mirror of
https://github.com/lwip-tcpip/lwip.git
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3275 lines
104 KiB
C
3275 lines
104 KiB
C
/**
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* @file
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* Sockets BSD-Like API module
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*
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* @defgroup socket Socket API
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* @ingroup sequential_api
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* BSD-style socket API.\n
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* Thread-safe, to be called from non-TCPIP threads only.\n
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* Can be activated by defining @ref LWIP_SOCKET to 1.\n
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* Header is in posix/sys/socket.h\b
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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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: Adam Dunkels <adam@sics.se>
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*
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* Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu>
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*
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*/
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#include "lwip/opt.h"
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#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */
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#include "lwip/sockets.h"
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#include "lwip/priv/sockets_priv.h"
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#include "lwip/api.h"
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#include "lwip/sys.h"
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#include "lwip/igmp.h"
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#include "lwip/inet.h"
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#include "lwip/tcp.h"
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#include "lwip/raw.h"
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#include "lwip/udp.h"
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#include "lwip/memp.h"
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#include "lwip/pbuf.h"
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#include "lwip/priv/tcpip_priv.h"
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#if LWIP_CHECKSUM_ON_COPY
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#include "lwip/inet_chksum.h"
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#endif
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#include <string.h>
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/* If the netconn API is not required publicly, then we include the necessary
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files here to get the implementation */
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#if !LWIP_NETCONN
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#undef LWIP_NETCONN
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#define LWIP_NETCONN 1
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#include "api_msg.c"
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#include "api_lib.c"
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#include "netbuf.c"
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#undef LWIP_NETCONN
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#define LWIP_NETCONN 0
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#endif
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#if LWIP_IPV4
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#define IP4ADDR_PORT_TO_SOCKADDR(sin, ipaddr, port) do { \
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(sin)->sin_len = sizeof(struct sockaddr_in); \
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(sin)->sin_family = AF_INET; \
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(sin)->sin_port = lwip_htons((port)); \
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inet_addr_from_ip4addr(&(sin)->sin_addr, ipaddr); \
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memset((sin)->sin_zero, 0, SIN_ZERO_LEN); }while(0)
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#define SOCKADDR4_TO_IP4ADDR_PORT(sin, ipaddr, port) do { \
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inet_addr_to_ip4addr(ip_2_ip4(ipaddr), &((sin)->sin_addr)); \
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(port) = lwip_ntohs((sin)->sin_port); }while(0)
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#endif /* LWIP_IPV4 */
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#if LWIP_IPV6
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#define IP6ADDR_PORT_TO_SOCKADDR(sin6, ipaddr, port) do { \
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(sin6)->sin6_len = sizeof(struct sockaddr_in6); \
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(sin6)->sin6_family = AF_INET6; \
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(sin6)->sin6_port = lwip_htons((port)); \
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(sin6)->sin6_flowinfo = 0; \
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inet6_addr_from_ip6addr(&(sin6)->sin6_addr, ipaddr); \
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(sin6)->sin6_scope_id = ip6_addr_zone(ipaddr); }while(0)
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#define SOCKADDR6_TO_IP6ADDR_PORT(sin6, ipaddr, port) do { \
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inet6_addr_to_ip6addr(ip_2_ip6(ipaddr), &((sin6)->sin6_addr)); \
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if (ip6_addr_has_scope(ip_2_ip6(ipaddr), IP6_UNKNOWN)) { \
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ip6_addr_set_zone(ip_2_ip6(ipaddr), (u8_t)((sin6)->sin6_scope_id)); \
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} \
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(port) = lwip_ntohs((sin6)->sin6_port); }while(0)
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#endif /* LWIP_IPV6 */
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#if LWIP_IPV4 && LWIP_IPV6
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static void sockaddr_to_ipaddr_port(const struct sockaddr* sockaddr, ip_addr_t* ipaddr, u16_t* port);
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#define IS_SOCK_ADDR_LEN_VALID(namelen) (((namelen) == sizeof(struct sockaddr_in)) || \
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((namelen) == sizeof(struct sockaddr_in6)))
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#define IS_SOCK_ADDR_TYPE_VALID(name) (((name)->sa_family == AF_INET) || \
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((name)->sa_family == AF_INET6))
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#define SOCK_ADDR_TYPE_MATCH(name, sock) \
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((((name)->sa_family == AF_INET) && !(NETCONNTYPE_ISIPV6((sock)->conn->type))) || \
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(((name)->sa_family == AF_INET6) && (NETCONNTYPE_ISIPV6((sock)->conn->type))))
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#define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) do { \
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if (((ipaddr) && IP_IS_ANY_TYPE_VAL(*ipaddr)) || IP_IS_V6(ipaddr)) { \
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IP6ADDR_PORT_TO_SOCKADDR((struct sockaddr_in6*)(void*)(sockaddr), ip_2_ip6(ipaddr), port); \
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} else { \
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IP4ADDR_PORT_TO_SOCKADDR((struct sockaddr_in*)(void*)(sockaddr), ip_2_ip4(ipaddr), port); \
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} } while(0)
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#define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) sockaddr_to_ipaddr_port(sockaddr, ipaddr, &(port))
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#define DOMAIN_TO_NETCONN_TYPE(domain, type) (((domain) == AF_INET) ? \
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(type) : (enum netconn_type)((type) | NETCONN_TYPE_IPV6))
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#elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */
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#define IS_SOCK_ADDR_LEN_VALID(namelen) ((namelen) == sizeof(struct sockaddr_in6))
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#define IS_SOCK_ADDR_TYPE_VALID(name) ((name)->sa_family == AF_INET6)
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#define SOCK_ADDR_TYPE_MATCH(name, sock) 1
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#define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) \
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IP6ADDR_PORT_TO_SOCKADDR((struct sockaddr_in6*)(void*)(sockaddr), ip_2_ip6(ipaddr), port)
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#define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) \
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SOCKADDR6_TO_IP6ADDR_PORT((const struct sockaddr_in6*)(const void*)(sockaddr), ipaddr, port)
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#define DOMAIN_TO_NETCONN_TYPE(domain, netconn_type) (netconn_type)
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#else /*-> LWIP_IPV4: LWIP_IPV4 && LWIP_IPV6 */
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#define IS_SOCK_ADDR_LEN_VALID(namelen) ((namelen) == sizeof(struct sockaddr_in))
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#define IS_SOCK_ADDR_TYPE_VALID(name) ((name)->sa_family == AF_INET)
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#define SOCK_ADDR_TYPE_MATCH(name, sock) 1
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#define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) \
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IP4ADDR_PORT_TO_SOCKADDR((struct sockaddr_in*)(void*)(sockaddr), ip_2_ip4(ipaddr), port)
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#define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) \
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SOCKADDR4_TO_IP4ADDR_PORT((const struct sockaddr_in*)(const void*)(sockaddr), ipaddr, port)
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#define DOMAIN_TO_NETCONN_TYPE(domain, netconn_type) (netconn_type)
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#endif /* LWIP_IPV6 */
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#define IS_SOCK_ADDR_TYPE_VALID_OR_UNSPEC(name) (((name)->sa_family == AF_UNSPEC) || \
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IS_SOCK_ADDR_TYPE_VALID(name))
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#define SOCK_ADDR_TYPE_MATCH_OR_UNSPEC(name, sock) (((name)->sa_family == AF_UNSPEC) || \
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SOCK_ADDR_TYPE_MATCH(name, sock))
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#define IS_SOCK_ADDR_ALIGNED(name) ((((mem_ptr_t)(name)) % 4) == 0)
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#define LWIP_SOCKOPT_CHECK_OPTLEN(sock, optlen, opttype) do { if ((optlen) < sizeof(opttype)) { done_socket(sock); return EINVAL; }}while(0)
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#define LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, opttype) do { \
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LWIP_SOCKOPT_CHECK_OPTLEN(sock, optlen, opttype); \
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if ((sock)->conn == NULL) { done_socket(sock); return EINVAL; } }while(0)
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#define LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, opttype) do { \
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LWIP_SOCKOPT_CHECK_OPTLEN(sock, optlen, opttype); \
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if (((sock)->conn == NULL) || ((sock)->conn->pcb.tcp == NULL)) { done_socket(sock); return EINVAL; } }while(0)
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#define LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, opttype, netconntype) do { \
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LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, opttype); \
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if (NETCONNTYPE_GROUP(netconn_type((sock)->conn)) != netconntype) { done_socket(sock); return ENOPROTOOPT; } }while(0)
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#define LWIP_SETGETSOCKOPT_DATA_VAR_REF(name) API_VAR_REF(name)
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#define LWIP_SETGETSOCKOPT_DATA_VAR_DECLARE(name) API_VAR_DECLARE(struct lwip_setgetsockopt_data, name)
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#define LWIP_SETGETSOCKOPT_DATA_VAR_FREE(name) API_VAR_FREE(MEMP_SOCKET_SETGETSOCKOPT_DATA, name)
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#if LWIP_MPU_COMPATIBLE
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#define LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(name, sock) do { \
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name = (struct lwip_setgetsockopt_data *)memp_malloc(MEMP_SOCKET_SETGETSOCKOPT_DATA); \
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if (name == NULL) { \
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sock_set_errno(sock, ENOMEM); \
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done_socket(sock); \
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return -1; \
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} }while(0)
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#else /* LWIP_MPU_COMPATIBLE */
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#define LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(name, sock)
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#endif /* LWIP_MPU_COMPATIBLE */
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#if LWIP_SO_SNDRCVTIMEO_NONSTANDARD
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#define LWIP_SO_SNDRCVTIMEO_OPTTYPE int
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#define LWIP_SO_SNDRCVTIMEO_SET(optval, val) (*(int *)(optval) = (val))
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#define LWIP_SO_SNDRCVTIMEO_GET_MS(optval) ((s32_t)*(const int*)(optval))
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#else
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#define LWIP_SO_SNDRCVTIMEO_OPTTYPE struct timeval
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#define LWIP_SO_SNDRCVTIMEO_SET(optval, val) do { \
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s32_t loc = (val); \
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((struct timeval *)(optval))->tv_sec = (loc) / 1000U; \
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((struct timeval *)(optval))->tv_usec = ((loc) % 1000U) * 1000U; }while(0)
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#define LWIP_SO_SNDRCVTIMEO_GET_MS(optval) ((((const struct timeval *)(optval))->tv_sec * 1000U) + (((const struct timeval *)(optval))->tv_usec / 1000U))
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#endif
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#define NUM_SOCKETS MEMP_NUM_NETCONN
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/** This is overridable for the rare case where more than 255 threads
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* select on the same socket...
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*/
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#ifndef SELWAIT_T
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#define SELWAIT_T u8_t
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#endif
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union lwip_sock_lastdata {
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struct netbuf *netbuf;
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struct pbuf *pbuf;
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};
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/** Contains all internal pointers and states used for a socket */
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struct lwip_sock {
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/** sockets currently are built on netconns, each socket has one netconn */
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struct netconn *conn;
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/** last error that occurred on this socket */
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int err;
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/** data that was left from the previous read */
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union lwip_sock_lastdata lastdata;
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#if LWIP_SOCKET_SELECT
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/** number of times data was received, set by event_callback(),
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tested by the receive and select functions */
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s16_t rcvevent;
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/** number of times data was ACKed (free send buffer), set by event_callback(),
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tested by select */
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u16_t sendevent;
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/** error happened for this socket, set by event_callback(), tested by select */
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u16_t errevent;
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/** counter of how many threads are waiting for this socket using select */
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SELWAIT_T select_waiting;
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#endif /* LWIP_SOCKET_SELECT */
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#if LWIP_NETCONN_FULLDUPLEX
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/* counter of how many threads are using a struct lwip_sock (not the 'int') */
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u8_t fd_used;
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/* status of pending close/delete actions */
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u8_t fd_free_pending;
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#define LWIP_SOCK_FD_FREE_TCP 1
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#define LWIP_SOCK_FD_FREE_FREE 2
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#endif
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};
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#if LWIP_NETCONN_SEM_PER_THREAD
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#define SELECT_SEM_T sys_sem_t*
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#define SELECT_SEM_PTR(sem) (sem)
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#else /* LWIP_NETCONN_SEM_PER_THREAD */
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#define SELECT_SEM_T sys_sem_t
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#define SELECT_SEM_PTR(sem) (&(sem))
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#endif /* LWIP_NETCONN_SEM_PER_THREAD */
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#if LWIP_SOCKET_SELECT
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/** Description for a task waiting in select */
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struct lwip_select_cb {
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/** Pointer to the next waiting task */
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struct lwip_select_cb *next;
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/** Pointer to the previous waiting task */
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struct lwip_select_cb *prev;
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/** readset passed to select */
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fd_set *readset;
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/** writeset passed to select */
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fd_set *writeset;
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/** unimplemented: exceptset passed to select */
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fd_set *exceptset;
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/** don't signal the same semaphore twice: set to 1 when signalled */
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int sem_signalled;
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/** semaphore to wake up a task waiting for select */
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SELECT_SEM_T sem;
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};
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#endif /* LWIP_SOCKET_SELECT */
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/** A struct sockaddr replacement that has the same alignment as sockaddr_in/
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* sockaddr_in6 if instantiated.
