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vmxnet3: remove unnecessary internal msi state flag
[qemu/cris-port.git] / hw / net / vmxnet3.c
blob59948906916012e96eec6c6f7f4a56cd72554ccf
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
30 #include "vmxnet3.h"
31 #include "vmxnet_debug.h"
32 #include "vmware_utils.h"
33 #include "net_tx_pkt.h"
34 #include "net_rx_pkt.h"
35
36 #define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
37 #define VMXNET3_MSIX_BAR_SIZE 0x2000
38 #define MIN_BUF_SIZE 60
39
40 /* Compatibility flags for migration */
41 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT 0
42 #define VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS \
43 (1 << VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT)
44 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT 1
45 #define VMXNET3_COMPAT_FLAG_DISABLE_PCIE \
46 (1 << VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT)
47
48 #define VMXNET3_EXP_EP_OFFSET (0x48)
49 #define VMXNET3_MSI_OFFSET(s) \
50 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x50 : 0x84)
51 #define VMXNET3_MSIX_OFFSET(s) \
52 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0 : 0x9c)
53 #define VMXNET3_DSN_OFFSET (0x100)
54
55 #define VMXNET3_BAR0_IDX (0)
56 #define VMXNET3_BAR1_IDX (1)
57 #define VMXNET3_MSIX_BAR_IDX (2)
58
59 #define VMXNET3_OFF_MSIX_TABLE (0x000)
60 #define VMXNET3_OFF_MSIX_PBA(s) \
61 ((s)->compat_flags & VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS ? 0x800 : 0x1000)
62
63 /* Link speed in Mbps should be shifted by 16 */
64 #define VMXNET3_LINK_SPEED (1000 << 16)
65
66 /* Link status: 1 - up, 0 - down. */
67 #define VMXNET3_LINK_STATUS_UP 0x1
68
69 /* Least significant bit should be set for revision and version */
70 #define VMXNET3_UPT_REVISION 0x1
71 #define VMXNET3_DEVICE_REVISION 0x1
72
73 /* Number of interrupt vectors for non-MSIx modes */
74 #define VMXNET3_MAX_NMSIX_INTRS (1)
75
76 /* Macros for rings descriptors access */
77 #define VMXNET3_READ_TX_QUEUE_DESCR8(_d, dpa, field) \
78 (vmw_shmem_ld8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
79
80 #define VMXNET3_WRITE_TX_QUEUE_DESCR8(_d, dpa, field, value) \
81 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
82
83 #define VMXNET3_READ_TX_QUEUE_DESCR32(_d, dpa, field) \
84 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
85
86 #define VMXNET3_WRITE_TX_QUEUE_DESCR32(_d, dpa, field, value) \
87 (vmw_shmem_st32(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
88
89 #define VMXNET3_READ_TX_QUEUE_DESCR64(_d, dpa, field) \
90 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
91
92 #define VMXNET3_WRITE_TX_QUEUE_DESCR64(_d, dpa, field, value) \
93 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
94
95 #define VMXNET3_READ_RX_QUEUE_DESCR64(_d, dpa, field) \
96 (vmw_shmem_ld64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
97
98 #define VMXNET3_READ_RX_QUEUE_DESCR32(_d, dpa, field) \
99 (vmw_shmem_ld32(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
100
101 #define VMXNET3_WRITE_RX_QUEUE_DESCR64(_d, dpa, field, value) \
102 (vmw_shmem_st64(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
103
104 #define VMXNET3_WRITE_RX_QUEUE_DESCR8(_d, dpa, field, value) \
105 (vmw_shmem_st8(_d, dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
106
107 /* Macros for guest driver shared area access */
108 #define VMXNET3_READ_DRV_SHARED64(_d, shpa, field) \
109 (vmw_shmem_ld64(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
110
111 #define VMXNET3_READ_DRV_SHARED32(_d, shpa, field) \
112 (vmw_shmem_ld32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
113
114 #define VMXNET3_WRITE_DRV_SHARED32(_d, shpa, field, val) \
115 (vmw_shmem_st32(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
116
117 #define VMXNET3_READ_DRV_SHARED16(_d, shpa, field) \
118 (vmw_shmem_ld16(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
119
120 #define VMXNET3_READ_DRV_SHARED8(_d, shpa, field) \
121 (vmw_shmem_ld8(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field)))
122
123 #define VMXNET3_READ_DRV_SHARED(_d, shpa, field, b, l) \
124 (vmw_shmem_read(_d, shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
125
126 #define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
127
128 typedef struct VMXNET3Class {
129 PCIDeviceClass parent_class;
130 DeviceRealize parent_dc_realize;
131 } VMXNET3Class;
132
133 #define TYPE_VMXNET3 "vmxnet3"
134 #define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)
135
136 #define VMXNET3_DEVICE_CLASS(klass) \
137 OBJECT_CLASS_CHECK(VMXNET3Class, (klass), TYPE_VMXNET3)
138 #define VMXNET3_DEVICE_GET_CLASS(obj) \
139 OBJECT_GET_CLASS(VMXNET3Class, (obj), TYPE_VMXNET3)
140
141 /* Cyclic ring abstraction */
142 typedef struct {
143 hwaddr pa;
144 size_t size;
145 size_t cell_size;
146 size_t next;
147 uint8_t gen;
148 } Vmxnet3Ring;
149
150 static inline void vmxnet3_ring_init(PCIDevice *d,
151 Vmxnet3Ring *ring,
152 hwaddr pa,
153 size_t size,
154 size_t cell_size,
155 bool zero_region)
156 {
157 ring->pa = pa;
158 ring->size = size;
159 ring->cell_size = cell_size;
160 ring->gen = VMXNET3_INIT_GEN;
161 ring->next = 0;
162
163 if (zero_region) {
164 vmw_shmem_set(d, pa, 0, size * cell_size);
165 }
166 }
167
168 #define VMXNET3_RING_DUMP(macro, ring_name, ridx, r) \
169 macro("%s#%d: base %" PRIx64 " size %zu cell_size %zu gen %d next %zu", \
170 (ring_name), (ridx), \
171 (r)->pa, (r)->size, (r)->cell_size, (r)->gen, (r)->next)
172
173 static inline void vmxnet3_ring_inc(Vmxnet3Ring *ring)
174 {
175 if (++ring->next >= ring->size) {
176 ring->next = 0;
177 ring->gen ^= 1;
178 }
179 }
180
181 static inline void vmxnet3_ring_dec(Vmxnet3Ring *ring)
182 {
183 if (ring->next-- == 0) {
184 ring->next = ring->size - 1;
185 ring->gen ^= 1;
186 }
187 }
188
189 static inline hwaddr vmxnet3_ring_curr_cell_pa(Vmxnet3Ring *ring)
190 {
191 return ring->pa + ring->next * ring->cell_size;
192 }
193
194 static inline void vmxnet3_ring_read_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
195 void *buff)
196 {
197 vmw_shmem_read(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
198 }
199
200 static inline void vmxnet3_ring_write_curr_cell(PCIDevice *d, Vmxnet3Ring *ring,
201 void *buff)
202 {
203 vmw_shmem_write(d, vmxnet3_ring_curr_cell_pa(ring), buff, ring->cell_size);
204 }
205
206 static inline size_t vmxnet3_ring_curr_cell_idx(Vmxnet3Ring *ring)
207 {
208 return ring->next;
209 }
210
211 static inline uint8_t vmxnet3_ring_curr_gen(Vmxnet3Ring *ring)
212 {
213 return ring->gen;
214 }
215
216 /* Debug trace-related functions */
217 static inline void
218 vmxnet3_dump_tx_descr(struct Vmxnet3_TxDesc *descr)
219 {
220 VMW_PKPRN("TX DESCR: "
221 "addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
222 "dtype: %d, ext1: %d, msscof: %d, hlen: %d, om: %d, "
223 "eop: %d, cq: %d, ext2: %d, ti: %d, tci: %d",
224 le64_to_cpu(descr->addr), descr->len, descr->gen, descr->rsvd,
225 descr->dtype, descr->ext1, descr->msscof, descr->hlen, descr->om,
226 descr->eop, descr->cq, descr->ext2, descr->ti, descr->tci);
227 }
228
229 static inline void
230 vmxnet3_dump_virt_hdr(struct virtio_net_hdr *vhdr)
231 {
232 VMW_PKPRN("VHDR: flags 0x%x, gso_type: 0x%x, hdr_len: %d, gso_size: %d, "
233 "csum_start: %d, csum_offset: %d",
234 vhdr->flags, vhdr->gso_type, vhdr->hdr_len, vhdr->gso_size,
235 vhdr->csum_start, vhdr->csum_offset);
236 }
237
238 static inline void
239 vmxnet3_dump_rx_descr(struct Vmxnet3_RxDesc *descr)
240 {
241 VMW_PKPRN("RX DESCR: addr %" PRIx64 ", len: %d, gen: %d, rsvd: %d, "
242 "dtype: %d, ext1: %d, btype: %d",
243 le64_to_cpu(descr->addr), descr->len, descr->gen,
244 descr->rsvd, descr->dtype, descr->ext1, descr->btype);
245 }
246
247 /* Device state and helper functions */
248 #define VMXNET3_RX_RINGS_PER_QUEUE (2)
249
250 typedef struct {
251 Vmxnet3Ring tx_ring;
252 Vmxnet3Ring comp_ring;
253
254 uint8_t intr_idx;
255 hwaddr tx_stats_pa;
256 struct UPT1_TxStats txq_stats;
257 } Vmxnet3TxqDescr;
258
259 typedef struct {
260 Vmxnet3Ring rx_ring[VMXNET3_RX_RINGS_PER_QUEUE];
261 Vmxnet3Ring comp_ring;
262 uint8_t intr_idx;
263 hwaddr rx_stats_pa;
264 struct UPT1_RxStats rxq_stats;
265 } Vmxnet3RxqDescr;
266
267 typedef struct {
268 bool is_masked;
269 bool is_pending;
270 bool is_asserted;
271 } Vmxnet3IntState;
272
273 typedef struct {
274 PCIDevice parent_obj;
275 NICState *nic;
276 NICConf conf;
277 MemoryRegion bar0;
278 MemoryRegion bar1;
279 MemoryRegion msix_bar;
280
281 Vmxnet3RxqDescr rxq_descr[VMXNET3_DEVICE_MAX_RX_QUEUES];
282 Vmxnet3TxqDescr txq_descr[VMXNET3_DEVICE_MAX_TX_QUEUES];
283
284 /* Whether MSI-X support was installed successfully */
285 bool msix_used;
286 hwaddr drv_shmem;
287 hwaddr temp_shared_guest_driver_memory;
288
289 uint8_t txq_num;
290
291 /* This boolean tells whether RX packet being indicated has to */
292 /* be split into head and body chunks from different RX rings */
293 bool rx_packets_compound;
294
295 bool rx_vlan_stripping;
296 bool lro_supported;
297
298 uint8_t rxq_num;
299
300 /* Network MTU */
301 uint32_t mtu;
302
303 /* Maximum number of fragments for indicated TX packets */
304 uint32_t max_tx_frags;
305
306 /* Maximum number of fragments for indicated RX packets */
307 uint16_t max_rx_frags;
308
309 /* Index for events interrupt */
310 uint8_t event_int_idx;
311
312 /* Whether automatic interrupts masking enabled */
313 bool auto_int_masking;
314
315 bool peer_has_vhdr;
316
317 /* TX packets to QEMU interface */
318 struct NetTxPkt *tx_pkt;
319 uint32_t offload_mode;
320 uint32_t cso_or_gso_size;
321 uint16_t tci;
322 bool needs_vlan;
323
324 struct NetRxPkt *rx_pkt;
325
326 bool tx_sop;
327 bool skip_current_tx_pkt;
328
329 uint32_t device_active;
330 uint32_t last_command;
331
332 uint32_t link_status_and_speed;
333
334 Vmxnet3IntState interrupt_states[VMXNET3_MAX_INTRS];
335
336 uint32_t temp_mac; /* To store the low part first */
337
338 MACAddr perm_mac;
339 uint32_t vlan_table[VMXNET3_VFT_SIZE];
340 uint32_t rx_mode;
341 MACAddr *mcast_list;
342 uint32_t mcast_list_len;
343 uint32_t mcast_list_buff_size; /* needed for live migration. */
344
345 /* Compatibility flags for migration */
346 uint32_t compat_flags;
347 } VMXNET3State;
348
349 /* Interrupt management */
350
351 /*
352 * This function returns sign whether interrupt line is in asserted state
353 * This depends on the type of interrupt used. For INTX interrupt line will
354 * be asserted until explicit deassertion, for MSI(X) interrupt line will
355 * be deasserted automatically due to notification semantics of the MSI(X)
356 * interrupts
357 */
358 static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx)
359 {
