| /** |
| * @file |
| * Sockets BSD-Like API module |
| * |
| * @defgroup socket Socket API |
| * @ingroup sequential_api |
| * BSD-style socket API.\n |
| * Thread-safe, to be called from non-TCPIP threads only.\n |
| * Can be activated by defining @ref LWIP_SOCKET to 1.\n |
| * Header is in posix/sys/socket.h\b |
| */ |
| |
| /* |
| * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| * OF SUCH DAMAGE. |
| * |
| * This file is part of the lwIP TCP/IP stack. |
| * |
| * Author: Adam Dunkels <adam@sics.se> |
| * |
| * Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu> |
| * |
| */ |
| |
| #include "lwip/opt.h" |
| |
| #if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ |
| |
| #include "lwip/sockets.h" |
| #include "lwip/api.h" |
| #include "lwip/sys.h" |
| #include "lwip/igmp.h" |
| #include "lwip/inet.h" |
| #include "lwip/tcp.h" |
| #include "lwip/raw.h" |
| #include "lwip/udp.h" |
| #include "lwip/memp.h" |
| #include "lwip/pbuf.h" |
| #include "lwip/priv/tcpip_priv.h" |
| #if LWIP_CHECKSUM_ON_COPY |
| #include "lwip/inet_chksum.h" |
| #endif |
| |
| #include <string.h> |
| |
| /* If the netconn API is not required publicly, then we include the necessary |
| files here to get the implementation */ |
| #if !LWIP_NETCONN |
| #undef LWIP_NETCONN |
| #define LWIP_NETCONN 1 |
| #include "api_msg.c" |
| #include "api_lib.c" |
| #include "netbuf.c" |
| #undef LWIP_NETCONN |
| #define LWIP_NETCONN 0 |
| #endif |
| |
| #if LWIP_IPV4 |
| #define IP4ADDR_PORT_TO_SOCKADDR(sin, ipaddr, port) do { \ |
| (sin)->sin_len = sizeof(struct sockaddr_in); \ |
| (sin)->sin_family = AF_INET; \ |
| (sin)->sin_port = lwip_htons((port)); \ |
| inet_addr_from_ip4addr(&(sin)->sin_addr, ipaddr); \ |
| memset((sin)->sin_zero, 0, SIN_ZERO_LEN); }while(0) |
| #define SOCKADDR4_TO_IP4ADDR_PORT(sin, ipaddr, port) do { \ |
| inet_addr_to_ip4addr(ip_2_ip4(ipaddr), &((sin)->sin_addr)); \ |
| (port) = lwip_ntohs((sin)->sin_port); }while(0) |
| #endif /* LWIP_IPV4 */ |
| |
| #if LWIP_IPV6 |
| #define IP6ADDR_PORT_TO_SOCKADDR(sin6, ipaddr, port) do { \ |
| (sin6)->sin6_len = sizeof(struct sockaddr_in6); \ |
| (sin6)->sin6_family = AF_INET6; \ |
| (sin6)->sin6_port = lwip_htons((port)); \ |
| (sin6)->sin6_flowinfo = 0; \ |
| inet6_addr_from_ip6addr(&(sin6)->sin6_addr, ipaddr); \ |
| (sin6)->sin6_scope_id = 0; }while(0) |
| #define SOCKADDR6_TO_IP6ADDR_PORT(sin6, ipaddr, port) do { \ |
| inet6_addr_to_ip6addr(ip_2_ip6(ipaddr), &((sin6)->sin6_addr)); \ |
| (port) = lwip_ntohs((sin6)->sin6_port); }while(0) |
| #endif /* LWIP_IPV6 */ |
| |
| #if LWIP_IPV4 && LWIP_IPV6 |
| static void sockaddr_to_ipaddr_port(const struct sockaddr* sockaddr, ip_addr_t* ipaddr, u16_t* port); |
| |
| #define IS_SOCK_ADDR_LEN_VALID(namelen) (((namelen) == sizeof(struct sockaddr_in)) || \ |
| ((namelen) == sizeof(struct sockaddr_in6))) |
| #define IS_SOCK_ADDR_TYPE_VALID(name) (((name)->sa_family == AF_INET) || \ |
| ((name)->sa_family == AF_INET6)) |
| #define SOCK_ADDR_TYPE_MATCH(name, sock) \ |
| ((((name)->sa_family == AF_INET) && !(NETCONNTYPE_ISIPV6((sock)->conn->type))) || \ |
| (((name)->sa_family == AF_INET6) && (NETCONNTYPE_ISIPV6((sock)->conn->type)))) |
| #define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) do { \ |
| if (IP_IS_V6(ipaddr)) { \ |
| IP6ADDR_PORT_TO_SOCKADDR((struct sockaddr_in6*)(void*)(sockaddr), ip_2_ip6(ipaddr), port); \ |
| } else { \ |
| IP4ADDR_PORT_TO_SOCKADDR((struct sockaddr_in*)(void*)(sockaddr), ip_2_ip4(ipaddr), port); \ |
| } } while(0) |
| #define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) sockaddr_to_ipaddr_port(sockaddr, ipaddr, &(port)) |
| #define DOMAIN_TO_NETCONN_TYPE(domain, type) (((domain) == AF_INET) ? \ |
| (type) : (enum netconn_type)((type) | NETCONN_TYPE_IPV6)) |
| #elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */ |
| #define IS_SOCK_ADDR_LEN_VALID(namelen) ((namelen) == sizeof(struct sockaddr_in6)) |
| #define IS_SOCK_ADDR_TYPE_VALID(name) ((name)->sa_family == AF_INET6) |
| #define SOCK_ADDR_TYPE_MATCH(name, sock) 1 |
| #define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) \ |
| IP6ADDR_PORT_TO_SOCKADDR((struct sockaddr_in6*)(void*)(sockaddr), ip_2_ip6(ipaddr), port) |
| #define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) \ |
