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nic_router: reset uplink IP on link state change

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This commit is contained in:
Martin Stein 2018-05-24 19:06:30 +02:00 committed by Christian Helmuth
parent fe21ab48e0
commit 4802d22527
6 changed files with 31 additions and 10 deletions
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10
repos/os/src/server/nic_router/domain.cc
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@ -53,6 +53,9 @@ Domain_base::Domain_base(Xml_node const node)
void Domain::ip_config(Ipv4_config const &new_ip_config)
{
if (!_ip_config_dynamic) {
throw Ip_config_static(); }
/* discard old IP config if any */
if (ip_config().valid) {
@ -86,6 +89,10 @@ void Domain::ip_config(Ipv4_config const &new_ip_config)
interface.attach_to_remote_ip_config();
});
});
} else {
_interfaces.for_each([&] (Interface &interface) {
interface.attach_to_domain_finish();
});
}
}
@ -93,7 +100,8 @@ void Domain::ip_config(Ipv4_config const &new_ip_config)
void Domain::discard_ip_config()
{
/* install invalid IP config */
ip_config(Ipv4_address(), Ipv4_address(), Ipv4_address(), Ipv4_address());
Ipv4_config const new_ip_config;
ip_config(new_ip_config);
}

1
repos/os/src/server/nic_router/domain.h
View File

@ -130,6 +130,7 @@ class Net::Domain : public Domain_base,
public:
struct Invalid : Genode::Exception { };
struct Ip_config_static : Genode::Exception { };
struct No_next_hop : Genode::Exception { };
Domain(Configuration &config,

6
repos/os/src/server/nic_router/interface.cc
View File

@ -256,11 +256,11 @@ void Interface::_detach_from_domain_raw()
void Interface::_attach_to_domain(Domain_name const &domain_name)
{
_attach_to_domain_raw(domain_name);
_attach_to_domain_finish();
attach_to_domain_finish();
}
void Interface::_attach_to_domain_finish()
void Interface::attach_to_domain_finish()
{
/* if domain has yet no IP config, participate in requesting one */
Domain &domain = _domain();
@ -1631,7 +1631,7 @@ void Interface::handle_config_3()
catch (Pointer<Update_domain>::Invalid) {
/* if the interface moved to another domain, finish the operation */
try { _attach_to_domain_finish(); }
try { attach_to_domain_finish(); }
catch (Pointer<Domain>::Invalid) { }
}
}

4
repos/os/src/server/nic_router/interface.h
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@ -271,8 +271,6 @@ class Net::Interface : private Interface_list::Element
void _attach_to_domain_raw(Domain_name const &domain_name);
void _attach_to_domain_finish();
void _apply_foreign_arp();
void _send_icmp_dst_unreachable(Ipv4_address_prefix const &local_intf,
@ -382,6 +380,8 @@ class Net::Interface : private Interface_list::Element
void init();
void attach_to_domain_finish();
/***************
** Accessors **

11
repos/os/src/server/nic_router/uplink.cc
View File

@ -34,10 +34,19 @@ Net::Uplink::Uplink(Env &env,
Nic::Connection(env, this, BUF_SIZE, BUF_SIZE, label.string()),
Net::Interface(env.ep(), timer, mac_address(), alloc, Mac_address(),
config, interfaces, _intf_policy),
_label(label)
_label(label),
_link_state_handler(env.ep(), *this, &Uplink::_handle_link_state)
{
rx_channel()->sigh_ready_to_ack(_sink_ack);
rx_channel()->sigh_packet_avail(_sink_submit);
tx_channel()->sigh_ack_avail(_source_ack);
tx_channel()->sigh_ready_to_submit(_source_submit);
Nic::Connection::link_state_sigh(_link_state_handler);
}
void Net::Uplink::_handle_link_state()
{
try { domain().discard_ip_config(); }
catch (Domain::Ip_config_static) { }
}

3
repos/os/src/server/nic_router/uplink.h
View File

@ -63,9 +63,12 @@ class Net::Uplink : public Uplink_base,
};
Genode::Session_label const &_label;
Genode::Signal_handler<Uplink> _link_state_handler;
Ipv4_address_prefix _read_interface();
void _handle_link_state();
/********************
** Net::Interface **