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55 lines
2.0 KiB
55 lines
2.0 KiB
10 months ago
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From c7160bde79189ba8674acb6355771fb91b6eca28 Mon Sep 17 00:00:00 2001
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Message-ID: <c7160bde79189ba8674acb6355771fb91b6eca28.1709652372.git.aclaudi@redhat.com>
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In-Reply-To: <d60a7ac3c0f6aa2a933f48a69ab31e3637f6906c.1709652372.git.aclaudi@redhat.com>
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References: <d60a7ac3c0f6aa2a933f48a69ab31e3637f6906c.1709652372.git.aclaudi@redhat.com>
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 4 Mar 2024 23:37:51 +0100
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Subject: [PATCH] man: ip-link.8: add a note for gso_ipv4_max_size
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JIRA: https://issues.redhat.com/browse/RHEL-579
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Upstream Status: iproute2-next.git commit 1d7f908103be90e8ac836ef0ce03b72997664b5a
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commit 1d7f908103be90e8ac836ef0ce03b72997664b5a
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Author: Xin Long <lucien.xin@gmail.com>
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Date: Mon Feb 19 14:16:04 2024 -0500
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man: ip-link.8: add a note for gso_ipv4_max_size
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As Paolo noticed, a skb->len check against gso_max_size was added in:
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https://lore.kernel.org/netdev/20231219125331.4127498-1-edumazet@google.com/
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gso_max_size needs to be set to a value greater than or equal to
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gso_ipv4_max_size to make BIG TCP IPv4 work properly.
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To not break the current setup, this patch just adds a note into its
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man doc for this.
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Reported-by: Xiumei Mu <xmu@redhat.com>
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Signed-off-by: Xin Long <lucien.xin@gmail.com>
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Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
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---
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man/man8/ip-link.8.in | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
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index bec1b78b..b90d56c2 100644
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--- a/man/man8/ip-link.8.in
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+++ b/man/man8/ip-link.8.in
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@@ -441,6 +441,11 @@ TCP for IPv6 on this device when the size is greater than 65536.
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specifies the recommended maximum size of a IPv4 Generic Segment Offload
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packet the new device should accept. This is especially used to enable
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BIG TCP for IPv4 on this device by setting to a size greater than 65536.
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+Note that
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+.B gso_max_size
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+needs to be set to a size greater than or equal to
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+.B gso_ipv4_max_size
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+to really enable BIG TCP for IPv4.
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.TP
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.BI gso_max_segs " SEGMENTS "
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--
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2.44.0
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