| SOCKADDR6_TO_IP6ADDR_PORT((const struct sockaddr_in6*)(const void*)(sockaddr), ipaddr, port) |
| #define DOMAIN_TO_NETCONN_TYPE(domain, netconn_type) (netconn_type) |
| #else /*-> LWIP_IPV4: LWIP_IPV4 && LWIP_IPV6 */ |
| #define IS_SOCK_ADDR_LEN_VALID(namelen) ((namelen) == sizeof(struct sockaddr_in)) |
| #define IS_SOCK_ADDR_TYPE_VALID(name) ((name)->sa_family == AF_INET) |
| #define SOCK_ADDR_TYPE_MATCH(name, sock) 1 |
| #define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) \ |
| IP4ADDR_PORT_TO_SOCKADDR((struct sockaddr_in*)(void*)(sockaddr), ip_2_ip4(ipaddr), port) |
| #define SOCKADDR_TO_IPADDR_PORT(sockaddr, ipaddr, port) \ |
| SOCKADDR4_TO_IP4ADDR_PORT((const struct sockaddr_in*)(const void*)(sockaddr), ipaddr, port) |
| #define DOMAIN_TO_NETCONN_TYPE(domain, netconn_type) (netconn_type) |
| #endif /* LWIP_IPV6 */ |
| |
| #define IS_SOCK_ADDR_TYPE_VALID_OR_UNSPEC(name) (((name)->sa_family == AF_UNSPEC) || \ |
| IS_SOCK_ADDR_TYPE_VALID(name)) |
| #define SOCK_ADDR_TYPE_MATCH_OR_UNSPEC(name, sock) (((name)->sa_family == AF_UNSPEC) || \ |
| SOCK_ADDR_TYPE_MATCH(name, sock)) |
| #define IS_SOCK_ADDR_ALIGNED(name) ((((mem_ptr_t)(name)) % 4) == 0) |
| |
| |
| #define LWIP_SOCKOPT_CHECK_OPTLEN(optlen, opttype) do { if ((optlen) < sizeof(opttype)) { return EINVAL; }}while(0) |
| #define LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, optlen, opttype) do { \ |
| LWIP_SOCKOPT_CHECK_OPTLEN(optlen, opttype); \ |
| if ((sock)->conn == NULL) { return EINVAL; } }while(0) |
| #define LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, opttype) do { \ |
| LWIP_SOCKOPT_CHECK_OPTLEN(optlen, opttype); \ |
| if (((sock)->conn == NULL) || ((sock)->conn->pcb.tcp == NULL)) { return EINVAL; } }while(0) |
| #define LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, opttype, netconntype) do { \ |
| LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, opttype); \ |
| if (NETCONNTYPE_GROUP(netconn_type((sock)->conn)) != netconntype) { return ENOPROTOOPT; } }while(0) |
| |
| |
| #define LWIP_SETGETSOCKOPT_DATA_VAR_REF(name) API_VAR_REF(name) |
| #define LWIP_SETGETSOCKOPT_DATA_VAR_DECLARE(name) API_VAR_DECLARE(struct lwip_setgetsockopt_data, name) |
| #define LWIP_SETGETSOCKOPT_DATA_VAR_FREE(name) API_VAR_FREE(MEMP_SOCKET_SETGETSOCKOPT_DATA, name) |
| #if LWIP_MPU_COMPATIBLE |
| #define LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(name, sock) do { \ |
| name = (struct lwip_setgetsockopt_data *)memp_malloc(MEMP_SOCKET_SETGETSOCKOPT_DATA); \ |
| if (name == NULL) { \ |
| sock_set_errno(sock, ENOMEM); \ |
| return -1; \ |
| } }while(0) |
| #else /* LWIP_MPU_COMPATIBLE */ |
| #define LWIP_SETGETSOCKOPT_DATA_VAR_ALLOC(name, sock) |
| #endif /* LWIP_MPU_COMPATIBLE */ |
| |
| #if LWIP_SO_SNDRCVTIMEO_NONSTANDARD |
| #define LWIP_SO_SNDRCVTIMEO_OPTTYPE int |
| #define LWIP_SO_SNDRCVTIMEO_SET(optval, val) (*(int *)(optval) = (val)) |
| #define LWIP_SO_SNDRCVTIMEO_GET_MS(optval) ((s32_t)*(const int*)(optval)) |
| #else |
| #define LWIP_SO_SNDRCVTIMEO_OPTTYPE struct timeval |
| #define LWIP_SO_SNDRCVTIMEO_SET(optval, val) do { \ |
| s32_t loc = (val); \ |
| ((struct timeval *)(optval))->tv_sec = (loc) / 1000U; \ |
| ((struct timeval *)(optval))->tv_usec = ((loc) % 1000U) * 1000U; }while(0) |
| #define LWIP_SO_SNDRCVTIMEO_GET_MS(optval) ((((const struct timeval *)(optval))->tv_sec * 1000U) + (((const struct timeval *)(optval))->tv_usec / 1000U)) |
| #endif |
| |
| #define NUM_SOCKETS MEMP_NUM_NETCONN |
| |
| /** This is overridable for the rare case where more than 255 threads |
| * select on the same socket... |
| */ |
| #ifndef SELWAIT_T |
| #define SELWAIT_T u8_t |
| #endif |
| |
| /** Contains all internal pointers and states used for a socket */ |
| struct lwip_sock { |
| /** sockets currently are built on netconns, each socket has one netconn */ |
| struct netconn *conn; |
| /** data that was left from the previous read */ |
| void *lastdata; |
| /** offset in the data that was left from the previous read */ |
| u16_t lastoffset; |
| /** number of times data was received, set by event_callback(), |
| tested by the receive and select functions */ |
| s16_t rcvevent; |
