-/*
- * 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>
- *
- */
-#include "lwip/opt.h"
-
-#if LWIP_HAVE_LOOPIF
-
-#include "netif/loopif.h"
-#include "lwip/mem.h"
-
-#if defined(LWIP_DEBUG) && defined(LWIP_TCPDUMP)
-#include "netif/tcpdump.h"
-#endif /* LWIP_DEBUG && LWIP_TCPDUMP */
-
-#include "lwip/tcp.h"
-#include "lwip/ip.h"
-
-static void
-loopif_input( void * arg )
-{
- struct netif *netif = (struct netif *)( ((void **)arg)[ 0 ] );
- struct pbuf *r = (struct pbuf *)( ((void **)arg)[ 1 ] );
-
- mem_free( arg );
- netif -> input( r, netif );
-}
-
-static err_t
-loopif_output(struct netif *netif, struct pbuf *p,
- struct ip_addr *ipaddr)
-{
- struct pbuf *q, *r;
- char *ptr;
- void **arg;
-
-#if defined(LWIP_DEBUG) && defined(LWIP_TCPDUMP)
- tcpdump(p);
-#endif /* LWIP_DEBUG && LWIP_TCPDUMP */
-
- r = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
- if (r != NULL) {
- ptr = r->payload;
-
- for(q = p; q != NULL; q = q->next) {
- memcpy(ptr, q->payload, q->len);
- ptr += q->len;
- }
-
- arg = mem_malloc( sizeof( void *[2]));
- if( NULL == arg ) {
- return ERR_MEM;
- }
-
- arg[0] = netif;
- arg[1] = r;
- /**
- * workaround (patch #1779) to try to prevent bug #2595:
- * When connecting to "localhost" with the loopif interface,
- * tcp_output doesn't get the opportunity to finnish sending the
- * segment before tcp_process gets it, resulting in tcp_process
- * referencing pcb->unacked-> which still is NULL.
- *
- * TODO: Is there still a race condition here? Leon
- */
- sys_timeout( 1, loopif_input, arg );
-
- return ERR_OK;
- }
- return ERR_MEM;
-}
-
-err_t
-loopif_init(struct netif *netif)
-{
- netif->name[0] = 'l';
- netif->name[1] = 'o';
-#if 0 /** TODO: I think this should be enabled, or not? Leon */
- netif->input = loopif_input;
-#endif
- netif->output = loopif_output;
- return ERR_OK;
-}
-
-#endif /* LWIP_HAVE_LOOPIF */
-
-
-
-
-
-
-
+/*\r
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.\r
+ * All rights reserved. \r
+ * \r
+ * Redistribution and use in source and binary forms, with or without modification, \r
+ * are permitted provided that the following conditions are met:\r
+ *\r
+ * 1. Redistributions of source code must retain the above copyright notice,\r
+ * this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright notice,\r
+ * this list of conditions and the following disclaimer in the documentation\r
+ * and/or other materials provided with the distribution.\r
+ * 3. The name of the author may not be used to endorse or promote products\r
+ * derived from this software without specific prior written permission. \r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED \r
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF \r
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT \r
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, \r
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT \r
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS \r
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN \r
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING \r
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY \r
+ * OF SUCH DAMAGE.\r
+ *\r
+ * This file is part of the lwIP TCP/IP stack.\r
+ * \r
+ * Author: Adam Dunkels <adam@sics.se>\r
+ *\r
+ */\r
+#include "lwip/opt.h"\r
+\r
+#if LWIP_HAVE_LOOPIF\r
+\r
+#include "netif/loopif.h"\r
+#include "lwip/mem.h"\r
+\r
+#if defined(LWIP_DEBUG) && defined(LWIP_TCPDUMP)\r
+#include "netif/tcpdump.h"\r
+#endif /* LWIP_DEBUG && LWIP_TCPDUMP */\r
+\r
+#include "lwip/tcp.h"\r
+#include "lwip/ip.h"\r
+\r
+static void\r
+loopif_input( void * arg )\r
+{\r
+ struct netif *netif = (struct netif *)( ((void **)arg)[ 0 ] );\r
+ struct pbuf *r = (struct pbuf *)( ((void **)arg)[ 1 ] );\r
+\r
+ mem_free( arg );\r
+ netif -> input( r, netif );\r
+}\r
+\r
+static err_t\r
+loopif_output(struct netif *netif, struct pbuf *p,\r
+ struct ip_addr *ipaddr)\r
+{\r
+ struct pbuf *q, *r;\r
+ char *ptr;\r
+ void **arg;\r
+\r
+#if defined(LWIP_DEBUG) && defined(LWIP_TCPDUMP)\r
+ tcpdump(p);\r
+#endif /* LWIP_DEBUG && LWIP_TCPDUMP */\r
+ \r
+ r = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);\r
+ if (r != NULL) {\r
+ ptr = r->payload;\r
+ \r
+ for(q = p; q != NULL; q = q->next) {\r
+ memcpy(ptr, q->payload, q->len);\r
+ ptr += q->len;\r
+ }\r
+\r
+ arg = mem_malloc( sizeof( void *[2]));\r
+ if( NULL == arg ) {\r
+ return ERR_MEM;\r
+ }\r
+ \r
+ arg[0] = netif;\r
+ arg[1] = r;\r
+ /**\r
+ * workaround (patch #1779) to try to prevent bug #2595:\r
+ * When connecting to "localhost" with the loopif interface,\r
+ * tcp_output doesn't get the opportunity to finnish sending the\r
+ * segment before tcp_process gets it, resulting in tcp_process\r
+ * referencing pcb->unacked-> which still is NULL.\r
+ * \r
+ * TODO: Is there still a race condition here? Leon\r
+ */\r
+ sys_timeout( 1, loopif_input, arg );\r
+ \r
+ return ERR_OK; \r
+ }\r
+ return ERR_MEM;\r
+}\r
+\r
+err_t\r
+loopif_init(struct netif *netif)\r
+{\r
+ netif->name[0] = 'l';\r
+ netif->name[1] = 'o';\r
+#if 0 /** TODO: I think this should be enabled, or not? Leon */\r
+ netif->input = loopif_input;\r
+#endif\r
+ netif->output = loopif_output;\r
+ return ERR_OK;\r
+}\r
+\r
+#endif /* LWIP_HAVE_LOOPIF */\r
+\r
+\r
+\r
+\r
+\r
+\r
+\r
projects / freertos / blobdiff