Squashed commit of the following:
netutils/netlib: Add netlib_ipv6adaptor() netutils/netlib: Add netlib_ipv4adaptor()
This commit is contained in:
parent
22d43409f2
commit
450624c370
examples
include/netutils
netutils/netlib
@ -87,8 +87,8 @@ examples/alarm
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CONFIG_EXAMPLES_ALARM_DEVPATH - RTC device path (/dev/rtc0)
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ONFIG_EXAMPLES_ALARM_SIGNO - Alarm signal
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examples/ap102
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^^^^^^^^^^^^^^
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examples/apa102
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^^^^^^^^^^^^^^^
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Rainbow example for APA102 LED Strip.
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@ -152,6 +152,7 @@ int netlib_set_dripv4addr(FAR const char *ifname, FAR const struct in_addr *addr
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int netlib_get_dripv4addr(FAR const char *ifname, FAR struct in_addr *addr);
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int netlib_set_ipv4netmask(FAR const char *ifname, FAR const struct in_addr *addr);
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int netlib_get_ipv4netmask(FAR const char *ifname, FAR struct in_addr *addr);
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int netlib_ipv4adaptor(in_addr_t destipaddr, FAR in_addr_t *srcipaddr);
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#endif
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#ifdef CONFIG_NET_IPv6
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@ -162,6 +163,8 @@ int netlib_set_ipv6netmask(FAR const char *ifname, FAR const struct in6_addr *ad
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uint8_t netlib_ipv6netmask2prefix(FAR const uint16_t *mask);
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void netlib_prefix2ipv6netmask(uint8_t preflen, FAR struct in6_addr *netmask);
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int netlib_ipv6adaptor(FAR const struct in6_addr *destipaddr,
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FAR struct in6_addr *srcipaddr);
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#endif
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#ifdef CONFIG_NETDEV_WIRELESS_IOCTL
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@ -49,6 +49,7 @@ ifeq ($(CONFIG_NET_IPv4),y)
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CSRCS += netlib_setipv4addr.c netlib_getipv4addr.c
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CSRCS += netlib_setdripv4addr.c netlib_setipv4netmask.c
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CSRCS += netlib_getdripv4addr.c netlib_getipv4netmask.c
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CSRCS += netlib_ipv4adaptor.c
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ifeq ($(CONFIG_NET_ARP),y)
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CSRCS += netlib_getarp.c netlib_setarp.c netlib_delarp.c
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endif
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@ -61,6 +62,7 @@ ifeq ($(CONFIG_NET_IPv6),y)
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CSRCS += netlib_setipv6addr.c netlib_getipv6addr.c
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CSRCS += netlib_setdripv6addr.c netlib_setipv6netmask.c
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CSRCS += netlib_prefix2ipv6netmask.c netlib_ipv6netmask2prefix.c
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CSRCS += netlib_ipv6adaptor.c
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ifeq ($(CONFIG_NET_ICMPv6_AUTOCONF),y)
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CSRCS += netlib_autoconfig.c
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endif
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170
netutils/netlib/netlib_ipv4adaptor.c
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170
netutils/netlib/netlib_ipv4adaptor.c
Normal file
@ -0,0 +1,170 @@
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/****************************************************************************
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* netutils/netlib/netlib_ipv4adaptor.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <sys/socket.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <net/if.h>
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#include <nuttx/net/ip.h>
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#include "netutils/netlib.h"
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#ifdef CONFIG_NET_IPv4
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netlib_ipv4adaptor
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****************************************************************************/
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int netlib_ipv4adaptor(in_addr_t destipaddr, FAR in_addr_t *srcipaddr)
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{
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FAR struct ifreq *ifr;
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struct ifconf ifc;
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int nintf;
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int ret;
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int sd;
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int i;
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/* REVISIT: Should check the routing table to see if there is a route
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* for the destipaddr before finding the device that provides the sub-net.
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*/
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/* Find the size of the buffer we need to hold the interface descriptions */
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ifc.ifc_req = NULL;
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ifc.ifc_len = 0;
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sd = socket(AF_INET, NETLIB_SOCK_IOCTL, 0);
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if (sd < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: socket() failed: %d\n", ret);
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return ret;
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}
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ret = ioctl(sd, SIOCGIFCONF, (unsigned long)((uintptr_t)&ifc));
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if (ret < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGIFCONF) failed: %d\n", ret);
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goto errout_with_sd;
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}
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/* Allocate the buffer to hold the interface descriptions */
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ifr = (FAR struct ifreq *)malloc(ifc.ifc_len);
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if (ifr == NULL)
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{
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fprintf(stderr, "ERROR: Failed to allocate IFC buffer\n");
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ret = -ENOMEM;
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goto errout_with_sd;
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}
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/* Get the interface descriptions */
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ifc.ifc_req = ifr;
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ret = ioctl(sd, SIOCGIFCONF, (unsigned long)((uintptr_t)&ifc));
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if (ret < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGIFCONF) failed: %d\n", ret);
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goto errout_with_ifr;
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}
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/* Find an interface that supports the subnet needed by the provided
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* IPv4 address.
