[457] | 1 | /**
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| 2 | * @file
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| 3 | * lwIP network interface abstraction
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| 4 | *
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| 5 | * @defgroup netif Network interface (NETIF)
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| 6 | * @ingroup callbackstyle_api
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| 7 | *
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| 8 | * @defgroup netif_ip4 IPv4 address handling
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| 9 | * @ingroup netif
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| 10 | *
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| 11 | * @defgroup netif_ip6 IPv6 address handling
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| 12 | * @ingroup netif
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| 13 | *
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| 14 | * @defgroup netif_cd Client data handling
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| 15 | * Store data (void*) on a netif for application usage.
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| 16 | * @see @ref LWIP_NUM_NETIF_CLIENT_DATA
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| 17 | * @ingroup netif
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| 18 | */
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| 19 |
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| 20 | /*
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| 21 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 22 | * All rights reserved.
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| 23 | *
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| 24 | * Redistribution and use in source and binary forms, with or without modification,
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| 25 | * are permitted provided that the following conditions are met:
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| 26 | *
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| 27 | * 1. Redistributions of source code must retain the above copyright notice,
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| 28 | * this list of conditions and the following disclaimer.
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| 29 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 30 | * this list of conditions and the following disclaimer in the documentation
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| 31 | * and/or other materials provided with the distribution.
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| 32 | * 3. The name of the author may not be used to endorse or promote products
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| 33 | * derived from this software without specific prior written permission.
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| 34 | *
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| 35 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 37 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 38 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 39 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 40 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 41 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 42 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 43 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 44 | * OF SUCH DAMAGE.
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| 45 | *
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| 46 | * This file is part of the lwIP TCP/IP stack.
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| 47 | *
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| 48 | * Author: Adam Dunkels <adam@sics.se>
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| 49 | */
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| 50 |
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| 51 | #include "lwip/opt.h"
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| 52 |
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| 53 | #include <string.h> /* memset */
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| 54 | #include <stdlib.h> /* atoi */
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| 55 |
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| 56 | #include "lwip/def.h"
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| 57 | #include "lwip/ip_addr.h"
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| 58 | #include "lwip/ip6_addr.h"
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| 59 | #include "lwip/netif.h"
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| 60 | #include "lwip/priv/tcp_priv.h"
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| 61 | #include "lwip/udp.h"
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| 62 | #include "lwip/priv/raw_priv.h"
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| 63 | #include "lwip/snmp.h"
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| 64 | #include "lwip/igmp.h"
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| 65 | #include "lwip/etharp.h"
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| 66 | #include "lwip/stats.h"
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| 67 | #include "lwip/sys.h"
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| 68 | #include "lwip/ip.h"
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| 69 | #if ENABLE_LOOPBACK
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| 70 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING
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| 71 | #include "lwip/tcpip.h"
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| 72 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
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| 73 | #endif /* ENABLE_LOOPBACK */
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| 74 |
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| 75 | #include "netif/ethernet.h"
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| 76 |
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| 77 | #if LWIP_AUTOIP
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| 78 | #include "lwip/autoip.h"
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| 79 | #endif /* LWIP_AUTOIP */
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| 80 | #if LWIP_DHCP
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| 81 | #include "lwip/dhcp.h"
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| 82 | #endif /* LWIP_DHCP */
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| 83 | #if LWIP_IPV6_DHCP6
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| 84 | #include "lwip/dhcp6.h"
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| 85 | #endif /* LWIP_IPV6_DHCP6 */
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| 86 | #if LWIP_IPV6_MLD
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| 87 | #include "lwip/mld6.h"
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| 88 | #endif /* LWIP_IPV6_MLD */
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| 89 | #if LWIP_IPV6
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| 90 | #include "lwip/nd6.h"
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| 91 | #endif
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| 92 |
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| 93 | #if LWIP_NETIF_STATUS_CALLBACK
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| 94 | #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0)
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| 95 | #else
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| 96 | #define NETIF_STATUS_CALLBACK(n)
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| 97 | #endif /* LWIP_NETIF_STATUS_CALLBACK */
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| 98 |
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| 99 | #if LWIP_NETIF_LINK_CALLBACK
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| 100 | #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0)
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| 101 | #else
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| 102 | #define NETIF_LINK_CALLBACK(n)
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| 103 | #endif /* LWIP_NETIF_LINK_CALLBACK */
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| 104 |
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| 105 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
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| 106 | static netif_ext_callback_t *ext_callback;
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| 107 | #endif
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| 108 |
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| 109 | #if !LWIP_SINGLE_NETIF
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| 110 | struct netif *netif_list;
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| 111 | #endif /* !LWIP_SINGLE_NETIF */
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| 112 | struct netif *netif_default;
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| 113 |
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| 114 | #define netif_index_to_num(index) ((index) - 1)
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| 115 | static u8_t netif_num;
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| 116 |
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| 117 | #if LWIP_NUM_NETIF_CLIENT_DATA > 0
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| 118 | static u8_t netif_client_id;
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| 119 | #endif
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| 120 |
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| 121 | #define NETIF_REPORT_TYPE_IPV4 0x01
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| 122 | #define NETIF_REPORT_TYPE_IPV6 0x02
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| 123 | static void netif_issue_reports(struct netif *netif, u8_t report_type);
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| 124 |
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| 125 | #if LWIP_IPV6
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| 126 | static err_t netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr);
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| 127 | #endif /* LWIP_IPV6 */
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| 128 | #if LWIP_IPV4
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| 129 | static err_t netif_null_output_ip4(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr);
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| 130 | #endif /* LWIP_IPV4 */
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| 131 |
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| 132 | #if LWIP_HAVE_LOOPIF
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| 133 | #if LWIP_IPV4
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| 134 | static err_t netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr);
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| 135 | #endif
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| 136 | #if LWIP_IPV6
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| 137 | static err_t netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr);
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| 138 | #endif
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| 139 |
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| 140 |
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| 141 | static struct netif loop_netif;
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| 142 |
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| 143 | /**
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| 144 | * Initialize a lwip network interface structure for a loopback interface
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| 145 | *
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| 146 | * @param netif the lwip network interface structure for this loopif
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| 147 | * @return ERR_OK if the loopif is initialized
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| 148 | * ERR_MEM if private data couldn't be allocated
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| 149 | */
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| 150 | static err_t
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| 151 | netif_loopif_init(struct netif *netif)
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| 152 | {
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| 153 | LWIP_ASSERT("netif_loopif_init: invalid netif", netif != NULL);
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| 154 |
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| 155 | /* initialize the snmp variables and counters inside the struct netif
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| 156 | * ifSpeed: no assumption can be made!
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| 157 | */
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| 158 | MIB2_INIT_NETIF(netif, snmp_ifType_softwareLoopback, 0);
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| 159 |
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| 160 | netif->name[0] = 'l';
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| 161 | netif->name[1] = 'o';
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| 162 | #if LWIP_IPV4
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| 163 | netif->output = netif_loop_output_ipv4;
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| 164 | #endif
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| 165 | #if LWIP_IPV6
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| 166 | netif->output_ip6 = netif_loop_output_ipv6;
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| 167 | #endif
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| 168 | #if LWIP_LOOPIF_MULTICAST
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| 169 | netif_set_flags(netif, NETIF_FLAG_IGMP);
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| 170 | #endif
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| 171 | NETIF_SET_CHECKSUM_CTRL(netif, NETIF_CHECKSUM_DISABLE_ALL);
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| 172 | return ERR_OK;
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| 173 | }
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| 174 | #endif /* LWIP_HAVE_LOOPIF */
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| 175 |
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| 176 | void
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| 177 | netif_init(void)
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| 178 | {
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| 179 | #if LWIP_HAVE_LOOPIF
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| 180 | #if LWIP_IPV4
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| 181 | #define LOOPIF_ADDRINIT &loop_ipaddr, &loop_netmask, &loop_gw,
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| 182 | ip4_addr_t loop_ipaddr, loop_netmask, loop_gw;
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| 183 | IP4_ADDR(&loop_gw, 127, 0, 0, 1);
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| 184 | IP4_ADDR(&loop_ipaddr, 127, 0, 0, 1);
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| 185 | IP4_ADDR(&loop_netmask, 255, 0, 0, 0);
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| 186 | #else /* LWIP_IPV4 */
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| 187 | #define LOOPIF_ADDRINIT
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| 188 | #endif /* LWIP_IPV4 */
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| 189 |
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| 190 | #if NO_SYS
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| 191 | netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, ip_input);
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| 192 | #else /* NO_SYS */
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| 193 | netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, tcpip_input);
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| 194 | #endif /* NO_SYS */
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| 195 |
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| 196 | #if LWIP_IPV6
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| 197 | IP_ADDR6_HOST(loop_netif.ip6_addr, 0, 0, 0, 0x00000001UL);
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| 198 | loop_netif.ip6_addr_state[0] = IP6_ADDR_VALID;
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| 199 | #endif /* LWIP_IPV6 */
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| 200 |
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| 201 | netif_set_link_up(&loop_netif);
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| 202 | netif_set_up(&loop_netif);
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| 203 |
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| 204 | #endif /* LWIP_HAVE_LOOPIF */
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| 205 | }
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| 206 |
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| 207 | /**
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| 208 | * @ingroup lwip_nosys
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| 209 | * Forwards a received packet for input processing with
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| 210 | * ethernet_input() or ip_input() depending on netif flags.
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| 211 | * Don't call directly, pass to netif_add() and call
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| 212 | * netif->input().
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| 213 | * Only works if the netif driver correctly sets
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| 214 | * NETIF_FLAG_ETHARP and/or NETIF_FLAG_ETHERNET flag!
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| 215 | */
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| 216 | err_t
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| 217 | netif_input(struct pbuf *p, struct netif *inp)
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| 218 | {
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| 219 | LWIP_ASSERT_CORE_LOCKED();
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| 220 |
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| 221 | LWIP_ASSERT("netif_input: invalid pbuf", p != NULL);
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| 222 | LWIP_ASSERT("netif_input: invalid netif", inp != NULL);
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| 223 |
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| 224 | #if LWIP_ETHERNET
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| 225 | if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
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| 226 | return ethernet_input(p, inp);
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| 227 | } else
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| 228 | #endif /* LWIP_ETHERNET */
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| 229 | return ip_input(p, inp);
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| 230 | }
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| 231 |
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| 232 | /**
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| 233 | * @ingroup netif
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| 234 | * Add a network interface to the list of lwIP netifs.
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| 235 | *
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| 236 | * Same as @ref netif_add but without IPv4 addresses
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| 237 | */
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| 238 | struct netif *
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| 239 | netif_add_noaddr(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input)
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| 240 | {
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| 241 | return netif_add(netif,
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| 242 | #if LWIP_IPV4
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| 243 | NULL, NULL, NULL,
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| 244 | #endif /* LWIP_IPV4*/
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| 245 | state, init, input);
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| 246 | }
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| 247 |
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| 248 | /**
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| 249 | * @ingroup netif
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| 250 | * Add a network interface to the list of lwIP netifs.
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| 251 | *
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| 252 | * @param netif a pre-allocated netif structure
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| 253 | * @param ipaddr IP address for the new netif
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| 254 | * @param netmask network mask for the new netif
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| 255 | * @param gw default gateway IP address for the new netif
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| 256 | * @param state opaque data passed to the new netif
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| 257 | * @param init callback function that initializes the interface
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| 258 | * @param input callback function that is called to pass
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| 259 | * ingress packets up in the protocol layer stack.\n
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| 260 | * It is recommended to use a function that passes the input directly
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| 261 | * to the stack (netif_input(), NO_SYS=1 mode) or via sending a
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| 262 | * message to TCPIP thread (tcpip_input(), NO_SYS=0 mode).\n
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| 263 | * These functions use netif flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
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| 264 | * to decide whether to forward to ethernet_input() or ip_input().