| /** number of times data was ACKed (free send buffer), set by event_callback(), |
| tested by select */ |
| u16_t sendevent; |
| /** error happened for this socket, set by event_callback(), tested by select */ |
| u16_t errevent; |
| /** last error that occurred on this socket (in fact, all our errnos fit into an u8_t) */ |
| u8_t err; |
| /** counter of how many threads are waiting for this socket using select */ |
| SELWAIT_T select_waiting; |
| }; |
| |
| #if LWIP_NETCONN_SEM_PER_THREAD |
| #define SELECT_SEM_T sys_sem_t* |
| #define SELECT_SEM_PTR(sem) (sem) |
| #else /* LWIP_NETCONN_SEM_PER_THREAD */ |
| #define SELECT_SEM_T sys_sem_t |
| #define SELECT_SEM_PTR(sem) (&(sem)) |
| #endif /* LWIP_NETCONN_SEM_PER_THREAD */ |
| |
| /** Description for a task waiting in select */ |
| struct lwip_select_cb { |
| /** Pointer to the next waiting task */ |
| struct lwip_select_cb *next; |
| /** Pointer to the previous waiting task */ |
| struct lwip_select_cb *prev; |
| /** readset passed to select */ |
| fd_set *readset; |
| /** writeset passed to select */ |
| fd_set *writeset; |
| /** unimplemented: exceptset passed to select */ |
| fd_set *exceptset; |
| /** don't signal the same semaphore twice: set to 1 when signalled */ |
| int sem_signalled; |
| /** semaphore to wake up a task waiting for select */ |
| SELECT_SEM_T sem; |
| }; |
| |
| /** A struct sockaddr replacement that has the same alignment as sockaddr_in/ |
| * sockaddr_in6 if instantiated. |
| */ |
| union sockaddr_aligned { |
| struct sockaddr sa; |
| #if LWIP_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif /* LWIP_IPV6 */ |
| #if LWIP_IPV4 |
| struct sockaddr_in sin; |
| #endif /* LWIP_IPV4 */ |
| }; |
| |
| #if LWIP_IGMP |
| /* Define the number of IPv4 multicast memberships, default is one per socket */ |
| #ifndef LWIP_SOCKET_MAX_MEMBERSHIPS |
| #define LWIP_SOCKET_MAX_MEMBERSHIPS NUM_SOCKETS |
| #endif |
| |
| /* This is to keep track of IP_ADD_MEMBERSHIP calls to drop the membership when |
| a socket is closed */ |
| struct lwip_socket_multicast_pair { |
| /** the socket */ |
| struct lwip_sock* sock; |
| /** the interface address */ |
| ip4_addr_t if_addr; |
| /** the group address */ |
| ip4_addr_t multi_addr; |
| }; |
| |
| struct lwip_socket_multicast_pair socket_ipv4_multicast_memberships[LWIP_SOCKET_MAX_MEMBERSHIPS]; |
| |
| static int lwip_socket_register_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr); |
| static void lwip_socket_unregister_membership(int s, const ip4_addr_t *if_addr, const ip4_addr_t *multi_addr); |
| static void lwip_socket_drop_registered_memberships(int s); |
| #endif /* LWIP_IGMP */ |
| |
| /** The global array of available sockets */ |
| static struct lwip_sock sockets[NUM_SOCKETS]; |
| /** The global list of tasks waiting for select */ |
| static struct lwip_select_cb *select_cb_list; |
| /** This counter is increased from lwip_select when the list is changed |
| and checked in event_callback to see if it has changed. */ |
| static volatile int select_cb_ctr; |
| |
| #if LWIP_SOCKET_SET_ERRNO |
| #ifndef set_errno |
| #define set_errno(err) do { if (err) { errno = (err); } } while(0) |
| #endif |
| #else /* LWIP_SOCKET_SET_ERRNO */ |
| #define set_errno(err) |
| #endif /* LWIP_SOCKET_SET_ERRNO */ |
| |
| #define sock_set_errno(sk, e) do { \ |
| const int sockerr = (e); \ |
| sk->err = (u8_t)sockerr; \ |
| set_errno(sockerr); \ |
| } while (0) |
| |
| /* Forward declaration of some functions */ |
| static void event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len); |
| #if !LWIP_TCPIP_CORE_LOCKING |
| static void lwip_getsockopt_callback(void *arg); |
| static void lwip_setsockopt_callback(void *arg); |
| #endif |
| static u8_t lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *optlen); |
| static u8_t lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_t optlen); |
| |
| #if LWIP_IPV4 && LWIP_IPV6 |
| static void |
| sockaddr_to_ipaddr_port(const struct sockaddr* sockaddr, ip_addr_t* ipaddr, u16_t* port) |
| { |
| if ((sockaddr->sa_family) == AF_INET6) { |
| SOCKADDR6_TO_IP6ADDR_PORT((const struct sockaddr_in6*)(const void*)(sockaddr), ipaddr, *port); |
| ipaddr->type = IPADDR_TYPE_V6; |
| } else { |
| SOCKADDR4_TO_IP4ADDR_PORT((const struct sockaddr_in*)(const void*)(sockaddr), ipaddr, *port); |