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*/
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union sockaddr_aligned {
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struct sockaddr sa;
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#if LWIP_IPV6
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struct sockaddr_in6 sin6;
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#endif /* LWIP_IPV6 */
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#if LWIP_IPV4
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struct sockaddr_in sin;
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#endif /* LWIP_IPV4 */
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};
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#if LWIP_IGMP
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/* Define the number of IPv4 multicast memberships, default is one per socket */
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#ifndef LWIP_SOCKET_MAX_MEMBERSHIPS
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#define LWIP_SOCKET_MAX_MEMBERSHIPS NUM_SOCKETS
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#endif
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/* This is to keep track of IP_ADD_MEMBERSHIP calls to drop the membership when
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a socket is closed */
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struct lwip_socket_multicast_pair {
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/** the socket */
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struct lwip_sock* sock;
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/** the interface address */
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ip4_addr_t if_addr;
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/** the group address */
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ip4_addr_t multi_addr;
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};
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struct lwip_socket_multicast_pair socket_ipv4_multicast_memberships[LWIP_SOCKET_MAX_MEMBERSHIPS];
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static int lwip_socket_register_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr);
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static void lwip_socket_unregister_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr);
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static void lwip_socket_drop_registered_memberships(int s);
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#endif /* LWIP_IGMP */
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/** The global array of available sockets */
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static struct lwip_sock sockets[NUM_SOCKETS];
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#if LWIP_SOCKET_SELECT
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/** The global list of tasks waiting for select */
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static struct lwip_select_cb *select_cb_list;
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/** This counter is increased from lwip_select when the list is changed
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and checked in event_callback to see if it has changed. */
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static volatile int select_cb_ctr;
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#endif /* LWIP_SOCKET_SELECT */
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#define sock_set_errno(sk, e) do { \
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const int sockerr = (e); \
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sk->err = sockerr; \
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set_errno(sockerr); \
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} while (0)
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/* Forward declaration of some functions */
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#if LWIP_SOCKET_SELECT
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static void event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len);
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#define DEFAULT_SOCKET_EVENTCB event_callback
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#else
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#define DEFAULT_SOCKET_EVENTCB NULL
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#endif
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#if !LWIP_TCPIP_CORE_LOCKING
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static void lwip_getsockopt_callback(void *arg);
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static void lwip_setsockopt_callback(void *arg);
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#endif
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static int lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *optlen);
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static int lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_t optlen);
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static void free_socket(struct lwip_sock *sock, int is_tcp);
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#if LWIP_IPV4 && LWIP_IPV6
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static void
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sockaddr_to_ipaddr_port(const struct sockaddr* sockaddr, ip_addr_t* ipaddr, u16_t* port)
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{
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if ((sockaddr->sa_family) == AF_INET6) {
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SOCKADDR6_TO_IP6ADDR_PORT((const struct sockaddr_in6*)(const void*)(sockaddr), ipaddr, *port);
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ipaddr->type = IPADDR_TYPE_V6;
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} else {
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SOCKADDR4_TO_IP4ADDR_PORT((const struct sockaddr_in*)(const void*)(sockaddr), ipaddr, *port);
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ipaddr->type = IPADDR_TYPE_V4;
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}
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}
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#endif /* LWIP_IPV4 && LWIP_IPV6 */
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/** LWIP_NETCONN_SEM_PER_THREAD==1: initialize thread-local semaphore */
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void
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lwip_socket_thread_init(void)
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{
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netconn_thread_init();
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}
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/** LWIP_NETCONN_SEM_PER_THREAD==1: destroy thread-local semaphore */
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void
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lwip_socket_thread_cleanup(void)
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{
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netconn_thread_cleanup();
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}
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#if LWIP_NETCONN_FULLDUPLEX
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/* Thread-safe increment of sock->fd_used, with overflow check */
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static void
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sock_inc_used(struct lwip_sock *sock)
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{
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LWIP_ASSERT("sock != NULL", sock != NULL);
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SYS_ARCH_INC(sock->fd_used, 1);
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LWIP_ASSERT("sock->fd_used != 0", sock->fd_used != 0);
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}
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/* In full-duplex mode,sock->fd_used != 0 prevents a socket descriptor from being
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* released (and possibly reused) when used from more than one thread
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* (e.g. read-while-write or close-while-write, etc)
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* This function is called at the end of functions using (try)get_socket*().
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*/
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static void
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done_socket(struct lwip_sock *sock)
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{
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SYS_ARCH_DECL_PROTECT(lev);
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LWIP_ASSERT("sock != NULL", sock != NULL);
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SYS_ARCH_PROTECT(lev);
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LWIP_ASSERT("sock->fd_used > 0", sock->fd_used > 0);
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if (--sock->fd_used == 0) {
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if (sock->fd_free_pending) {
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/* free the socket */
|
|
sock->fd_used = 1;
|
|
free_socket(sock, sock->fd_free_pending & LWIP_SOCK_FD_FREE_TCP);
|
|
}
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
#else /* LWIP_NETCONN_FULLDUPLEX */
|
|
#define sock_inc_used(sock)
|
|
#define done_socket(sock)
|
|
#endif /* LWIP_NETCONN_FULLDUPLEX */
|
|
|
|
/* Translate a socket 'int' into a pointer (only fails if the index is invalid) */
|
|
static struct lwip_sock *
|
|
tryget_socket_unconn(int fd)
|
|
{
|
|
int s = fd - LWIP_SOCKET_OFFSET;
|
|
if ((s < 0) || (s >= NUM_SOCKETS)) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("tryget_socket_unconn(%d): invalid\n", fd));
|
|
return NULL;
|
|
}
|
|
sock_inc_used(&sockets[s]);
|
|
return &sockets[s];
|
|
}
|
|
|
|
/**
|
|
* Same as get_socket but doesn't set errno
|
|
*
|
|
* @param fd externally used socket index
|
|
* @return struct lwip_sock for the socket or NULL if not found
|
|
*/
|
|
static struct lwip_sock *
|
|
tryget_socket(int fd)
|
|
{
|
|
struct lwip_sock *sock = tryget_socket_unconn(fd);
|
|
if (sock != NULL) {
|
|
if (sock->conn) {
|
|
return sock;
|
|
}
|
|
done_socket(sock);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Map a externally used socket index to the internal socket representation.
|
|
*
|
|
* @param fd externally used socket index
|
|
* @return struct lwip_sock for the socket or NULL if not found
|
|
*/
|
|
static struct lwip_sock *
|
|
get_socket(int fd)
|
|
{
|
|
struct lwip_sock *sock = tryget_socket(fd);
|
|
if (!sock) {
|
|
if ((fd < LWIP_SOCKET_OFFSET) || (fd >= (LWIP_SOCKET_OFFSET + NUM_SOCKETS))) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", fd));
|
|
}
|
|
set_errno(EBADF);
|
|
return NULL;
|
|
}
|
|
return sock;
|
|
}
|
|
|
|
/**
|
|
* Allocate a new socket for a given netconn.
|
|
*
|
|
* @param newconn the netconn for which to allocate a socket
|
|
* @param accepted 1 if socket has been created by accept(),
|
|
* 0 if socket has been created by socket()
|
|
* @return the index of the new socket; -1 on error
|
|
*/
|
|
static int
|
|
alloc_socket(struct netconn *newconn, int accepted)
|
|
{
|
|
int i;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
LWIP_UNUSED_ARG(accepted);
|
|
|
|
/* allocate a new socket identifier */
|
|
for (i = 0; i < NUM_SOCKETS; ++i) {
|
|
/* Protect socket array */
|
|
SYS_ARCH_PROTECT(lev);
|
|
if (!sockets[i].conn) {
|
|
#if LWIP_NETCONN_FULLDUPLEX
|
|
if (sockets[i].fd_used) {
|
|
continue;
|
|
}
|
|
sockets[i].fd_used = 1;
|
|
sockets[i].fd_free_pending = 0;
|
|
#endif
|
|
sockets[i].conn = newconn;
|
|
/* The socket is not yet known to anyone, so no need to protect
|
|
after having marked it as used. */
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
sockets[i].lastdata.pbuf = NULL;
|
|
#if LWIP_SOCKET_SELECT
|
|
LWIP_ASSERT("sockets[i].select_waiting == 0", sockets[i].select_waiting == 0);
|
|
sockets[i].rcvevent = 0;
|
|
/* TCP sendbuf is empty, but the socket is not yet writable until connected
|
|
* (unless it has been created by accept()). */
|
|
sockets[i].sendevent = (NETCONNTYPE_GROUP(newconn->type) == NETCONN_TCP ? (accepted != 0) : 1);
|
|
sockets[i].errevent = 0;
|
|
#endif /* LWIP_SOCKET_SELECT */
|
|
sockets[i].err = 0;
|
|
return i + LWIP_SOCKET_OFFSET;
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/** Free a socket. The socket's netconn must have been
|
|
* delete before!
|
|
*
|
|
* @param sock the socket to free
|
|
* @param is_tcp != 0 for TCP sockets, used to free lastdata
|
|
*/
|
|
static void
|
|
free_socket(struct lwip_sock *sock, int is_tcp)
|
|
{
|
|
union lwip_sock_lastdata lastdata;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
|
|
/* Protect socket array */
|
|
SYS_ARCH_PROTECT(lev);
|
|
|
|
#if LWIP_NETCONN_FULLDUPLEX
|
|
LWIP_ASSERT("sock->fd_used > 0", sock->fd_used > 0);
|
|
if (--sock->fd_used > 0) {
|
|
sock->fd_free_pending = LWIP_SOCK_FD_FREE_FREE | is_tcp ? LWIP_SOCK_FD_FREE_TCP : 0;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
lastdata = sock->lastdata;
|
|
sock->lastdata.pbuf = NULL;
|
|
sock->err = 0;
|
|
sock->conn = NULL;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
/* don't use 'sock' after this line, as another task might have allocated it */
|
|
|
|
if (lastdata.pbuf != NULL) {
|
|
if (is_tcp) {
|
|
pbuf_free(lastdata.pbuf);
|
|
} else {
|
|
netbuf_delete(lastdata.netbuf);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Below this, the well-known socket functions are implemented.
|
|
* Use google.com or opengroup.org to get a good description :-)
|
|
*
|
|
* Exceptions are documented!
|
|
*/
|
|
|
|
int
|
|
lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
|
|
{
|
|
struct lwip_sock *sock, *nsock;
|
|
struct netconn *newconn;
|
|
ip_addr_t naddr;
|
|
u16_t port = 0;
|
|
int newsock;
|
|
err_t err;
|
|
int recvevent;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s));
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
/* wait for a new connection */
|
|
err = netconn_accept(sock->conn, &newconn);
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): netconn_acept failed, err=%d\n", s, err));
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
sock_set_errno(sock, EOPNOTSUPP);
|
|
} else if (err == ERR_CLSD) {
|
|
sock_set_errno(sock, EINVAL);
|
|
} else {
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
}
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
LWIP_ASSERT("newconn != NULL", newconn != NULL);
|
|
|
|
newsock = alloc_socket(newconn, 1);
|
|
if (newsock == -1) {
|
|
netconn_delete(newconn);
|
|
sock_set_errno(sock, ENFILE);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LWIP_SOCKET_OFFSET));
|
|
nsock = &sockets[newsock - LWIP_SOCKET_OFFSET];
|
|
|
|
/* See event_callback: If data comes in right away after an accept, even
|
|
* though the server task might not have created a new socket yet.
|
|
* In that case, newconn->socket is counted down (newconn->socket--),
|
|
* so nsock->rcvevent is >= 1 here!
|
|
*/
|
|
SYS_ARCH_PROTECT(lev);
|
|
recvevent = (s16_t)(-1 - newconn->socket);
|
|
newconn->socket = newsock;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
|
|
if (newconn->callback) {
|
|
while(recvevent > 0) {
|
|
recvevent--;
|
|
newconn->callback(newconn, NETCONN_EVT_RCVPLUS, 0);
|
|
}
|
|
}
|
|
|
|
/* Note that POSIX only requires us to check addr is non-NULL. addrlen must
|
|
* not be NULL if addr is valid.
|
|
*/
|
|
if ((addr != NULL) && (addrlen != NULL)) {
|
|
union sockaddr_aligned tempaddr;
|
|
/* get the IP address and port of the remote host */
|
|
err = netconn_peer(newconn, &naddr, &port);
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): netconn_peer failed, err=%d\n", s, err));
|
|
netconn_delete(newconn);
|
|
free_socket(nsock, 1);
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
IPADDR_PORT_TO_SOCKADDR(&tempaddr, &naddr, port);
|
|
if (*addrlen > tempaddr.sa.sa_len) {
|
|
*addrlen = tempaddr.sa.sa_len;
|
|
}
|
|
MEMCPY(addr, &tempaddr, *addrlen);
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock));
|
|
ip_addr_debug_print_val(SOCKETS_DEBUG, naddr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F"\n", port));
|
|
} else {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d", s, newsock));
|
|
}
|
|
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
done_socket(nsock);
|
|
return newsock;
|
|
}
|
|
|
|
int
|
|
lwip_bind(int s, const struct sockaddr *name, socklen_t namelen)
|
|
{
|
|
struct lwip_sock *sock;
|
|
ip_addr_t local_addr;
|
|
u16_t local_port;
|
|
err_t err;
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (!SOCK_ADDR_TYPE_MATCH(name, sock)) {
|
|
/* sockaddr does not match socket type (IPv4/IPv6) */
|
|
sock_set_errno(sock, err_to_errno(ERR_VAL));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
/* check size, family and alignment of 'name' */
|
|
LWIP_ERROR("lwip_bind: invalid address", (IS_SOCK_ADDR_LEN_VALID(namelen) &&
|
|
IS_SOCK_ADDR_TYPE_VALID(name) && IS_SOCK_ADDR_ALIGNED(name)),
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
LWIP_UNUSED_ARG(namelen);
|
|
|
|
SOCKADDR_TO_IPADDR_PORT(name, &local_addr, local_port);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s));
|
|
ip_addr_debug_print_val(SOCKETS_DEBUG, local_addr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", local_port));
|
|
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Unmap IPv4 mapped IPv6 addresses */
|
|
if (IP_IS_V6_VAL(local_addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&local_addr))) {
|
|
unmap_ipv4_mapped_ipv6(ip_2_ip4(&local_addr), ip_2_ip6(&local_addr));
|
|
IP_SET_TYPE_VAL(local_addr, IPADDR_TYPE_V4);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
err = netconn_bind(sock->conn, &local_addr, local_port);
|
|
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s));
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
lwip_close(int s)
|
|
{
|
|
struct lwip_sock *sock;
|
|
int is_tcp = 0;
|
|
err_t err;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_close(%d)\n", s));
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (sock->conn != NULL) {
|
|
is_tcp = NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP;
|
|
} else {
|
|
LWIP_ASSERT("sock->lastdata == NULL", sock->lastdata.pbuf == NULL);
|
|
}
|
|
|
|
#if LWIP_IGMP
|
|
/* drop all possibly joined IGMP memberships */
|
|
lwip_socket_drop_registered_memberships(s);
|
|
#endif /* LWIP_IGMP */
|
|
|
|
err = netconn_delete(sock->conn);
|
|
if (err != ERR_OK) {
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
free_socket(sock, is_tcp);
|
|
set_errno(0);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
lwip_connect(int s, const struct sockaddr *name, socklen_t namelen)
|
|
{
|
|
struct lwip_sock *sock;
|
|
err_t err;
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (!SOCK_ADDR_TYPE_MATCH_OR_UNSPEC(name, sock)) {
|
|
/* sockaddr does not match socket type (IPv4/IPv6) */
|
|
sock_set_errno(sock, err_to_errno(ERR_VAL));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
LWIP_UNUSED_ARG(namelen);
|
|
if (name->sa_family == AF_UNSPEC) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s));
|
|
err = netconn_disconnect(sock->conn);
|
|
} else {
|
|
ip_addr_t remote_addr;
|
|
u16_t remote_port;
|
|
|
|
/* check size, family and alignment of 'name' */
|
|
LWIP_ERROR("lwip_connect: invalid address", IS_SOCK_ADDR_LEN_VALID(namelen) &&
|
|
IS_SOCK_ADDR_TYPE_VALID_OR_UNSPEC(name) && IS_SOCK_ADDR_ALIGNED(name),
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
|
|
SOCKADDR_TO_IPADDR_PORT(name, &remote_addr, remote_port);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, addr=", s));
|
|
ip_addr_debug_print_val(SOCKETS_DEBUG, remote_addr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", remote_port));
|
|
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Unmap IPv4 mapped IPv6 addresses */
|
|
if (IP_IS_V6_VAL(remote_addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&remote_addr))) {
|
|
unmap_ipv4_mapped_ipv6(ip_2_ip4(&remote_addr), ip_2_ip6(&remote_addr));
|
|
IP_SET_TYPE_VAL(remote_addr, IPADDR_TYPE_V4);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
err = netconn_connect(sock->conn, &remote_addr, remote_port);
|
|
}
|
|
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s));
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Set a socket into listen mode.
