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env/pci: cleanup spdk_detach_rte by moving code

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Change-Id: I1dee015e44ecfbd7fcb1680cce0e6d527d083c99
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1728
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Darek Stojaczyk 2020-04-02 12:42:14 +02:00 committed by Tomasz Zawadzki
parent 9db8040738
commit 23a7e4b94f
1 changed files with 32 additions and 31 deletions
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63
lib/env_dpdk/pci.c
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@ -131,43 +131,44 @@ spdk_detach_rte(struct spdk_pci_device *dev)
* again while we go asynchronous, so we explicitly forbid that.
*/
dev->internal.pending_removal = true;
if (spdk_process_is_primary() && !pthread_equal(g_dpdk_tid, pthread_self())) {
rte_eal_alarm_set(1, spdk_detach_rte_cb, rte_dev);
/* wait up to 2s for the cb to finish executing */
for (i = 2000; i > 0; i--) {
if (!spdk_process_is_primary() || pthread_equal(g_dpdk_tid, pthread_self())) {
spdk_detach_rte_cb(rte_dev);
return;
}
spdk_delay_us(1000);
pthread_mutex_lock(&g_pci_mutex);
removed = dev->internal.removed;
pthread_mutex_unlock(&g_pci_mutex);
rte_eal_alarm_set(1, spdk_detach_rte_cb, rte_dev);
/* wait up to 2s for the cb to finish executing */
for (i = 2000; i > 0; i--) {
if (removed) {
break;
}
}
/* besides checking the removed flag, we also need to wait
* for the dpdk detach function to unwind, as it's doing some
* operations even after calling our detach callback. Simply
* cancel the alarm - if it started executing already, this
* call will block and wait for it to finish.
*/
rte_eal_alarm_cancel(spdk_detach_rte_cb, rte_dev);
/* the device could have been finally removed, so just check
* it again.
*/
spdk_delay_us(1000);
pthread_mutex_lock(&g_pci_mutex);
removed = dev->internal.removed;
pthread_mutex_unlock(&g_pci_mutex);
if (!removed) {
fprintf(stderr, "Timeout waiting for DPDK to remove PCI device %s.\n",
rte_dev->name);
/* If we reach this state, then the device couldn't be removed and most likely
a subsequent hot add of a device in the same BDF will fail */
if (removed) {
break;
}
} else {
spdk_detach_rte_cb(rte_dev);
}
/* besides checking the removed flag, we also need to wait
* for the dpdk detach function to unwind, as it's doing some
* operations even after calling our detach callback. Simply
* cancel the alarm - if it started executing already, this
* call will block and wait for it to finish.
*/
rte_eal_alarm_cancel(spdk_detach_rte_cb, rte_dev);
/* the device could have been finally removed, so just check
* it again.
*/
pthread_mutex_lock(&g_pci_mutex);
removed = dev->internal.removed;
pthread_mutex_unlock(&g_pci_mutex);
if (!removed) {
fprintf(stderr, "Timeout waiting for DPDK to remove PCI device %s.\n",
rte_dev->name);
/* If we reach this state, then the device couldn't be removed and most likely
a subsequent hot add of a device in the same BDF will fail */
}
}