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env: register PMDs on associated first probe

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This avoids registering PMDs that are not used by a given
application.  For example, an app may wish to *not* use
ioat - in this case, ioat PMD would not be registered with
DPDK, and we would not waste time probing these devices
when probing other devices like NVMe.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: If378e40bde9057c7808603aa1918bcfe80fa0e9d
This commit is contained in:
Jim Harris 2017-03-06 11:09:41 -07:00
parent a8bfa65ff2
commit 16bbcb3f36
4 changed files with 15 additions and 46 deletions
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1
lib/env_dpdk/env_internal.h
View File

@ -61,6 +61,7 @@ struct spdk_pci_enum_ctx {
spdk_pci_enum_cb cb_fn;
void *cb_arg;
pthread_mutex_t mtx;
bool is_registered;
};
int spdk_pci_device_init(struct rte_pci_driver *driver, struct rte_pci_device *device);

10
lib/env_dpdk/pci.c
View File

@ -108,6 +108,11 @@ spdk_pci_device_attach(struct spdk_pci_enum_ctx *ctx,
pthread_mutex_lock(&ctx->mtx);
if (!ctx->is_registered) {
ctx->is_registered = true;
rte_eal_pci_register(&ctx->driver);
}
ctx->cb_fn = enum_cb;
ctx->cb_arg = enum_ctx;
@ -136,6 +141,11 @@ spdk_pci_enumerate(struct spdk_pci_enum_ctx *ctx,
{
pthread_mutex_lock(&ctx->mtx);
if (!ctx->is_registered) {
ctx->is_registered = true;
rte_eal_pci_register(&ctx->driver);
}
ctx->cb_fn = enum_cb;
ctx->cb_arg = enum_ctx;

25
lib/env_dpdk/pci_ioat.c
View File

@ -95,6 +95,7 @@ static struct spdk_pci_enum_ctx g_ioat_pci_drv = {
#if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
.probe = spdk_pci_device_init,
.remove = spdk_pci_device_fini,
.driver.name = "spdk_ioat",
#else
.devinit = spdk_pci_device_init,
.devuninit = spdk_pci_device_fini,
@ -105,31 +106,9 @@ static struct spdk_pci_enum_ctx g_ioat_pci_drv = {
.cb_fn = NULL,
.cb_arg = NULL,
.mtx = PTHREAD_MUTEX_INITIALIZER,
.is_registered = false,
};
#if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
RTE_PMD_REGISTER_PCI(spdk_ioat, g_ioat_pci_drv.driver);
#else
static int
spdk_ioat_drv_register(const char *name __rte_unused, const char *params __rte_unused)
{
rte_eal_pci_register(&g_ioat_pci_drv.driver);
return 0;
}
static struct rte_driver g_ioat_drv = {
.type = PMD_PDEV,
.init = spdk_ioat_drv_register,
};
#if RTE_VERSION >= RTE_VERSION_NUM(16, 7, 0, 0)
PMD_REGISTER_DRIVER(g_ioat_drv, spdk_ioat);
#else
PMD_REGISTER_DRIVER(g_ioat_drv);
#endif
#endif
int
spdk_pci_ioat_device_attach(spdk_pci_enum_cb enum_cb, void *enum_ctx,
struct spdk_pci_addr *pci_address)

25
lib/env_dpdk/pci_nvme.c
View File

@ -57,6 +57,7 @@ static struct spdk_pci_enum_ctx g_nvme_pci_drv = {
#if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
.probe = spdk_pci_device_init,
.remove = spdk_pci_device_fini,
.driver.name = "spdk_nvme",
#else
.devinit = spdk_pci_device_init,
.devuninit = spdk_pci_device_fini,
@ -67,31 +68,9 @@ static struct spdk_pci_enum_ctx g_nvme_pci_drv = {
.cb_fn = NULL,
.cb_arg = NULL,
.mtx = PTHREAD_MUTEX_INITIALIZER,
.is_registered = false,
};
#if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
RTE_PMD_REGISTER_PCI(spdk_nvme, g_nvme_pci_drv.driver);
#else
static int
spdk_nvme_drv_register(const char *name __rte_unused, const char *params __rte_unused)
{
rte_eal_pci_register(&g_nvme_pci_drv.driver);
return 0;
}
static struct rte_driver g_nvme_drv = {
.type = PMD_PDEV,
.init = spdk_nvme_drv_register,
};
#if RTE_VERSION >= RTE_VERSION_NUM(16, 7, 0, 0)
PMD_REGISTER_DRIVER(g_nvme_drv, spdk_nvme);
#else
PMD_REGISTER_DRIVER(g_nvme_drv);
#endif
#endif
int
spdk_pci_nvme_device_attach(spdk_pci_enum_cb enum_cb,
void *enum_ctx, struct spdk_pci_addr *pci_address)