genode/repos/os/include/net/port.h
Martin Stein eba22b7551 nic_router: rework updating of TCP/UDP links
* Update links from forward rules only with forward rules and links from
  transport-routing rules only with transport-routing rules. Besides raising
  the performance of the code, this also fixes a former bug that allowed
  forward-rule links to falsely stay active because of a transport-routing
  rule that matched the client destination ip and port.

* Don't use good-case exceptions for updating TCP/UDP links on re-configuration
  of the router.

* Make conditions when to dismiss a forward rule easier to read.
  * Introduces != operator to the public Port class in the net library.

* Fix unnecessary log message that a link was dismissed when only a potentially
  matching forward rule turned out to be not matching.

* Apply Genode coding style to if statements with a single body statement.

Fix #4728
2023-01-24 12:07:31 +01:00

61 lines
1.3 KiB
C++

/*
* \brief Network port
* \author Martin Stein
* \date 2016-08-19
*/
/*
* Copyright (C) 2016-2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _NET__PORT_H_
#define _NET__PORT_H_
/* Genode includes */
#include <base/stdint.h>
#include <base/output.h>
#include <util/string.h>
namespace Net {
class Port;
static inline Genode::size_t ascii_to(const char *, Net::Port &);
}
/**
* This class makes it clear what the port integer-value means at an interface
*/
struct Net::Port
{
Genode::uint16_t value;
explicit Port(Genode::uint16_t const value) : value(value) { }
bool operator == (Port const &other) const { return value == other.value; }
bool operator != (Port const &other) const { return value != other.value; }
void print(Genode::Output &out) const { Genode::print(out, value); }
}
__attribute__((packed));
/**
* Read port value from string
*
* \return number of consumed characters
*/
Genode::size_t Net::ascii_to(const char *s, Net::Port &result)
{
using namespace Genode;
uint16_t value = 0;
size_t const consumed = ascii_to_unsigned(s, value, 0);
result = Net::Port(value);
return consumed;
}
#endif /* _NET__PORT_H_ */