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| 265 | * In other words, the functions only work when the netif
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| 266 | * driver is implemented correctly!\n
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| 267 | * Most members of struct netif should be be initialized by the
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| 268 | * netif init function = netif driver (init parameter of this function).\n
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| 269 | * IPv6: Don't forget to call netif_create_ip6_linklocal_address() after
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| 270 | * setting the MAC address in struct netif.hwaddr
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| 271 | * (IPv6 requires a link-local address).
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| 272 | *
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| 273 | * @return netif, or NULL if failed.
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| 274 | */
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| 275 | struct netif *
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| 276 | netif_add(struct netif *netif,
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| 277 | #if LWIP_IPV4
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| 278 | const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw,
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| 279 | #endif /* LWIP_IPV4 */
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| 280 | void *state, netif_init_fn init, netif_input_fn input)
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| 281 | {
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| 282 | #if LWIP_IPV6
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| 283 | s8_t i;
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| 284 | #endif
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| 285 |
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| 286 | LWIP_ASSERT_CORE_LOCKED();
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| 287 |
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| 288 | #if LWIP_SINGLE_NETIF
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| 289 | if (netif_default != NULL) {
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| 290 | LWIP_ASSERT("single netif already set", 0);
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| 291 | return NULL;
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| 292 | }
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| 293 | #endif
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| 294 |
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| 295 | LWIP_ERROR("netif_add: invalid netif", netif != NULL, return NULL);
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| 296 | LWIP_ERROR("netif_add: No init function given", init != NULL, return NULL);
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| 297 |
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| 298 | #if LWIP_IPV4
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| 299 | if (ipaddr == NULL) {
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| 300 | ipaddr = ip_2_ip4(IP4_ADDR_ANY);
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| 301 | }
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| 302 | if (netmask == NULL) {
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| 303 | netmask = ip_2_ip4(IP4_ADDR_ANY);
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| 304 | }
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| 305 | if (gw == NULL) {
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| 306 | gw = ip_2_ip4(IP4_ADDR_ANY);
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| 307 | }
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| 308 |
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| 309 | /* reset new interface configuration state */
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| 310 | ip_addr_set_zero_ip4(&netif->ip_addr);
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| 311 | ip_addr_set_zero_ip4(&netif->netmask);
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| 312 | ip_addr_set_zero_ip4(&netif->gw);
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| 313 | netif->output = netif_null_output_ip4;
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| 314 | #endif /* LWIP_IPV4 */
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| 315 | #if LWIP_IPV6
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| 316 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
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| 317 | ip_addr_set_zero_ip6(&netif->ip6_addr[i]);
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| 318 | netif->ip6_addr_state[i] = IP6_ADDR_INVALID;
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| 319 | #if LWIP_IPV6_ADDRESS_LIFETIMES
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| 320 | netif->ip6_addr_valid_life[i] = IP6_ADDR_LIFE_STATIC;
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| 321 | netif->ip6_addr_pref_life[i] = IP6_ADDR_LIFE_STATIC;
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| 322 | #endif /* LWIP_IPV6_ADDRESS_LIFETIMES */
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| 323 | }
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| 324 | netif->output_ip6 = netif_null_output_ip6;
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| 325 | #endif /* LWIP_IPV6 */
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| 326 | NETIF_SET_CHECKSUM_CTRL(netif, NETIF_CHECKSUM_ENABLE_ALL);
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| 327 | netif->mtu = 0;
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| 328 | netif->flags = 0;
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| 329 | #ifdef netif_get_client_data
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| 330 | memset(netif->client_data, 0, sizeof(netif->client_data));
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| 331 | #endif /* LWIP_NUM_NETIF_CLIENT_DATA */
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| 332 | #if LWIP_IPV6
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| 333 | #if LWIP_IPV6_AUTOCONFIG
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| 334 | /* IPv6 address autoconfiguration not enabled by default */
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| 335 | netif->ip6_autoconfig_enabled = 0;
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| 336 | #endif /* LWIP_IPV6_AUTOCONFIG */
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| 337 | nd6_restart_netif(netif);
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| 338 | #endif /* LWIP_IPV6 */
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| 339 | #if LWIP_NETIF_STATUS_CALLBACK
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| 340 | netif->status_callback = NULL;
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| 341 | #endif /* LWIP_NETIF_STATUS_CALLBACK */
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| 342 | #if LWIP_NETIF_LINK_CALLBACK
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| 343 | netif->link_callback = NULL;
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| 344 | #endif /* LWIP_NETIF_LINK_CALLBACK */
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| 345 | #if LWIP_IGMP
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| 346 | netif->igmp_mac_filter = NULL;
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| 347 | #endif /* LWIP_IGMP */
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| 348 | #if LWIP_IPV6 && LWIP_IPV6_MLD
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| 349 | netif->mld_mac_filter = NULL;
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| 350 | #endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
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| 351 | #if ENABLE_LOOPBACK
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| 352 | netif->loop_first = NULL;
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| 353 | netif->loop_last = NULL;
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| 354 | #endif /* ENABLE_LOOPBACK */
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| 355 |
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| 356 | /* remember netif specific state information data */
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| 357 | netif->state = state;
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| 358 | netif->num = netif_num;
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| 359 | netif->input = input;
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| 360 |
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| 361 | NETIF_RESET_HINTS(netif);
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| 362 | #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
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| 363 | netif->loop_cnt_current = 0;
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| 364 | #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
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| 365 |
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| 366 | #if LWIP_IPV4
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| 367 | netif_set_addr(netif, ipaddr, netmask, gw);
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| 368 | #endif /* LWIP_IPV4 */
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| 369 |
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| 370 | /* call user specified initialization function for netif */
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| 371 | if (init(netif) != ERR_OK) {
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| 372 | return NULL;
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| 373 | }
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| 374 | #if LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES
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| 375 | /* Initialize the MTU for IPv6 to the one set by the netif driver.
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| 376 | This can be updated later by RA. */
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| 377 | netif->mtu6 = netif->mtu;
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| 378 | #endif /* LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES */
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| 379 |
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| 380 | #if !LWIP_SINGLE_NETIF
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| 381 | /* Assign a unique netif number in the range [0..254], so that (num+1) can
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| 382 | serve as an interface index that fits in a u8_t.
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| 383 | We assume that the new netif has not yet been added to the list here.
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| 384 | This algorithm is O(n^2), but that should be OK for lwIP.
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| 385 | */
|
---|
| 386 | {
|
---|
| 387 | struct netif *netif2;
|
---|
| 388 | int num_netifs;
|
---|
| 389 | do {
|
---|
| 390 | if (netif->num == 255) {
|
---|
| 391 | netif->num = 0;
|
---|
| 392 | }
|
---|
| 393 | num_netifs = 0;
|
---|
| 394 | for (netif2 = netif_list; netif2 != NULL; netif2 = netif2->next) {
|
---|
| 395 | LWIP_ASSERT("netif already added", netif2 != netif);
|
---|
| 396 | num_netifs++;
|
---|
| 397 | LWIP_ASSERT("too many netifs, max. supported number is 255", num_netifs <= 255);
|
---|
| 398 | if (netif2->num == netif->num) {
|
---|
| 399 | netif->num++;
|
---|
| 400 | break;
|
---|
| 401 | }
|
---|
| 402 | }
|
---|
| 403 | } while (netif2 != NULL);
|
---|
| 404 | }
|
---|
| 405 | if (netif->num == 254) {
|
---|
| 406 | netif_num = 0;
|
---|
| 407 | } else {
|
---|
| 408 | netif_num = (u8_t)(netif->num + 1);
|
---|
| 409 | }
|
---|
| 410 |
|
---|
| 411 | /* add this netif to the list */
|
---|
| 412 | netif->next = netif_list;
|
---|
| 413 | netif_list = netif;
|
---|
| 414 | #endif /* "LWIP_SINGLE_NETIF */
|
---|
| 415 | mib2_netif_added(netif);
|
---|
| 416 |
|
---|
| 417 | #if LWIP_IGMP
|
---|
| 418 | /* start IGMP processing */
|
---|
| 419 | if (netif->flags & NETIF_FLAG_IGMP) {
|
---|
| 420 | igmp_start(netif);
|
---|
| 421 | }
|
---|
| 422 | #endif /* LWIP_IGMP */
|
---|
| 423 |
|
---|
| 424 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP",
|
---|
| 425 | netif->name[0], netif->name[1]));
|
---|
| 426 | #if LWIP_IPV4
|
---|
| 427 | LWIP_DEBUGF(NETIF_DEBUG, (" addr "));
|
---|
| 428 | ip4_addr_debug_print(NETIF_DEBUG, ipaddr);
|
---|
| 429 | LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
|
---|
