patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Peng Zhang <peng.zhang@corigine.com>
To: dev@dpdk.org
Cc: heinrich.kuhn@corigine.com, Peng Zhang <peng.zhang@corigine.com>,
	stable@dpdk.org, Chaoyong He <chaoyong.he@corigine.com>,
	Louis Peens <louis.peens@corigine.com>
Subject: [PATCH v2] net/nfp: fix mtu settings
Date: Fri, 18 Mar 2022 13:38:19 +0200
Message-ID: <20220318113819.885476-1-peng.zhang@corigine.com> (raw)
In-Reply-To: <20220317143917.499138-1-peng.zhang@corigine.com>

1.When the setting mtu is higher than flbufsz, the mtu doesn't work.
But it doesn't have any notice about this restrict.
2.add the min_mtu and max_mtu in the nfp_net_infos_get() to avoid
the setting mtu isn't in the range

This patch will add these restrict of nfp mtu.

Fixes: d4a27a3 ("nfp: add basic features")
Cc: stable@dpdk.org

Signed-off-by: Peng Zhang <peng.zhang@corigine.com>
Signed-off-by: Chaoyong He <chaoyong.he@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
---
v2:
* add the min_mtu and max_mtu in the nfp_net_infos_get()
---

 drivers/net/nfp/nfp_common.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/nfp/nfp_common.c b/drivers/net/nfp/nfp_common.c
index f8978e803a..4e48e33a63 100644
--- a/drivers/net/nfp/nfp_common.c
+++ b/drivers/net/nfp/nfp_common.c
@@ -693,6 +693,8 @@ nfp_net_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 
 	hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
+	dev_info->max_mtu = (uint16_t)hw->max_mtu;
+	dev_info->min_mtu = RTE_ETHER_MIN_MTU;
 	dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
 	dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
 	dev_info->min_rx_bufsize = RTE_ETHER_MIN_MTU;
@@ -956,6 +958,13 @@ nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 		return -EBUSY;
 	}
 
+	/* the setting mtu is lower than flbufsz */
+	if (mtu > hw->flbufsz) {
+		PMD_DRV_LOG(ERR, "the setting mtu must be lower than current mbufsize of %d",
+			    hw->flbufsz);
+		return -ERANGE;
+	}
+
 	/* writing to configuration space */
 	nn_cfg_writel(hw, NFP_NET_CFG_MTU, mtu);
 
-- 
2.27.0


       reply	other threads:[~2022-03-18 11:38 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20220317143917.499138-1-peng.zhang@corigine.com>
2022-03-18 11:38 ` Peng Zhang [this message]
2022-03-30  3:17   ` [PATCH v3] " Peng Zhang
2022-04-20 18:54     ` Ferruh Yigit
2022-04-21  0:55       ` Nole Zhang
2022-05-11  1:15     ` [PATCH v4] net/nfp: make sure MTU is never larger than mbufsize Peng Zhang
2022-05-19  7:08       ` Andrew Rybchenko
2022-03-18 11:21 [PATCH v2] net/nfp: fix mtu settings Peng Zhang

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=20220318113819.885476-1-peng.zhang@corigine.com \
    --to=peng.zhang@corigine.com \
    --cc=chaoyong.he@corigine.com \
    --cc=dev@dpdk.org \
    --cc=heinrich.kuhn@corigine.com \
    --cc=louis.peens@corigine.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 http://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/ http://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