From 8dc775d8b1d73dca0a942e4233d0930414434e82 Mon Sep 17 00:00:00 2001 From: Matan Azrad Date: Thu, 15 Oct 2020 06:38:12 +0000 Subject: [PATCH] net/mlx5: fix event queue number query When a Rx\Tx queue is created by DevX, its CQ configuration should include the EQ number of the interrupts. The EQ is managed by the kernel and there is a glue API in order to query the EQ number from the kernel. The EQ query API gets a vector number specifies the kernel vector of the interrupt handling. The vector number was wrongly detected according to the configuration CPU instead of using the device attributes of the supported vectors. The CPU was wrongly detected by the rte_lcore_to_cpu_id API without any check, and in case of non-EAL thread context the value was 0xFFFFFFFF which caused a failure in the EQ number query API. Use vector 0 for each EQ number query which must be supported by the kernel. Fixes: 08d1838f645a ("net/mlx5: implement CQ for Rx using DevX API") Fixes: d133f4cdb706 ("net/mlx5: create clock queue for packet pacing") Cc: stable@dpdk.org Signed-off-by: Matan Azrad Acked-by: Viacheslav Ovsiienko --- drivers/net/mlx5/mlx5.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 77aeac85c5..74a537b164 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -947,10 +947,8 @@ mlx5_alloc_shared_dev_ctx(const struct mlx5_dev_spawn_data *spawn, goto error; } if (sh->devx) { - uint32_t lcore = (uint32_t)rte_lcore_to_cpu_id(-1); - /* Query the EQN for this core. */ - err = mlx5_glue->devx_query_eqn(sh->ctx, lcore, &sh->eqn); + err = mlx5_glue->devx_query_eqn(sh->ctx, 0, &sh->eqn); if (err) { rte_errno = errno; DRV_LOG(ERR, "Failed to query event queue number %d.", -- 2.20.1