| 430 | ip4_addr_debug_print(NETIF_DEBUG, netmask);
|
---|
| 431 | LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
|
---|
| 432 | ip4_addr_debug_print(NETIF_DEBUG, gw);
|
---|
| 433 | #endif /* LWIP_IPV4 */
|
---|
| 434 | LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
|
---|
| 435 |
|
---|
| 436 | netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_ADDED, NULL);
|
---|
| 437 |
|
---|
| 438 | return netif;
|
---|
| 439 | }
|
---|
| 440 |
|
---|
| 441 | static void
|
---|
| 442 | netif_do_ip_addr_changed(const ip_addr_t *old_addr, const ip_addr_t *new_addr)
|
---|
| 443 | {
|
---|
| 444 | #if LWIP_TCP
|
---|
| 445 | tcp_netif_ip_addr_changed(old_addr, new_addr);
|
---|
| 446 | #endif /* LWIP_TCP */
|
---|
| 447 | #if LWIP_UDP
|
---|
| 448 | udp_netif_ip_addr_changed(old_addr, new_addr);
|
---|
| 449 | #endif /* LWIP_UDP */
|
---|
| 450 | #if LWIP_RAW
|
---|
| 451 | raw_netif_ip_addr_changed(old_addr, new_addr);
|
---|
| 452 | #endif /* LWIP_RAW */
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | #if LWIP_IPV4
|
---|
| 456 | static int
|
---|
| 457 | netif_do_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr, ip_addr_t *old_addr)
|
---|
| 458 | {
|
---|
| 459 | LWIP_ASSERT("invalid pointer", ipaddr != NULL);
|
---|
| 460 | LWIP_ASSERT("invalid pointer", old_addr != NULL);
|
---|
| 461 |
|
---|
| 462 | /* address is actually being changed? */
|
---|
| 463 | if (ip4_addr_cmp(ipaddr, netif_ip4_addr(netif)) == 0) {
|
---|
| 464 | ip_addr_t new_addr;
|
---|
| 465 | *ip_2_ip4(&new_addr) = *ipaddr;
|
---|
| 466 | IP_SET_TYPE_VAL(new_addr, IPADDR_TYPE_V4);
|
---|
| 467 |
|
---|
| 468 | ip_addr_copy(*old_addr, *netif_ip_addr4(netif));
|
---|
| 469 |
|
---|
| 470 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));
|
---|
| 471 | netif_do_ip_addr_changed(old_addr, &new_addr);
|
---|
| 472 |
|
---|
| 473 | mib2_remove_ip4(netif);
|
---|
| 474 | mib2_remove_route_ip4(0, netif);
|
---|
| 475 | /* set new IP address to netif */
|
---|
| 476 | ip4_addr_set(ip_2_ip4(&netif->ip_addr), ipaddr);
|
---|
| 477 | IP_SET_TYPE_VAL(netif->ip_addr, IPADDR_TYPE_V4);
|
---|
| 478 | mib2_add_ip4(netif);
|
---|
| 479 | mib2_add_route_ip4(0, netif);
|
---|
| 480 |
|
---|
| 481 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4);
|
---|
| 482 |
|
---|
| 483 | NETIF_STATUS_CALLBACK(netif);
|
---|
| 484 | return 1; /* address changed */
|
---|
| 485 | }
|
---|
| 486 | return 0; /* address unchanged */
|
---|
| 487 | }
|
---|
| 488 |
|
---|
| 489 | /**
|
---|
| 490 | * @ingroup netif_ip4
|
---|
| 491 | * Change the IP address of a network interface
|
---|
| 492 | *
|
---|
| 493 | * @param netif the network interface to change
|
---|
| 494 | * @param ipaddr the new IP address
|
---|
| 495 | *
|
---|
| 496 | * @note call netif_set_addr() if you also want to change netmask and
|
---|
| 497 | * default gateway
|
---|
| 498 | */
|
---|
| 499 | void
|
---|
| 500 | netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr)
|
---|
| 501 | {
|
---|
| 502 | ip_addr_t old_addr;
|
---|
| 503 |
|
---|
| 504 | LWIP_ERROR("netif_set_ipaddr: invalid netif", netif != NULL, return);
|
---|
| 505 |
|
---|
| 506 | /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */
|
---|
| 507 | if (ipaddr == NULL) {
|
---|
| 508 | ipaddr = IP4_ADDR_ANY4;
|
---|
| 509 | }
|
---|
| 510 |
|
---|
| 511 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 512 |
|
---|
| 513 | if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) {
|
---|
| 514 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 515 | netif_ext_callback_args_t args;
|
---|
| 516 | args.ipv4_changed.old_address = &old_addr;
|
---|
| 517 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_ADDRESS_CHANGED, &args);
|
---|
| 518 | #endif
|
---|
| 519 | }
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | static int
|
---|
| 523 | netif_do_set_netmask(struct netif *netif, const ip4_addr_t *netmask, ip_addr_t *old_nm)
|
---|
| 524 | {
|
---|
| 525 | /* address is actually being changed? */
|
---|
| 526 | if (ip4_addr_cmp(netmask, netif_ip4_netmask(netif)) == 0) {
|
---|
| 527 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 528 | LWIP_ASSERT("invalid pointer", old_nm != NULL);
|
---|
| 529 | ip_addr_copy(*old_nm, *netif_ip_netmask4(netif));
|
---|
| 530 | #else
|
---|
| 531 | LWIP_UNUSED_ARG(old_nm);
|
---|
| 532 | #endif
|
---|
| 533 | mib2_remove_route_ip4(0, netif);
|
---|
| 534 | /* set new netmask to netif */
|
---|
| 535 | ip4_addr_set(ip_2_ip4(&netif->netmask), netmask);
|
---|
| 536 | IP_SET_TYPE_VAL(netif->netmask, IPADDR_TYPE_V4);
|
---|
| 537 | mib2_add_route_ip4(0, netif);
|
---|
| 538 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
|
---|
| 539 | netif->name[0], netif->name[1],
|
---|
| 540 | ip4_addr1_16(netif_ip4_netmask(netif)),
|
---|
| 541 | ip4_addr2_16(netif_ip4_netmask(netif)),
|
---|
| 542 | ip4_addr3_16(netif_ip4_netmask(netif)),
|
---|
| 543 | ip4_addr4_16(netif_ip4_netmask(netif))));
|
---|
| 544 | return 1; /* netmask changed */
|
---|
| 545 | }
|
---|
| 546 | return 0; /* netmask unchanged */
|
---|
| 547 | }
|
---|
| 548 |
|
---|
| 549 | /**
|
---|
| 550 | * @ingroup netif_ip4
|
---|
| 551 | * Change the netmask of a network interface
|
---|
| 552 | *
|
---|
| 553 | * @param netif the network interface to change
|
---|
| 554 | * @param netmask the new netmask
|
---|
| 555 | *
|
---|
| 556 | * @note call netif_set_addr() if you also want to change ip address and
|
---|
| 557 | * default gateway
|
---|
| 558 | */
|
---|
| 559 | void
|
---|
| 560 | netif_set_netmask(struct netif *netif, const ip4_addr_t *netmask)
|
---|
| 561 | {
|
---|
| 562 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 563 | ip_addr_t old_nm_val;
|
---|
| 564 | ip_addr_t *old_nm = &old_nm_val;
|
---|
| 565 | #else
|
---|
| 566 | ip_addr_t *old_nm = NULL;
|
---|
| 567 | #endif
|
---|
| 568 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 569 |
|
---|
| 570 | LWIP_ERROR("netif_set_netmask: invalid netif", netif != NULL, return);
|
---|
| 571 |
|
---|
| 572 | /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */
|
---|
| 573 | if (netmask == NULL) {
|
---|
| 574 | netmask = IP4_ADDR_ANY4;
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | if (netif_do_set_netmask(netif, netmask, old_nm)) {
|
---|
| 578 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 579 | netif_ext_callback_args_t args;
|
---|
| 580 | args.ipv4_changed.old_netmask = old_nm;
|
---|
| 581 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_NETMASK_CHANGED, &args);
|
---|
| 582 | #endif
|
---|
| 583 | }
|
---|
| 584 | }
|
---|
| 585 |
|
---|
| 586 | static int
|
---|
| 587 | netif_do_set_gw(struct netif *netif, const ip4_addr_t *gw, ip_addr_t *old_gw)
|
---|
| 588 | {
|
---|
| 589 | /* address is actually being changed? */
|
---|
| 590 | if (ip4_addr_cmp(gw, netif_ip4_gw(netif)) == 0) {
|
---|
| 591 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 592 | LWIP_ASSERT("invalid pointer", old_gw != NULL);
|
---|
| 593 | ip_addr_copy(*old_gw, *netif_ip_gw4(netif));
|
---|
| 594 | #else
|
---|
| 595 | LWIP_UNUSED_ARG(old_gw);
|
---|
| 596 | #endif
|
---|
| 597 |
|
---|
| 598 | ip4_addr_set(ip_2_ip4(&netif->gw), gw);
|
---|
| 599 | IP_SET_TYPE_VAL(netif->gw, IPADDR_TYPE_V4);
|
---|
| 600 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
|
---|
| 601 | netif->name[0], netif->name[1],
|
---|
| 602 | ip4_addr1_16(netif_ip4_gw(netif)),
|
---|
| 603 | ip4_addr2_16(netif_ip4_gw(netif)),
|
---|
| 604 | ip4_addr3_16(netif_ip4_gw(netif)),
|
---|
| 605 | ip4_addr4_16(netif_ip4_gw(netif))));
|
---|
| 606 | return 1; /* gateway changed */
|
---|
| 607 | }
|
---|
| 608 | return 0; /* gateway unchanged */
|
---|
| 609 | }
|
---|
| 610 |
|
---|
| 611 | /**
|
---|
| 612 | * @ingroup netif_ip4
|
---|
| 613 | * Change the default gateway for a network interface
|
---|
| 614 | *
|
---|
| 615 | * @param netif the network interface to change
|
---|
| 616 | * @param gw the new default gateway
|
---|
| 617 | *
|
---|
| 618 | * @note call netif_set_addr() if you also want to change ip address and netmask
|
---|
| 619 | */
|
---|
| 620 | void
|
---|
| 621 | netif_set_gw(struct netif *netif, const ip4_addr_t *gw)
|
---|
| 622 | {
|
---|
| 623 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 624 | ip_addr_t old_gw_val;
|
---|
| 625 | ip_addr_t *old_gw = &old_gw_val;
|
---|
| 626 | #else
|
---|
| 627 | ip_addr_t *old_gw = NULL;
|
---|
| 628 | #endif
|
---|
| 629 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 630 |
|
---|
| 631 | LWIP_ERROR("netif_set_gw: invalid netif", netif != NULL, return);
|
---|
| 632 |
|
---|
| 633 | /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */
|
---|
| 634 | if (gw == NULL) {
|
---|
| 635 | gw = IP4_ADDR_ANY4;
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 | if (netif_do_set_gw(netif, gw, old_gw)) {
|
---|
| 639 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 640 | netif_ext_callback_args_t args;
|
---|
| 641 | args.ipv4_changed.old_gw = old_gw;
|
---|
| 642 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_GATEWAY_CHANGED, &args);
|
---|
| 643 | #endif
|
---|
| 644 | }
|
---|
| 645 | }
|
---|
| 646 |
|
---|
| 647 | /**
|
---|
| 648 | * @ingroup netif_ip4
|
---|
| 649 | * Change IP address configuration for a network interface (including netmask
|
---|
| 650 | * and default gateway).
|
---|
| 651 | *
|
---|
| 652 | * @param netif the network interface to change
|
---|
| 653 | * @param ipaddr the new IP address
|
---|
| 654 | * @param netmask the new netmask
|
---|
| 655 | * @param gw the new default gateway
|
---|
| 656 | */
|
---|
| 657 | void
|
---|
| 658 | netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask,
|
---|
| 659 | const ip4_addr_t *gw)
|
---|
| 660 | {
|
---|
| 661 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 662 | netif_nsc_reason_t change_reason = LWIP_NSC_NONE;
|
---|
| 663 | netif_ext_callback_args_t cb_args;
|
---|
| 664 | ip_addr_t old_nm_val;
|
---|
| 665 | ip_addr_t old_gw_val;
|
---|
| 666 | ip_addr_t *old_nm = &old_nm_val;
|
---|
| 667 | ip_addr_t *old_gw = &old_gw_val;
|
---|
| 668 | #else
|
---|
| 669 | ip_addr_t *old_nm = NULL;
|
---|
| 670 | ip_addr_t *old_gw = NULL;
|
---|
| 671 | #endif
|
---|
| 672 | ip_addr_t old_addr;
|
---|
| 673 | int remove;
|
---|
| 674 |
|
---|
| 675 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 676 |
|
---|
| 677 | /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */
|
---|
| 678 | if (ipaddr == NULL) {
|
---|
| 679 | ipaddr = IP4_ADDR_ANY4;
|
---|
| 680 | }
|
---|
| 681 | if (netmask == NULL) {
|
---|
| 682 | netmask = IP4_ADDR_ANY4;
|
---|
| 683 | }
|
---|
| 684 | if (gw == NULL) {
|
---|
| 685 | gw = IP4_ADDR_ANY4;
|
---|
| 686 | }
|
---|
| 687 |
|
---|
| 688 | remove = ip4_addr_isany(ipaddr);
|
---|
| 689 | if (remove) {
|
---|
| 690 | /* when removing an address, we have to remove it *before* changing netmask/gw
|
---|
| 691 | to ensure that tcp RST segment can be sent correctly */
|
---|
| 692 | if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) {
|
---|
| 693 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 694 | change_reason |= LWIP_NSC_IPV4_ADDRESS_CHANGED;
|
---|
| 695 | cb_args.ipv4_changed.old_address = &old_addr;
|
---|
| 696 | #endif
|
---|
| 697 | }
|
---|
| 698 | }
|
---|
| 699 | if (netif_do_set_netmask(netif, netmask, old_nm)) {
|
---|
| 700 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 701 | change_reason |= LWIP_NSC_IPV4_NETMASK_CHANGED;
|
---|
| 702 | cb_args.ipv4_changed.old_netmask = old_nm;
|
---|
| 703 | #endif
|
---|
| 704 | }
|
---|
| 705 | if (netif_do_set_gw(netif, gw, old_gw)) {
|
---|
| 706 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 707 | change_reason |= LWIP_NSC_IPV4_GATEWAY_CHANGED;
|
---|
| 708 | cb_args.ipv4_changed.old_gw = old_gw;
|
---|
| 709 | #endif
|
---|
| 710 | }
|
---|
| 711 | if (!remove) {
|
---|
| 712 | /* set ipaddr last to ensure netmask/gw have been set when status callback is called */
|
---|
| 713 | if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) {
|
---|
| 714 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 715 | change_reason |= LWIP_NSC_IPV4_ADDRESS_CHANGED;
|
---|
| 716 | cb_args.ipv4_changed.old_address = &old_addr;
|
---|
| 717 | #endif
|
---|
| 718 | }
|
---|
| 719 | }
|
---|
| 720 |
|
---|
| 721 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 722 | if (change_reason != LWIP_NSC_NONE) {
|
---|
| 723 | change_reason |= LWIP_NSC_IPV4_SETTINGS_CHANGED;
|
---|
| 724 | netif_invoke_ext_callback(netif, change_reason, &cb_args);
|
---|
| 725 | }
|
---|
| 726 | #endif
|
---|
| 727 | }
|
---|
| 728 | #endif /* LWIP_IPV4*/
|
---|
| 729 |
|
---|
| 730 | /**
|
---|
| 731 | * @ingroup netif
|
---|
| 732 | * Remove a network interface from the list of lwIP netifs.