360 PCIDevice *d = PCI_DEVICE(s);
361
362 if (s->msix_used && msix_enabled(d)) {
363 VMW_IRPRN("Sending MSI-X notification for vector %u", int_idx);
364 msix_notify(d, int_idx);
365 return false;
366 }
367 if (msi_enabled(d)) {
368 VMW_IRPRN("Sending MSI notification for vector %u", int_idx);
369 msi_notify(d, int_idx);
370 return false;
371 }
372
373 VMW_IRPRN("Asserting line for interrupt %u", int_idx);
374 pci_irq_assert(d);
375 return true;
376 }
377
378 static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx)
379 {
380 PCIDevice *d = PCI_DEVICE(s);
381
382 /*
383 * This function should never be called for MSI(X) interrupts
384 * because deassertion never required for message interrupts
385 */
386 assert(!s->msix_used || !msix_enabled(d));
387 /*
388 * This function should never be called for MSI(X) interrupts
389 * because deassertion never required for message interrupts
390 */
391 assert(!msi_enabled(d));
392
393 VMW_IRPRN("Deasserting line for interrupt %u", lidx);
394 pci_irq_deassert(d);
395 }
396
397 static void vmxnet3_update_interrupt_line_state(VMXNET3State *s, int lidx)
398 {
399 if (!s->interrupt_states[lidx].is_pending &&
400 s->interrupt_states[lidx].is_asserted) {
401 VMW_IRPRN("New interrupt line state for index %d is DOWN", lidx);
402 _vmxnet3_deassert_interrupt_line(s, lidx);
403 s->interrupt_states[lidx].is_asserted = false;
404 return;
405 }
406
407 if (s->interrupt_states[lidx].is_pending &&
408 !s->interrupt_states[lidx].is_masked &&
409 !s->interrupt_states[lidx].is_asserted) {
410 VMW_IRPRN("New interrupt line state for index %d is UP", lidx);
411 s->interrupt_states[lidx].is_asserted =
412 _vmxnet3_assert_interrupt_line(s, lidx);
413 s->interrupt_states[lidx].is_pending = false;
414 return;
415 }
416 }
417
418 static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx)
419 {
420 PCIDevice *d = PCI_DEVICE(s);
421 s->interrupt_states[lidx].is_pending = true;
422 vmxnet3_update_interrupt_line_state(s, lidx);
423
424 if (s->msix_used && msix_enabled(d) && s->auto_int_masking) {
425 goto do_automask;
426 }
427
428 if (msi_enabled(d) && s->auto_int_masking) {
429 goto do_automask;
430 }
431
432 return;
433
434 do_automask:
435 s->interrupt_states[lidx].is_masked = true;
436 vmxnet3_update_interrupt_line_state(s, lidx);
437 }
438
439 static bool vmxnet3_interrupt_asserted(VMXNET3State *s, int lidx)
440 {
441 return s->interrupt_states[lidx].is_asserted;
442 }
443
444 static void vmxnet3_clear_interrupt(VMXNET3State *s, int int_idx)
445 {
446 s->interrupt_states[int_idx].is_pending = false;
447 if (s->auto_int_masking) {
448 s->interrupt_states[int_idx].is_masked = true;
449 }
450 vmxnet3_update_interrupt_line_state(s, int_idx);
451 }
452
453 static void
454 vmxnet3_on_interrupt_mask_changed(VMXNET3State *s, int lidx, bool is_masked)
455 {
456 s->interrupt_states[lidx].is_masked = is_masked;
457 vmxnet3_update_interrupt_line_state(s, lidx);
458 }
459
460 static bool vmxnet3_verify_driver_magic(PCIDevice *d, hwaddr dshmem)
461 {
462 return (VMXNET3_READ_DRV_SHARED32(d, dshmem, magic) == VMXNET3_REV1_MAGIC);
463 }
464
465 #define VMXNET3_GET_BYTE(x, byte_num) (((x) >> (byte_num)*8) & 0xFF)
466 #define VMXNET3_MAKE_BYTE(byte_num, val) \
467 (((uint32_t)((val) & 0xFF)) << (byte_num)*8)
468
469 static void vmxnet3_set_variable_mac(VMXNET3State *s, uint32_t h, uint32_t l)
470 {
471 s->conf.macaddr.a[0] = VMXNET3_GET_BYTE(l, 0);
472 s->conf.macaddr.a[1] = VMXNET3_GET_BYTE(l, 1);
473 s->conf.macaddr.a[2] = VMXNET3_GET_BYTE(l, 2);
474 s->conf.macaddr.a[3] = VMXNET3_GET_BYTE(l, 3);
475 s->conf.macaddr.a[4] = VMXNET3_GET_BYTE(h, 0);
476 s->conf.macaddr.a[5] = VMXNET3_GET_BYTE(h, 1);
477
478 VMW_CFPRN("Variable MAC: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
479
480 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
481 }
482
483 static uint64_t vmxnet3_get_mac_low(MACAddr *addr)
484 {
485 return VMXNET3_MAKE_BYTE(0, addr->a[0]) |
486 VMXNET3_MAKE_BYTE(1, addr->a[1]) |
487 VMXNET3_MAKE_BYTE(2, addr->a[2]) |
488 VMXNET3_MAKE_BYTE(3, addr->a[3]);
489 }
490
491 static uint64_t vmxnet3_get_mac_high(MACAddr *addr)
492 {
493 return VMXNET3_MAKE_BYTE(0, addr->a[4]) |
494 VMXNET3_MAKE_BYTE(1, addr->a[5]);
495 }
496
497 static void
498 vmxnet3_inc_tx_consumption_counter(VMXNET3State *s, int qidx)
499 {
500 vmxnet3_ring_inc(&s->txq_descr[qidx].tx_ring);
501 }
502
503 static inline void
504 vmxnet3_inc_rx_consumption_counter(VMXNET3State *s, int qidx, int ridx)
505 {
506 vmxnet3_ring_inc(&s->rxq_descr[qidx].rx_ring[ridx]);
507 }
508
509 static inline void
510 vmxnet3_inc_tx_completion_counter(VMXNET3State *s, int qidx)
511 {
512 vmxnet3_ring_inc(&s->txq_descr[qidx].comp_ring);
513 }
514
515 static void
516 vmxnet3_inc_rx_completion_counter(VMXNET3State *s, int qidx)
517 {
518 vmxnet3_ring_inc(&s->rxq_descr[qidx].comp_ring);
519 }
520
521 static void
522 vmxnet3_dec_rx_completion_counter(VMXNET3State *s, int qidx)
523 {
524 vmxnet3_ring_dec(&s->rxq_descr[qidx].comp_ring);
525 }
526
527 static void vmxnet3_complete_packet(VMXNET3State *s, int qidx, uint32_t tx_ridx)
528 {
529 struct Vmxnet3_TxCompDesc txcq_descr;
530 PCIDevice *d = PCI_DEVICE(s);
531
532 VMXNET3_RING_DUMP(VMW_RIPRN, "TXC", qidx, &s->txq_descr[qidx].comp_ring);
533
534 txcq_descr.txdIdx = tx_ridx;
535 txcq_descr.gen = vmxnet3_ring_curr_gen(&s->txq_descr[qidx].comp_ring);
536
537 vmxnet3_ring_write_curr_cell(d, &s->txq_descr[qidx].comp_ring, &txcq_descr);
538
539 /* Flush changes in TX descriptor before changing the counter value */
540 smp_wmb();
541
542 vmxnet3_inc_tx_completion_counter(s, qidx);
543 vmxnet3_trigger_interrupt(s, s->txq_descr[qidx].intr_idx);
544 }
545
546 static bool
547 vmxnet3_setup_tx_offloads(VMXNET3State *s)
548 {
549 switch (s->offload_mode) {
550 case VMXNET3_OM_NONE:
551 net_tx_pkt_build_vheader(s->tx_pkt, false, false, 0);
552 break;
553
554 case VMXNET3_OM_CSUM:
555 net_tx_pkt_build_vheader(s->tx_pkt, false, true, 0);
556 VMW_PKPRN("L4 CSO requested\n");
557 break;
558
559 case VMXNET3_OM_TSO:
560 net_tx_pkt_build_vheader(s->tx_pkt, true, true,
561 s->cso_or_gso_size);
562 net_tx_pkt_update_ip_checksums(s->tx_pkt);
563 VMW_PKPRN("GSO offload requested.");
564 break;
565
566 default:
567 g_assert_not_reached();
568 return false;
569 }
570
571 return true;
572 }
573
574 static void
575 vmxnet3_tx_retrieve_metadata(VMXNET3State *s,
576 const struct Vmxnet3_TxDesc *txd)
577 {
578 s->offload_mode = txd->om;
579 s->cso_or_gso_size = txd->msscof;
580 s->tci = txd->tci;
581 s->needs_vlan = txd->ti;
582 }
583
584 typedef enum {
585 VMXNET3_PKT_STATUS_OK,
586 VMXNET3_PKT_STATUS_ERROR,
587 VMXNET3_PKT_STATUS_DISCARD,/* only for tx */
588 VMXNET3_PKT_STATUS_OUT_OF_BUF /* only for rx */
589 } Vmxnet3PktStatus;
590
591 static void
592 vmxnet3_on_tx_done_update_stats(VMXNET3State *s, int qidx,
593 Vmxnet3PktStatus status)
594 {
595 size_t tot_len = net_tx_pkt_get_total_len(s->tx_pkt);
596 struct UPT1_TxStats *stats = &s->txq_descr[qidx].txq_stats;
597
598 switch (status) {
599 case VMXNET3_PKT_STATUS_OK:
600 switch (net_tx_pkt_get_packet_type(s->tx_pkt)) {
601 case ETH_PKT_BCAST:
602 stats->bcastPktsTxOK++;
603 stats->bcastBytesTxOK += tot_len;
604 break;
605 case ETH_PKT_MCAST:
606 stats->mcastPktsTxOK++;
607 stats->mcastBytesTxOK += tot_len;
608 break;
609 case ETH_PKT_UCAST:
610 stats->ucastPktsTxOK++;
611 stats->ucastBytesTxOK += tot_len;
612 break;
613 default:
614 g_assert_not_reached();
615 }
616
617 if (s->offload_mode == VMXNET3_OM_TSO) {
618 /*
619 * According to VMWARE headers this statistic is a number
620 * of packets after segmentation but since we don't have
621 * this information in QEMU model, the best we can do is to
622 * provide number of non-segmented packets
623 */
624 stats->TSOPktsTxOK++;
625 stats->TSOBytesTxOK += tot_len;
626 }
627 break;
628
629 case VMXNET3_PKT_STATUS_DISCARD:
630 stats->pktsTxDiscard++;
631 break;
632
633 case VMXNET3_PKT_STATUS_ERROR:
634 stats->pktsTxError++;
635 break;
636
637 default:
638 g_assert_not_reached();
639 }
640 }
641
642 static void
643 vmxnet3_on_rx_done_update_stats(VMXNET3State *s,
644 int qidx,
645 Vmxnet3PktStatus status)
646 {
647 struct UPT1_RxStats *stats = &s->rxq_descr[qidx].rxq_stats;
648 size_t tot_len = net_rx_pkt_get_total_len(s->rx_pkt);
649
650 switch (status) {
651 case VMXNET3_PKT_STATUS_OUT_OF_BUF:
652 stats->pktsRxOutOfBuf++;
653 break;
654
655 case VMXNET3_PKT_STATUS_ERROR:
656 stats->pktsRxError++;
657 break;
658 case VMXNET3_PKT_STATUS_OK:
659 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
660 case ETH_PKT_BCAST:
661 stats->bcastPktsRxOK++;
662 stats->bcastBytesRxOK += tot_len;
663 break;
664 case ETH_PKT_MCAST:
665 stats->mcastPktsRxOK++;
666 stats->mcastBytesRxOK += tot_len;
667 break;
668 case ETH_PKT_UCAST:
669 stats->ucastPktsRxOK++;
670 stats->ucastBytesRxOK += tot_len;
671 break;
672 default:
673 g_assert_not_reached();
674 }
675
676 if (tot_len > s->mtu) {
677 stats->LROPktsRxOK++;
678 stats->LROBytesRxOK += tot_len;
679 }
680 break;
681 default:
682 g_assert_not_reached();
683 }
684 }
685
686 static inline bool
687 vmxnet3_pop_next_tx_descr(VMXNET3State *s,
688 int qidx,
689 struct Vmxnet3_TxDesc *txd,
690 uint32_t *descr_idx)
691 {
692 Vmxnet3Ring *ring = &s->txq_descr[qidx].tx_ring;
693 PCIDevice *d = PCI_DEVICE(s);
694
695 vmxnet3_ring_read_curr_cell(d, ring, txd);
696 if (txd->gen == vmxnet3_ring_curr_gen(ring)) {
697 /* Only read after generation field verification */
698 smp_rmb();
699 /* Re-read to be sure we got the latest version */
700 vmxnet3_ring_read_curr_cell(d, ring, txd);
701 VMXNET3_RING_DUMP(VMW_RIPRN, "TX", qidx, ring);
702 *descr_idx = vmxnet3_ring_curr_cell_idx(ring);
703 vmxnet3_inc_tx_consumption_counter(s, qidx);
704 return true;
705 }
706
707 return false;
708 }
709
710 static bool
711 vmxnet3_send_packet(VMXNET3State *s, uint32_t qidx)
712 {
713 Vmxnet3PktStatus status = VMXNET3_PKT_STATUS_OK;
714
715 if (!vmxnet3_setup_tx_offloads(s)) {
716 status = VMXNET3_PKT_STATUS_ERROR;
717 goto func_exit;
718 }
719
720 /* debug prints */
721 vmxnet3_dump_virt_hdr(net_tx_pkt_get_vhdr(s->tx_pkt));
722 net_tx_pkt_dump(s->tx_pkt);
723
724 if (!net_tx_pkt_send(s->tx_pkt, qemu_get_queue(s->nic))) {
725 status = VMXNET3_PKT_STATUS_DISCARD;
726 goto func_exit;
727 }
728
729 func_exit:
730 vmxnet3_on_tx_done_update_stats(s, qidx, status);
731 return (status == VMXNET3_PKT_STATUS_OK);
732 }
733
734 static void vmxnet3_process_tx_queue(VMXNET3State *s, int qidx)
735 {
736 struct Vmxnet3_TxDesc txd;
737 uint32_t txd_idx;
738 uint32_t data_len;
739 hwaddr data_pa;
740
741 for (;;) {
742 if (!vmxnet3_pop_next_tx_descr(s, qidx, &txd, &txd_idx)) {
743 break;
744 }
745
746 vmxnet3_dump_tx_descr(&txd);
