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net: rtl8139: do not use old_mmio accesses
[qemu/kevin.git] / hw / net / vmxnet3.c
bloba19a7a31dd1680d5090a34908caac0dc8dac6537
1 /*
2 * QEMU VMWARE VMXNET3 paravirtual NIC
3 *
4 * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
5 *
6 * Developed by Daynix Computing LTD (http://www.daynix.com)
7 *
8 * Authors:
9 * Dmitry Fleytman <dmitry@daynix.com>
10 * Tamir Shomer <tamirs@daynix.com>
11 * Yan Vugenfirer <yan@daynix.com>
12 *
13 * This work is licensed under the terms of the GNU GPL, version 2.
14 * See the COPYING file in the top-level directory.
15 *
16 */
17
18 #include "qemu/osdep.h"
19 #include "hw/hw.h"
20 #include "hw/pci/pci.h"
21 #include "net/net.h"
22 #include "net/tap.h"
23 #include "net/checksum.h"
24 #include "sysemu/sysemu.h"
25 #include "qemu-common.h"
26 #include "qemu/bswap.h"
27 #include "hw/pci/msix.h"
28 #include "hw/pci/msi.h"
29 #include "migration/register.h"
30
31 #include "vmxnet3.h"
32 #include "vmxnet_debug.h"
33 #include "vmware_utils.h"
34 #include "net_tx_pkt.h"
35 #include "net_rx_pkt.h"
36
37 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
38 #define VMXNET3_MSIX_BAR_SIZE 0x2000
39 #define MIN_BUF_SIZE 60
40
41 /* Compatibility flags for migration */
42 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
43 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
44 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
45 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
46 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
47 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
48
49 #define VMXNET3_EXP_EP_OFFSET (0x48)
50 #define VMXNET3_MSI_OFFSET(s) \
51 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
52 #define VMXNET3_MSIX_OFFSET(s) \
53 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
54 #define VMXNET3_DSN_OFFSET (0x100)
55
56 #define VMXNET3_BAR0_IDX (0)
57 #define VMXNET3_BAR1_IDX (1)
58 #define VMXNET3_MSIX_BAR_IDX (2)
59
60 #define VMXNET3_OFF_MSIX_TABLE (0x000)
61 #define VMXNET3_OFF_MSIX_PBA(s) \
62 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
63
64 /* Link speed in Mbps should be shifted by 16 */
65 #define VMXNET3_LINK_SPEED (1000 << 16)
66
67 /* Link status: 1 - up, 0 - down. */
68 #define VMXNET3_LINK_STATUS_UP 0x1
69
70 /* Least significant bit should be set for revision and version */
71 #define VMXNET3_UPT_REVISION 0x1
72 #define VMXNET3_DEVICE_REVISION 0x1
73
74 /* Number of interrupt vectors for non-MSIx modes */
75 #define VMXNET3_MAX_NMSIX_INTRS (1)
76
77 /* Macros for rings descriptors access */
78 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
79 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
80
81 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
82 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
83
84 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
85 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
86
87 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
88 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
89
90 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
91 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
92
93 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
94 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
95
96 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
97 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
98
99 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
100 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
101
102 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
103 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
104
105 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
106 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
107
108 /* Macros for guest driver shared area access */
109 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
110 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
111
112 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
113 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
114
115 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
116 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
117
118 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
119 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
120
121 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
122 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
123
124 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
125 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
126
127 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
128
129 typedef struct VMXNET3Class {
130 PCIDeviceClass parent_class;
131 DeviceRealize parent_dc_realize;
132 } VMXNET3Class;
133
134 #define TYPE_VMXNET3 "vmxnet3"
135 #define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
136
137 #define VMXNET3_DEVICE_CLASS(klass) \
138 OBJECT_CLASS_CHECK(VMXNET3Class, (klass), TYPE_VMXNET3)
139 #define VMXNET3_DEVICE_GET_CLASS(obj) \
140 OBJECT_GET_CLASS(VMXNET3Class, (obj), TYPE_VMXNET3)
141
142 /* Cyclic ring abstraction */
143 typedef struct {
144 hwaddr pa;
145 uint32_t size;
146 uint32_t cell_size;
147 uint32_t next;
148 uint8_t gen;
149 } Vmxnet3Ring;
150
151 static inline void vmxnet3_ring_init(PCIDevice *d,
152 Vmxnet3Ring *ring,
153 hwaddr pa,
154 uint32_t size,
155 uint32_t cell_size,
156 bool zero_region)
157 {
158 ring->pa = pa;
159 ring->size = size;
160 ring->cell_size = cell_size;
161 ring->gen = VMXNET3_INIT_GEN;
162 ring->next = 0;
163
164 if (zero_region) {
165 vmw_shmem_set(d, pa, 0, size * cell_size);
166 }
167 }
168
169 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
170 macro("%s#%d: base %" PRIx64 " size %u cell_size %u gen %d next %u", \
171 (ring_name), (ridx), \
172 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
173
174 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
175 {
176 if (++ring->next >= ring->size) {
177 ring->next = 0;
178 ring->gen ^= 1;
179 }
180 }
181
182 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
183 {
184 if (ring->next-- == 0) {
185 ring->next = ring->size - 1;
186 ring->gen ^= 1;
187 }
188 }
189
190 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
191 {
192 return ring->pa + ring->next * ring->cell_size;
193 }
194
195 static inline void vmxnet3_ring_read_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
196 void *buff)
197 {
198 vmw_shmem_read(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
199 }
200
201 static inline void vmxnet3_ring_write_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
202 void *buff)
203 {
204 vmw_shmem_write(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
205 }
206
207 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
208 {
209 return ring->next;
210 }
211
212 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
213 {
214 return ring->gen;
215 }
216
217 /* Debug trace-related functions */
218 static inline void
219 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
220 {
221 VMW_PKPRN("TX DESCR: "
222 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
223 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
224 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
225 le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
226 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
227 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
228 }
229
230 static inline void
231 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
232 {
233 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
234 "csum_start: %d, csum_offset: %d",
235 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
236 vhdr->csum_start, vhdr->csum_offset);
237 }
238
239 static inline void
240 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
241 {
242 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
243 "dtype: %d, ext1: %d, btype: %d",
244 le64_to_cpu(descr->addr), descr->len, descr->gen,
245 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
246 }
247
248 /* Device state and helper functions */
249 #define VMXNET3_RX_RINGS_PER_QUEUE (2)
250
251 typedef struct {
252 Vmxnet3Ring tx_ring;
253 Vmxnet3Ring comp_ring;
254
255 uint8_t intr_idx;
256 hwaddr tx_stats_pa;
257 struct UPT1_TxStats txq_stats;
258 } Vmxnet3TxqDescr;
259
260 typedef struct {
261 Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
262 Vmxnet3Ring comp_ring;
263 uint8_t intr_idx;
264 hwaddr rx_stats_pa;
265 struct UPT1_RxStats rxq_stats;
266 } Vmxnet3RxqDescr;
267
268 typedef struct {
269 bool is_masked;
270 bool is_pending;
271 bool is_asserted;
272 } Vmxnet3IntState;
273
274 typedef struct {
275 PCIDevice parent_obj;
276 NICState *nic;
277 NICConf conf;
278 MemoryRegion bar0;
279 MemoryRegion bar1;
280 MemoryRegion msix_bar;
281
282 Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
283 Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
284
285 /* Whether MSI-X support was installed successfully */
286 bool msix_used;
287 hwaddr drv_shmem;
288 hwaddr temp_shared_guest_driver_memory;
289
290 uint8_t txq_num;
291
292 /* This boolean tells whether RX packet being indicated has to */
293 /* be split into head and body chunks from different RX rings */
294 bool rx_packets_compound;
295
296 bool rx_vlan_stripping;
297 bool lro_supported;
298
299 uint8_t rxq_num;
300
301 /* Network MTU */
302 uint32_t mtu;
303
304 /* Maximum number of fragments for indicated TX packets */
305 uint32_t max_tx_frags;
306
307 /* Maximum number of fragments for indicated RX packets */
308 uint16_t max_rx_frags;
309
310 /* Index for events interrupt */
311 uint8_t event_int_idx;
312
313 /* Whether automatic interrupts masking enabled */
314 bool auto_int_masking;
315
316 bool peer_has_vhdr;
317
318 /* TX packets to QEMU interface */
319 struct NetTxPkt *tx_pkt;
320 uint32_t offload_mode;
321 uint32_t cso_or_gso_size;
322 uint16_t tci;
323 bool needs_vlan;
324
325 struct NetRxPkt *rx_pkt;
326
327 bool tx_sop;
328 bool skip_current_tx_pkt;
329
330 uint32_t device_active;
331 uint32_t last_command;
332
333 uint32_t link_status_and_speed;
334
335 Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
336
337 uint32_t temp_mac; /* To store the low part first */
338
339 MACAddr perm_mac;
340 uint32_t vlan_table[VMXNET3_VFT_SIZE];
341 uint32_t rx_mode;
342 MACAddr *mcast_list;
343 uint32_t mcast_list_len;
344 uint32_t mcast_list_buff_size; /* needed for live migration. */
345
346 /* Compatibility flags for migration */
347 uint32_t compat_flags;
348 } VMXNET3State;
349
350 /* Interrupt management */
351
352 /*
