216 /* Define the number of IPv4 multicast memberships, default is one per socket */
223    a socket is closed */
225   /** the socket */
242    a socket is closed */
244   /** the socket */
344     /* prevent new usage of this socket if free is pending */  in sock_inc_used()
371 /* In full-duplex mode,sock->fd_used != 0 prevents a socket descriptor from being
390       /* free the socket */  in done_socket()
409 /* Translate a socket 'int' into a pointer (only fails if the index is invalid) */
427 /* Translate a socket 'int' into a pointer (only fails if the index is invalid) */
456  * @param fd externally used socket index
457  * @return struct lwip_sock for the socket or NULL if not found
475  * @param fd externally used socket index
476  * @return struct lwip_sock for the socket or NULL if not found
492  * Map a externally used socket index to the internal socket representation.
494  * @param fd externally used socket index
495  * @return struct lwip_sock for the socket or NULL if not found
512  * Allocate a new socket for a given netconn.
514  * @param newconn the netconn for which to allocate a socket
515  * @param accepted 1 if socket has been created by accept(),
516  *                 0 if socket has been created by socket()
517  * @return the index of the new socket; -1 on error
526   /* allocate a new socket identifier */  in alloc_socket()
528     /* Protect socket array */  in alloc_socket()
540       /* The socket is not yet known to anyone, so no need to protect  in alloc_socket()
547       /* TCP sendbuf is empty, but the socket is not yet writable until connected  in alloc_socket()
562 /** Free a socket (under lock)
564  * @param sock the socket to free
591 /** Free a socket's leftover members.
609 /** Free a socket. The socket's netconn must have been
612  * @param sock the socket to free
623   /* Protect socket array */  in free_socket()
635 /* Below this, the well-known socket functions are implemented.
682 …LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LW…  in lwip_accept()
686    * though the server task might not have created a new socket yet.  in lwip_accept()
687    * In that case, newconn->socket is counted down (newconn->socket--),  in lwip_accept()
691   recvevent = (s16_t)(-1 - newconn->socket);  in lwip_accept()
692   newconn->socket = newsock;  in lwip_accept()
753     /* sockaddr does not match socket type (IPv4/IPv6) */  in lwip_bind()
846     /* sockaddr does not match socket type (IPv4/IPv6) */  in lwip_connect()
895  * Set a socket into listen mode.
896  * The socket may not have been used for another connection previously.
898  * @param s the socket to set to listening mode
948   LWIP_ASSERT("no socket given", sock != NULL);  in lwip_recv_tcp()
1076 /* Helper function to get a tcp socket's remote address info */
1363       /* reset socket error since we have received something */  in lwip_recvmsg()
1366     /* " If the socket is connected, the msg_name and msg_namelen members shall be ignored." */  in lwip_recvmsg()
1760   conn->socket = i;  in lwip_socket()
1843  * Go through the readset and writeset lists and see which socket of the sockets
1847  * @param maxfdp1 the highest socket index in the sets
1869   /* Go through each socket in each list to count number of sockets which  in lwip_selscan()
1878     /* First get the socket's status (protected)... */  in lwip_selscan()
1889       /* See if netconn of this socket is ready for read */  in lwip_selscan()
1895       /* See if netconn of this socket is ready for write */  in lwip_selscan()
1901       /* See if netconn of this socket had an error */  in lwip_selscan()
1910       /* no a valid open socket */  in lwip_selscan()
1941           /* leave the socket used until released by lwip_select_dec_sockets_used */  in lwip_select_inc_sockets_used_set()
1973       LWIP_ASSERT("socket gone at the end of select", sock != NULL);  in lwip_select_dec_sockets_used()
2015   /* Go through each socket in each list to count number of sockets which  in lwip_select()
2060       /* Increase select_waiting for each socket we are interested in */  in lwip_select()
2084             /* Not a valid socket */  in lwip_select()
2120       /* Decrease select_waiting for each socket we are interested in */  in lwip_select()
2138             /* Not a valid socket */  in lwip_select()
2158         /* This happens when a socket got closed while waiting */  in lwip_select()
2230        if another thread has since opened a new socket with that fd,  in lwip_pollscan()
2231        we must not use that socket. */  in lwip_pollscan()
2233       /* First get the socket's status (protected)... */  in lwip_pollscan()
2263         /* See if netconn of this socket is ready for read */  in lwip_pollscan()
2268         /* See if netconn of this socket is ready for write */  in lwip_pollscan()
2273         /* See if netconn of this socket had an error */  in lwip_pollscan()
2280         /* Not a valid socket */  in lwip_pollscan()
2329       LWIP_ASSERT("socket gone at the end of select", sock != NULL);  in lwip_poll_dec_sockets_used()
2399     /* Increase select_waiting for each socket we are interested in.  in lwip_poll()
2420     /* Decrease select_waiting for each socket we are interested in,  in lwip_poll()
2437       /* This happens when a socket got closed while waiting */  in lwip_poll()
2488  * Callback registered in the netconn layer for each socket-netconn.
2508   /* Get socket */  in event_callback()
2510     s = conn->socket;  in event_callback()
2513        * the server task might not have created a new socket yet.  in event_callback()
2516        * can happen before the new socket is set up. */  in event_callback()
2518       if (conn->socket < 0) {  in event_callback()
2520           /* conn->socket is -1 on initialization  in event_callback()
2521              lwip_accept adjusts sock->recvevent if conn->socket < -1 */  in event_callback()
2522           conn->socket--;  in event_callback()
2527       s = conn->socket;  in event_callback()
2578     /* Check any select calls waiting on this socket */  in event_callback()
2587  * Check if any select waiters are waiting on this socket and its events
2629         /* Test this select call for our socket */  in select_check_waiters()
2885    * We should not rely on #defines in socket.h  in lwip_sockopt_to_ipopt()
2896     LWIP_ASSERT("Unknown socket option", 0);  in lwip_sockopt_to_ipopt()
2972             default: /* unrecognized socket type */  in lwip_getsockopt_impl()
2975 …                        ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n",  in lwip_getsockopt_impl()
3170       /* If this is no UDP lite socket, ignore any options. */  in lwip_getsockopt_impl()
3538           /* If this is a TCP or a RAW socket, ignore these options. */  in lwip_setsockopt_impl()
3640           /* If this is a TCP or a RAW socket, ignore these options. */  in lwip_setsockopt_impl()
3686       /* If this is no UDP lite socket, ignore any options. */  in lwip_setsockopt_impl()
3808       /* we come here if either LWIP_FIONREAD_LINUXMODE==0 or this is a TCP socket */  in lwip_ioctl()
4005 /** Register a new IGMP membership. On socket close, the membership is dropped automatically.
4035  * on socket close.
4062 /** Drop all memberships of a socket that were not dropped explicitly via setsockopt.
4093 /** Register a new MLD6 membership. On socket close, the membership is dropped automatically.
4123  * on socket close.
4150 /** Drop all MLD6 memberships of a socket that were not dropped explicitly via setsockopt.