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*/
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nintf = ifc.ifc_len / sizeof(struct ifreq);
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ret = -EHOSTUNREACH;
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for (i = 0; i < nintf; i++)
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{
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FAR struct ifreq *req = &ifr[i];
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FAR struct sockaddr_in *addr =
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(FAR struct sockaddr_in *)&req->ifr_addr;
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struct ifreq maskreq;
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FAR struct sockaddr_in *netmask;
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/* Get the network mask */
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strncpy(maskreq.ifr_name, ifr->ifr_name, IFNAMSIZ);
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ret = ioctl(sd, SIOCGIFNETMASK, (unsigned long)((uintptr_t)&maskreq));
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if (ret < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGIFNETMASK) failed: %d\n",
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ret);
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goto errout_with_ifr;
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}
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netmask = (FAR struct sockaddr_in *)&maskreq.ifr_addr;
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/* Does this device provide the sub-net? */
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if (net_ipv4addr_maskcmp(addr->sin_addr.s_addr, destipaddr,
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netmask->sin_addr.s_addr))
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{
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/* Yes.. return the IP address assigned to this adaptor */
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*srcipaddr = addr->sin_addr.s_addr;
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ret = OK;
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break;
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}
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}
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errout_with_ifr:
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free(ifr);
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errout_with_sd:
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close(sd);
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return ret;
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}
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#endif /* CONFIG_NET_IPv4 */
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174
netutils/netlib/netlib_ipv6adaptor.c
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174
netutils/netlib/netlib_ipv6adaptor.c
Normal file
@ -0,0 +1,174 @@
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/****************************************************************************
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* netutils/netlib/netlib_ipv6adaptor.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <sys/socket.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <net/if.h>
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#include <nuttx/net/ip.h>
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#include "netutils/netlib.h"
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#ifdef CONFIG_NET_IPv6
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netlib_ipv6adaptor
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****************************************************************************/
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int netlib_ipv6adaptor(FAR const struct in6_addr *destipaddr,
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FAR struct in6_addr *srcipaddr)
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{
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FAR struct lifreq *lifr;
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struct lifconf lifc;
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int nintf;
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int ret;
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int sd;
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int i;
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/* REVISIT: Should check the routing table to see if there is a route
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* for the destipaddr before finding the device that provides the sub-net.
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*/
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/* Find the size of the buffer we need to hold the interface descriptions */
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lifc.lifc_req = NULL;
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lifc.lifc_len = 0;
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sd = socket(AF_INET6, NETLIB_SOCK_IOCTL, 0);
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if (sd < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: socket() failed: %d\n", ret);
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return ret;
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}
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ret = ioctl(sd, SIOCGLIFCONF, (unsigned long)((uintptr_t)&lifc));
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if (ret < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGLIFCONF) failed: %d\n", ret);
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goto errout_with_sd;
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}
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/* Allocate the buffer to hold the interface descriptions */
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lifr = (FAR struct lifreq *)malloc(lifc.lifc_len);
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if (lifr == NULL)
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{
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fprintf(stderr, "ERROR: Failed to allocate LIFC buffer\n");
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ret = -ENOMEM;
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goto errout_with_sd;
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}
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/* Get the interface descriptions */
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lifc.lifc_req = lifr;
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ret = ioctl(sd, SIOCGLIFCONF, (unsigned long)((uintptr_t)&lifc));
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if (ret < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGLIFCONF) failed: %d\n", ret);
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goto errout_with_ifr;
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}
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/* Find an interface that supports the subnet needed by the provided
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* IPv6 address.
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*/
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nintf = lifc.lifc_len / sizeof(struct lifreq);
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ret = -EHOSTUNREACH;
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for (i = 0; i < nintf; i++)
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{
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FAR struct lifreq *req = &lifr[i];
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FAR struct sockaddr_in6 *addr =
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(FAR struct sockaddr_in6 *)&req->lifr_addr;
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struct lifreq maskreq;
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FAR struct sockaddr_in6 *netmask;
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int status;
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/* Get the network mask */
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strncpy(maskreq.lifr_name, lifr->lifr_name, IFNAMSIZ);
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status = ioctl(sd, SIOCGLIFNETMASK, (unsigned long)((uintptr_t)&maskreq));
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if (status < 0)
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{
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ret = -errno;
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fprintf(stderr, "ERROR: ioctl(SIOCGLIFNETMASK) failed: %d\n",
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ret);
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goto errout_with_ifr;
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}
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netmask = (FAR struct sockaddr_in6 *)&maskreq.lifr_addr;
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/* Does this device provide the sub-net? */
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if (net_ipv6addr_maskcmp(addr->sin6_addr.s6_addr16,
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destipaddr->s6_addr16,
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netmask->sin6_addr.s6_addr16))
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{
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/* Yes.. return the IP address assigned to this adaptor */
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net_ipv6addr_copy(srcipaddr->s6_addr16,
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addr->sin6_addr.s6_addr16);
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ret = OK;
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break;
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}
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}
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errout_with_ifr:
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free(lifr);
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errout_with_sd:
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close(sd);
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return ret;
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}
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#endif /* CONFIG_NET_IPv6 */
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Block a user