747
748 if (!s->skip_current_tx_pkt) {
749 data_len = (txd.len > 0) ? txd.len : VMXNET3_MAX_TX_BUF_SIZE;
750 data_pa = le64_to_cpu(txd.addr);
751
752 if (!net_tx_pkt_add_raw_fragment(s->tx_pkt,
753 data_pa,
754 data_len)) {
755 s->skip_current_tx_pkt = true;
756 }
757 }
758
759 if (s->tx_sop) {
760 vmxnet3_tx_retrieve_metadata(s, &txd);
761 s->tx_sop = false;
762 }
763
764 if (txd.eop) {
765 if (!s->skip_current_tx_pkt && net_tx_pkt_parse(s->tx_pkt)) {
766 if (s->needs_vlan) {
767 net_tx_pkt_setup_vlan_header(s->tx_pkt, s->tci);
768 }
769
770 vmxnet3_send_packet(s, qidx);
771 } else {
772 vmxnet3_on_tx_done_update_stats(s, qidx,
773 VMXNET3_PKT_STATUS_ERROR);
774 }
775
776 vmxnet3_complete_packet(s, qidx, txd_idx);
777 s->tx_sop = true;
778 s->skip_current_tx_pkt = false;
779 net_tx_pkt_reset(s->tx_pkt);
780 }
781 }
782 }
783
784 static inline void
785 vmxnet3_read_next_rx_descr(VMXNET3State *s, int qidx, int ridx,
786 struct Vmxnet3_RxDesc *dbuf, uint32_t *didx)
787 {
788 PCIDevice *d = PCI_DEVICE(s);
789
790 Vmxnet3Ring *ring = &s->rxq_descr[qidx].rx_ring[ridx];
791 *didx = vmxnet3_ring_curr_cell_idx(ring);
792 vmxnet3_ring_read_curr_cell(d, ring, dbuf);
793 }
794
795 static inline uint8_t
796 vmxnet3_get_rx_ring_gen(VMXNET3State *s, int qidx, int ridx)
797 {
798 return s->rxq_descr[qidx].rx_ring[ridx].gen;
799 }
800
801 static inline hwaddr
802 vmxnet3_pop_rxc_descr(VMXNET3State *s, int qidx, uint32_t *descr_gen)
803 {
804 uint8_t ring_gen;
805 struct Vmxnet3_RxCompDesc rxcd;
806
807 hwaddr daddr =
808 vmxnet3_ring_curr_cell_pa(&s->rxq_descr[qidx].comp_ring);
809
810 pci_dma_read(PCI_DEVICE(s),
811 daddr, &rxcd, sizeof(struct Vmxnet3_RxCompDesc));
812 ring_gen = vmxnet3_ring_curr_gen(&s->rxq_descr[qidx].comp_ring);
813
814 if (rxcd.gen != ring_gen) {
815 *descr_gen = ring_gen;
816 vmxnet3_inc_rx_completion_counter(s, qidx);
817 return daddr;
818 }
819
820 return 0;
821 }
822
823 static inline void
824 vmxnet3_revert_rxc_descr(VMXNET3State *s, int qidx)
825 {
826 vmxnet3_dec_rx_completion_counter(s, qidx);
827 }
828
829 #define RXQ_IDX (0)
830 #define RX_HEAD_BODY_RING (0)
831 #define RX_BODY_ONLY_RING (1)
832
833 static bool
834 vmxnet3_get_next_head_rx_descr(VMXNET3State *s,
835 struct Vmxnet3_RxDesc *descr_buf,
836 uint32_t *descr_idx,
837 uint32_t *ridx)
838 {
839 for (;;) {
840 uint32_t ring_gen;
841 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
842 descr_buf, descr_idx);
843
844 /* If no more free descriptors - return */
845 ring_gen = vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING);
846 if (descr_buf->gen != ring_gen) {
847 return false;
848 }
849
850 /* Only read after generation field verification */
851 smp_rmb();
852 /* Re-read to be sure we got the latest version */
853 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING,
854 descr_buf, descr_idx);
855
856 /* Mark current descriptor as used/skipped */
857 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
858
859 /* If this is what we are looking for - return */
860 if (descr_buf->btype == VMXNET3_RXD_BTYPE_HEAD) {
861 *ridx = RX_HEAD_BODY_RING;
862 return true;
863 }
864 }
865 }
866
867 static bool
868 vmxnet3_get_next_body_rx_descr(VMXNET3State *s,
869 struct Vmxnet3_RxDesc *d,
870 uint32_t *didx,
871 uint32_t *ridx)
872 {
873 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
874
875 /* Try to find corresponding descriptor in head/body ring */
876 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_HEAD_BODY_RING)) {
877 /* Only read after generation field verification */
878 smp_rmb();
879 /* Re-read to be sure we got the latest version */
880 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_HEAD_BODY_RING, d, didx);
881 if (d->btype == VMXNET3_RXD_BTYPE_BODY) {
882 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_HEAD_BODY_RING);
883 *ridx = RX_HEAD_BODY_RING;
884 return true;
885 }
886 }
887
888 /*
889 * If there is no free descriptors on head/body ring or next free
890 * descriptor is a head descriptor switch to body only ring
891 */
892 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
893
894 /* If no more free descriptors - return */
895 if (d->gen == vmxnet3_get_rx_ring_gen(s, RXQ_IDX, RX_BODY_ONLY_RING)) {
896 /* Only read after generation field verification */
897 smp_rmb();
898 /* Re-read to be sure we got the latest version */
899 vmxnet3_read_next_rx_descr(s, RXQ_IDX, RX_BODY_ONLY_RING, d, didx);
900 assert(d->btype == VMXNET3_RXD_BTYPE_BODY);
901 *ridx = RX_BODY_ONLY_RING;
902 vmxnet3_inc_rx_consumption_counter(s, RXQ_IDX, RX_BODY_ONLY_RING);
903 return true;
904 }
905
906 return false;
907 }
908
909 static inline bool
910 vmxnet3_get_next_rx_descr(VMXNET3State *s, bool is_head,
911 struct Vmxnet3_RxDesc *descr_buf,
912 uint32_t *descr_idx,
913 uint32_t *ridx)
914 {
915 if (is_head || !s->rx_packets_compound) {
916 return vmxnet3_get_next_head_rx_descr(s, descr_buf, descr_idx, ridx);
917 } else {
918 return vmxnet3_get_next_body_rx_descr(s, descr_buf, descr_idx, ridx);
919 }
920 }
921
922 /* In case packet was csum offloaded (either NEEDS_CSUM or DATA_VALID),
923 * the implementation always passes an RxCompDesc with a "Checksum
924 * calculated and found correct" to the OS (cnc=0 and tuc=1, see
925 * vmxnet3_rx_update_descr). This emulates the observed ESXi behavior.
926 *
927 * Therefore, if packet has the NEEDS_CSUM set, we must calculate
928 * and place a fully computed checksum into the tcp/udp header.
929 * Otherwise, the OS driver will receive a checksum-correct indication
930 * (CHECKSUM_UNNECESSARY), but with the actual tcp/udp checksum field
931 * having just the pseudo header csum value.
932 *
933 * While this is not a problem if packet is destined for local delivery,
934 * in the case the host OS performs forwarding, it will forward an
935 * incorrectly checksummed packet.
936 */
937 static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt,
938 const void *pkt_data,
939 size_t pkt_len)
940 {
941 struct virtio_net_hdr *vhdr;
942 bool isip4, isip6, istcp, isudp;
943 uint8_t *data;
944 int len;
945
946 if (!net_rx_pkt_has_virt_hdr(pkt)) {
947 return;
948 }
949
950 vhdr = net_rx_pkt_get_vhdr(pkt);
951 if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) {
952 return;
953 }
954
955 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
956 if (!(isip4 || isip6) || !(istcp || isudp)) {
957 return;
958 }
959
960 vmxnet3_dump_virt_hdr(vhdr);
961
962 /* Validate packet len: csum_start + scum_offset + length of csum field */
963 if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
964 VMW_PKPRN("packet len:%zu < csum_start(%d) + csum_offset(%d) + 2, "
965 "cannot calculate checksum",
966 pkt_len, vhdr->csum_start, vhdr->csum_offset);
967 return;
968 }
969
970 data = (uint8_t *)pkt_data + vhdr->csum_start;
971 len = pkt_len - vhdr->csum_start;
972 /* Put the checksum obtained into the packet */
973 stw_be_p(data + vhdr->csum_offset, net_raw_checksum(data, len));
974
975 vhdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM;
976 vhdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID;
977 }
978
979 static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt,
980 struct Vmxnet3_RxCompDesc *rxcd)
981 {
982 int csum_ok, is_gso;
983 bool isip4, isip6, istcp, isudp;
984 struct virtio_net_hdr *vhdr;
985 uint8_t offload_type;
986
987 if (net_rx_pkt_is_vlan_stripped(pkt)) {
988 rxcd->ts = 1;
989 rxcd->tci = net_rx_pkt_get_vlan_tag(pkt);
990 }
991
992 if (!net_rx_pkt_has_virt_hdr(pkt)) {
993 goto nocsum;
994 }
995
996 vhdr = net_rx_pkt_get_vhdr(pkt);
997 /*
998 * Checksum is valid when lower level tell so or when lower level
999 * requires checksum offload telling that packet produced/bridged
1000 * locally and did travel over network after last checksum calculation
1001 * or production
1002 */
1003 csum_ok = VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_DATA_VALID) ||
1004 VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM);
1005
1006 offload_type = vhdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
1007 is_gso = (offload_type != VIRTIO_NET_HDR_GSO_NONE) ? 1 : 0;
1008
1009 if (!csum_ok && !is_gso) {
1010 goto nocsum;
1011 }
1012
1013 net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp);
1014 if ((!istcp && !isudp) || (!isip4 && !isip6)) {
1015 goto nocsum;
1016 }
1017
1018 rxcd->cnc = 0;
1019 rxcd->v4 = isip4 ? 1 : 0;
1020 rxcd->v6 = isip6 ? 1 : 0;
1021 rxcd->tcp = istcp ? 1 : 0;
1022 rxcd->udp = isudp ? 1 : 0;
1023 rxcd->fcs = rxcd->tuc = rxcd->ipc = 1;
1024 return;
1025
1026 nocsum:
1027 rxcd->cnc = 1;
1028 return;
1029 }
1030
1031 static void
1032 vmxnet3_pci_dma_writev(PCIDevice *pci_dev,
1033 const struct iovec *iov,
1034 size_t start_iov_off,
1035 hwaddr target_addr,
1036 size_t bytes_to_copy)
1037 {
1038 size_t curr_off = 0;
1039 size_t copied = 0;
1040
1041 while (bytes_to_copy) {
1042 if (start_iov_off < (curr_off + iov->iov_len)) {
1043 size_t chunk_len =
1044 MIN((curr_off + iov->iov_len) - start_iov_off, bytes_to_copy);
1045
1046 pci_dma_write(pci_dev, target_addr + copied,
1047 iov->iov_base + start_iov_off - curr_off,
1048 chunk_len);
1049
1050 copied += chunk_len;
1051 start_iov_off += chunk_len;
1052 curr_off = start_iov_off;
1053 bytes_to_copy -= chunk_len;
1054 } else {
1055 curr_off += iov->iov_len;
1056 }
1057 iov++;
1058 }
1059 }
1060
1061 static bool
1062 vmxnet3_indicate_packet(VMXNET3State *s)
1063 {
1064 struct Vmxnet3_RxDesc rxd;
1065 PCIDevice *d = PCI_DEVICE(s);
1066 bool is_head = true;
1067 uint32_t rxd_idx;
1068 uint32_t rx_ridx = 0;
1069
1070 struct Vmxnet3_RxCompDesc rxcd;
1071 uint32_t new_rxcd_gen = VMXNET3_INIT_GEN;
1072 hwaddr new_rxcd_pa = 0;
1073 hwaddr ready_rxcd_pa = 0;
1074 struct iovec *data = net_rx_pkt_get_iovec(s->rx_pkt);
1075 size_t bytes_copied = 0;
1076 size_t bytes_left = net_rx_pkt_get_total_len(s->rx_pkt);
1077 uint16_t num_frags = 0;
1078 size_t chunk_size;
1079
1080 net_rx_pkt_dump(s->rx_pkt);
1081
1082 while (bytes_left > 0) {
1083
1084 /* cannot add more frags to packet */
1085 if (num_frags == s->max_rx_frags) {
1086 break;
1087 }
1088
1089 new_rxcd_pa = vmxnet3_pop_rxc_descr(s, RXQ_IDX, &new_rxcd_gen);
1090 if (!new_rxcd_pa) {
1091 break;
1092 }
1093
1094 if (!vmxnet3_get_next_rx_descr(s, is_head, &rxd, &rxd_idx, &rx_ridx)) {
1095 break;
1096 }
1097
1098 chunk_size = MIN(bytes_left, rxd.len);
1099 vmxnet3_pci_dma_writev(d, data, bytes_copied,
1100 le64_to_cpu(rxd.addr), chunk_size);
1101 bytes_copied += chunk_size;
1102 bytes_left -= chunk_size;
1103
1104 vmxnet3_dump_rx_descr(&rxd);
1105
1106 if (ready_rxcd_pa != 0) {
1107 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1108 }
1109
1110 memset(&rxcd, 0, sizeof(struct Vmxnet3_RxCompDesc));
