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nvme: Add support of hot remove vfio-attached devices in pcie layer.

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Change-Id: Ia7d6ca2d6c0bec6345f05718f6a6328eccda2dcc
Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
Reviewed-on: https://review.gerrithub.io/391329
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Cunyin Chang 2017-12-12 10:32:33 +08:00 committed by Jim Harris
parent 2966839dd9
commit 6e82aa5ace
2 changed files with 19 additions and 1 deletions
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14
lib/nvme/nvme_pcie.c
View File

@ -235,9 +235,10 @@ static int
_nvme_pcie_hotplug_monitor(void *cb_ctx, spdk_nvme_probe_cb probe_cb,
spdk_nvme_remove_cb remove_cb)
{
struct spdk_nvme_ctrlr *ctrlr;
struct spdk_nvme_ctrlr *ctrlr, *tmp;
struct spdk_uevent event;
struct spdk_pci_addr pci_addr;
union spdk_nvme_csts_register csts;
while (spdk_get_uevent(hotplug_fd, &event) > 0) {
if (event.subsystem == SPDK_NVME_UEVENT_SUBSYSTEM_UIO ||
@ -275,6 +276,17 @@ _nvme_pcie_hotplug_monitor(void *cb_ctx, spdk_nvme_probe_cb probe_cb,
}
}
}
/* This is a work around for vfio-attached device hot remove detection. */
TAILQ_FOREACH_SAFE(ctrlr, &g_spdk_nvme_driver->shared_attached_ctrlrs, tailq, tmp) {
csts = spdk_nvme_ctrlr_get_regs_csts(ctrlr);
if (csts.raw == 0xffffffffU) {
nvme_ctrlr_fail(ctrlr, true);
nvme_robust_mutex_unlock(&g_spdk_nvme_driver->lock);
remove_cb(cb_ctx, ctrlr);
nvme_robust_mutex_lock(&g_spdk_nvme_driver->lock);
}
}
return 0;
}

6
test/unit/lib/nvme/nvme_pcie.c/nvme_pcie_ut.c
View File

@ -274,6 +274,12 @@ spdk_nvme_get_ctrlr_by_trid_unsafe(const struct spdk_nvme_transport_id *trid)
return NULL;
}
union spdk_nvme_csts_register spdk_nvme_ctrlr_get_regs_csts(struct spdk_nvme_ctrlr *ctrlr)
{
union spdk_nvme_csts_register csts = {};
return csts;
}
#if 0 /* TODO: update PCIe-specific unit test */
static void