/**********************************************************************
* Go over all remote SMs (as updated in the sm_guid_tbl).
* Find the one with the highest priority and lowest guid.
* Compare this SM to the local SM. If the local SM is higher -
* return NULL, if the remote SM is higher - return a pointer to it.
**********************************************************************/
static osm_remote_sm_t *state_mgr_get_highest_sm(IN osm_sm_t * sm)
{
cl_qmap_t *p_sm_tbl;
osm_remote_sm_t *p_sm = NULL;
osm_remote_sm_t *p_highest_sm;
uint8_t highest_sm_priority;
ib_net64_t highest_sm_guid;
osm_node_t *p_node;
OSM_LOG_ENTER(sm->p_log);
p_sm_tbl = &sm->p_subn->sm_guid_tbl;
/* Start with the local sm as the standard */
p_highest_sm = NULL;
highest_sm_priority = sm->p_subn->opt.sm_priority;
highest_sm_guid = sm->p_subn->sm_port_guid;
/* go over all the remote SMs */
for (p_sm = (osm_remote_sm_t *) cl_qmap_head(p_sm_tbl);
p_sm != (osm_remote_sm_t *) cl_qmap_end(p_sm_tbl);
p_sm = (osm_remote_sm_t *) cl_qmap_next(&p_sm->map_item)) {
/* If the sm is in NOTACTIVE state - continue */
if (ib_sminfo_get_state(&p_sm->smi) ==
IB_SMINFO_STATE_NOTACTIVE)
continue;
if (osm_sm_is_greater_than(ib_sminfo_get_priority(&p_sm->smi),
p_sm->smi.guid, highest_sm_priority,
highest_sm_guid)) {
/* the new p_sm is with higher priority - update the highest_sm */
/* to this sm */
p_highest_sm = p_sm;
highest_sm_priority =
ib_sminfo_get_priority(&p_sm->smi);
highest_sm_guid = p_sm->smi.guid;
}
}
if (p_highest_sm != NULL) {
p_node = osm_get_node_by_guid(sm->p_subn, p_highest_sm->smi.guid);
OSM_LOG(sm->p_log, OSM_LOG_DEBUG,
"Found higher SM with guid: %016" PRIx64 " (node %s)\n",
cl_ntoh64(p_highest_sm->smi.guid),
p_node ? p_node->print_desc : "UNKNOWN");
}
OSM_LOG_EXIT(sm->p_log);
return p_highest_sm;
}
static void sa_smir_by_comp_mask(IN osm_sa_t * sa,
IN const osm_remote_sm_t * p_rem_sm,
osm_smir_search_ctxt_t * p_ctxt)
{
const ib_sminfo_record_t *const p_rcvd_rec = p_ctxt->p_rcvd_rec;
const osm_physp_t *const p_req_physp = p_ctxt->p_req_physp;
ib_net64_t const comp_mask = p_ctxt->comp_mask;
osm_port_t *p_port;
OSM_LOG_ENTER(sa->p_log);
if (comp_mask & IB_SMIR_COMPMASK_GUID) {
if (p_rem_sm->smi.guid != p_rcvd_rec->sm_info.guid)
goto Exit;
}
if (comp_mask & IB_SMIR_COMPMASK_PRIORITY) {
if (ib_sminfo_get_priority(&p_rem_sm->smi) !=
ib_sminfo_get_priority(&p_rcvd_rec->sm_info))
goto Exit;
}
if (comp_mask & IB_SMIR_COMPMASK_SMSTATE) {
if (ib_sminfo_get_state(&p_rem_sm->smi) !=
ib_sminfo_get_state(&p_rcvd_rec->sm_info))
goto Exit;
}
/* Implement any other needed search cases */
p_port = osm_get_port_by_guid(sa->p_subn, p_rem_sm->smi.guid);
if (p_port == NULL) {
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2810: "
"No port for remote sm\n");
goto Exit;
}
smir_rcv_new_smir(sa, p_port, p_ctxt->p_list,
p_rem_sm->smi.guid, p_rem_sm->smi.act_count,
p_rem_sm->smi.pri_state, p_req_physp);
Exit:
OSM_LOG_EXIT(sa->p_log);
}
void osm_smir_rcv_process(IN void *ctx, IN void *data)
{
osm_sa_t *sa = ctx;
osm_madw_t *p_madw = data;
const ib_sa_mad_t *sad_mad;
const ib_sminfo_record_t *p_rcvd_rec;
const osm_port_t *p_port = NULL;
const ib_sm_info_t *p_smi;
cl_qlist_t rec_list;
osm_smir_search_ctxt_t context;
ib_api_status_t status = IB_SUCCESS;
ib_net64_t comp_mask;
ib_net64_t port_guid;
osm_physp_t *p_req_physp;
osm_port_t *local_port;
osm_remote_sm_t *p_rem_sm;
cl_qmap_t *p_sm_guid_tbl;
uint8_t pri_state;
CL_ASSERT(sa);
OSM_LOG_ENTER(sa->p_log);
CL_ASSERT(p_madw);
sad_mad = osm_madw_get_sa_mad_ptr(p_madw);
p_rcvd_rec = (ib_sminfo_record_t *) ib_sa_mad_get_payload_ptr(sad_mad);
comp_mask = sad_mad->comp_mask;