| ipaddr->type = IPADDR_TYPE_V4; |
| } |
| } |
| #endif /* LWIP_IPV4 && LWIP_IPV6 */ |
| |
| /** LWIP_NETCONN_SEM_PER_THREAD==1: initialize thread-local semaphore */ |
| void |
| lwip_socket_thread_init(void) |
| { |
| netconn_thread_init(); |
| } |
| |
| /** LWIP_NETCONN_SEM_PER_THREAD==1: destroy thread-local semaphore */ |
| void |
| lwip_socket_thread_cleanup(void) |
| { |
| netconn_thread_cleanup(); |
| } |
| |
| /** |
| * Map a externally used socket index to the internal socket representation. |
| * |
| * @param s externally used socket index |
| * @return struct lwip_sock for the socket or NULL if not found |
| */ |
| static struct lwip_sock * |
| get_socket(int s) |
| { |
| struct lwip_sock *sock; |
| |
| s -= LWIP_SOCKET_OFFSET; |
| |
| if ((s < 0) || (s >= NUM_SOCKETS)) { |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s + LWIP_SOCKET_OFFSET)); |
| set_errno(EBADF); |
| return NULL; |
| } |
| |
| sock = &sockets[s]; |
| |
| if (!sock->conn) { |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s + LWIP_SOCKET_OFFSET)); |
| set_errno(EBADF); |
| return NULL; |
| } |
| |
| return sock; |
| } |
| |
| /** |
| * Same as get_socket but doesn't set errno |
| * |
| * @param s externally used socket index |
| * @return struct lwip_sock for the socket or NULL if not found |
| */ |
| static struct lwip_sock * |
| tryget_socket(int s) |
| { |
| s -= LWIP_SOCKET_OFFSET; |
| if ((s < 0) || (s >= NUM_SOCKETS)) { |
| return NULL; |
| } |
| if (!sockets[s].conn) { |
| return NULL; |
| } |
| return &sockets[s]; |
| } |
| |
| /** |
| * 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); |
| |
| /* allocate a new socket identifier */ |
| for (i = 0; i < NUM_SOCKETS; ++i) { |
| /* Protect socket array */ |
| SYS_ARCH_PROTECT(lev); |
| if (!sockets[i].conn) { |
| 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 = NULL; |
| sockets[i].lastoffset = 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; |
| sockets[i].err = 0; |
| sockets[i].select_waiting = 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) |
| { |
| void *lastdata; |
| |
| lastdata = sock->lastdata; |
| sock->lastdata = NULL; |
| sock->lastoffset = 0; |
| sock->err = 0; |
| |
| /* Protect socket array */ |
| SYS_ARCH_SET(sock->conn, NULL); |
| /* don't use 'sock' after this line, as another task might have allocated it */ |
| |
| if (lastdata != NULL) { |
| if (is_tcp) { |
| pbuf_free((struct pbuf *)lastdata); |
| } else { |
| netbuf_delete((struct netbuf *)lastdata); |
| } |
| } |
| } |
| |
| /* 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; |
| SYS_ARCH_DECL_PROTECT(lev); |
| |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s)); |
| sock = get_socket(s); |
| if (!sock) { |
| return -1; |
| } |
| |
| if (netconn_is_nonblocking(sock->conn) && (sock->rcvevent <= 0)) { |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): returning EWOULDBLOCK\n", s)); |
| set_errno(EWOULDBLOCK); |
| 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)); |
| } |
| return -1; |
| } |
| LWIP_ASSERT("newconn != NULL", newconn != NULL); |
| |
| newsock = alloc_socket(newconn, 1); |
| if (newsock == -1) { |
| netconn_delete(newconn); |
| sock_set_errno(sock, ENFILE); |
| return -1; |
| } |
| LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LWIP_SOCKET_OFFSET)); |
| LWIP_ASSERT("newconn->callback == event_callback", newconn->callback == event_callback); |
| 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); |
| nsock->rcvevent += (s16_t)(-1 - newconn->socket); |
| newconn->socket = newsock; |
| SYS_ARCH_UNPROTECT(lev); |
| |
| /* Note that POSIX only requires us to check addr is non-NULL. addrlen must |
| * not be NULL if addr is valid. |
| */ |
| if (addr != 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)); |
| return -1; |
| } |
| LWIP_ASSERT("addr valid but addrlen NULL", addrlen != NULL); |
| |
| 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); |
| 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)); |
| 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)); 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 IPv6 mapped IPv4 addresses */ |
| if (IP_IS_V6_VAL(local_addr) && ip6_addr_isipv6mappedipv4(ip_2_ip6(&local_addr))) { |
