Lwip addons (#2260)

* Add multicast TTL to UDP and rework UdpContext

* Add limit for TCP TIME_WAIT pcbs

* Add liblwip_gcc.a

* Make the changes be backward compatible with the current xcc version

Author: me-no-dev

Diff for: boards.txt

@@ -1680,7 +1680,7 @@ coredev.build.lwip_flags=
 
 coredev.menu.LwIPVariant.Espressif=Espressif (xcc)
 coredev.menu.LwIPVariant.Espressif.build.lwip_lib=-llwip
-coredev.menu.LwIPVariant.Espressif.build.lwip_flags=
+coredev.menu.LwIPVariant.Espressif.build.lwip_flags=-DLWIP_MAYBE_XCC
 coredev.menu.LwIPVariant.Prebuilt=Prebuilt Source (gcc)
 coredev.menu.LwIPVariant.Prebuilt.build.lwip_lib=-llwip_gcc
 coredev.menu.LwIPVariant.Prebuilt.build.lwip_flags=-DLWIP_OPEN_SRC

Diff for: libraries/ESP8266WiFi/src/include/UdpContext.h

@@ -44,11 +44,11 @@ class UdpContext
     , _tx_buf_head(0)
     , _tx_buf_cur(0)
     , _tx_buf_offset(0)
-    , _multicast_ttl(1)
-    , _dest_port(0)
     {
         _pcb = udp_new();
-        _dest_addr.addr = 0;
+#ifdef LWIP_MAYBE_XCC
+        _mcast_ttl = 1;
+#endif
     }
 
     ~UdpContext()
@@ -87,8 +87,8 @@ class UdpContext
 
     bool connect(ip_addr_t addr, uint16_t port)
     {
-        _dest_addr = addr;
-        _dest_port = port;
+        ip_addr_copy(_pcb->remote_ip, addr);
+        _pcb->remote_port = port;
         return true;
     }
 
@@ -106,17 +106,16 @@ class UdpContext
 
     void setMulticastInterface(ip_addr_t addr)
     {
-        // newer versions of lwip have a macro to set the multicast ip
-        // udp_set_multicast_netif_addr(_pcb, addr);
-        _pcb->multicast_ip = addr;
+        udp_set_multicast_netif_addr(_pcb, addr);
     }
 
     void setMulticastTTL(int ttl)
     {
-        // newer versions of lwip have an additional field (mcast_ttl) for this purpose
-        // and a macro to set it instead of direct field access
-        // udp_set_multicast_ttl(_pcb, ttl);
-        _multicast_ttl = ttl;
+#ifdef LWIP_MAYBE_XCC
+        _mcast_ttl = ttl;
+#else
+        udp_set_multicast_ttl(_pcb, ttl);
+#endif
     }
 
     // warning: handler is called from tcp stack context
@@ -275,20 +274,22 @@ class UdpContext
 
 
         if (!addr) {
-            addr = &_dest_addr;
-            port = _dest_port;
+            addr = &_pcb->remote_ip;
+            port = _pcb->remote_port;
         }
-
+#ifdef LWIP_MAYBE_XCC
         uint16_t old_ttl = _pcb->ttl;
         if (ip_addr_ismulticast(addr)) {
-            _pcb->ttl = _multicast_ttl;
+            _pcb->ttl = _mcast_ttl;
         }
-
+#endif
         err_t err = udp_sendto(_pcb, tx_copy, addr, port);
         if (err != ERR_OK) {
             DEBUGV(":ust rc=%d\r\n", err);
         }
+#ifdef LWIP_MAYBE_XCC
         _pcb->ttl = old_ttl;
+#endif
         pbuf_free(tx_copy);
         return err == ERR_OK;
     }
@@ -365,10 +366,10 @@ class UdpContext
     pbuf* _tx_buf_head;
     pbuf* _tx_buf_cur;
     size_t _tx_buf_offset;
-    uint16_t _multicast_ttl;
-    uint16_t _dest_port;
-    ip_addr_t _dest_addr;
     rxhandler_t _on_rx;
+#ifdef LWIP_MAYBE_XCC
+    uint16_t _mcast_ttl;
+#endif
 };
 
 

Diff for: tools/sdk/lib/liblwip_gcc.a

@@ -1,8 +1,8 @@
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * 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,
@@ -11,21 +11,21 @@
  *    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. 
+ *    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 
+ * 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>
  *
  */
@@ -284,7 +284,7 @@ struct tcp_seg {
   u16_t oversize_left;     /* Extra bytes available at the end of the last
                               pbuf in unsent (used for asserting vs.
                               tcp_pcb.unsent_oversized only) */
-#endif /* TCP_OVERSIZE_DBGCHECK */ 
+#endif /* TCP_OVERSIZE_DBGCHECK */
 #if TCP_CHECKSUM_ON_COPY
   u16_t chksum;
   u8_t  chksum_swapped;
@@ -313,7 +313,7 @@ extern u32_t tcp_ticks;
 
