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Diffstat (limited to 'lwip/src/include/lwip/netif.h')
| -rw-r--r-- | lwip/src/include/lwip/netif.h | 669 |
1 files changed, 669 insertions, 0 deletions
diff --git a/lwip/src/include/lwip/netif.h b/lwip/src/include/lwip/netif.h new file mode 100644 index 0000000..911196a --- /dev/null +++ b/lwip/src/include/lwip/netif.h @@ -0,0 +1,669 @@ +/** + * @file + * netif API (to be used from TCPIP thread) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + */ +#ifndef LWIP_HDR_NETIF_H +#define LWIP_HDR_NETIF_H + +#include "lwip/opt.h" + +#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF) + +#include "lwip/err.h" + +#include "lwip/ip_addr.h" + +#include "lwip/def.h" +#include "lwip/pbuf.h" +#include "lwip/stats.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Throughout this file, IP addresses are expected to be in + * the same byte order as in IP_PCB. */ + +/** Must be the maximum of all used hardware address lengths + across all types of interfaces in use. + This does not have to be changed, normally. */ +#ifndef NETIF_MAX_HWADDR_LEN +#define NETIF_MAX_HWADDR_LEN 6U +#endif + +/** The size of a fully constructed netif name which the + * netif can be identified by in APIs. Composed of + * 2 chars, 3 (max) digits, and 1 \0 + */ +#define NETIF_NAMESIZE 6 + +/** + * @defgroup netif_flags Flags + * @ingroup netif + * @{ + */ + +/** Whether the network interface is 'up'. This is + * a software flag used to control whether this network + * interface is enabled and processes traffic. + * It must be set by the startup code before this netif can be used + * (also for dhcp/autoip). + */ +#define NETIF_FLAG_UP 0x01U +/** If set, the netif has broadcast capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_BROADCAST 0x02U +/** If set, the interface has an active link + * (set by the network interface driver). + * Either set by the netif driver in its init function (if the link + * is up at that time) or at a later point once the link comes up + * (if link detection is supported by the hardware). */ +#define NETIF_FLAG_LINK_UP 0x04U +/** If set, the netif is an ethernet device using ARP. + * Set by the netif driver in its init function. + * Used to check input packet types and use of DHCP. */ +#define NETIF_FLAG_ETHARP 0x08U +/** If set, the netif is an ethernet device. It might not use + * ARP or TCP/IP if it is used for PPPoE only. + */ +#define NETIF_FLAG_ETHERNET 0x10U +/** If set, the netif has IGMP capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_IGMP 0x20U +/** If set, the netif has MLD6 capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_MLD6 0x40U + +/** + * @} + */ + +enum lwip_internal_netif_client_data_index +{ +#if LWIP_IPV4 +#if LWIP_DHCP + LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, +#endif +#if LWIP_AUTOIP + LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP, +#endif +#if LWIP_IGMP + LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, +#endif +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 +#if LWIP_IPV6_DHCP6 + LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, +#endif +#if LWIP_IPV6_MLD + LWIP_NETIF_CLIENT_DATA_INDEX_MLD6, +#endif +#endif /* LWIP_IPV6 */ + LWIP_NETIF_CLIENT_DATA_INDEX_MAX +}; + +#if LWIP_CHECKSUM_CTRL_PER_NETIF +#define NETIF_CHECKSUM_GEN_IP 0x0001 +#define NETIF_CHECKSUM_GEN_UDP 0x0002 +#define NETIF_CHECKSUM_GEN_TCP 0x0004 +#define NETIF_CHECKSUM_GEN_ICMP 0x0008 +#define NETIF_CHECKSUM_GEN_ICMP6 0x0010 +#define NETIF_CHECKSUM_CHECK_IP 