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Moved most defines from igmp.h to igmp.c for clarity since they are not used anywhere else; removed some function prototypes from igmp.h, too

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This commit is contained in:
goldsimon 2010-02-08 19:41:53 +00:00
parent 49274c1507
commit 630f575017
4 changed files with 66 additions and 58 deletions
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4
CHANGELOG
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@ -90,6 +90,10 @@ HISTORY
++ Bugfixes:
2010-02-08: Simon Goldschmidt
* igmp.c/.h, ip.h: Moved most defines from igmp.h to igmp.c for clarity
since they are not used anywhere else.
2010-02-08: Simon Goldschmidt (Stéphane Lesage)
* igmp.c, igmp.h, stats.c, stats.h: Improved IGMP stats
(patch from bug #28798)

70
src/core/ipv4/igmp.c
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@ -95,11 +95,60 @@ Steve Reynolds
#include "string.h"
/*
* IGMP constants
*/
#define IGMP_TTL 1
#define IGMP_MINLEN 8
#define ROUTER_ALERT 0x9404
#define ROUTER_ALERTLEN 4
/*
* IGMP message types, including version number.
*/
#define IGMP_MEMB_QUERY 0x11 /* Membership query */
#define IGMP_V1_MEMB_REPORT 0x12 /* Ver. 1 membership report */
#define IGMP_V2_MEMB_REPORT 0x16 /* Ver. 2 membership report */
#define IGMP_LEAVE_GROUP 0x17 /* Leave-group message */
/* Group membership states */
#define IGMP_GROUP_NON_MEMBER 0
#define IGMP_GROUP_DELAYING_MEMBER 1
#define IGMP_GROUP_IDLE_MEMBER 2
/**
* IGMP packet format.
*/
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
PACK_STRUCT_BEGIN
struct igmp_msg {
PACK_STRUCT_FIELD(u8_t igmp_msgtype);
PACK_STRUCT_FIELD(u8_t igmp_maxresp);
PACK_STRUCT_FIELD(u16_t igmp_checksum);
PACK_STRUCT_FIELD(ip_addr_t igmp_group_address);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
static err_t igmp_remove_group(struct igmp_group *group);
static void igmp_timeout( struct igmp_group *group);
static void igmp_start_timer(struct igmp_group *group, u8_t max_time);
static void igmp_stop_timer(struct igmp_group *group);
static void igmp_delaying_member(struct igmp_group *group, u8_t maxresp);
static err_t igmp_ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, struct netif *netif);
static void igmp_send(struct igmp_group *group, u8_t type);
static struct igmp_group* igmp_group_list;
static ip_addr_t allsystems;
static ip_addr_t allrouters;
/**
* Initialize the IGMP module
*/
@ -302,7 +351,7 @@ igmp_lookup_group(struct netif *ifp, ip_addr_t *addr)
* @param group the group to remove from the global igmp_group_list
* @return ERR_OK if group was removed from the list, an err_t otherwise
*/
err_t
static err_t
igmp_remove_group(struct igmp_group *group)
{
err_t err = ERR_OK;
@ -625,7 +674,7 @@ igmp_tmr(void)
*
* @param group an igmp_group for which a timeout is reached
*/
void
static void
igmp_timeout(struct igmp_group *group)
{
/* If the state is IGMP_GROUP_DELAYING_MEMBER then we send a report for this group */
@ -646,7 +695,7 @@ igmp_timeout(struct igmp_group *group)
* @param max_time the time in multiples of IGMP_TMR_INTERVAL (decrease with
* every call to igmp_tmr())
*/
void
static void
igmp_start_timer(struct igmp_group *group, u8_t max_time)
{
/* ensure the value is > 0 */
@ -658,7 +707,7 @@ igmp_start_timer(struct igmp_group *group, u8_t max_time)
*
* @param group the igmp_group for which to stop the timer
*/
void
static void
igmp_stop_timer(struct igmp_group *group)
{
group->timer = 0;
@ -670,7 +719,7 @@ igmp_stop_timer(struct igmp_group *group)
* @param group the igmp_group for which "delaying" membership report
* @param maxresp query delay
*/
void
static void
igmp_delaying_member(struct igmp_group *group, u8_t maxresp)
{
u8_t maxresphalf = maxresp / 2;
@ -704,16 +753,15 @@ igmp_delaying_member(struct igmp_group *group, u8_t maxresp)
* ERR_BUF if p doesn't have enough space for IP/LINK headers
* returns errors returned by netif->output
*/
err_t
igmp_ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
u8_t ttl, u8_t proto, struct netif *netif)
static err_t
igmp_ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, struct netif *netif)
{
/* This is the "router alert" option */
u16_t ra[2];
ra[0] = htons(ROUTER_ALERT);
ra[1] = 0x0000; /* Router shall examine packet */
IGMP_STATS_INC(igmp.xmit);
return ip_output_if_opt(p, src, dest, ttl, 0, proto, netif, ra, ROUTER_ALERTLEN);
return ip_output_if_opt(p, src, dest, IGMP_TTL, 0, IP_PROTO_IGMP, netif, ra, ROUTER_ALERTLEN);
}
/**
@ -722,7 +770,7 @@ igmp_ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
* @param group the group to which to send the packet
* @param type the type of igmp packet to send
*/
void
static void
igmp_send(struct igmp_group *group, u8_t type)
{
struct pbuf* p = NULL;
@ -756,7 +804,7 @@ igmp_send(struct igmp_group *group, u8_t type)
igmp->igmp_checksum = 0;
igmp->igmp_checksum = inet_chksum(igmp, IGMP_MINLEN);
igmp_ip_output_if(p, &src, dest, IGMP_TTL, IP_PROTO_IGMP, group->netif);
igmp_ip_output_if(p, &src, dest, group->netif);
}
pbuf_free(p);

