/*
Main grouping function
Algorithm:
1. pass on every Voltaire node
2. catch spine chip for every Voltaire node
2.1 build/interpolate chassis around this chip
2.2 go to 1.
3. pass on non Voltaire nodes (SystemImageGUID based grouping)
4. now group non Voltaire nodes by SystemImageGUID
Returns:
0 on success, -1 on failure
*/
int group_nodes(ibnd_fabric_t * fabric)
{
ibnd_node_t *node;
int chassisnum = 0;
ibnd_chassis_t *chassis;
ibnd_chassis_t *ch, *ch_next;
chassis_scan_t chassis_scan;
int vendor_id;
chassis_scan.first_chassis = NULL;
chassis_scan.current_chassis = NULL;
chassis_scan.last_chassis = NULL;
/* first pass on switches and build for every Voltaire node */
/* an appropriate chassis record (slotnum and position) */
/* according to internal connectivity */
/* not very efficient but clear code so... */
for (node = fabric->switches; node; node = node->type_next) {
vendor_id = mad_get_field(node->info, 0,IB_NODE_VENDORID_F);
if (vendor_id == VTR_VENDOR_ID
&& fill_voltaire_chassis_record(node))
goto cleanup;
else if (vendor_id == MLX_VENDOR_ID
&& fill_mellanox_chassis_record(node))
goto cleanup;
}
/* separate every Voltaire chassis from each other and build linked list of them */
/* algorithm: catch spine and find all surrounding nodes */
for (node = fabric->switches; node; node = node->type_next) {
if (mad_get_field(node->info, 0,
IB_NODE_VENDORID_F) != VTR_VENDOR_ID)
continue;
if (!node->ch_found
|| (node->chassis && node->chassis->chassisnum)
|| !is_spine(node))
continue;
if (add_chassis(&chassis_scan))
goto cleanup;
chassis_scan.current_chassis->chassisnum = ++chassisnum;
if (build_chassis(node, chassis_scan.current_chassis))
goto cleanup;
}
/* now make pass on nodes for chassis which are not Voltaire */
/* grouped by common SystemImageGUID */
for (node = fabric->nodes; node; node = node->next) {
if (mad_get_field(node->info, 0,
IB_NODE_VENDORID_F) == VTR_VENDOR_ID)
continue;
if (mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F)) {
chassis = find_chassisguid(fabric, node);
if (chassis)
chassis->nodecount++;
else {
/* Possible new chassis */
if (add_chassis(&chassis_scan))
goto cleanup;
chassis_scan.current_chassis->chassisguid =
get_chassisguid(node);
chassis_scan.current_chassis->nodecount = 1;
if (!fabric->chassis)
fabric->chassis = chassis_scan.first_chassis;
}
}
}
/* now, make another pass to see which nodes are part of chassis */
/* (defined as chassis->nodecount > 1) */
for (node = fabric->nodes; node; node = node->next) {
vendor_id = mad_get_field(node->info, 0,IB_NODE_VENDORID_F);
if (vendor_id == VTR_VENDOR_ID)
continue;
if (mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F)) {
chassis = find_chassisguid(fabric, node);
if (chassis && chassis->nodecount > 1) {
if (!chassis->chassisnum)
chassis->chassisnum = ++chassisnum;
if (!node->ch_found) {
node->ch_found = 1;
add_node_to_chassis(chassis, node);
}
else if (vendor_id == MLX_VENDOR_ID){
insert_mellanox_line_and_spine(node, chassis);
}
}
}
}
fabric->chassis = chassis_scan.first_chassis;
return 0;
cleanup:
ch = chassis_scan.first_chassis;
while (ch) {
ch_next = ch->next;
free(ch);
ch = ch_next;
}
fabric->chassis = NULL;
return -1;
}
/*
Main grouping function
Algorithm:
1. pass on every Voltaire node
2. catch spine chip for every Voltaire node
2.1 build/interpolate chassis around this chip
2.2 go to 1.
3. pass on non Voltaire nodes (SystemImageGUID based grouping)
4. now group non Voltaire nodes by SystemImageGUID
*/
ChassisList *group_nodes()
{
Node *node;
int dist;
int chassisnum = 0;
struct ChassisList *chassis;
mylist.first = NULL;
mylist.current = NULL;
mylist.last = NULL;
/* first pass on switches and build for every Voltaire node */
/* an appropriate chassis record (slotnum and position) */
/* according to internal connectivity */
/* not very efficient but clear code so... */
for (dist = 0; dist <= maxhops_discovered; dist++) {
for (node = nodesdist[dist]; node; node = node->dnext) {
if (node->vendid == VTR_VENDOR_ID)
fill_chassis_record(node);
}
}
/* separate every Voltaire chassis from each other and build linked list of them */
/* algorithm: catch spine and find all surrounding nodes */
for (dist = 0; dist <= maxhops_discovered; dist++) {
for (node = nodesdist[dist]; node; node = node->dnext) {
if (node->vendid != VTR_VENDOR_ID)
continue;
if (!node->chrecord || node->chrecord->chassisnum || !is_spine(node))
continue;
add_chassislist();
mylist.current->chassisnum = ++chassisnum;
build_chassis(node, mylist.current);
}
}
/* now make pass on nodes for chassis which are not Voltaire */
/* grouped by common SystemImageGUID */
for (dist = 0; dist <= maxhops_discovered; dist++) {
for (node = nodesdist[dist]; node; node = node->dnext) {
if (node->vendid == VTR_VENDOR_ID)
continue;
if (node->sysimgguid) {
chassis = find_chassisguid(node);
if (chassis)
chassis->nodecount++;
else {
/* Possible new chassis */
add_chassislist();
mylist.current->chassisguid = get_chassisguid(node);
mylist.current->nodecount = 1;
}
}
}
}
/* now, make another pass to see which nodes are part of chassis */
/* (defined as chassis->nodecount > 1) */
for (dist = 0; dist <= MAXHOPS; ) {
for (node = nodesdist[dist]; node; node = node->dnext) {
if (node->vendid == VTR_VENDOR_ID)
continue;
if (node->sysimgguid) {
chassis = find_chassisguid(node);
if (chassis && chassis->nodecount > 1) {
if (!chassis->chassisnum)
chassis->chassisnum = ++chassisnum;
if (!node->chrecord) {
if (!(node->chrecord = calloc(1, sizeof(ChassisRecord))))
IBPANIC("out of mem");
node->chrecord->chassisnum = chassis->chassisnum;
}
}
}
}
if (dist == maxhops_discovered)
dist = MAXHOPS; /* skip to CAs */
else
dist++;
}
return (mylist.first);
}