|
|
* The socket may not have been used for another connection previously.
|
|
*
|
|
* @param s the socket to set to listening mode
|
|
* @param backlog (ATTENTION: needs TCP_LISTEN_BACKLOG=1)
|
|
* @return 0 on success, non-zero on failure
|
|
*/
|
|
int
|
|
lwip_listen(int s, int backlog)
|
|
{
|
|
struct lwip_sock *sock;
|
|
err_t err;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d, backlog=%d)\n", s, backlog));
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
/* limit the "backlog" parameter to fit in an u8_t */
|
|
backlog = LWIP_MIN(LWIP_MAX(backlog, 0), 0xff);
|
|
|
|
err = netconn_listen_with_backlog(sock->conn, (u8_t)backlog);
|
|
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err));
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
sock_set_errno(sock, EOPNOTSUPP);
|
|
} else {
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
}
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
|
|
/* Helper function to loop over receiving pbufs from netconn
|
|
* until "len" bytes are received or we're otherwise done.
|
|
* Keeps sock->lastdata for peeking or partly copying.
|
|
*/
|
|
static int
|
|
lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags)
|
|
{
|
|
u8_t apiflags = NETCONN_NOAUTORCVD;
|
|
int recvd = 0;
|
|
int recv_left = len;
|
|
|
|
LWIP_ASSERT("no socket given", sock != NULL);
|
|
LWIP_ASSERT("this should be checked internally", NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP);
|
|
|
|
if (flags & MSG_DONTWAIT) {
|
|
apiflags = NETCONN_DONTBLOCK;
|
|
} else {
|
|
apiflags = 0;
|
|
}
|
|
|
|
do {
|
|
struct pbuf *p;
|
|
err_t err;
|
|
u16_t copylen;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: top while sock->lastdata=%p\n", (void*)sock->lastdata.pbuf));
|
|
/* Check if there is data left from the last recv operation. */
|
|
if (sock->lastdata.pbuf) {
|
|
p = sock->lastdata.pbuf;
|
|
} else {
|
|
/* No data was left from the previous operation, so we try to get
|
|
some from the network. */
|
|
err = netconn_recv_tcp_pbuf_flags(sock->conn, &p, apiflags);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: netconn_recv err=%d, pbuf=%p\n",
|
|
err, (void*)p));
|
|
|
|
if (err != ERR_OK) {
|
|
if (recvd > 0) {
|
|
/* already received data, return that (this trusts in getting the same error from
|
|
netconn layer again next time netconn_recv is called) */
|
|
if (err == ERR_CLSD) {
|
|
/* closed but already received data, ensure select gets the FIN, too */
|
|
if (sock->conn->callback != NULL) {
|
|
sock->conn->callback(sock->conn, NETCONN_EVT_RCVPLUS, 0);
|
|
}
|
|
}
|
|
goto lwip_recv_tcp_done;
|
|
}
|
|
/* We should really do some error checking here. */
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: p == NULL, error is \"%s\"!\n",
|
|
lwip_strerr(err)));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
if (err == ERR_CLSD) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
LWIP_ASSERT("p != NULL", p != NULL);
|
|
sock->lastdata.pbuf = p;
|
|
}
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: buflen=%"U16_F" recv_left=%d off=%d\n",
|
|
p->tot_len, recv_left, recvd));
|
|
|
|
if (recv_left > p->tot_len) {
|
|
copylen = p->tot_len;
|
|
} else {
|
|
copylen = (u16_t)recv_left;
|
|
}
|
|
|
|
/* copy the contents of the received buffer into
|
|
the supplied memory pointer mem */
|
|
pbuf_copy_partial(p, (u8_t*)mem + recvd, copylen, 0);
|
|
|
|
recvd += copylen;
|
|
|
|
/* TCP combines multiple pbufs for one recv */
|
|
LWIP_ASSERT("invalid copylen, len would underflow", recv_left >= copylen);
|
|
recv_left -= copylen;
|
|
|
|
/* Unless we peek the incoming message... */
|
|
if ((flags & MSG_PEEK) == 0) {
|
|
/* ... check if there is data left in the pbuf */
|
|
LWIP_ASSERT("invalid copylen", p->tot_len >= copylen);
|
|
if (p->tot_len - copylen > 0) {
|
|
/* If so, it should be saved in the sock structure for the next recv call.
|
|
We store the pbuf but hide/free the consumed data: */
|
|
sock->lastdata.pbuf = pbuf_free_header(p, copylen);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: lastdata now pbuf=%p\n", (void*)sock->lastdata.pbuf));
|
|
} else {
|
|
sock->lastdata.pbuf = NULL;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: deleting pbuf=%p\n", (void*)p));
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
/* once we have some data to return, only add more if we don't need to wait */
|
|
apiflags |= NETCONN_DONTBLOCK;
|
|
/* @todo: do we need to support peeking more than one pbuf? */
|
|
} while ((recv_left > 0) || (flags & MSG_PEEK));
|
|
lwip_recv_tcp_done:
|
|
if (recvd > 0) {
|
|
/* ensure window update after copying all data */
|
|
netconn_tcp_recvd(sock->conn, recvd);
|
|
}
|
|
sock_set_errno(sock, 0);
|
|
return recvd;
|
|
}
|
|
|
|
/* Convert a netbuf's address data to struct sockaddr */
|
|
static int
|
|
lwip_sock_make_addr(struct netconn *conn, ip_addr_t *fromaddr, u16_t port,
|
|
struct sockaddr *from, socklen_t *fromlen)
|
|
{
|
|
int truncated = 0;
|
|
union sockaddr_aligned saddr;
|
|
|
|
LWIP_UNUSED_ARG(conn);
|
|
|
|
LWIP_ASSERT("from != NULL", from != NULL);
|
|
LWIP_ASSERT("fromlen != NULL", fromlen != NULL);
|
|
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Map IPv4 addresses to IPv4 mapped IPv6 */
|
|
if (NETCONNTYPE_ISIPV6(netconn_type(conn)) && IP_IS_V4(fromaddr)) {
|
|
ip4_2_ipv4_mapped_ipv6(ip_2_ip6(fromaddr), ip_2_ip4(fromaddr));
|
|
IP_SET_TYPE(fromaddr, IPADDR_TYPE_V6);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
IPADDR_PORT_TO_SOCKADDR(&saddr, fromaddr, port);
|
|
if (*fromlen < saddr.sa.sa_len) {
|
|
truncated = 1;
|
|
} else if (*fromlen > saddr.sa.sa_len) {
|
|
*fromlen = saddr.sa.sa_len;
|
|
}
|
|
MEMCPY(from, &saddr, *fromlen);
|
|
return truncated;
|
|
}
|
|
|
|
/* Helper function to get a tcp socket's remote address info */
|
|
static int
|
|
lwip_recv_tcp_from(struct lwip_sock *sock, struct sockaddr *from, socklen_t *fromlen, const char *dbg_fn, int dbg_s, int dbg_ret)
|
|
{
|
|
if (sock == NULL) {
|
|
return 0;
|
|
}
|
|
LWIP_UNUSED_ARG(dbg_fn);
|
|
LWIP_UNUSED_ARG(dbg_s);
|
|
LWIP_UNUSED_ARG(dbg_ret);
|
|
|
|
#if !SOCKETS_DEBUG
|
|
if (from && fromlen)
|
|
#endif /* !SOCKETS_DEBUG */
|
|
{
|
|
/* get remote addr/port from tcp_pcb */
|
|
u16_t port;
|
|
ip_addr_t tmpaddr;
|
|
netconn_getaddr(sock->conn, &tmpaddr, &port, 0);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("%s(%d): addr=", dbg_fn, dbg_s));
|
|
ip_addr_debug_print(SOCKETS_DEBUG, &tmpaddr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F" len=%d\n", port, dbg_ret));
|
|
if (from && fromlen) {
|
|
return lwip_sock_make_addr(sock->conn, &tmpaddr, port, from, fromlen);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Helper function to receive a netbuf from a udp or raw netconn.
|
|
* Keeps sock->lastdata for peeking.
|
|
*/
|
|
static err_t
|
|
lwip_recvfrom_udp_raw(struct lwip_sock *sock, int flags, const struct iovec *iov, int iovcnt,
|
|
struct sockaddr *from, socklen_t *fromlen, u16_t *datagram_len, int dbg_s)
|
|
{
|
|
struct netbuf *buf;
|
|
u8_t apiflags;
|
|
err_t err;
|
|
u16_t buflen, copylen, copied;
|
|
int i;
|
|
|
|
LWIP_ERROR("lwip_recvfrom_udp_raw: invalid arguments", (iov != NULL) || (iovcnt <= 0), return ERR_ARG;);
|
|
|
|
if (flags & MSG_DONTWAIT) {
|
|
apiflags = NETCONN_DONTBLOCK;
|
|
} else {
|
|
apiflags = 0;
|
|
}
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom_udp_raw[UDP/RAW]: top sock->lastdata=%p\n", (void*)sock->lastdata.netbuf));
|
|
/* Check if there is data left from the last recv operation. */
|
|
buf = sock->lastdata.netbuf;
|
|
if (buf == NULL) {
|
|
/* No data was left from the previous operation, so we try to get
|
|
some from the network. */
|
|
err = netconn_recv_udp_raw_netbuf_flags(sock->conn, &buf, apiflags);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom_udp_raw[UDP/RAW]: netconn_recv err=%d, netbuf=%p\n",
|
|
err, (void*)buf));
|
|
|
|
if (err != ERR_OK) {
|
|
return err;
|
|
}
|
|
LWIP_ASSERT("buf != NULL", buf != NULL);
|
|
sock->lastdata.netbuf = buf;
|
|
}
|
|
buflen = buf->p->tot_len;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom_udp_raw: buflen=%"U16_F"\n", buflen));
|
|
|
|
copied = 0;
|
|
/* copy the pbuf payload into the iovs */
|
|
for (i = 0; (i < iovcnt) && (copied < buflen); i++) {
|
|
u16_t len_left = buflen - copied;
|
|
if (iov[i].iov_len > len_left) {
|
|
copylen = len_left;
|
|
} else {
|
|
copylen = (u16_t)iov[i].iov_len;
|
|
}
|
|
|
|
/* copy the contents of the received buffer into
|
|
the supplied memory buffer */
|
|
pbuf_copy_partial(buf->p, (u8_t*)iov[i].iov_base, copylen, copied);
|
|
copied += copylen;
|
|
}
|
|
|
|
/* Check to see from where the data was.*/
|
|
#if !SOCKETS_DEBUG
|
|
if (from && fromlen)
|
|
#endif /* !SOCKETS_DEBUG */
|
|
{
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom_udp_raw(%d): addr=", dbg_s));
|
|
ip_addr_debug_print(SOCKETS_DEBUG, netbuf_fromaddr(buf));
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F" len=%d\n", netbuf_fromport(buf), copied));
|
|
if (from && fromlen) {
|
|
lwip_sock_make_addr(sock->conn, netbuf_fromaddr(buf), netbuf_fromport(buf), from, fromlen);
|
|
}
|
|
}
|
|
|
|
/* If we don't peek the incoming message: zero lastdata pointer and free the netbuf */
|
|
if ((flags & MSG_PEEK) == 0) {
|
|
sock->lastdata.netbuf = NULL;
|
|
netbuf_delete(buf);
|
|
}
|
|
if (datagram_len) {
|
|
*datagram_len = buflen;
|
|
}
|
|
return ERR_OK;
|
|
}
|
|
|
|
int
|
|
lwip_recvfrom(int s, void *mem, size_t len, int flags,
|
|
struct sockaddr *from, socklen_t *fromlen)
|
|
{
|
|
struct lwip_sock *sock;
|
|
int ret;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d, %p, %"SZT_F", 0x%x, ..)\n", s, mem, len, flags));
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) {
|
|
ret = lwip_recv_tcp(sock, mem, len, flags);
|
|
lwip_recv_tcp_from(sock, from, fromlen, "lwip_recvfrom", s, ret);
|
|
done_socket(sock);
|
|
return ret;
|
|
} else {
|
|
u16_t datagram_len = 0;
|
|
struct iovec vec;
|
|
err_t err;
|
|
vec.iov_base = mem;
|
|
vec.iov_len = len;
|
|
err = lwip_recvfrom_udp_raw(sock, flags, &vec, 1, from, fromlen, &datagram_len, s);
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom[UDP/RAW](%d): buf == NULL, error is \"%s\"!\n",
|
|
s, lwip_strerr(err)));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
ret = len < datagram_len ? len :datagram_len;
|
|
}
|
|
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
lwip_read(int s, void *mem, size_t len)
|
|
{
|
|
return lwip_recvfrom(s, mem, len, 0, NULL, NULL);
|
|
}
|
|
|
|
int
|
|
lwip_recv(int s, void *mem, size_t len, int flags)
|
|
{
|
|
return lwip_recvfrom(s, mem, len, flags, NULL, NULL);
|
|
}
|
|
|
|
int
|
|
lwip_recvmsg(int s, struct msghdr *message, int flags)
|
|
{
|
|
struct lwip_sock *sock;
|
|
int recv_flags = flags;
|
|
int buflen, i;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvmsg(%d, message=%p, flags=0x%x)\n", s, (void*)message, flags));
|
|
LWIP_ERROR("lwip_recvmsg: invalid message pointer", message != NULL, return ERR_ARG;);
|
|
LWIP_ERROR("lwip_recvmsg: unsupported flags", ((flags == 0) || (flags == MSG_PEEK)),
|
|
set_errno(EOPNOTSUPP); return -1;);
|
|
|
|
if ((message->msg_iovlen <= 0) || (message->msg_iovlen > IOV_MAX)) {
|
|
set_errno(EMSGSIZE);
|
|
return -1;
|
|
}
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
/* check for valid vectors */
|
|
buflen = 0;
|
|
for (i = 0; i < message->msg_iovlen; i++) {
|
|
if ((message->msg_iov[i].iov_base == NULL) || (message->msg_iov[i].iov_len == 0) ||
|
|
((int)(buflen + message->msg_iov[i].iov_len) <= 0)) {
|
|
sock_set_errno(sock, ERR_VAL);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
buflen += message->msg_iov[i].iov_len;
|
|
}
|
|
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) {
|
|
#if LWIP_TCP
|
|
message->msg_flags = 0;
|
|
/* recv the data */
|
|
buflen = 0;
|
|
for (i = 0; i < message->msg_iovlen; i++) {
|
|
/* try to receive into this vector's buffer */
|
|
int recvd_local = lwip_recv_tcp(sock, message->msg_iov[i].iov_base, message->msg_iov[i].iov_len, recv_flags);
|
|
if (recvd_local > 0) {
|
|
/* sum up received bytes */
|
|
buflen += recvd_local;
|
|
}
|
|
if ((recvd_local < 0) || (recvd_local < (int)message->msg_iov[i].iov_len) ||
|
|
(flags & MSG_PEEK)) {
|
|
/* returned prematurely (or peeking, which might actually be limitated to the first iov) */
|
|
if (buflen <= 0) {
|
|
/* nothing received at all, propagate the error */
|
|
buflen = recvd_local;
|
|
}
|
|
break;
|
|
}
|
|
/* while MSG_DONTWAIT is not supported for this function, we pass it to
