134 lines
4.5 KiB
C
134 lines
4.5 KiB
C
/****************************************************************************
|
|
* net/net_delroute.c
|
|
*
|
|
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/net/route.h>
|
|
|
|
#include "net_internal.h"
|
|
|
|
#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
struct route_match_s
|
|
{
|
|
uip_ipaddr_t target; /* The target IP address to match */
|
|
uip_ipaddr_t netmask; /* The network mask to match */
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: net_match
|
|
*
|
|
* Description:
|
|
* Return 1 if the route is available
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int net_match(FAR struct net_route_s *route, FAR void *arg)
|
|
{
|
|
FAR struct route_match_s *match = ( FAR struct route_match_s *)arg;
|
|
|
|
/* To match, the entry has to be in use, the masked target address must
|
|
* be the same, and the masks must be the same.
|
|
*/
|
|
|
|
if (route->inuse &&
|
|
uip_ipaddr_maskcmp(route->target, match->target, match->netmask) &&
|
|
uip_ipaddr_cmp(route->target, match->netmask))
|
|
{
|
|
/* They match.. clear the route table entry */
|
|
|
|
memset(route, 0, sizeof(struct net_route_s));
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: net_delroute
|
|
*
|
|
* Description:
|
|
* Remove an existing route from the routing table
|
|
*
|
|
* Parameters:
|
|
*
|
|
* Returned Value:
|
|
* OK on success; Negated errno on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int net_delroute(uip_ipaddr_t target, uip_ipaddr_t netmask)
|
|
{
|
|
struct route_match_s match;
|
|
|
|
/* Set up the comparison structure */
|
|
|
|
uip_ipaddr_copy(match.target, target);
|
|
uip_ipaddr_copy(match.netmask, netmask);
|
|
|
|
/* Then remove the entry from the routing table */
|
|
|
|
return net_foreachroute(net_match, &match) ? OK : -ENOENT;
|
|
}
|
|
|
|
#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS && !CONFIG_DISABLE_CLOCK */
|