353 * This function returns sign whether interrupt line is in asserted state
354 * This depends on the type of interrupt used. For INTX interrupt line will
355 * be asserted until explicit deassertion, for MSI(X) interrupt line will
356 * be deasserted automatically due to notification semantics of the MSI(X)
357 * interrupts
358 */
359 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
360 {
361 PCIDevice *d = PCI_DEVICE(s);
362
363 if (s->msix_used && msix_enabled(d)) {
364 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
365 msix_notify(d, int_idx);
366 return false;
367 }
368 if (msi_enabled(d)) {
369 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
370 msi_notify(d, int_idx);
371 return false;
372 }
373
374 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
375 pci_irq_assert(d);
376 return true;
377 }
378
379 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
380 {
381 PCIDevice *d = PCI_DEVICE(s);
382
383 /*
384 * This function should never be called for MSI(X) interrupts
385 * because deassertion never required for message interrupts
386 */
387 assert(!s->msix_used || !msix_enabled(d));
388 /*
389 * This function should never be called for MSI(X) interrupts
390 * because deassertion never required for message interrupts
391 */
392 assert(!msi_enabled(d));
393
394 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
395 pci_irq_deassert(d);
396 }
397
398 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
399 {
400 if (!s->interrupt_states[lidx].is_pending &&
401 s->interrupt_states[lidx].is_asserted) {
402 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
403 _vmxnet3_deassert_interrupt_line(s, lidx);
404 s->interrupt_states[lidx].is_asserted = false;
405 return;
406 }
407
408 if (s->interrupt_states[lidx].is_pending &&
409 !s->interrupt_states[lidx].is_masked &&
410 !s->interrupt_states[lidx].is_asserted) {
411 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
412 s->interrupt_states[lidx].is_asserted =
413 _vmxnet3_assert_interrupt_line(s, lidx);
414 s->interrupt_states[lidx].is_pending = false;
415 return;
416 }
417 }
418
419 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
420 {
421 PCIDevice *d = PCI_DEVICE(s);
422 s->interrupt_states[lidx].is_pending = true;
423 vmxnet3_update_interrupt_line_state(s, lidx);
424
425 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
426 goto do_automask;
427 }
428
429 if (msi_enabled(d) && s->auto_int_masking) {
430 goto do_automask;
431 }
432
433 return;
434
435 do_automask:
436 s->interrupt_states[lidx].is_masked = true;
437 vmxnet3_update_interrupt_line_state(s, lidx);
438 }
439
440 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
441 {
442 return s->interrupt_states[lidx].is_asserted;
443 }
444
445 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
446 {
447 s->interrupt_states[int_idx].is_pending = false;
448 if (s->auto_int_masking) {
449 s->interrupt_states[int_idx].is_masked = true;
450 }
451 vmxnet3_update_interrupt_line_state(s, int_idx);
452 }
453
454 static void
455 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
456 {
457 s->interrupt_states[lidx].is_masked = is_masked;
458 vmxnet3_update_interrupt_line_state(s, lidx);
459 }
460
461 static bool vmxnet3_verify_driver_magic(PCIDevice *d, hwaddr dshmem)
462 {
463 return (VMXNET3_READ_DRV_SHARED32(d, dshmem, magic) == VMXNET3_REV1_MAGIC);
464 }
465
466 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
467 #define VMXNET3_MAKE_BYTE(byte_num, val) \
468 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
469
470 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
471 {
472 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
473 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
474 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
475 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
476 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
477 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
478
479 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
480
481 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
482 }
483
484 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
485 {
486 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
487 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
488 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
489 VMXNET3_MAKE_BYTE(3, addr->a[3]);
490 }
491
492 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
493 {
494 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
495 VMXNET3_MAKE_BYTE(1, addr->a[5]);
496 }
497
498 static void
499 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
500 {
501 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
502 }
503
504 static inline void
505 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
506 {
507 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
508 }
509
510 static inline void
511 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
512 {
513 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
514 }
515
516 static void
517 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
518 {
519 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
520 }
521
522 static void
523 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
524 {
525 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
526 }
527
528 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
529 {
530 struct Vmxnet3_TxCompDesc txcq_descr;
531 PCIDevice *d = PCI_DEVICE(s);
532
533 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
534
535 memset(&txcq_descr, 0, sizeof(txcq_descr));
536 txcq_descr.txdIdx = tx_ridx;
537 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
538
539 vmxnet3_ring_write_curr_cell(d, &s->txq_descr[qidx].comp_ring, &txcq_descr);
540
541 /* Flush changes in TX descriptor before changing the counter value */
542 smp_wmb();
543
544 vmxnet3_inc_tx_completion_counter(s, qidx);
545 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
546 }
547
548 static bool
549 vmxnet3_setup_tx_offloads(VMXNET3State *s)
550 {
551 switch (s->offload_mode) {
552 case VMXNET3_OM_NONE:
553 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
554 break;
555
556 case VMXNET3_OM_CSUM:
557 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
558 VMW_PKPRN("L4 CSO requested\n");
559 break;
560
561 case VMXNET3_OM_TSO:
562 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
563 s->cso_or_gso_size);
564 net_tx_pkt_update_ip_checksums(s->tx_pkt);
565 VMW_PKPRN("GSO offload requested.");
566 break;
567
568 default:
569 g_assert_not_reached();
570 return false;
571 }
572
573 return true;
574 }
575
576 static void
577 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
578 const struct Vmxnet3_TxDesc *txd)
579 {
580 s->offload_mode = txd->om;
581 s->cso_or_gso_size = txd->msscof;
582 s->tci = txd->tci;
583 s->needs_vlan = txd->ti;
584 }
585
586 typedef enum {
587 VMXNET3_PKT_STATUS_OK,
588 VMXNET3_PKT_STATUS_ERROR,
589 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
590 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
591 } Vmxnet3PktStatus;
592
593 static void
594 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
595 Vmxnet3PktStatus status)
596 {
597 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
598 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
599
600 switch (status) {
601 case VMXNET3_PKT_STATUS_OK:
602 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
603 case ETH_PKT_BCAST:
604 stats->bcastPktsTxOK++;
605 stats->bcastBytesTxOK += tot_len;
606 break;
607 case ETH_PKT_MCAST:
608 stats->mcastPktsTxOK++;
609 stats->mcastBytesTxOK += tot_len;
610 break;
611 case ETH_PKT_UCAST:
612 stats->ucastPktsTxOK++;
613 stats->ucastBytesTxOK += tot_len;
614 break;
615 default:
616 g_assert_not_reached();
617 }
618
619 if (s->offload_mode == VMXNET3_OM_TSO) {
620 /*
621 * According to VMWARE headers this statistic is a number
622 * of packets after segmentation but since we don't have
623 * this information in QEMU model, the best we can do is to
624 * provide number of non-segmented packets
625 */
626 stats->TSOPktsTxOK++;
627 stats->TSOBytesTxOK += tot_len;
628 }
629 break;
630
631 case VMXNET3_PKT_STATUS_DISCARD:
632 stats->pktsTxDiscard++;
633 break;
634
635 case VMXNET3_PKT_STATUS_ERROR:
636 stats->pktsTxError++;
637 break;
638
639 default:
640 g_assert_not_reached();
641 }
642 }
643
644 static void
645 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
646 int qidx,
647 Vmxnet3PktStatus status)
648 {
649 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
650 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
651
652 switch (status) {
653 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
654 stats->pktsRxOutOfBuf++;
655 break;
656
657 case VMXNET3_PKT_STATUS_ERROR:
658 stats->pktsRxError++;
659 break;
660 case VMXNET3_PKT_STATUS_OK:
661 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
662 case ETH_PKT_BCAST:
663 stats->bcastPktsRxOK++;
664 stats->bcastBytesRxOK += tot_len;
665 break;
666 case ETH_PKT_MCAST:
667 stats->mcastPktsRxOK++;
668 stats->mcastBytesRxOK += tot_len;
669 break;
670 case ETH_PKT_UCAST:
671 stats->ucastPktsRxOK++;
672 stats->ucastBytesRxOK += tot_len;
673 break;
674 default:
675 g_assert_not_reached();
676 }
677
678 if (tot_len > s->mtu) {
679 stats->LROPktsRxOK++;
680 stats->LROBytesRxOK += tot_len;
681 }
682 break;
683 default:
684 g_assert_not_reached();
685 }
686 }
687
688 static inline bool
689 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
690 int qidx,
691 struct Vmxnet3_TxDesc *txd,
692 uint32_t *descr_idx)
693 {
694 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
695 PCIDevice *d = PCI_DEVICE(s);
696
697 vmxnet3_ring_read_curr_cell(d, ring, txd);
698 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
699 /* Only read after generation field verification */
700 smp_rmb();
701 /* Re-read to be sure we got the latest version */
702 vmxnet3_ring_read_curr_cell(d, ring, txd);
703 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
704 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
705 vmxnet3_inc_tx_consumption_counter(s, qidx);
706 return true;
707 }
708
709 return false;
710 }
711
712 static bool
713 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
714 {
715 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
716
717 if (!vmxnet3_setup_tx_offloads(s)) {
718 status = VMXNET3_PKT_STATUS_ERROR;
719 goto func_exit;
720 }
721
722 /* debug prints */
723 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
724 net_tx_pkt_dump(s->tx_pkt);
725
726 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