|
|
lwip_recv_tcp() to prevent waiting for more data */
|
|
recv_flags |= MSG_DONTWAIT;
|
|
}
|
|
if (buflen > 0) {
|
|
/* reset socket error since we have received something */
|
|
sock_set_errno(sock, 0);
|
|
}
|
|
/* " If the socket is connected, the msg_name and msg_namelen members shall be ignored." */
|
|
done_socket(sock);
|
|
return buflen;
|
|
#else /* LWIP_TCP */
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* LWIP_TCP */
|
|
}
|
|
/* else, UDP and RAW NETCONNs */
|
|
#if LWIP_UDP || LWIP_RAW
|
|
{
|
|
u16_t datagram_len = 0;
|
|
err_t err;
|
|
err = lwip_recvfrom_udp_raw(sock, flags, message->msg_iov, message->msg_iovlen,
|
|
(struct sockaddr *)message->msg_name, &message->msg_namelen, &datagram_len, s);
|
|
if (err != ERR_OK) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvmsg[UDP/RAW](%d): buf == NULL, error is \"%s\"!\n",
|
|
s, lwip_strerr(err)));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
message->msg_flags = 0;
|
|
if (datagram_len > buflen) {
|
|
message->msg_flags |= MSG_TRUNC;
|
|
}
|
|
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return (int)datagram_len;
|
|
}
|
|
#else /* LWIP_UDP || LWIP_RAW */
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* LWIP_UDP || LWIP_RAW */
|
|
}
|
|
|
|
int
|
|
lwip_send(int s, const void *data, size_t size, int flags)
|
|
{
|
|
struct lwip_sock *sock;
|
|
err_t err;
|
|
u8_t write_flags;
|
|
size_t written;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d, data=%p, size=%"SZT_F", flags=0x%x)\n",
|
|
s, data, size, flags));
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
#if (LWIP_UDP || LWIP_RAW)
|
|
done_socket(sock);
|
|
return lwip_sendto(s, data, size, flags, NULL, 0);
|
|
#else /* (LWIP_UDP || LWIP_RAW) */
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* (LWIP_UDP || LWIP_RAW) */
|
|
}
|
|
|
|
write_flags = NETCONN_COPY |
|
|
((flags & MSG_MORE) ? NETCONN_MORE : 0) |
|
|
((flags & MSG_DONTWAIT) ? NETCONN_DONTBLOCK : 0);
|
|
written = 0;
|
|
err = netconn_write_partly(sock->conn, data, size, write_flags, &written);
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) err=%d written=%"SZT_F"\n", s, err, written));
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return (err == ERR_OK ? (int)written : -1);
|
|
}
|
|
|
|
int
|
|
lwip_sendmsg(int s, const struct msghdr *msg, int flags)
|
|
{
|
|
struct lwip_sock *sock;
|
|
int i;
|
|
#if LWIP_TCP
|
|
u8_t write_flags;
|
|
size_t written;
|
|
#endif
|
|
int size = 0;
|
|
err_t err = ERR_OK;
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
LWIP_ERROR("lwip_sendmsg: invalid msghdr", msg != NULL,
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
LWIP_ERROR("lwip_sendmsg: invalid msghdr iov", msg->msg_iov != NULL,
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
LWIP_ERROR("lwip_sendmsg: maximum iovs exceeded", (msg->msg_iovlen > 0) && (msg->msg_iovlen <= IOV_MAX),
|
|
sock_set_errno(sock, EMSGSIZE); done_socket(sock); return -1;);
|
|
LWIP_ERROR("lwip_sendmsg: unsupported flags", ((flags == 0) || (flags == MSG_NOSIGNAL)),
|
|
sock_set_errno(sock, EOPNOTSUPP); done_socket(sock); return -1;);
|
|
|
|
LWIP_UNUSED_ARG(msg->msg_control);
|
|
LWIP_UNUSED_ARG(msg->msg_controllen);
|
|
LWIP_UNUSED_ARG(msg->msg_flags);
|
|
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) {
|
|
#if LWIP_TCP
|
|
write_flags = NETCONN_COPY |
|
|
((flags & MSG_MORE) ? NETCONN_MORE : 0) |
|
|
((flags & MSG_DONTWAIT) ? NETCONN_DONTBLOCK : 0);
|
|
|
|
written = 0;
|
|
err = netconn_write_vectors_partly(sock->conn, (struct netvector *)msg->msg_iov, (u16_t)msg->msg_iovlen, write_flags, &written);
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return (err == ERR_OK ? (int)written : -1);
|
|
#else /* LWIP_TCP */
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* LWIP_TCP */
|
|
}
|
|
/* else, UDP and RAW NETCONNs */
|
|
#if LWIP_UDP || LWIP_RAW
|
|
{
|
|
struct netbuf chain_buf;
|
|
|
|
LWIP_UNUSED_ARG(flags);
|
|
LWIP_ERROR("lwip_sendmsg: invalid msghdr name", (((msg->msg_name == NULL) && (msg->msg_namelen == 0)) ||
|
|
IS_SOCK_ADDR_LEN_VALID(msg->msg_namelen)) ,
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
|
|
/* initialize chain buffer with destination */
|
|
memset(&chain_buf, 0, sizeof(struct netbuf));
|
|
if (msg->msg_name) {
|
|
u16_t remote_port;
|
|
SOCKADDR_TO_IPADDR_PORT((const struct sockaddr *)msg->msg_name, &chain_buf.addr, remote_port);
|
|
netbuf_fromport(&chain_buf) = remote_port;
|
|
}
|
|
#if LWIP_NETIF_TX_SINGLE_PBUF
|
|
for (i = 0; i < msg->msg_iovlen; i++) {
|
|
size += msg->msg_iov[i].iov_len;
|
|
if ((msg->msg_iov[i].iov_len > INT_MAX) || (size < (int)msg->msg_iov[i].iov_len)) {
|
|
/* overflow */
|
|
goto sendmsg_emsgsize;
|
|
}
|
|
}
|
|
if (size > 0xFFFF) {
|
|
/* overflow */
|
|
goto sendmsg_emsgsize;
|
|
}
|
|
/* Allocate a new netbuf and copy the data into it. */
|
|
if (netbuf_alloc(&chain_buf, (u16_t)size) == NULL) {
|
|
err = ERR_MEM;
|
|
} else {
|
|
/* flatten the IO vectors */
|
|
size_t offset = 0;
|
|
for (i = 0; i < msg->msg_iovlen; i++) {
|
|
MEMCPY(&((u8_t*)chain_buf.p->payload)[offset], msg->msg_iov[i].iov_base, msg->msg_iov[i].iov_len);
|
|
offset += msg->msg_iov[i].iov_len;
|
|
}
|
|
#if LWIP_CHECKSUM_ON_COPY
|
|
{
|
|
/* This can be improved by using LWIP_CHKSUM_COPY() and aggregating the checksum for each IO vector */
|
|
u16_t chksum = ~inet_chksum_pbuf(chain_buf.p);
|
|
netbuf_set_chksum(&chain_buf, chksum);
|
|
}
|
|
#endif /* LWIP_CHECKSUM_ON_COPY */
|
|
err = ERR_OK;
|
|
}
|
|
#else /* LWIP_NETIF_TX_SINGLE_PBUF */
|
|
/* create a chained netbuf from the IO vectors. NOTE: we assemble a pbuf chain
|
|
manually to avoid having to allocate, chain, and delete a netbuf for each iov */
|
|
for (i = 0; i < msg->msg_iovlen; i++) {
|
|
struct pbuf *p;
|
|
if (msg->msg_iov[i].iov_len > 0xFFFF) {
|
|
/* overflow */
|
|
goto sendmsg_emsgsize;
|
|
}
|
|
p = pbuf_alloc(PBUF_TRANSPORT, 0, PBUF_REF);
|
|
if (p == NULL) {
|
|
err = ERR_MEM; /* let netbuf_delete() cleanup chain_buf */
|
|
break;
|
|
}
|
|
p->payload = msg->msg_iov[i].iov_base;
|
|
p->len = p->tot_len = (u16_t)msg->msg_iov[i].iov_len;
|
|
/* netbuf empty, add new pbuf */
|
|
if (chain_buf.p == NULL) {
|
|
chain_buf.p = chain_buf.ptr = p;
|
|
/* add pbuf to existing pbuf chain */
|
|
} else {
|
|
if (chain_buf.p->tot_len + p->len > 0xffff) {
|
|
/* overflow */
|
|
pbuf_free(p);
|
|
goto sendmsg_emsgsize;
|
|
}
|
|
pbuf_cat(chain_buf.p, p);
|
|
}
|
|
}
|
|
/* save size of total chain */
|
|
if (err == ERR_OK) {
|
|
size = netbuf_len(&chain_buf);
|
|
}
|
|
#endif /* LWIP_NETIF_TX_SINGLE_PBUF */
|
|
|
|
if (err == ERR_OK) {
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Unmap IPv4 mapped IPv6 addresses */
|
|
if (IP_IS_V6_VAL(chain_buf.addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&chain_buf.addr))) {
|
|
unmap_ipv4_mapped_ipv6(ip_2_ip4(&chain_buf.addr), ip_2_ip6(&chain_buf.addr));
|
|
IP_SET_TYPE_VAL(chain_buf.addr, IPADDR_TYPE_V4);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
/* send the data */
|
|
err = netconn_send(sock->conn, &chain_buf);
|
|
}
|
|
|
|
/* deallocated the buffer */
|
|
netbuf_free(&chain_buf);
|
|
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return (err == ERR_OK ? size : -1);
|
|
sendmsg_emsgsize:
|
|
sock_set_errno(sock, EMSGSIZE);
|
|
netbuf_free(&chain_buf);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
#else /* LWIP_UDP || LWIP_RAW */
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* LWIP_UDP || LWIP_RAW */
|
|
}
|
|
|
|
int
|
|
lwip_sendto(int s, const void *data, size_t size, int flags,
|
|
const struct sockaddr *to, socklen_t tolen)
|
|
{
|
|
struct lwip_sock *sock;
|
|
err_t err;
|
|
u16_t short_size;
|
|
u16_t remote_port;
|
|
struct netbuf buf;
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) {
|
|
#if LWIP_TCP
|
|
done_socket(sock);
|
|
return lwip_send(s, data, size, flags);
|
|
#else /* LWIP_TCP */
|
|
LWIP_UNUSED_ARG(flags);
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG));
|
|
done_socket(sock);
|
|
return -1;
|
|
#endif /* LWIP_TCP */
|
|
}
|
|
|
|
if (size > 0xFFFF) {
|
|
/* cannot fit into one datagram (at least for us) */
|
|
sock_set_errno(sock, EMSGSIZE);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
short_size = (u16_t)size;
|
|
LWIP_ERROR("lwip_sendto: invalid address", (((to == NULL) && (tolen == 0)) ||
|
|
(IS_SOCK_ADDR_LEN_VALID(tolen) &&
|
|
IS_SOCK_ADDR_TYPE_VALID(to) && IS_SOCK_ADDR_ALIGNED(to))),
|
|
sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
|
|
LWIP_UNUSED_ARG(tolen);
|
|
|
|
/* initialize a buffer */
|
|
buf.p = buf.ptr = NULL;
|
|
#if LWIP_CHECKSUM_ON_COPY
|
|
buf.flags = 0;
|
|
#endif /* LWIP_CHECKSUM_ON_COPY */
|
|
if (to) {
|
|
SOCKADDR_TO_IPADDR_PORT(to, &buf.addr, remote_port);
|
|
} else {
|
|
remote_port = 0;
|
|
ip_addr_set_any(NETCONNTYPE_ISIPV6(netconn_type(sock->conn)), &buf.addr);
|
|
}
|
|
netbuf_fromport(&buf) = remote_port;
|
|
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_sendto(%d, data=%p, short_size=%"U16_F", flags=0x%x to=",
|
|
s, data, short_size, flags));
|
|
ip_addr_debug_print(SOCKETS_DEBUG, &buf.addr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F"\n", remote_port));
|
|
|
|
/* make the buffer point to the data that should be sent */
|
|
#if LWIP_NETIF_TX_SINGLE_PBUF
|
|
/* Allocate a new netbuf and copy the data into it. */
|
|
if (netbuf_alloc(&buf, short_size) == NULL) {
|
|
err = ERR_MEM;
|
|
} else {
|
|
#if LWIP_CHECKSUM_ON_COPY
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_RAW) {
|
|
u16_t chksum = LWIP_CHKSUM_COPY(buf.p->payload, data, short_size);
|
|
netbuf_set_chksum(&buf, chksum);
|
|
} else
|
|
#endif /* LWIP_CHECKSUM_ON_COPY */
|
|
{
|
|
MEMCPY(buf.p->payload, data, short_size);
|
|
}
|
|
err = ERR_OK;
|
|
}
|
|
#else /* LWIP_NETIF_TX_SINGLE_PBUF */
|
|
err = netbuf_ref(&buf, data, short_size);
|
|
#endif /* LWIP_NETIF_TX_SINGLE_PBUF */
|
|
if (err == ERR_OK) {
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Unmap IPv4 mapped IPv6 addresses */
|
|
if (IP_IS_V6_VAL(buf.addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&buf.addr))) {
|
|
unmap_ipv4_mapped_ipv6(ip_2_ip4(&buf.addr), ip_2_ip6(&buf.addr));
|
|
IP_SET_TYPE_VAL(buf.addr, IPADDR_TYPE_V4);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
/* send the data */
|
|
err = netconn_send(sock->conn, &buf);
|
|
}
|
|
|
|
/* deallocated the buffer */
|
|
netbuf_free(&buf);
|
|
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return (err == ERR_OK ? short_size : -1);
|
|
}
|
|
|
|
int
|
|
lwip_socket(int domain, int type, int protocol)
|
|
{
|
|
struct netconn *conn;
|
|
int i;
|
|
|
|
LWIP_UNUSED_ARG(domain); /* @todo: check this */
|
|
|
|
/* create a netconn */
|
|
switch (type) {
|
|
case SOCK_RAW:
|
|
conn = netconn_new_with_proto_and_callback(DOMAIN_TO_NETCONN_TYPE(domain, NETCONN_RAW),
|
|
(u8_t)protocol, DEFAULT_SOCKET_EVENTCB);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_RAW, %d) = ",
|
|
domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
|
|
break;
|
|
case SOCK_DGRAM:
|
|
conn = netconn_new_with_callback(DOMAIN_TO_NETCONN_TYPE(domain,
|
|
((protocol == IPPROTO_UDPLITE) ? NETCONN_UDPLITE : NETCONN_UDP)) ,
|
|
DEFAULT_SOCKET_EVENTCB);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_DGRAM, %d) = ",
|
|
domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
|
|
break;
|
|
case SOCK_STREAM:
|
|
conn = netconn_new_with_callback(DOMAIN_TO_NETCONN_TYPE(domain, NETCONN_TCP), DEFAULT_SOCKET_EVENTCB);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_STREAM, %d) = ",
|
|
domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%d, %d/UNKNOWN, %d) = -1\n",
|
|
domain, type, protocol));
|
|
set_errno(EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (!conn) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("-1 / ENOBUFS (could not create netconn)\n"));
|
|
set_errno(ENOBUFS);
|
|
return -1;
|
|
}
|
|
|
|
i = alloc_socket(conn, 0);
|
|
|
|
if (i == -1) {
|
|
netconn_delete(conn);
|
|
set_errno(ENFILE);
|
|
return -1;
|
|
}
|
|
conn->socket = i;
|
|
done_socket(&sockets[i - LWIP_SOCKET_OFFSET]);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i));
|
|
set_errno(0);
|
|
return i;
|
|
}
|
|
|
|
int
|
|
lwip_write(int s, const void *data, size_t size)
|
|
{
|
|
return lwip_send(s, data, size, 0);
|
|
}
|
|
|
|
int
|
|
lwip_writev(int s, const struct iovec *iov, int iovcnt)
|
|
{
|
|
struct msghdr msg;
|
|
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
/* Hack: we have to cast via number to cast from 'const' pointer to non-const.
