From f5f56e1a1c4d9e9496fcb9d81131066a964ccd23 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 13 Apr 2024 14:15:43 +0200 Subject: Adding upstream version 2.4.1. Signed-off-by: Daniel Baumann --- src/lib/dhcpsrv/subnet_id.h | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/lib/dhcpsrv/subnet_id.h (limited to 'src/lib/dhcpsrv/subnet_id.h') diff --git a/src/lib/dhcpsrv/subnet_id.h b/src/lib/dhcpsrv/subnet_id.h new file mode 100644 index 0000000..aff581b --- /dev/null +++ b/src/lib/dhcpsrv/subnet_id.h @@ -0,0 +1,48 @@ +// Copyright (C) 2014-2022 Internet Systems Consortium, Inc. ("ISC") +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this +// file, You can obtain one at http://mozilla.org/MPL/2.0/. + +#ifndef SUBNET_ID_H +#define SUBNET_ID_H + +#include +#include +#include +#include +#include + +namespace isc { +namespace dhcp { + +/// @brief Defines unique IPv4 or IPv6 subnet identifier. +/// +/// Each subnet for which the DHCP service has been configured is identified +/// by the unique value called subnet id. Right now it is represented as +/// a simple unsigned integer. In the future it may be extended to more complex +/// type. +typedef uint32_t SubnetID; + +/// @brief Special value is used for storing/recognizing global host reservations. +static const SubnetID SUBNET_ID_GLOBAL = 0; +/// @brief The largest valid value for auto-generated subnet IDs. +static const SubnetID SUBNET_ID_MAX = std::numeric_limits::max()-1; +/// @brief Special value used to signify that a SubnetID is "not set" +static const SubnetID SUBNET_ID_UNUSED = std::numeric_limits::max(); + +/// @brief Exception thrown upon attempt to add subnet with an ID that belongs +/// to the subnet that already exists. +class DuplicateSubnetID : public Exception { +public: + DuplicateSubnetID(const char* file, size_t line, const char* what) : + isc::Exception(file, line, what) { }; +}; + +/// @brief Ordered list aka set of subnetIDs. +typedef std::set SubnetIDSet; + +} +} + +#endif // SUBNET_ID_H -- cgit v1.2.3