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netfilter: nft_tproxy: Fix port selector on Big Endian

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[ Upstream commit 8cb4ec44de42b99b92399b4d1daf3dc430ed0186 ]

On Big Endian architectures, u16 port value was extracted from the wrong
parts of u32 sreg_port, just like commit 10596608c4 ("netfilter:
nf_tables: fix mismatch in big-endian system") describes.

Fixes: 4ed8eb6570 ("netfilter: nf_tables: Add native tproxy support")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Phil Sutter 2019-12-18 00:59:29 +01:00 • committed by Greg Kroah-Hartman
parent 85b1e127aa
commit da7504b07c
1 changed files with 2 additions and 2 deletions

4
net/netfilter/nft_tproxy.c
View file

@ -50,7 +50,7 @@ static void nft_tproxy_eval_v4(const struct nft_expr *expr,
taddr = nf_tproxy_laddr4(skb, taddr, iph->daddr);
if (priv->sreg_port)
tport = regs->data[priv->sreg_port];
tport = nft_reg_load16(&regs->data[priv->sreg_port]);
if (!tport)
tport = hp->dest;
@ -117,7 +117,7 @@ static void nft_tproxy_eval_v6(const struct nft_expr *expr,
taddr = *nf_tproxy_laddr6(skb, &taddr, &iph->daddr);
if (priv->sreg_port)
tport = regs->data[priv->sreg_port];
tport = nft_reg_load16(&regs->data[priv->sreg_port]);
if (!tport)
tport = hp->dest;