|
|
Blame the opengroup standard for this inconsistency. */
|
|
msg.msg_iov = LWIP_CONST_CAST(struct iovec *, iov);
|
|
msg.msg_iovlen = iovcnt;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
return lwip_sendmsg(s, &msg, 0);
|
|
}
|
|
|
|
#if LWIP_SOCKET_SELECT
|
|
/**
|
|
* Go through the readset and writeset lists and see which socket of the sockets
|
|
* set in the sets has events. On return, readset, writeset and exceptset have
|
|
* the sockets enabled that had events.
|
|
*
|
|
* @param maxfdp1 the highest socket index in the sets
|
|
* @param readset_in set of sockets to check for read events
|
|
* @param writeset_in set of sockets to check for write events
|
|
* @param exceptset_in set of sockets to check for error events
|
|
* @param readset_out set of sockets that had read events
|
|
* @param writeset_out set of sockets that had write events
|
|
* @param exceptset_out set os sockets that had error events
|
|
* @return number of sockets that had events (read/write/exception) (>= 0)
|
|
*/
|
|
static int
|
|
lwip_selscan(int maxfdp1, fd_set *readset_in, fd_set *writeset_in, fd_set *exceptset_in,
|
|
fd_set *readset_out, fd_set *writeset_out, fd_set *exceptset_out)
|
|
{
|
|
int i, nready = 0;
|
|
fd_set lreadset, lwriteset, lexceptset;
|
|
struct lwip_sock *sock;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
|
|
FD_ZERO(&lreadset);
|
|
FD_ZERO(&lwriteset);
|
|
FD_ZERO(&lexceptset);
|
|
|
|
/* Go through each socket in each list to count number of sockets which
|
|
currently match */
|
|
for (i = LWIP_SOCKET_OFFSET; i < maxfdp1; i++) {
|
|
/* if this FD is not in the set, continue */
|
|
if (!(readset_in && FD_ISSET(i, readset_in)) &&
|
|
!(writeset_in && FD_ISSET(i, writeset_in)) &&
|
|
!(exceptset_in && FD_ISSET(i, exceptset_in))) {
|
|
continue;
|
|
}
|
|
/* First get the socket's status (protected)... */
|
|
SYS_ARCH_PROTECT(lev);
|
|
sock = tryget_socket_unconn(i);
|
|
if (sock != NULL) {
|
|
void* lastdata = sock->lastdata.pbuf;
|
|
s16_t rcvevent = sock->rcvevent;
|
|
u16_t sendevent = sock->sendevent;
|
|
u16_t errevent = sock->errevent;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
|
|
/* ... then examine it: */
|
|
/* See if netconn of this socket is ready for read */
|
|
if (readset_in && FD_ISSET(i, readset_in) && ((lastdata != NULL) || (rcvevent > 0))) {
|
|
FD_SET(i, &lreadset);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for reading\n", i));
|
|
nready++;
|
|
}
|
|
/* See if netconn of this socket is ready for write */
|
|
if (writeset_in && FD_ISSET(i, writeset_in) && (sendevent != 0)) {
|
|
FD_SET(i, &lwriteset);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for writing\n", i));
|
|
nready++;
|
|
}
|
|
/* See if netconn of this socket had an error */
|
|
if (exceptset_in && FD_ISSET(i, exceptset_in) && (errevent != 0)) {
|
|
FD_SET(i, &lexceptset);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for exception\n", i));
|
|
nready++;
|
|
}
|
|
done_socket(sock);
|
|
} else {
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
/* no a valid open socket */
|
|
return -1;
|
|
}
|
|
}
|
|
/* copy local sets to the ones provided as arguments */
|
|
*readset_out = lreadset;
|
|
*writeset_out = lwriteset;
|
|
*exceptset_out = lexceptset;
|
|
|
|
LWIP_ASSERT("nready >= 0", nready >= 0);
|
|
return nready;
|
|
}
|
|
|
|
#if LWIP_NETCONN_FULLDUPLEX
|
|
/* Mark all of the set sockets in one of the three fdsets passed to select as used.
|
|
* All sockets are marked (and later unmarked), whether they are open or not.
|
|
* This is OK as lwip_selscan aborts select when non-open sockets are found.
|
|
*/
|
|
static void
|
|
lwip_select_inc_sockets_used_set(int maxfdp, fd_set *fdset, fd_set *used_sockets)
|
|
{
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
if (fdset) {
|
|
int i;
|
|
for (i = LWIP_SOCKET_OFFSET; i < maxfdp; i++) {
|
|
/* if this FD is in the set, lock it (unless already done) */
|
|
if (FD_ISSET(i, fdset) && !FD_ISSET(i, used_sockets)) {
|
|
struct lwip_sock *sock;
|
|
SYS_ARCH_PROTECT(lev);
|
|
sock = tryget_socket_unconn(i);
|
|
if (sock != NULL) {
|
|
sock_inc_used(sock);
|
|
FD_SET(i, used_sockets);
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Mark all sockets passed to select as used to prevent them from being freed
|
|
* from other threads while select is running.
|
|
* Marked sockets are added to 'used_sockets' to mark them only once an be able
|
|
* to unmark them correctly.
|
|
*/
|
|
static void
|
|
lwip_select_inc_sockets_used(int maxfdp, fd_set *fdset1, fd_set *fdset2, fd_set *fdset3, fd_set *used_sockets)
|
|
{
|
|
FD_ZERO(used_sockets);
|
|
lwip_select_inc_sockets_used_set(maxfdp, fdset1, used_sockets);
|
|
lwip_select_inc_sockets_used_set(maxfdp, fdset2, used_sockets);
|
|
lwip_select_inc_sockets_used_set(maxfdp, fdset3, used_sockets);
|
|
}
|
|
|
|
/* Let go all sockets that were marked as used when starting select */
|
|
static void
|
|
lwip_select_dec_sockets_used(int maxfdp, fd_set *used_sockets)
|
|
{
|
|
int i;
|
|
for (i = LWIP_SOCKET_OFFSET; i < maxfdp; i++) {
|
|
/* if this FD is not in the set, continue */
|
|
if (FD_ISSET(i, used_sockets)) {
|
|
struct lwip_sock *sock = tryget_socket_unconn(i);
|
|
LWIP_ASSERT("socket gone at the end of select", sock != NULL);
|
|
if (sock != NULL) {
|
|
done_socket(sock);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#else /* LWIP_NETCONN_FULLDUPLEX */
|
|
#define lwip_select_inc_sockets_used(maxfdp1, readset, writeset, exceptset, used_sockets)
|
|
#define lwip_select_dec_sockets_used(maxfdp1, used_sockets)
|
|
#endif /* LWIP_NETCONN_FULLDUPLEX */
|
|
|
|
int
|
|
lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
|
|
struct timeval *timeout)
|
|
{
|
|
u32_t waitres = 0;
|
|
int nready;
|
|
fd_set lreadset, lwriteset, lexceptset;
|
|
u32_t msectimeout;
|
|
struct lwip_select_cb select_cb;
|
|
int i;
|
|
int maxfdp2;
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
int waited = 0;
|
|
#endif
|
|
#if LWIP_NETCONN_FULLDUPLEX
|
|
fd_set used_sockets;
|
|
#endif
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select(%d, %p, %p, %p, tvsec=%"S32_F" tvusec=%"S32_F")\n",
|
|
maxfdp1, (void *)readset, (void *) writeset, (void *) exceptset,
|
|
timeout ? (s32_t)timeout->tv_sec : (s32_t)-1,
|
|
timeout ? (s32_t)timeout->tv_usec : (s32_t)-1));
|
|
|
|
if ((maxfdp1 < 0) || (maxfdp1 > (FD_SETSIZE + LWIP_SOCKET_OFFSET))) {
|
|
set_errno(EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
lwip_select_inc_sockets_used(maxfdp1, readset, writeset, exceptset, &used_sockets);
|
|
|
|
/* Go through each socket in each list to count number of sockets which
|
|
currently match */
|
|
nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset);
|
|
|
|
if (nready < 0) {
|
|
set_errno(EBADF);
|
|
return -1;
|
|
}
|
|
|
|
/* If we don't have any current events, then suspend if we are supposed to */
|
|
if (!nready) {
|
|
if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0) {
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout, returning 0\n"));
|
|
/* This is OK as the local fdsets are empty and nready is zero,
|
|
or we would have returned earlier. */
|
|
goto return_copy_fdsets;
|
|
}
|
|
|
|
/* None ready: add our semaphore to list:
|
|
We don't actually need any dynamic memory. Our entry on the
|
|
list is only valid while we are in this function, so it's ok
|
|
to use local variables. */
|
|
|
|
select_cb.next = NULL;
|
|
select_cb.prev = NULL;
|
|
select_cb.readset = readset;
|
|
select_cb.writeset = writeset;
|
|
select_cb.exceptset = exceptset;
|
|
select_cb.sem_signalled = 0;
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
select_cb.sem = LWIP_NETCONN_THREAD_SEM_GET();
|
|
#else /* LWIP_NETCONN_SEM_PER_THREAD */
|
|
if (sys_sem_new(&select_cb.sem, 0) != ERR_OK) {
|
|
/* failed to create semaphore */
|
|
set_errno(ENOMEM);
|
|
lwip_select_dec_sockets_used(maxfdp1, &used_sockets);
|
|
return -1;
|
|
}
|
|
#endif /* LWIP_NETCONN_SEM_PER_THREAD */
|
|
|
|
/* Protect the select_cb_list */
|
|
SYS_ARCH_PROTECT(lev);
|
|
|
|
/* Put this select_cb on top of list */
|
|
select_cb.next = select_cb_list;
|
|
if (select_cb_list != NULL) {
|
|
select_cb_list->prev = &select_cb;
|
|
}
|
|
select_cb_list = &select_cb;
|
|
/* Increasing this counter tells event_callback that the list has changed. */
|
|
select_cb_ctr++;
|
|
|
|
/* Now we can safely unprotect */
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
|
|
/* Increase select_waiting for each socket we are interested in */
|
|
maxfdp2 = maxfdp1;
|
|
for (i = LWIP_SOCKET_OFFSET; i < maxfdp1; i++) {
|
|
if ((readset && FD_ISSET(i, readset)) ||
|
|
(writeset && FD_ISSET(i, writeset)) ||
|
|
(exceptset && FD_ISSET(i, exceptset))) {
|
|
struct lwip_sock *sock;
|
|
SYS_ARCH_PROTECT(lev);
|
|
sock = tryget_socket_unconn(i);
|
|
if (sock != NULL) {
|
|
sock->select_waiting++;
|
|
LWIP_ASSERT("sock->select_waiting > 0", sock->select_waiting > 0);
|
|
done_socket(sock);
|
|
} else {
|
|
/* Not a valid socket */
|
|
nready = -1;
|
|
maxfdp2 = i;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
break;
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
}
|
|
|
|
if (nready >= 0) {
|
|
/* Call lwip_selscan again: there could have been events between
|
|
the last scan (without us on the list) and putting us on the list! */
|
|
nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset);
|
|
if (!nready) {
|
|
/* Still none ready, just wait to be woken */
|
|
if (timeout == 0) {
|
|
/* Wait forever */
|
|
msectimeout = 0;
|
|
} else {
|
|
msectimeout = ((timeout->tv_sec * 1000) + ((timeout->tv_usec + 500)/1000));
|
|
if (msectimeout == 0) {
|
|
/* Wait 1ms at least (0 means wait forever) */
|
|
msectimeout = 1;
|
|
}
|
|
}
|
|
|
|
waitres = sys_arch_sem_wait(SELECT_SEM_PTR(select_cb.sem), msectimeout);
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
waited = 1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Decrease select_waiting for each socket we are interested in */
|
|
for (i = LWIP_SOCKET_OFFSET; i < maxfdp2; i++) {
|
|
if ((readset && FD_ISSET(i, readset)) ||
|
|
(writeset && FD_ISSET(i, writeset)) ||
|
|
(exceptset && FD_ISSET(i, exceptset))) {
|
|
struct lwip_sock *sock;
|
|
SYS_ARCH_PROTECT(lev);
|
|
sock = tryget_socket_unconn(i);
|
|
if (sock != NULL) {
|
|
/* for now, handle select_waiting==0... */
|
|
LWIP_ASSERT("sock->select_waiting > 0", sock->select_waiting > 0);
|
|
if (sock->select_waiting > 0) {
|
|
sock->select_waiting--;
|
|
}
|
|
done_socket(sock);
|
|
} else {
|
|
/* Not a valid socket */
|
|
nready = -1;
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
}
|
|
/* Take us off the list */
|
|
SYS_ARCH_PROTECT(lev);
|
|
if (select_cb.next != NULL) {
|
|
select_cb.next->prev = select_cb.prev;
|
|
}
|
|
if (select_cb_list == &select_cb) {
|
|
LWIP_ASSERT("select_cb.prev == NULL", select_cb.prev == NULL);
|
|
select_cb_list = select_cb.next;
|
|
} else {
|
|
LWIP_ASSERT("select_cb.prev != NULL", select_cb.prev != NULL);
|
|
select_cb.prev->next = select_cb.next;
|
|
}
|
|
/* Increasing this counter tells event_callback that the list has changed. */
|
|
select_cb_ctr++;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
if (select_cb.sem_signalled && (!waited || (waitres == SYS_ARCH_TIMEOUT))) {
|
|
/* don't leave the thread-local semaphore signalled */
|
|
sys_arch_sem_wait(select_cb.sem, 1);
|
|
}
|
|
#else /* LWIP_NETCONN_SEM_PER_THREAD */
|
|
sys_sem_free(&select_cb.sem);
|
|
#endif /* LWIP_NETCONN_SEM_PER_THREAD */
|
|
|
|
if (nready < 0) {
|
|
/* This happens when a socket got closed while waiting */
|
|
set_errno(EBADF);
|
|
lwip_select_dec_sockets_used(maxfdp1, &used_sockets);
|
|
return -1;
|
|
}
|
|
|
|
if (waitres == SYS_ARCH_TIMEOUT) {
|
|
/* Timeout */
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: timeout expired\n"));
|
|
/* This is OK as the local fdsets are empty and nready is zero,
|
|
or we would have returned earlier. */
|
|
goto return_copy_fdsets;
|
|
}
|
|
|
|
/* See what's set */
|
|
nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset);
|
|
}
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready));
|
|
return_copy_fdsets:
|
|
lwip_select_dec_sockets_used(maxfdp1, &used_sockets);
|
|
set_errno(0);
|
|
if (readset) {
|
|
*readset = lreadset;
|
|
}
|
|
if (writeset) {
|
|
*writeset = lwriteset;
|
|
}
|
|
if (exceptset) {
|
|
*exceptset = lexceptset;
|
|
}
|
|
return nready;
|
|
}
|
|
|
|
/**
|
|
* Callback registered in the netconn layer for each socket-netconn.