|
---|
| 733 | *
|
---|
| 734 | * @param netif the network interface to remove
|
---|
| 735 | */
|
---|
| 736 | void
|
---|
| 737 | netif_remove(struct netif *netif)
|
---|
| 738 | {
|
---|
| 739 | #if LWIP_IPV6
|
---|
| 740 | int i;
|
---|
| 741 | #endif
|
---|
| 742 |
|
---|
| 743 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 744 |
|
---|
| 745 | if (netif == NULL) {
|
---|
| 746 | return;
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 | netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_REMOVED, NULL);
|
---|
| 750 |
|
---|
| 751 | #if LWIP_IPV4
|
---|
| 752 | if (!ip4_addr_isany_val(*netif_ip4_addr(netif))) {
|
---|
| 753 | netif_do_ip_addr_changed(netif_ip_addr4(netif), NULL);
|
---|
| 754 | }
|
---|
| 755 |
|
---|
| 756 | #if LWIP_IGMP
|
---|
| 757 | /* stop IGMP processing */
|
---|
| 758 | if (netif->flags & NETIF_FLAG_IGMP) {
|
---|
| 759 | igmp_stop(netif);
|
---|
| 760 | }
|
---|
| 761 | #endif /* LWIP_IGMP */
|
---|
| 762 | #endif /* LWIP_IPV4*/
|
---|
| 763 |
|
---|
| 764 | #if LWIP_IPV6
|
---|
| 765 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
|
---|
| 766 | if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i))) {
|
---|
| 767 | netif_do_ip_addr_changed(netif_ip_addr6(netif, i), NULL);
|
---|
| 768 | }
|
---|
| 769 | }
|
---|
| 770 | #if LWIP_IPV6_MLD
|
---|
| 771 | /* stop MLD processing */
|
---|
| 772 | mld6_stop(netif);
|
---|
| 773 | #endif /* LWIP_IPV6_MLD */
|
---|
| 774 | #endif /* LWIP_IPV6 */
|
---|
| 775 | if (netif_is_up(netif)) {
|
---|
| 776 | /* set netif down before removing (call callback function) */
|
---|
| 777 | netif_set_down(netif);
|
---|
| 778 | }
|
---|
| 779 |
|
---|
| 780 | mib2_remove_ip4(netif);
|
---|
| 781 |
|
---|
| 782 | /* this netif is default? */
|
---|
| 783 | if (netif_default == netif) {
|
---|
| 784 | /* reset default netif */
|
---|
| 785 | netif_set_default(NULL);
|
---|
| 786 | }
|
---|
| 787 | #if !LWIP_SINGLE_NETIF
|
---|
| 788 | /* is it the first netif? */
|
---|
| 789 | if (netif_list == netif) {
|
---|
| 790 | netif_list = netif->next;
|
---|
| 791 | } else {
|
---|
| 792 | /* look for netif further down the list */
|
---|
| 793 | struct netif *tmp_netif;
|
---|
| 794 | NETIF_FOREACH(tmp_netif) {
|
---|
| 795 | if (tmp_netif->next == netif) {
|
---|
| 796 | tmp_netif->next = netif->next;
|
---|
| 797 | break;
|
---|
| 798 | }
|
---|
| 799 | }
|
---|
| 800 | if (tmp_netif == NULL) {
|
---|
| 801 | return; /* netif is not on the list */
|
---|
| 802 | }
|
---|
| 803 | }
|
---|
| 804 | #endif /* !LWIP_SINGLE_NETIF */
|
---|
| 805 | mib2_netif_removed(netif);
|
---|
| 806 | #if LWIP_NETIF_REMOVE_CALLBACK
|
---|
| 807 | if (netif->remove_callback) {
|
---|
| 808 | netif->remove_callback(netif);
|
---|
| 809 | }
|
---|
| 810 | #endif /* LWIP_NETIF_REMOVE_CALLBACK */
|
---|
| 811 | LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
|
---|
| 812 | }
|
---|
| 813 |
|
---|
| 814 | /**
|
---|
| 815 | * @ingroup netif
|
---|
| 816 | * Set a network interface as the default network interface
|
---|
| 817 | * (used to output all packets for which no specific route is found)
|
---|
| 818 | *
|
---|
| 819 | * @param netif the default network interface
|
---|
| 820 | */
|
---|
| 821 | void
|
---|
| 822 | netif_set_default(struct netif *netif)
|
---|
| 823 | {
|
---|
| 824 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 825 |
|
---|
| 826 | if (netif == NULL) {
|
---|
| 827 | /* remove default route */
|
---|
| 828 | mib2_remove_route_ip4(1, netif);
|
---|
| 829 | } else {
|
---|
| 830 | /* install default route */
|
---|
| 831 | mib2_add_route_ip4(1, netif);
|
---|
| 832 | }
|
---|
| 833 | netif_default = netif;
|
---|
| 834 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
|
---|
| 835 | netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
|
---|
| 836 | }
|
---|
| 837 |
|
---|
| 838 | /**
|
---|
| 839 | * @ingroup netif
|
---|
| 840 | * Bring an interface up, available for processing
|
---|
| 841 | * traffic.
|
---|
| 842 | */
|
---|
| 843 | void
|
---|
| 844 | netif_set_up(struct netif *netif)
|
---|
| 845 | {
|
---|
| 846 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 847 |
|
---|
| 848 | LWIP_ERROR("netif_set_up: invalid netif", netif != NULL, return);
|
---|
| 849 |
|
---|
| 850 | if (!(netif->flags & NETIF_FLAG_UP)) {
|
---|
| 851 | netif_set_flags(netif, NETIF_FLAG_UP);
|
---|
| 852 |
|
---|
| 853 | MIB2_COPY_SYSUPTIME_TO(&netif->ts);
|
---|
| 854 |
|
---|
| 855 | NETIF_STATUS_CALLBACK(netif);
|
---|
| 856 |
|
---|
| 857 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 858 | {
|
---|
| 859 | netif_ext_callback_args_t args;
|
---|
| 860 | args.status_changed.state = 1;
|
---|
| 861 | netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args);
|
---|
| 862 | }
|
---|
| 863 | #endif
|
---|
| 864 |
|
---|
| 865 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6);
|
---|
| 866 | #if LWIP_IPV6
|
---|
| 867 | nd6_restart_netif(netif);
|
---|
| 868 | #endif /* LWIP_IPV6 */
|
---|
| 869 | }
|
---|
| 870 | }
|
---|
| 871 |
|
---|
| 872 | /** Send ARP/IGMP/MLD/RS events, e.g. on link-up/netif-up or addr-change
|
---|
| 873 | */
|
---|
| 874 | static void
|
---|
| 875 | netif_issue_reports(struct netif *netif, u8_t report_type)
|
---|
| 876 | {
|
---|
| 877 | LWIP_ASSERT("netif_issue_reports: invalid netif", netif != NULL);
|
---|
| 878 |
|
---|
| 879 | /* Only send reports when both link and admin states are up */
|
---|
| 880 | if (!(netif->flags & NETIF_FLAG_LINK_UP) ||
|
---|
| 881 | !(netif->flags & NETIF_FLAG_UP)) {
|
---|
| 882 | return;
|
---|
| 883 | }
|
---|
| 884 |
|
---|
| 885 | #if LWIP_IPV4
|
---|
| 886 | if ((report_type & NETIF_REPORT_TYPE_IPV4) &&
|
---|
| 887 | !ip4_addr_isany_val(*netif_ip4_addr(netif))) {
|
---|
| 888 | #if LWIP_ARP
|
---|
| 889 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
|
---|
| 890 | if (netif->flags & (NETIF_FLAG_ETHARP)) {
|
---|
| 891 | etharp_gratuitous(netif);
|
---|
| 892 | }
|
---|
| 893 | #endif /* LWIP_ARP */
|
---|
| 894 |
|
---|
| 895 | #if LWIP_IGMP
|
---|
| 896 | /* resend IGMP memberships */
|
---|
| 897 | if (netif->flags & NETIF_FLAG_IGMP) {
|
---|
| 898 | igmp_report_groups(netif);
|
---|
| 899 | }
|
---|
| 900 | #endif /* LWIP_IGMP */
|
---|
| 901 | }
|
---|
| 902 | #endif /* LWIP_IPV4 */
|
---|
| 903 |
|
---|
| 904 | #if LWIP_IPV6
|
---|
| 905 | if (report_type & NETIF_REPORT_TYPE_IPV6) {
|
---|
| 906 | #if LWIP_IPV6_MLD
|
---|
| 907 | /* send mld memberships */
|
---|
| 908 | mld6_report_groups(netif);
|
---|
| 909 | #endif /* LWIP_IPV6_MLD */
|
---|
| 910 | }
|
---|
| 911 | #endif /* LWIP_IPV6 */
|
---|
| 912 | }
|
---|
| 913 |
|
---|
| 914 | /**
|
---|
| 915 | * @ingroup netif
|
---|
| 916 | * Bring an interface down, disabling any traffic processing.