CL_ASSERT(sad_mad->attr_id == IB_MAD_ATTR_SMINFO_RECORD);
/* we only support SubnAdmGet and SubnAdmGetTable methods */
if (sad_mad->method != IB_MAD_METHOD_GET &&
sad_mad->method != IB_MAD_METHOD_GETTABLE) {
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2804: "
"Unsupported Method (%s)\n",
ib_get_sa_method_str(sad_mad->method));
osm_sa_send_error(sa, p_madw, IB_MAD_STATUS_UNSUP_METHOD_ATTR);
goto Exit;
}
/* update the requester physical port */
p_req_physp = osm_get_physp_by_mad_addr(sa->p_log, sa->p_subn,
osm_madw_get_mad_addr_ptr
(p_madw));
if (p_req_physp == NULL) {
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2803: "
"Cannot find requester physical port\n");
goto Exit;
}
if (OSM_LOG_IS_ACTIVE_V2(sa->p_log, OSM_LOG_DEBUG)) {
OSM_LOG(sa->p_log, OSM_LOG_DEBUG,
"Requester port GUID 0x%" PRIx64 "\n",
cl_ntoh64(osm_physp_get_port_guid(p_req_physp)));
osm_dump_sm_info_record_v2(sa->p_log, p_rcvd_rec, FILE_ID, OSM_LOG_DEBUG);
}
p_smi = &p_rcvd_rec->sm_info;
cl_qlist_init(&rec_list);
context.p_rcvd_rec = p_rcvd_rec;
context.p_list = &rec_list;
context.comp_mask = sad_mad->comp_mask;
context.sa = sa;
context.p_req_physp = p_req_physp;
cl_plock_acquire(sa->p_lock);
/*
If the user specified a LID, it obviously narrows our
work load, since we don't have to search every port
*/
if (comp_mask & IB_SMIR_COMPMASK_LID) {
p_port = osm_get_port_by_lid(sa->p_subn, p_rcvd_rec->lid);
if (!p_port) {
status = IB_NOT_FOUND;
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2806: "
"No port found with LID %u\n",
cl_ntoh16(p_rcvd_rec->lid));
}
}
if (status == IB_SUCCESS) {
/* Handle our own SM first */
local_port = osm_get_port_by_guid(sa->p_subn,
sa->p_subn->sm_port_guid);
if (!local_port) {
cl_plock_release(sa->p_lock);
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2809: "
"No port found with GUID 0x%016" PRIx64 "\n",
cl_ntoh64(sa->p_subn->sm_port_guid));
goto Exit;
}
if (!p_port || local_port == p_port) {
if (FALSE ==
osm_physp_share_pkey(sa->p_log, p_req_physp,
local_port->p_physp,
sa->p_subn->opt.allow_both_pkeys)) {
cl_plock_release(sa->p_lock);
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2805: "
"Cannot get SMInfo record due to pkey violation\n");
goto Exit;
}
/* Check that other search components specified match */
if ((comp_mask & IB_SMIR_COMPMASK_GUID) &&
sa->p_subn->sm_port_guid != p_smi->guid)
goto Remotes;
if ((comp_mask & IB_SMIR_COMPMASK_PRIORITY) &&
sa->p_subn->opt.sm_priority !=
ib_sminfo_get_priority(p_smi))
goto Remotes;
if ((comp_mask & IB_SMIR_COMPMASK_SMSTATE) &&
sa->p_subn->sm_state != ib_sminfo_get_state(p_smi))
goto Remotes;
/* Now, add local SMInfo to list */
pri_state = sa->p_subn->sm_state & 0x0F;
pri_state |= (sa->p_subn->opt.sm_priority & 0x0F) << 4;
smir_rcv_new_smir(sa, local_port, context.p_list,
sa->p_subn->sm_port_guid,
cl_ntoh32(sa->p_subn->p_osm->stats.
qp0_mads_sent), pri_state,
p_req_physp);
}
Remotes:
if (p_port && p_port != local_port) {
/* Find remote SM corresponding to p_port */
port_guid = osm_port_get_guid(p_port);
p_sm_guid_tbl = &sa->p_subn->sm_guid_tbl;
p_rem_sm =
(osm_remote_sm_t *) cl_qmap_get(p_sm_guid_tbl,
port_guid);
if (p_rem_sm !=
(osm_remote_sm_t *) cl_qmap_end(p_sm_guid_tbl))
sa_smir_by_comp_mask(sa, p_rem_sm, &context);
else
OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 280A: "
"No remote SM for GUID 0x%016" PRIx64
"\n", cl_ntoh64(port_guid));
} else {
/* Go over all other known (remote) SMs */
cl_qmap_apply_func(&sa->p_subn->sm_guid_tbl,
sa_smir_by_comp_mask_cb, &context);
}
}
cl_plock_release(sa->p_lock);
osm_sa_respond(sa, p_madw, sizeof(ib_sminfo_record_t), &rec_list);
Exit:
OSM_LOG_EXIT(sa->p_log);
}
