.arg2_type = ARG_ANYTHING,
};
+BPF_CALL_4(bpf_sk_redirect_hash, struct sk_buff *, skb,
+ struct bpf_map *, map, void *, key, u64, flags)
+{
+ struct tcp_skb_cb *tcb = TCP_SKB_CB(skb);
+
+ /* If user passes invalid input drop the packet. */
+ if (unlikely(flags & ~(BPF_F_INGRESS)))
+ return SK_DROP;
+
+ tcb->bpf.flags = flags;
+ tcb->bpf.sk_redir = __sock_hash_lookup_elem(map, key);
+ if (!tcb->bpf.sk_redir)
+ return SK_DROP;
+
+ return SK_PASS;
+}
+
+static const struct bpf_func_proto bpf_sk_redirect_hash_proto = {
+ .func = bpf_sk_redirect_hash,
+ .gpl_only = false,
+ .ret_type = RET_INTEGER,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_CONST_MAP_PTR,
+ .arg3_type = ARG_PTR_TO_MAP_KEY,
+ .arg4_type = ARG_ANYTHING,
+};
+
BPF_CALL_4(bpf_sk_redirect_map, struct sk_buff *, skb,
struct bpf_map *, map, u32, key, u64, flags)
{
.arg4_type = ARG_ANYTHING,
};
+BPF_CALL_4(bpf_msg_redirect_hash, struct sk_msg_buff *, msg,
+ struct bpf_map *, map, void *, key, u64, flags)
+{
+ /* If user passes invalid input drop the packet. */
+ if (unlikely(flags & ~(BPF_F_INGRESS)))
+ return SK_DROP;
+
+ msg->flags = flags;
+ msg->sk_redir = __sock_hash_lookup_elem(map, key);
+ if (!msg->sk_redir)
+ return SK_DROP;
+
+ return SK_PASS;
+}
+
+static const struct bpf_func_proto bpf_msg_redirect_hash_proto = {
+ .func = bpf_msg_redirect_hash,
+ .gpl_only = false,
+ .ret_type = RET_INTEGER,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_CONST_MAP_PTR,
+ .arg3_type = ARG_PTR_TO_MAP_KEY,
+ .arg4_type = ARG_ANYTHING,
+};
+
BPF_CALL_4(bpf_msg_redirect_map, struct sk_msg_buff *, msg,
struct bpf_map *, map, u32, key, u64, flags)
{
return &bpf_sock_ops_cb_flags_set_proto;
case BPF_FUNC_sock_map_update:
return &bpf_sock_map_update_proto;
+ case BPF_FUNC_sock_hash_update:
+ return &bpf_sock_hash_update_proto;
default:
return bpf_base_func_proto(func_id);
}
switch (func_id) {
case BPF_FUNC_msg_redirect_map:
return &bpf_msg_redirect_map_proto;
+ case BPF_FUNC_msg_redirect_hash:
+ return &bpf_msg_redirect_hash_proto;
case BPF_FUNC_msg_apply_bytes:
return &bpf_msg_apply_bytes_proto;
case BPF_FUNC_msg_cork_bytes:
return &bpf_get_socket_uid_proto;
case BPF_FUNC_sk_redirect_map:
return &bpf_sk_redirect_map_proto;
+ case BPF_FUNC_sk_redirect_hash:
+ return &bpf_sk_redirect_hash_proto;
default:
return bpf_base_func_proto(func_id);
}