blob: b76324893ffd1d58646e16bef1902e1392f5f2c7 [file] [log] [blame]
/**
* @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].select_waiting == 0)) {
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;
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 IPv4 mapped IPv6 addresses */
if (IP_IS_V6_VAL(local_addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&local_addr))) {
unmap_ipv4_mapped_ipv6(ip_2_ip4(&local_addr), ip_2_ip6(&local_addr));
IP_SET_TYPE_VAL(local_addr, IPADDR_TYPE_V4);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
err = netconn_bind(sock->conn, &local_addr, local_port);
if (err != ERR_OK) {
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err));
sock_set_errno(sock, err_to_errno(err));
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 IPv4 mapped IPv6 addresses */
if (IP_IS_V6_VAL(remote_addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&remote_addr))) {
unmap_ipv4_mapped_ipv6(ip_2_ip4(&remote_addr), ip_2_ip6(&remote_addr));
IP_SET_TYPE_VAL(remote_addr, IPADDR_TYPE_V4);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
err = netconn_connect(sock->conn, &remote_addr, remote_port);
}
if (err != ERR_OK) {
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err));
sock_set_errno(sock, err_to_errno(err));
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 IPv4 mapped IPv6 */
if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) && IP_IS_V4(fromaddr)) {
ip4_2_ipv4_mapped_ipv6(ip_2_ip6(fromaddr), ip_2_ip4(fromaddr));
IP_SET_TYPE(fromaddr, IPADDR_TYPE_V6);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
IPADDR_PORT_TO_SOCKADDR(&saddr, fromaddr, port);
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++) {
u8_t apiflags = write_flags;
if (i + 1 < msg->msg_iovlen) {
apiflags |= NETCONN_MORE;
}
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 IPv4 mapped IPv6 addresses */
if (IP_IS_V6_VAL(chain_buf->addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&chain_buf->addr))) {
unmap_ipv4_mapped_ipv6(ip_2_ip4(&chain_buf->addr), ip_2_ip6(&chain_buf->addr));
IP_SET_TYPE_VAL(chain_buf->addr, IPADDR_TYPE_V4);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
/* send the data */
err = netconn_send(sock->conn, chain_buf);
}
/* deallocated the buffer */
netbuf_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 IPv4 mapped IPv6 addresses */
if (IP_IS_V6_VAL(buf.addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&buf.addr))) {
unmap_ipv4_mapped_ipv6(ip_2_ip4(&buf.addr), ip_2_ip6(&buf.addr));
IP_SET_TYPE_VAL(buf.addr, IPADDR_TYPE_V4);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
/* send the data */
err = netconn_send(sock->conn, &buf);
}
/* deallocated the buffer */
netbuf_free(&buf);
sock_set_errno(sock, err_to_errno(err));
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) {
/* for now, handle select_waiting==0... */
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);
}
/**
* Close one end of a full-duplex connection.
*/
int
lwip_shutdown(int s, int how)
{
struct lwip_sock *sock;
err_t err;
u8_t shut_rx = 0, shut_tx = 0;
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how));
sock = get_socket(s);
if (!sock) {
return -1;
}
if (sock->conn != NULL) {
if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) != NETCONN_TCP) {
sock_set_errno(sock, EOPNOTSUPP);
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 IPv4 mapped IPv6 */
if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) &&
IP_IS_V4_VAL(naddr)) {
ip4_2_ipv4_mapped_ipv6(ip_2_ip6(&naddr), ip_2_ip4(&naddr));
IP_SET_TYPE_VAL(naddr, IPADDR_TYPE_V6);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
IPADDR_PORT_TO_SOCKADDR(&saddr, &naddr, port);
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getaddrname(%d, addr=", s));
ip_addr_debug_print_val(SOCKETS_DEBUG, naddr);
LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", port));
if (*namelen > saddr.sa.sa_len) {
*namelen = saddr.sa.sa_len;
}
MEMCPY(name, &saddr, *namelen);
sock_set_errno(sock, 0);
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:
/* It should not be possible to disable the checksum generation with ICMPv6
* as per RFC 3542 chapter 3.1 */
if(sock->conn->pcb.raw->protocol == IPPROTO_ICMPV6) {
return EINVAL;
}
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_RAW);
if (*(const int *)optval < 0) {
sock->conn->pcb.raw->chksum_reqd = 0;
} else if (*(const int *)optval & 1) {
/* Per RFC3542, odd offsets are not allowed */
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));