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nvmf: only save PCI address in direct ctrlr data

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The NVMe over Fabrics target was storing the PCI device pointer for each
direct-mode controller, but it only really needs the PCI address, which
is exposed via the get_nvmf_subsystems RPC.

Also update the same code path to use the new spdk_pci_device_get_addr()
function for brevity.

Change-Id: I0708b3331b7c279c1a86f0d7459b5deb40dd7c89
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-10-31 15:43:02 -07:00
parent ed1e7ca2d7
commit fd6ebca7a8
4 changed files with 13 additions and 17 deletions
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11
app/nvmf_tgt/conf.c
View File

@ -366,19 +366,16 @@ attach_cb(void *cb_ctx, struct spdk_pci_device *dev, struct spdk_nvme_ctrlr *ctr
const struct spdk_nvme_ctrlr_opts *opts)
{
struct spdk_nvmf_probe_ctx *ctx = cb_ctx;
uint16_t found_domain = spdk_pci_device_get_domain(dev);
uint8_t found_bus = spdk_pci_device_get_bus(dev);
uint8_t found_dev = spdk_pci_device_get_dev(dev);
uint8_t found_func = spdk_pci_device_get_func(dev);
struct spdk_pci_addr pci_addr = spdk_pci_device_get_addr(dev);
int rc;
char path[MAX_STRING_LEN];
int numa_node = -1;
SPDK_NOTICELOG("Attaching NVMe device %p at %x:%x:%x.%x to subsystem %p\n",
ctrlr, found_domain, found_bus, found_dev, found_func, ctx->subsystem);
ctrlr, pci_addr.domain, pci_addr.bus, pci_addr.dev, pci_addr.func, ctx->subsystem);
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%1u/numa_node",
found_domain, found_bus, found_dev, found_func);
pci_addr.domain, pci_addr.bus, pci_addr.dev, pci_addr.func);
numa_node = spdk_get_numa_node_value(path);
if (numa_node >= 0) {
@ -391,7 +388,7 @@ attach_cb(void *cb_ctx, struct spdk_pci_device *dev, struct spdk_nvme_ctrlr *ctr
}
}
rc = nvmf_subsystem_add_ctrlr(ctx->subsystem, ctrlr, dev);
rc = nvmf_subsystem_add_ctrlr(ctx->subsystem, ctrlr, &pci_addr);
if (rc < 0) {
SPDK_ERRLOG("Failed to add controller to subsystem\n");
}

9
app/nvmf_tgt/nvmf_rpc.c
View File

@ -101,13 +101,12 @@ dump_nvmf_subsystem(struct spdk_json_write_ctx *w, struct nvmf_tgt_subsystem *tg
if (subsystem->subtype == SPDK_NVMF_SUBTYPE_NVME) {
if (subsystem->mode == NVMF_SUBSYSTEM_MODE_DIRECT) {
char pci_str[20];
struct spdk_pci_device *dev = subsystem->dev.direct.pci_dev;
snprintf(pci_str, sizeof(pci_str), "%04x:%02x:%02x.%x",
spdk_pci_device_get_domain(dev),
spdk_pci_device_get_bus(dev),
spdk_pci_device_get_dev(dev),
spdk_pci_device_get_func(dev));
subsystem->dev.direct.pci_addr.domain,
subsystem->dev.direct.pci_addr.bus,
subsystem->dev.direct.pci_addr.dev,
subsystem->dev.direct.pci_addr.func);
spdk_json_write_name(w, "pci_address");
spdk_json_write_string(w, pci_str);

6
include/spdk/nvmf.h
View File

@ -40,6 +40,7 @@
#include <stdint.h>
#include "spdk/env.h"
#include "spdk/nvmf_spec.h"
#include "spdk/queue.h"
@ -65,7 +66,6 @@ struct spdk_nvme_ctrlr;
struct spdk_nvmf_transport;
struct spdk_nvmf_request;
struct spdk_nvmf_conn;
struct spdk_pci_device;
typedef void (*spdk_nvmf_subsystem_connect_fn)(void *cb_ctx, struct spdk_nvmf_request *req);
typedef void (*spdk_nvmf_subsystem_disconnect_fn)(void *cb_ctx, struct spdk_nvmf_conn *conn);
@ -130,7 +130,7 @@ struct spdk_nvmf_subsystem {
struct {
struct spdk_nvme_ctrlr *ctrlr;
struct spdk_nvme_qpair *io_qpair;
struct spdk_pci_device *pci_dev;
struct spdk_pci_addr pci_addr;
} direct;
struct {
@ -183,7 +183,7 @@ spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem,
int
nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem,
struct spdk_nvme_ctrlr *ctrlr, struct spdk_pci_device *dev);
struct spdk_nvme_ctrlr *ctrlr, const struct spdk_pci_addr *pci_addr);
void spdk_nvmf_subsystem_poll(struct spdk_nvmf_subsystem *subsystem);

4
lib/nvmf/subsystem.c
View File

@ -261,10 +261,10 @@ spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem, char *host_n
int
nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem,
struct spdk_nvme_ctrlr *ctrlr, struct spdk_pci_device *dev)
struct spdk_nvme_ctrlr *ctrlr, const struct spdk_pci_addr *pci_addr)
{
subsystem->dev.direct.ctrlr = ctrlr;
subsystem->dev.direct.pci_dev = dev;
subsystem->dev.direct.pci_addr = *pci_addr;
/* Assume that all I/O will be handled on one thread for now */
subsystem->dev.direct.io_qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, 0);
if (subsystem->dev.direct.io_qpair == NULL) {