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mlx4: allow application to partially fork

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Although using the PMD from a forked process is still unsupported, this
commit makes Verbs safe enough for applications to call fork() for other
purposes.

Signed-off-by: Olga Shern <olgas@mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
This commit is contained in:
Olga Shern 2015-06-30 11:27:52 +02:00 committed by Thomas Monjalon
parent decb879408
commit 643777a171
1 changed files with 8 additions and 0 deletions
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8
drivers/net/mlx4/mlx4.c
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@ -4686,6 +4686,14 @@ rte_mlx4_pmd_init(const char *name, const char *args)
{
(void)name;
(void)args;
/*
* RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
* huge pages. Calling ibv_fork_init() during init allows
* applications to use fork() safely for purposes other than
* using this PMD, which is not supported in forked processes.
*/
setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
ibv_fork_init();
rte_eal_pci_register(&mlx4_driver.pci_drv);
return 0;
}