79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/****************************************************************************
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* libs/libc/net/lib_addroute.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <string.h>
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#include <net/route.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: net_addroute
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*
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* Description:
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* Add a new route to the routing table. This is just a convenience
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* wrapper for the SIOCADDRT ioctl call.
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*
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* Input Parameters:
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* sockfd - Any socket descriptor
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* target - Target address on external network(required)
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* netmask - Network mask defining the external network (required)
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* router - Router address that on our network that can forward to the
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* external network.
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* len - The address struct length.
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*
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* Returned Value:
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* OK on success; -1 on failure with the errno variable set appropriately.
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*
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****************************************************************************/
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int addroute(int sockfd, FAR void *target, FAR void *netmask,
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FAR void *router, socklen_t len)
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{
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struct rtentry entry;
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if (len < sizeof(struct in_addr) || len > sizeof(struct sockaddr_storage))
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{
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return -EINVAL;
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}
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/* Set up the rtentry structure */
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memset(&entry, 0, sizeof(struct rtentry));
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memcpy(&entry.rt_dst, target, len);
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memcpy(&entry.rt_genmask, netmask, len);
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memcpy(&entry.rt_gateway, router, len);
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/* Then perform the ioctl */
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return ioctl(sockfd, SIOCADDRT, (unsigned long)((uintptr_t)&entry));
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}
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