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Lines 308-334
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| 308 |
MODULE_DEPEND(vtnet, netmap, 1, 1, 1); |
308 |
MODULE_DEPEND(vtnet, netmap, 1, 1, 1); |
| 309 |
#endif /* DEV_NETMAP */ |
309 |
#endif /* DEV_NETMAP */ |
| 310 |
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310 |
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311 |
static struct sx mlu; |
| 312 |
SX_SYSINIT(vtnet_mlu, &mlu, "vtnet mod load/unload"); |
| 313 |
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| 311 |
static int |
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static int |
| 312 |
vtnet_modevent(module_t mod, int type, void *unused) |
315 |
vtnet_modevent(module_t mod, int type, void *unused) |
| 313 |
{ |
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{ |
| 314 |
int error; |
317 |
int error = 0; |
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static int loaded = 0; |
| 315 |
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| 316 |
error = 0; |
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| 317 |
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| 318 |
switch (type) { |
320 |
switch (type) { |
| 319 |
case MOD_LOAD: |
321 |
case MOD_LOAD: |
| 320 |
vtnet_tx_header_zone = uma_zcreate("vtnet_tx_hdr", |
322 |
sx_xlock(&mlu); |
| 321 |
sizeof(struct vtnet_tx_header), |
323 |
if (loaded++ == 0) |
| 322 |
NULL, NULL, NULL, NULL, 0, 0); |
324 |
vtnet_tx_header_zone = uma_zcreate("vtnet_tx_hdr", |
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325 |
sizeof(struct vtnet_tx_header), |
| 326 |
NULL, NULL, NULL, NULL, 0, 0); |
| 327 |
sx_xunlock(&mlu); |
| 323 |
break; |
328 |
break; |
| 324 |
case MOD_QUIESCE: |
329 |
case MOD_QUIESCE: |
| 325 |
case MOD_UNLOAD: |
330 |
case MOD_UNLOAD: |
| 326 |
if (uma_zone_get_cur(vtnet_tx_header_zone) > 0) |
331 |
sx_xlock(&mlu); |
| 327 |
error = EBUSY; |
332 |
if (--loaded == 0) { |
| 328 |
else if (type == MOD_UNLOAD) { |
333 |
if (uma_zone_get_cur(vtnet_tx_header_zone) > 0) |
| 329 |
uma_zdestroy(vtnet_tx_header_zone); |
334 |
error = EBUSY; |
| 330 |
vtnet_tx_header_zone = NULL; |
335 |
else if (type == MOD_UNLOAD) { |
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336 |
uma_zdestroy(vtnet_tx_header_zone); |
| 337 |
vtnet_tx_header_zone = NULL; |
| 338 |
} |
| 331 |
} |
339 |
} |
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340 |
sx_xunlock(&mlu); |
| 332 |
break; |
341 |
break; |
| 333 |
case MOD_SHUTDOWN: |
342 |
case MOD_SHUTDOWN: |
| 334 |
break; |
343 |
break; |