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From 69685a7aa7fb408cce256e469430e10e99a43e2d Mon Sep 17 00:00:00 2001
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 25 Mar 2019 16:54:31 +0100
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Subject: [PATCH] tc: f_flower: Add support for matching first frag packets
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1559814
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Upstream Status: iproute2.git commit fb4e6abfca2c4
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commit fb4e6abfca2c48380210d48c1e7f3685f8bb58fd
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Author: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
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Date: Fri Mar 9 11:07:22 2018 +0100
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tc: f_flower: Add support for matching first frag packets
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Add matching support for distinguishing between first and later fragmented
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packets.
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# tc filter add dev eth0 protocol ip parent ffff: \
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flower indev eth0 \
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ip_flags firstfrag \
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ip_proto udp \
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action mirred egress redirect dev eth1
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# tc filter add dev eth0 protocol ip parent ffff: \
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flower indev eth0 \
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ip_flags nofirstfrag \
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ip_proto udp \
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action mirred egress redirect dev eth1
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Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
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Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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Signed-off-by: Simon Horman <simon.horman@netronome.com>
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Signed-off-by: David Ahern <dsahern@gmail.com>
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---
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man/man8/tc-flower.8 | 8 ++++++--
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tc/f_flower.c | 1 +
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2 files changed, 7 insertions(+), 2 deletions(-)
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diff --git a/man/man8/tc-flower.8 b/man/man8/tc-flower.8
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index 387f73f5cd2e9..661f42200bdfb 100644
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--- a/man/man8/tc-flower.8
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+++ b/man/man8/tc-flower.8
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@@ -255,8 +255,12 @@ is an 8 bit time-to-live value.
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.BI ip_flags " IP_FLAGS"
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.I IP_FLAGS
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may be either
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-.BR frag " or " nofrag
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-to match on fragmented packets or not respectively.
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+.BR frag ", " nofrag ", " firstfrag " or " nofirstfrag
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+where frag and nofrag could be used to match on fragmented packets or not,
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+respectively. firstfrag and nofirstfrag can be used to further distinguish
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+fragmented packet. firstfrag can be used to indicate the first fragmented
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+packet. nofirstfrag can be used to indicates subsequent fragmented packets
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+or non-fragmented packets.
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.SH NOTES
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As stated above where applicable, matches of a certain layer implicitly depend
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on the matches of the next lower layer. Precisely, layer one and two matches
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diff --git a/tc/f_flower.c b/tc/f_flower.c
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index 40dcfbd687a20..e2c7daa0b8e03 100644
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--- a/tc/f_flower.c
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+++ b/tc/f_flower.c
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@@ -162,6 +162,7 @@ struct flag_to_string {
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static struct flag_to_string flags_str[] = {
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{ TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOWER_IP_FLAGS, "frag" },
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+ { TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, FLOWER_IP_FLAGS, "firstfrag" },
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};
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static int flower_parse_matching_flags(char *str,
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--
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2.20.1
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