mirror of
https://github.com/genodelabs/genode.git
synced 2025-01-18 18:56:29 +00:00
Johannes Schlatow
Christian Helmuth
parent
cee0c9858c
commit
810bbc0484
@ -743,7 +743,7 @@ Whether to log router decisions and optional hints.
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! <config verbose_packets="no" ... >
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! <domain verbose_packets="no" ... />
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! <config/>
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! </config>
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Whether to log most important protocol header fields of each packet that is
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received or sent (ETH, IPv4, ARP, UDP, TCP, DHCP, ICMP). The <config> value
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@ -751,7 +751,7 @@ affects all domains without a <domain> local value.
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! <config verbose_packet_drop="no" ... >
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! <domain verbose_packet_drop="no" ... />
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! <config/>
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! </config>
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Whether to log each packet drop and the rational behind it. The <config> value
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affects all domains without a <domain> local value.
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@ -762,6 +762,28 @@ Whether to log most important changes in the state of a domain (number of
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interfaces assigned, current IPv4 config).
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Tracing
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~~~~~~~
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You can use Genode's TRACE service to capture all packets that traverse the
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router. This requires a monitor component such as the trace-recorder component
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that provides and activates a corresponding trace buffer and trace policy.
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More precisely, packet tracing is realised via the 'trace_eth_packet()' hook
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that needs to be implemented by the trace policy. Note that packet tracing must
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also be enabled in the router configuration.
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This is how you can configure whether to trace packets (default values shown):
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! <config trace_packets="no">
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! <domain trace_packets="no" ... />
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! </config>
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If enabled, 'trace_eth_packet()' is called for every packet received or sent by
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the router. The attribute in the <domain> tag applies only for packets
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received and sent by that domain. The attribute in the <config> tag sets the
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default value for all <domain> tags without a local setting.
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Other configuration attributes
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -171,6 +171,7 @@
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<xs:attribute name="gateway" type="Ipv4_address" />
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<xs:attribute name="verbose_packets" type="Boolean" />
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<xs:attribute name="verbose_packet_drop" type="Boolean" />
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<xs:attribute name="trace_packets" type="Boolean" />
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<xs:attribute name="label" type="Session_label" />
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<xs:attribute name="icmp_echo_server" type="Boolean" />
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<xs:attribute name="use_arp" type="Boolean" />
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@ -182,6 +183,7 @@
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<xs:attribute name="verbose" type="Boolean" />
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<xs:attribute name="verbose_packets" type="Boolean" />
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<xs:attribute name="verbose_packet_drop" type="Boolean" />
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<xs:attribute name="trace_packets" type="Boolean" />
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<xs:attribute name="verbose_domain_state" type="Boolean" />
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<xs:attribute name="dhcp_discover_timeout_sec" type="Seconds" />
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<xs:attribute name="dhcp_request_timeout_sec" type="Seconds" />
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@ -36,6 +36,7 @@ Configuration::Configuration(Xml_node const node,
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_verbose_packets { false },
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_verbose_packet_drop { false },
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_verbose_domain_state { false },
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_trace_packets { false },
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_icmp_echo_server { false },
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_icmp_type_3_code_on_fragm_ipv4 { 0 },
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_dhcp_discover_timeout { 0 },
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@ -116,6 +117,7 @@ Configuration::Configuration(Env &env,
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_verbose_packets { node.attribute_value("verbose_packets", false) },
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_verbose_packet_drop { node.attribute_value("verbose_packet_drop", false) },
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_verbose_domain_state { node.attribute_value("verbose_domain_state", false) },
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_trace_packets { node.attribute_value("trace_packets", false) },
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_icmp_echo_server { node.attribute_value("icmp_echo_server", true) },
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_icmp_type_3_code_on_fragm_ipv4 { _init_icmp_type_3_code_on_fragm_ipv4(node) },
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_dhcp_discover_timeout { read_sec_attr(node, "dhcp_discover_timeout_sec", 10) },
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@ -39,6 +39,7 @@ class Net::Configuration
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bool const _verbose_packets;
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bool const _verbose_packet_drop;
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bool const _verbose_domain_state;
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bool const _trace_packets;
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bool const _icmp_echo_server;
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Icmp_packet::Code const _icmp_type_3_code_on_fragm_ipv4;
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Genode::Microseconds const _dhcp_discover_timeout;
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@ -92,6 +93,7 @@ class Net::Configuration
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bool verbose_packets() const { return _verbose_packets; }
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bool verbose_packet_drop() const { return _verbose_packet_drop; }
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bool verbose_domain_state() const { return _verbose_domain_state; }
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bool trace_packets() const { return _trace_packets; }
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bool icmp_echo_server() const { return _icmp_echo_server; }
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Icmp_packet::Code icmp_type_3_code_on_fragm_ipv4() const { return _icmp_type_3_code_on_fragm_ipv4; }
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Genode::Microseconds dhcp_discover_timeout() const { return _dhcp_discover_timeout; }
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@ -196,6 +196,8 @@ Domain::Domain(Configuration &config, Xml_node const node, Allocator &alloc)
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config.verbose_packets()) },
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_verbose_packet_drop { node.attribute_value("verbose_packet_drop",
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config.verbose_packet_drop()) },
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_trace_packets { node.attribute_value("trace_packets",
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config.trace_packets()) },
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_icmp_echo_server { node.attribute_value("icmp_echo_server",
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config.icmp_echo_server()) },
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_use_arp { _node.attribute_value("use_arp", true) },
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@ -142,6 +142,7 @@ class Net::Domain : public Domain_base,
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Genode::size_t _rx_bytes { 0 };
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bool const _verbose_packets;
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bool const _verbose_packet_drop;
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bool const _trace_packets;
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bool const _icmp_echo_server;
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bool const _use_arp;
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Genode::Session_label const _label;
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@ -236,6 +237,7 @@ class Net::Domain : public Domain_base,
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bool verbose_packets() const { return _verbose_packets; }
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bool verbose_packet_drop() const { return _verbose_packet_drop; }
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bool trace_packets() const { return _trace_packets; }
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bool icmp_echo_server() const { return _icmp_echo_server; }
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bool use_arp() const { return _use_arp; }
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Genode::Session_label const &label() const { return _label; }
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@ -1756,6 +1756,12 @@ void Interface::_handle_eth(void *const eth_base,
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if (local_domain.verbose_packets()) {
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log("[", local_domain, "] rcv ", eth); }
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if (local_domain.trace_packets())
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Genode::Trace::Ethernet_packet(local_domain.name().string(),
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Genode::Trace::Ethernet_packet::Direction::RECV,
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eth_base,
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size_guard.total_size());
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/* try to handle ethernet frame */
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try { _handle_eth(eth, size_guard, pkt, local_domain); }
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catch (Free_resources_and_retry_handle_eth) {
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@ -1871,6 +1877,13 @@ void Interface::_send_submit_pkt(Packet_descriptor &pkt,
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}
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catch (Size_guard::Exceeded) { log("[", local_domain, "] snd ?"); }
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}
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if (local_domain.trace_packets())
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Genode::Trace::Ethernet_packet(local_domain.name().string(),
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Genode::Trace::Ethernet_packet::Direction::SENT,
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pkt_base,
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pkt_size);
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_source.try_submit_packet(pkt);
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}
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