|
|
* Processes recvevent (data available) and wakes up tasks waiting for select.
|
|
*/
|
|
static void
|
|
event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
|
|
{
|
|
int s;
|
|
struct lwip_sock *sock;
|
|
struct lwip_select_cb *scb;
|
|
int last_select_cb_ctr;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
|
|
LWIP_UNUSED_ARG(len);
|
|
|
|
/* Get socket */
|
|
if (conn) {
|
|
s = conn->socket;
|
|
if (s < 0) {
|
|
/* Data comes in right away after an accept, even though
|
|
* the server task might not have created a new socket yet.
|
|
* Just count down (or up) if that's the case and we
|
|
* will use the data later. Note that only receive events
|
|
* can happen before the new socket is set up. */
|
|
SYS_ARCH_PROTECT(lev);
|
|
if (conn->socket < 0) {
|
|
if (evt == NETCONN_EVT_RCVPLUS) {
|
|
/* conn->socket is -1 on initialization
|
|
lwip_accept adjusts sock->recvevent if conn->socket < -1 */
|
|
conn->socket--;
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
return;
|
|
}
|
|
s = conn->socket;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
}
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return;
|
|
}
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
SYS_ARCH_PROTECT(lev);
|
|
/* Set event as required */
|
|
switch (evt) {
|
|
case NETCONN_EVT_RCVPLUS:
|
|
sock->rcvevent++;
|
|
break;
|
|
case NETCONN_EVT_RCVMINUS:
|
|
sock->rcvevent--;
|
|
break;
|
|
case NETCONN_EVT_SENDPLUS:
|
|
sock->sendevent = 1;
|
|
break;
|
|
case NETCONN_EVT_SENDMINUS:
|
|
sock->sendevent = 0;
|
|
break;
|
|
case NETCONN_EVT_ERROR:
|
|
sock->errevent = 1;
|
|
break;
|
|
default:
|
|
LWIP_ASSERT("unknown event", 0);
|
|
break;
|
|
}
|
|
|
|
if (sock->select_waiting == 0) {
|
|
/* noone is waiting for this socket, no need to check select_cb_list */
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
done_socket(sock);
|
|
return;
|
|
}
|
|
|
|
/* Now decide if anyone is waiting for this socket */
|
|
/* NOTE: This code goes through the select_cb_list list multiple times
|
|
ONLY IF a select was actually waiting. We go through the list the number
|
|
of waiting select calls + 1. This list is expected to be small. */
|
|
|
|
/* At this point, SYS_ARCH is still protected! */
|
|
again:
|
|
for (scb = select_cb_list; scb != NULL; scb = scb->next) {
|
|
/* remember the state of select_cb_list to detect changes */
|
|
last_select_cb_ctr = select_cb_ctr;
|
|
if (scb->sem_signalled == 0) {
|
|
/* semaphore not signalled yet */
|
|
int do_signal = 0;
|
|
/* Test this select call for our socket */
|
|
if (sock->rcvevent > 0) {
|
|
if (scb->readset && FD_ISSET(s, scb->readset)) {
|
|
do_signal = 1;
|
|
}
|
|
}
|
|
if (sock->sendevent != 0) {
|
|
if (!do_signal && scb->writeset && FD_ISSET(s, scb->writeset)) {
|
|
do_signal = 1;
|
|
}
|
|
}
|
|
if (sock->errevent != 0) {
|
|
if (!do_signal && scb->exceptset && FD_ISSET(s, scb->exceptset)) {
|
|
do_signal = 1;
|
|
}
|
|
}
|
|
if (do_signal) {
|
|
scb->sem_signalled = 1;
|
|
/* Don't call SYS_ARCH_UNPROTECT() before signaling the semaphore, as this might
|
|
lead to the select thread taking itself off the list, invalidating the semaphore. */
|
|
sys_sem_signal(SELECT_SEM_PTR(scb->sem));
|
|
}
|
|
}
|
|
/* unlock interrupts with each step */
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
/* this makes sure interrupt protection time is short */
|
|
SYS_ARCH_PROTECT(lev);
|
|
if (last_select_cb_ctr != select_cb_ctr) {
|
|
/* someone has changed select_cb_list, restart at the beginning */
|
|
goto again;
|
|
}
|
|
}
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
done_socket(sock);
|
|
}
|
|
#endif /* LWIP_SOCKET_SELECT */
|
|
|
|
/**
|
|
* Close one end of a full-duplex connection.
|
|
*/
|
|
int
|
|
lwip_shutdown(int s, int how)
|
|
{
|
|
struct lwip_sock *sock;
|
|
err_t err;
|
|
u8_t shut_rx = 0, shut_tx = 0;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how));
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (sock->conn != NULL) {
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
sock_set_errno(sock, EOPNOTSUPP);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
} else {
|
|
sock_set_errno(sock, ENOTCONN);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
if (how == SHUT_RD) {
|
|
shut_rx = 1;
|
|
} else if (how == SHUT_WR) {
|
|
shut_tx = 1;
|
|
} else if (how == SHUT_RDWR) {
|
|
shut_rx = 1;
|
|
shut_tx = 1;
|
|
} else {
|
|
sock_set_errno(sock, EINVAL);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
err = netconn_shutdown(sock->conn, shut_rx, shut_tx);
|
|
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return (err == ERR_OK ? 0 : -1);
|
|
}
|
|
|
|
static int
|
|
lwip_getaddrname(int s, struct sockaddr *name, socklen_t *namelen, u8_t local)
|
|
{
|
|
struct lwip_sock *sock;
|
|
union sockaddr_aligned saddr;
|
|
ip_addr_t naddr;
|
|
u16_t port;
|
|
err_t err;
|
|
|
|
sock = get_socket(s);
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
/* get the IP address and port */
|
|
err = netconn_getaddr(sock->conn, &naddr, &port, local);
|
|
if (err != ERR_OK) {
|
|
sock_set_errno(sock, err_to_errno(err));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
#if LWIP_IPV4 && LWIP_IPV6
|
|
/* Dual-stack: Map IPv4 addresses to IPv4 mapped IPv6 */
|
|
if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) &&
|
|
IP_IS_V4_VAL(naddr)) {
|
|
ip4_2_ipv4_mapped_ipv6(ip_2_ip6(&naddr), ip_2_ip4(&naddr));
|
|
IP_SET_TYPE_VAL(naddr, IPADDR_TYPE_V6);
|
|
}
|
|
#endif /* LWIP_IPV4 && LWIP_IPV6 */
|
|
|
|
IPADDR_PORT_TO_SOCKADDR(&saddr, &naddr, port);
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getaddrname(%d, addr=", s));
|
|
ip_addr_debug_print_val(SOCKETS_DEBUG, naddr);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", port));
|
|
|
|
if (*namelen > saddr.sa.sa_len) {
|
|
*namelen = saddr.sa.sa_len;
|
|
}
|
|
MEMCPY(name, &saddr, *namelen);
|
|
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
lwip_getpeername(int s, struct sockaddr *name, socklen_t *namelen)
|
|
{
|
|
return lwip_getaddrname(s, name, namelen, 0);
|
|
}
|
|
|
|
int
|
|
lwip_getsockname(int s, struct sockaddr *name, socklen_t *namelen)
|
|
{
|
|
return lwip_getaddrname(s, name, namelen, 1);
|
|
}
|
|
|
|
int
|
|
lwip_getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen)
|
|
{
|
|
int err;
|
|
struct lwip_sock *sock = get_socket(s);
|
|
#if !LWIP_TCPIP_CORE_LOCKING
|
|
err_t cberr;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_DECLARE(data);
|
|
#endif /* !LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if ((NULL == optval) || (NULL == optlen)) {
|
|
sock_set_errno(sock, EFAULT);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
#if LWIP_TCPIP_CORE_LOCKING
|
|
/* core-locking can just call the -impl function */
|
|
LOCK_TCPIP_CORE();
|
|
err = lwip_getsockopt_impl(s, level, optname, optval, optlen);
|
|
UNLOCK_TCPIP_CORE();
|
|
|
|
#else /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
#if LWIP_MPU_COMPATIBLE
|
|
/* MPU_COMPATIBLE copies the optval data, so check for max size here */
|
|
if (*optlen > LWIP_SETGETSOCKOPT_MAXOPTLEN) {
|
|
sock_set_errno(sock, ENOBUFS);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(data, sock);
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).s = s;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).level = level;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optname = optname;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optlen = *optlen;
|
|
#if !LWIP_MPU_COMPATIBLE
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optval.p = optval;
|
|
#endif /* !LWIP_MPU_COMPATIBLE */
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).err = 0;
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem = LWIP_NETCONN_THREAD_SEM_GET();
|
|
#else
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem = &sock->conn->op_completed;
|
|
#endif
|
|
cberr = tcpip_callback(lwip_getsockopt_callback, &LWIP_SETGETSOCKOPT_DATA_VAR_REF(data));
|
|
if (cberr != ERR_OK) {
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data);
|
|
sock_set_errno(sock, err_to_errno(cberr));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
sys_arch_sem_wait((sys_sem_t*)(LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem), 0);
|
|
|
|
/* write back optlen and optval */
|
|
*optlen = LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optlen;
|
|
#if LWIP_MPU_COMPATIBLE
|
|
MEMCPY(optval, LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optval,
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optlen);
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
|
|
/* maybe lwip_getsockopt_internal has changed err */
|
|
err = LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).err;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data);
|
|
#endif /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
sock_set_errno(sock, err);
|
|
done_socket(sock);
|
|
return err ? -1 : 0;
|
|
}
|
|
|
|
#if !LWIP_TCPIP_CORE_LOCKING
|
|
/** lwip_getsockopt_callback: only used without CORE_LOCKING
|
|
* to get into the tcpip_thread
|
|
*/
|
|
static void
|
|
lwip_getsockopt_callback(void *arg)
|
|
{
|
|
struct lwip_setgetsockopt_data *data;
|
|
LWIP_ASSERT("arg != NULL", arg != NULL);
|
|
data = (struct lwip_setgetsockopt_data*)arg;
|
|
|
|
data->err = lwip_getsockopt_impl(data->s, data->level, data->optname,
|
|
#if LWIP_MPU_COMPATIBLE
|
|
data->optval,
|
|
#else /* LWIP_MPU_COMPATIBLE */
|
|
data->optval.p,
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
&data->optlen);
|
|
|
|
sys_sem_signal((sys_sem_t*)(data->completed_sem));
|
|
}
|
|
#endif /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
/** lwip_getsockopt_impl: the actual implementation of getsockopt:
|
|
* same argument as lwip_getsockopt, either called directly or through callback
|
|
*/
|
|
static int
|
|
lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *optlen)
|
|
{
|
|
int err = 0;
|
|
struct lwip_sock *sock = tryget_socket(s);
|
|
if (!sock) {
|
|
return EBADF;
|
|
}
|
|
|
|
switch (level) {
|
|
|
|
/* Level: SOL_SOCKET */
|
|
case SOL_SOCKET:
|
|
switch (optname) {
|
|
|
|
#if LWIP_TCP
|
|
case SO_ACCEPTCONN:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, int);
|
|
if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_TCP) {
|
|
done_socket(sock);
|
|
return ENOPROTOOPT;
|
|
}
|
|
if ((sock->conn->pcb.tcp != NULL) && (sock->conn->pcb.tcp->state == LISTEN)) {
|
|
*(int*)optval = 1;
|
|
} else {
|
|
*(int*)optval = 0;
|
|
}
|
|
break;
|
|
#endif /* LWIP_TCP */
|
|
|
|
/* The option flags */
|
|
case SO_BROADCAST:
|
|
case SO_KEEPALIVE:
|
|
#if SO_REUSE
|
|
case SO_REUSEADDR:
|
|
#endif /* SO_REUSE */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, int);
|
|
*(int*)optval = ip_get_option(sock->conn->pcb.ip, optname);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, optname=0x%x, ..) = %s\n",
|
|
s, optname, (*(int*)optval?"on":"off")));
|
|
break;
|
|
|
|
case SO_TYPE:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, int);
|
|
switch (NETCONNTYPE_GROUP(netconn_type(sock->conn))) {
|
|
case NETCONN_RAW:
|
|
*(int*)optval = SOCK_RAW;
|
|
break;
|
|
case NETCONN_TCP:
|
|
*(int*)optval = SOCK_STREAM;
|
|
break;
|
|
case NETCONN_UDP:
|
|
*(int*)optval = SOCK_DGRAM;
|
|
break;
|
|
default: /* unrecognized socket type */
|
|
*(int*)optval = netconn_type(sock->conn);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG,
|
|
("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n",
|
|
s, *(int *)optval));
|
|
} /* switch (netconn_type(sock->conn)) */
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
|
|
case SO_ERROR:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN(sock, *optlen, int);
|
|
/* only overwrite ERR_OK or temporary errors */
|
|
if (((sock->err == 0) || (sock->err == EINPROGRESS)) && (sock->conn != NULL)) {
|
|
sock_set_errno(sock, err_to_errno(sock->conn->last_err));
|
|
}
|
|
*(int *)optval = sock->err;
|
|
sock->err = 0;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
|
|
#if LWIP_SO_SNDTIMEO
|
|
case SO_SNDTIMEO:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, LWIP_SO_SNDRCVTIMEO_OPTTYPE);
|
|
LWIP_SO_SNDRCVTIMEO_SET(optval, netconn_get_sendtimeout(sock->conn));
|
|
break;
|
|
#endif /* LWIP_SO_SNDTIMEO */
|
|
#if LWIP_SO_RCVTIMEO
|
|
case SO_RCVTIMEO:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, LWIP_SO_SNDRCVTIMEO_OPTTYPE);
|
|
LWIP_SO_SNDRCVTIMEO_SET(optval, netconn_get_recvtimeout(sock->conn));
|
|
break;
|
|
#endif /* LWIP_SO_RCVTIMEO */
|
|
#if LWIP_SO_RCVBUF
|
|
case SO_RCVBUF:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, int);
|
|
*(int *)optval = netconn_get_recvbufsize(sock->conn);
|
|
break;
|
|
#endif /* LWIP_SO_RCVBUF */
|
|
#if LWIP_SO_LINGER
|
|
case SO_LINGER:
|
|
{
|
|
s16_t conn_linger;
|
|
struct linger* linger = (struct linger*)optval;
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, struct linger);
|
|