0x0100 +#define NETIF_CHECKSUM_CHECK_UDP 0x0200 +#define NETIF_CHECKSUM_CHECK_TCP 0x0400 +#define NETIF_CHECKSUM_CHECK_ICMP 0x0800 +#define NETIF_CHECKSUM_CHECK_ICMP6 0x1000 +#define NETIF_CHECKSUM_ENABLE_ALL 0xFFFF +#define NETIF_CHECKSUM_DISABLE_ALL 0x0000 +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ + +struct netif; + +/** MAC Filter Actions, these are passed to a netif's igmp_mac_filter or + * mld_mac_filter callback function. */ +enum netif_mac_filter_action { + /** Delete a filter entry */ + NETIF_DEL_MAC_FILTER = 0, + /** Add a filter entry */ + NETIF_ADD_MAC_FILTER = 1 +}; + +/** Function prototype for netif init functions. Set up flags and output/linkoutput + * callback functions in this function. + * + * @param netif The netif to initialize + */ +typedef err_t (*netif_init_fn)(struct netif *netif); +/** Function prototype for netif->input functions. This function is saved as 'input' + * callback function in the netif struct. Call it when a packet has been received. + * + * @param p The received packet, copied into a pbuf + * @param inp The netif which received the packet + * @return ERR_OK if the packet was handled + * != ERR_OK is the packet was NOT handled, in this case, the caller has + * to free the pbuf + */ +typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp); + +#if LWIP_IPV4 +/** Function prototype for netif->output functions. Called by lwIP when a packet + * shall be sent. For ethernet netif, set this to 'etharp_output' and set + * 'linkoutput'. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (p->payload points to IP header) + * @param ipaddr The IP address to which the packet shall be sent + */ +typedef err_t (*netif_output_fn)(struct netif *netif, struct pbuf *p, + const ip4_addr_t *ipaddr); +#endif /* LWIP_IPV4*/ + +#if LWIP_IPV6 +/** Function prototype for netif->output_ip6 functions. Called by lwIP when a packet + * shall be sent. For ethernet netif, set this to 'ethip6_output' and set + * 'linkoutput'. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (p->payload points to IP header) + * @param ipaddr The IPv6 address to which the packet shall be sent + */ +typedef err_t (*netif_output_ip6_fn)(struct netif *netif, struct pbuf *p, + const ip6_addr_t *ipaddr); +#endif /* LWIP_IPV6 */ + +/** Function prototype for netif->linkoutput functions. Only used for ethernet + * netifs. This function is called by ARP when a packet shall be sent. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (raw ethernet packet) + */ +typedef err_t (*netif_linkoutput_fn)(struct netif *netif, struct pbuf *p); +/** Function prototype for netif status- or link-callback functions. */ +typedef void (*netif_status_callback_fn)(struct netif *netif); +#if LWIP_IPV4 && LWIP_IGMP +/** Function prototype for netif igmp_mac_filter functions */ +typedef err_t (*netif_igmp_mac_filter_fn)(struct netif *netif, + const ip4_addr_t *group, enum netif_mac_filter_action action); +#endif /* LWIP_IPV4 && LWIP_IGMP */ +#if LWIP_IPV6 && LWIP_IPV6_MLD +/** Function prototype for netif mld_mac_filter functions */ +typedef err_t (*netif_mld_mac_filter_fn)(struct netif *netif, + const ip6_addr_t *group, enum netif_mac_filter_action action); +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ + +#if LWIP_DHCP || LWIP_AUTOIP || LWIP_IGMP || LWIP_IPV6_MLD || LWIP_IPV6_DHCP6 || (LWIP_NUM_NETIF_CLIENT_DATA > 0) +#if LWIP_NUM_NETIF_CLIENT_DATA > 0 +u8_t netif_alloc_client_data_id(void); +#endif +/** @ingroup netif_cd + * Set client data. Obtain ID from