727 status = VMXNET3_PKT_STATUS_DISCARD;
728 goto func_exit;
729 }
730
731 func_exit:
732 vmxnet3_on_tx_done_update_stats(s, qidx, status);
733 return (status == VMXNET3_PKT_STATUS_OK);
734 }
735
736 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
737 {
738 struct Vmxnet3_TxDesc txd;
739 uint32_t txd_idx;
740 uint32_t data_len;
741 hwaddr data_pa;
742
743 for (;;) {
744 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
745 break;
746 }
747
748 vmxnet3_dump_tx_descr(&txd);
749
750 if (!s->skip_current_tx_pkt) {
751 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
752 data_pa = le64_to_cpu(txd.addr);
753
754 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
755 data_pa,
756 data_len)) {
757 s->skip_current_tx_pkt = true;
758 }
759 }
760
761 if (s->tx_sop) {
762 vmxnet3_tx_retrieve_metadata(s, &txd);
763 s->tx_sop = false;
764 }
765
766 if (txd.eop) {
767 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
768 if (s->needs_vlan) {
769 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
770 }
771
772 vmxnet3_send_packet(s, qidx);
773 } else {
774 vmxnet3_on_tx_done_update_stats(s, qidx,
775 VMXNET3_PKT_STATUS_ERROR);
776 }
777
778 vmxnet3_complete_packet(s, qidx, txd_idx);
779 s->tx_sop = true;
780 s->skip_current_tx_pkt = false;
781 net_tx_pkt_reset(s->tx_pkt);
782 }
783 }
784 }
785
786 static inline void
787 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
788 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
789 {
790 PCIDevice *d = PCI_DEVICE(s);
791
792 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
793 *didx = vmxnet3_ring_curr_cell_idx(ring);
794 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
795 }
796
797 static inline uint8_t
798 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
799 {
800 return s->rxq_descr[qidx].rx_ring[ridx].gen;
801 }
802
803 static inline hwaddr
804 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
805 {
806 uint8_t ring_gen;
807 struct Vmxnet3_RxCompDesc rxcd;
808
809 hwaddr daddr =
810 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
811
812 pci_dma_read(PCI_DEVICE(s),
813 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
814 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
815
816 if (rxcd.gen != ring_gen) {
817 *descr_gen = ring_gen;
818 vmxnet3_inc_rx_completion_counter(s, qidx);
819 return daddr;
820 }
821
822 return 0;
823 }
824
825 static inline void
826 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
827 {
828 vmxnet3_dec_rx_completion_counter(s, qidx);
829 }
830
831 #define RXQ_IDX (0)
832 #define RX_HEAD_BODY_RING (0)
833 #define RX_BODY_ONLY_RING (1)
834
835 static bool
836 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
837 struct Vmxnet3_RxDesc *descr_buf,
838 uint32_t *descr_idx,
839 uint32_t *ridx)
840 {
841 for (;;) {
842 uint32_t ring_gen;
843 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
844 descr_buf, descr_idx);
845
846 /* If no more free descriptors - return */
847 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
848 if (descr_buf->gen != ring_gen) {
849 return false;
850 }
851
852 /* Only read after generation field verification */
853 smp_rmb();
854 /* Re-read to be sure we got the latest version */
855 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
856 descr_buf, descr_idx);
857
858 /* Mark current descriptor as used/skipped */
859 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
860
861 /* If this is what we are looking for - return */
862 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
863 *ridx = RX_HEAD_BODY_RING;
864 return true;
865 }
866 }
867 }
868
869 static bool
870 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
871 struct Vmxnet3_RxDesc *d,
872 uint32_t *didx,
873 uint32_t *ridx)
874 {
875 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
876
877 /* Try to find corresponding descriptor in head/body ring */
878 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
879 /* Only read after generation field verification */
880 smp_rmb();
881 /* Re-read to be sure we got the latest version */
882 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
883 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
884 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
885 *ridx = RX_HEAD_BODY_RING;
886 return true;
887 }
888 }
889
890 /*
891 * If there is no free descriptors on head/body ring or next free
892 * descriptor is a head descriptor switch to body only ring
893 */
894 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
895
896 /* If no more free descriptors - return */
897 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
898 /* Only read after generation field verification */
899 smp_rmb();
900 /* Re-read to be sure we got the latest version */
901 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
902 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
903 *ridx = RX_BODY_ONLY_RING;
904 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
905 return true;
906 }
907
908 return false;
909 }
910
911 static inline bool
912 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
913 struct Vmxnet3_RxDesc *descr_buf,
914 uint32_t *descr_idx,
915 uint32_t *ridx)
916 {
917 if (is_head || !s->rx_packets_compound) {
918 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
919 } else {
920 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
921 }
922 }
923
924 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
925 * the implementation always passes an RxCompDesc with a "Checksum
926 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
927 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
928 *
929 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
930 * and place a fully computed checksum into the tcp/udp header.
931 * Otherwise, the OS driver will receive a checksum-correct indication
932 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
933 * having just the pseudo header csum value.
934 *
935 * While this is not a problem if packet is destined for local delivery,
936 * in the case the host OS performs forwarding, it will forward an
937 * incorrectly checksummed packet.
938 */
939 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
940 const void *pkt_data,
941 size_t pkt_len)
942 {
943 struct virtio_net_hdr *vhdr;
944 bool isip4, isip6, istcp, isudp;
945 uint8_t *data;
946 int len;
947
948 if (!net_rx_pkt_has_virt_hdr(pkt)) {
949 return;
950 }
951
952 vhdr = net_rx_pkt_get_vhdr(pkt);
953 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
954 return;
955 }
956
957 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
958 if (!(isip4 || isip6) || !(istcp || isudp)) {
959 return;
960 }
961
962 vmxnet3_dump_virt_hdr(vhdr);
963
964 /* Validate packet len: csum_start + scum_offset + length of csum field */
965 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
966 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
967 "cannot calculate checksum",
968 pkt_len, vhdr->csum_start, vhdr->csum_offset);
969 return;
970 }
971
972 data = (uint8_t *)pkt_data + vhdr->csum_start;
973 len = pkt_len - vhdr->csum_start;
974 /* Put the checksum obtained into the packet */
975 stw_be_p(data + vhdr->csum_offset, net_raw_checksum(data, len));
976
977 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
978 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
979 }
980
981 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
982 struct Vmxnet3_RxCompDesc *rxcd)
983 {
984 int csum_ok, is_gso;
985 bool isip4, isip6, istcp, isudp;
986 struct virtio_net_hdr *vhdr;
987 uint8_t offload_type;
988
989 if (net_rx_pkt_is_vlan_stripped(pkt)) {
990 rxcd->ts = 1;
991 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
992 }
993
994 if (!net_rx_pkt_has_virt_hdr(pkt)) {
995 goto nocsum;
996 }
997
998 vhdr = net_rx_pkt_get_vhdr(pkt);
999 /*
1000 * Checksum is valid when lower level tell so or when lower level
1001 * requires checksum offload telling that packet produced/bridged
1002 * locally and did travel over network after last checksum calculation
1003 * or production
1004 */
1005 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
1006 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
1007
1008 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
1009 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
1010
1011 if (!csum_ok && !is_gso) {
1012 goto nocsum;
1013 }
1014
1015 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
1016 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
1017 goto nocsum;
1018 }
1019
1020 rxcd->cnc = 0;
1021 rxcd->v4 = isip4 ? 1 : 0;
1022 rxcd->v6 = isip6 ? 1 : 0;
1023 rxcd->tcp = istcp ? 1 : 0;
1024 rxcd->udp = isudp ? 1 : 0;
1025 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
1026 return;
1027
1028 nocsum:
1029 rxcd->cnc = 1;
1030 return;
1031 }
1032
1033 static void
1034 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
1035 const struct iovec *iov,
1036 size_t start_iov_off,
1037 hwaddr target_addr,
1038 size_t bytes_to_copy)
1039 {
1040 size_t curr_off = 0;
1041 size_t copied = 0;
1042
1043 while (bytes_to_copy) {
1044 if (start_iov_off < (curr_off + iov->iov_len)) {
1045 size_t chunk_len =
1046 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
1047
1048 pci_dma_write(pci_dev, target_addr + copied,
1049 iov->iov_base + start_iov_off - curr_off,
1050 chunk_len);
1051
1052 copied += chunk_len;
1053 start_iov_off += chunk_len;
1054 curr_off = start_iov_off;
1055 bytes_to_copy -= chunk_len;
1056 } else {
1057 curr_off += iov->iov_len;
1058 }
1059 iov++;
1060 }
1061 }
1062
1063 static bool
1064 vmxnet3_indicate_packet(VMXNET3State *s)
1065 {
1066 struct Vmxnet3_RxDesc rxd;
1067 PCIDevice *d = PCI_DEVICE(s);
1068 bool is_head = true;
1069 uint32_t rxd_idx;
1070 uint32_t rx_ridx = 0;
1071
1072 struct Vmxnet3_RxCompDesc rxcd;
1073 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
1074 hwaddr new_rxcd_pa = 0;
1075 hwaddr ready_rxcd_pa = 0;
1076 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
1077 size_t bytes_copied = 0;
1078 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
1079 uint16_t num_frags = 0;
1080 size_t chunk_size;
1081
1082 net_rx_pkt_dump(s->rx_pkt);
1083
1084 while (bytes_left > 0) {
1085
1086 /* cannot add more frags to packet */
1087 if (num_frags == s->max_rx_frags) {
1088 break;
1089 }
1090
1091 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1092 if (!new_rxcd_pa) {
1093 break;
1094 }
1095
1096 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1097 break;
1098 }
1099
1100 chunk_size = MIN(bytes_left, rxd.len);
1101 vmxnet3_pci_dma_writev(d, data, bytes_copied,
1102 le64_to_cpu(rxd.addr), chunk_size);
