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netfilter: nfnetlink: add missing __be16 cast

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Sparse flags this as suspicious, because this compares
integer with a be16 with no conversion.

Its a compat check for old userspace that sends host byte order,
so force a be16 cast here.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2022-06-23 15:05:09 +02:00 committed by Pablo Neira Ayuso
parent f72547473f
commit ec6f2ff0a3
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nfnetlink.c
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@ -626,7 +626,7 @@ static void nfnetlink_rcv_skb_batch(struct sk_buff *skb, struct nlmsghdr *nlh)
nfgenmsg = nlmsg_data(nlh);
skb_pull(skb, msglen);
/* Work around old nft using host byte order */
if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
if (nfgenmsg->res_id == (__force __be16)NFNL_SUBSYS_NFTABLES)
res_id = NFNL_SUBSYS_NFTABLES;
else
res_id = ntohs(nfgenmsg->res_id);