From e7ba7a30f2e02c4666d7d41366e6a2077df1938d Mon Sep 17 00:00:00 2001

From: Phil Sutter <psutter@redhat.com>

Date: Wed, 30 Mar 2016 16:43:19 +0200

Subject: [PATCH] man: Add a man page for the csum action.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1275426

Upstream Status: iproute2.git commit 438dd1d49d71b

commit 438dd1d49d71b5d19f51637c50005f11755558dc

Author: Phil Sutter <phil@nwl.cc>

Date:   Fri Mar 4 13:11:37 2016 +0100

    man: Add a man page for the csum action.

    Cc: Gregoire Baron <baronchon@n7mm.org>

    Signed-off-by: Phil Sutter <phil@nwl.cc>

---

 man/man8/tc-csum.8 | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++

 1 file changed, 54 insertions(+)

 create mode 100644 man/man8/tc-csum.8

diff --git a/man/man8/tc-csum.8 b/man/man8/tc-csum.8

new file mode 100644

index 0000000..9d00aae

--- /dev/null

+++ b/man/man8/tc-csum.8

@@ -0,0 +1,54 @@

+.TH "Checksum action in tc" 8 "11 Jan 2015" "iproute2" "Linux"

+

+.SH NAME

+csum - checksum update action

+.SH SYNOPSIS

+.in +8

+.ti -8

+.BR tc " ... " "action csum"

+.I UPDATE

+

+.ti -8

+.IR UPDATE " := " TARGET " [ " UPDATE " ]"

+

+.ti -8

+.IR TARGET " := { "

+.BR ip4h " |"

+.BR icmp " |"

+.BR igmp " |"

+.BR tcp " |"

+.BR udp " |"

+.BR udplite " |"

+.IR SWEETS " }"

+

+.ti -8

+.IR SWEETS " := { "

+.BR and " | " or " | " + " }"

+.SH DESCRIPTION

+The

+.B csum

+action triggers checksum recalculation of specified packet headers. It is

+commonly used after packet editing using the

+.B pedit

+action to fix for then incorrect checksums.

+.SH OPTIONS

+.TP

+.I TARGET

+Specify which headers to update: IPv4 header

+.RB ( ip4h ),

+ICMP header

+.RB ( icmp ),

+IGMP header

+.RB ( igmp ),

+TCP header

+.RB ( tcp ),

+UDP header

+.RB ( udp ") or"

+UDPLite header

+.RB ( udplite ).

+.TP

+.B SWEETS

+These are merely syntactic sugar and ignored internally.

+.SH SEE ALSO

+.BR tc (8),

+.BR tc-pedit (8)

-- 

1.8.3.1