1103 bytes_copied += chunk_size;
1104 bytes_left -= chunk_size;
1105
1106 vmxnet3_dump_rx_descr(&rxd);
1107
1108 if (ready_rxcd_pa != 0) {
1109 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1110 }
1111
1112 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1113 rxcd.rxdIdx = rxd_idx;
1114 rxcd.len = chunk_size;
1115 rxcd.sop = is_head;
1116 rxcd.gen = new_rxcd_gen;
1117 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1118
1119 if (bytes_left == 0) {
1120 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1121 }
1122
1123 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1124 "sop %d csum_correct %lu",
1125 (unsigned long) rx_ridx,
1126 (unsigned long) rxcd.rxdIdx,
1127 (unsigned long) rxcd.len,
1128 (int) rxcd.sop,
1129 (unsigned long) rxcd.tuc);
1130
1131 is_head = false;
1132 ready_rxcd_pa = new_rxcd_pa;
1133 new_rxcd_pa = 0;
1134 num_frags++;
1135 }
1136
1137 if (ready_rxcd_pa != 0) {
1138 rxcd.eop = 1;
1139 rxcd.err = (bytes_left != 0);
1140
1141 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1142
1143 /* Flush RX descriptor changes */
1144 smp_wmb();
1145 }
1146
1147 if (new_rxcd_pa != 0) {
1148 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1149 }
1150
1151 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1152
1153 if (bytes_left == 0) {
1154 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1155 return true;
1156 } else if (num_frags == s->max_rx_frags) {
1157 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1158 return false;
1159 } else {
1160 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1161 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1162 return false;
1163 }
1164 }
1165
1166 static void
1167 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1168 uint64_t val, unsigned size)
1169 {
1170 VMXNET3State *s = opaque;
1171
1172 if (!s->device_active) {
1173 return;
1174 }
1175
1176 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1177 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1178 int tx_queue_idx =
1179 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1180 VMXNET3_REG_ALIGN);
1181 assert(tx_queue_idx <= s->txq_num);
1182 vmxnet3_process_tx_queue(s, tx_queue_idx);
1183 return;
1184 }
1185
1186 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1187 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1188 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1189 VMXNET3_REG_ALIGN);
1190
1191 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1192
1193 vmxnet3_on_interrupt_mask_changed(s, l, val);
1194 return;
1195 }
1196
1197 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1198 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1199 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1200 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1201 return;
1202 }
1203
1204 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1205 (uint64_t) addr, val, size);
1206 }
1207
1208 static uint64_t
1209 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1210 {
1211 VMXNET3State *s = opaque;
1212
1213 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1214 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1215 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1216 VMXNET3_REG_ALIGN);
1217 return s->interrupt_states[l].is_masked;
1218 }
1219
1220 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1221 return 0;
1222 }
1223
1224 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1225 {
1226 int i;
1227 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1228 s->interrupt_states[i].is_asserted = false;
1229 s->interrupt_states[i].is_pending = false;
1230 s->interrupt_states[i].is_masked = true;
1231 }
1232 }
1233
1234 static void vmxnet3_reset_mac(VMXNET3State *s)
1235 {
1236 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1237 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1238 }
1239
1240 static void vmxnet3_deactivate_device(VMXNET3State *s)
1241 {
1242 if (s->device_active) {
1243 VMW_CBPRN("Deactivating vmxnet3...");
1244 net_tx_pkt_reset(s->tx_pkt);
1245 net_tx_pkt_uninit(s->tx_pkt);
1246 net_rx_pkt_uninit(s->rx_pkt);
1247 s->device_active = false;
1248 }
1249 }
1250
1251 static void vmxnet3_reset(VMXNET3State *s)
1252 {
1253 VMW_CBPRN("Resetting vmxnet3...");
1254
1255 vmxnet3_deactivate_device(s);
1256 vmxnet3_reset_interrupt_states(s);
1257 s->drv_shmem = 0;
1258 s->tx_sop = true;
1259 s->skip_current_tx_pkt = false;
1260 }
1261
1262 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1263 {
1264 PCIDevice *d = PCI_DEVICE(s);
1265
1266 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1267 devRead.rxFilterConf.rxMode);
1268 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1269 }
1270
1271 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1272 {
1273 int i;
1274 PCIDevice *d = PCI_DEVICE(s);
1275
1276 /* Copy configuration from shared memory */
1277 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1278 devRead.rxFilterConf.vfTable,
1279 s->vlan_table,
1280 sizeof(s->vlan_table));
1281
1282 /* Invert byte order when needed */
1283 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1284 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1285 }
1286
1287 /* Dump configuration for debugging purposes */
1288 VMW_CFPRN("Configured VLANs:");
1289 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1290 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1291 VMW_CFPRN("\tVLAN %d is present", i);
1292 }
1293 }
1294 }
1295
1296 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1297 {
1298 PCIDevice *d = PCI_DEVICE(s);
1299
1300 uint16_t list_bytes =
1301 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1302 devRead.rxFilterConf.mfTableLen);
1303
1304 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1305
1306 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1307 if (!s->mcast_list) {
1308 if (s->mcast_list_len == 0) {
1309 VMW_CFPRN("Current multicast list is empty");
1310 } else {
1311 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1312 s->mcast_list_len);
1313 }
1314 s->mcast_list_len = 0;
1315 } else {
1316 int i;
1317 hwaddr mcast_list_pa =
1318 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1319 devRead.rxFilterConf.mfTablePA);
1320
1321 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1322
1323 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1324 for (i = 0; i < s->mcast_list_len; i++) {
1325 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1326 }
1327 }
1328 }
1329
1330 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1331 {
1332 vmxnet3_update_rx_mode(s);
1333 vmxnet3_update_vlan_filters(s);
1334 vmxnet3_update_mcast_filters(s);
1335 }
1336
1337 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1338 {
1339 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1340 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1341 return interrupt_mode;
1342 }
1343
1344 static void vmxnet3_fill_stats(VMXNET3State *s)
1345 {
1346 int i;
1347 PCIDevice *d = PCI_DEVICE(s);
1348
1349 if (!s->device_active)
1350 return;
1351
1352 for (i = 0; i < s->txq_num; i++) {
1353 pci_dma_write(d,
1354 s->txq_descr[i].tx_stats_pa,
1355 &s->txq_descr[i].txq_stats,
1356 sizeof(s->txq_descr[i].txq_stats));
1357 }
1358
1359 for (i = 0; i < s->rxq_num; i++) {
1360 pci_dma_write(d,
1361 s->rxq_descr[i].rx_stats_pa,
1362 &s->rxq_descr[i].rxq_stats,
1363 sizeof(s->rxq_descr[i].rxq_stats));
1364 }
1365 }
1366
1367 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1368 {
1369 struct Vmxnet3_GOSInfo gos;
1370 PCIDevice *d = PCI_DEVICE(s);
1371
1372 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1373 &gos, sizeof(gos));
1374 s->rx_packets_compound =
1375 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1376
1377 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1378 }
1379
1380 static void
1381 vmxnet3_dump_conf_descr(const char *name,
1382 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1383 {
1384 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1385 name, pm_descr->confVer, pm_descr->confLen);
1386
1387 };
1388
1389 static void vmxnet3_update_pm_state(VMXNET3State *s)
1390 {
1391 struct Vmxnet3_VariableLenConfDesc pm_descr;
1392 PCIDevice *d = PCI_DEVICE(s);
1393
1394 pm_descr.confLen =
1395 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1396 pm_descr.confVer =
1397 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1398 pm_descr.confPA =
1399 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1400
1401 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1402 }
1403
1404 static void vmxnet3_update_features(VMXNET3State *s)
1405 {
1406 uint32_t guest_features;
1407 int rxcso_supported;
1408 PCIDevice *d = PCI_DEVICE(s);
1409
1410 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1411 devRead.misc.uptFeatures);
1412
1413 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1414 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1415 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1416
1417 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1418 s->lro_supported, rxcso_supported,
1419 s->rx_vlan_stripping);
1420 if (s->peer_has_vhdr) {
1421 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1422 rxcso_supported,
1423 s->lro_supported,
1424 s->lro_supported,
1425 0,
1426 0);
1427 }
1428 }
1429
1430 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1431 {
1432 return s->msix_used || msi_enabled(PCI_DEVICE(s))
1433 || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1;
1434 }
1435
1436 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1437 {
1438 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1439 if (idx >= max_ints) {
1440 hw_error("Bad interrupt index: %d\n", idx);
1441 }
1442 }
1443
1444 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1445 {
1446 int i;
1447
1448 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1449 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1450
1451 for (i = 0; i < s->txq_num; i++) {
1452 int idx = s->txq_descr[i].intr_idx;
1453 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1454 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1455 }
1456
1457 for (i = 0; i < s->rxq_num; i++) {
1458 int idx = s->rxq_descr[i].intr_idx;
1459 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1460 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1461 }
1462 }
1463
1464 static void vmxnet3_validate_queues(VMXNET3State *s)
1465 {
1466 /*
1467 * txq_num and rxq_num are total number of queues
1468 * configured by guest. These numbers must not
1469 * exceed corresponding maximal values.