| unmap_ipv6_mapped_ipv4(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)); |
| return -1; |
| } |
| |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s)); |
| sock_set_errno(sock, 0); |
| 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 == 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)); |
| 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)); |
| 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)); 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 IPv6 mapped IPv4 addresses */ |
| if (IP_IS_V6_VAL(remote_addr) && ip6_addr_isipv6mappedipv4(ip_2_ip6(&remote_addr))) { |
| unmap_ipv6_mapped_ipv4(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)); |
| return -1; |
| } |
| |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s)); |
| sock_set_errno(sock, 0); |
| 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); |
| return -1; |
| } |
| sock_set_errno(sock, err_to_errno(err)); |
| return -1; |
| } |
| |
| sock_set_errno(sock, 0); |
| return 0; |
| } |
| |
| int |
| lwip_recvfrom(int s, void *mem, size_t len, int flags, |
| struct sockaddr *from, socklen_t *fromlen) |
| { |
| struct lwip_sock *sock; |
| void *buf = NULL; |
| struct pbuf *p; |
| u16_t buflen, copylen; |
| int off = 0; |
| u8_t done = 0; |
| err_t err; |
| |
| 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; |
| } |
| |
| do { |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: top while sock->lastdata=%p\n", sock->lastdata)); |
| /* Check if there is data left from the last recv operation. */ |
| if (sock->lastdata) { |
| buf = sock->lastdata; |
| } else { |
| /* If this is non-blocking call, then check first */ |
| if (((flags & MSG_DONTWAIT) || netconn_is_nonblocking(sock->conn)) && |
| (sock->rcvevent <= 0)) { |
| if (off > 0) { |
| /* already received data, return that */ |
| sock_set_errno(sock, 0); |
| return off; |
| } |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): returning EWOULDBLOCK\n", s)); |
| set_errno(EWOULDBLOCK); |
| return -1; |
| } |
| |
| /* No data was left from the previous operation, so we try to get |
| some from the network. */ |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| err = netconn_recv_tcp_pbuf(sock->conn, (struct pbuf **)&buf); |
| } else { |
| err = netconn_recv(sock->conn, (struct netbuf **)&buf); |
| } |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: netconn_recv err=%d, netbuf=%p\n", |
| err, buf)); |
| |
| if (err != ERR_OK) { |
| if (off > 0) { |
| if (err == ERR_CLSD) { |
| /* closed but already received data, ensure select gets the FIN, too */ |
| event_callback(sock->conn, NETCONN_EVT_RCVPLUS, 0); |
| } |
| /* already received data, return that */ |
| sock_set_errno(sock, 0); |
| return off; |
| } |
| /* We should really do some error checking here. */ |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL, error is \"%s\"!\n", |
| s, lwip_strerr(err))); |
| sock_set_errno(sock, err_to_errno(err)); |
| if (err == ERR_CLSD) { |
| return 0; |
| } else { |
| return -1; |
| } |
| } |
| LWIP_ASSERT("buf != NULL", buf != NULL); |
| sock->lastdata = buf; |
| } |
| |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| p = (struct pbuf *)buf; |
| } else { |
| p = ((struct netbuf *)buf)->p; |
| } |
| buflen = p->tot_len; |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: buflen=%"U16_F" len=%"SZT_F" off=%d sock->lastoffset=%"U16_F"\n", |
| buflen, len, off, sock->lastoffset)); |
| |
| buflen -= sock->lastoffset; |
| |
| if (len > buflen) { |
| copylen = buflen; |
| } else { |
| copylen = (u16_t)len; |
| } |
| |
| /* copy the contents of the received buffer into |
| the supplied memory pointer mem */ |
| pbuf_copy_partial(p, (u8_t*)mem + off, copylen, sock->lastoffset); |
| |
| off += copylen; |
| |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| LWIP_ASSERT("invalid copylen, len would underflow", len >= copylen); |
| len -= copylen; |
| if ((len <= 0) || |
| (p->flags & PBUF_FLAG_PUSH) || |
| (sock->rcvevent <= 0) || |
| ((flags & MSG_PEEK) != 0)) { |
| done = 1; |
| } |
| } else { |
| done = 1; |
| } |
| |
| /* Check to see from where the data was.*/ |
| if (done) { |
| #if !SOCKETS_DEBUG |
| if (from && fromlen) |
