From: Shahaf Shuler Date: Sun, 10 Mar 2019 08:28:01 +0000 (+0200) Subject: net/mlx5: refactor external memory registration X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0f132546a8743d7629924754390229306e0bd550;p=dpdk.git net/mlx5: refactor external memory registration Move the memory region creation to a separate function to prepare the ground for the reuse of it on the PCI driver map and unmap functions. Signed-off-by: Shahaf Shuler --- diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c index 700d83d1bc..43ee9c961b 100644 --- a/drivers/net/mlx5/mlx5_mr.c +++ b/drivers/net/mlx5/mlx5_mr.c @@ -1108,6 +1108,58 @@ mlx5_mr_flush_local_cache(struct mlx5_mr_ctrl *mr_ctrl) (void *)mr_ctrl, mr_ctrl->cur_gen); } +/** + * Creates a memory region for external memory, that is memory which is not + * part of the DPDK memory segments. + * + * @param dev + * Pointer to the ethernet device. + * @param addr + * Starting virtual address of memory. + * @param len + * Length of memory segment being mapped. + * @param socked_id + * Socket to allocate heap memory for the control structures. + * + * @return + * Pointer to MR structure on success, NULL otherwise. + */ +static struct mlx5_mr * +mlx5_create_mr_ext(struct rte_eth_dev *dev, uintptr_t addr, size_t len, + int socket_id) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct mlx5_mr *mr = NULL; + + mr = rte_zmalloc_socket(NULL, + RTE_ALIGN_CEIL(sizeof(*mr), + RTE_CACHE_LINE_SIZE), + RTE_CACHE_LINE_SIZE, socket_id); + if (mr == NULL) + return NULL; + mr->ibv_mr = mlx5_glue->reg_mr(priv->pd, (void *)addr, len, + IBV_ACCESS_LOCAL_WRITE); + if (mr->ibv_mr == NULL) { + DRV_LOG(WARNING, + "port %u fail to create a verbs MR for address (%p)", + dev->data->port_id, (void *)addr); + rte_free(mr); + return NULL; + } + mr->msl = NULL; /* Mark it is external memory. */ + mr->ms_bmp = NULL; + mr->ms_n = 1; + mr->ms_bmp_n = 1; + DRV_LOG(DEBUG, + "port %u MR CREATED (%p) for external memory %p:\n" + " [0x%" PRIxPTR ", 0x%" PRIxPTR ")," + " lkey=0x%x base_idx=%u ms_n=%u, ms_bmp_n=%u", + dev->data->port_id, (void *)mr, (void *)addr, + addr, addr + len, rte_cpu_to_be_32(mr->ibv_mr->lkey), + mr->ms_base_idx, mr->ms_n, mr->ms_bmp_n); + return mr; +} + /** * Called during rte_mempool_mem_iter() by mlx5_mr_update_ext_mp(). * @@ -1142,43 +1194,19 @@ mlx5_mr_update_ext_mp_cb(struct rte_mempool *mp, void *opaque, rte_rwlock_read_unlock(&priv->mr.rwlock); if (lkey != UINT32_MAX) return; - mr = rte_zmalloc_socket(NULL, - RTE_ALIGN_CEIL(sizeof(*mr), - RTE_CACHE_LINE_SIZE), - RTE_CACHE_LINE_SIZE, mp->socket_id); - if (mr == NULL) { - DRV_LOG(WARNING, - "port %u unable to allocate memory for a new MR of" - " mempool (%s).", - dev->data->port_id, mp->name); - data->ret = -1; - return; - } DRV_LOG(DEBUG, "port %u register MR for chunk #%d of mempool (%s)", dev->data->port_id, mem_idx, mp->name); - mr->ibv_mr = mlx5_glue->reg_mr(priv->pd, (void *)addr, len, - IBV_ACCESS_LOCAL_WRITE); - if (mr->ibv_mr == NULL) { + mr = mlx5_create_mr_ext(dev, addr, len, mp->socket_id); + if (!mr) { DRV_LOG(WARNING, - "port %u fail to create a verbs MR for address (%p)", - dev->data->port_id, (void *)addr); - rte_free(mr); + "port %u unable to allocate a new MR of" + " mempool (%s).", + dev->data->port_id, mp->name); data->ret = -1; return; } - mr->msl = NULL; /* Mark it is external memory. */ - mr->ms_bmp = NULL; - mr->ms_n = 1; - mr->ms_bmp_n = 1; rte_rwlock_write_lock(&priv->mr.rwlock); LIST_INSERT_HEAD(&priv->mr.mr_list, mr, mr); - DRV_LOG(DEBUG, - "port %u MR CREATED (%p) for external memory %p:\n" - " [0x%" PRIxPTR ", 0x%" PRIxPTR ")," - " lkey=0x%x base_idx=%u ms_n=%u, ms_bmp_n=%u", - dev->data->port_id, (void *)mr, (void *)addr, - addr, addr + len, rte_cpu_to_be_32(mr->ibv_mr->lkey), - mr->ms_base_idx, mr->ms_n, mr->ms_bmp_n); /* Insert to the global cache table. */ mr_insert_dev_cache(dev, mr); rte_rwlock_write_unlock(&priv->mr.rwlock);