|
---|
| 917 | */
|
---|
| 918 | void
|
---|
| 919 | netif_set_down(struct netif *netif)
|
---|
| 920 | {
|
---|
| 921 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 922 |
|
---|
| 923 | LWIP_ERROR("netif_set_down: invalid netif", netif != NULL, return);
|
---|
| 924 |
|
---|
| 925 | if (netif->flags & NETIF_FLAG_UP) {
|
---|
| 926 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 927 | {
|
---|
| 928 | netif_ext_callback_args_t args;
|
---|
| 929 | args.status_changed.state = 0;
|
---|
| 930 | netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args);
|
---|
| 931 | }
|
---|
| 932 | #endif
|
---|
| 933 |
|
---|
| 934 | netif_clear_flags(netif, NETIF_FLAG_UP);
|
---|
| 935 | MIB2_COPY_SYSUPTIME_TO(&netif->ts);
|
---|
| 936 |
|
---|
| 937 | #if LWIP_IPV4 && LWIP_ARP
|
---|
| 938 | if (netif->flags & NETIF_FLAG_ETHARP) {
|
---|
| 939 | etharp_cleanup_netif(netif);
|
---|
| 940 | }
|
---|
| 941 | #endif /* LWIP_IPV4 && LWIP_ARP */
|
---|
| 942 |
|
---|
| 943 | #if LWIP_IPV6
|
---|
| 944 | nd6_cleanup_netif(netif);
|
---|
| 945 | #endif /* LWIP_IPV6 */
|
---|
| 946 |
|
---|
| 947 | NETIF_STATUS_CALLBACK(netif);
|
---|
| 948 | }
|
---|
| 949 | }
|
---|
| 950 |
|
---|
| 951 | #if LWIP_NETIF_STATUS_CALLBACK
|
---|
| 952 | /**
|
---|
| 953 | * @ingroup netif
|
---|
| 954 | * Set callback to be called when interface is brought up/down or address is changed while up
|
---|
| 955 | */
|
---|
| 956 | void
|
---|
| 957 | netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)
|
---|
| 958 | {
|
---|
| 959 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 960 |
|
---|
| 961 | if (netif) {
|
---|
| 962 | netif->status_callback = status_callback;
|
---|
| 963 | }
|
---|
| 964 | }
|
---|
| 965 | #endif /* LWIP_NETIF_STATUS_CALLBACK */
|
---|
| 966 |
|
---|
| 967 | #if LWIP_NETIF_REMOVE_CALLBACK
|
---|
| 968 | /**
|
---|
| 969 | * @ingroup netif
|
---|
| 970 | * Set callback to be called when the interface has been removed
|
---|
| 971 | */
|
---|
| 972 | void
|
---|
| 973 | netif_set_remove_callback(struct netif *netif, netif_status_callback_fn remove_callback)
|
---|
| 974 | {
|
---|
| 975 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 976 |
|
---|
| 977 | if (netif) {
|
---|
| 978 | netif->remove_callback = remove_callback;
|
---|
| 979 | }
|
---|
| 980 | }
|
---|
| 981 | #endif /* LWIP_NETIF_REMOVE_CALLBACK */
|
---|
| 982 |
|
---|
| 983 | /**
|
---|
| 984 | * @ingroup netif
|
---|
| 985 | * Called by a driver when its link goes up
|
---|
| 986 | */
|
---|
| 987 | void
|
---|
| 988 | netif_set_link_up(struct netif *netif)
|
---|
| 989 | {
|
---|
| 990 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 991 |
|
---|
| 992 | LWIP_ERROR("netif_set_link_up: invalid netif", netif != NULL, return);
|
---|
| 993 |
|
---|
| 994 | if (!(netif->flags & NETIF_FLAG_LINK_UP)) {
|
---|
| 995 | netif_set_flags(netif, NETIF_FLAG_LINK_UP);
|
---|
| 996 |
|
---|
| 997 | #if LWIP_DHCP
|
---|
| 998 | dhcp_network_changed(netif);
|
---|
| 999 | #endif /* LWIP_DHCP */
|
---|
| 1000 |
|
---|
| 1001 | #if LWIP_AUTOIP
|
---|
| 1002 | autoip_network_changed(netif);
|
---|
| 1003 | #endif /* LWIP_AUTOIP */
|
---|
| 1004 |
|
---|
| 1005 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6);
|
---|
| 1006 | #if LWIP_IPV6
|
---|
| 1007 | nd6_restart_netif(netif);
|
---|
| 1008 | #endif /* LWIP_IPV6 */
|
---|
| 1009 |
|
---|
| 1010 | NETIF_LINK_CALLBACK(netif);
|
---|
| 1011 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 1012 | {
|
---|
| 1013 | netif_ext_callback_args_t args;
|
---|
| 1014 | args.link_changed.state = 1;
|
---|
| 1015 | netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args);
|
---|
| 1016 | }
|
---|
| 1017 | #endif
|
---|
| 1018 | }
|
---|
| 1019 | }
|
---|
| 1020 |
|
---|
| 1021 | /**
|
---|
| 1022 | * @ingroup netif
|
---|
| 1023 | * Called by a driver when its link goes down
|
---|
| 1024 | */
|
---|
| 1025 | void
|
---|
| 1026 | netif_set_link_down(struct netif *netif)
|
---|
| 1027 | {
|
---|
| 1028 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1029 |
|
---|
| 1030 | LWIP_ERROR("netif_set_link_down: invalid netif", netif != NULL, return);
|
---|
| 1031 |
|
---|
| 1032 | if (netif->flags & NETIF_FLAG_LINK_UP) {
|
---|
| 1033 | netif_clear_flags(netif, NETIF_FLAG_LINK_UP);
|
---|
| 1034 | NETIF_LINK_CALLBACK(netif);
|
---|
| 1035 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 1036 | {
|
---|
| 1037 | netif_ext_callback_args_t args;
|
---|
| 1038 | args.link_changed.state = 0;
|
---|
| 1039 | netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args);
|
---|
| 1040 | }
|
---|
| 1041 | #endif
|
---|
| 1042 | }
|
---|
| 1043 | }
|
---|
| 1044 |
|
---|
| 1045 | #if LWIP_NETIF_LINK_CALLBACK
|
---|
| 1046 | /**
|
---|
| 1047 | * @ingroup netif
|
---|
| 1048 | * Set callback to be called when link is brought up/down
|
---|
| 1049 | */
|
---|
| 1050 | void
|
---|
| 1051 | netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback)
|
---|
| 1052 | {
|
---|
| 1053 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1054 |
|
---|
| 1055 | if (netif) {
|
---|
| 1056 | netif->link_callback = link_callback;
|
---|
| 1057 | }
|
---|
| 1058 | }
|
---|
| 1059 | #endif /* LWIP_NETIF_LINK_CALLBACK */
|
---|
| 1060 |
|
---|
| 1061 | #if ENABLE_LOOPBACK
|
---|
| 1062 | /**
|
---|
| 1063 | * @ingroup netif
|
---|
| 1064 | * Send an IP packet to be received on the same netif (loopif-like).
|
---|
| 1065 | * The pbuf is simply copied and handed back to netif->input.
|
---|
| 1066 | * In multithreaded mode, this is done directly since netif->input must put
|
---|
| 1067 | * the packet on a queue.
|
---|
| 1068 | * In callback mode, the packet is put on an internal queue and is fed to
|
---|
| 1069 | * netif->input by netif_poll().
|
---|
| 1070 | *
|
---|
| 1071 | * @param netif the lwip network interface structure
|
---|
| 1072 | * @param p the (IP) packet to 'send'
|
---|
| 1073 | * @return ERR_OK if the packet has been sent
|
---|
| 1074 | * ERR_MEM if the pbuf used to copy the packet couldn't be allocated
|
---|
| 1075 | */
|
---|
| 1076 | err_t
|
---|
| 1077 | netif_loop_output(struct netif *netif, struct pbuf *p)
|
---|
| 1078 | {
|
---|
| 1079 | struct pbuf *r;
|
---|
| 1080 | err_t err;
|
---|
| 1081 | struct pbuf *last;
|
---|
| 1082 | #if LWIP_LOOPBACK_MAX_PBUFS
|
---|
| 1083 | u16_t clen = 0;
|
---|
| 1084 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
---|
| 1085 | /* If we have a loopif, SNMP counters are adjusted for it,
|
---|
| 1086 | * if not they are adjusted for 'netif'. */
|
---|
| 1087 | #if MIB2_STATS
|
---|
| 1088 | #if LWIP_HAVE_LOOPIF
|
---|
| 1089 | struct netif *stats_if = &loop_netif;
|
---|
| 1090 | #else /* LWIP_HAVE_LOOPIF */
|
---|
| 1091 | struct netif *stats_if = netif;
|
---|
| 1092 | #endif /* LWIP_HAVE_LOOPIF */
|
---|
| 1093 | #endif /* MIB2_STATS */
|
---|
| 1094 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING
|
---|
| 1095 | u8_t schedule_poll = 0;
|
---|
| 1096 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
---|
| 1097 | SYS_ARCH_DECL_PROTECT(lev);
|
---|
| 1098 |
|
---|
| 1099 | LWIP_ASSERT("netif_loop_output: invalid netif", netif != NULL);
|
---|
| 1100 | LWIP_ASSERT("netif_loop_output: invalid pbuf", p != NULL);
|
---|
| 1101 |
|
---|
| 1102 | /* Allocate a new pbuf */
|
---|
| 1103 | r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
|
---|
| 1104 | if (r == NULL) {
|
---|
| 1105 | LINK_STATS_INC(link.memerr);
|
---|
| 1106 | LINK_STATS_INC(link.drop);
|
---|
| 1107 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards);
|
---|
| 1108 | return ERR_MEM;
|
---|
| 1109 | }
|
---|
| 1110 | #if LWIP_LOOPBACK_MAX_PBUFS
|
---|
| 1111 | clen = pbuf_clen(r);
|
---|
| 1112 | /* check for overflow or too many pbuf on queue */
|
---|
| 1113 | if (((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
|
---|
| 1114 | ((netif->loop_cnt_current + clen) > LWIP_MIN(LWIP_LOOPBACK_MAX_PBUFS, 0xFFFF))) {
|
---|
| 1115 | pbuf_free(r);
|
---|
| 1116 | LINK_STATS_INC(link.memerr);
|
---|
| 1117 | LINK_STATS_INC(link.drop);
|
---|
| 1118 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards);
|
---|
| 1119 | return ERR_MEM;
|
---|
| 1120 | }
|
---|
| 1121 | netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current + clen);
|
---|
| 1122 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
---|
| 1123 |
|
---|
| 1124 | /* Copy the whole pbuf queue p into the single pbuf r */
|
---|
| 1125 | if ((err = pbuf_copy(r, p)) != ERR_OK) {
|
---|
| 1126 | pbuf_free(r);
|
---|
| 1127 | LINK_STATS_INC(link.memerr);
|
---|
| 1128 | LINK_STATS_INC(link.drop);
|
---|
| 1129 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards);
|
---|
| 1130 | return err;
|
---|
| 1131 | }
|
---|
| 1132 |
|
---|
| 1133 | /* Put the packet on a linked list which gets emptied through calling
|
---|
| 1134 | netif_poll(). */
|
---|
| 1135 |
|
---|
| 1136 | /* let last point to the last pbuf in chain r */
|
---|
| 1137 | for (last = r; last->next != NULL; last = last->next) {
|
---|
| 1138 | /* nothing to do here, just get to the last pbuf */
|
---|
| 1139 | }
|
---|
| 1140 |
|
---|
| 1141 | SYS_ARCH_PROTECT(lev);
|
---|
| 1142 | if (netif->loop_first != NULL) {
|
---|
| 1143 | LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
|
---|
| 1144 | netif->loop_last->next = r;
|
---|
| 1145 | netif->loop_last = last;
|
---|
| 1146 | } else {
|
---|
| 1147 | netif->loop_first = r;
|
---|
| 1148 | netif->loop_last = last;
|
---|
| 1149 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING
|
---|
| 1150 | /* No existing packets queued, schedule poll */
|
---|
| 1151 | schedule_poll = 1;
|
---|
| 1152 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
---|
| 1153 | }
|
---|
| 1154 | SYS_ARCH_UNPROTECT(lev);
|
---|
| 1155 |
|
---|
| 1156 | LINK_STATS_INC(link.xmit);
|
---|
| 1157 | MIB2_STATS_NETIF_ADD(stats_if, ifoutoctets, p->tot_len);
|
---|
| 1158 | MIB2_STATS_NETIF_INC(stats_if, ifoutucastpkts);
|
---|
| 1159 |
|
---|
| 1160 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING
|
---|
| 1161 | /* For multithreading environment, schedule a call to netif_poll */
|
---|
| 1162 | if (schedule_poll) {
|
---|
| 1163 | tcpip_try_callback((tcpip_callback_fn)netif_poll, netif);
|
---|
| 1164 | }
|
---|
| 1165 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
---|
| 1166 |
|
---|
| 1167 | return ERR_OK;
|
---|
| 1168 | }
|
---|
| 1169 |
|
---|
| 1170 | #if LWIP_HAVE_LOOPIF
|
---|
| 1171 | #if LWIP_IPV4
|
---|
| 1172 | static err_t
|
---|
| 1173 | netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr)
|
---|
| 1174 | {
|
---|
| 1175 | LWIP_UNUSED_ARG(addr);
|
---|
| 1176 | return netif_loop_output(netif, p);
|
---|
| 1177 | }
|
---|
| 1178 | #endif /* LWIP_IPV4 */
|
---|
| 1179 |
|
---|
| 1180 | #if LWIP_IPV6
|
---|
| 1181 | static err_t
|
---|
| 1182 | netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr)
|
---|
| 1183 | {
|
---|
| 1184 | LWIP_UNUSED_ARG(addr);
|
---|
| 1185 | return netif_loop_output(netif, p);
|
---|
| 1186 | }
|
---|
| 1187 | #endif /* LWIP_IPV6 */
|
---|
| 1188 | #endif /* LWIP_HAVE_LOOPIF */
|
---|
| 1189 |
|
---|
| 1190 |
|
---|
| 1191 | /**
|
---|
| 1192 | * Call netif_poll() in the main loop of your application. This is to prevent
|
---|
| 1193 | * reentering non-reentrant functions like tcp_input(). Packets passed to
|
---|
| 1194 | * netif_loop_output() are put on a list that is passed to netif->input() by
|
---|
| 1195 | * netif_poll().