netif_alloc_client_data_id(). + */ +#define netif_set_client_data(netif, id, data) netif_get_client_data(netif, id) = (data) +/** @ingroup netif_cd + * Get client data. Obtain ID from netif_alloc_client_data_id(). + */ +#define netif_get_client_data(netif, id) (netif)->client_data[(id)] +#endif + +#if (LWIP_IPV4 && LWIP_ARP && (ARP_TABLE_SIZE > 0x7f)) || (LWIP_IPV6 && (LWIP_ND6_NUM_DESTINATIONS > 0x7f)) +typedef u16_t netif_addr_idx_t; +#define NETIF_ADDR_IDX_MAX 0x7FFF +#else +typedef u8_t netif_addr_idx_t; +#define NETIF_ADDR_IDX_MAX 0x7F +#endif + +#if LWIP_NETIF_HWADDRHINT +#define LWIP_NETIF_USE_HINTS 1 +struct netif_hint { + netif_addr_idx_t addr_hint; +}; +#else /* LWIP_NETIF_HWADDRHINT */ +#define LWIP_NETIF_USE_HINTS 0 +#endif /* LWIP_NETIF_HWADDRHINT */ + +/** Generic data structure used for all lwIP network interfaces. + * The following fields should be filled in by the initialization + * function for the device driver: hwaddr_len, hwaddr[], mtu, flags */ +struct netif { +#if !LWIP_SINGLE_NETIF + /** pointer to next in linked list */ + struct netif *next; +#endif + +#if LWIP_IPV4 + /** IP address configuration in network byte order */ + ip_addr_t ip_addr; + ip_addr_t netmask; + ip_addr_t gw; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 + /** Array of IPv6 addresses for this netif. */ + ip_addr_t ip6_addr[LWIP_IPV6_NUM_ADDRESSES]; + /** The state of each IPv6 address (Tentative, Preferred, etc). + * @see ip6_addr.h */ + u8_t ip6_addr_state[LWIP_IPV6_NUM_ADDRESSES]; +#if LWIP_IPV6_ADDRESS_LIFETIMES + /** Remaining valid and preferred lifetime of each IPv6 address, in seconds. + * For valid lifetimes, the special value of IP6_ADDR_LIFE_STATIC (0) + * indicates the address is static and has no lifetimes. */ + u32_t ip6_addr_valid_life[LWIP_IPV6_NUM_ADDRESSES]; + u32_t ip6_addr_pref_life[LWIP_IPV6_NUM_ADDRESSES]; +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ +#endif /* LWIP_IPV6 */ + /** This function is called by the network device driver + * to pass a packet up the TCP/IP stack. */ + netif_input_fn input; +#if LWIP_IPV4 + /** This function is called by the IP module when it wants + * to send a packet on the interface. This function typically + * first resolves the hardware address, then sends the packet. + * For ethernet physical layer, this is usually etharp_output() */ + netif_output_fn output; +#endif /* LWIP_IPV4 */ + /** This function is called by ethernet_output() when it wants + * to send a packet on the interface. This function outputs + * the pbuf as-is on the link medium. */ + netif_linkoutput_fn linkoutput; +#if LWIP_IPV6 + /** This function is called by the IPv6 module when it wants + * to send a packet on the interface. This function typically + * first resolves the hardware address, then sends the packet. + * For ethernet physical layer, this is usually ethip6_output() */ + netif_output_ip6_fn output_ip6; +#endif /* LWIP_IPV6 */ +#if LWIP_NETIF_STATUS_CALLBACK + /** This function is called when the netif state is set to up or down + */ + netif_status_callback_fn status_callback; +#endif /* LWIP_NETIF_STATUS_CALLBACK */ +#if LWIP_NETIF_LINK_CALLBACK + /** This function is called when the netif link is set to up or down + */ + netif_status_callback_fn link_callback; +#endif /* LWIP_NETIF_LINK_CALLBACK */ +#if LWIP_NETIF_REMOVE_CALLBACK + /** This function is called when the netif has been removed */ + netif_status_callback_fn remove_callback; +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + /** This field can be set by the