From: "Sverdlin, Alexander (Nokia - DE/Ulm)" <alexander.sverdlin@nokia.com>
To: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc: "Sverdlin,
Alexander (Nokia - DE/Ulm)" <alexander.sverdlin@nokia.com>,
"David S . Miller " <davem@davemloft.net>,
Jarod Wilson <jarod@redhat.com>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: [PATCH v2] net: ethernet: octeon_mgmt: Account for second possible VLAN header
Date: Fri, 8 Nov 2019 10:00:44 +0000 [thread overview]
Message-ID: <20191108100024.126857-1-alexander.sverdlin@nokia.com> (raw)
In-Reply-To: <20191107.151409.1123596566825003561.davem@davemloft.net>
From: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Octeon's input ring-buffer entry has 14 bits-wide size field, so to account
for second possible VLAN header max_mtu must be further reduced.
Fixes: 109cc16526c6d ("ethernet/cavium: use core min/max MTU checking")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
---
Changelog:
v2: Added "Fixes:" tag, Cc'ed stable
drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
index 0e5de88..cdd7e5d 100644
--- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
+++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
@@ -1499,7 +1499,7 @@ static int octeon_mgmt_probe(struct platform_device *pdev)
netdev->ethtool_ops = &octeon_mgmt_ethtool_ops;
netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM;
- netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM;
+ netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM - VLAN_HLEN;
mac = of_get_mac_address(pdev->dev.of_node);
--
2.4.6
next parent reply other threads:[~2019-11-08 10:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191107.151409.1123596566825003561.davem@davemloft.net>
2019-11-08 10:00 ` Sverdlin, Alexander (Nokia - DE/Ulm) [this message]
2019-11-08 19:09 ` [PATCH v2] net: ethernet: octeon_mgmt: Account for second possible VLAN header David Miller
2019-11-08 19:19 ` David Miller
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=20191108100024.126857-1-alexander.sverdlin@nokia.com \
--to=alexander.sverdlin@nokia.com \
--cc=davem@davemloft.net \
--cc=jarod@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=stable@vger.kernel.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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).