net/ncsi: Don't probe on the reserved channel ID (0x1f)

[cascardo/linux.git] / net / core / filter.c

diff --git a/net/core/filter.c b/net/core/filter.c
index e5d9977..00351cd 100644 (file)
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1777,6 +1777,22 @@ static const struct bpf_func_proto bpf_get_hash_recalc_proto = {
        .arg1_type      = ARG_PTR_TO_CTX,
 };
 
+BPF_CALL_1(bpf_set_hash_invalid, struct sk_buff *, skb)
+{
+       /* After all direct packet write, this can be used once for
+        * triggering a lazy recalc on next skb_get_hash() invocation.
+        */
+       skb_clear_hash(skb);
+       return 0;
+}
+
+static const struct bpf_func_proto bpf_set_hash_invalid_proto = {
+       .func           = bpf_set_hash_invalid,
+       .gpl_only       = false,
+       .ret_type       = RET_INTEGER,
+       .arg1_type      = ARG_PTR_TO_CTX,
+};
+
 BPF_CALL_3(bpf_skb_vlan_push, struct sk_buff *, skb, __be16, vlan_proto,
           u16, vlan_tci)
 {
@@ -2534,6 +2550,8 @@ tc_cls_act_func_proto(enum bpf_func_id func_id)
                return &bpf_get_route_realm_proto;
        case BPF_FUNC_get_hash_recalc:
                return &bpf_get_hash_recalc_proto;
+       case BPF_FUNC_set_hash_invalid:
+               return &bpf_set_hash_invalid_proto;
        case BPF_FUNC_perf_event_output:
                return &bpf_skb_event_output_proto;
        case BPF_FUNC_get_smp_processor_id:
@@ -2551,6 +2569,8 @@ xdp_func_proto(enum bpf_func_id func_id)
        switch (func_id) {
        case BPF_FUNC_perf_event_output:
                return &bpf_xdp_event_output_proto;
+       case BPF_FUNC_get_smp_processor_id:
+               return &bpf_get_smp_processor_id_proto;
        default:
                return sk_filter_func_proto(func_id);
        }