trace_recorder: add pcapng policy

genodelabs/genode#4352

repos/gems/src/lib/trace_recorder/policy/pcapng/policy.cc

@@ -0,0 +1,60 @@
+#include <trace/policy.h>
+#include <trace_recorder_policy/pcapng.h>
+
+using namespace Genode;
+
+enum { MAX_CAPTURE_LEN = 100 };
+
+
+size_t max_event_size() {
+	return Trace_recorder::Pcapng_event::max_size(MAX_CAPTURE_LEN); }
+
+
+size_t trace_eth_packet(char *dst, char const *if_name, bool out, char *pkt_data, size_t pkt_len)
+{
+	using namespace Pcapng;
+	Trace_recorder::Pcapng_event *e =
+		new (dst) Trace_recorder::Pcapng_event(Link_type::ETHERNET, if_name, out, pkt_len, pkt_data, MAX_CAPTURE_LEN);
+
+	return e->total_length();
+}
+
+size_t checkpoint(char *dst, char const *, unsigned long, void *, unsigned char)
+{
+	return 0;
+}
+
+size_t log_output(char *dst, char const *log_message, size_t len)
+{
+	return 0;
+}
+
+size_t rpc_call(char *dst, char const *rpc_name, Msgbuf_base const &)
+{
+	return 0;
+}
+
+size_t rpc_returned(char *dst, char const *rpc_name, Msgbuf_base const &)
+{
+	return 0;
+}
+
+size_t rpc_dispatch(char *dst, char const *rpc_name)
+{
+	return 0;
+}
+
+size_t rpc_reply(char *dst, char const *rpc_name)
+{
+	return 0;
+}
+
+size_t signal_submit(char *dst, unsigned const)
+{
+	return 0;
+}
+
+size_t signal_receive(char *dst, Signal_context const &, unsigned)
+{
+	return 0;
+}

repos/gems/src/lib/trace_recorder/policy/pcapng/target.mk

@@ -0,0 +1,5 @@
+TARGET = pcapng_policy
+
+TARGET_POLICY = pcapng
+
+include $(PRG_DIR)/../policy.inc