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author | Gregory Nutt <gnutt@nuttx.org> | 2014-11-21 14:10:25 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-11-21 14:10:25 -0600 |
commit | 9b0f4c18f07dbead978f50897509b29cd5b1dcff (patch) | |
tree | 8ee14820743b364fb71eb19acea76006bbfa1078 | |
parent | b386491accf6bb557a98c26324a40702c76f52b1 (diff) | |
download | nuttx-9b0f4c18f07dbead978f50897509b29cd5b1dcff.tar.gz nuttx-9b0f4c18f07dbead978f50897509b29cd5b1dcff.tar.bz2 nuttx-9b0f4c18f07dbead978f50897509b29cd5b1dcff.zip |
Network: Add a file of IPv6 globals
-rw-r--r-- | nuttx/net/ipv6/Make.defs | 2 | ||||
-rw-r--r-- | nuttx/net/ipv6/ipv6.h | 10 | ||||
-rw-r--r-- | nuttx/net/ipv6/ipv6_global.c | 61 | ||||
-rw-r--r-- | nuttx/net/ipv6/ipv6_neighbor.c | 196 |
4 files changed, 268 insertions, 1 deletions
diff --git a/nuttx/net/ipv6/Make.defs b/nuttx/net/ipv6/Make.defs index de5562267..e419cd752 100644 --- a/nuttx/net/ipv6/Make.defs +++ b/nuttx/net/ipv6/Make.defs @@ -37,7 +37,7 @@ ifeq ($(CONFIG_NET_IPv6),y) -NET_CSRCS += net_neighbor.c +NET_CSRCS += ipv6_global.c ipv6_neighbor.c # Include utility build support diff --git a/nuttx/net/ipv6/ipv6.h b/nuttx/net/ipv6/ipv6.h index 2155ed621..7df96322d 100644 --- a/nuttx/net/ipv6/ipv6.h +++ b/nuttx/net/ipv6/ipv6.h @@ -51,6 +51,8 @@ #include <nuttx/net/ip.h> +#ifdef CONFIG_NET_IPv6 + /**************************************************************************** * Public Types ****************************************************************************/ @@ -65,6 +67,12 @@ struct net_neighbor_addr_s }; /**************************************************************************** + * Public Data + ****************************************************************************/ + +extern const in6_addr_t g_in6addr_any; + +/**************************************************************************** * Public Function Prototypes ****************************************************************************/ @@ -74,4 +82,6 @@ void net_neighbor_update(net_ipaddr_t ipaddr); struct net_neighbor_addr_s *net_neighbor_lookup(net_ipaddr_t ipaddr); void net_neighbor_periodic(void); +#endif /* CONFIG_NET_IPv6 */ #endif /* __NET_IPV6_IPV6_H */ + diff --git a/nuttx/net/ipv6/ipv6_global.c b/nuttx/net/ipv6/ipv6_global.c new file mode 100644 index 000000000..127d2d2f6 --- /dev/null +++ b/nuttx/net/ipv6/ipv6_global.c @@ -0,0 +1,61 @@ +/**************************************************************************** + * net/ipv6/ipv6_global.c + * + * Copyright (C) 2012, 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 <netinit/in.h> +#include "ipv6/ipv6.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +const in6_addr_t g_in6addr_any = IN6ADDR_ANY_INIT; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ diff --git a/nuttx/net/ipv6/ipv6_neighbor.c b/nuttx/net/ipv6/ipv6_neighbor.c new file mode 100644 index 000000000..454a5f0f2 --- /dev/null +++ b/nuttx/net/ipv6/ipv6_neighbor.c @@ -0,0 +1,196 @@ +/**************************************************************************** + * net/ipv6/ipv6_neighbor.c + * Database of link-local neighbors, used by IPv6 code and to be used by + * a future ARP code rewrite. + * + * Author: Adam Dunkels <adam@sics.se> + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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 <string.h> +#include <debug.h> + +#include <nuttx/net/ip.h> + +#include "ipv6/ipv6.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define MAX_TIME 128 + +#ifdef CONFIG_NET_IPV6_NCONF_ENTRIES +# define ENTRIES CONFIG_NET_IPV6_NCONF_ENTRIES +#else /* CONFIG_NET_IPV6_NCONF_ENTRIES */ +# define ENTRIES 8 +#endif /* CONFIG_NET_IPV6_NCONF_ENTRIES */ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct neighbor_entry +{ + net_ipaddr_t ipaddr; + struct net_neighbor_addr_s addr; + uint8_t time; +}; + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static struct neighbor_entry entries[ENTRIES]; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +static struct neighbor_entry *find_entry(net_ipaddr_t ipaddr) +{ + int i; + + for (i = 0; i < ENTRIES; ++i) + { + if (net_ipaddr_cmp(entries[i].ipaddr, ipaddr)) + { + return &entries[i]; + } + } + + return NULL; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +void net_neighbor_init(void) +{ + int i; + + for (i = 0; i < ENTRIES; ++i) + { + entries[i].time = MAX_TIME; + } +} + +void net_neighbor_periodic(void) +{ + int i; + + for (i = 0; i < ENTRIES; ++i) + { + if (entries[i].time < MAX_TIME) + { + entries[i].time++; + } + } +} + +void net_neighbor_add(net_ipaddr_t ipaddr, struct net_neighbor_addr_s *addr) +{ + uint8_t oldest_time; + int oldest; + int i; + + nlldbg("Add neighbor: %02x:%02x:%02x:%02x:%02x:%02x\n", + addr->addr.ether_addr_octet[0], addr->addr.ether_addr_octet[1], + addr->addr.ether_addr_octet[2], addr->addr.ether_addr_octet[3], + addr->addr.ether_addr_octet[4], addr->addr.ether_addr_octet[5]); + + /* Find the first unused entry or the oldest used entry. */ + + oldest_time = 0; + oldest = 0; + + for (i = 0; i < ENTRIES; ++i) + { + if (entries[i].time == MAX_TIME) + { + oldest = i; + break; + } + if (net_ipaddr_cmp(entries[i].ipaddr, addr)) + { + oldest = i; + break; + } + if (entries[i].time > oldest_time) + { + oldest = i; + oldest_time = entries[i].time; + } + } + + /* Use the oldest or first free entry (either pointed to by the + * "oldest" variable). + */ + + entries[oldest].time = 0; + net_ipaddr_copy(entries[oldest].ipaddr, ipaddr); + memcpy(&entries[oldest].addr, addr, sizeof(struct net_neighbor_addr_s)); +} + +void net_neighbor_update(net_ipaddr_t ipaddr) +{ + struct neighbor_entry *e; + + e = find_entry(ipaddr); + if (e != NULL) + { + e->time = 0; + } +} + +struct net_neighbor_addr_s *net_neighbor_lookup(net_ipaddr_t ipaddr) +{ + struct neighbor_entry *e; + + e = find_entry(ipaddr); + if (e != NULL) + { + nlldbg("Lookup neighbor: %02x:%02x:%02x:%02x:%02x:%02x\n", + e->addr.addr.ether_addr_octet[0], e->addr.addr.ether_addr_octet[1], + e->addr.addr.ether_addr_octet[2], e->addr.addr.ether_addr_octet[3], + e->addr.addr.ether_addr_octet[4], e->addr.addr.ether_addr_octet[5]); + + return &e->addr; + } + + return NULL; +} |