More IGMP changes

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2777 42af7a65-404d-4744-a932-0658087f49c3

include/net/uip/uip-arch.h

@@ -47,7 +47,11 @@
 #include <sys/ioctl.h>
 #include <stdint.h>
 #include <net/if.h>
+
 #include <net/uip/uip.h>
+#ifdef CONFIG_NET_IGMP
+#  include <net/uip/uip-igmp.h>
+#endif
 
 /****************************************************************************
  * Included Files
@@ -169,6 +173,12 @@ struct uip_driver_s
 
   uint16_t d_sndlen;
 
+  /* IGMP group list */
+
+#ifdef CONFIG_NET_IGMP
+  FAR struct igmp_group_s *grplist;
+#endif
+
   /* Driver callbacks */
 
   int (*d_ifup)(struct uip_driver_s *dev);

include/net/uip/uip-igmp.h

@@ -47,8 +47,15 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
 #include <netinet/in.h>
 
+#include <net/uip/uip.h>
+#include <net/uip/uip-arch.h>
+
 #ifdef CONFIG_NET_IGMP
 
 /****************************************************************************
@@ -67,10 +74,20 @@
 #define IGMPv3_MEMBERSHIP_REPORT 0x22    /* IGMP Ver. 3 Membership Report */
 #define IGMP_LEAVE_GROUP         0x17    /* Leave Group */
 
-/* Header sizes */
+/* Header sizes:
+ *
+ * UIP_IGMPH_LEN   - Size of IGMP header in bytes
+ * UIP_IPIGMPH_LEN - Size of IP + IGMP header
+ */
 
-#define UIP_IGMPH_LEN   4                             /* Size of IGMP header */
+#define UIP_IGMPH_LEN            8
-#define UIP_IPIGMPH_LEN (UIP_IGMPH_LEN + UIP_IPH_LEN) /* Size of IP + IGMP header */
+#define UIP_IPIGMPH_LEN          (UIP_IGMPH_LEN + UIP_IPH_LEN)
+
+/* Group membership states */
+
+#define IGMP_NON_MEMBER          0
+#define IGMP_DELAYING_MEMBER     1
+#define IGMP_IDLE_MEMBER         2
 
 /****************************************************************************
  * Public Types
@@ -124,6 +141,43 @@ struct uip_igmphdr_s
   uint16_t grpaddr[2];     /* 32-bit Group address */
 };
 
+#ifdef CONFIG_NET_IGMP_STATS
+struct igmp_stats_s
+{
+  uint32_t length_errors;
+  uint32_t chksum_errors;
+  uint32_t v1_received;
+  uint32_t joins;
+  uint32_t leave_sent;
+  uint32_t ucast_query;
+  uint32_t report_sent;
+  uint32_t query_received;
+  uint32_t report_received;
+};
+
+# define IGMP_STATINCR(p) ((p)++)
+#else
+# define IGMP_STATINCR(p)
+#endif
+
+/* This structure represents one group member.  There is a list of groups
+ * for each device interface structure.
+ * 
+ * There will be a group for the all systems group address but this 
+ * will not run the state machine as it is used to kick off reports
+ * from all the other groups
+ */
+
+struct igmp_group_s
+{
+  struct igmp_group_s *next;    /* Implements a singly-linked list */
+  uip_ipaddr_t         grpaddr; /* Group IP address */
+  WDOG_ID              wdog;    /* WDOG used to detect timeouts */
+  bool                 lastrpt; /* Indicates the last to report */
+  uint8_t              state;   /* State of the group */
+  uint8_t              msgid;   /* Pending message ID (if non-zero) */
+};
+
 /****************************************************************************
  * Public Data
  ****************************************************************************/
@@ -136,10 +190,27 @@ extern "C" {
 #define EXTERN extern
 #endif
 
+#ifdef CONFIG_NET_IGMP_STATS
+struct igmp_stats_s g_igmpstats;
+#endif
+
+extern uip_ipaddr_t g_allsystems;
+extern uip_ipaddr_t g_allrouters;
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
 
+/****************************************************************************
+ * Name:  uip_igmpdevinit
+ *
+ * Description:
+ *   Called when a new network device is registered to configure that device
+ *   for IGMP support.
+ *
+ ****************************************************************************/
+
+EXTERN void uip_igmpdevinit(struct uip_driver_s *dev);
 
 #undef EXTERN
 #if defined(__cplusplus)

net/uip/uip_initialize.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * net/uip/uip_initialize.c
  *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007-2010 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Adapted for NuttX from logic in uIP which also has a BSD-like license:
@@ -140,6 +140,12 @@ void uip_initialize(void)
 #ifdef CONFIG_NET_UDP
   uip_udpinit();
 #endif
+
+  /* Initialize IGMP support */
+
+#ifdef CONFIG_NET_IGMP
+  uip_udpinit();
+#endif
 }
 #endif /* CONFIG_NET */
 

net/uip/uip_input.c

@@ -510,6 +510,16 @@ void uip_input(struct uip_driver_s *dev)
         break;
 #endif
 
+  /* Check for ICMP input */
+
+#ifdef CONFIG_NET_IGMP
+#ifndef CONFIG_NET_IPv6
+      case UIP_PROTO_IGMP:  /* IGMP input */
+        uip_igmpinput(dev);
+        break;
+#endif
+#endif
+
       default:              /* Unrecognized/unsupported protocol */
 #ifdef CONFIG_NET_STATISTICS
         uip_stat.ip.drop++;

net/uip/uip_internal.h

@@ -210,6 +210,10 @@ EXTERN void uip_icmpsend(struct uip_driver_s *dev, uip_ipaddr_t *destaddr);
 #endif /* CONFIG_NET_ICMP */
 
 #ifdef CONFIG_NET_IGMP
+/* Defined in uip_igmpinit.c ************************************************/
+
+EXTERN void uip_igmpinit(void);
+
 /* Defined in uip_igmpinput.c ***********************************************/
 
 EXTERN void uip_igmpinput(struct uip_driver_s *dev);