conn_linger = sock->conn->linger;
|
|
if (conn_linger >= 0) {
|
|
linger->l_onoff = 1;
|
|
linger->l_linger = (int)conn_linger;
|
|
} else {
|
|
linger->l_onoff = 0;
|
|
linger->l_linger = 0;
|
|
}
|
|
}
|
|
break;
|
|
#endif /* LWIP_SO_LINGER */
|
|
#if LWIP_UDP
|
|
case SO_NO_CHECK:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_UDP);
|
|
#if LWIP_UDPLITE
|
|
if ((udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_UDPLITE) != 0) {
|
|
/* this flag is only available for UDP, not for UDP lite */
|
|
done_socket(sock);
|
|
return EAFNOSUPPORT;
|
|
}
|
|
#endif /* LWIP_UDPLITE */
|
|
*(int*)optval = (udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_NOCHKSUM) ? 1 : 0;
|
|
break;
|
|
#endif /* LWIP_UDP*/
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
|
|
/* Level: IPPROTO_IP */
|
|
case IPPROTO_IP:
|
|
switch (optname) {
|
|
case IP_TTL:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, int);
|
|
*(int*)optval = sock->conn->pcb.ip->ttl;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TTL) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
case IP_TOS:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, int);
|
|
*(int*)optval = sock->conn->pcb.ip->tos;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TOS) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
#if LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS
|
|
case IP_MULTICAST_TTL:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, u8_t);
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_UDP) {
|
|
done_socket(sock);
|
|
return ENOPROTOOPT;
|
|
}
|
|
*(u8_t*)optval = udp_get_multicast_ttl(sock->conn->pcb.udp);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_TTL) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
case IP_MULTICAST_IF:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, struct in_addr);
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_UDP) {
|
|
done_socket(sock);
|
|
return ENOPROTOOPT;
|
|
}
|
|
inet_addr_from_ip4addr((struct in_addr*)optval, udp_get_multicast_netif_addr(sock->conn->pcb.udp));
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_IF) = 0x%"X32_F"\n",
|
|
s, *(u32_t *)optval));
|
|
break;
|
|
case IP_MULTICAST_LOOP:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, u8_t);
|
|
if ((sock->conn->pcb.udp->flags & UDP_FLAGS_MULTICAST_LOOP) != 0) {
|
|
*(u8_t*)optval = 1;
|
|
} else {
|
|
*(u8_t*)optval = 0;
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_LOOP) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
#endif /* LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
|
|
#if LWIP_TCP
|
|
/* Level: IPPROTO_TCP */
|
|
case IPPROTO_TCP:
|
|
/* Special case: all IPPROTO_TCP option take an int */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_TCP);
|
|
if (sock->conn->pcb.tcp->state == LISTEN) {
|
|
done_socket(sock);
|
|
return EINVAL;
|
|
}
|
|
switch (optname) {
|
|
case TCP_NODELAY:
|
|
*(int*)optval = tcp_nagle_disabled(sock->conn->pcb.tcp);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_NODELAY) = %s\n",
|
|
s, (*(int*)optval)?"on":"off") );
|
|
break;
|
|
case TCP_KEEPALIVE:
|
|
*(int*)optval = (int)sock->conn->pcb.tcp->keep_idle;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
|
|
#if LWIP_TCP_KEEPALIVE
|
|
case TCP_KEEPIDLE:
|
|
*(int*)optval = (int)(sock->conn->pcb.tcp->keep_idle/1000);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_KEEPIDLE) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
case TCP_KEEPINTVL:
|
|
*(int*)optval = (int)(sock->conn->pcb.tcp->keep_intvl/1000);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_KEEPINTVL) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
case TCP_KEEPCNT:
|
|
*(int*)optval = (int)sock->conn->pcb.tcp->keep_cnt;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_KEEPCNT) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
#endif /* LWIP_TCP_KEEPALIVE */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_TCP */
|
|
|
|
#if LWIP_IPV6
|
|
/* Level: IPPROTO_IPV6 */
|
|
case IPPROTO_IPV6:
|
|
switch (optname) {
|
|
case IPV6_V6ONLY:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, int);
|
|
*(int*)optval = (netconn_get_ipv6only(sock->conn) ? 1 : 0);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IPV6, IPV6_V6ONLY) = %d\n",
|
|
s, *(int *)optval));
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IPV6, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_IPV6 */
|
|
|
|
#if LWIP_UDP && LWIP_UDPLITE
|
|
/* Level: IPPROTO_UDPLITE */
|
|
case IPPROTO_UDPLITE:
|
|
/* Special case: all IPPROTO_UDPLITE option take an int */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, *optlen, int);
|
|
/* If this is no UDP lite socket, ignore any options. */
|
|
if (!NETCONNTYPE_ISUDPLITE(netconn_type(sock->conn))) {
|
|
done_socket(sock);
|
|
return ENOPROTOOPT;
|
|
}
|
|
switch (optname) {
|
|
case UDPLITE_SEND_CSCOV:
|
|
*(int*)optval = sock->conn->pcb.udp->chksum_len_tx;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV) = %d\n",
|
|
s, (*(int*)optval)) );
|
|
break;
|
|
case UDPLITE_RECV_CSCOV:
|
|
*(int*)optval = sock->conn->pcb.udp->chksum_len_rx;
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV) = %d\n",
|
|
s, (*(int*)optval)) );
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_UDP */
|
|
/* Level: IPPROTO_RAW */
|
|
case IPPROTO_RAW:
|
|
switch (optname) {
|
|
#if LWIP_IPV6 && LWIP_RAW
|
|
case IPV6_CHECKSUM:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_RAW);
|
|
if (sock->conn->pcb.raw->chksum_reqd == 0) {
|
|
*(int *)optval = -1;
|
|
} else {
|
|
*(int *)optval = sock->conn->pcb.raw->chksum_offset;
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM) = %d\n",
|
|
s, (*(int*)optval)) );
|
|
break;
|
|
#endif /* LWIP_IPV6 && LWIP_RAW */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_RAW, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n",
|
|
s, level, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (level) */
|
|
|
|
done_socket(sock);
|
|
return err;
|
|
}
|
|
|
|
int
|
|
lwip_setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen)
|
|
{
|
|
int err = 0;
|
|
struct lwip_sock *sock = get_socket(s);
|
|
#if !LWIP_TCPIP_CORE_LOCKING
|
|
err_t cberr;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_DECLARE(data);
|
|
#endif /* !LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
if (NULL == optval) {
|
|
sock_set_errno(sock, EFAULT);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
#if LWIP_TCPIP_CORE_LOCKING
|
|
/* core-locking can just call the -impl function */
|
|
LOCK_TCPIP_CORE();
|
|
err = lwip_setsockopt_impl(s, level, optname, optval, optlen);
|
|
UNLOCK_TCPIP_CORE();
|
|
|
|
#else /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
#if LWIP_MPU_COMPATIBLE
|
|
/* MPU_COMPATIBLE copies the optval data, so check for max size here */
|
|
if (optlen > LWIP_SETGETSOCKOPT_MAXOPTLEN) {
|
|
sock_set_errno(sock, ENOBUFS);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(data, sock);
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).s = s;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).level = level;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optname = optname;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optlen = optlen;
|
|
#if LWIP_MPU_COMPATIBLE
|
|
MEMCPY(LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optval, optval, optlen);
|
|
#else /* LWIP_MPU_COMPATIBLE */
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).optval.pc = (const void*)optval;
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).err = 0;
|
|
#if LWIP_NETCONN_SEM_PER_THREAD
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem = LWIP_NETCONN_THREAD_SEM_GET();
|
|
#else
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem = &sock->conn->op_completed;
|
|
#endif
|
|
cberr = tcpip_callback(lwip_setsockopt_callback, &LWIP_SETGETSOCKOPT_DATA_VAR_REF(data));
|
|
if (cberr != ERR_OK) {
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data);
|
|
sock_set_errno(sock, err_to_errno(cberr));
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
sys_arch_sem_wait((sys_sem_t*)(LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).completed_sem), 0);
|
|
|
|
/* maybe lwip_getsockopt_internal has changed err */
|
|
err = LWIP_SETGETSOCKOPT_DATA_VAR_REF(data).err;
|
|
LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data);
|
|
#endif /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
sock_set_errno(sock, err);
|
|
done_socket(sock);
|
|
return err ? -1 : 0;
|
|
}
|
|
|
|
#if !LWIP_TCPIP_CORE_LOCKING
|
|
/** lwip_setsockopt_callback: only used without CORE_LOCKING
|
|
* to get into the tcpip_thread
|
|
*/
|
|
static void
|
|
lwip_setsockopt_callback(void *arg)
|
|
{
|
|
struct lwip_setgetsockopt_data *data;
|
|
LWIP_ASSERT("arg != NULL", arg != NULL);
|
|
data = (struct lwip_setgetsockopt_data*)arg;
|
|
|
|
data->err = lwip_setsockopt_impl(data->s, data->level, data->optname,
|
|
#if LWIP_MPU_COMPATIBLE
|
|
data->optval,
|
|
#else /* LWIP_MPU_COMPATIBLE */
|
|
data->optval.pc,
|
|
#endif /* LWIP_MPU_COMPATIBLE */
|
|
data->optlen);
|
|
|
|
sys_sem_signal((sys_sem_t*)(data->completed_sem));
|
|
}
|
|
#endif /* LWIP_TCPIP_CORE_LOCKING */
|
|
|
|
/** lwip_setsockopt_impl: the actual implementation of setsockopt:
|
|
* same argument as lwip_setsockopt, either called directly or through callback
|
|
*/
|
|
static int
|
|
lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_t optlen)
|
|
{
|
|
int err = 0;
|
|
struct lwip_sock *sock = tryget_socket(s);
|
|
if (!sock) {
|
|
return EBADF;
|
|
}
|
|
|
|
switch (level) {
|
|
|
|
/* Level: SOL_SOCKET */
|
|
case SOL_SOCKET:
|
|
switch (optname) {
|
|
|
|
/* SO_ACCEPTCONN is get-only */
|
|
|
|
/* The option flags */
|
|
case SO_BROADCAST:
|
|
case SO_KEEPALIVE:
|
|
#if SO_REUSE
|
|
case SO_REUSEADDR:
|
|
#endif /* SO_REUSE */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, int);
|
|
if (*(const int*)optval) {
|
|
ip_set_option(sock->conn->pcb.ip, optname);
|
|
} else {
|
|
ip_reset_option(sock->conn->pcb.ip, optname);
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, optname=0x%x, ..) -> %s\n",
|
|
s, optname, (*(const int*)optval?"on":"off")));
|
|
break;
|
|
|
|
/* SO_TYPE is get-only */
|
|
/* SO_ERROR is get-only */
|
|
|
|
#if LWIP_SO_SNDTIMEO
|
|
case SO_SNDTIMEO:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, LWIP_SO_SNDRCVTIMEO_OPTTYPE);
|
|
netconn_set_sendtimeout(sock->conn, LWIP_SO_SNDRCVTIMEO_GET_MS(optval));
|
|
break;
|
|
#endif /* LWIP_SO_SNDTIMEO */
|
|
#if LWIP_SO_RCVTIMEO
|
|
case SO_RCVTIMEO:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, LWIP_SO_SNDRCVTIMEO_OPTTYPE);
|
|
netconn_set_recvtimeout(sock->conn, (int)LWIP_SO_SNDRCVTIMEO_GET_MS(optval));
|
|
break;
|
|
#endif /* LWIP_SO_RCVTIMEO */
|
|
#if LWIP_SO_RCVBUF
|
|
case SO_RCVBUF:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, int);
|
|
netconn_set_recvbufsize(sock->conn, *(const int*)optval);
|
|
break;
|
|
#endif /* LWIP_SO_RCVBUF */
|
|
#if LWIP_SO_LINGER
|
|
case SO_LINGER:
|
|
{
|
|
const struct linger* linger = (const struct linger*)optval;
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, struct linger);
|
|
if (linger->l_onoff) {
|
|
int lingersec = linger->l_linger;
|
|
if (lingersec < 0) {
|
|
done_socket(sock);
|
|
return EINVAL;
|
|
}
|
|
if (lingersec > 0xFFFF) {
|
|
lingersec = 0xFFFF;
|
|
}
|
|
sock->conn->linger = (s16_t)lingersec;
|
|
} else {
|
|
sock->conn->linger = -1;
|
|
}
|
|
}
|
|
break;
|
|
#endif /* LWIP_SO_LINGER */
|
|
#if LWIP_UDP
|
|
case SO_NO_CHECK:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_UDP);
|
|
#if LWIP_UDPLITE
|
|
if ((udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_UDPLITE) != 0) {
|
|
/* this flag is only available for UDP, not for UDP lite */
|
|
done_socket(sock);
|
|
return EAFNOSUPPORT;
|
|
}
|
|
#endif /* LWIP_UDPLITE */
|
|
if (*(const int*)optval) {
|
|
udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) | UDP_FLAGS_NOCHKSUM);
|
|
} else {
|
|
udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) & ~UDP_FLAGS_NOCHKSUM);
|
|
}
|
|
break;
|
|
#endif /* LWIP_UDP */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
|
|
/* Level: IPPROTO_IP */
|
|
case IPPROTO_IP:
|
|
switch (optname) {
|
|
case IP_TTL:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, int);
|
|
sock->conn->pcb.ip->ttl = (u8_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TTL, ..) -> %d\n",
|
|
s, sock->conn->pcb.ip->ttl));
|
|
break;
|
|
case IP_TOS:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, int);
|
|
sock->conn->pcb.ip->tos = (u8_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TOS, ..)-> %d\n",
|
|
s, sock->conn->pcb.ip->tos));
|
|
break;
|
|
#if LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS
|
|
case IP_MULTICAST_TTL:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, u8_t, NETCONN_UDP);
|
|
udp_set_multicast_ttl(sock->conn->pcb.udp, (u8_t)(*(const u8_t*)optval));
|
|
break;
