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From d9bcc70051d23c62cc802a356dc7e4324398765e Mon Sep 17 00:00:00 2001
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Message-Id: <d9bcc70051d23c62cc802a356dc7e4324398765e.1624894546.git.aclaudi@redhat.com>
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 28 Jun 2021 15:22:17 +0200
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Subject: [PATCH] tc: f_flower: Add option to match on related ct state
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1957243
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Upstream Status: unknown commit 7fda6c58
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commit 7fda6c588a295ad381fdf0b9b9971169b2f9d9dc
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Author: Ariel Levkovich <lariel@nvidia.com>
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Date: Fri May 21 20:07:06 2021 +0300
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tc: f_flower: Add option to match on related ct state
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Add support for matching on ct_state flag related.
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The related state indicates a packet is associated with an existing
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connection.
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Example:
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$ tc filter add dev ens1f0_0 ingress prio 1 chain 1 proto ip flower \
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ct_state -est-rel+trk \
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action mirred egress redirect dev ens1f0_1
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$ tc filter add dev ens1f0_0 ingress prio 1 chain 1 proto ip flower \
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ct_state +rel+trk \
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action mirred egress redirect dev ens1f0_1
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Signed-off-by: Ariel Levkovich <lariel@nvidia.com>
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Reviewed-by: Jiri Pirko <jiri@nvidia.com>
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Signed-off-by: David Ahern <dsahern@kernel.org>
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---
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man/man8/tc-flower.8 | 2 ++
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tc/f_flower.c | 3 ++-
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/man/man8/tc-flower.8 b/man/man8/tc-flower.8
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index f7336b62..4541d937 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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@@ -391,6 +391,8 @@ rpl - The packet is in the reply direction, meaning that it is in the opposite d
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.TP
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inv - The state is invalid. The packet couldn't be associated to a connection.
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.TP
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+rel - The packet is related to an existing connection.
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+.TP
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Example: +trk+est
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.RE
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.TP
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diff --git a/tc/f_flower.c b/tc/f_flower.c
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index 53822a95..29db2e23 100644
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--- a/tc/f_flower.c
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+++ b/tc/f_flower.c
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@@ -94,7 +94,7 @@ static void explain(void)
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" LSE := lse depth DEPTH { label LABEL | tc TC | bos BOS | ttl TTL }\n"
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" FILTERID := X:Y:Z\n"
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" MASKED_LLADDR := { LLADDR | LLADDR/MASK | LLADDR/BITS }\n"
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- " MASKED_CT_STATE := combination of {+|-} and flags trk,est,new\n"
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+ " MASKED_CT_STATE := combination of {+|-} and flags trk,est,new,rel\n"
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" ACTION-SPEC := ... look at individual actions\n"
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"\n"
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"NOTE: CLASSID, IP-PROTO are parsed as hexadecimal input.\n"
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@@ -345,6 +345,7 @@ static struct flower_ct_states {
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{ "trk", TCA_FLOWER_KEY_CT_FLAGS_TRACKED },
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{ "new", TCA_FLOWER_KEY_CT_FLAGS_NEW },
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{ "est", TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED },
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+ { "rel", TCA_FLOWER_KEY_CT_FLAGS_RELATED },
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{ "inv", TCA_FLOWER_KEY_CT_FLAGS_INVALID },
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{ "rpl", TCA_FLOWER_KEY_CT_FLAGS_REPLY },
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};
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--
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2.31.1
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