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env_dpdk: add spdk_env_dpdk_external_init()

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This function indicates whether DPDK was initialized
external to the SPDK env_dpdk library.

This can be used in cases where we need to implement
different behavior when DPDK is initialized outside
of SPDK - in that case certain flags that SPDK would
prefer may not have been specified.  This will
be used in the next patch.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I58d285bd4d9cda96b108624d65dedbec32164cfe

Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/446458
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Jim Harris 2019-02-27 10:52:47 -07:00
parent d631b855ff
commit 725f9de39a
2 changed files with 17 additions and 0 deletions
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8
include/spdk/env_dpdk.h
View File

@ -52,6 +52,14 @@ extern "C" {
*/
int spdk_env_dpdk_post_init(void);
/**
* Check if DPDK was initialized external to the SPDK env_dpdk library.
*
* \return true if DPDK was initialized external to the SPDK env_dpdk library.
* \return false otherwise
*/
bool spdk_env_dpdk_external_init(void);
#ifdef __cplusplus
}
#endif

9
lib/env_dpdk/init.c
View File

@ -50,6 +50,7 @@
static char **g_eal_cmdline;
static int g_eal_cmdline_argcount;
static bool g_external_init = true;
static char *
_sprintf_alloc(const char *format, ...)
@ -395,6 +396,8 @@ spdk_env_init(const struct spdk_env_opts *opts)
int i, rc;
int orig_optind;
g_external_init = false;
rc = spdk_build_eal_cmdline(opts);
if (rc < 0) {
fprintf(stderr, "Invalid arguments to initialize DPDK\n");
@ -445,3 +448,9 @@ spdk_env_init(const struct spdk_env_opts *opts)
return spdk_env_dpdk_post_init();
}
bool
spdk_env_dpdk_external_init(void)
{
return g_external_init;
}