1470 */
1471
1472 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1473 hw_error("Bad TX queues number: %d\n", s->txq_num);
1474 }
1475
1476 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1477 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1478 }
1479 }
1480
1481 static void vmxnet3_activate_device(VMXNET3State *s)
1482 {
1483 int i;
1484 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1485 PCIDevice *d = PCI_DEVICE(s);
1486 hwaddr qdescr_table_pa;
1487 uint64_t pa;
1488 uint32_t size;
1489
1490 /* Verify configuration consistency */
1491 if (!vmxnet3_verify_driver_magic(d, s->drv_shmem)) {
1492 VMW_ERPRN("Device configuration received from driver is invalid");
1493 return;
1494 }
1495
1496 /* Verify if device is active */
1497 if (s->device_active) {
1498 VMW_CFPRN("Vmxnet3 device is active");
1499 return;
1500 }
1501
1502 vmxnet3_adjust_by_guest_type(s);
1503 vmxnet3_update_features(s);
1504 vmxnet3_update_pm_state(s);
1505 vmxnet3_setup_rx_filtering(s);
1506 /* Cache fields from shared memory */
1507 s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
1508 VMW_CFPRN("MTU is %u", s->mtu);
1509
1510 s->max_rx_frags =
1511 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1512
1513 if (s->max_rx_frags == 0) {
1514 s->max_rx_frags = 1;
1515 }
1516
1517 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1518
1519 s->event_int_idx =
1520 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1521 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1522 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1523
1524 s->auto_int_masking =
1525 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1526 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1527
1528 s->txq_num =
1529 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numTxQueues);
1530 s->rxq_num =
1531 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numRxQueues);
1532
1533 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1534 vmxnet3_validate_queues(s);
1535
1536 qdescr_table_pa =
1537 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1538 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1539
1540 /*
1541 * Worst-case scenario is a packet that holds all TX rings space so
1542 * we calculate total size of all TX rings for max TX fragments number
1543 */
1544 s->max_tx_frags = 0;
1545
1546 /* TX queues */
1547 for (i = 0; i < s->txq_num; i++) {
1548 hwaddr qdescr_pa =
1549 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1550
1551 /* Read interrupt number for this TX queue */
1552 s->txq_descr[i].intr_idx =
1553 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1554 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1555
1556 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1557
1558 /* Read rings memory locations for TX queues */
1559 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1560 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1561
1562 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1563 sizeof(struct Vmxnet3_TxDesc), false);
1564 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1565
1566 s->max_tx_frags += size;
1567
1568 /* TXC ring */
1569 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1570 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1571 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1572 sizeof(struct Vmxnet3_TxCompDesc), true);
1573 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1574
1575 s->txq_descr[i].tx_stats_pa =
1576 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1577
1578 memset(&s->txq_descr[i].txq_stats, 0,
1579 sizeof(s->txq_descr[i].txq_stats));
1580
1581 /* Fill device-managed parameters for queues */
1582 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1583 ctrl.txThreshold,
1584 VMXNET3_DEF_TX_THRESHOLD);
1585 }
1586
1587 /* Preallocate TX packet wrapper */
1588 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1589 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1590 s->max_tx_frags, s->peer_has_vhdr);
1591 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1592
1593 /* Read rings memory locations for RX queues */
1594 for (i = 0; i < s->rxq_num; i++) {
1595 int j;
1596 hwaddr qd_pa =
1597 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1598 i * sizeof(struct Vmxnet3_RxQueueDesc);
1599
1600 /* Read interrupt number for this RX queue */
1601 s->rxq_descr[i].intr_idx =
1602 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1603 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1604
1605 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1606
1607 /* Read rings memory locations */
1608 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1609 /* RX rings */
1610 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1611 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1612 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1613 sizeof(struct Vmxnet3_RxDesc), false);
1614 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1615 i, j, pa, size);
1616 }
1617
1618 /* RXC ring */
1619 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1620 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1621 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1622 sizeof(struct Vmxnet3_RxCompDesc), true);
1623 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1624
1625 s->rxq_descr[i].rx_stats_pa =
1626 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1627 memset(&s->rxq_descr[i].rxq_stats, 0,
1628 sizeof(s->rxq_descr[i].rxq_stats));
1629 }
1630
1631 vmxnet3_validate_interrupts(s);
1632
1633 /* Make sure everything is in place before device activation */
1634 smp_wmb();
1635
1636 vmxnet3_reset_mac(s);
1637
1638 s->device_active = true;
1639 }
1640
1641 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1642 {
1643 s->last_command = cmd;
1644
1645 switch (cmd) {
1646 case VMXNET3_CMD_GET_PERM_MAC_HI:
1647 VMW_CBPRN("Set: Get upper part of permanent MAC");
1648 break;
1649
1650 case VMXNET3_CMD_GET_PERM_MAC_LO:
1651 VMW_CBPRN("Set: Get lower part of permanent MAC");
1652 break;
1653
1654 case VMXNET3_CMD_GET_STATS:
1655 VMW_CBPRN("Set: Get device statistics");
1656 vmxnet3_fill_stats(s);
1657 break;
1658
1659 case VMXNET3_CMD_ACTIVATE_DEV:
1660 VMW_CBPRN("Set: Activating vmxnet3 device");
1661 vmxnet3_activate_device(s);
1662 break;
1663
1664 case VMXNET3_CMD_UPDATE_RX_MODE:
1665 VMW_CBPRN("Set: Update rx mode");
1666 vmxnet3_update_rx_mode(s);
1667 break;
1668
1669 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1670 VMW_CBPRN("Set: Update VLAN filters");
1671 vmxnet3_update_vlan_filters(s);
1672 break;
1673
1674 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1675 VMW_CBPRN("Set: Update MAC filters");
1676 vmxnet3_update_mcast_filters(s);
1677 break;
1678
1679 case VMXNET3_CMD_UPDATE_FEATURE:
1680 VMW_CBPRN("Set: Update features");
1681 vmxnet3_update_features(s);
1682 break;
1683
1684 case VMXNET3_CMD_UPDATE_PMCFG:
1685 VMW_CBPRN("Set: Update power management config");
1686 vmxnet3_update_pm_state(s);
1687 break;
1688
1689 case VMXNET3_CMD_GET_LINK:
1690 VMW_CBPRN("Set: Get link");
1691 break;
1692
1693 case VMXNET3_CMD_RESET_DEV:
1694 VMW_CBPRN("Set: Reset device");
1695 vmxnet3_reset(s);
1696 break;
1697
1698 case VMXNET3_CMD_QUIESCE_DEV:
1699 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1700 vmxnet3_deactivate_device(s);
1701 break;
1702
1703 case VMXNET3_CMD_GET_CONF_INTR:
1704 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1705 break;
1706
1707 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1708 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1709 "adaptive ring info flags");
1710 break;
1711
1712 case VMXNET3_CMD_GET_DID_LO:
1713 VMW_CBPRN("Set: Get lower part of device ID");
1714 break;
1715
1716 case VMXNET3_CMD_GET_DID_HI:
1717 VMW_CBPRN("Set: Get upper part of device ID");
1718 break;
1719
1720 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1721 VMW_CBPRN("Set: Get device extra info");
1722 break;
1723
1724 default:
1725 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1726 break;
1727 }
1728 }
1729
1730 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1731 {
1732 uint64_t ret;
1733
1734 switch (s->last_command) {
1735 case VMXNET3_CMD_ACTIVATE_DEV:
1736 ret = (s->device_active) ? 0 : 1;
1737 VMW_CFPRN("Device active: %" PRIx64, ret);
1738 break;
1739
1740 case VMXNET3_CMD_RESET_DEV:
1741 case VMXNET3_CMD_QUIESCE_DEV:
1742 case VMXNET3_CMD_GET_QUEUE_STATUS:
1743 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1744 ret = 0;
1745 break;
1746
1747 case VMXNET3_CMD_GET_LINK:
1748 ret = s->link_status_and_speed;
1749 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1750 break;
1751
1752 case VMXNET3_CMD_GET_PERM_MAC_LO:
1753 ret = vmxnet3_get_mac_low(&s->perm_mac);
1754 break;
1755
1756 case VMXNET3_CMD_GET_PERM_MAC_HI:
1757 ret = vmxnet3_get_mac_high(&s->perm_mac);
1758 break;
1759
1760 case VMXNET3_CMD_GET_CONF_INTR:
1761 ret = vmxnet3_get_interrupt_config(s);
1762 break;
1763
1764 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1765 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1766 break;
1767
1768 case VMXNET3_CMD_GET_DID_LO:
1769 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1770 break;
1771
1772 case VMXNET3_CMD_GET_DID_HI:
1773 ret = VMXNET3_DEVICE_REVISION;
1774 break;
1775
1776 default:
1777 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1778 ret = 0;
1779 break;
1780 }
1781
1782 return ret;
1783 }
1784
1785 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1786 {
1787 uint32_t events;
1788 PCIDevice *d = PCI_DEVICE(s);
1789
1790 VMW_CBPRN("Setting events: 0x%x", val);
1791 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1792 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1793 }
1794
1795 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1796 {
1797 PCIDevice *d = PCI_DEVICE(s);
1798 uint32_t events;
1799
1800 VMW_CBPRN("Clearing events: 0x%x", val);
1801 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1802 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1803 }
1804
1805 static void
1806 vmxnet3_io_bar1_write(void *opaque,
1807 hwaddr addr,
1808 uint64_t val,
1809 unsigned size)
1810 {
1811 VMXNET3State *s = opaque;
1812
1813 switch (addr) {
1814 /* Vmxnet3 Revision Report Selection */
1815 case VMXNET3_REG_VRRS:
1816 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1817 val, size);
1818 break;
1819
1820 /* UPT Version Report Selection */
1821 case VMXNET3_REG_UVRS:
1822 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1823 val, size);
1824 break;
1825
1826 /* Driver Shared Address Low */
1827 case VMXNET3_REG_DSAL:
1828 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1829 val, size);
1830 /*
1831 * Guest driver will first write the low part of the shared
1832 * memory address. We save it to temp variable and set the
1833 * shared address only after we get the high part
1834 */
1835 if (val == 0) {
1836 vmxnet3_deactivate_device(s);
1837 }
1838 s->temp_shared_guest_driver_memory = val;
1839 s->drv_shmem = 0;
1840 break;
1841
1842 /* Driver Shared Address High */
1843 case VMXNET3_REG_DSAH:
1844 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1845 val, size);
1846 /*
1847 * Set the shared memory between guest driver and device.