1111 rxcd.rxdIdx = rxd_idx;
1112 rxcd.len = chunk_size;
1113 rxcd.sop = is_head;
1114 rxcd.gen = new_rxcd_gen;
1115 rxcd.rqID = RXQ_IDX + rx_ridx * s->rxq_num;
1116
1117 if (bytes_left == 0) {
1118 vmxnet3_rx_update_descr(s->rx_pkt, &rxcd);
1119 }
1120
1121 VMW_RIPRN("RX Completion descriptor: rxRing: %lu rxIdx %lu len %lu "
1122 "sop %d csum_correct %lu",
1123 (unsigned long) rx_ridx,
1124 (unsigned long) rxcd.rxdIdx,
1125 (unsigned long) rxcd.len,
1126 (int) rxcd.sop,
1127 (unsigned long) rxcd.tuc);
1128
1129 is_head = false;
1130 ready_rxcd_pa = new_rxcd_pa;
1131 new_rxcd_pa = 0;
1132 num_frags++;
1133 }
1134
1135 if (ready_rxcd_pa != 0) {
1136 rxcd.eop = 1;
1137 rxcd.err = (bytes_left != 0);
1138
1139 pci_dma_write(d, ready_rxcd_pa, &rxcd, sizeof(rxcd));
1140
1141 /* Flush RX descriptor changes */
1142 smp_wmb();
1143 }
1144
1145 if (new_rxcd_pa != 0) {
1146 vmxnet3_revert_rxc_descr(s, RXQ_IDX);
1147 }
1148
1149 vmxnet3_trigger_interrupt(s, s->rxq_descr[RXQ_IDX].intr_idx);
1150
1151 if (bytes_left == 0) {
1152 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_OK);
1153 return true;
1154 } else if (num_frags == s->max_rx_frags) {
1155 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX, VMXNET3_PKT_STATUS_ERROR);
1156 return false;
1157 } else {
1158 vmxnet3_on_rx_done_update_stats(s, RXQ_IDX,
1159 VMXNET3_PKT_STATUS_OUT_OF_BUF);
1160 return false;
1161 }
1162 }
1163
1164 static void
1165 vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
1166 uint64_t val, unsigned size)
1167 {
1168 VMXNET3State *s = opaque;
1169
1170 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_TXPROD,
1171 VMXNET3_DEVICE_MAX_TX_QUEUES, VMXNET3_REG_ALIGN)) {
1172 int tx_queue_idx =
1173 VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
1174 VMXNET3_REG_ALIGN);
1175 assert(tx_queue_idx <= s->txq_num);
1176 vmxnet3_process_tx_queue(s, tx_queue_idx);
1177 return;
1178 }
1179
1180 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1181 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1182 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1183 VMXNET3_REG_ALIGN);
1184
1185 VMW_CBPRN("Interrupt mask for line %d written: 0x%" PRIx64, l, val);
1186
1187 vmxnet3_on_interrupt_mask_changed(s, l, val);
1188 return;
1189 }
1190
1191 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD,
1192 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN) ||
1193 VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_RXPROD2,
1194 VMXNET3_DEVICE_MAX_RX_QUEUES, VMXNET3_REG_ALIGN)) {
1195 return;
1196 }
1197
1198 VMW_WRPRN("BAR0 unknown write [%" PRIx64 "] = %" PRIx64 ", size %d",
1199 (uint64_t) addr, val, size);
1200 }
1201
1202 static uint64_t
1203 vmxnet3_io_bar0_read(void *opaque, hwaddr addr, unsigned size)
1204 {
1205 VMXNET3State *s = opaque;
1206
1207 if (VMW_IS_MULTIREG_ADDR(addr, VMXNET3_REG_IMR,
1208 VMXNET3_MAX_INTRS, VMXNET3_REG_ALIGN)) {
1209 int l = VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_IMR,
1210 VMXNET3_REG_ALIGN);
1211 return s->interrupt_states[l].is_masked;
1212 }
1213
1214 VMW_CBPRN("BAR0 unknown read [%" PRIx64 "], size %d", addr, size);
1215 return 0;
1216 }
1217
1218 static void vmxnet3_reset_interrupt_states(VMXNET3State *s)
1219 {
1220 int i;
1221 for (i = 0; i < ARRAY_SIZE(s->interrupt_states); i++) {
1222 s->interrupt_states[i].is_asserted = false;
1223 s->interrupt_states[i].is_pending = false;
1224 s->interrupt_states[i].is_masked = true;
1225 }
1226 }
1227
1228 static void vmxnet3_reset_mac(VMXNET3State *s)
1229 {
1230 memcpy(&s->conf.macaddr.a, &s->perm_mac.a, sizeof(s->perm_mac.a));
1231 VMW_CFPRN("MAC address set to: " MAC_FMT, MAC_ARG(s->conf.macaddr.a));
1232 }
1233
1234 static void vmxnet3_deactivate_device(VMXNET3State *s)
1235 {
1236 if (s->device_active) {
1237 VMW_CBPRN("Deactivating vmxnet3...");
1238 net_tx_pkt_reset(s->tx_pkt);
1239 net_tx_pkt_uninit(s->tx_pkt);
1240 net_rx_pkt_uninit(s->rx_pkt);
1241 s->device_active = false;
1242 }
1243 }
1244
1245 static void vmxnet3_reset(VMXNET3State *s)
1246 {
1247 VMW_CBPRN("Resetting vmxnet3...");
1248
1249 vmxnet3_deactivate_device(s);
1250 vmxnet3_reset_interrupt_states(s);
1251 s->drv_shmem = 0;
1252 s->tx_sop = true;
1253 s->skip_current_tx_pkt = false;
1254 }
1255
1256 static void vmxnet3_update_rx_mode(VMXNET3State *s)
1257 {
1258 PCIDevice *d = PCI_DEVICE(s);
1259
1260 s->rx_mode = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1261 devRead.rxFilterConf.rxMode);
1262 VMW_CFPRN("RX mode: 0x%08X", s->rx_mode);
1263 }
1264
1265 static void vmxnet3_update_vlan_filters(VMXNET3State *s)
1266 {
1267 int i;
1268 PCIDevice *d = PCI_DEVICE(s);
1269
1270 /* Copy configuration from shared memory */
1271 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem,
1272 devRead.rxFilterConf.vfTable,
1273 s->vlan_table,
1274 sizeof(s->vlan_table));
1275
1276 /* Invert byte order when needed */
1277 for (i = 0; i < ARRAY_SIZE(s->vlan_table); i++) {
1278 s->vlan_table[i] = le32_to_cpu(s->vlan_table[i]);
1279 }
1280
1281 /* Dump configuration for debugging purposes */
1282 VMW_CFPRN("Configured VLANs:");
1283 for (i = 0; i < sizeof(s->vlan_table) * 8; i++) {
1284 if (VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, i)) {
1285 VMW_CFPRN("\tVLAN %d is present", i);
1286 }
1287 }
1288 }
1289
1290 static void vmxnet3_update_mcast_filters(VMXNET3State *s)
1291 {
1292 PCIDevice *d = PCI_DEVICE(s);
1293
1294 uint16_t list_bytes =
1295 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem,
1296 devRead.rxFilterConf.mfTableLen);
1297
1298 s->mcast_list_len = list_bytes / sizeof(s->mcast_list[0]);
1299
1300 s->mcast_list = g_realloc(s->mcast_list, list_bytes);
1301 if (!s->mcast_list) {
1302 if (s->mcast_list_len == 0) {
1303 VMW_CFPRN("Current multicast list is empty");
1304 } else {
1305 VMW_ERPRN("Failed to allocate multicast list of %d elements",
1306 s->mcast_list_len);
1307 }
1308 s->mcast_list_len = 0;
1309 } else {
1310 int i;
1311 hwaddr mcast_list_pa =
1312 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem,
1313 devRead.rxFilterConf.mfTablePA);
1314
1315 pci_dma_read(d, mcast_list_pa, s->mcast_list, list_bytes);
1316
1317 VMW_CFPRN("Current multicast list len is %d:", s->mcast_list_len);
1318 for (i = 0; i < s->mcast_list_len; i++) {
1319 VMW_CFPRN("\t" MAC_FMT, MAC_ARG(s->mcast_list[i].a));
1320 }
1321 }
1322 }
1323
1324 static void vmxnet3_setup_rx_filtering(VMXNET3State *s)
1325 {
1326 vmxnet3_update_rx_mode(s);
1327 vmxnet3_update_vlan_filters(s);
1328 vmxnet3_update_mcast_filters(s);
1329 }
1330
1331 static uint32_t vmxnet3_get_interrupt_config(VMXNET3State *s)
1332 {
1333 uint32_t interrupt_mode = VMXNET3_IT_AUTO | (VMXNET3_IMM_AUTO << 2);
1334 VMW_CFPRN("Interrupt config is 0x%X", interrupt_mode);
1335 return interrupt_mode;
1336 }
1337
1338 static void vmxnet3_fill_stats(VMXNET3State *s)
1339 {
1340 int i;
1341 PCIDevice *d = PCI_DEVICE(s);
1342
1343 if (!s->device_active)
1344 return;
1345
1346 for (i = 0; i < s->txq_num; i++) {
1347 pci_dma_write(d,
1348 s->txq_descr[i].tx_stats_pa,
1349 &s->txq_descr[i].txq_stats,
1350 sizeof(s->txq_descr[i].txq_stats));
1351 }
1352
1353 for (i = 0; i < s->rxq_num; i++) {
1354 pci_dma_write(d,
1355 s->rxq_descr[i].rx_stats_pa,
1356 &s->rxq_descr[i].rxq_stats,
1357 sizeof(s->rxq_descr[i].rxq_stats));
1358 }
1359 }
1360
1361 static void vmxnet3_adjust_by_guest_type(VMXNET3State *s)
1362 {
1363 struct Vmxnet3_GOSInfo gos;
1364 PCIDevice *d = PCI_DEVICE(s);
1365
1366 VMXNET3_READ_DRV_SHARED(d, s->drv_shmem, devRead.misc.driverInfo.gos,
1367 &gos, sizeof(gos));
1368 s->rx_packets_compound =
1369 (gos.gosType == VMXNET3_GOS_TYPE_WIN) ? false : true;
1370
1371 VMW_CFPRN("Guest type specifics: RXCOMPOUND: %d", s->rx_packets_compound);
1372 }
1373
1374 static void
1375 vmxnet3_dump_conf_descr(const char *name,
1376 struct Vmxnet3_VariableLenConfDesc *pm_descr)
1377 {
1378 VMW_CFPRN("%s descriptor dump: Version %u, Length %u",
1379 name, pm_descr->confVer, pm_descr->confLen);
1380
1381 };
1382
1383 static void vmxnet3_update_pm_state(VMXNET3State *s)
1384 {
1385 struct Vmxnet3_VariableLenConfDesc pm_descr;
1386 PCIDevice *d = PCI_DEVICE(s);
1387
1388 pm_descr.confLen =
1389 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confLen);
1390 pm_descr.confVer =
1391 VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.pmConfDesc.confVer);
1392 pm_descr.confPA =
1393 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.pmConfDesc.confPA);
1394
1395 vmxnet3_dump_conf_descr("PM State", &pm_descr);
1396 }
1397
1398 static void vmxnet3_update_features(VMXNET3State *s)
1399 {
1400 uint32_t guest_features;
1401 int rxcso_supported;
1402 PCIDevice *d = PCI_DEVICE(s);
1403
1404 guest_features = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem,
1405 devRead.misc.uptFeatures);
1406
1407 rxcso_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXCSUM);
1408 s->rx_vlan_stripping = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_RXVLAN);
1409 s->lro_supported = VMXNET_FLAG_IS_SET(guest_features, UPT1_F_LRO);
1410
1411 VMW_CFPRN("Features configuration: LRO: %d, RXCSUM: %d, VLANSTRIP: %d",
1412 s->lro_supported, rxcso_supported,
1413 s->rx_vlan_stripping);
1414 if (s->peer_has_vhdr) {
1415 qemu_set_offload(qemu_get_queue(s->nic)->peer,
1416 rxcso_supported,
1417 s->lro_supported,
1418 s->lro_supported,
1419 0,
1420 0);
1421 }
1422 }
1423
1424 static bool vmxnet3_verify_intx(VMXNET3State *s, int intx)
1425 {
1426 return s->msix_used || msi_enabled(PCI_DEVICE(s))
1427 || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1;
1428 }
1429
1430 static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx)
1431 {
1432 int max_ints = is_msix ? VMXNET3_MAX_INTRS : VMXNET3_MAX_NMSIX_INTRS;
1433 if (idx >= max_ints) {
1434 hw_error("Bad interrupt index: %d\n", idx);
1435 }
1436 }
1437
1438 static void vmxnet3_validate_interrupts(VMXNET3State *s)
1439 {
1440 int i;
1441
1442 VMW_CFPRN("Verifying event interrupt index (%d)", s->event_int_idx);
1443 vmxnet3_validate_interrupt_idx(s->msix_used, s->event_int_idx);
1444
1445 for (i = 0; i < s->txq_num; i++) {
1446 int idx = s->txq_descr[i].intr_idx;
1447 VMW_CFPRN("Verifying TX queue %d interrupt index (%d)", i, idx);
1448 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1449 }
1450
1451 for (i = 0; i < s->rxq_num; i++) {
1452 int idx = s->rxq_descr[i].intr_idx;
1453 VMW_CFPRN("Verifying RX queue %d interrupt index (%d)", i, idx);
1454 vmxnet3_validate_interrupt_idx(s->msix_used, idx);
1455 }
1456 }
1457
1458 static void vmxnet3_validate_queues(VMXNET3State *s)
1459 {
1460 /*
1461 * txq_num and rxq_num are total number of queues
1462 * configured by guest. These numbers must not
1463 * exceed corresponding maximal values.