 /* The TCP PCB lists. */
 union tcp_listen_pcbs_t { /* List of all TCP PCBs in LISTEN state. */
-  struct tcp_pcb_listen *listen_pcbs; 
+  struct tcp_pcb_listen *listen_pcbs;
   struct tcp_pcb *pcbs;
 };
 extern struct tcp_pcb *tcp_bound_pcbs;
@@ -325,7 +325,7 @@ extern struct tcp_pcb *tcp_tw_pcbs;      /* List of all TCP PCBs in TIME-WAIT. *
 
 extern struct tcp_pcb *tcp_tmp_pcb;      /* Only used for temporary storage. */
 
-/* Axioms about the above lists:   
+/* Axioms about the above lists:
    1) Every TCP PCB that is not CLOSED is in one of the lists.
    2) A PCB is only in one of the lists.
    3) All PCBs in the tcp_listen_pcbs list is in LISTEN state.
@@ -396,6 +396,26 @@ extern struct tcp_pcb *tcp_tmp_pcb;      /* Only used for temporary storage. */
 
 #endif /* LWIP_DEBUG */
 
+#define TCP_TW_LIMIT(l)                                   \
+  do {                                                    \
+    u32_t tcp_tmp_pcbs_count = 0;                         \
+    tcp_tmp_pcb = tcp_tw_pcbs;                            \
+    while(tcp_tmp_pcb != NULL) {                          \
+      if(++tcp_tmp_pcbs_count == (l)) {                   \
+        struct tcp_pcb *_tcp_tmp_pcb = tcp_tmp_pcb->next; \
+        tcp_tmp_pcb->next = NULL;                         \
+        tcp_tmp_pcb = _tcp_tmp_pcb;                       \
+        while(tcp_tmp_pcb != NULL) {                      \
+          _tcp_tmp_pcb = tcp_tmp_pcb;                     \
+          tcp_pcb_purge(tcp_tmp_pcb);                     \
+          tcp_tmp_pcb = tcp_tmp_pcb->next;                \
+          memp_free(MEMP_TCP_PCB, _tcp_tmp_pcb);          \
+        }                                                 \
+        break;                                            \
+      }                                                   \
+      tcp_tmp_pcb = tcp_tmp_pcb->next;                    \
+    }                                                     \
+  } while(0)
 
 /* Internal functions: */
 struct tcp_pcb *tcp_pcb_copy(struct tcp_pcb *pcb)ICACHE_FLASH_ATTR;

Diff for: tools/sdk/lwip/include/lwip/tcp_impl.h

@@ -1,8 +1,8 @@
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * 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,
@@ -11,21 +11,21 @@
  *    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. 
+ *    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 
+ * 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>
  *
  */
@@ -103,6 +103,10 @@ struct udp_pcb {
 #if LWIP_IGMP
   /** outgoing network interface for multicast packets */
   ip_addr_t multicast_ip;
+#ifndef LWIP_MAYBE_XCC
+  /** TTL for outgoing multicast packets */
+  u8_t mcast_ttl;
+#endif /* LWIP_MAYBE_XCC */
 #endif /* LWIP_IGMP */
 
 #if LWIP_UDPLITE
@@ -113,7 +117,7 @@ struct udp_pcb {
   /** receive callback function */
   udp_recv_fn recv;
   /** user-supplied argument for the recv callback */
-  void *recv_arg;  
+  void *recv_arg;
 };
 /* udp_pcbs export for exernal reference (e.g. SNMP agent) */
 extern struct udp_pcb *udp_pcbs;
@@ -156,6 +160,15 @@ void             udp_input      (struct pbuf *p, struct netif *inp)ICACHE_FLASH_
 
 #define udp_init() /* Compatibility define, not init needed. */
 
+#if LWIP_IGMP
+#define udp_set_multicast_netif_addr(pcb, ipaddr)  ip_addr_copy((pcb)->multicast_ip, (ipaddr))
+#define udp_get_multicast_netif_addr(pcb)          ((pcb)->multicast_ip)
+#ifndef LWIP_MAYBE_XCC
+#define udp_set_multicast_ttl(pcb, value)      do { (pcb)->mcast_ttl = value; } while(0)
+#define udp_get_multicast_ttl(pcb)                 ((pcb)->mcast_ttl)
+#endif /* LWIP_MAYBE_XCC */
+#endif /* LWIP_IGMP */
+
 #if UDP_DEBUG
 void udp_debug_print(struct udp_hdr *udphdr)ICACHE_FLASH_ATTR;
 #else