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https://github.com/lwip-tcpip/lwip.git
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Task #14314: Add interface name/index APIs
This commit adds the following sets of interface name/index APIs: Interface Identification APIs from RFC 3493: * lwip_if_nametoindex (COMPAT macro if_nametoindex) * lwip_if_indextoname (COMPAT macro if_indextoname) netifapi: * netifapi_netif_name_to_index * netifapi_netif_index_to_name netif: * netif_name_to_index * netif_index_to_name * netif_num_to_index * netif_index_to_num
This commit is contained in:
parent
9c80a66253
commit
1b20e664bf
@ -71,6 +71,7 @@ CORE6FILES=$(LWIPDIR)/core/ipv6/dhcp6.c \
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APIFILES=$(LWIPDIR)/api/api_lib.c \
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APIFILES=$(LWIPDIR)/api/api_lib.c \
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$(LWIPDIR)/api/api_msg.c \
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$(LWIPDIR)/api/api_msg.c \
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$(LWIPDIR)/api/err.c \
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$(LWIPDIR)/api/err.c \
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$(LWIPDIR)/api/if.c \
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$(LWIPDIR)/api/netbuf.c \
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$(LWIPDIR)/api/netbuf.c \
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$(LWIPDIR)/api/netdb.c \
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$(LWIPDIR)/api/netdb.c \
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$(LWIPDIR)/api/netifapi.c \
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$(LWIPDIR)/api/netifapi.c \
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73
src/api/if.c
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73
src/api/if.c
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@ -0,0 +1,73 @@
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/**
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* @file
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* Interface Identification APIs from:
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* RFC 3493: Basic Socket Interface Extensions for IPv6
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* Section 4: Interface Identification
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*/
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/*
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* Copyright (c) 2017 Joel Cunningham <joel.cunningham@me.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Joel Cunningham <joel.cunningham@me.com>
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*
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*/
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#include "lwip/opt.h"
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#if LWIP_SOCKET
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#include "lwip/netifapi.h"
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char *
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lwip_if_indextoname(unsigned ifindex, char *ifname)
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{
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err_t err;
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if (ifindex > 0xff) {
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return NULL;
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}
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err = netifapi_netif_index_to_name((u8_t)ifindex, ifname);
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if (!err && ifname[0] != '\0') {
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return ifname;
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}
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return NULL;
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}
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unsigned int
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lwip_if_nametoindex(const char *ifname)
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{
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err_t err;
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u8_t index;
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err = netifapi_netif_name_to_index(ifname, &index);
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if (!err) {
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return index;
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}
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return 0; /* invalid index */
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}
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#endif /* LWIP_SOCKET */
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@ -46,6 +46,8 @@
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#include "lwip/memp.h"
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#include "lwip/memp.h"
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#include "lwip/priv/tcpip_priv.h"
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#include "lwip/priv/tcpip_priv.h"
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#include <string.h> /* strncpy */
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#define NETIFAPI_VAR_REF(name) API_VAR_REF(name)
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#define NETIFAPI_VAR_REF(name) API_VAR_REF(name)
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#define NETIFAPI_VAR_DECLARE(name) API_VAR_DECLARE(struct netifapi_msg, name)
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#define NETIFAPI_VAR_DECLARE(name) API_VAR_DECLARE(struct netifapi_msg, name)
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#define NETIFAPI_VAR_ALLOC(name) API_VAR_ALLOC(struct netifapi_msg, MEMP_NETIFAPI_MSG, name, ERR_MEM)
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#define NETIFAPI_VAR_ALLOC(name) API_VAR_ALLOC(struct netifapi_msg, MEMP_NETIFAPI_MSG, name, ERR_MEM)
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@ -95,6 +97,37 @@ netifapi_do_netif_set_addr(struct tcpip_api_call_data *m)
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}
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}
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#endif /* LWIP_IPV4 */
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#endif /* LWIP_IPV4 */
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/**
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* Call netif_name_to_index() inside the tcpip_thread context.
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*/
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static err_t
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netifapi_do_name_to_index(struct tcpip_api_call_data *m)
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{
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/* cast through void* to silence alignment warnings.
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* We know it works because the structs have been instantiated as struct netifapi_msg */
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struct netifapi_msg *msg = (struct netifapi_msg*)(void*)m;
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msg->msg.ifs.index = netif_name_to_index(msg->msg.ifs.name);
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return ERR_OK;
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}
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/**
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* Call netif_index_to_name() inside the tcpip_thread context.
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*/
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static err_t
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netifapi_do_index_to_name(struct tcpip_api_call_data *m)
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{
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/* cast through void* to silence alignment warnings.
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* We know it works because the structs have been instantiated as struct netifapi_msg */
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struct netifapi_msg *msg = (struct netifapi_msg*)(void*)m;
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if (!netif_index_to_name(msg->msg.ifs.index, msg->msg.ifs.name)) {
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/* return failure via empty name */
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msg->msg.ifs.name[0] = '\0';
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}
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return ERR_OK;
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}
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/**
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/**
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* Call the "errtfunc" (or the "voidfunc" if "errtfunc" is NULL) inside the
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* Call the "errtfunc" (or the "voidfunc" if "errtfunc" is NULL) inside the
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* tcpip_thread context.
