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-rw-r--r--gpxe/src/proto/igmp.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/gpxe/src/proto/igmp.c b/gpxe/src/proto/igmp.c
deleted file mode 100644
index d711421a..00000000
--- a/gpxe/src/proto/igmp.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Eric Biederman wrote this code originally.
- *
- */
-
-#if 0
-
-#include <ip.h>
-#include <igmp.h>
-
-static unsigned long last_igmpv1 = 0;
-static struct igmptable_t igmptable[MAX_IGMP];
-
-static long rfc1112_sleep_interval ( long base, int exp ) {
- unsigned long divisor, tmo;
-
- if ( exp > BACKOFF_LIMIT )
- exp = BACKOFF_LIMIT;
- divisor = RAND_MAX / ( base << exp );
- tmo = random() / divisor;
- return tmo;
-}
-
-static void send_igmp_reports ( unsigned long now ) {
- struct igmp_ip_t igmp;
- int i;
-
- for ( i = 0 ; i < MAX_IGMP ; i++ ) {
- if ( ! igmptable[i].time )
- continue;
- if ( now < igmptable[i].time )
- continue;
-
- igmp.router_alert[0] = 0x94;
- igmp.router_alert[1] = 0x04;
- igmp.router_alert[2] = 0;
- igmp.router_alert[3] = 0;
- build_ip_hdr ( igmptable[i].group.s_addr, 1, IP_IGMP,
- sizeof ( igmp.router_alert ),
- sizeof ( igmp ), &igmp );
- igmp.igmp.type = IGMPv2_REPORT;
- if ( last_igmpv1 &&
- ( now < last_igmpv1 + IGMPv1_ROUTER_PRESENT_TIMEOUT ) ) {
- igmp.igmp.type = IGMPv1_REPORT;
- }
- igmp.igmp.response_time = 0;
- igmp.igmp.chksum = 0;
- igmp.igmp.group.s_addr = igmptable[i].group.s_addr;
- igmp.igmp.chksum = ipchksum ( &igmp.igmp,
- sizeof ( igmp.igmp ) );
- ip_transmit ( sizeof ( igmp ), &igmp );
- DBG ( "IGMP sent report to %s\n", inet_ntoa ( igmp.igmp.group ) );
- /* Don't send another igmp report until asked */
- igmptable[i].time = 0;
- }
-}
-
-static void process_igmp ( unsigned long now, unsigned short ptype __unused,
- struct iphdr *ip ) {
- struct igmp *igmp;
- int i;
- unsigned iplen;
-
- if ( ( ! ip ) || ( ip->protocol != IP_IGMP ) ||
- ( nic.packetlen < ( sizeof ( struct iphdr ) +
- sizeof ( struct igmp ) ) ) ) {
- return;
- }
-
- iplen = ( ip->verhdrlen & 0xf ) * 4;
- igmp = ( struct igmp * ) &nic.packet[ sizeof( struct iphdr ) ];
- if ( ipchksum ( igmp, ntohs ( ip->len ) - iplen ) != 0 )
- return;
-
- if ( ( igmp->type == IGMP_QUERY ) &&
- ( ip->dest.s_addr == htonl ( GROUP_ALL_HOSTS ) ) ) {
- unsigned long interval = IGMP_INTERVAL;
-
- if ( igmp->response_time == 0 ) {
- last_igmpv1 = now;
- } else {
- interval = ( igmp->response_time * TICKS_PER_SEC ) /10;
- }
-
- DBG ( "IGMP received query for %s\n", inet_ntoa ( igmp->group ) );
- for ( i = 0 ; i < MAX_IGMP ; i++ ) {
- uint32_t group = igmptable[i].group.s_addr;
- if ( ( group == 0 ) ||
- ( group == igmp->group.s_addr ) ) {
- unsigned long time;
- time = currticks() +
- rfc1112_sleep_interval ( interval, 0 );
- if ( time < igmptable[i].time ) {
- igmptable[i].time = time;
- }
- }
- }
- }
- if ( ( ( igmp->type == IGMPv1_REPORT ) ||
- ( igmp->type == IGMPv2_REPORT ) ) &&
- ( ip->dest.s_addr == igmp->group.s_addr ) ) {
- DBG ( "IGMP received report for %s\n",
- inet_ntoa ( igmp->group ) );
- for ( i = 0 ; i < MAX_IGMP ; i++ ) {
- if ( ( igmptable[i].group.s_addr ==
- igmp->group.s_addr ) &&
- ( igmptable[i].time != 0 ) ) {
- igmptable[i].time = 0;
- }
- }
- }
-}
-
-struct background igmp_background __background = {
- .send = send_igmp_reports,
- .process = process_igmp,
-};
-
-void leave_group ( int slot ) {
- /* Be very stupid and always send a leave group message if
- * I have subscribed. Imperfect but it is standards
- * compliant, easy and reliable to implement.
- *
- * The optimal group leave method is to only send leave when,
- * we were the last host to respond to a query on this group,
- * and igmpv1 compatibility is not enabled.
- */
- if ( igmptable[slot].group.s_addr ) {
- struct igmp_ip_t igmp;
-
- igmp.router_alert[0] = 0x94;
- igmp.router_alert[1] = 0x04;
- igmp.router_alert[2] = 0;
- igmp.router_alert[3] = 0;
- build_ip_hdr ( htonl ( GROUP_ALL_HOSTS ), 1, IP_IGMP,
- sizeof ( igmp.router_alert ), sizeof ( igmp ),
- &igmp);
- igmp.igmp.type = IGMP_LEAVE;
- igmp.igmp.response_time = 0;
- igmp.igmp.chksum = 0;
- igmp.igmp.group.s_addr = igmptable[slot].group.s_addr;
- igmp.igmp.chksum = ipchksum ( &igmp.igmp, sizeof ( igmp ) );
- ip_transmit ( sizeof ( igmp ), &igmp );
- DBG ( "IGMP left group %s\n", inet_ntoa ( igmp.igmp.group ) );
- }
- memset ( &igmptable[slot], 0, sizeof ( igmptable[0] ) );
-}
-
-void join_group ( int slot, unsigned long group ) {
- /* I have already joined */
- if ( igmptable[slot].group.s_addr == group )
- return;
- if ( igmptable[slot].group.s_addr ) {
- leave_group ( slot );
- }
- /* Only join a group if we are given a multicast ip, this way
- * code can be given a non-multicast (broadcast or unicast ip)
- * and still work...
- */
- if ( ( group & htonl ( MULTICAST_MASK ) ) ==
- htonl ( MULTICAST_NETWORK ) ) {
- igmptable[slot].group.s_addr = group;
- igmptable[slot].time = currticks();
- }
-}
-
-#endif