1 files changed, 175 insertions, 0 deletions
diff --git a/lwip/src/include/lwip/priv/sockets_priv.h b/lwip/src/include/lwip/priv/sockets_priv.h
new file mode 100644
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--- /dev/null
+++ b/lwip/src/include/lwip/priv/sockets_priv.h
@@ -0,0 +1,175 @@
+/**
+ * @file
+ * Sockets API internal implementations (do not use in application code)
+ */
+
+/*
+ * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. <joel.cunningham@garmin.com>
+ * 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: Joel Cunningham <joel.cunningham@me.com>
+ *
+ */
+#ifndef LWIP_HDR_SOCKETS_PRIV_H
+#define LWIP_HDR_SOCKETS_PRIV_H
+
+#include "lwip/opt.h"
+
+#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */
+
+#include "lwip/err.h"
+#include "lwip/sockets.h"
+#include "lwip/sys.h"
+
+#ifdef __cplusplus
+extern "C" {
+#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
+
+union lwip_sock_lastdata {
+  struct netbuf *netbuf;
+  struct pbuf *pbuf;
+};
+
+/** 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 */
+  union lwip_sock_lastdata lastdata;
+#if LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL
+  /** 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;
+  /** counter of how many threads are waiting for this socket using select */
+  SELWAIT_T select_waiting;
+#endif /* LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL */
+#if LWIP_NETCONN_FULLDUPLEX
+  /* counter of how many threads are using a struct lwip_sock (not the 'int') */
+  u8_t fd_used;
+  /* status of pending close/delete actions */
+  u8_t fd_free_pending;
+#define LWIP_SOCK_FD_FREE_TCP  1
+#define LWIP_SOCK_FD_FREE_FREE 2
+#endif
+};
+
+#ifndef set_errno
+#define set_errno(err) do { if (err) { errno = (err); } } while(0)
+#endif
+
+#if !LWIP_TCPIP_CORE_LOCKING
+/** Maximum optlen used by setsockopt/getsockopt */
+#define LWIP_SETGETSOCKOPT_MAXOPTLEN LWIP_MAX(16, sizeof(struct ifreq))
+
+/** This struct is used to pass data to the set/getsockopt_internal
+ * functions running in tcpip_thread context (only a void* is allowed) */
+struct lwip_setgetsockopt_data {
+  /** socket index for which to change options */
+  int s;
+  /** level of the option to process */
+  int level;
+  /** name of the option to process */
+  int optname;
+  /** set: value to set the option to
+    * get: value of the option is stored here */
+#if LWIP_MPU_COMPATIBLE
+  u8_t optval[LWIP_SETGETSOCKOPT_MAXOPTLEN];
+#else
+  union {
+    void *p;
+    const void *pc;
+  } optval;
+#endif
+  /** size of *optval */
+  socklen_t optlen;
+  /** if an error occurs, it is temporarily stored here */
+  int err;
+  /** semaphore to wake up the calling task */
+  void* completed_sem;
+};
+#endif /* !LWIP_TCPIP_CORE_LOCKING */
+
+#ifdef __cplusplus
+}
+#endif
+
+struct lwip_sock* lwip_socket_dbg_get_socket(int fd);
+
+#if LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL
+
+#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;
+#if LWIP_SOCKET_SELECT
+  /** readset passed to select */
+  fd_set *readset;
+  /** writeset passed to select */
+  fd_set *writeset;
+  /** unimplemented: exceptset passed to select */
+  fd_set *exceptset;
+#endif /* LWIP_SOCKET_SELECT */
+#if LWIP_SOCKET_POLL
+  /** fds passed to poll; NULL if select */
+  struct pollfd *poll_fds;
+  /** nfds passed to poll; 0 if select */
+  nfds_t poll_nfds;
+#endif /* LWIP_SOCKET_POLL */
+  /** 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;
+};
+#endif /* LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL */
+
+#endif /* LWIP_SOCKET */
+
+#endif /* LWIP_HDR_SOCKETS_PRIV_H */