53 lines
1.8 KiB
Diff
53 lines
1.8 KiB
Diff
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From 7eb8f16deca37f85b2988204368051a4556b6228 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <phil@nwl.cc>
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Date: Thu, 1 Dec 2022 15:08:01 +0100
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Subject: [PATCH] nft: Fix match generator for '! -i +'
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It's actually nonsense since it will never match, but iptables accepts
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it and the resulting nftables rule must behave identically. Reuse the
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solution implemented into xtables-translate (by commit e179e87a1179e)
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and turn the above match into 'iifname INVAL/D'.
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The commit this fixes merely ignored the fact that "any interface" match
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might be inverted.
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Fixes: 0a8635183edd0 ("xtables-compat: ignore '+' interface name")
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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(cherry picked from commit 5baa4279264bb4ab93c6e80b4887f2bd29691446)
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Conflicts:
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iptables/nft-shared.c
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-> Adjusted to missing commit 7e38890c6b4fb
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("nft: prepare for dynamic register allocation").
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---
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iptables/nft-shared.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/iptables/nft-shared.c b/iptables/nft-shared.c
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index 14b04b24085a0..8e005ed3b5818 100644
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--- a/iptables/nft-shared.c
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+++ b/iptables/nft-shared.c
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@@ -143,6 +143,9 @@ void add_iniface(struct nftnl_rule *r, char *iface, uint32_t op)
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if (iface[iface_len - 1] == '+') {
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if (iface_len > 1)
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add_cmp_ptr(r, op, iface, iface_len - 1);
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+ else if (op != NFT_CMP_EQ)
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+ add_cmp_ptr(r, NFT_CMP_EQ, "INVAL/D",
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+ strlen("INVAL/D") + 1);
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} else
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add_cmp_ptr(r, op, iface, iface_len + 1);
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}
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@@ -157,6 +160,9 @@ void add_outiface(struct nftnl_rule *r, char *iface, uint32_t op)
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if (iface[iface_len - 1] == '+') {
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if (iface_len > 1)
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add_cmp_ptr(r, op, iface, iface_len - 1);
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+ else if (op != NFT_CMP_EQ)
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+ add_cmp_ptr(r, NFT_CMP_EQ, "INVAL/D",
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+ strlen("INVAL/D") + 1);
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} else
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add_cmp_ptr(r, op, iface, iface_len + 1);
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}
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--
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2.40.0
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