49
src/include/ipv4/lwip/igmp.h
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@ -46,54 +46,17 @@
extern "C" {
#endif
/*
* IGMP constants
*/
#define IP_PROTO_IGMP 2
#define IGMP_TTL 1
#define IGMP_MINLEN 8
#define ROUTER_ALERT 0x9404
#define ROUTER_ALERTLEN 4
/*
* IGMP message types, including version number.
*/
#define IGMP_MEMB_QUERY 0x11 /* Membership query */
#define IGMP_V1_MEMB_REPORT 0x12 /* Ver. 1 membership report */
#define IGMP_V2_MEMB_REPORT 0x16 /* Ver. 2 membership report */
#define IGMP_LEAVE_GROUP 0x17 /* Leave-group message */
/* IGMP timer */
#define IGMP_TMR_INTERVAL 100 /* Milliseconds */
#define IGMP_V1_DELAYING_MEMBER_TMR (1000/IGMP_TMR_INTERVAL)
#define IGMP_JOIN_DELAYING_MEMBER_TMR (500 /IGMP_TMR_INTERVAL)
/* MAC Filter Actions */
/* MAC Filter Actions, these are passed to a netif's
* igmp_mac_filter callback function. */
#define IGMP_DEL_MAC_FILTER 0
#define IGMP_ADD_MAC_FILTER 1
/* Group membership states */
#define IGMP_GROUP_NON_MEMBER 0
#define IGMP_GROUP_DELAYING_MEMBER 1
#define IGMP_GROUP_IDLE_MEMBER 2
/**
* IGMP packet format.
*/
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
PACK_STRUCT_BEGIN
struct igmp_msg {
PACK_STRUCT_FIELD(u8_t igmp_msgtype);
PACK_STRUCT_FIELD(u8_t igmp_maxresp);
PACK_STRUCT_FIELD(u16_t igmp_checksum);
PACK_STRUCT_FIELD(ip_addr_t igmp_group_address);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
/**
* igmp group structure - there is
@ -123,7 +86,6 @@ struct igmp_group {
u8_t use;
};
/* Prototypes */
void igmp_init(void);
err_t igmp_start(struct netif *netif);
@ -131,17 +93,10 @@ err_t igmp_stop(struct netif *netif);
void igmp_report_groups(struct netif *netif);
struct igmp_group *igmp_lookfor_group(struct netif *ifp, ip_addr_t *addr);
struct igmp_group *igmp_lookup_group(struct netif *ifp, ip_addr_t *addr);
err_t igmp_remove_group(struct igmp_group *group);
void igmp_input(struct pbuf *p, struct netif *inp, ip_addr_t *dest);
err_t igmp_joingroup(ip_addr_t *ifaddr, ip_addr_t *groupaddr);
err_t igmp_leavegroup(ip_addr_t *ifaddr, ip_addr_t *groupaddr);
void igmp_tmr(void);
void igmp_timeout( struct igmp_group *group);
void igmp_start_timer(struct igmp_group *group, u8_t max_time);
void igmp_stop_timer(struct igmp_group *group);
void igmp_delaying_member(struct igmp_group *group, u8_t maxresp);
err_t igmp_ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t ttl, u8_t proto, struct netif *netif);
void igmp_send(struct igmp_group *group, u8_t type);
#ifdef __cplusplus
}

1
src/include/ipv4/lwip/ip.h
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@ -50,6 +50,7 @@ extern "C" {
#define IP_HLEN 20
#define IP_PROTO_ICMP 1
#define IP_PROTO_IGMP 2
#define IP_PROTO_UDP 17
#define IP_PROTO_UDPLITE 136
#define IP_PROTO_TCP 6