|
---|
| 1196 | */
|
---|
| 1197 | void
|
---|
| 1198 | netif_poll(struct netif *netif)
|
---|
| 1199 | {
|
---|
| 1200 | /* If we have a loopif, SNMP counters are adjusted for it,
|
---|
| 1201 | * if not they are adjusted for 'netif'. */
|
---|
| 1202 | #if MIB2_STATS
|
---|
| 1203 | #if LWIP_HAVE_LOOPIF
|
---|
| 1204 | struct netif *stats_if = &loop_netif;
|
---|
| 1205 | #else /* LWIP_HAVE_LOOPIF */
|
---|
| 1206 | struct netif *stats_if = netif;
|
---|
| 1207 | #endif /* LWIP_HAVE_LOOPIF */
|
---|
| 1208 | #endif /* MIB2_STATS */
|
---|
| 1209 | SYS_ARCH_DECL_PROTECT(lev);
|
---|
| 1210 |
|
---|
| 1211 | LWIP_ASSERT("netif_poll: invalid netif", netif != NULL);
|
---|
| 1212 |
|
---|
| 1213 | /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
|
---|
| 1214 | SYS_ARCH_PROTECT(lev);
|
---|
| 1215 | while (netif->loop_first != NULL) {
|
---|
| 1216 | struct pbuf *in, *in_end;
|
---|
| 1217 | #if LWIP_LOOPBACK_MAX_PBUFS
|
---|
| 1218 | u8_t clen = 1;
|
---|
| 1219 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
---|
| 1220 |
|
---|
| 1221 | in = in_end = netif->loop_first;
|
---|
| 1222 | while (in_end->len != in_end->tot_len) {
|
---|
| 1223 | LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
|
---|
| 1224 | in_end = in_end->next;
|
---|
| 1225 | #if LWIP_LOOPBACK_MAX_PBUFS
|
---|
| 1226 | clen++;
|
---|
| 1227 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
---|
| 1228 | }
|
---|
| 1229 | #if LWIP_LOOPBACK_MAX_PBUFS
|
---|
| 1230 | /* adjust the number of pbufs on queue */
|
---|
| 1231 | LWIP_ASSERT("netif->loop_cnt_current underflow",
|
---|
| 1232 | ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
|
---|
| 1233 | netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current - clen);
|
---|
| 1234 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
---|
| 1235 |
|
---|
| 1236 | /* 'in_end' now points to the last pbuf from 'in' */
|
---|
| 1237 | if (in_end == netif->loop_last) {
|
---|
| 1238 | /* this was the last pbuf in the list */
|
---|
| 1239 | netif->loop_first = netif->loop_last = NULL;
|
---|
| 1240 | } else {
|
---|
| 1241 | /* pop the pbuf off the list */
|
---|
| 1242 | netif->loop_first = in_end->next;
|
---|
| 1243 | LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
|
---|
| 1244 | }
|
---|
| 1245 | /* De-queue the pbuf from its successors on the 'loop_' list. */
|
---|
| 1246 | in_end->next = NULL;
|
---|
| 1247 | SYS_ARCH_UNPROTECT(lev);
|
---|
| 1248 |
|
---|
| 1249 | in->if_idx = netif_get_index(netif);
|
---|
| 1250 |
|
---|
| 1251 | LINK_STATS_INC(link.recv);
|
---|
| 1252 | MIB2_STATS_NETIF_ADD(stats_if, ifinoctets, in->tot_len);
|
---|
| 1253 | MIB2_STATS_NETIF_INC(stats_if, ifinucastpkts);
|
---|
| 1254 | /* loopback packets are always IP packets! */
|
---|
| 1255 | if (ip_input(in, netif) != ERR_OK) {
|
---|
| 1256 | pbuf_free(in);
|
---|
| 1257 | }
|
---|
| 1258 | SYS_ARCH_PROTECT(lev);
|
---|
| 1259 | }
|
---|
| 1260 | SYS_ARCH_UNPROTECT(lev);
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 | #if !LWIP_NETIF_LOOPBACK_MULTITHREADING
|
---|
| 1264 | /**
|
---|
| 1265 | * Calls netif_poll() for every netif on the netif_list.
|
---|
| 1266 | */
|
---|
| 1267 | void
|
---|
| 1268 | netif_poll_all(void)
|
---|
| 1269 | {
|
---|
| 1270 | struct netif *netif;
|
---|
| 1271 | /* loop through netifs */
|
---|
| 1272 | NETIF_FOREACH(netif) {
|
---|
| 1273 | netif_poll(netif);
|
---|
| 1274 | }
|
---|
| 1275 | }
|
---|
| 1276 | #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
---|
| 1277 | #endif /* ENABLE_LOOPBACK */
|
---|
| 1278 |
|
---|
| 1279 | #if LWIP_NUM_NETIF_CLIENT_DATA > 0
|
---|
| 1280 | /**
|
---|
| 1281 | * @ingroup netif_cd
|
---|
| 1282 | * Allocate an index to store data in client_data member of struct netif.
|
---|
| 1283 | * Returned value is an index in mentioned array.
|
---|
| 1284 | * @see LWIP_NUM_NETIF_CLIENT_DATA
|
---|
| 1285 | */
|
---|
| 1286 | u8_t
|
---|
| 1287 | netif_alloc_client_data_id(void)
|
---|
| 1288 | {
|
---|
| 1289 | u8_t result = netif_client_id;
|
---|
| 1290 | netif_client_id++;
|
---|
| 1291 |
|
---|
| 1292 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1293 |
|
---|
| 1294 | #if LWIP_NUM_NETIF_CLIENT_DATA > 256
|
---|
| 1295 | #error LWIP_NUM_NETIF_CLIENT_DATA must be <= 256
|
---|
| 1296 | #endif
|
---|
| 1297 | LWIP_ASSERT("Increase LWIP_NUM_NETIF_CLIENT_DATA in lwipopts.h", result < LWIP_NUM_NETIF_CLIENT_DATA);
|
---|
| 1298 | return (u8_t)(result + LWIP_NETIF_CLIENT_DATA_INDEX_MAX);
|
---|
| 1299 | }
|
---|
| 1300 | #endif
|
---|
| 1301 |
|
---|
| 1302 | #if LWIP_IPV6
|
---|
| 1303 | /**
|
---|
| 1304 | * @ingroup netif_ip6
|
---|
| 1305 | * Change an IPv6 address of a network interface
|
---|
| 1306 | *
|
---|
| 1307 | * @param netif the network interface to change
|
---|
| 1308 | * @param addr_idx index of the IPv6 address
|
---|
| 1309 | * @param addr6 the new IPv6 address
|
---|
| 1310 | *
|
---|
| 1311 | * @note call netif_ip6_addr_set_state() to set the address valid/temptative
|
---|
| 1312 | */
|
---|
| 1313 | void
|
---|
| 1314 | netif_ip6_addr_set(struct netif *netif, s8_t addr_idx, const ip6_addr_t *addr6)
|
---|
| 1315 | {
|
---|
| 1316 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1317 |
|
---|
| 1318 | LWIP_ASSERT("netif_ip6_addr_set: invalid netif", netif != NULL);
|
---|
| 1319 | LWIP_ASSERT("netif_ip6_addr_set: invalid addr6", addr6 != NULL);
|
---|
| 1320 |
|
---|
| 1321 | netif_ip6_addr_set_parts(netif, addr_idx, addr6->addr[0], addr6->addr[1],
|
---|
| 1322 | addr6->addr[2], addr6->addr[3]);
|
---|
| 1323 | }
|
---|
| 1324 |
|
---|
| 1325 | /*
|
---|
| 1326 | * Change an IPv6 address of a network interface (internal version taking 4 * u32_t)
|
---|
| 1327 | *
|
---|
| 1328 | * @param netif the network interface to change
|
---|
| 1329 | * @param addr_idx index of the IPv6 address
|
---|
| 1330 | * @param i0 word0 of the new IPv6 address
|
---|
| 1331 | * @param i1 word1 of the new IPv6 address
|
---|
| 1332 | * @param i2 word2 of the new IPv6 address
|
---|
| 1333 | * @param i3 word3 of the new IPv6 address
|
---|
| 1334 | */
|
---|
| 1335 | void
|
---|
| 1336 | netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1, u32_t i2, u32_t i3)
|
---|
| 1337 | {
|
---|
| 1338 | ip_addr_t old_addr;
|
---|
| 1339 | ip_addr_t new_ipaddr;
|
---|
| 1340 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1341 | LWIP_ASSERT("netif != NULL", netif != NULL);
|
---|
| 1342 | LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES);
|
---|
| 1343 |
|
---|
| 1344 | ip6_addr_copy(*ip_2_ip6(&old_addr), *netif_ip6_addr(netif, addr_idx));
|
---|
| 1345 | IP_SET_TYPE_VAL(old_addr, IPADDR_TYPE_V6);
|
---|
| 1346 |
|
---|
| 1347 | /* address is actually being changed? */
|
---|
| 1348 | if ((ip_2_ip6(&old_addr)->addr[0] != i0) || (ip_2_ip6(&old_addr)->addr[1] != i1) ||
|
---|
| 1349 | (ip_2_ip6(&old_addr)->addr[2] != i2) || (ip_2_ip6(&old_addr)->addr[3] != i3)) {
|
---|
| 1350 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set: netif address being changed\n"));
|
---|
| 1351 |
|
---|
| 1352 | IP_ADDR6(&new_ipaddr, i0, i1, i2, i3);
|
---|
| 1353 | ip6_addr_assign_zone(ip_2_ip6(&new_ipaddr), IP6_UNICAST, netif);
|
---|
| 1354 |
|
---|
| 1355 | if (ip6_addr_isvalid(netif_ip6_addr_state(netif, addr_idx))) {
|
---|
| 1356 | netif_do_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr);
|
---|
| 1357 | }
|
---|
| 1358 | /* @todo: remove/readd mib2 ip6 entries? */
|
---|
| 1359 |
|
---|
| 1360 | ip_addr_copy(netif->ip6_addr[addr_idx], new_ipaddr);
|
---|
| 1361 |
|
---|
| 1362 | if (ip6_addr_isvalid(netif_ip6_addr_state(netif, addr_idx))) {
|
---|
| 1363 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6);
|
---|
| 1364 | NETIF_STATUS_CALLBACK(netif);
|
---|
| 1365 | }
|
---|
| 1366 |
|
---|
| 1367 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 1368 | {
|
---|
| 1369 | netif_ext_callback_args_t args;
|
---|
| 1370 | args.ipv6_set.addr_index = addr_idx;
|
---|
| 1371 | args.ipv6_set.old_address = &old_addr;
|
---|
| 1372 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_SET, &args);
|
---|
| 1373 | }
|
---|
| 1374 | #endif
|
---|
| 1375 | }
|
---|
| 1376 |
|
---|
| 1377 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n",
|
---|
| 1378 | addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)),
|
---|
| 1379 | netif_ip6_addr_state(netif, addr_idx)));
|
---|
| 1380 | }
|
---|
| 1381 |
|
---|
| 1382 | /**
|
---|
| 1383 | * @ingroup netif_ip6
|
---|
| 1384 | * Change the state of an IPv6 address of a network interface
|
---|
| 1385 | * (INVALID, TEMPTATIVE, PREFERRED, DEPRECATED, where TEMPTATIVE
|
---|
| 1386 | * includes the number of checks done, see ip6_addr.h)
|
---|
| 1387 | *
|
---|