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* tcpip_thread context.
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@ -218,4 +251,66 @@ netifapi_netif_common(struct netif *netif, netifapi_void_fn voidfunc,
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return err;
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return err;
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}
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}
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/**
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* @ingroup netifapi_netif
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* Call netif_name_to_index() in a thread-safe way by running that function inside the
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* tcpip_thread context.
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*
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* @param name the interface name of the netif
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* @param index output index of the found netif
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*/
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err_t
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netifapi_netif_name_to_index(const char *name, u8_t *index)
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{
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err_t err;
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NETIFAPI_VAR_DECLARE(msg);
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NETIFAPI_VAR_ALLOC(msg);
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*index = 0;
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#if LWIP_MPU_COMPATIBLE
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strncpy(NETIFAPI_VAR_REF(msg).msg.ifs.name, name, IF_NAMESIZE - 1);
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NETIFAPI_VAR_REF(msg).msg.ifs.name[IF_NAMESIZE - 1] = '\0';
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#else
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NETIFAPI_VAR_REF(msg).msg.ifs.name = (char *)name;
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#endif /* LWIP_MPU_COMPATIBLE */
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err = tcpip_api_call(netifapi_do_name_to_index, &API_VAR_REF(msg).call);
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if (!err) {
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*index = NETIFAPI_VAR_REF(msg).msg.ifs.index;
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}
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NETIFAPI_VAR_FREE(msg);
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return err;
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}
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/**
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* @ingroup netifapi_netif
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* Call netif_index_to_name() in a thread-safe way by running that function inside the
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* tcpip_thread context.
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*
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* @param index the interface index of the netif
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* @param name output name of the found netif, empty '\0' string if netif not found.
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* name should be of at least IF_NAMESIZE bytes
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*/
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err_t
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netifapi_netif_index_to_name(u8_t index, char *name)
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{
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err_t err;
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NETIFAPI_VAR_DECLARE(msg);
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NETIFAPI_VAR_ALLOC(msg);
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NETIFAPI_VAR_REF(msg).msg.ifs.index = index;
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#if !LWIP_MPU_COMPATIBLE
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NETIFAPI_VAR_REF(msg).msg.ifs.name = name;
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#endif /* LWIP_MPU_COMPATIBLE */
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err = tcpip_api_call(netifapi_do_index_to_name, &API_VAR_REF(msg).call);
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#if LWIP_MPU_COMPATIBLE
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if (!err) {
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strncpy(name, NETIFAPI_VAR_REF(msg).msg.ifs.name, IF_NAMESIZE - 1);
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name[IF_NAMESIZE - 1] = '\0';
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}
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#endif /* LWIP_MPU_COMPATIBLE */
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NETIFAPI_VAR_FREE(msg);
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return err;
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}
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#endif /* LWIP_NETIF_API */
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#endif /* LWIP_NETIF_API */
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@ -65,6 +65,7 @@
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#include "lwip/stats.h"
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#include "lwip/stats.h"
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#include "lwip/sys.h"
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#include "lwip/sys.h"
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#include "lwip/ip.h"
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#include "lwip/ip.h"
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#include "lwip/if.h"
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#if ENABLE_LOOPBACK
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#if ENABLE_LOOPBACK
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#if LWIP_NETIF_LOOPBACK_MULTITHREADING
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#if LWIP_NETIF_LOOPBACK_MULTITHREADING
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#include "lwip/tcpip.h"
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#include "lwip/tcpip.h"
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@ -1269,3 +1270,52 @@ netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipa
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return ERR_IF;
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return ERR_IF;
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}
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}
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#endif /* LWIP_IPV6 */
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#endif /* LWIP_IPV6 */
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/**
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* @ingroup netif_if
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* Return the interface index for the netif with name
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* or 0 (invalid interface) if not found/on error
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*
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* @param name the name of the netif
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*/
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u8_t
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netif_name_to_index(const char *name)
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{
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struct netif *netif = netif_find(name);
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if (netif != NULL) {
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return netif_num_to_index(netif);
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}
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/* No name found, return invalid index */
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return 0;
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}
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/**
