bpf: host: add drop notify for missed POLICY_EGRESSCALL_MAP tail-call

We're returning a DROP reason, but nothing outside do_netdev() creates the corresponding drop notification from it. Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
cilium · May 12, 2023 · f601b4c · f601b4c
1 parent 37d5264
commit f601b4c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/bpf/bpf_host.c b/bpf/bpf_host.c
@@ -994,7 +994,8 @@ do_netdev(struct __ctx_buff *ctx, __u16 proto, const bool from_host)
 
 			ctx->mark = 0;
 			tail_call_dynamic(ctx, &POLICY_EGRESSCALL_MAP, lxc_id);
-			return DROP_MISSED_TAIL_CALL;
+			return send_drop_notify_error(ctx, identity, DROP_MISSED_TAIL_CALL,
+						      CTX_ACT_DROP, METRIC_EGRESS);
 		}
 	}
 #endif