initial commit of lk (little kernel) project
diff --git a/lib/lwip/src/include/lwip/stats.h b/lib/lwip/src/include/lwip/stats.h
new file mode 100644
index 0000000..71acfd0
--- /dev/null
+++ b/lib/lwip/src/include/lwip/stats.h
@@ -0,0 +1,158 @@
+/*
+ * 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>
+ *
+ */
+#ifndef __LWIP_STATS_H__
+#define __LWIP_STATS_H__
+
+#include "lwip/opt.h"
+#include "arch/cc.h"
+
+#include "lwip/mem.h"
+#include "lwip/memp.h"
+
+#if LWIP_STATS
+
+struct stats_proto {
+ u16_t xmit; /* Transmitted packets. */
+ u16_t rexmit; /* Retransmitted packets. */
+ u16_t recv; /* Received packets. */
+ u16_t fw; /* Forwarded packets. */
+ u16_t drop; /* Dropped packets. */
+ u16_t chkerr; /* Checksum error. */
+ u16_t lenerr; /* Invalid length error. */
+ u16_t memerr; /* Out of memory error. */
+ u16_t rterr; /* Routing error. */
+ u16_t proterr; /* Protocol error. */
+ u16_t opterr; /* Error in options. */
+ u16_t err; /* Misc error. */
+ u16_t cachehit;
+};
+
+struct stats_mem {
+ mem_size_t avail;
+ mem_size_t used;
+ mem_size_t max;
+ mem_size_t err;
+};
+
+struct stats_pbuf {
+ u16_t avail;
+ u16_t used;
+ u16_t max;
+ u16_t err;
+
+ u16_t alloc_locked;
+ u16_t refresh_locked;
+};
+
+struct stats_syselem {
+ u16_t used;
+ u16_t max;
+ u16_t err;
+};
+
+struct stats_sys {
+ struct stats_syselem sem;
+ struct stats_syselem mbox;
+};
+
+struct stats_ {
+ struct stats_proto link;
+ struct stats_proto ip_frag;
+ struct stats_proto ip;
+ struct stats_proto icmp;
+ struct stats_proto udp;
+ struct stats_proto tcp;
+ struct stats_pbuf pbuf;
+ struct stats_mem mem;
+ struct stats_mem memp[MEMP_MAX];
+ struct stats_sys sys;
+};
+
+extern struct stats_ lwip_stats;
+
+
+void stats_init(void);
+
+#define STATS_INC(x) ++lwip_stats.x
+#else
+#define stats_init()
+#define STATS_INC(x)
+#endif /* LWIP_STATS */
+
+#if TCP_STATS
+#define TCP_STATS_INC(x) STATS_INC(x)
+#else
+#define TCP_STATS_INC(x)
+#endif
+
+#if UDP_STATS
+#define UDP_STATS_INC(x) STATS_INC(x)
+#else
+#define UDP_STATS_INC(x)
+#endif
+
+#if ICMP_STATS
+#define ICMP_STATS_INC(x) STATS_INC(x)
+#else
+#define ICMP_STATS_INC(x)
+#endif
+
+#if IP_STATS
+#define IP_STATS_INC(x) STATS_INC(x)
+#else
+#define IP_STATS_INC(x)
+#endif
+
+#if IPFRAG_STATS
+#define IPFRAG_STATS_INC(x) STATS_INC(x)
+#else
+#define IPFRAG_STATS_INC(x)
+#endif
+
+#if LINK_STATS
+#define LINK_STATS_INC(x) STATS_INC(x)
+#else
+#define LINK_STATS_INC(x)
+#endif
+
+/* Display of statistics */
+#if LWIP_STATS_DISPLAY
+void stats_display(void);
+#else
+#define stats_display()
+#endif
+
+#endif /* __LWIP_STATS_H__ */
+
+
+
+