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lib/nvmf: add a global list of targets

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As part of moving the nvmf rpc code to the library, we will need to make
it more inclusive of use cases outside of the example spdk nvmf_tgt
application. That application only supports a single nvmf target
structure. As such, many of the RPCs have this assumption built into
them.
In order to enable the multi-target use case, we need to configure a way
to translate between user supplied RPCs and actual target objects in the
library.

Change-Id: I5d3745afe9c2ca1c33f6e1a1bcc2b8bb3196ccd6
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/465329
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
This commit is contained in:
Seth Howell 2019-08-15 09:52:20 -07:00 committed by Jim Harris
parent 4ce77af64c
commit 0ac5050624
2 changed files with 8 additions and 0 deletions
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6
lib/nvmf/nvmf.c
View File

@ -51,6 +51,8 @@ SPDK_LOG_REGISTER_COMPONENT("nvmf", SPDK_LOG_NVMF)
#define SPDK_NVMF_DEFAULT_MAX_SUBSYSTEMS 1024
static TAILQ_HEAD(, spdk_nvmf_tgt) g_nvmf_tgts = TAILQ_HEAD_INITIALIZER(g_nvmf_tgts);
typedef void (*nvmf_qpair_disconnect_cpl)(void *ctx, int status);
static void spdk_nvmf_tgt_destroy_poll_group(void *io_device, void *ctx_buf);
@ -243,6 +245,8 @@ spdk_nvmf_tgt_create(uint32_t max_subsystems)
return NULL;
}
TAILQ_INSERT_HEAD(&g_nvmf_tgts, tgt, link);
spdk_io_device_register(tgt,
spdk_nvmf_tgt_create_poll_group,
spdk_nvmf_tgt_destroy_poll_group,
@ -297,6 +301,8 @@ spdk_nvmf_tgt_destroy(struct spdk_nvmf_tgt *tgt,
tgt->destroy_cb_fn = cb_fn;
tgt->destroy_cb_arg = cb_arg;
TAILQ_REMOVE(&g_nvmf_tgts, tgt, link);
spdk_io_device_unregister(tgt, spdk_nvmf_tgt_destroy_cb);
}

2
lib/nvmf/nvmf_internal.h
View File

@ -87,6 +87,8 @@ struct spdk_nvmf_tgt {
spdk_nvmf_tgt_destroy_done_fn *destroy_cb_fn;
void *destroy_cb_arg;
TAILQ_ENTRY(spdk_nvmf_tgt) link;
};
struct spdk_nvmf_host {