| 1388 | * @param netif the network interface to change
|
---|
| 1389 | * @param addr_idx index of the IPv6 address
|
---|
| 1390 | * @param state the new IPv6 address state
|
---|
| 1391 | */
|
---|
| 1392 | void
|
---|
| 1393 | netif_ip6_addr_set_state(struct netif *netif, s8_t addr_idx, u8_t state)
|
---|
| 1394 | {
|
---|
| 1395 | u8_t old_state;
|
---|
| 1396 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1397 | LWIP_ASSERT("netif != NULL", netif != NULL);
|
---|
| 1398 | LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES);
|
---|
| 1399 |
|
---|
| 1400 | old_state = netif_ip6_addr_state(netif, addr_idx);
|
---|
| 1401 | /* state is actually being changed? */
|
---|
| 1402 | if (old_state != state) {
|
---|
| 1403 | u8_t old_valid = old_state & IP6_ADDR_VALID;
|
---|
| 1404 | u8_t new_valid = state & IP6_ADDR_VALID;
|
---|
| 1405 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set_state: netif address state being changed\n"));
|
---|
| 1406 |
|
---|
| 1407 | #if LWIP_IPV6_MLD
|
---|
| 1408 | /* Reevaluate solicited-node multicast group membership. */
|
---|
| 1409 | if (netif->flags & NETIF_FLAG_MLD6) {
|
---|
| 1410 | nd6_adjust_mld_membership(netif, addr_idx, state);
|
---|
| 1411 | }
|
---|
| 1412 | #endif /* LWIP_IPV6_MLD */
|
---|
| 1413 |
|
---|
| 1414 | if (old_valid && !new_valid) {
|
---|
| 1415 | /* address about to be removed by setting invalid */
|
---|
| 1416 | netif_do_ip_addr_changed(netif_ip_addr6(netif, addr_idx), NULL);
|
---|
| 1417 | /* @todo: remove mib2 ip6 entries? */
|
---|
| 1418 | }
|
---|
| 1419 | netif->ip6_addr_state[addr_idx] = state;
|
---|
| 1420 |
|
---|
| 1421 | if (!old_valid && new_valid) {
|
---|
| 1422 | /* address added by setting valid */
|
---|
| 1423 | /* This is a good moment to check that the address is properly zoned. */
|
---|
| 1424 | IP6_ADDR_ZONECHECK_NETIF(netif_ip6_addr(netif, addr_idx), netif);
|
---|
| 1425 | /* @todo: add mib2 ip6 entries? */
|
---|
| 1426 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6);
|
---|
| 1427 | }
|
---|
| 1428 | if ((old_state & ~IP6_ADDR_TENTATIVE_COUNT_MASK) !=
|
---|
| 1429 | (state & ~IP6_ADDR_TENTATIVE_COUNT_MASK)) {
|
---|
| 1430 | /* address state has changed -> call the callback function */
|
---|
| 1431 | NETIF_STATUS_CALLBACK(netif);
|
---|
| 1432 | }
|
---|
| 1433 |
|
---|
| 1434 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 1435 | {
|
---|
| 1436 | netif_ext_callback_args_t args;
|
---|
| 1437 | args.ipv6_addr_state_changed.addr_index = addr_idx;
|
---|
| 1438 | args.ipv6_addr_state_changed.old_state = old_state;
|
---|
| 1439 | args.ipv6_addr_state_changed.address = netif_ip_addr6(netif, addr_idx);
|
---|
| 1440 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_ADDR_STATE_CHANGED, &args);
|
---|
| 1441 | }
|
---|
| 1442 | #endif
|
---|
| 1443 | }
|
---|
| 1444 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n",
|
---|
| 1445 | addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)),
|
---|
| 1446 | netif_ip6_addr_state(netif, addr_idx)));
|
---|
| 1447 | }
|
---|
| 1448 |
|
---|
| 1449 | /**
|
---|
| 1450 | * Checks if a specific local address is present on the netif and returns its
|
---|
| 1451 | * index. Depending on its state, it may or may not be assigned to the
|
---|
| 1452 | * interface (as per RFC terminology).
|
---|
| 1453 | *
|
---|
| 1454 | * The given address may or may not be zoned (i.e., have a zone index other
|
---|
| 1455 | * than IP6_NO_ZONE). If the address is zoned, it must have the correct zone
|
---|
| 1456 | * for the given netif, or no match will be found.
|
---|
| 1457 | *
|
---|
| 1458 | * @param netif the netif to check
|
---|
| 1459 | * @param ip6addr the IPv6 address to find
|
---|
| 1460 | * @return >= 0: address found, this is its index
|
---|
| 1461 | * -1: address not found on this netif
|
---|
| 1462 | */
|
---|
| 1463 | s8_t
|
---|
| 1464 | netif_get_ip6_addr_match(struct netif *netif, const ip6_addr_t *ip6addr)
|
---|
| 1465 | {
|
---|
| 1466 | s8_t i;
|
---|
| 1467 |
|
---|
| 1468 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1469 |
|
---|
| 1470 | LWIP_ASSERT("netif_get_ip6_addr_match: invalid netif", netif != NULL);
|
---|
| 1471 | LWIP_ASSERT("netif_get_ip6_addr_match: invalid ip6addr", ip6addr != NULL);
|
---|
| 1472 |
|
---|
| 1473 | #if LWIP_IPV6_SCOPES
|
---|
| 1474 | if (ip6_addr_has_zone(ip6addr) && !ip6_addr_test_zone(ip6addr, netif)) {
|
---|
| 1475 | return -1; /* wrong zone, no match */
|
---|
| 1476 | }
|
---|
| 1477 | #endif /* LWIP_IPV6_SCOPES */
|
---|
| 1478 |
|
---|
| 1479 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
|
---|
| 1480 | if (!ip6_addr_isinvalid(netif_ip6_addr_state(netif, i)) &&
|
---|
| 1481 | ip6_addr_cmp_zoneless(netif_ip6_addr(netif, i), ip6addr)) {
|
---|
| 1482 | return i;
|
---|
| 1483 | }
|
---|
| 1484 | }
|
---|
| 1485 | return -1;
|
---|
| 1486 | }
|
---|
| 1487 |
|
---|
| 1488 | /**
|
---|
| 1489 | * @ingroup netif_ip6
|
---|
| 1490 | * Create a link-local IPv6 address on a netif (stored in slot 0)
|
---|
| 1491 | *
|
---|
| 1492 | * @param netif the netif to create the address on
|
---|
| 1493 | * @param from_mac_48bit if != 0, assume hwadr is a 48-bit MAC address (std conversion)
|
---|
| 1494 | * if == 0, use hwaddr directly as interface ID
|
---|
| 1495 | */
|
---|
| 1496 | void
|
---|
| 1497 | netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit)
|
---|
| 1498 | {
|
---|
| 1499 | u8_t i, addr_index;
|
---|
| 1500 |
|
---|
| 1501 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1502 |
|
---|
| 1503 | LWIP_ASSERT("netif_create_ip6_linklocal_address: invalid netif", netif != NULL);
|
---|
| 1504 |
|
---|
| 1505 | /* Link-local prefix. */
|
---|
| 1506 | ip_2_ip6(&netif->ip6_addr[0])->addr[0] = PP_HTONL(0xfe800000ul);
|
---|
| 1507 | ip_2_ip6(&netif->ip6_addr[0])->addr[1] = 0;
|
---|
| 1508 |
|
---|
| 1509 | /* Generate interface ID. */
|
---|
| 1510 | if (from_mac_48bit) {
|
---|
| 1511 | /* Assume hwaddr is a 48-bit IEEE 802 MAC. Convert to EUI-64 address. Complement Group bit. */
|
---|
| 1512 | ip_2_ip6(&netif->ip6_addr[0])->addr[2] = lwip_htonl((((u32_t)(netif->hwaddr[0] ^ 0x02)) << 24) |
|
---|
| 1513 | ((u32_t)(netif->hwaddr[1]) << 16) |
|
---|
| 1514 | ((u32_t)(netif->hwaddr[2]) << 8) |
|
---|
| 1515 | (0xff));
|
---|
| 1516 | ip_2_ip6(&netif->ip6_addr[0])->addr[3] = lwip_htonl((u32_t)(0xfeul << 24) |
|
---|
| 1517 | ((u32_t)(netif->hwaddr[3]) << 16) |
|
---|
| 1518 | ((u32_t)(netif->hwaddr[4]) << 8) |
|
---|
| 1519 | (netif->hwaddr[5]));
|
---|
| 1520 | } else {
|
---|
| 1521 | /* Use hwaddr directly as interface ID. */
|
---|
| 1522 | ip_2_ip6(&netif->ip6_addr[0])->addr[2] = 0;
|
---|
| 1523 | ip_2_ip6(&netif->ip6_addr[0])->addr[3] = 0;
|
---|
| 1524 |
|
---|
| 1525 | addr_index = 3;
|
---|
| 1526 | for (i = 0; (i < 8) && (i < netif->hwaddr_len); i++) {
|
---|
| 1527 | if (i == 4) {
|
---|
| 1528 | addr_index--;
|
---|
| 1529 | }
|
---|
| 1530 | ip_2_ip6(&netif->ip6_addr[0])->addr[addr_index] |= lwip_htonl(((u32_t)(netif->hwaddr[netif->hwaddr_len - i - 1])) << (8 * (i & 0x03)));
|
---|
| 1531 | }
|
---|
| 1532 | }
|
---|
| 1533 |
|
---|
| 1534 | /* Set a link-local zone. Even though the zone is implied by the owning
|
---|
| 1535 | * netif, setting the zone anyway has two important conceptual advantages:
|
---|
| 1536 | * 1) it avoids the need for a ton of exceptions in internal code, allowing
|
---|
| 1537 | * e.g. ip6_addr_cmp() to be used on local addresses;
|
---|
| 1538 | * 2) the properly zoned address is visible externally, e.g. when any outside
|
---|
| 1539 | * code enumerates available addresses or uses one to bind a socket.
|
---|
| 1540 | * Any external code unaware of address scoping is likely to just ignore the
|
---|
| 1541 | * zone field, so this should not create any compatibility problems. */
|
---|
| 1542 | ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[0]), IP6_UNICAST, netif);
|
---|
| 1543 |
|
---|
| 1544 | /* Set address state. */
|
---|
| 1545 | #if LWIP_IPV6_DUP_DETECT_ATTEMPTS
|
---|
| 1546 | /* Will perform duplicate address detection (DAD). */
|
---|
| 1547 | netif_ip6_addr_set_state(netif, 0, IP6_ADDR_TENTATIVE);
|
---|
| 1548 | #else
|
---|
| 1549 | /* Consider address valid. */
|
---|
| 1550 | netif_ip6_addr_set_state(netif, 0, IP6_ADDR_PREFERRED);
|
---|
| 1551 | #endif /* LWIP_IPV6_AUTOCONFIG */
|
---|
| 1552 | }
|
---|
| 1553 |
|
---|
| 1554 | /**
|
---|
| 1555 | * @ingroup netif_ip6
|
---|
| 1556 | * This function allows for the easy addition of a new IPv6 address to an interface.
|
---|
| 1557 | * It takes care of finding an empty slot and then sets the address tentative
|
---|
| 1558 | * (to make sure that all the subsequent processing happens).
