d0f5838c61
Apply the style rule that an accessor is named similar to the the underlying value. Provide read and write accessors for each mandatory header attribute. Fix some incorrect structure in the headers like with the flags field in Ipv4_packet. Ref #2490
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
/*
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* \brief Rule for doing NAT from one given interface to another
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* \author Martin Stein
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* \date 2016-09-13
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <util/xml_node.h>
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#include <base/log.h>
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#include <net/tcp.h>
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#include <net/udp.h>
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/* local includes */
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#include <nat_rule.h>
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#include <domain.h>
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#include <interface.h>
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using namespace Net;
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using namespace Genode;
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bool Nat_rule::higher(Nat_rule *rule)
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{
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return (addr_t)&rule->domain() > (addr_t)&_domain;
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}
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Nat_rule::Nat_rule(Domain_tree &domains,
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Port_allocator &tcp_port_alloc,
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Port_allocator &udp_port_alloc,
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Xml_node const node)
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:
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Leaf_rule(domains, node),
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_tcp_port_alloc(tcp_port_alloc, node.attribute_value("tcp-ports", 0UL)),
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_udp_port_alloc(udp_port_alloc, node.attribute_value("udp-ports", 0UL))
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{ }
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Nat_rule &Nat_rule::find_by_domain(Domain &domain)
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{
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if (&domain == &_domain) {
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return *this; }
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bool const side = (addr_t)&domain > (addr_t)&_domain;
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Nat_rule *const rule = Avl_node<Nat_rule>::child(side);
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if (!rule) {
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throw Nat_rule_tree::No_match(); }
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return rule->find_by_domain(domain);
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}
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Nat_rule &Nat_rule_tree::find_by_domain(Domain &domain)
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{
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Nat_rule *const rule = first();
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if (!rule) {
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throw No_match(); }
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return rule->find_by_domain(domain);
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}
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void Nat_rule::print(Output &output) const
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{
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Genode::print(output, "domain ", _domain,
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" tcp-ports ", _tcp_port_alloc.max(),
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" udp-ports ", _udp_port_alloc.max());
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}
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Port_allocator_guard &Nat_rule::port_alloc(L3_protocol const prot)
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{
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switch (prot) {
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case L3_protocol::TCP: return _tcp_port_alloc;
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case L3_protocol::UDP: return _udp_port_alloc;
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default: throw Interface::Bad_transport_protocol(); }
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}
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