1848 * We already should have low address part.
1849 */
1850 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1851 break;
1852
1853 /* Command */
1854 case VMXNET3_REG_CMD:
1855 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1856 val, size);
1857 vmxnet3_handle_command(s, val);
1858 break;
1859
1860 /* MAC Address Low */
1861 case VMXNET3_REG_MACL:
1862 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1863 val, size);
1864 s->temp_mac = val;
1865 break;
1866
1867 /* MAC Address High */
1868 case VMXNET3_REG_MACH:
1869 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1870 val, size);
1871 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1872 break;
1873
1874 /* Interrupt Cause Register */
1875 case VMXNET3_REG_ICR:
1876 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1877 val, size);
1878 g_assert_not_reached();
1879 break;
1880
1881 /* Event Cause Register */
1882 case VMXNET3_REG_ECR:
1883 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1884 val, size);
1885 vmxnet3_ack_events(s, val);
1886 break;
1887
1888 default:
1889 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1890 addr, val, size);
1891 break;
1892 }
1893 }
1894
1895 static uint64_t
1896 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1897 {
1898 VMXNET3State *s = opaque;
1899 uint64_t ret = 0;
1900
1901 switch (addr) {
1902 /* Vmxnet3 Revision Report Selection */
1903 case VMXNET3_REG_VRRS:
1904 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1905 ret = VMXNET3_DEVICE_REVISION;
1906 break;
1907
1908 /* UPT Version Report Selection */
1909 case VMXNET3_REG_UVRS:
1910 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1911 ret = VMXNET3_UPT_REVISION;
1912 break;
1913
1914 /* Command */
1915 case VMXNET3_REG_CMD:
1916 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1917 ret = vmxnet3_get_command_status(s);
1918 break;
1919
1920 /* MAC Address Low */
1921 case VMXNET3_REG_MACL:
1922 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1923 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1924 break;
1925
1926 /* MAC Address High */
1927 case VMXNET3_REG_MACH:
1928 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1929 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1930 break;
1931
1932 /*
1933 * Interrupt Cause Register
1934 * Used for legacy interrupts only so interrupt index always 0
1935 */
1936 case VMXNET3_REG_ICR:
1937 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1938 if (vmxnet3_interrupt_asserted(s, 0)) {
1939 vmxnet3_clear_interrupt(s, 0);
1940 ret = true;
1941 } else {
1942 ret = false;
1943 }
1944 break;
1945
1946 default:
1947 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1948 break;
1949 }
1950
1951 return ret;
1952 }
1953
1954 static int
1955 vmxnet3_can_receive(NetClientState *nc)
1956 {
1957 VMXNET3State *s = qemu_get_nic_opaque(nc);
1958 return s->device_active &&
1959 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1960 }
1961
1962 static inline bool
1963 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1964 {
1965 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1966 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1967 return true;
1968 }
1969
1970 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1971 }
1972
1973 static bool
1974 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1975 {
1976 int i;
1977 for (i = 0; i < s->mcast_list_len; i++) {
1978 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1979 return true;
1980 }
1981 }
1982 return false;
1983 }
1984
1985 static bool
1986 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1987 size_t size)
1988 {
1989 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1990
1991 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1992 return true;
1993 }
1994
1995 if (!vmxnet3_is_registered_vlan(s, data)) {
1996 return false;
1997 }
1998
1999 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
2000 case ETH_PKT_UCAST:
2001 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
2002 return false;
2003 }
2004 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
2005 return false;
2006 }
2007 break;
2008
2009 case ETH_PKT_BCAST:
2010 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
2011 return false;
2012 }
2013 break;
2014
2015 case ETH_PKT_MCAST:
2016 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
2017 return true;
2018 }
2019 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
2020 return false;
2021 }
2022 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
2023 return false;
2024 }
2025 break;
2026
2027 default:
2028 g_assert_not_reached();
2029 }
2030
2031 return true;
2032 }
2033
2034 static ssize_t
2035 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
2036 {
2037 VMXNET3State *s = qemu_get_nic_opaque(nc);
2038 size_t bytes_indicated;
2039 uint8_t min_buf[MIN_BUF_SIZE];
2040
2041 if (!vmxnet3_can_receive(nc)) {
2042 VMW_PKPRN("Cannot receive now");
2043 return -1;
2044 }
2045
2046 if (s->peer_has_vhdr) {
2047 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
2048 buf += sizeof(struct virtio_net_hdr);
2049 size -= sizeof(struct virtio_net_hdr);
2050 }
2051
2052 /* Pad to minimum Ethernet frame length */
2053 if (size < sizeof(min_buf)) {
2054 memcpy(min_buf, buf, size);
2055 memset(&min_buf[size], 0, sizeof(min_buf) - size);
2056 buf = min_buf;
2057 size = sizeof(min_buf);
2058 }
2059
2060 net_rx_pkt_set_packet_type(s->rx_pkt,
2061 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
2062
2063 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2064 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
2065 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2066 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2067 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2068 if (bytes_indicated < size) {
2069 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2070 }
2071 } else {
2072 VMW_PKPRN("Packet dropped by RX filter");
2073 bytes_indicated = size;
2074 }
2075
2076 assert(size > 0);
2077 assert(bytes_indicated != 0);
2078 return bytes_indicated;
2079 }
2080
2081 static void vmxnet3_set_link_status(NetClientState *nc)
2082 {
2083 VMXNET3State *s = qemu_get_nic_opaque(nc);
2084
2085 if (nc->link_down) {
2086 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2087 } else {
2088 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2089 }
2090
2091 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2092 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2093 }
2094
2095 static NetClientInfo net_vmxnet3_info = {
2096 .type = NET_CLIENT_DRIVER_NIC,
2097 .size = sizeof(NICState),
2098 .receive = vmxnet3_receive,
2099 .link_status_changed = vmxnet3_set_link_status,
2100 };
2101
2102 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2103 {
2104 NetClientState *nc = qemu_get_queue(s->nic);
2105
2106 if (qemu_has_vnet_hdr(nc->peer)) {
2107 return true;
2108 }
2109
2110 return false;
2111 }
2112
2113 static void vmxnet3_net_uninit(VMXNET3State *s)
2114 {
2115 g_free(s->mcast_list);
2116 vmxnet3_deactivate_device(s);
2117 qemu_del_nic(s->nic);
2118 }
2119
2120 static void vmxnet3_net_init(VMXNET3State *s)
2121 {
2122 DeviceState *d = DEVICE(s);
2123
2124 VMW_CBPRN("vmxnet3_net_init called...");
2125
2126 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2127
2128 /* Windows guest will query the address that was set on init */
2129 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2130
2131 s->mcast_list = NULL;
2132 s->mcast_list_len = 0;
2133
2134 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2135
2136 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2137
2138 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2139 object_get_typename(OBJECT(s)),
2140 d->id, s);
2141
2142 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2143 s->tx_sop = true;
2144 s->skip_current_tx_pkt = false;
2145 s->tx_pkt = NULL;
2146 s->rx_pkt = NULL;
2147 s->rx_vlan_stripping = false;
2148 s->lro_supported = false;
2149
2150 if (s->peer_has_vhdr) {
2151 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2152 sizeof(struct virtio_net_hdr));
2153