| #endif /* !SOCKETS_DEBUG */ |
| { |
| u16_t port; |
| ip_addr_t tmpaddr; |
| ip_addr_t *fromaddr; |
| union sockaddr_aligned saddr; |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s)); |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| fromaddr = &tmpaddr; |
| netconn_getaddr(sock->conn, fromaddr, &port, 0); |
| } else { |
| port = netbuf_fromport((struct netbuf *)buf); |
| fromaddr = netbuf_fromaddr((struct netbuf *)buf); |
| } |
| |
| #if LWIP_IPV4 && LWIP_IPV6 |
| /* Dual-stack: Map IPv4 addresses to IPv6 mapped IPv4 */ |
| if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) && IP_IS_V4(fromaddr)) { |
| ip4_2_ipv6_mapped_ipv4(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); |
| ip_addr_debug_print(SOCKETS_DEBUG, fromaddr); |
| LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F" len=%d\n", port, off)); |
| #if SOCKETS_DEBUG |
| if (from && fromlen) |
| #endif /* SOCKETS_DEBUG */ |
| { |
| if (*fromlen > saddr.sa.sa_len) { |
| *fromlen = saddr.sa.sa_len; |
| } |
| MEMCPY(from, &saddr, *fromlen); |
| } |
| } |
| } |
| |
| /* If we don't peek the incoming message... */ |
| if ((flags & MSG_PEEK) == 0) { |
| /* If this is a TCP socket, check if there is data left in the |
| buffer. If so, it should be saved in the sock structure for next |
| time around. */ |
| if ((NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) && (buflen - copylen > 0)) { |
| sock->lastdata = buf; |
| sock->lastoffset += copylen; |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: lastdata now netbuf=%p\n", buf)); |
| } else { |
| sock->lastdata = NULL; |
| sock->lastoffset = 0; |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: deleting netbuf=%p\n", buf)); |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| pbuf_free((struct pbuf *)buf); |
| } else { |
| netbuf_delete((struct netbuf *)buf); |
| } |
| buf = NULL; |
| } |
| } |
| } while (!done); |
| |
| sock_set_errno(sock, 0); |
| return off; |
| } |
| |
| 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_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) |
| return lwip_sendto(s, data, size, flags, NULL, 0); |
| #else /* (LWIP_UDP || LWIP_RAW) */ |
| sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 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)); |
| 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)); return -1;); |
| |
| LWIP_UNUSED_ARG(msg->msg_control); |
| LWIP_UNUSED_ARG(msg->msg_controllen); |
| LWIP_UNUSED_ARG(msg->msg_flags); |
| LWIP_ERROR("lwip_sendmsg: invalid msghdr iov", (msg->msg_iov != NULL && msg->msg_iovlen != 0), |
| sock_set_errno(sock, err_to_errno(ERR_ARG)); return -1;); |
| |
| 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); |
| |
| for (i = 0; i < msg->msg_iovlen; i++) { |
| written = 0; |
| err = netconn_write_partly(sock->conn, msg->msg_iov[i].iov_base, msg->msg_iov[i].iov_len, write_flags, &written); |
| if (err == ERR_OK) { |
| size += written; |
| /* check that the entire IO vector was accepected, if not return a partial write */ |
| if (written != msg->msg_iov[i].iov_len) |
| break; |
| } |
| /* none of this IO vector was accepted, but previous was, return partial write and conceal ERR_WOULDBLOCK */ |
| else if (err == ERR_WOULDBLOCK && size > 0) { |
| err = ERR_OK; |
| /* let ERR_WOULDBLOCK persist on the netconn since we are returning ERR_OK */ |
| break; |
| } else { |
| size = -1; |
| break; |
| } |
| } |
| sock_set_errno(sock, err_to_errno(err)); |
| return size; |
| #else /* LWIP_TCP */ |
| sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 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)); return -1;); |
| |
| /* initialize chain buffer with destination */ |
| chain_buf = netbuf_new(); |
| if (!chain_buf) { |
| sock_set_errno(sock, err_to_errno(ERR_MEM)); |
| return -1; |
| } |
| 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; |
| } |
| /* 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 = 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; |
| LWIP_ASSERT("iov_len < u16_t", msg->msg_iov[i].iov_len <= 0xFFFF); |
| 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 { |
| 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 IPv6 mapped IPv4 addresses */ |
