Daniele Lacamera / PicoTCP Featured

Free (GPLv2) TCP/IP stack developed by TASS Belgium

Dependents:   lpc1768-picotcp-demo ZeroMQ_PicoTCP_Publisher_demo TCPSocket_HelloWorld_PicoTCP Pico_TCP_UDP_Test ... more

PicoTCP. Copyright (c) 2013 TASS Belgium NV.

Released under the GNU General Public License, version 2.

Different licensing models may exist, at the sole discretion of the Copyright holders.

Official homepage: http://www.picotcp.com

Bug tracker: https://github.com/tass-belgium/picotcp/issues

Development steps:

  • initial integration with mbed RTOS
  • generic mbed Ethernet driver
  • high performance NXP LPC1768 specific Ethernet driver
  • Multi-threading support for mbed RTOS
  • Berkeley sockets and integration with the New Socket API
  • Fork of the apps running on top of the New Socket API
  • Scheduling optimizations
  • Debugging/benchmarking/testing

Demo application (measuring TCP sender performance):

Import programlpc1768-picotcp-demo

A PicoTCP demo app testing the ethernet throughput on the lpc1768 mbed board.

Last commit 17 May 2013 by TASS Belgium

Diff: modules/pico_icmp4.c

Revision:
149:5f4cb161cec3
Parent:
131:4758606c9316
Child:
152:a3d286bf94e5
--- a/modules/pico_icmp4.c	Tue Mar 11 15:34:51 2014 +0100
+++ b/modules/pico_icmp4.c	Wed Apr 09 14:31:41 2014 +0200
@@ -52,7 +52,7 @@
     if (hdr->type == PICO_ICMP_ECHO) {
         hdr->type = PICO_ICMP_ECHOREPLY;
         /* outgoing frames require a f->len without the ethernet header len */
-        if (f->dev->eth)
+        if (f->dev && f->dev->eth)
             f->len -= PICO_SIZE_ETHHDR;
 
         pico_icmp4_checksum(f);
@@ -140,6 +140,12 @@
     return pico_icmp4_notify(f, PICO_ICMP_TIME_EXCEEDED, PICO_ICMP_TIMXCEED_INTRANS);
 }
 
+int pico_icmp4_mtu_exceeded(struct pico_frame *f)
+{
+    /*Parameter check executed in pico_icmp4_notify*/
+    return pico_icmp4_notify(f, PICO_ICMP_UNREACH, PICO_ICMP_UNREACH_NEEDFRAG);
+}
+
 int pico_icmp4_packet_filtered(struct pico_frame *f)
 {
     /*Parameter check executed in pico_icmp4_notify*/
@@ -187,10 +193,13 @@
 
 PICO_TREE_DECLARE(Pings, cookie_compare);
 
-static uint8_t pico_icmp4_send_echo(struct pico_icmp4_ping_cookie *cookie)
+static int8_t pico_icmp4_send_echo(struct pico_icmp4_ping_cookie *cookie)
 {
     struct pico_frame *echo = pico_proto_ipv4.alloc(&pico_proto_ipv4, (uint16_t)(PICO_ICMPHDR_UN_SIZE + cookie->size));
     struct pico_icmp4_hdr *hdr;
+    if (!echo) {
+        return -1;
+    }
 
     hdr = (struct pico_icmp4_hdr *) echo->transport_hdr;
 
@@ -226,7 +235,7 @@
         }
 
         pico_tree_delete(&Pings, cookie);
-        pico_free(cookie);
+        PICO_FREE(cookie);
     }
 }
 
@@ -236,7 +245,7 @@
     pico_icmp4_send_echo(cookie);
     cookie->timestamp = pico_tick;
     pico_timer_add((uint32_t)cookie->timeout, ping_timeout, cookie);
-    if (cookie->seq < cookie->count)
+    if (cookie->seq < (uint16_t)cookie->count)
         pico_timer_add((uint32_t)cookie->interval, next_ping, cookie);
 }
 
@@ -246,8 +255,8 @@
     IGNORE_PARAMETER(now);
 
     if(pico_tree_findKey(&Pings, cookie)) {
-        if (cookie->seq < cookie->count) {
-            newcookie = pico_zalloc(sizeof(struct pico_icmp4_ping_cookie));
+        if (cookie->seq < (uint16_t)cookie->count) {
+            newcookie = PICO_ZALLOC(sizeof(struct pico_icmp4_ping_cookie));
             if (!newcookie)
                 return;
 
@@ -272,7 +281,7 @@
     if (cookie) {
         struct pico_icmp4_stats stats;
         cookie->err = PICO_PING_ERR_REPLIED;
-        stats.dst = cookie->dst;
+        stats.dst = ((struct pico_ipv4_hdr *)f->net_hdr)->src;
         stats.seq = cookie->seq;
         stats.size = cookie->size;
         stats.time = pico_tick - cookie->timestamp;
@@ -295,15 +304,15 @@
         return -1;
     }
 
-    cookie = pico_zalloc(sizeof(struct pico_icmp4_ping_cookie));
+    cookie = PICO_ZALLOC(sizeof(struct pico_icmp4_ping_cookie));
     if (!cookie) {
         pico_err = PICO_ERR_ENOMEM;
         return -1;
     }
 
-    if (pico_string_to_ipv4(dst, &cookie->dst.addr) < 0) {
+    if (pico_string_to_ipv4(dst, (uint32_t *)&cookie->dst.addr) < 0) {
         pico_err = PICO_ERR_EINVAL;
-        pico_free(cookie);
+        PICO_FREE(cookie);
         return -1;
     }