1464 */
1465
1466 if (s->txq_num > VMXNET3_DEVICE_MAX_TX_QUEUES) {
1467 hw_error("Bad TX queues number: %d\n", s->txq_num);
1468 }
1469
1470 if (s->rxq_num > VMXNET3_DEVICE_MAX_RX_QUEUES) {
1471 hw_error("Bad RX queues number: %d\n", s->rxq_num);
1472 }
1473 }
1474
1475 static void vmxnet3_activate_device(VMXNET3State *s)
1476 {
1477 int i;
1478 static const uint32_t VMXNET3_DEF_TX_THRESHOLD = 1;
1479 PCIDevice *d = PCI_DEVICE(s);
1480 hwaddr qdescr_table_pa;
1481 uint64_t pa;
1482 uint32_t size;
1483
1484 /* Verify configuration consistency */
1485 if (!vmxnet3_verify_driver_magic(d, s->drv_shmem)) {
1486 VMW_ERPRN("Device configuration received from driver is invalid");
1487 return;
1488 }
1489
1490 /* Verify if device is active */
1491 if (s->device_active) {
1492 VMW_CFPRN("Vmxnet3 device is active");
1493 return;
1494 }
1495
1496 vmxnet3_adjust_by_guest_type(s);
1497 vmxnet3_update_features(s);
1498 vmxnet3_update_pm_state(s);
1499 vmxnet3_setup_rx_filtering(s);
1500 /* Cache fields from shared memory */
1501 s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
1502 VMW_CFPRN("MTU is %u", s->mtu);
1503
1504 s->max_rx_frags =
1505 VMXNET3_READ_DRV_SHARED16(d, s->drv_shmem, devRead.misc.maxNumRxSG);
1506
1507 if (s->max_rx_frags == 0) {
1508 s->max_rx_frags = 1;
1509 }
1510
1511 VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
1512
1513 s->event_int_idx =
1514 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.eventIntrIdx);
1515 assert(vmxnet3_verify_intx(s, s->event_int_idx));
1516 VMW_CFPRN("Events interrupt line is %u", s->event_int_idx);
1517
1518 s->auto_int_masking =
1519 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.intrConf.autoMask);
1520 VMW_CFPRN("Automatic interrupt masking is %d", (int)s->auto_int_masking);
1521
1522 s->txq_num =
1523 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numTxQueues);
1524 s->rxq_num =
1525 VMXNET3_READ_DRV_SHARED8(d, s->drv_shmem, devRead.misc.numRxQueues);
1526
1527 VMW_CFPRN("Number of TX/RX queues %u/%u", s->txq_num, s->rxq_num);
1528 vmxnet3_validate_queues(s);
1529
1530 qdescr_table_pa =
1531 VMXNET3_READ_DRV_SHARED64(d, s->drv_shmem, devRead.misc.queueDescPA);
1532 VMW_CFPRN("TX queues descriptors table is at 0x%" PRIx64, qdescr_table_pa);
1533
1534 /*
1535 * Worst-case scenario is a packet that holds all TX rings space so
1536 * we calculate total size of all TX rings for max TX fragments number
1537 */
1538 s->max_tx_frags = 0;
1539
1540 /* TX queues */
1541 for (i = 0; i < s->txq_num; i++) {
1542 hwaddr qdescr_pa =
1543 qdescr_table_pa + i * sizeof(struct Vmxnet3_TxQueueDesc);
1544
1545 /* Read interrupt number for this TX queue */
1546 s->txq_descr[i].intr_idx =
1547 VMXNET3_READ_TX_QUEUE_DESCR8(d, qdescr_pa, conf.intrIdx);
1548 assert(vmxnet3_verify_intx(s, s->txq_descr[i].intr_idx));
1549
1550 VMW_CFPRN("TX Queue %d interrupt: %d", i, s->txq_descr[i].intr_idx);
1551
1552 /* Read rings memory locations for TX queues */
1553 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
1554 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
1555
1556 vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
1557 sizeof(struct Vmxnet3_TxDesc), false);
1558 VMXNET3_RING_DUMP(VMW_CFPRN, "TX", i, &s->txq_descr[i].tx_ring);
1559
1560 s->max_tx_frags += size;
1561
1562 /* TXC ring */
1563 pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
1564 size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
1565 vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
1566 sizeof(struct Vmxnet3_TxCompDesc), true);
1567 VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
1568
1569 s->txq_descr[i].tx_stats_pa =
1570 qdescr_pa + offsetof(struct Vmxnet3_TxQueueDesc, stats);
1571
1572 memset(&s->txq_descr[i].txq_stats, 0,
1573 sizeof(s->txq_descr[i].txq_stats));
1574
1575 /* Fill device-managed parameters for queues */
1576 VMXNET3_WRITE_TX_QUEUE_DESCR32(d, qdescr_pa,
1577 ctrl.txThreshold,
1578 VMXNET3_DEF_TX_THRESHOLD);
1579 }
1580
1581 /* Preallocate TX packet wrapper */
1582 VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags);
1583 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
1584 s->max_tx_frags, s->peer_has_vhdr);
1585 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
1586
1587 /* Read rings memory locations for RX queues */
1588 for (i = 0; i < s->rxq_num; i++) {
1589 int j;
1590 hwaddr qd_pa =
1591 qdescr_table_pa + s->txq_num * sizeof(struct Vmxnet3_TxQueueDesc) +
1592 i * sizeof(struct Vmxnet3_RxQueueDesc);
1593
1594 /* Read interrupt number for this RX queue */
1595 s->rxq_descr[i].intr_idx =
1596 VMXNET3_READ_TX_QUEUE_DESCR8(d, qd_pa, conf.intrIdx);
1597 assert(vmxnet3_verify_intx(s, s->rxq_descr[i].intr_idx));
1598
1599 VMW_CFPRN("RX Queue %d interrupt: %d", i, s->rxq_descr[i].intr_idx);
1600
1601 /* Read rings memory locations */
1602 for (j = 0; j < VMXNET3_RX_RINGS_PER_QUEUE; j++) {
1603 /* RX rings */
1604 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.rxRingBasePA[j]);
1605 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.rxRingSize[j]);
1606 vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
1607 sizeof(struct Vmxnet3_RxDesc), false);
1608 VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
1609 i, j, pa, size);
1610 }
1611
1612 /* RXC ring */
1613 pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
1614 size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
1615 vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
1616 sizeof(struct Vmxnet3_RxCompDesc), true);
1617 VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
1618
1619 s->rxq_descr[i].rx_stats_pa =
1620 qd_pa + offsetof(struct Vmxnet3_RxQueueDesc, stats);
1621 memset(&s->rxq_descr[i].rxq_stats, 0,
1622 sizeof(s->rxq_descr[i].rxq_stats));
1623 }
1624
1625 vmxnet3_validate_interrupts(s);
1626
1627 /* Make sure everything is in place before device activation */
1628 smp_wmb();
1629
1630 vmxnet3_reset_mac(s);
1631
1632 s->device_active = true;
1633 }
1634
1635 static void vmxnet3_handle_command(VMXNET3State *s, uint64_t cmd)
1636 {
1637 s->last_command = cmd;
1638
1639 switch (cmd) {
1640 case VMXNET3_CMD_GET_PERM_MAC_HI:
1641 VMW_CBPRN("Set: Get upper part of permanent MAC");
1642 break;
1643
1644 case VMXNET3_CMD_GET_PERM_MAC_LO:
1645 VMW_CBPRN("Set: Get lower part of permanent MAC");
1646 break;
1647
1648 case VMXNET3_CMD_GET_STATS:
1649 VMW_CBPRN("Set: Get device statistics");
1650 vmxnet3_fill_stats(s);
1651 break;
1652
1653 case VMXNET3_CMD_ACTIVATE_DEV:
1654 VMW_CBPRN("Set: Activating vmxnet3 device");
1655 vmxnet3_activate_device(s);
1656 break;
1657
1658 case VMXNET3_CMD_UPDATE_RX_MODE:
1659 VMW_CBPRN("Set: Update rx mode");
1660 vmxnet3_update_rx_mode(s);
1661 break;
1662
1663 case VMXNET3_CMD_UPDATE_VLAN_FILTERS:
1664 VMW_CBPRN("Set: Update VLAN filters");
1665 vmxnet3_update_vlan_filters(s);
1666 break;
1667
1668 case VMXNET3_CMD_UPDATE_MAC_FILTERS:
1669 VMW_CBPRN("Set: Update MAC filters");
1670 vmxnet3_update_mcast_filters(s);
1671 break;
1672
1673 case VMXNET3_CMD_UPDATE_FEATURE:
1674 VMW_CBPRN("Set: Update features");
1675 vmxnet3_update_features(s);
1676 break;
1677
1678 case VMXNET3_CMD_UPDATE_PMCFG:
1679 VMW_CBPRN("Set: Update power management config");
1680 vmxnet3_update_pm_state(s);
1681 break;
1682
1683 case VMXNET3_CMD_GET_LINK:
1684 VMW_CBPRN("Set: Get link");
1685 break;
1686
1687 case VMXNET3_CMD_RESET_DEV:
1688 VMW_CBPRN("Set: Reset device");
1689 vmxnet3_reset(s);
1690 break;
1691
1692 case VMXNET3_CMD_QUIESCE_DEV:
1693 VMW_CBPRN("Set: VMXNET3_CMD_QUIESCE_DEV - deactivate the device");
1694 vmxnet3_deactivate_device(s);
1695 break;
1696
1697 case VMXNET3_CMD_GET_CONF_INTR:
1698 VMW_CBPRN("Set: VMXNET3_CMD_GET_CONF_INTR - interrupt configuration");
1699 break;
1700
1701 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1702 VMW_CBPRN("Set: VMXNET3_CMD_GET_ADAPTIVE_RING_INFO - "
1703 "adaptive ring info flags");
1704 break;
1705
1706 case VMXNET3_CMD_GET_DID_LO:
1707 VMW_CBPRN("Set: Get lower part of device ID");
1708 break;
1709
1710 case VMXNET3_CMD_GET_DID_HI:
1711 VMW_CBPRN("Set: Get upper part of device ID");
1712 break;
1713
1714 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1715 VMW_CBPRN("Set: Get device extra info");
1716 break;
1717
1718 default:
1719 VMW_CBPRN("Received unknown command: %" PRIx64, cmd);
1720 break;
1721 }
1722 }
1723
1724 static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
1725 {
1726 uint64_t ret;
1727
1728 switch (s->last_command) {
1729 case VMXNET3_CMD_ACTIVATE_DEV:
1730 ret = (s->device_active) ? 0 : 1;
1731 VMW_CFPRN("Device active: %" PRIx64, ret);
1732 break;
1733
1734 case VMXNET3_CMD_RESET_DEV:
1735 case VMXNET3_CMD_QUIESCE_DEV:
1736 case VMXNET3_CMD_GET_QUEUE_STATUS:
1737 case VMXNET3_CMD_GET_DEV_EXTRA_INFO:
1738 ret = 0;
1739 break;
1740
1741 case VMXNET3_CMD_GET_LINK:
1742 ret = s->link_status_and_speed;
1743 VMW_CFPRN("Link and speed: %" PRIx64, ret);
1744 break;
1745
1746 case VMXNET3_CMD_GET_PERM_MAC_LO:
1747 ret = vmxnet3_get_mac_low(&s->perm_mac);
1748 break;
1749
1750 case VMXNET3_CMD_GET_PERM_MAC_HI:
1751 ret = vmxnet3_get_mac_high(&s->perm_mac);
1752 break;
1753
1754 case VMXNET3_CMD_GET_CONF_INTR:
1755 ret = vmxnet3_get_interrupt_config(s);
1756 break;
1757
1758 case VMXNET3_CMD_GET_ADAPTIVE_RING_INFO:
1759 ret = VMXNET3_DISABLE_ADAPTIVE_RING;
1760 break;
1761
1762 case VMXNET3_CMD_GET_DID_LO:
1763 ret = PCI_DEVICE_ID_VMWARE_VMXNET3;
1764 break;
1765
1766 case VMXNET3_CMD_GET_DID_HI:
1767 ret = VMXNET3_DEVICE_REVISION;
1768 break;
1769
1770 default:
1771 VMW_WRPRN("Received request for unknown command: %x", s->last_command);
1772 ret = 0;
1773 break;
1774 }
1775
1776 return ret;
1777 }
1778
1779 static void vmxnet3_set_events(VMXNET3State *s, uint32_t val)
1780 {
1781 uint32_t events;
1782 PCIDevice *d = PCI_DEVICE(s);
1783
1784 VMW_CBPRN("Setting events: 0x%x", val);
1785 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) | val;
1786 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1787 }
1788
1789 static void vmxnet3_ack_events(VMXNET3State *s, uint32_t val)
1790 {
1791 PCIDevice *d = PCI_DEVICE(s);
1792 uint32_t events;
1793
1794 VMW_CBPRN("Clearing events: 0x%x", val);
1795 events = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, ecr) & ~val;
1796 VMXNET3_WRITE_DRV_SHARED32(d, s->drv_shmem, ecr, events);
1797 }
1798
1799 static void
1800 vmxnet3_io_bar1_write(void *opaque,
1801 hwaddr addr,
1802 uint64_t val,
1803 unsigned size)
1804 {
1805 VMXNET3State *s = opaque;
1806
1807 switch (addr) {
1808 /* Vmxnet3 Revision Report Selection */
1809 case VMXNET3_REG_VRRS:
1810 VMW_CBPRN("Write BAR1 [VMXNET3_REG_VRRS] = %" PRIx64 ", size %d",
1811 val, size);
1812 break;
1813
1814 /* UPT Version Report Selection */
1815 case VMXNET3_REG_UVRS:
1816 VMW_CBPRN("Write BAR1 [VMXNET3_REG_UVRS] = %" PRIx64 ", size %d",
1817 val, size);
1818 break;
1819
1820 /* Driver Shared Address Low */
1821 case VMXNET3_REG_DSAL:
1822 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAL] = %" PRIx64 ", size %d",
1823 val, size);
1824 /*
1825 * Guest driver will first write the low part of the shared
1826 * memory address. We save it to temp variable and set the
1827 * shared address only after we get the high part
1828 */
1829 if (val == 0) {
1830 vmxnet3_deactivate_device(s);
1831 }
1832 s->temp_shared_guest_driver_memory = val;
1833 s->drv_shmem = 0;
1834 break;
1835
1836 /* Driver Shared Address High */
1837 case VMXNET3_REG_DSAH:
1838 VMW_CBPRN("Write BAR1 [VMXNET3_REG_DSAH] = %" PRIx64 ", size %d",
1839 val, size);
1840 /*
1841 * Set the shared memory between guest driver and device.