2154 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2155 }
2156
2157 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2158 }
2159
2160 static void
2161 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2162 {
2163 PCIDevice *d = PCI_DEVICE(s);
2164 int i;
2165 for (i = 0; i < num_vectors; i++) {
2166 msix_vector_unuse(d, i);
2167 }
2168 }
2169
2170 static bool
2171 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2172 {
2173 PCIDevice *d = PCI_DEVICE(s);
2174 int i;
2175 for (i = 0; i < num_vectors; i++) {
2176 int res = msix_vector_use(d, i);
2177 if (0 > res) {
2178 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2179 vmxnet3_unuse_msix_vectors(s, i);
2180 return false;
2181 }
2182 }
2183 return true;
2184 }
2185
2186 static bool
2187 vmxnet3_init_msix(VMXNET3State *s)
2188 {
2189 PCIDevice *d = PCI_DEVICE(s);
2190 int res = msix_init(d, VMXNET3_MAX_INTRS,
2191 &s->msix_bar,
2192 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2193 &s->msix_bar,
2194 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2195 VMXNET3_MSIX_OFFSET(s), NULL);
2196
2197 if (0 > res) {
2198 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2199 s->msix_used = false;
2200 } else {
2201 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2202 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2203 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2204 s->msix_used = false;
2205 } else {
2206 s->msix_used = true;
2207 }
2208 }
2209 return s->msix_used;
2210 }
2211
2212 static void
2213 vmxnet3_cleanup_msix(VMXNET3State *s)
2214 {
2215 PCIDevice *d = PCI_DEVICE(s);
2216
2217 if (s->msix_used) {
2218 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2219 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2220 }
2221 }
2222
2223 static void
2224 vmxnet3_cleanup_msi(VMXNET3State *s)
2225 {
2226 PCIDevice *d = PCI_DEVICE(s);
2227
2228 msi_uninit(d);
2229 }
2230
2231 static void
2232 vmxnet3_msix_save(QEMUFile *f, void *opaque)
2233 {
2234 PCIDevice *d = PCI_DEVICE(opaque);
2235 msix_save(d, f);
2236 }
2237
2238 static int
2239 vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
2240 {
2241 PCIDevice *d = PCI_DEVICE(opaque);
2242 msix_load(d, f);
2243 return 0;
2244 }
2245
2246 static const MemoryRegionOps b0_ops = {
2247 .read = vmxnet3_io_bar0_read,
2248 .write = vmxnet3_io_bar0_write,
2249 .endianness = DEVICE_LITTLE_ENDIAN,
2250 .impl = {
2251 .min_access_size = 4,
2252 .max_access_size = 4,
2253 },
2254 };
2255
2256 static const MemoryRegionOps b1_ops = {
2257 .read = vmxnet3_io_bar1_read,
2258 .write = vmxnet3_io_bar1_write,
2259 .endianness = DEVICE_LITTLE_ENDIAN,
2260 .impl = {
2261 .min_access_size = 4,
2262 .max_access_size = 4,
2263 },
2264 };
2265
2266 static SaveVMHandlers savevm_vmxnet3_msix = {
2267 .save_state = vmxnet3_msix_save,
2268 .load_state = vmxnet3_msix_load,
2269 };
2270
2271 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2272 {
2273 uint64_t dsn_payload;
2274 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2275
2276 dsnp[0] = 0xfe;
2277 dsnp[1] = s->conf.macaddr.a[3];
2278 dsnp[2] = s->conf.macaddr.a[4];
2279 dsnp[3] = s->conf.macaddr.a[5];
2280 dsnp[4] = s->conf.macaddr.a[0];
2281 dsnp[5] = s->conf.macaddr.a[1];
2282 dsnp[6] = s->conf.macaddr.a[2];
2283 dsnp[7] = 0xff;
2284 return dsn_payload;
2285 }
2286
2287
2288 #define VMXNET3_USE_64BIT (true)
2289 #define VMXNET3_PER_VECTOR_MASK (false)
2290
2291 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2292 {
2293 DeviceState *dev = DEVICE(pci_dev);
2294 VMXNET3State *s = VMXNET3(pci_dev);
2295 int ret;
2296
2297 VMW_CBPRN("Starting init...");
2298
2299 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2300 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2301 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2302 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2303
2304 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2305 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2306 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2307 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2308
2309 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2310 VMXNET3_MSIX_BAR_SIZE);
2311 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2312 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2313
2314 vmxnet3_reset_interrupt_states(s);
2315
2316 /* Interrupt pin A */
2317 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2318
2319 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2320 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2321 /* Any error other than -ENOTSUP(board's MSI support is broken)
2322 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2323 assert(!ret || ret == -ENOTSUP);
2324
2325 if (!vmxnet3_init_msix(s)) {
2326 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2327 }
2328
2329 vmxnet3_net_init(s);
2330
2331 if (pci_is_express(pci_dev)) {
2332 if (pci_bus_is_express(pci_dev->bus)) {
2333 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2334 }
2335
2336 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2337 vmxnet3_device_serial_num(s));
2338 }
2339
2340 register_savevm_live(dev, "vmxnet3-msix", -1, 1, &savevm_vmxnet3_msix, s);
2341 }
2342
2343 static void vmxnet3_instance_init(Object *obj)
2344 {
2345 VMXNET3State *s = VMXNET3(obj);
2346 device_add_bootindex_property(obj, &s->conf.bootindex,
2347 "bootindex", "/ethernet-phy@0",
2348 DEVICE(obj), NULL);
2349 }
2350
2351 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2352 {
2353 DeviceState *dev = DEVICE(pci_dev);
2354 VMXNET3State *s = VMXNET3(pci_dev);
2355
2356 VMW_CBPRN("Starting uninit...");
2357
2358 unregister_savevm(dev, "vmxnet3-msix", s);
2359
2360 vmxnet3_net_uninit(s);
2361
2362 vmxnet3_cleanup_msix(s);
2363
2364 vmxnet3_cleanup_msi(s);
2365 }
2366
2367 static void vmxnet3_qdev_reset(DeviceState *dev)
2368 {
2369 PCIDevice *d = PCI_DEVICE(dev);
2370 VMXNET3State *s = VMXNET3(d);
2371
2372 VMW_CBPRN("Starting QDEV reset...");
2373 vmxnet3_reset(s);
2374 }
2375
2376 static bool vmxnet3_mc_list_needed(void *opaque)
2377 {
2378 return true;
2379 }
2380
2381 static int vmxnet3_mcast_list_pre_load(void *opaque)
2382 {
2383 VMXNET3State *s = opaque;
2384
2385 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2386
2387 return 0;
2388 }
2389
2390
2391 static void vmxnet3_pre_save(void *opaque)
2392 {
2393 VMXNET3State *s = opaque;
2394
2395 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2396 }
2397
2398 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2399 .name = "vmxnet3/mcast_list",
2400 .version_id = 1,
2401 .minimum_version_id = 1,
2402 .pre_load = vmxnet3_mcast_list_pre_load,
2403 .needed = vmxnet3_mc_list_needed,
2404 .fields = (VMStateField[]) {
2405 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL,
2406 mcast_list_buff_size),
2407 VMSTATE_END_OF_LIST()
2408 }
2409 };
2410
2411 static const VMStateDescription vmstate_vmxnet3_ring = {
2412 .name = "vmxnet3-ring",
2413 .version_id = 0,
2414 .fields = (VMStateField[]) {
2415 VMSTATE_UINT64(pa, Vmxnet3Ring),
2416 VMSTATE_UINT32(size, Vmxnet3Ring),
2417 VMSTATE_UINT32(cell_size, Vmxnet3Ring),
2418 VMSTATE_UINT32(next, Vmxnet3Ring),
2419 VMSTATE_UINT8(gen, Vmxnet3Ring),
2420 VMSTATE_END_OF_LIST()
2421 }
2422 };
2423
2424 static const VMStateDescription vmstate_vmxnet3_tx_stats = {
2425 .name = "vmxnet3-tx-stats",
2426 .version_id = 0,
2427 .fields = (VMStateField[]) {
2428 VMSTATE_UINT64(TSOPktsTxOK, struct UPT1_TxStats),
2429 VMSTATE_UINT64(TSOBytesTxOK, struct UPT1_TxStats),
2430 VMSTATE_UINT64(ucastPktsTxOK, struct UPT1_TxStats),
2431 VMSTATE_UINT64(ucastBytesTxOK, struct UPT1_TxStats),
2432 VMSTATE_UINT64(mcastPktsTxOK, struct UPT1_TxStats),
2433 VMSTATE_UINT64(mcastBytesTxOK, struct UPT1_TxStats),
2434 VMSTATE_UINT64(bcastPktsTxOK, struct UPT1_TxStats),
2435 VMSTATE_UINT64(bcastBytesTxOK, struct UPT1_TxStats),
2436 VMSTATE_UINT64(pktsTxError, struct UPT1_TxStats),
2437 VMSTATE_UINT64(pktsTxDiscard, struct UPT1_TxStats),
2438 VMSTATE_END_OF_LIST()
2439 }
2440 };
2441
2442 static const VMStateDescription vmstate_vmxnet3_txq_descr = {
