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Diffstat (limited to 'net/xdp/xskmap.c')
-rw-r--r--net/xdp/xskmap.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/net/xdp/xskmap.c b/net/xdp/xskmap.c
index 113fd9017203..67b4ce504852 100644
--- a/net/xdp/xskmap.c
+++ b/net/xdp/xskmap.c
@@ -87,7 +87,6 @@ static void xsk_map_free(struct bpf_map *map)
{
struct xsk_map *m = container_of(map, struct xsk_map, map);
- bpf_clear_redirect_map(map);
synchronize_net();
bpf_map_area_free(m);
}
@@ -125,6 +124,16 @@ static int xsk_map_gen_lookup(struct bpf_map *map, struct bpf_insn *insn_buf)
return insn - insn_buf;
}
+static void *__xsk_map_lookup_elem(struct bpf_map *map, u32 key)
+{
+ struct xsk_map *m = container_of(map, struct xsk_map, map);
+
+ if (key >= map->max_entries)
+ return NULL;
+
+ return READ_ONCE(m->xsk_map[key]);
+}
+
static void *xsk_map_lookup_elem(struct bpf_map *map, void *key)
{
WARN_ON_ONCE(!rcu_read_lock_held());
@@ -215,6 +224,11 @@ static int xsk_map_delete_elem(struct bpf_map *map, void *key)
return 0;
}
+static int xsk_map_redirect(struct bpf_map *map, u32 ifindex, u64 flags)
+{
+ return __bpf_xdp_redirect_map(map, ifindex, flags, __xsk_map_lookup_elem);
+}
+
void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
struct xdp_sock **map_entry)
{
@@ -247,4 +261,5 @@ const struct bpf_map_ops xsk_map_ops = {
.map_check_btf = map_check_no_btf,
.map_btf_name = "xsk_map",
.map_btf_id = &xsk_map_btf_id,
+ .map_redirect = xsk_map_redirect,
};