6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tyrone Wu <wudevelops@xxxxxxxxx>
[ Upstream commit 92f3715e1eba1d41e55be06159dc3d856b18326d ]
This fix correctly populates the `bpf_link_info.netfilter.flags` field
when user passes the `BPF_F_NETFILTER_IP_DEFRAG` flag.
Fixes: 91721c2d02d3 ("netfilter: bpf: Support BPF_F_NETFILTER_IP_DEFRAG in netfilter link")
Signed-off-by: Tyrone Wu <wudevelops@xxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Acked-by: Florian Westphal <fw@xxxxxxxxx>
Cc: Daniel Xu <dxu@xxxxxxxxx>
Link: https://lore.kernel.org/bpf/20241011193252.178997-1-wudevelops@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/netfilter/nf_bpf_link.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nf_bpf_link.c b/net/netfilter/nf_bpf_link.c
index 0e4beae421f83..96015a59db09e 100644
--- a/net/netfilter/nf_bpf_link.c
+++ b/net/netfilter/nf_bpf_link.c
@@ -150,11 +150,12 @@ static int bpf_nf_link_fill_link_info(const struct bpf_link *link,
struct bpf_link_info *info)
{
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.hooknum = nf_link->hook_ops.hooknum;
info->netfilter.priority = nf_link->hook_ops.priority;
- info->netfilter.flags = 0;
+ info->netfilter.flags = hook ? BPF_F_NETFILTER_IP_DEFRAG : 0;
return 0;
}
--
2.43.0
