Acked-by: Chengwen Feng <fengcheng...@huawei.com>
On 2024/9/6 0:20, Stephen Hemminger wrote:
> The TAP and XDP driver both are limited to only 8 queues when
> because of the small limit imposed by EAL. Increase the limit
> now since this release allows changing ABI.
>
> Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
> ---
> doc/guides/rel_notes/release_24_11.rst | 5 +++++
> lib/eal/include/rte_eal.h | 2 +-
> 2 files changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/doc/guides/rel_notes/release_24_11.rst
> b/doc/guides/rel_notes/release_24_11.rst
> index 0ff70d9057..5af70e04c5 100644
> --- a/doc/guides/rel_notes/release_24_11.rst
> +++ b/doc/guides/rel_notes/release_24_11.rst
> @@ -100,6 +100,11 @@ ABI Changes
> Also, make sure to start the actual text at the margin.
> =======================================================
>
> +* The maximum number of file descriptors that can be passed to a secondary
> process
> + has been increased from 8 to 253 (which is the maximum possible with Unix
> domain
> + socket). This allows for more queues when using software devices such as
> TAP
> + and XDP.
> +
>
> Known Issues
> ------------
> diff --git a/lib/eal/include/rte_eal.h b/lib/eal/include/rte_eal.h
> index c2256f832e..c826e143f1 100644
> --- a/lib/eal/include/rte_eal.h
> +++ b/lib/eal/include/rte_eal.h
> @@ -155,7 +155,7 @@ int rte_eal_primary_proc_alive(const char
> *config_file_path);
> */
> bool rte_mp_disable(void);
>
> -#define RTE_MP_MAX_FD_NUM 8 /* The max amount of fds */
> +#define RTE_MP_MAX_FD_NUM 253 /* The max amount of fds (see SCM_MAX_FD)
> */
> #define RTE_MP_MAX_NAME_LEN 64 /* The max length of action name */
> #define RTE_MP_MAX_PARAM_LEN 256 /* The max length of param */
> struct rte_mp_msg {
>