1842 * We already should have low address part.
1843 */
1844 s->drv_shmem = s->temp_shared_guest_driver_memory | (val << 32);
1845 break;
1846
1847 /* Command */
1848 case VMXNET3_REG_CMD:
1849 VMW_CBPRN("Write BAR1 [VMXNET3_REG_CMD] = %" PRIx64 ", size %d",
1850 val, size);
1851 vmxnet3_handle_command(s, val);
1852 break;
1853
1854 /* MAC Address Low */
1855 case VMXNET3_REG_MACL:
1856 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACL] = %" PRIx64 ", size %d",
1857 val, size);
1858 s->temp_mac = val;
1859 break;
1860
1861 /* MAC Address High */
1862 case VMXNET3_REG_MACH:
1863 VMW_CBPRN("Write BAR1 [VMXNET3_REG_MACH] = %" PRIx64 ", size %d",
1864 val, size);
1865 vmxnet3_set_variable_mac(s, val, s->temp_mac);
1866 break;
1867
1868 /* Interrupt Cause Register */
1869 case VMXNET3_REG_ICR:
1870 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
1871 val, size);
1872 g_assert_not_reached();
1873 break;
1874
1875 /* Event Cause Register */
1876 case VMXNET3_REG_ECR:
1877 VMW_CBPRN("Write BAR1 [VMXNET3_REG_ECR] = %" PRIx64 ", size %d",
1878 val, size);
1879 vmxnet3_ack_events(s, val);
1880 break;
1881
1882 default:
1883 VMW_CBPRN("Unknown Write to BAR1 [%" PRIx64 "] = %" PRIx64 ", size %d",
1884 addr, val, size);
1885 break;
1886 }
1887 }
1888
1889 static uint64_t
1890 vmxnet3_io_bar1_read(void *opaque, hwaddr addr, unsigned size)
1891 {
1892 VMXNET3State *s = opaque;
1893 uint64_t ret = 0;
1894
1895 switch (addr) {
1896 /* Vmxnet3 Revision Report Selection */
1897 case VMXNET3_REG_VRRS:
1898 VMW_CBPRN("Read BAR1 [VMXNET3_REG_VRRS], size %d", size);
1899 ret = VMXNET3_DEVICE_REVISION;
1900 break;
1901
1902 /* UPT Version Report Selection */
1903 case VMXNET3_REG_UVRS:
1904 VMW_CBPRN("Read BAR1 [VMXNET3_REG_UVRS], size %d", size);
1905 ret = VMXNET3_UPT_REVISION;
1906 break;
1907
1908 /* Command */
1909 case VMXNET3_REG_CMD:
1910 VMW_CBPRN("Read BAR1 [VMXNET3_REG_CMD], size %d", size);
1911 ret = vmxnet3_get_command_status(s);
1912 break;
1913
1914 /* MAC Address Low */
1915 case VMXNET3_REG_MACL:
1916 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACL], size %d", size);
1917 ret = vmxnet3_get_mac_low(&s->conf.macaddr);
1918 break;
1919
1920 /* MAC Address High */
1921 case VMXNET3_REG_MACH:
1922 VMW_CBPRN("Read BAR1 [VMXNET3_REG_MACH], size %d", size);
1923 ret = vmxnet3_get_mac_high(&s->conf.macaddr);
1924 break;
1925
1926 /*
1927 * Interrupt Cause Register
1928 * Used for legacy interrupts only so interrupt index always 0
1929 */
1930 case VMXNET3_REG_ICR:
1931 VMW_CBPRN("Read BAR1 [VMXNET3_REG_ICR], size %d", size);
1932 if (vmxnet3_interrupt_asserted(s, 0)) {
1933 vmxnet3_clear_interrupt(s, 0);
1934 ret = true;
1935 } else {
1936 ret = false;
1937 }
1938 break;
1939
1940 default:
1941 VMW_CBPRN("Unknow read BAR1[%" PRIx64 "], %d bytes", addr, size);
1942 break;
1943 }
1944
1945 return ret;
1946 }
1947
1948 static int
1949 vmxnet3_can_receive(NetClientState *nc)
1950 {
1951 VMXNET3State *s = qemu_get_nic_opaque(nc);
1952 return s->device_active &&
1953 VMXNET_FLAG_IS_SET(s->link_status_and_speed, VMXNET3_LINK_STATUS_UP);
1954 }
1955
1956 static inline bool
1957 vmxnet3_is_registered_vlan(VMXNET3State *s, const void *data)
1958 {
1959 uint16_t vlan_tag = eth_get_pkt_tci(data) & VLAN_VID_MASK;
1960 if (IS_SPECIAL_VLAN_ID(vlan_tag)) {
1961 return true;
1962 }
1963
1964 return VMXNET3_VFTABLE_ENTRY_IS_SET(s->vlan_table, vlan_tag);
1965 }
1966
1967 static bool
1968 vmxnet3_is_allowed_mcast_group(VMXNET3State *s, const uint8_t *group_mac)
1969 {
1970 int i;
1971 for (i = 0; i < s->mcast_list_len; i++) {
1972 if (!memcmp(group_mac, s->mcast_list[i].a, sizeof(s->mcast_list[i]))) {
1973 return true;
1974 }
1975 }
1976 return false;
1977 }
1978
1979 static bool
1980 vmxnet3_rx_filter_may_indicate(VMXNET3State *s, const void *data,
1981 size_t size)
1982 {
1983 struct eth_header *ehdr = PKT_GET_ETH_HDR(data);
1984
1985 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_PROMISC)) {
1986 return true;
1987 }
1988
1989 if (!vmxnet3_is_registered_vlan(s, data)) {
1990 return false;
1991 }
1992
1993 switch (net_rx_pkt_get_packet_type(s->rx_pkt)) {
1994 case ETH_PKT_UCAST:
1995 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_UCAST)) {
1996 return false;
1997 }
1998 if (memcmp(s->conf.macaddr.a, ehdr->h_dest, ETH_ALEN)) {
1999 return false;
2000 }
2001 break;
2002
2003 case ETH_PKT_BCAST:
2004 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_BCAST)) {
2005 return false;
2006 }
2007 break;
2008
2009 case ETH_PKT_MCAST:
2010 if (VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_ALL_MULTI)) {
2011 return true;
2012 }
2013 if (!VMXNET_FLAG_IS_SET(s->rx_mode, VMXNET3_RXM_MCAST)) {
2014 return false;
2015 }
2016 if (!vmxnet3_is_allowed_mcast_group(s, ehdr->h_dest)) {
2017 return false;
2018 }
2019 break;
2020
2021 default:
2022 g_assert_not_reached();
2023 }
2024
2025 return true;
2026 }
2027
2028 static ssize_t
2029 vmxnet3_receive(NetClientState *nc, const uint8_t *buf, size_t size)
2030 {
2031 VMXNET3State *s = qemu_get_nic_opaque(nc);
2032 size_t bytes_indicated;
2033 uint8_t min_buf[MIN_BUF_SIZE];
2034
2035 if (!vmxnet3_can_receive(nc)) {
2036 VMW_PKPRN("Cannot receive now");
2037 return -1;
2038 }
2039
2040 if (s->peer_has_vhdr) {
2041 net_rx_pkt_set_vhdr(s->rx_pkt, (struct virtio_net_hdr *)buf);
2042 buf += sizeof(struct virtio_net_hdr);
2043 size -= sizeof(struct virtio_net_hdr);
2044 }
2045
2046 /* Pad to minimum Ethernet frame length */
2047 if (size < sizeof(min_buf)) {
2048 memcpy(min_buf, buf, size);
2049 memset(&min_buf[size], 0, sizeof(min_buf) - size);
2050 buf = min_buf;
2051 size = sizeof(min_buf);
2052 }
2053
2054 net_rx_pkt_set_packet_type(s->rx_pkt,
2055 get_eth_packet_type(PKT_GET_ETH_HDR(buf)));
2056
2057 if (vmxnet3_rx_filter_may_indicate(s, buf, size)) {
2058 net_rx_pkt_set_protocols(s->rx_pkt, buf, size);
2059 vmxnet3_rx_need_csum_calculate(s->rx_pkt, buf, size);
2060 net_rx_pkt_attach_data(s->rx_pkt, buf, size, s->rx_vlan_stripping);
2061 bytes_indicated = vmxnet3_indicate_packet(s) ? size : -1;
2062 if (bytes_indicated < size) {
2063 VMW_PKPRN("RX: %zu of %zu bytes indicated", bytes_indicated, size);
2064 }
2065 } else {
2066 VMW_PKPRN("Packet dropped by RX filter");
2067 bytes_indicated = size;
2068 }
2069
2070 assert(size > 0);
2071 assert(bytes_indicated != 0);
2072 return bytes_indicated;
2073 }
2074
2075 static void vmxnet3_set_link_status(NetClientState *nc)
2076 {
2077 VMXNET3State *s = qemu_get_nic_opaque(nc);
2078
2079 if (nc->link_down) {
2080 s->link_status_and_speed &= ~VMXNET3_LINK_STATUS_UP;
2081 } else {
2082 s->link_status_and_speed |= VMXNET3_LINK_STATUS_UP;
2083 }
2084
2085 vmxnet3_set_events(s, VMXNET3_ECR_LINK);
2086 vmxnet3_trigger_interrupt(s, s->event_int_idx);
2087 }
2088
2089 static NetClientInfo net_vmxnet3_info = {
2090 .type = NET_CLIENT_OPTIONS_KIND_NIC,
2091 .size = sizeof(NICState),
2092 .receive = vmxnet3_receive,
2093 .link_status_changed = vmxnet3_set_link_status,
2094 };
2095
2096 static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
2097 {
2098 NetClientState *nc = qemu_get_queue(s->nic);
2099
2100 if (qemu_has_vnet_hdr(nc->peer)) {
2101 return true;
2102 }
2103
2104 return false;
2105 }
2106
2107 static void vmxnet3_net_uninit(VMXNET3State *s)
2108 {
2109 g_free(s->mcast_list);
2110 vmxnet3_deactivate_device(s);
2111 qemu_del_nic(s->nic);
2112 }
2113
2114 static void vmxnet3_net_init(VMXNET3State *s)
2115 {
2116 DeviceState *d = DEVICE(s);
2117
2118 VMW_CBPRN("vmxnet3_net_init called...");
2119
2120 qemu_macaddr_default_if_unset(&s->conf.macaddr);
2121
2122 /* Windows guest will query the address that was set on init */
2123 memcpy(&s->perm_mac.a, &s->conf.macaddr.a, sizeof(s->perm_mac.a));
2124
2125 s->mcast_list = NULL;
2126 s->mcast_list_len = 0;
2127
2128 s->link_status_and_speed = VMXNET3_LINK_SPEED | VMXNET3_LINK_STATUS_UP;
2129
2130 VMW_CFPRN("Permanent MAC: " MAC_FMT, MAC_ARG(s->perm_mac.a));
2131
2132 s->nic = qemu_new_nic(&net_vmxnet3_info, &s->conf,
2133 object_get_typename(OBJECT(s)),
2134 d->id, s);
2135
2136 s->peer_has_vhdr = vmxnet3_peer_has_vnet_hdr(s);
2137 s->tx_sop = true;
2138 s->skip_current_tx_pkt = false;
2139 s->tx_pkt = NULL;
2140 s->rx_pkt = NULL;
2141 s->rx_vlan_stripping = false;
2142 s->lro_supported = false;
2143
2144 if (s->peer_has_vhdr) {
2145 qemu_set_vnet_hdr_len(qemu_get_queue(s->nic)->peer,
2146 sizeof(struct virtio_net_hdr));
2147
2148 qemu_using_vnet_hdr(qemu_get_queue(s->nic)->peer, 1);
2149 }
2150
2151 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
2152 }
2153
2154 static void
2155 vmxnet3_unuse_msix_vectors(VMXNET3State *s, int num_vectors)
2156 {
2157 PCIDevice *d = PCI_DEVICE(s);
2158 int i;
2159 for (i = 0; i < num_vectors; i++) {
2160 msix_vector_unuse(d, i);
