Thread (8 messages) read the whole thread 8 messages, 2 authors, 2024-05-30
STALE794d

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[PATCH net 6/6] netfilter: nft_fib: allow from forward/input without iif selector

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2024-05-28 22:55:31
Also in: netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds 

From: Eric Garver <redacted>

This removes the restriction of needing iif selector in the
forward/input hooks for fib lookups when requested result is
oif/oifname.

Removing this restriction allows "loose" lookups from the forward hooks.

Fixes: be8be04e5ddb ("netfilter: nft_fib: reverse path filter for policy-based routing on iif")
Signed-off-by: Eric Garver <redacted>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nft_fib.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/net/netfilter/nft_fib.c b/net/netfilter/nft_fib.c
index 37cfe6dd712d..b58f62195ff3 100644
--- a/net/netfilter/nft_fib.c
+++ b/net/netfilter/nft_fib.c
@@ -35,11 +35,9 @@ int nft_fib_validate(const struct nft_ctx *ctx, const struct nft_expr *expr,
 	switch (priv->result) {
 	case NFT_FIB_RESULT_OIF:
 	case NFT_FIB_RESULT_OIFNAME:
-		hooks = (1 << NF_INET_PRE_ROUTING);
-		if (priv->flags & NFTA_FIB_F_IIF) {
-			hooks |= (1 << NF_INET_LOCAL_IN) |
-				 (1 << NF_INET_FORWARD);
-		}
+		hooks = (1 << NF_INET_PRE_ROUTING) |
+			(1 << NF_INET_LOCAL_IN) |
+			(1 << NF_INET_FORWARD);
 		break;
 	case NFT_FIB_RESULT_ADDRTYPE:
 		if (priv->flags & NFTA_FIB_F_IIF)
-- 
2.30.2
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