device driver and could point + * to state information for the device. */ + void *state; +#ifdef netif_get_client_data + void* client_data[LWIP_NETIF_CLIENT_DATA_INDEX_MAX + LWIP_NUM_NETIF_CLIENT_DATA]; +#endif +#if LWIP_NETIF_HOSTNAME + /* the hostname for this netif, NULL is a valid value */ + const char* hostname; +#endif /* LWIP_NETIF_HOSTNAME */ +#if LWIP_CHECKSUM_CTRL_PER_NETIF + u16_t chksum_flags; +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF*/ + /** maximum transfer unit (in bytes) */ + u16_t mtu; +#if LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES + /** maximum transfer unit (in bytes), updated by RA */ + u16_t mtu6; +#endif /* LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES */ + /** link level hardware address of this interface */ + u8_t hwaddr[NETIF_MAX_HWADDR_LEN]; + /** number of bytes used in hwaddr */ + u8_t hwaddr_len; + /** flags (@see @ref netif_flags) */ + u8_t flags; + /** descriptive abbreviation */ + char name[2]; + /** number of this interface. Used for @ref if_api and @ref netifapi_netif, + * as well as for IPv6 zones */ + u8_t num; +#if LWIP_IPV6_AUTOCONFIG + /** is this netif enabled for IPv6 autoconfiguration */ + u8_t ip6_autoconfig_enabled; +#endif /* LWIP_IPV6_AUTOCONFIG */ +#if LWIP_IPV6_SEND_ROUTER_SOLICIT + /** Number of Router Solicitation messages that remain to be sent. */ + u8_t rs_count; +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ +#if MIB2_STATS + /** link type (from "snmp_ifType" enum from snmp_mib2.h) */ + u8_t link_type; + /** (estimate) link speed */ + u32_t link_speed; + /** timestamp at last change made (up/down) */ + u32_t ts; + /** counters */ + struct stats_mib2_netif_ctrs mib2_counters; +#endif /* MIB2_STATS */ +#if LWIP_IPV4 && LWIP_IGMP + /** This function could be called to add or delete an entry in the multicast + filter table of the ethernet MAC.*/ + netif_igmp_mac_filter_fn igmp_mac_filter; +#endif /* LWIP_IPV4 && LWIP_IGMP */ +#if LWIP_IPV6 && LWIP_IPV6_MLD + /** This function could be called to add or delete an entry in the IPv6 multicast + filter table of the ethernet MAC. */ + netif_mld_mac_filter_fn mld_mac_filter; +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ +#if LWIP_NETIF_USE_HINTS + struct netif_hint *hints; +#endif /* LWIP_NETIF_USE_HINTS */ +#if ENABLE_LOOPBACK + /* List of packets to be queued for ourselves. */ + struct pbuf *loop_first; + struct pbuf *loop_last; +#if LWIP_LOOPBACK_MAX_PBUFS + u16_t loop_cnt_current; +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ +#endif /* ENABLE_LOOPBACK */ +}; + +#if LWIP_CHECKSUM_CTRL_PER_NETIF +#define NETIF_SET_CHECKSUM_CTRL(netif, chksumflags) do { \ + (netif)->chksum_flags = chksumflags; } while(0) +#define IF__NETIF_CHECKSUM_ENABLED(netif, chksumflag) if (((netif) == NULL) || (((netif)->chksum_flags & (chksumflag)) != 0)) +#else /* LWIP_CHECKSUM_CTRL_PER_NETIF */ +#define NETIF_SET_CHECKSUM_CTRL(netif, chksumflags) +#define IF__NETIF_CHECKSUM_ENABLED(netif, chksumflag) +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ + +#if LWIP_SINGLE_NETIF +#define NETIF_FOREACH(netif) if (((netif) = netif_default) != NULL) +#else /* LWIP_SINGLE_NETIF */ +/** The list of network interfaces. */ +extern struct netif *netif_list; +#define NETIF_FOREACH(netif) for ((netif) = netif_list; (netif) != NULL; (netif) = (netif)->next) +#endif /* LWIP_SINGLE_NETIF */ +/** The default network interface. */ +extern struct netif *netif_default; + +void netif_init(void); + +struct netif *netif_add_noaddr(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input); + +#if LWIP_IPV4 +struct netif *netif_add(struct netif *netif, + const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, + void *state, netif_init_fn init, netif_input_fn input); +void netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, + const ip4_addr_t *gw); +#else /* LWIP_IPV4 */ +struct netif *netif_add(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input); +#endif /* LWIP_IPV4 */ +void netif_remove(struct netif * netif); + +/* Returns a network interface given its name. The name is of the form + "et0", where the first two letters are the "name" field in the + netif structure, and the digit is in the num field in the same + structure. */ +struct netif *netif_find(const char *name); + +void netif_set_default(struct netif *netif); + +#if LWIP_IPV4 +void netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr); +void netif_set_netmask(struct netif *netif, const ip4_addr_t *netmask); +void netif_set_gw(struct netif *netif, const ip4_addr_t *gw); +/** @ingroup netif_ip4 */ +#define netif_ip4_addr(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->ip_addr))) +/** @ingroup netif_ip4 */ +#define netif_ip4_netmask(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->netmask))) +/** @ingroup netif_ip4 */ +#define netif_ip4_gw(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->gw))) +/** @ingroup netif_ip4 */ +#define netif_ip_addr4(netif) ((const ip_addr_t*)&((netif)->ip_addr)) +/** @ingroup netif_ip4 */ +#define netif_ip_netmask4(netif) ((const ip_addr_t*)&((netif)->netmask)) +/** @ingroup netif_ip4 */ +#define netif_ip_gw4(netif) ((const ip_addr_t*)&((netif)->gw)) +#endif /* LWIP_IPV4 */ + +#define netif_set_flags(netif, set_flags) do { (netif)->flags = (u8_t)((netif)->flags | (set_flags)); } while(0) +#define netif_clear_flags(netif, clr_flags) do { (netif)->flags = (u8_t)((netif)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0) +#define netif_is_flag_set(nefif, flag) (((netif)->flags & (flag)) != 0) + +void netif_set_up(struct netif *netif); +void netif_set_down(struct netif *netif); +/** @ingroup netif + * Ask if an interface is up + */ +#define netif_is_up(netif) (((netif)->flags & NETIF_FLAG_UP) ? (u8_t)1 : (u8_t)0) + +#if LWIP_NETIF_STATUS_CALLBACK +void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback); +#endif /* LWIP_NETIF_STATUS_CALLBACK */ +#if LWIP_NETIF_REMOVE_CALLBACK +void netif_set_remove_callback(struct netif *netif, netif_status_callback_fn remove_callback); +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + +void netif_set_link_up(struct netif *netif); +void netif_set_link_down(struct netif *netif); +/** Ask if a link is up */ +#define netif_is_link_up(netif) (((netif)->flags & NETIF_FLAG_LINK_UP) ? (u8_t)1 : (u8_t)0) + +#if LWIP_NETIF_LINK_CALLBACK +void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback); +#endif /* LWIP_NETIF_LINK_CALLBACK */ + +#if LWIP_NETIF_HOSTNAME +/** @ingroup netif */ +#define netif_set_hostname(netif, name) do { if((netif) != NULL) { (netif)->hostname = name; }}while(0) +/** @ingroup netif */ +#define netif_get_hostname(netif) (((netif) != NULL) ? ((netif)->hostname) : NULL) +#endif /* LWIP_NETIF_HOSTNAME */ + +#if LWIP_IGMP +/** @ingroup netif */ +#define netif_set_igmp_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->igmp_mac_filter = function; }}while(0) +#define netif_get_igmp_mac_filter(netif) (((netif) != NULL) ? ((netif)->igmp_mac_filter) : NULL) +#endif /* LWIP_IGMP */ + +#if LWIP_IPV6 && LWIP_IPV6_MLD +/** @ingroup netif */ +#define netif_set_mld_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->mld_mac_filter = function; }}while(0) +#define netif_get_mld_mac_filter(netif) (((netif) != NULL) ? ((netif)->mld_mac_filter) : NULL) +#define netif_mld_mac_filter(netif, addr, action) do { if((netif) && (netif)->mld_mac_filter) { (netif)->mld_mac_filter((netif), (addr), (action)); }}while(0) +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ + +#if ENABLE_LOOPBACK +err_t netif_loop_output(struct netif *netif, struct pbuf *p); +void netif_poll(struct netif *netif); +#if !LWIP_NETIF_LOOPBACK_MULTITHREADING +void netif_poll_all(void); +#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ +#endif /* ENABLE_LOOPBACK */ + +err_t netif_input(struct pbuf *p, struct netif *inp); + +#if LWIP_IPV6 +/** @ingroup netif_ip6 */ +#define netif_ip_addr6(netif, i) ((const ip_addr_t*)(&((netif)->ip6_addr[i]))) +/** @ingroup netif_ip6 */ +#define netif_ip6_addr(netif, i) ((const ip6_addr_t*)ip_2_ip6(&((netif)->ip6_addr[i]))) +void netif_ip6_addr_set(struct netif *netif, s8_t addr_idx, const ip6_addr_t *addr6); +void netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1, u32_t i2, u32_t i3); +#define netif_ip6_addr_state(netif, i) ((netif)->ip6_addr_state[i]) +void netif_ip6_addr_set_state(struct netif* netif, s8_t addr_idx, u8_t state); +s8_t netif_get_ip6_addr_match(struct netif *netif, const ip6_addr_t *ip6addr); +void netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit); +err_t netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t *chosen_idx); +#define netif_set_ip6_autoconfig_enabled(netif, action) do { if(netif) { (netif)->ip6_autoconfig_enabled = (action); }}while(0) +#if LWIP_IPV6_ADDRESS_LIFETIMES +#define netif_ip6_addr_valid_life(netif, i) \ + (((netif) != NULL) ? ((netif)->ip6_addr_valid_life[i]) : IP6_ADDR_LIFE_STATIC) +#define netif_ip6_addr_set_valid_life(netif, i, secs) \ + do { if (netif != NULL) { (netif)->ip6_addr_valid_life[i] = (secs); }} while (0) +#define netif_ip6_addr_pref_life(netif, i) \ + (((netif) != NULL) ? ((netif)->ip6_addr_pref_life[i]) : IP6_ADDR_LIFE_STATIC) +#define netif_ip6_addr_set_pref_life(netif, i, secs) \ + do { if (netif != NULL) { (netif)->ip6_addr_pref_life[i] = (secs); }} while (0) +#define netif_ip6_addr_isstatic(netif, i) \ + (netif_ip6_addr_valid_life((netif), (i)) == IP6_ADDR_LIFE_STATIC) +#else /* !LWIP_IPV6_ADDRESS_LIFETIMES */ +#define netif_ip6_addr_isstatic(netif, i) (1) /* all addresses are static */ +#endif /* !LWIP_IPV6_ADDRESS_LIFETIMES */ +#if LWIP_ND6_ALLOW_RA_UPDATES +#define netif_mtu6(netif) ((netif)->mtu6) +#else /* LWIP_ND6_ALLOW_RA_UPDATES */ +#define netif_mtu6(netif) ((netif)->mtu) +#endif /* LWIP_ND6_ALLOW_RA_UPDATES */ +#endif /* LWIP_IPV6 */ + +#if LWIP_NETIF_USE_HINTS +#define NETIF_SET_HINTS(netif, netifhint) (netif)->hints = (netifhint) +#define NETIF_RESET_HINTS(netif) (netif)->hints = NULL +#else /* LWIP_NETIF_USE_HINTS */ +#define NETIF_SET_HINTS(netif, netifhint) +#define NETIF_RESET_HINTS(netif) +#endif /* LWIP_NETIF_USE_HINTS */ + +u8_t netif_name_to_index(const char *name); +char * netif_index_to_name(u8_t idx, char *name); +struct netif* netif_get_by_index(u8_t idx); + +/* Interface indexes always start at 1 per RFC 3493, section 4, num starts at 0 (internal index is 0..254)*/ +#define netif_get_index(netif) ((u8_t)((netif)->num + 1)) +#define NETIF_NO_INDEX (0) + +/** + * @ingroup netif + * Extended netif status callback (NSC) reasons flags. + * May be extended in the future! + */ +typedef u16_t netif_nsc_reason_t; + +/* used for initialization only */ +#define LWIP_NSC_NONE 0x0000 +/** netif was added. arg: NULL. Called AFTER netif was added. */ +#define LWIP_NSC_NETIF_ADDED 0x0001 +/** netif was removed. arg: NULL. Called BEFORE netif is removed. */ +#define LWIP_NSC_NETIF_REMOVED 0x0002 +/** link changed */ +#define LWIP_NSC_LINK_CHANGED 0x0004 +/** netif administrative status changed.