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* @ingroup netif_if
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* Return the interface name for the netif matching index
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* or NULL if not found/on error
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*
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* @param index the interface index of the netif
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* @param name char buffer of at least IF_NAMESIZE bytes
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*/
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char *
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netif_index_to_name(u8_t index, char *name)
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{
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struct netif *curif = netif_list;
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u8_t num;
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if (index == 0) {
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return NULL; /* indexes start at 1 */
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}
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num = netif_index_to_num(index);
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/* find netif from num */
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while (curif != NULL) {
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if (curif->num == num) {
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name[0] = curif->name[0];
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name[1] = curif->name[1];
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lwip_itoa(&name[2], IF_NAMESIZE - 2, num);
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return name;
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}
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curif = curif->next;
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}
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return NULL;
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}
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54
src/include/lwip/if.h
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54
src/include/lwip/if.h
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/**
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* @file
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* Interface Identification APIs from:
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* RFC 3493: Basic Socket Interface Extensions for IPv6
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* Section 4: Interface Identification
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*/
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/*
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* Copyright (c) 2017 Joel Cunningham <joel.cunningham@me.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Joel Cunningham <joel.cunningham@me.com>
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*
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*/
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#ifndef LWIP_HDR_IF_H
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#define LWIP_HDR_IF_H
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#include "lwip/opt.h"
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#define IF_NAMESIZE 6 /* 2 chars, 3 nums, 1 \0 */
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char * lwip_if_indextoname(unsigned ifindex, char *ifname);
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unsigned int lwip_if_nametoindex(const char *ifname);
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#if LWIP_COMPAT_SOCKETS
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#define if_indextoname(ifindex, ifname) lwip_if_indextoname(ifindex,ifname)
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#define if_nametoindex(ifname) lwip_if_nametoindex(ifname)
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#endif /* LWIP_COMPAT_SOCKETS */
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#endif /* LWIP_HDR_IF_H */
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@ -490,6 +490,14 @@ err_t netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t
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#define NETIF_SET_HWADDRHINT(netif, hint)
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#define NETIF_SET_HWADDRHINT(netif, hint)
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#endif /* LWIP_NETIF_HWADDRHINT */
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#endif /* LWIP_NETIF_HWADDRHINT */
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/* @ingroup netif */
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u8_t netif_name_to_index(const char *name);
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char * netif_index_to_name(u8_t index, char *name);
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/* Interface indexes always start at 1 per RFC 3493, section 4, num starts at 0 */
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#define netif_num_to_index(netif) ((netif)->num + 1)
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#define netif_index_to_num(index) ((index) - 1)
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#ifdef __cplusplus
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#ifdef __cplusplus
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}
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}
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#endif
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#endif
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@ -40,6 +40,7 @@
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#include "lwip/netif.h"
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#include "lwip/netif.h"
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#include "lwip/dhcp.h"
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#include "lwip/dhcp.h"
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#include "lwip/autoip.h"
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#include "lwip/autoip.h"
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#include "lwip/if.h"
|
||||||
#include "lwip/priv/tcpip_priv.h"
|
#include "lwip/priv/tcpip_priv.h"
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#ifdef __cplusplus
|
||||||
@ -73,6 +74,14 @@ struct netifapi_msg {
|
|||||||
netifapi_void_fn voidfunc;
|
netifapi_void_fn voidfunc;
|
||||||
netifapi_errt_fn errtfunc;
|
netifapi_errt_fn errtfunc;
|
||||||
} common;
|
} common;
|
||||||
|
struct {
|
||||||
|
#if LWIP_MPU_COMPATIBLE
|
||||||
|
char name[IF_NAMESIZE];
|
||||||
|
#else /* LWIP_MPU_COMPATIBLE */
|
||||||
|
char *name;
|
||||||
|
#endif /* LWIP_MPU_COMPATIBLE */
|
||||||
|
u8_t index;
|
||||||
|
} ifs;
|
||||||
} msg;
|
} msg;
|
||||||
};
|
};
|
||||||
|
|
||||||
@ -92,6 +101,11 @@ err_t netifapi_netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr,
|
|||||||
err_t netifapi_netif_common(struct netif *netif, netifapi_void_fn voidfunc,
|
err_t netifapi_netif_common(struct netif *netif, netifapi_void_fn voidfunc,
|
||||||
netifapi_errt_fn errtfunc);
|
netifapi_errt_fn errtfunc);
|
||||||
|
|
||||||
|
/** @ingroup netifapi_netif */
|
||||||
|
err_t netifapi_netif_name_to_index(const char *name, u8_t *index);
|
||||||
|
/** @ingroup netifapi_netif */
|
||||||
|
err_t netifapi_netif_index_to_name(u8_t index, char *name);
|
||||||
|
|
||||||
/** @ingroup netifapi_netif */
|
/** @ingroup netifapi_netif */
|
||||||
#define netifapi_netif_remove(n) netifapi_netif_common(n, netif_remove, NULL)
|
#define netifapi_netif_remove(n) netifapi_netif_common(n, netif_remove, NULL)
|
||||||
/** @ingroup netifapi_netif */
|
/** @ingroup netifapi_netif */
|
||||||
|
33
src/include/posix/net/if.h
Normal file
33
src/include/posix/net/if.h
Normal file
@ -0,0 +1,33 @@
|
|||||||
|
/**
|
||||||
|
* @file
|
||||||
|
* This file is a posix wrapper for lwip/if.h.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* 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.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "lwip/if.h"
|
Loading…
Reference in New Issue
Block a user