|
---|
| 1559 | *
|
---|
| 1560 | * @param netif netif to add the address on
|
---|
| 1561 | * @param ip6addr address to add
|
---|
| 1562 | * @param chosen_idx if != NULL, the chosen IPv6 address index will be stored here
|
---|
| 1563 | */
|
---|
| 1564 | err_t
|
---|
| 1565 | netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t *chosen_idx)
|
---|
| 1566 | {
|
---|
| 1567 | s8_t i;
|
---|
| 1568 |
|
---|
| 1569 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1570 |
|
---|
| 1571 | LWIP_ASSERT("netif_add_ip6_address: invalid netif", netif != NULL);
|
---|
| 1572 | LWIP_ASSERT("netif_add_ip6_address: invalid ip6addr", ip6addr != NULL);
|
---|
| 1573 |
|
---|
| 1574 | i = netif_get_ip6_addr_match(netif, ip6addr);
|
---|
| 1575 | if (i >= 0) {
|
---|
| 1576 | /* Address already added */
|
---|
| 1577 | if (chosen_idx != NULL) {
|
---|
| 1578 | *chosen_idx = i;
|
---|
| 1579 | }
|
---|
| 1580 | return ERR_OK;
|
---|
| 1581 | }
|
---|
| 1582 |
|
---|
| 1583 | /* Find a free slot. The first one is reserved for link-local addresses. */
|
---|
| 1584 | for (i = ip6_addr_islinklocal(ip6addr) ? 0 : 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
|
---|
| 1585 | if (ip6_addr_isinvalid(netif_ip6_addr_state(netif, i))) {
|
---|
| 1586 | ip_addr_copy_from_ip6(netif->ip6_addr[i], *ip6addr);
|
---|
| 1587 | ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[i]), IP6_UNICAST, netif);
|
---|
| 1588 | netif_ip6_addr_set_state(netif, i, IP6_ADDR_TENTATIVE);
|
---|
| 1589 | if (chosen_idx != NULL) {
|
---|
| 1590 | *chosen_idx = i;
|
---|
| 1591 | }
|
---|
| 1592 | return ERR_OK;
|
---|
| 1593 | }
|
---|
| 1594 | }
|
---|
| 1595 |
|
---|
| 1596 | if (chosen_idx != NULL) {
|
---|
| 1597 | *chosen_idx = -1;
|
---|
| 1598 | }
|
---|
| 1599 | return ERR_VAL;
|
---|
| 1600 | }
|
---|
| 1601 |
|
---|
| 1602 | /** Dummy IPv6 output function for netifs not supporting IPv6
|
---|
| 1603 | */
|
---|
| 1604 | static err_t
|
---|
| 1605 | netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr)
|
---|
| 1606 | {
|
---|
| 1607 | LWIP_UNUSED_ARG(netif);
|
---|
| 1608 | LWIP_UNUSED_ARG(p);
|
---|
| 1609 | LWIP_UNUSED_ARG(ipaddr);
|
---|
| 1610 |
|
---|
| 1611 | return ERR_IF;
|
---|
| 1612 | }
|
---|
| 1613 | #endif /* LWIP_IPV6 */
|
---|
| 1614 |
|
---|
| 1615 | #if LWIP_IPV4
|
---|
| 1616 | /** Dummy IPv4 output function for netifs not supporting IPv4
|
---|
| 1617 | */
|
---|
| 1618 | static err_t
|
---|
| 1619 | netif_null_output_ip4(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr)
|
---|
| 1620 | {
|
---|
| 1621 | LWIP_UNUSED_ARG(netif);
|
---|
| 1622 | LWIP_UNUSED_ARG(p);
|
---|
| 1623 | LWIP_UNUSED_ARG(ipaddr);
|
---|
| 1624 |
|
---|
| 1625 | return ERR_IF;
|
---|
| 1626 | }
|
---|
| 1627 | #endif /* LWIP_IPV4 */
|
---|
| 1628 |
|
---|
| 1629 | /**
|
---|
| 1630 | * @ingroup netif
|
---|
| 1631 | * Return the interface index for the netif with name
|
---|
| 1632 | * or NETIF_NO_INDEX if not found/on error
|
---|
| 1633 | *
|
---|
| 1634 | * @param name the name of the netif
|
---|
| 1635 | */
|
---|
| 1636 | u8_t
|
---|
| 1637 | netif_name_to_index(const char *name)
|
---|
| 1638 | {
|
---|
| 1639 | struct netif *netif = netif_find(name);
|
---|
| 1640 | if (netif != NULL) {
|
---|
| 1641 | return netif_get_index(netif);
|
---|
| 1642 | }
|
---|
| 1643 | /* No name found, return invalid index */
|
---|
| 1644 | return NETIF_NO_INDEX;
|
---|
| 1645 | }
|
---|
| 1646 |
|
---|
| 1647 | /**
|
---|
| 1648 | * @ingroup netif
|
---|
| 1649 | * Return the interface name for the netif matching index
|
---|
| 1650 | * or NULL if not found/on error
|
---|
| 1651 | *
|
---|
| 1652 | * @param idx the interface index of the netif
|
---|
| 1653 | * @param name char buffer of at least NETIF_NAMESIZE bytes
|
---|
| 1654 | */
|
---|
| 1655 | char *
|
---|
| 1656 | netif_index_to_name(u8_t idx, char *name)
|
---|
| 1657 | {
|
---|
| 1658 | struct netif *netif = netif_get_by_index(idx);
|
---|
| 1659 |
|
---|
| 1660 | if (netif != NULL) {
|
---|
| 1661 | name[0] = netif->name[0];
|
---|
| 1662 | name[1] = netif->name[1];
|
---|
| 1663 | lwip_itoa(&name[2], NETIF_NAMESIZE - 2, netif_index_to_num(idx));
|
---|
| 1664 | return name;
|
---|
| 1665 | }
|
---|
| 1666 | return NULL;
|
---|
| 1667 | }
|
---|
| 1668 |
|
---|
| 1669 | /**
|
---|
| 1670 | * @ingroup netif
|
---|
| 1671 | * Return the interface for the netif index
|
---|
| 1672 | *
|
---|
| 1673 | * @param idx index of netif to find
|
---|
| 1674 | */
|
---|
| 1675 | struct netif *
|
---|
| 1676 | netif_get_by_index(u8_t idx)
|
---|
| 1677 | {
|
---|
| 1678 | struct netif *netif;
|
---|
| 1679 |
|
---|
| 1680 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1681 |
|
---|
| 1682 | if (idx != NETIF_NO_INDEX) {
|
---|
| 1683 | NETIF_FOREACH(netif) {
|
---|
| 1684 | if (idx == netif_get_index(netif)) {
|
---|
| 1685 | return netif; /* found! */
|
---|
| 1686 | }
|
---|
| 1687 | }
|
---|
| 1688 | }
|
---|
| 1689 |
|
---|
| 1690 | return NULL;
|
---|
| 1691 | }
|
---|
| 1692 |
|
---|
| 1693 | /**
|
---|
| 1694 | * @ingroup netif
|
---|
| 1695 | * Find a network interface by searching for its name
|
---|
| 1696 | *
|
---|
| 1697 | * @param name the name of the netif (like netif->name) plus concatenated number
|
---|
| 1698 | * in ascii representation (e.g. 'en0')
|
---|
| 1699 | */
|
---|
| 1700 | struct netif *
|
---|
| 1701 | netif_find(const char *name)
|
---|
| 1702 | {
|
---|
| 1703 | struct netif *netif;
|
---|
| 1704 | u8_t num;
|
---|
| 1705 |
|
---|
| 1706 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1707 |
|
---|
| 1708 | if (name == NULL) {
|
---|
| 1709 | return NULL;
|
---|
| 1710 | }
|
---|
| 1711 |
|
---|
| 1712 | num = (u8_t)atoi(&name[2]);
|
---|
| 1713 |
|
---|
| 1714 | NETIF_FOREACH(netif) {
|
---|
| 1715 | if (num == netif->num &&
|
---|
| 1716 | name[0] == netif->name[0] &&
|
---|
| 1717 | name[1] == netif->name[1]) {
|
---|
| 1718 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
|
---|
| 1719 | return netif;
|
---|
| 1720 | }
|
---|
| 1721 | }
|
---|
| 1722 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
|
---|
| 1723 | return NULL;
|
---|
| 1724 | }
|
---|
| 1725 |
|
---|
| 1726 | #if LWIP_NETIF_EXT_STATUS_CALLBACK
|
---|
| 1727 | /**
|
---|
| 1728 | * @ingroup netif
|
---|
| 1729 | * Add extended netif events listener
|
---|
| 1730 | * @param callback pointer to listener structure
|
---|
| 1731 | * @param fn callback function
|
---|
| 1732 | */
|
---|
| 1733 | void
|
---|
| 1734 | netif_add_ext_callback(netif_ext_callback_t *callback, netif_ext_callback_fn fn)
|
---|
| 1735 | {
|
---|
| 1736 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1737 | LWIP_ASSERT("callback must be != NULL", callback != NULL);
|
---|
| 1738 | LWIP_ASSERT("fn must be != NULL", fn != NULL);
|
---|
| 1739 |
|
---|
| 1740 | callback->callback_fn = fn;
|
---|
| 1741 | callback->next = ext_callback;
|
---|
| 1742 | ext_callback = callback;
|
---|
| 1743 | }
|
---|
| 1744 |
|
---|
| 1745 | /**
|
---|
| 1746 | * @ingroup netif
|
---|
| 1747 | * Remove extended netif events listener
|
---|
| 1748 | * @param callback pointer to listener structure
|
---|
| 1749 | */
|
---|
| 1750 | void
|
---|
| 1751 | netif_remove_ext_callback(netif_ext_callback_t* callback)
|
---|
| 1752 | {
|
---|
| 1753 | netif_ext_callback_t *last, *iter;
|
---|
| 1754 |
|
---|
| 1755 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 1756 | LWIP_ASSERT("callback must be != NULL", callback != NULL);
|
---|
| 1757 |
|
---|
| 1758 | if (ext_callback == NULL) {
|
---|
| 1759 | return;
|
---|
| 1760 | }
|
---|
| 1761 |
|
---|
| 1762 | if (callback == ext_callback) {
|
---|
| 1763 | ext_callback = ext_callback->next;
|
---|
| 1764 | } else {
|
---|
| 1765 | last = ext_callback;
|
---|
| 1766 | for (iter = ext_callback->next; iter != NULL; last = iter, iter = iter->next) {
|
---|
| 1767 | if (iter == callback) {
|
---|
| 1768 | LWIP_ASSERT("last != NULL", last != NULL);
|
---|
| 1769 | last->next = callback->next;
|
---|
| 1770 | callback->next = NULL;
|
---|
| 1771 | return;
|
---|
| 1772 | }
|
---|
| 1773 | }
|
---|
| 1774 | }
|
---|
| 1775 | }
|
---|
| 1776 |
|
---|
| 1777 | /**
|
---|
| 1778 | * Invoke extended netif status event
|
---|
| 1779 | * @param netif netif that is affected by change
|
---|
| 1780 | * @param reason change reason
|
---|
| 1781 | * @param args depends on reason, see reason description
|
---|
| 1782 | */
|
---|
| 1783 | void
|
---|
| 1784 | netif_invoke_ext_callback(struct netif *netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t *args)
|
---|
| 1785 | {
|
---|
| 1786 | netif_ext_callback_t *callback = ext_callback;
|
---|
| 1787 |
|
---|
| 1788 | LWIP_ASSERT("netif must be != NULL", netif != NULL);
|
---|
| 1789 |
|
---|
| 1790 | while (callback != NULL) {
|
---|
| 1791 | callback->callback_fn(netif, reason, args);
|
---|
| 1792 | callback = callback->next;
|
---|
| 1793 | }
|
---|
| 1794 | }
|
---|
| 1795 | #endif /* LWIP_NETIF_EXT_STATUS_CALLBACK */
|
---|