Revision 1b0009db hw/e1000.c
| b/hw/e1000.c | ||
|---|---|---|
| 105 | 105 |
char tse; |
| 106 | 106 |
char ip; |
| 107 | 107 |
char tcp; |
| 108 |
char cptse; // current packet tse bit |
|
| 108 | 109 |
} tx; |
| 109 | 110 |
|
| 110 | 111 |
struct {
|
| ... | ... | |
| 308 | 309 |
unsigned int frames = s->tx.tso_frames, css, sofar, n; |
| 309 | 310 |
struct e1000_tx *tp = &s->tx; |
| 310 | 311 |
|
| 311 |
if (tp->tse) {
|
|
| 312 |
if (tp->tse && tp->cptse) {
|
|
| 312 | 313 |
css = tp->ipcss; |
| 313 | 314 |
DBGOUT(TXSUM, "frames %d size %d ipcss %d\n", |
| 314 | 315 |
frames, tp->size, css); |
| ... | ... | |
| 382 | 383 |
tp->tucso = tp->tucss + (tp->tcp ? 16 : 6); |
| 383 | 384 |
} |
| 384 | 385 |
return; |
| 385 |
} else if (dtype == (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D)) |
|
| 386 |
} else if (dtype == (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D)) {
|
|
| 387 |
// data descriptor |
|
| 386 | 388 |
tp->sum_needed = le32_to_cpu(dp->upper.data) >> 8; |
| 389 |
tp->cptse = ( txd_lower & E1000_TXD_CMD_TSE ) ? 1 : 0; |
|
| 390 |
} else |
|
| 391 |
// legacy descriptor |
|
| 392 |
tp->cptse = 0; |
|
| 387 | 393 |
|
| 388 | 394 |
addr = le64_to_cpu(dp->buffer_addr); |
| 389 |
if (tp->tse) {
|
|
| 395 |
if (tp->tse && tp->cptse) {
|
|
| 390 | 396 |
hdr = tp->hdr_len; |
| 391 | 397 |
msh = hdr + tp->mss; |
| 398 |
do {
|
|
| 399 |
bytes = split_size; |
|
| 400 |
if (tp->size + bytes > msh) |
|
| 401 |
bytes = msh - tp->size; |
|
| 402 |
cpu_physical_memory_read(addr, tp->data + tp->size, bytes); |
|
| 403 |
if ((sz = tp->size + bytes) >= hdr && tp->size < hdr) |
|
| 404 |
memmove(tp->header, tp->data, hdr); |
|
| 405 |
tp->size = sz; |
|
| 406 |
addr += bytes; |
|
| 407 |
if (sz == msh) {
|
|
| 408 |
xmit_seg(s); |
|
| 409 |
memmove(tp->data, tp->header, hdr); |
|
| 410 |
tp->size = hdr; |
|
| 411 |
} |
|
| 412 |
} while (split_size -= bytes); |
|
| 413 |
} else if (!tp->tse && tp->cptse) {
|
|
| 414 |
// context descriptor TSE is not set, while data descriptor TSE is set |
|
| 415 |
DBGOUT(TXERR, "TCP segmentaion Error\n"); |
|
| 416 |
} else {
|
|
| 417 |
cpu_physical_memory_read(addr, tp->data + tp->size, split_size); |
|
| 418 |
tp->size += split_size; |
|
| 392 | 419 |
} |
| 393 |
do {
|
|
| 394 |
bytes = split_size; |
|
| 395 |
if (tp->size + bytes > msh) |
|
| 396 |
bytes = msh - tp->size; |
|
| 397 |
cpu_physical_memory_read(addr, tp->data + tp->size, bytes); |
|
| 398 |
if ((sz = tp->size + bytes) >= hdr && tp->size < hdr) |
|
| 399 |
memmove(tp->header, tp->data, hdr); |
|
| 400 |
tp->size = sz; |
|
| 401 |
addr += bytes; |
|
| 402 |
if (sz == msh) {
|
|
| 403 |
xmit_seg(s); |
|
| 404 |
memmove(tp->data, tp->header, hdr); |
|
| 405 |
tp->size = hdr; |
|
| 406 |
} |
|
| 407 |
} while (split_size -= bytes); |
|
| 408 | 420 |
|
| 409 | 421 |
if (!(txd_lower & E1000_TXD_CMD_EOP)) |
| 410 | 422 |
return; |
| 411 |
if (tp->size > hdr)
|
|
| 423 |
if (!(tp->tse && tp->cptse && tp->size < hdr))
|
|
| 412 | 424 |
xmit_seg(s); |
| 413 | 425 |
tp->tso_frames = 0; |
| 414 | 426 |
tp->sum_needed = 0; |
| 415 | 427 |
tp->size = 0; |
| 428 |
tp->cptse = 0; |
|
| 416 | 429 |
} |
| 417 | 430 |
|
| 418 | 431 |
static uint32_t |
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