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bpf: Fix link info netfilter flags to populate defrag flag

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This fix correctly populates the `bpf_link_info.netfilter.flags` field
when user passes the `BPF_F_NETFILTER_IP_DEFRAG` flag.

Fixes: 91721c2d02 ("netfilter: bpf: Support BPF_F_NETFILTER_IP_DEFRAG in netfilter link")
Signed-off-by: Tyrone Wu <wudevelops@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Florian Westphal <fw@strlen.de>
Cc: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/bpf/20241011193252.178997-1-wudevelops@gmail.com
This commit is contained in:
Tyrone Wu 2024-10-11 19:32:51 +00:00 committed by Daniel Borkmann
parent ee230090f6
commit 92f3715e1e
1 changed files with 2 additions and 1 deletions
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3
net/netfilter/nf_bpf_link.c
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@ -150,11 +150,12 @@ static int bpf_nf_link_fill_link_info(const struct bpf_link *link,
struct bpf_link_info *info) struct bpf_link_info *info)
{ {
struct bpf_nf_link *nf_link = container_of(link, struct bpf_nf_link, link); struct bpf_nf_link *nf_link = container_of(link, struct bpf_nf_link, link);
const struct nf_defrag_hook *hook = nf_link->defrag_hook;
info->netfilter.pf = nf_link->hook_ops.pf; info->netfilter.pf = nf_link->hook_ops.pf;
info->netfilter.hooknum = nf_link->hook_ops.hooknum; info->netfilter.hooknum = nf_link->hook_ops.hooknum;
info->netfilter.priority = nf_link->hook_ops.priority; info->netfilter.priority = nf_link->hook_ops.priority;
info->netfilter.flags = 0; info->netfilter.flags = hook ? BPF_F_NETFILTER_IP_DEFRAG : 0;
return 0; return 0;
} }