nuttx/net/route/net_del_ramroute.c
Alin Jerpelea 67d02a45eb net: migrate to SPDX identifier
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2024-09-12 01:08:11 +08:00

244 lines
7.5 KiB
C

/****************************************************************************
* net/route/net_del_ramroute.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <arpa/inet.h>
#include <nuttx/net/ip.h>
#include "netlink/netlink.h"
#include "route/ramroute.h"
#include "route/route.h"
#if defined(CONFIG_ROUTE_IPv4_RAMROUTE) || defined(CONFIG_ROUTE_IPv6_RAMROUTE)
/****************************************************************************
* Private Types
****************************************************************************/
#ifdef CONFIG_ROUTE_IPv4_RAMROUTE
struct route_match_ipv4_s
{
FAR struct net_route_ipv4_s *prev; /* Predecessor in the list */
in_addr_t target; /* The target IP address to match */
in_addr_t netmask; /* The network mask to match */
};
#endif
#ifdef CONFIG_ROUTE_IPv6_RAMROUTE
struct route_match_ipv6_s
{
FAR struct net_route_ipv6_s *prev; /* Predecessor in the list */
net_ipv6addr_t target; /* The target IP address to match */
net_ipv6addr_t netmask; /* The network mask to match */
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: net_del_ipv4route
*
* Description:
* Return 1 if the route is available, and delete the match route
*
* Input Parameters:
* route - The next route to examine
* arg - The match values (cast to void*)
*
* Returned Value:
* 0 if the entry is not a match; 1 if the entry matched and was cleared.
*
****************************************************************************/
#ifdef CONFIG_ROUTE_IPv4_RAMROUTE
static int net_del_ipv4route(FAR struct net_route_ipv4_s *route,
FAR void *arg)
{
FAR struct route_match_ipv4_s *match =
(FAR struct route_match_ipv4_s *)arg;
/* To match, the masked target address must be the same, and the masks
* must be the same.
*/
net_ipv4_dumproute("Comparing", route);
ninfo("With:\n");
ninfo(" target=%08" PRIx32 " netmask=%08" PRIx32 "\n",
HTONL(match->target), HTONL(match->netmask));
if (net_ipv4addr_maskcmp(route->target, match->target, match->netmask) &&
net_ipv4addr_cmp(route->netmask, match->netmask))
{
/* They match.. Remove the entry from the routing table */
if (match->prev)
{
ramroute_ipv4_remafter(
(FAR struct net_route_ipv4_entry_s *)match->prev,
&g_ipv4_routes);
}
else
{
ramroute_ipv4_remfirst(&g_ipv4_routes);
}
netlink_route_notify(route, RTM_DELROUTE, AF_INET);
/* And free the routing table entry by adding it to the free list */
net_freeroute_ipv4(route);
/* Return a non-zero value to terminate the traversal */
return 1;
}
/* Next time we are here, this will be the previous entry */
match->prev = route;
return 0;
}
#endif
#ifdef CONFIG_ROUTE_IPv6_RAMROUTE
static int net_del_ipv6route(FAR struct net_route_ipv6_s *route,
FAR void *arg)
{
FAR struct route_match_ipv6_s *match =
(FAR struct route_match_ipv6_s *)arg;
/* To match, the masked target address must be the same, and the masks
* must be the same.
*/
net_ipv6_dumproute("Comparing", route);
ninfo("With:\n");
ninfo(" target: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
HTONS(match->target[0]), HTONS(match->target[1]),
HTONS(match->target[2]), HTONS(match->target[3]),
HTONS(match->target[4]), HTONS(match->target[5]),
HTONS(match->target[6]), HTONS(match->target[7]));
ninfo(" netmask: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
HTONS(match->netmask[0]), HTONS(match->netmask[1]),
HTONS(match->netmask[2]), HTONS(match->netmask[3]),
HTONS(match->netmask[4]), HTONS(match->netmask[5]),
HTONS(match->netmask[6]), HTONS(match->netmask[7]));
if (net_ipv6addr_maskcmp(route->target, match->target, match->netmask) &&
net_ipv6addr_cmp(route->netmask, match->netmask))
{
/* They match.. Remove the entry from the routing table */
if (match->prev)
{
ramroute_ipv6_remafter(
(FAR struct net_route_ipv6_entry_s *)match->prev,
&g_ipv6_routes);
}
else
{
ramroute_ipv6_remfirst(&g_ipv6_routes);
}
netlink_route_notify(route, RTM_DELROUTE, AF_INET6);
/* And free the routing table entry by adding it to the free list */
net_freeroute_ipv6(route);
/* Return a non-zero value to terminate the traversal */
return 1;
}
/* Next time we are here, this will be the previous entry */
match->prev = route;
return 0;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: net_delroute_ipv4 and net_delroute_ipv6
*
* Description:
* Remove an existing route from the routing table
*
* Input Parameters:
*
* Returned Value:
* OK on success; Negated errno on failure.
*
****************************************************************************/
#ifdef CONFIG_ROUTE_IPv4_RAMROUTE
int net_delroute_ipv4(in_addr_t target, in_addr_t netmask)
{
struct route_match_ipv4_s match;
/* Set up the comparison structure */
match.prev = NULL;
net_ipv4addr_copy(match.target, target);
net_ipv4addr_copy(match.netmask, netmask);
/* Then remove the entry from the routing table */
return net_foreachroute_ipv4(net_del_ipv4route, &match) ? OK : -ENOENT;
}
#endif
#ifdef CONFIG_ROUTE_IPv6_RAMROUTE
int net_delroute_ipv6(net_ipv6addr_t target, net_ipv6addr_t netmask)
{
struct route_match_ipv6_s match;
/* Set up the comparison structure */
match.prev = NULL;
net_ipv6addr_copy(match.target, target);
net_ipv6addr_copy(match.netmask, netmask);
/* Then remove the entry from the routing table */
return net_foreachroute_ipv6(net_del_ipv6route, &match) ? OK : -ENOENT;
}
#endif
#endif /* CONFIG_ROUTE_IPv4_RAMROUTE || CONFIG_ROUTE_IPv6_RAMROUTE */