| if (IP_IS_V6_VAL(chain_buf->addr) && ip6_addr_isipv6mappedipv4(ip_2_ip6(&chain_buf->addr))) { |
| unmap_ipv6_mapped_ipv4(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_delete(chain_buf); |
| |
| sock_set_errno(sock, err_to_errno(err)); |
| return (err == ERR_OK ? size : -1); |
| } |
| #else /* LWIP_UDP || LWIP_RAW */ |
| sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 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 |
| return lwip_send(s, data, size, flags); |
| #else /* LWIP_TCP */ |
| LWIP_UNUSED_ARG(flags); |
| sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| return -1; |
| #endif /* LWIP_TCP */ |
| } |
| |
| /* @todo: split into multiple sendto's? */ |
| LWIP_ASSERT("lwip_sendto: size must fit in u16_t", size <= 0xffff); |
| 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)); 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 IPv6 mapped IPv4 addresses */ |
| if (IP_IS_V6_VAL(buf.addr) && ip6_addr_isipv6mappedipv4(ip_2_ip6(&buf.addr))) { |
| unmap_ipv6_mapped_ipv4(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)); |
| 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, event_callback); |
| 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)) , |
| event_callback); |
| 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), event_callback); |
| 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; |
| 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); |
| } |
| |
| /** |
| * 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(i); |
| if (sock != NULL) { |
| void* lastdata = sock->lastdata; |
| 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++; |
| } |
| } else { |
| SYS_ARCH_UNPROTECT(lev); |
| /* continue on to next FD in list */ |
| } |
| } |
| /* 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; |
| } |
| |
| 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 |
| 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)); |
| |
| /* 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 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); |
| 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(i); |
| if (sock != NULL) { |
| sock->select_waiting++; |
| LWIP_ASSERT("sock->select_waiting > 0", sock->select_waiting > 0); |
| } 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(i); |
| if (sock != NULL) { |
| /* @todo: what if this is a new socket (reallocated?) in this case, |
| select_waiting-- would be wrong (a global 'sockalloc' counter, |
| stored per socket could help) */ |
| LWIP_ASSERT("sock->select_waiting > 0", sock->select_waiting > 0); |
| if (sock->select_waiting > 0) { |
| sock->select_waiting--; |
| } |
| } 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); |
| 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: |
| 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--; |
| } |
| 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); |
| 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); |
| } |
| |
| /** |
| * Unimplemented: Close one end of a full-duplex connection. |
| * Currently, the full connection is closed. |
| */ |
| 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); |
| return -1; |
| } |
| } else { |
| sock_set_errno(sock, ENOTCONN); |
| 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); |
| return -1; |
| } |
| err = netconn_shutdown(sock->conn, shut_rx, shut_tx); |
| |
| sock_set_errno(sock, err_to_errno(err)); |
| 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)); |
| return -1; |
| } |
| |
| #if LWIP_IPV4 && LWIP_IPV6 |
| /* Dual-stack: Map IPv4 addresses to IPv6 mapped IPv4 */ |
| if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) && |
| IP_IS_V4_VAL(naddr)) { |
| ip4_2_ipv6_mapped_ipv4(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); |
| 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) |
| { |
| u8_t err; |
| struct lwip_sock *sock = get_socket(s); |
| #if !LWIP_TCPIP_CORE_LOCKING |
| 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); |
| 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); |
| 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 |
| err = tcpip_callback(lwip_getsockopt_callback, &LWIP_SETGETSOCKOPT_DATA_VAR_REF(data)); |
| if (err != ERR_OK) { |
| LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data); |
