From: "Nélio Laranjeiro" <nelio.laranjeiro@6wind.com>
To: Yongseok Koh <yskoh@mellanox.com>
Cc: ferruh.yigit@intel.com, dev@dpdk.org, adrien.mazarguil@6wind.com,
stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH] net/mlx5: fix reusing Rx/Tx queues
Date: Tue, 21 Mar 2017 09:03:41 +0100 [thread overview]
Message-ID: <20170321080341.GL12013@autoinstall.dev.6wind.com> (raw)
In-Reply-To: <20170320233804.47489-1-yskoh@mellanox.com>
Yongseok,
Please see few comments below
On Mon, Mar 20, 2017 at 04:38:04PM -0700, Yongseok Koh wrote:
> When configuring Rx/Tx queue, if queue already exists, it is reused. But if
> the queue size is changed, it must be resized to not access/overwrite
> invalid memory.
>
> Fixes: 2e22920b85d9 ("mlx5: support non-scattered Tx and Rx")
>
> CC: stable@dpdk.org
> Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
> ---
> drivers/net/mlx5/mlx5_rxq.c | 13 +++++++++++++
> drivers/net/mlx5/mlx5_txq.c | 13 +++++++++++++
> 2 files changed, 26 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
> index e6070a0e5..aa28efc3d 100644
> --- a/drivers/net/mlx5/mlx5_rxq.c
> +++ b/drivers/net/mlx5/mlx5_rxq.c
> @@ -1261,6 +1261,19 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
> }
> (*priv->rxqs)[idx] = NULL;
> rxq_cleanup(rxq_ctrl);
> + /* Resize if rxq size is chagned. */
Typo in the comment (chagned instead of change).
> + if (rxq_ctrl->rxq.elts_n != log2above(desc)) {
> + rxq_ctrl = rte_realloc(rxq_ctrl,
> + sizeof(*rxq_ctrl) +
> + desc * sizeof(struct rte_mbuf *),
> + RTE_CACHE_LINE_SIZE);
> + if (!rxq_ctrl) {
> + ERROR("%p: unable to reallocate queue index %u",
> + (void *)dev, idx);
> + priv_unlock(priv);
> + return -ENOMEM;
> + }
> + }
> } else {
> rxq_ctrl = rte_calloc_socket("RXQ", 1, sizeof(*rxq_ctrl) +
> desc * sizeof(struct rte_mbuf *),
> diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
> index bbfce756b..371dcd2f6 100644
> --- a/drivers/net/mlx5/mlx5_txq.c
> +++ b/drivers/net/mlx5/mlx5_txq.c
> @@ -532,6 +532,19 @@ mlx5_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
> }
> (*priv->txqs)[idx] = NULL;
> txq_cleanup(txq_ctrl);
> + /* Resize if txq size is chagned. */
Same here.
> + if (txq_ctrl->txq.elts_n != log2above(desc)) {
> + txq_ctrl = rte_realloc(txq_ctrl,
> + sizeof(*txq_ctrl) +
> + desc * sizeof(struct rte_mbuf *),
> + RTE_CACHE_LINE_SIZE);
> + if (!txq_ctrl) {
> + ERROR("%p: unable to reallocate queue index %u",
> + (void *)dev, idx);
> + priv_unlock(priv);
> + return -ENOMEM;
> + }
> + }
> } else {
> txq_ctrl =
> rte_calloc_socket("TXQ", 1,
> --
> 2.11.0
By the same time, can you also fix the indentation please?
Thanks,
--
Nélio Laranjeiro
6WIND
next prev parent reply other threads:[~2017-03-21 8:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-20 23:38 Yongseok Koh
2017-03-21 8:03 ` Nélio Laranjeiro [this message]
2017-03-21 17:50 ` [dpdk-stable] [PATCH v2] " Yongseok Koh
2017-03-22 7:50 ` Nélio Laranjeiro
2017-03-22 14:56 ` Ferruh Yigit
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