2339 qemu_put_be64(f, rx_stat->bcastBytesRxOK);
2340 qemu_put_be64(f, rx_stat->pktsRxOutOfBuf);
2341 qemu_put_be64(f, rx_stat->pktsRxError);
2342 }
2343
2344 static int vmxnet3_get_rxq_descr(QEMUFile *f, void *pv, size_t size)
2345 {
2346 Vmxnet3RxqDescr *r = pv;
2347 int i;
2348
2349 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2350 vmxnet3_get_ring_from_file(f, &r->rx_ring[i]);
2351 }
2352
2353 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2354 r->intr_idx = qemu_get_byte(f);
2355 r->rx_stats_pa = qemu_get_be64(f);
2356
2357 vmxnet3_get_rx_stats_from_file(f, &r->rxq_stats);
2358
2359 return 0;
2360 }
2361
2362 static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size)
2363 {
2364 Vmxnet3RxqDescr *r = pv;
2365 int i;
2366
2367 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2368 vmxnet3_put_ring_to_file(f, &r->rx_ring[i]);
2369 }
2370
2371 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2372 qemu_put_byte(f, r->intr_idx);
2373 qemu_put_be64(f, r->rx_stats_pa);
2374 vmxnet3_put_rx_stats_to_file(f, &r->rxq_stats);
2375 }
2376
2377 static int vmxnet3_post_load(void *opaque, int version_id)
2378 {
2379 VMXNET3State *s = opaque;
2380 PCIDevice *d = PCI_DEVICE(s);
2381
2382 vmxnet_tx_pkt_init(&s->tx_pkt, s->max_tx_frags, s->peer_has_vhdr);
2383 vmxnet_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2384
2385 if (s->msix_used) {
2386 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2387 VMW_WRPRN("Failed to re-use MSI-X vectors");
2388 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2389 s->msix_used = false;
2390 return -1;
2391 }
2392 }
2393
2394 vmxnet3_validate_queues(s);
2395 vmxnet3_validate_interrupts(s);
2396
2397 return 0;
2398 }
2399
2400 const VMStateInfo rxq_descr_info = {
2401 .name = "rxq_descr",
2402 .get = vmxnet3_get_rxq_descr,
2403 .put = vmxnet3_put_rxq_descr
2404 };
2405
2406 static int vmxnet3_get_int_state(QEMUFile *f, void *pv, size_t size)
2407 {
2408 Vmxnet3IntState *r = pv;
2409
2410 r->is_masked = qemu_get_byte(f);
2411 r->is_pending = qemu_get_byte(f);
2412 r->is_asserted = qemu_get_byte(f);
2413
2414 return 0;
2415 }
2416
2417 static void vmxnet3_put_int_state(QEMUFile *f, void *pv, size_t size)
2418 {
2419 Vmxnet3IntState *r = pv;
2420
2421 qemu_put_byte(f, r->is_masked);
2422 qemu_put_byte(f, r->is_pending);
2423 qemu_put_byte(f, r->is_asserted);
2424 }
2425
2426 const VMStateInfo int_state_info = {
2427 .name = "int_state",
2428 .get = vmxnet3_get_int_state,
2429 .put = vmxnet3_put_int_state
2430 };
2431
2432 static const VMStateDescription vmstate_vmxnet3 = {
2433 .name = "vmxnet3",
2434 .version_id = 1,
2435 .minimum_version_id = 1,
2436 .minimum_version_id_old = 1,
2437 .pre_save = vmxnet3_pre_save,
2438 .post_load = vmxnet3_post_load,
2439 .fields = (VMStateField[]) {
2440 VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
2441 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2442 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2443 VMSTATE_BOOL(lro_supported, VMXNET3State),
2444 VMSTATE_UINT32(rx_mode, VMXNET3State),
2445 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2446 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2447 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2448 VMSTATE_UINT32(mtu, VMXNET3State),
2449 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2450 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2451 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2452 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2453 VMSTATE_UINT8(txq_num, VMXNET3State),
2454 VMSTATE_UINT8(rxq_num, VMXNET3State),
2455 VMSTATE_UINT32(device_active, VMXNET3State),
2456 VMSTATE_UINT32(last_command, VMXNET3State),
2457 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2458 VMSTATE_UINT32(temp_mac, VMXNET3State),
2459 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2460 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2461
2462 VMSTATE_ARRAY(txq_descr, VMXNET3State,
2463 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, txq_descr_info,
2464 Vmxnet3TxqDescr),
2465 VMSTATE_ARRAY(rxq_descr, VMXNET3State,
2466 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, rxq_descr_info,
2467 Vmxnet3RxqDescr),
2468 VMSTATE_ARRAY(interrupt_states, VMXNET3State, VMXNET3_MAX_INTRS,
2469 0, int_state_info, Vmxnet3IntState),
2470
2471 VMSTATE_END_OF_LIST()
2472 },
2473 .subsections = (VMStateSubsection[]) {
2474 {
2475 .vmsd = &vmxstate_vmxnet3_mcast_list,
2476 .needed = vmxnet3_mc_list_needed
2477 },
2478 {
2479 /* empty element. */
2480 }
2481 }
2482 };
2483
2484 static void
2485 vmxnet3_write_config(PCIDevice *pci_dev, uint32_t addr, uint32_t val, int len)
2486 {
2487 pci_default_write_config(pci_dev, addr, val, len);
2488 msix_write_config(pci_dev, addr, val, len);
2489 msi_write_config(pci_dev, addr, val, len);
2490 }
2491
2492 static Property vmxnet3_properties[] = {
2493 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2494 DEFINE_PROP_END_OF_LIST(),
2495 };
2496
2497 static void vmxnet3_class_init(ObjectClass *class, void *data)
2498 {
2499 DeviceClass *dc = DEVICE_CLASS(class);
2500 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2501
2502 c->init = vmxnet3_pci_init;
2503 c->exit = vmxnet3_pci_uninit;
2504 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2505 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2506 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2507 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2508 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2509 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2510 c->config_write = vmxnet3_write_config,
2511 dc->desc = "VMWare Paravirtualized Ethernet v3";
2512 dc->reset = vmxnet3_qdev_reset;
2513 dc->vmsd = &vmstate_vmxnet3;
2514 dc->props = vmxnet3_properties;
2515 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2516 }
2517
2518 static const TypeInfo vmxnet3_info = {
2519 .name = TYPE_VMXNET3,
2520 .parent = TYPE_PCI_DEVICE,
2521 .instance_size = sizeof(VMXNET3State),
2522 .class_init = vmxnet3_class_init,
2523 };
2524
2525 static void vmxnet3_register_types(void)
2526 {
2527 VMW_CBPRN("vmxnet3_register_types called...");
2528 type_register_static(&vmxnet3_info);
2529 }
2530
2531 type_init(vmxnet3_register_types)