| sock_set_errno(sock, err_to_errno(err)); |
| 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); |
| 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 u8_t |
| lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *optlen) |
| { |
| u8_t 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) { |
| 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(*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 == 0xFF ? (int)-1 : (int)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 */ |
| 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_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) { |
| 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) { |
| 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_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) { |
| 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))) { |
| 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) */ |
| |
| return err; |
| } |
| |
| int |
| lwip_setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen) |
| { |
| u8_t err = 0; |
| struct lwip_sock *sock = get_socket(s); |
| #if !LWIP_TCPIP_CORE_LOCKING |
| LWIP_SETGETSOCKOPT_DATA_VAR_DECLARE(data); |
| #endif /* !LWIP_TCPIP_CORE_LOCKING */ |
| |
| if (!sock) { |
| return -1; |
| } |
| |
| if (NULL == optval) { |
| sock_set_errno(sock, EFAULT); |
| 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); |
| 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 |
| err = tcpip_callback(lwip_setsockopt_callback, &LWIP_SETGETSOCKOPT_DATA_VAR_REF(data)); |
| if (err != ERR_OK) { |
| LWIP_SETGETSOCKOPT_DATA_VAR_FREE(data); |
| sock_set_errno(sock, err_to_errno(err)); |
| 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); |
| 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 u8_t |
| lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_t optlen) |
| { |
| u8_t 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) { |
| 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 */ |
| 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_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_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) { |
| 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))) { |
| 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: |
| 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 */ |
| 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) */ |
| |
| 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 |
| u16_t buflen = 0; |
| 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); |
| return -1; |
| } |
| #if LWIP_FIONREAD_LINUXMODE |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) { |
| struct pbuf *p; |
| if (sock->lastdata) { |
| p = ((struct netbuf *)sock->lastdata)->p; |
| *((int*)argp) = p->tot_len - sock->lastoffset; |
| } else { |
| struct netbuf *rxbuf; |
| err_t err; |
| if (sock->rcvevent <= 0) { |
| *((int*)argp) = 0; |
| } else { |
| err = netconn_recv(sock->conn, &rxbuf); |
| if (err != ERR_OK) { |
| *((int*)argp) = 0; |
| } else { |
| sock->lastdata = rxbuf; |
| sock->lastoffset = 0; |
| *((int*)argp) = rxbuf->p->tot_len; |
| } |
| } |
| } |
| 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; |
| } |
| *((int*)argp) = recv_avail; |
| |
| /* Check if there is data left from the last recv operation. /maq 041215 */ |
| if (sock->lastdata) { |
| struct pbuf *p = (struct pbuf *)sock->lastdata; |
| if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) { |
| p = ((struct netbuf *)p)->p; |
| } |
| buflen = p->tot_len; |
| buflen -= sock->lastoffset; |
| |
| *((int*)argp) += buflen; |
| } |
| |
| LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %"U16_F"\n", s, argp, *((u16_t*)argp))); |
| sock_set_errno(sock, 0); |
| 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); |
| 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 */ |
| 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; |
| } |
| 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); |
| return 1; |
| } |
| } |
| 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); |
| return; |
| } |
| } |
| } |
| |
| /** 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); |
| } |
| } |
| } |
| #endif /* LWIP_IGMP */ |
| #endif /* LWIP_SOCKET */ |