patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Rasesh Mody <rmody@marvell.com>, dev@dpdk.org, jerinj@marvell.com
Cc: GR-Everest-DPDK-Dev@marvell.com, stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH v2 2/2] examples/kni: fix MTU change to setup Tx queue
Date: Thu, 14 May 2020 16:33:29 +0100
Message-ID: <8d7ab22c-f986-3e79-c9a6-384bf10e86b9@intel.com> (raw)
In-Reply-To: <20200514040938.25505-2-rmody@marvell.com>

On 5/14/2020 5:09 AM, Rasesh Mody wrote:
> This patch adds a fix to setup Tx queue when changing KNI interface MTU.
> It ensures device can safely start txq post MTU change operation.
> 
> Fixes: fc9ee41b7016 ("examples/kni: convert to new ethdev offloads API")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Rasesh Mody <rmody@marvell.com>
> ---
>  examples/kni/main.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/examples/kni/main.c b/examples/kni/main.c
> index 6b4ab3b5b..7a927a50c 100644
> --- a/examples/kni/main.c
> +++ b/examples/kni/main.c
> @@ -774,9 +774,11 @@ kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
>  {
>  	int ret;
>  	uint16_t nb_rxd = NB_RXD;
> +	uint16_t nb_txd = NB_TXD;
>  	struct rte_eth_conf conf;
>  	struct rte_eth_dev_info dev_info;
>  	struct rte_eth_rxconf rxq_conf;
> +	struct rte_eth_txconf txq_conf;
>  
>  	if (!rte_eth_dev_is_valid_port(port_id)) {
>  		RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
> @@ -804,7 +806,7 @@ kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
>  		return ret;
>  	}
>  
> -	ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, NULL);
> +	ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd);
>  	if (ret < 0)
>  		rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
>  				"for port%u (%d)\n", (unsigned int)port_id,
> @@ -829,6 +831,16 @@ kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
>  		return ret;
>  	}
>  
> +	txq_conf = dev_info.default_txconf;
> +	txq_conf.offloads = conf.txmode.offloads;
> +	ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd,
> +		rte_eth_dev_socket_id(port_id), &txq_conf);
> +	if (ret < 0) {
> +		RTE_LOG(ERR, APP, "Fail to setup Tx queue of port %d\n",
> +				port_id);
> +		return ret;
> +	}
> +
>  	/* Restart specific port */
>  	ret = rte_eth_dev_start(port_id);
>  	if (ret < 0) {
> 

Hi Rasesh,

The change looks OK but I am trying to understand the need for it, already asked
in other tread, will follow there.

  reply	other threads:[~2020-05-14 15:33 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05  3:09 [dpdk-stable] [PATCH 1/2] net/qede: fix assignment of Rx/Tx handlers Rasesh Mody
2020-05-05  9:01 ` Ferruh Yigit
2020-05-06  2:34   ` [dpdk-stable] [EXT] " Rasesh Mody
2020-05-14  4:09 ` [dpdk-stable] [PATCH v2 " Rasesh Mody
2020-05-14  4:09 ` [dpdk-stable] [PATCH v2 2/2] examples/kni: fix MTU change to setup Tx queue Rasesh Mody
2020-05-14 15:33   ` Ferruh Yigit [this message]
2020-05-15 11:29   ` Ferruh Yigit
2020-05-19 16:31     ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2020-05-15  6:34 ` [dpdk-stable] [PATCH v3 1/2] net/qede: fix assignment of Rx/Tx handlers Rasesh Mody
2020-05-15 12:26   ` [dpdk-stable] [dpdk-dev] " Jerin Jacob
2020-05-15  6:34 ` [dpdk-stable] [PATCH v3 2/2] net/qede: fix port reconfiguration Rasesh Mody

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=8d7ab22c-f986-3e79-c9a6-384bf10e86b9@intel.com \
    --to=ferruh.yigit@intel.com \
    --cc=GR-Everest-DPDK-Dev@marvell.com \
    --cc=dev@dpdk.org \
    --cc=jerinj@marvell.com \
    --cc=rmody@marvell.com \
    --cc=stable@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git