\n + * up is called AFTER netif is set up.\n + * down is called BEFORE the netif is actually set down. */ +#define LWIP_NSC_STATUS_CHANGED 0x0008 +/** IPv4 address has changed */ +#define LWIP_NSC_IPV4_ADDRESS_CHANGED 0x0010 +/** IPv4 gateway has changed */ +#define LWIP_NSC_IPV4_GATEWAY_CHANGED 0x0020 +/** IPv4 netmask has changed */ +#define LWIP_NSC_IPV4_NETMASK_CHANGED 0x0040 +/** called AFTER IPv4 address/gateway/netmask changes have been applied */ +#define LWIP_NSC_IPV4_SETTINGS_CHANGED 0x0080 +/** IPv6 address was added */ +#define LWIP_NSC_IPV6_SET 0x0100 +/** IPv6 address state has changed */ +#define LWIP_NSC_IPV6_ADDR_STATE_CHANGED 0x0200 + +/** @ingroup netif + * Argument supplied to netif_ext_callback_fn. + */ +typedef union +{ + /** Args to LWIP_NSC_LINK_CHANGED callback */ + struct link_changed_s + { + /** 1: up; 0: down */ + u8_t state; + } link_changed; + /** Args to LWIP_NSC_STATUS_CHANGED callback */ + struct status_changed_s + { + /** 1: up; 0: down */ + u8_t state; + } status_changed; + /** Args to LWIP_NSC_IPV4_ADDRESS_CHANGED|LWIP_NSC_IPV4_GATEWAY_CHANGED|LWIP_NSC_IPV4_NETMASK_CHANGED|LWIP_NSC_IPV4_SETTINGS_CHANGED callback */ + struct ipv4_changed_s + { + /** Old IPv4 address */ + const ip_addr_t* old_address; + const ip_addr_t* old_netmask; + const ip_addr_t* old_gw; + } ipv4_changed; + /** Args to LWIP_NSC_IPV6_SET callback */ + struct ipv6_set_s + { + /** Index of changed IPv6 address */ + s8_t addr_index; + /** Old IPv6 address */ + const ip_addr_t* old_address; + } ipv6_set; + /** Args to LWIP_NSC_IPV6_ADDR_STATE_CHANGED callback */ + struct ipv6_addr_state_changed_s + { + /** Index of affected IPv6 address */ + s8_t addr_index; + /** Old IPv6 address state */ + u8_t old_state; + /** Affected IPv6 address */ + const ip_addr_t* address; + } ipv6_addr_state_changed; +} netif_ext_callback_args_t; + +/** + * @ingroup netif + * Function used for extended netif status callbacks + * Note: When parsing reason argument, keep in mind that more reasons may be added in the future! + * @param netif netif that is affected by change + * @param reason change reason + * @param args depends on reason, see reason description + */ +typedef void (*netif_ext_callback_fn)(struct netif* netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t* args); + +#if LWIP_NETIF_EXT_STATUS_CALLBACK +struct netif_ext_callback; +typedef struct netif_ext_callback +{ + netif_ext_callback_fn callback_fn; + struct netif_ext_callback* next; +} netif_ext_callback_t; + +#define NETIF_DECLARE_EXT_CALLBACK(name) static netif_ext_callback_t name; +void netif_add_ext_callback(netif_ext_callback_t* callback, netif_ext_callback_fn fn); +void netif_remove_ext_callback(netif_ext_callback_t* callback); +void netif_invoke_ext_callback(struct netif* netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t* args); +#else +#define NETIF_DECLARE_EXT_CALLBACK(name) +#define netif_add_ext_callback(callback, fn) +#define netif_remove_ext_callback(callback) +#define netif_invoke_ext_callback(netif, reason, args) +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_H */ |