2161 }
2162 }
2163
2164 static bool
2165 vmxnet3_use_msix_vectors(VMXNET3State *s, int num_vectors)
2166 {
2167 PCIDevice *d = PCI_DEVICE(s);
2168 int i;
2169 for (i = 0; i < num_vectors; i++) {
2170 int res = msix_vector_use(d, i);
2171 if (0 > res) {
2172 VMW_WRPRN("Failed to use MSI-X vector %d, error %d", i, res);
2173 vmxnet3_unuse_msix_vectors(s, i);
2174 return false;
2175 }
2176 }
2177 return true;
2178 }
2179
2180 static bool
2181 vmxnet3_init_msix(VMXNET3State *s)
2182 {
2183 PCIDevice *d = PCI_DEVICE(s);
2184 int res = msix_init(d, VMXNET3_MAX_INTRS,
2185 &s->msix_bar,
2186 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_TABLE,
2187 &s->msix_bar,
2188 VMXNET3_MSIX_BAR_IDX, VMXNET3_OFF_MSIX_PBA(s),
2189 VMXNET3_MSIX_OFFSET(s));
2190
2191 if (0 > res) {
2192 VMW_WRPRN("Failed to initialize MSI-X, error %d", res);
2193 s->msix_used = false;
2194 } else {
2195 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2196 VMW_WRPRN("Failed to use MSI-X vectors, error %d", res);
2197 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2198 s->msix_used = false;
2199 } else {
2200 s->msix_used = true;
2201 }
2202 }
2203 return s->msix_used;
2204 }
2205
2206 static void
2207 vmxnet3_cleanup_msix(VMXNET3State *s)
2208 {
2209 PCIDevice *d = PCI_DEVICE(s);
2210
2211 if (s->msix_used) {
2212 vmxnet3_unuse_msix_vectors(s, VMXNET3_MAX_INTRS);
2213 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2214 }
2215 }
2216
2217 static void
2218 vmxnet3_cleanup_msi(VMXNET3State *s)
2219 {
2220 PCIDevice *d = PCI_DEVICE(s);
2221
2222 msi_uninit(d);
2223 }
2224
2225 static void
2226 vmxnet3_msix_save(QEMUFile *f, void *opaque)
2227 {
2228 PCIDevice *d = PCI_DEVICE(opaque);
2229 msix_save(d, f);
2230 }
2231
2232 static int
2233 vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
2234 {
2235 PCIDevice *d = PCI_DEVICE(opaque);
2236 msix_load(d, f);
2237 return 0;
2238 }
2239
2240 static const MemoryRegionOps b0_ops = {
2241 .read = vmxnet3_io_bar0_read,
2242 .write = vmxnet3_io_bar0_write,
2243 .endianness = DEVICE_LITTLE_ENDIAN,
2244 .impl = {
2245 .min_access_size = 4,
2246 .max_access_size = 4,
2247 },
2248 };
2249
2250 static const MemoryRegionOps b1_ops = {
2251 .read = vmxnet3_io_bar1_read,
2252 .write = vmxnet3_io_bar1_write,
2253 .endianness = DEVICE_LITTLE_ENDIAN,
2254 .impl = {
2255 .min_access_size = 4,
2256 .max_access_size = 4,
2257 },
2258 };
2259
2260 static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
2261 {
2262 uint64_t dsn_payload;
2263 uint8_t *dsnp = (uint8_t *)&dsn_payload;
2264
2265 dsnp[0] = 0xfe;
2266 dsnp[1] = s->conf.macaddr.a[3];
2267 dsnp[2] = s->conf.macaddr.a[4];
2268 dsnp[3] = s->conf.macaddr.a[5];
2269 dsnp[4] = s->conf.macaddr.a[0];
2270 dsnp[5] = s->conf.macaddr.a[1];
2271 dsnp[6] = s->conf.macaddr.a[2];
2272 dsnp[7] = 0xff;
2273 return dsn_payload;
2274 }
2275
2276
2277 #define VMXNET3_USE_64BIT (true)
2278 #define VMXNET3_PER_VECTOR_MASK (false)
2279
2280 static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
2281 {
2282 DeviceState *dev = DEVICE(pci_dev);
2283 VMXNET3State *s = VMXNET3(pci_dev);
2284 int ret;
2285
2286 VMW_CBPRN("Starting init...");
2287
2288 memory_region_init_io(&s->bar0, OBJECT(s), &b0_ops, s,
2289 "vmxnet3-b0", VMXNET3_PT_REG_SIZE);
2290 pci_register_bar(pci_dev, VMXNET3_BAR0_IDX,
2291 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
2292
2293 memory_region_init_io(&s->bar1, OBJECT(s), &b1_ops, s,
2294 "vmxnet3-b1", VMXNET3_VD_REG_SIZE);
2295 pci_register_bar(pci_dev, VMXNET3_BAR1_IDX,
2296 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
2297
2298 memory_region_init(&s->msix_bar, OBJECT(s), "vmxnet3-msix-bar",
2299 VMXNET3_MSIX_BAR_SIZE);
2300 pci_register_bar(pci_dev, VMXNET3_MSIX_BAR_IDX,
2301 PCI_BASE_ADDRESS_SPACE_MEMORY, &s->msix_bar);
2302
2303 vmxnet3_reset_interrupt_states(s);
2304
2305 /* Interrupt pin A */
2306 pci_dev->config[PCI_INTERRUPT_PIN] = 0x01;
2307
2308 ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS,
2309 VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL);
2310 /* Any error other than -ENOTSUP(board's MSI support is broken)
2311 * is a programming error. Fall back to INTx silently on -ENOTSUP */
2312 assert(!ret || ret == -ENOTSUP);
2313
2314 if (!vmxnet3_init_msix(s)) {
2315 VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent.");
2316 }
2317
2318 vmxnet3_net_init(s);
2319
2320 if (pci_is_express(pci_dev)) {
2321 if (pci_bus_is_express(pci_dev->bus)) {
2322 pcie_endpoint_cap_init(pci_dev, VMXNET3_EXP_EP_OFFSET);
2323 }
2324
2325 pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
2326 vmxnet3_device_serial_num(s));
2327 }
2328
2329 register_savevm(dev, "vmxnet3-msix", -1, 1,
2330 vmxnet3_msix_save, vmxnet3_msix_load, s);
2331 }
2332
2333 static void vmxnet3_instance_init(Object *obj)
2334 {
2335 VMXNET3State *s = VMXNET3(obj);
2336 device_add_bootindex_property(obj, &s->conf.bootindex,
2337 "bootindex", "/ethernet-phy@0",
2338 DEVICE(obj), NULL);
2339 }
2340
2341 static void vmxnet3_pci_uninit(PCIDevice *pci_dev)
2342 {
2343 DeviceState *dev = DEVICE(pci_dev);
2344 VMXNET3State *s = VMXNET3(pci_dev);
2345
2346 VMW_CBPRN("Starting uninit...");
2347
2348 unregister_savevm(dev, "vmxnet3-msix", s);
2349
2350 vmxnet3_net_uninit(s);
2351
2352 vmxnet3_cleanup_msix(s);
2353
2354 vmxnet3_cleanup_msi(s);
2355 }
2356
2357 static void vmxnet3_qdev_reset(DeviceState *dev)
2358 {
2359 PCIDevice *d = PCI_DEVICE(dev);
2360 VMXNET3State *s = VMXNET3(d);
2361
2362 VMW_CBPRN("Starting QDEV reset...");
2363 vmxnet3_reset(s);
2364 }
2365
2366 static bool vmxnet3_mc_list_needed(void *opaque)
2367 {
2368 return true;
2369 }
2370
2371 static int vmxnet3_mcast_list_pre_load(void *opaque)
2372 {
2373 VMXNET3State *s = opaque;
2374
2375 s->mcast_list = g_malloc(s->mcast_list_buff_size);
2376
2377 return 0;
2378 }
2379
2380
2381 static void vmxnet3_pre_save(void *opaque)
2382 {
2383 VMXNET3State *s = opaque;
2384
2385 s->mcast_list_buff_size = s->mcast_list_len * sizeof(MACAddr);
2386 }
2387
2388 static const VMStateDescription vmxstate_vmxnet3_mcast_list = {
2389 .name = "vmxnet3/mcast_list",
2390 .version_id = 1,
2391 .minimum_version_id = 1,
2392 .pre_load = vmxnet3_mcast_list_pre_load,
2393 .needed = vmxnet3_mc_list_needed,
2394 .fields = (VMStateField[]) {
2395 VMSTATE_VBUFFER_UINT32(mcast_list, VMXNET3State, 0, NULL, 0,
2396 mcast_list_buff_size),
2397 VMSTATE_END_OF_LIST()
2398 }
2399 };
2400
2401 static void vmxnet3_get_ring_from_file(QEMUFile *f, Vmxnet3Ring *r)
2402 {
2403 r->pa = qemu_get_be64(f);
2404 r->size = qemu_get_be32(f);
2405 r->cell_size = qemu_get_be32(f);
2406 r->next = qemu_get_be32(f);
2407 r->gen = qemu_get_byte(f);
2408 }
2409
2410 static void vmxnet3_put_ring_to_file(QEMUFile *f, Vmxnet3Ring *r)
2411 {
2412 qemu_put_be64(f, r->pa);
2413 qemu_put_be32(f, r->size);
2414 qemu_put_be32(f, r->cell_size);
2415 qemu_put_be32(f, r->next);
2416 qemu_put_byte(f, r->gen);
2417 }
2418
2419 static void vmxnet3_get_tx_stats_from_file(QEMUFile *f,
2420 struct UPT1_TxStats *tx_stat)
2421 {
2422 tx_stat->TSOPktsTxOK = qemu_get_be64(f);
2423 tx_stat->TSOBytesTxOK = qemu_get_be64(f);
2424 tx_stat->ucastPktsTxOK = qemu_get_be64(f);
2425 tx_stat->ucastBytesTxOK = qemu_get_be64(f);
2426 tx_stat->mcastPktsTxOK = qemu_get_be64(f);
2427 tx_stat->mcastBytesTxOK = qemu_get_be64(f);
2428 tx_stat->bcastPktsTxOK = qemu_get_be64(f);
2429 tx_stat->bcastBytesTxOK = qemu_get_be64(f);
2430 tx_stat->pktsTxError = qemu_get_be64(f);
2431 tx_stat->pktsTxDiscard = qemu_get_be64(f);
2432 }
2433
2434 static void vmxnet3_put_tx_stats_to_file(QEMUFile *f,
2435 struct UPT1_TxStats *tx_stat)
2436 {
2437 qemu_put_be64(f, tx_stat->TSOPktsTxOK);
2438 qemu_put_be64(f, tx_stat->TSOBytesTxOK);
2439 qemu_put_be64(f, tx_stat->ucastPktsTxOK);
2440 qemu_put_be64(f, tx_stat->ucastBytesTxOK);
2441 qemu_put_be64(f, tx_stat->mcastPktsTxOK);
2442 qemu_put_be64(f, tx_stat->mcastBytesTxOK);
2443 qemu_put_be64(f, tx_stat->bcastPktsTxOK);
2444 qemu_put_be64(f, tx_stat->bcastBytesTxOK);
2445 qemu_put_be64(f, tx_stat->pktsTxError);
2446 qemu_put_be64(f, tx_stat->pktsTxDiscard);
2447 }
2448
2449 static int vmxnet3_get_txq_descr(QEMUFile *f, void *pv, size_t size)
2450 {
2451 Vmxnet3TxqDescr *r = pv;
2452
2453 vmxnet3_get_ring_from_file(f, &r->tx_ring);
2454 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2455 r->intr_idx = qemu_get_byte(f);
2456 r->tx_stats_pa = qemu_get_be64(f);
2457
2458 vmxnet3_get_tx_stats_from_file(f, &r->txq_stats);
2459
2460 return 0;
2461 }
2462
2463 static void vmxnet3_put_txq_descr(QEMUFile *f, void *pv, size_t size)
2464 {
2465 Vmxnet3TxqDescr *r = pv;
2466
2467 vmxnet3_put_ring_to_file(f, &r->tx_ring);
2468 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2469 qemu_put_byte(f, r->intr_idx);