2443 .name = "vmxnet3-txq-descr",
2444 .version_id = 0,
2445 .fields = (VMStateField[]) {
2446 VMSTATE_STRUCT(tx_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2447 Vmxnet3Ring),
2448 VMSTATE_STRUCT(comp_ring, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_ring,
2449 Vmxnet3Ring),
2450 VMSTATE_UINT8(intr_idx, Vmxnet3TxqDescr),
2451 VMSTATE_UINT64(tx_stats_pa, Vmxnet3TxqDescr),
2452 VMSTATE_STRUCT(txq_stats, Vmxnet3TxqDescr, 0, vmstate_vmxnet3_tx_stats,
2453 struct UPT1_TxStats),
2454 VMSTATE_END_OF_LIST()
2455 }
2456 };
2457
2458 static const VMStateDescription vmstate_vmxnet3_rx_stats = {
2459 .name = "vmxnet3-rx-stats",
2460 .version_id = 0,
2461 .fields = (VMStateField[]) {
2462 VMSTATE_UINT64(LROPktsRxOK, struct UPT1_RxStats),
2463 VMSTATE_UINT64(LROBytesRxOK, struct UPT1_RxStats),
2464 VMSTATE_UINT64(ucastPktsRxOK, struct UPT1_RxStats),
2465 VMSTATE_UINT64(ucastBytesRxOK, struct UPT1_RxStats),
2466 VMSTATE_UINT64(mcastPktsRxOK, struct UPT1_RxStats),
2467 VMSTATE_UINT64(mcastBytesRxOK, struct UPT1_RxStats),
2468 VMSTATE_UINT64(bcastPktsRxOK, struct UPT1_RxStats),
2469 VMSTATE_UINT64(bcastBytesRxOK, struct UPT1_RxStats),
2470 VMSTATE_UINT64(pktsRxOutOfBuf, struct UPT1_RxStats),
2471 VMSTATE_UINT64(pktsRxError, struct UPT1_RxStats),
2472 VMSTATE_END_OF_LIST()
2473 }
2474 };
2475
2476 static const VMStateDescription vmstate_vmxnet3_rxq_descr = {
2477 .name = "vmxnet3-rxq-descr",
2478 .version_id = 0,
2479 .fields = (VMStateField[]) {
2480 VMSTATE_STRUCT_ARRAY(rx_ring, Vmxnet3RxqDescr,
2481 VMXNET3_RX_RINGS_PER_QUEUE, 0,
2482 vmstate_vmxnet3_ring, Vmxnet3Ring),
2483 VMSTATE_STRUCT(comp_ring, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_ring,
2484 Vmxnet3Ring),
2485 VMSTATE_UINT8(intr_idx, Vmxnet3RxqDescr),
2486 VMSTATE_UINT64(rx_stats_pa, Vmxnet3RxqDescr),
2487 VMSTATE_STRUCT(rxq_stats, Vmxnet3RxqDescr, 0, vmstate_vmxnet3_rx_stats,
2488 struct UPT1_RxStats),
2489 VMSTATE_END_OF_LIST()
2490 }
2491 };
2492
2493 static int vmxnet3_post_load(void *opaque, int version_id)
2494 {
2495 VMXNET3State *s = opaque;
2496 PCIDevice *d = PCI_DEVICE(s);
2497
2498 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2499 s->max_tx_frags, s->peer_has_vhdr);
2500 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2501
2502 if (s->msix_used) {
2503 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2504 VMW_WRPRN("Failed to re-use MSI-X vectors");
2505 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2506 s->msix_used = false;
2507 return -1;
2508 }
2509 }
2510
2511 vmxnet3_validate_queues(s);
2512 vmxnet3_validate_interrupts(s);
2513
2514 return 0;
2515 }
2516
2517 static const VMStateDescription vmstate_vmxnet3_int_state = {
2518 .name = "vmxnet3-int-state",
2519 .version_id = 0,
2520 .fields = (VMStateField[]) {
2521 VMSTATE_BOOL(is_masked, Vmxnet3IntState),
2522 VMSTATE_BOOL(is_pending, Vmxnet3IntState),
2523 VMSTATE_BOOL(is_asserted, Vmxnet3IntState),
2524 VMSTATE_END_OF_LIST()
2525 }
2526 };
2527
2528 static bool vmxnet3_vmstate_need_pcie_device(void *opaque)
2529 {
2530 VMXNET3State *s = VMXNET3(opaque);
2531
2532 return !(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE);
2533 }
2534
2535 static bool vmxnet3_vmstate_test_pci_device(void *opaque, int version_id)
2536 {
2537 return !vmxnet3_vmstate_need_pcie_device(opaque);
2538 }
2539
2540 static const VMStateDescription vmstate_vmxnet3_pcie_device = {
2541 .name = "vmxnet3/pcie",
2542 .version_id = 1,
2543 .minimum_version_id = 1,
2544 .needed = vmxnet3_vmstate_need_pcie_device,
2545 .fields = (VMStateField[]) {
2546 VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
2547 VMSTATE_END_OF_LIST()
2548 }
2549 };
2550
2551 static const VMStateDescription vmstate_vmxnet3 = {
2552 .name = "vmxnet3",
2553 .version_id = 1,
2554 .minimum_version_id = 1,
2555 .pre_save = vmxnet3_pre_save,
2556 .post_load = vmxnet3_post_load,
2557 .fields = (VMStateField[]) {
2558 VMSTATE_STRUCT_TEST(parent_obj, VMXNET3State,
2559 vmxnet3_vmstate_test_pci_device, 0,
2560 vmstate_pci_device, PCIDevice),
2561 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2562 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2563 VMSTATE_BOOL(lro_supported, VMXNET3State),
2564 VMSTATE_UINT32(rx_mode, VMXNET3State),
2565 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2566 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2567 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2568 VMSTATE_UINT32(mtu, VMXNET3State),
2569 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2570 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2571 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2572 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2573 VMSTATE_UINT8(txq_num, VMXNET3State),
2574 VMSTATE_UINT8(rxq_num, VMXNET3State),
2575 VMSTATE_UINT32(device_active, VMXNET3State),
2576 VMSTATE_UINT32(last_command, VMXNET3State),
2577 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2578 VMSTATE_UINT32(temp_mac, VMXNET3State),
2579 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2580 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2581
2582 VMSTATE_STRUCT_ARRAY(txq_descr, VMXNET3State,
2583 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, vmstate_vmxnet3_txq_descr,
2584 Vmxnet3TxqDescr),
2585 VMSTATE_STRUCT_ARRAY(rxq_descr, VMXNET3State,
2586 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, vmstate_vmxnet3_rxq_descr,
2587 Vmxnet3RxqDescr),
2588 VMSTATE_STRUCT_ARRAY(interrupt_states, VMXNET3State,
2589 VMXNET3_MAX_INTRS, 0, vmstate_vmxnet3_int_state,
2590 Vmxnet3IntState),
2591
2592 VMSTATE_END_OF_LIST()
2593 },
2594 .subsections = (const VMStateDescription*[]) {
2595 &vmxstate_vmxnet3_mcast_list,
2596 &vmstate_vmxnet3_pcie_device,
2597 NULL
2598 }
2599 };
2600
2601 static Property vmxnet3_properties[] = {
2602 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2603 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2604 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2605 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2606 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2607 DEFINE_PROP_END_OF_LIST(),
2608 };
2609
2610 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2611 {
2612 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2613 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2614 VMXNET3State *s = VMXNET3(qdev);
2615
2616 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2617 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2618 }
2619
2620 vc->parent_dc_realize(qdev, errp);
2621 }
2622
2623 static void vmxnet3_class_init(ObjectClass *class, void *data)
2624 {
2625 DeviceClass *dc = DEVICE_CLASS(class);
2626 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2627 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2628
2629 c->realize = vmxnet3_pci_realize;
2630 c->exit = vmxnet3_pci_uninit;
2631 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2632 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2633 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2634 c->romfile = "efi-vmxnet3.rom";
2635 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2636 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2637 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2638 vc->parent_dc_realize = dc->realize;
2639 dc->realize = vmxnet3_realize;
2640 dc->desc = "VMWare Paravirtualized Ethernet v3";
2641 dc->reset = vmxnet3_qdev_reset;
2642 dc->vmsd = &vmstate_vmxnet3;
2643 dc->props = vmxnet3_properties;
2644 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2645 }
2646
2647 static const TypeInfo vmxnet3_info = {
2648 .name = TYPE_VMXNET3,
2649 .parent = TYPE_PCI_DEVICE,
2650 .class_size = sizeof(VMXNET3Class),
2651 .instance_size = sizeof(VMXNET3State),
2652 .class_init = vmxnet3_class_init,
2653 .instance_init = vmxnet3_instance_init,
2654 };
2655
2656 static void vmxnet3_register_types(void)
2657 {
2658 VMW_CBPRN("vmxnet3_register_types called...");
2659 type_register_static(&vmxnet3_info);
2660 }
2661
2662 type_init(vmxnet3_register_types)
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