|
|
case IP_MULTICAST_IF:
|
|
{
|
|
ip4_addr_t if_addr;
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, struct in_addr, NETCONN_UDP);
|
|
inet_addr_to_ip4addr(&if_addr, (const struct in_addr*)optval);
|
|
udp_set_multicast_netif_addr(sock->conn->pcb.udp, &if_addr);
|
|
}
|
|
break;
|
|
case IP_MULTICAST_LOOP:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, u8_t, NETCONN_UDP);
|
|
if (*(const u8_t*)optval) {
|
|
udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) | UDP_FLAGS_MULTICAST_LOOP);
|
|
} else {
|
|
udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) & ~UDP_FLAGS_MULTICAST_LOOP);
|
|
}
|
|
break;
|
|
#endif /* LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS */
|
|
#if LWIP_IGMP
|
|
case IP_ADD_MEMBERSHIP:
|
|
case IP_DROP_MEMBERSHIP:
|
|
{
|
|
/* If this is a TCP or a RAW socket, ignore these options. */
|
|
/* @todo: assign membership to this socket so that it is dropped when closing the socket */
|
|
err_t igmp_err;
|
|
const struct ip_mreq *imr = (const struct ip_mreq *)optval;
|
|
ip4_addr_t if_addr;
|
|
ip4_addr_t multi_addr;
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, struct ip_mreq, NETCONN_UDP);
|
|
inet_addr_to_ip4addr(&if_addr, &imr->imr_interface);
|
|
inet_addr_to_ip4addr(&multi_addr, &imr->imr_multiaddr);
|
|
if (optname == IP_ADD_MEMBERSHIP) {
|
|
if (!lwip_socket_register_membership(s, &if_addr, &multi_addr)) {
|
|
/* cannot track membership (out of memory) */
|
|
err = ENOMEM;
|
|
igmp_err = ERR_OK;
|
|
} else {
|
|
igmp_err = igmp_joingroup(&if_addr, &multi_addr);
|
|
}
|
|
} else {
|
|
igmp_err = igmp_leavegroup(&if_addr, &multi_addr);
|
|
lwip_socket_unregister_membership(s, &if_addr, &multi_addr);
|
|
}
|
|
if (igmp_err != ERR_OK) {
|
|
err = EADDRNOTAVAIL;
|
|
}
|
|
}
|
|
break;
|
|
#endif /* LWIP_IGMP */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
|
|
#if LWIP_TCP
|
|
/* Level: IPPROTO_TCP */
|
|
case IPPROTO_TCP:
|
|
/* Special case: all IPPROTO_TCP option take an int */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_TCP);
|
|
if (sock->conn->pcb.tcp->state == LISTEN) {
|
|
done_socket(sock);
|
|
return EINVAL;
|
|
}
|
|
switch (optname) {
|
|
case TCP_NODELAY:
|
|
if (*(const int*)optval) {
|
|
tcp_nagle_disable(sock->conn->pcb.tcp);
|
|
} else {
|
|
tcp_nagle_enable(sock->conn->pcb.tcp);
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_NODELAY) -> %s\n",
|
|
s, (*(const int *)optval)?"on":"off") );
|
|
break;
|
|
case TCP_KEEPALIVE:
|
|
sock->conn->pcb.tcp->keep_idle = (u32_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) -> %"U32_F"\n",
|
|
s, sock->conn->pcb.tcp->keep_idle));
|
|
break;
|
|
|
|
#if LWIP_TCP_KEEPALIVE
|
|
case TCP_KEEPIDLE:
|
|
sock->conn->pcb.tcp->keep_idle = 1000*(u32_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPIDLE) -> %"U32_F"\n",
|
|
s, sock->conn->pcb.tcp->keep_idle));
|
|
break;
|
|
case TCP_KEEPINTVL:
|
|
sock->conn->pcb.tcp->keep_intvl = 1000*(u32_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPINTVL) -> %"U32_F"\n",
|
|
s, sock->conn->pcb.tcp->keep_intvl));
|
|
break;
|
|
case TCP_KEEPCNT:
|
|
sock->conn->pcb.tcp->keep_cnt = (u32_t)(*(const int*)optval);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPCNT) -> %"U32_F"\n",
|
|
s, sock->conn->pcb.tcp->keep_cnt));
|
|
break;
|
|
#endif /* LWIP_TCP_KEEPALIVE */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_TCP*/
|
|
|
|
#if LWIP_IPV6
|
|
/* Level: IPPROTO_IPV6 */
|
|
case IPPROTO_IPV6:
|
|
switch (optname) {
|
|
case IPV6_V6ONLY:
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_TCP);
|
|
if (*(const int*)optval) {
|
|
netconn_set_ipv6only(sock->conn, 1);
|
|
} else {
|
|
netconn_set_ipv6only(sock->conn, 0);
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IPV6, IPV6_V6ONLY, ..) -> %d\n",
|
|
s, (netconn_get_ipv6only(sock->conn) ? 1 : 0)));
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IPV6, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_IPV6 */
|
|
|
|
#if LWIP_UDP && LWIP_UDPLITE
|
|
/* Level: IPPROTO_UDPLITE */
|
|
case IPPROTO_UDPLITE:
|
|
/* Special case: all IPPROTO_UDPLITE option take an int */
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, int);
|
|
/* If this is no UDP lite socket, ignore any options. */
|
|
if (!NETCONNTYPE_ISUDPLITE(netconn_type(sock->conn))) {
|
|
done_socket(sock);
|
|
return ENOPROTOOPT;
|
|
}
|
|
switch (optname) {
|
|
case UDPLITE_SEND_CSCOV:
|
|
if ((*(const int*)optval != 0) && ((*(const int*)optval < 8) || (*(const int*)optval > 0xffff))) {
|
|
/* don't allow illegal values! */
|
|
sock->conn->pcb.udp->chksum_len_tx = 8;
|
|
} else {
|
|
sock->conn->pcb.udp->chksum_len_tx = (u16_t)*(const int*)optval;
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV) -> %d\n",
|
|
s, (*(const int*)optval)) );
|
|
break;
|
|
case UDPLITE_RECV_CSCOV:
|
|
if ((*(const int*)optval != 0) && ((*(const int*)optval < 8) || (*(const int*)optval > 0xffff))) {
|
|
/* don't allow illegal values! */
|
|
sock->conn->pcb.udp->chksum_len_rx = 8;
|
|
} else {
|
|
sock->conn->pcb.udp->chksum_len_rx = (u16_t)*(const int*)optval;
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV) -> %d\n",
|
|
s, (*(const int*)optval)) );
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
#endif /* LWIP_UDP */
|
|
/* Level: IPPROTO_RAW */
|
|
case IPPROTO_RAW:
|
|
switch (optname) {
|
|
#if LWIP_IPV6 && LWIP_RAW
|
|
case IPV6_CHECKSUM:
|
|
/* It should not be possible to disable the checksum generation with ICMPv6
|
|
* as per RFC 3542 chapter 3.1 */
|
|
if(sock->conn->pcb.raw->protocol == IPPROTO_ICMPV6) {
|
|
done_socket(sock);
|
|
return EINVAL;
|
|
}
|
|
|
|
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_RAW);
|
|
if (*(const int *)optval < 0) {
|
|
sock->conn->pcb.raw->chksum_reqd = 0;
|
|
} else if (*(const int *)optval & 1) {
|
|
/* Per RFC3542, odd offsets are not allowed */
|
|
done_socket(sock);
|
|
return EINVAL;
|
|
} else {
|
|
sock->conn->pcb.raw->chksum_reqd = 1;
|
|
sock->conn->pcb.raw->chksum_offset = (u16_t)*(const int *)optval;
|
|
}
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM, ..) -> %d\n",
|
|
s, sock->conn->pcb.raw->chksum_reqd));
|
|
break;
|
|
#endif /* LWIP_IPV6 && LWIP_RAW */
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_RAW, UNIMPL: optname=0x%x, ..)\n",
|
|
s, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (optname) */
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n",
|
|
s, level, optname));
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
} /* switch (level) */
|
|
|
|
done_socket(sock);
|
|
return err;
|
|
}
|
|
|
|
int
|
|
lwip_ioctl(int s, long cmd, void *argp)
|
|
{
|
|
struct lwip_sock *sock = get_socket(s);
|
|
u8_t val;
|
|
#if LWIP_SO_RCVBUF
|
|
int recv_avail;
|
|
#endif /* LWIP_SO_RCVBUF */
|
|
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
switch (cmd) {
|
|
#if LWIP_SO_RCVBUF || LWIP_FIONREAD_LINUXMODE
|
|
case FIONREAD:
|
|
if (!argp) {
|
|
sock_set_errno(sock, EINVAL);
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
#if LWIP_FIONREAD_LINUXMODE
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
struct netbuf *nb;
|
|
if (sock->lastdata.netbuf) {
|
|
nb = sock->lastdata.netbuf;
|
|
*((int*)argp) = nb->p->tot_len;
|
|
} else {
|
|
struct netbuf *rxbuf;
|
|
err_t err = netconn_recv_udp_raw_netbuf_flags(sock->conn, &rxbuf, NETCONN_DONTBLOCK);
|
|
if (err != ERR_OK) {
|
|
*((int*)argp) = 0;
|
|
} else {
|
|
sock->lastdata.netbuf = rxbuf;
|
|
*((int*)argp) = rxbuf->p->tot_len;
|
|
}
|
|
}
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
#endif /* LWIP_FIONREAD_LINUXMODE */
|
|
|
|
#if LWIP_SO_RCVBUF
|
|
/* we come here if either LWIP_FIONREAD_LINUXMODE==0 or this is a TCP socket */
|
|
SYS_ARCH_GET(sock->conn->recv_avail, recv_avail);
|
|
if (recv_avail < 0) {
|
|
recv_avail = 0;
|
|
}
|
|
|
|
/* Check if there is data left from the last recv operation. /maq 041215 */
|
|
if (sock->lastdata.netbuf) {
|
|
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
|
|
recv_avail += sock->lastdata.pbuf->tot_len;
|
|
} else {
|
|
recv_avail += sock->lastdata.netbuf->p->tot_len;
|
|
}
|
|
}
|
|
*((int*)argp) = recv_avail;
|
|
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %"U16_F"\n", s, argp, *((u16_t*)argp)));
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
#else /* LWIP_SO_RCVBUF */
|
|
break;
|
|
#endif /* LWIP_SO_RCVBUF */
|
|
#endif /* LWIP_SO_RCVBUF || LWIP_FIONREAD_LINUXMODE */
|
|
|
|
case (long)FIONBIO:
|
|
val = 0;
|
|
if (argp && *(u32_t*)argp) {
|
|
val = 1;
|
|
}
|
|
netconn_set_nonblocking(sock->conn, val);
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONBIO, %d)\n", s, val));
|
|
sock_set_errno(sock, 0);
|
|
done_socket(sock);
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
} /* switch (cmd) */
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, UNIMPL: 0x%lx, %p)\n", s, cmd, argp));
|
|
sock_set_errno(sock, ENOSYS); /* not yet implemented */
|
|
done_socket(sock);
|
|
return -1;
|
|
}
|
|
|
|
/** A minimal implementation of fcntl.
|
|
* Currently only the commands F_GETFL and F_SETFL are implemented.
|
|
* Only the flag O_NONBLOCK is implemented.
|
|
*/
|
|
int
|
|
lwip_fcntl(int s, int cmd, int val)
|
|
{
|
|
struct lwip_sock *sock = get_socket(s);
|
|
int ret = -1;
|
|
|
|
if (!sock) {
|
|
return -1;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case F_GETFL:
|
|
ret = netconn_is_nonblocking(sock->conn) ? O_NONBLOCK : 0;
|
|
sock_set_errno(sock, 0);
|
|
break;
|
|
case F_SETFL:
|
|
if ((val & ~O_NONBLOCK) == 0) {
|
|
/* only O_NONBLOCK, all other bits are zero */
|
|
netconn_set_nonblocking(sock->conn, val & O_NONBLOCK);
|
|
ret = 0;
|
|
sock_set_errno(sock, 0);
|
|
} else {
|
|
sock_set_errno(sock, ENOSYS); /* not yet implemented */
|
|
}
|
|
break;
|
|
default:
|
|
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_fcntl(%d, UNIMPL: %d, %d)\n", s, cmd, val));
|
|
sock_set_errno(sock, ENOSYS); /* not yet implemented */
|
|
break;
|
|
}
|
|
done_socket(sock);
|
|
return ret;
|
|
}
|
|
|
|
#if LWIP_IGMP
|
|
/** Register a new IGMP membership. On socket close, the membership is dropped automatically.
|
|
*
|
|
* ATTENTION: this function is called from tcpip_thread (or under CORE_LOCK).
|
|
*
|
|
* @return 1 on success, 0 on failure
|
|
*/
|
|
static int
|
|
lwip_socket_register_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr)
|
|
{
|
|
struct lwip_sock *sock = get_socket(s);
|
|
int i;
|
|
|
|
if (!sock) {
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < LWIP_SOCKET_MAX_MEMBERSHIPS; i++) {
|
|
if (socket_ipv4_multicast_memberships[i].sock == NULL) {
|
|
socket_ipv4_multicast_memberships[i].sock = sock;
|
|
ip4_addr_copy(socket_ipv4_multicast_memberships[i].if_addr, *if_addr);
|
|
ip4_addr_copy(socket_ipv4_multicast_memberships[i].multi_addr, *multi_addr);
|
|
done_socket(sock);
|
|
return 1;
|
|
}
|
|
}
|
|
done_socket(sock);
|
|
return 0;
|
|
}
|
|
|
|
/** Unregister a previously registered membership. This prevents dropping the membership
|
|
* on socket close.
|
|
*
|
|
* ATTENTION: this function is called from tcpip_thread (or under CORE_LOCK).
|
|
*/
|
|
static void
|
|
lwip_socket_unregister_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr)
|
|
{
|
|
struct lwip_sock *sock = get_socket(s);
|
|
int i;
|
|
|
|
if (!sock) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < LWIP_SOCKET_MAX_MEMBERSHIPS; i++) {
|
|
if ((socket_ipv4_multicast_memberships[i].sock == sock) &&
|
|
ip4_addr_cmp(&socket_ipv4_multicast_memberships[i].if_addr, if_addr) &&
|
|
ip4_addr_cmp(&socket_ipv4_multicast_memberships[i].multi_addr, multi_addr)) {
|
|
socket_ipv4_multicast_memberships[i].sock = NULL;
|
|
ip4_addr_set_zero(&socket_ipv4_multicast_memberships[i].if_addr);
|
|
ip4_addr_set_zero(&socket_ipv4_multicast_memberships[i].multi_addr);
|
|
break;
|
|
}
|
|
}
|
|
done_socket(sock);
|
|
}
|
|
|
|
/** Drop all memberships of a socket that were not dropped explicitly via setsockopt.
|
|
*
|
|
* ATTENTION: this function is NOT called from tcpip_thread (or under CORE_LOCK).
|
|
*/
|
|
static void
|
|
lwip_socket_drop_registered_memberships(int s)
|
|
{
|
|
struct lwip_sock *sock = get_socket(s);
|
|
int i;
|
|
|
|
if (!sock) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < LWIP_SOCKET_MAX_MEMBERSHIPS; i++) {
|
|
if (socket_ipv4_multicast_memberships[i].sock == sock) {
|
|
ip_addr_t multi_addr, if_addr;
|
|
ip_addr_copy_from_ip4(multi_addr, socket_ipv4_multicast_memberships[i].multi_addr);
|
|
ip_addr_copy_from_ip4(if_addr, socket_ipv4_multicast_memberships[i].if_addr);
|
|
socket_ipv4_multicast_memberships[i].sock = NULL;
|
|
ip4_addr_set_zero(&socket_ipv4_multicast_memberships[i].if_addr);
|
|
ip4_addr_set_zero(&socket_ipv4_multicast_memberships[i].multi_addr);
|
|
|
|
netconn_join_leave_group(sock->conn, &multi_addr, &if_addr, NETCONN_LEAVE);
|
|
}
|
|
}
|
|
done_socket(sock);
|
|
}
|
|
#endif /* LWIP_IGMP */
|
|
#endif /* LWIP_SOCKET */
|