2470 qemu_put_be64(f, r->tx_stats_pa);
2471 vmxnet3_put_tx_stats_to_file(f, &r->txq_stats);
2472 }
2473
2474 static const VMStateInfo txq_descr_info = {
2475 .name = "txq_descr",
2476 .get = vmxnet3_get_txq_descr,
2477 .put = vmxnet3_put_txq_descr
2478 };
2479
2480 static void vmxnet3_get_rx_stats_from_file(QEMUFile *f,
2481 struct UPT1_RxStats *rx_stat)
2482 {
2483 rx_stat->LROPktsRxOK = qemu_get_be64(f);
2484 rx_stat->LROBytesRxOK = qemu_get_be64(f);
2485 rx_stat->ucastPktsRxOK = qemu_get_be64(f);
2486 rx_stat->ucastBytesRxOK = qemu_get_be64(f);
2487 rx_stat->mcastPktsRxOK = qemu_get_be64(f);
2488 rx_stat->mcastBytesRxOK = qemu_get_be64(f);
2489 rx_stat->bcastPktsRxOK = qemu_get_be64(f);
2490 rx_stat->bcastBytesRxOK = qemu_get_be64(f);
2491 rx_stat->pktsRxOutOfBuf = qemu_get_be64(f);
2492 rx_stat->pktsRxError = qemu_get_be64(f);
2493 }
2494
2495 static void vmxnet3_put_rx_stats_to_file(QEMUFile *f,
2496 struct UPT1_RxStats *rx_stat)
2497 {
2498 qemu_put_be64(f, rx_stat->LROPktsRxOK);
2499 qemu_put_be64(f, rx_stat->LROBytesRxOK);
2500 qemu_put_be64(f, rx_stat->ucastPktsRxOK);
2501 qemu_put_be64(f, rx_stat->ucastBytesRxOK);
2502 qemu_put_be64(f, rx_stat->mcastPktsRxOK);
2503 qemu_put_be64(f, rx_stat->mcastBytesRxOK);
2504 qemu_put_be64(f, rx_stat->bcastPktsRxOK);
2505 qemu_put_be64(f, rx_stat->bcastBytesRxOK);
2506 qemu_put_be64(f, rx_stat->pktsRxOutOfBuf);
2507 qemu_put_be64(f, rx_stat->pktsRxError);
2508 }
2509
2510 static int vmxnet3_get_rxq_descr(QEMUFile *f, void *pv, size_t size)
2511 {
2512 Vmxnet3RxqDescr *r = pv;
2513 int i;
2514
2515 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2516 vmxnet3_get_ring_from_file(f, &r->rx_ring[i]);
2517 }
2518
2519 vmxnet3_get_ring_from_file(f, &r->comp_ring);
2520 r->intr_idx = qemu_get_byte(f);
2521 r->rx_stats_pa = qemu_get_be64(f);
2522
2523 vmxnet3_get_rx_stats_from_file(f, &r->rxq_stats);
2524
2525 return 0;
2526 }
2527
2528 static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size)
2529 {
2530 Vmxnet3RxqDescr *r = pv;
2531 int i;
2532
2533 for (i = 0; i < VMXNET3_RX_RINGS_PER_QUEUE; i++) {
2534 vmxnet3_put_ring_to_file(f, &r->rx_ring[i]);
2535 }
2536
2537 vmxnet3_put_ring_to_file(f, &r->comp_ring);
2538 qemu_put_byte(f, r->intr_idx);
2539 qemu_put_be64(f, r->rx_stats_pa);
2540 vmxnet3_put_rx_stats_to_file(f, &r->rxq_stats);
2541 }
2542
2543 static int vmxnet3_post_load(void *opaque, int version_id)
2544 {
2545 VMXNET3State *s = opaque;
2546 PCIDevice *d = PCI_DEVICE(s);
2547
2548 net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s),
2549 s->max_tx_frags, s->peer_has_vhdr);
2550 net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr);
2551
2552 if (s->msix_used) {
2553 if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) {
2554 VMW_WRPRN("Failed to re-use MSI-X vectors");
2555 msix_uninit(d, &s->msix_bar, &s->msix_bar);
2556 s->msix_used = false;
2557 return -1;
2558 }
2559 }
2560
2561 vmxnet3_validate_queues(s);
2562 vmxnet3_validate_interrupts(s);
2563
2564 return 0;
2565 }
2566
2567 static const VMStateInfo rxq_descr_info = {
2568 .name = "rxq_descr",
2569 .get = vmxnet3_get_rxq_descr,
2570 .put = vmxnet3_put_rxq_descr
2571 };
2572
2573 static int vmxnet3_get_int_state(QEMUFile *f, void *pv, size_t size)
2574 {
2575 Vmxnet3IntState *r = pv;
2576
2577 r->is_masked = qemu_get_byte(f);
2578 r->is_pending = qemu_get_byte(f);
2579 r->is_asserted = qemu_get_byte(f);
2580
2581 return 0;
2582 }
2583
2584 static void vmxnet3_put_int_state(QEMUFile *f, void *pv, size_t size)
2585 {
2586 Vmxnet3IntState *r = pv;
2587
2588 qemu_put_byte(f, r->is_masked);
2589 qemu_put_byte(f, r->is_pending);
2590 qemu_put_byte(f, r->is_asserted);
2591 }
2592
2593 static const VMStateInfo int_state_info = {
2594 .name = "int_state",
2595 .get = vmxnet3_get_int_state,
2596 .put = vmxnet3_put_int_state
2597 };
2598
2599 static bool vmxnet3_vmstate_need_pcie_device(void *opaque)
2600 {
2601 VMXNET3State *s = VMXNET3(opaque);
2602
2603 return !(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE);
2604 }
2605
2606 static bool vmxnet3_vmstate_test_pci_device(void *opaque, int version_id)
2607 {
2608 return !vmxnet3_vmstate_need_pcie_device(opaque);
2609 }
2610
2611 static const VMStateDescription vmstate_vmxnet3_pcie_device = {
2612 .name = "vmxnet3/pcie",
2613 .version_id = 1,
2614 .minimum_version_id = 1,
2615 .needed = vmxnet3_vmstate_need_pcie_device,
2616 .fields = (VMStateField[]) {
2617 VMSTATE_PCIE_DEVICE(parent_obj, VMXNET3State),
2618 VMSTATE_END_OF_LIST()
2619 }
2620 };
2621
2622 static const VMStateDescription vmstate_vmxnet3 = {
2623 .name = "vmxnet3",
2624 .version_id = 1,
2625 .minimum_version_id = 1,
2626 .pre_save = vmxnet3_pre_save,
2627 .post_load = vmxnet3_post_load,
2628 .fields = (VMStateField[]) {
2629 VMSTATE_STRUCT_TEST(parent_obj, VMXNET3State,
2630 vmxnet3_vmstate_test_pci_device, 0,
2631 vmstate_pci_device, PCIDevice),
2632 VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
2633 VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
2634 VMSTATE_BOOL(lro_supported, VMXNET3State),
2635 VMSTATE_UINT32(rx_mode, VMXNET3State),
2636 VMSTATE_UINT32(mcast_list_len, VMXNET3State),
2637 VMSTATE_UINT32(mcast_list_buff_size, VMXNET3State),
2638 VMSTATE_UINT32_ARRAY(vlan_table, VMXNET3State, VMXNET3_VFT_SIZE),
2639 VMSTATE_UINT32(mtu, VMXNET3State),
2640 VMSTATE_UINT16(max_rx_frags, VMXNET3State),
2641 VMSTATE_UINT32(max_tx_frags, VMXNET3State),
2642 VMSTATE_UINT8(event_int_idx, VMXNET3State),
2643 VMSTATE_BOOL(auto_int_masking, VMXNET3State),
2644 VMSTATE_UINT8(txq_num, VMXNET3State),
2645 VMSTATE_UINT8(rxq_num, VMXNET3State),
2646 VMSTATE_UINT32(device_active, VMXNET3State),
2647 VMSTATE_UINT32(last_command, VMXNET3State),
2648 VMSTATE_UINT32(link_status_and_speed, VMXNET3State),
2649 VMSTATE_UINT32(temp_mac, VMXNET3State),
2650 VMSTATE_UINT64(drv_shmem, VMXNET3State),
2651 VMSTATE_UINT64(temp_shared_guest_driver_memory, VMXNET3State),
2652
2653 VMSTATE_ARRAY(txq_descr, VMXNET3State,
2654 VMXNET3_DEVICE_MAX_TX_QUEUES, 0, txq_descr_info,
2655 Vmxnet3TxqDescr),
2656 VMSTATE_ARRAY(rxq_descr, VMXNET3State,
2657 VMXNET3_DEVICE_MAX_RX_QUEUES, 0, rxq_descr_info,
2658 Vmxnet3RxqDescr),
2659 VMSTATE_ARRAY(interrupt_states, VMXNET3State, VMXNET3_MAX_INTRS,
2660 0, int_state_info, Vmxnet3IntState),
2661
2662 VMSTATE_END_OF_LIST()
2663 },
2664 .subsections = (const VMStateDescription*[]) {
2665 &vmxstate_vmxnet3_mcast_list,
2666 &vmstate_vmxnet3_pcie_device,
2667 NULL
2668 }
2669 };
2670
2671 static Property vmxnet3_properties[] = {
2672 DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
2673 DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
2674 VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
2675 DEFINE_PROP_BIT("x-disable-pcie", VMXNET3State, compat_flags,
2676 VMXNET3_COMPAT_FLAG_DISABLE_PCIE_BIT, false),
2677 DEFINE_PROP_END_OF_LIST(),
2678 };
2679
2680 static void vmxnet3_realize(DeviceState *qdev, Error **errp)
2681 {
2682 VMXNET3Class *vc = VMXNET3_DEVICE_GET_CLASS(qdev);
2683 PCIDevice *pci_dev = PCI_DEVICE(qdev);
2684 VMXNET3State *s = VMXNET3(qdev);
2685
2686 if (!(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE)) {
2687 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
2688 }
2689
2690 vc->parent_dc_realize(qdev, errp);
2691 }
2692
2693 static void vmxnet3_class_init(ObjectClass *class, void *data)
2694 {
2695 DeviceClass *dc = DEVICE_CLASS(class);
2696 PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
2697 VMXNET3Class *vc = VMXNET3_DEVICE_CLASS(class);
2698
2699 c->realize = vmxnet3_pci_realize;
2700 c->exit = vmxnet3_pci_uninit;
2701 c->vendor_id = PCI_VENDOR_ID_VMWARE;
2702 c->device_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2703 c->revision = PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION;
2704 c->class_id = PCI_CLASS_NETWORK_ETHERNET;
2705 c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
2706 c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3;
2707 vc->parent_dc_realize = dc->realize;
2708 dc->realize = vmxnet3_realize;
2709 dc->desc = "VMWare Paravirtualized Ethernet v3";
2710 dc->reset = vmxnet3_qdev_reset;
2711 dc->vmsd = &vmstate_vmxnet3;
2712 dc->props = vmxnet3_properties;
2713 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2714 }
2715
2716 static const TypeInfo vmxnet3_info = {
2717 .name = TYPE_VMXNET3,
2718 .parent = TYPE_PCI_DEVICE,
2719 .class_size = sizeof(VMXNET3Class),
2720 .instance_size = sizeof(VMXNET3State),
2721 .class_init = vmxnet3_class_init,
2722 .instance_init = vmxnet3_instance_init,
2723 };
2724
2725 static void vmxnet3_register_types(void)
2726 {
2727 VMW_CBPRN("vmxnet3_register_types called...");
2728 type_register_static(&vmxnet3_info);
2729 }
2730
2731 type_init(vmxnet3_register_types)
CRIS target port of Qemu