iscsit_tpg_lookup_locked
iscsit_tpg_lookup_locked(char *tpg_name);
tpg = iscsit_tpg_lookup_locked(cfg_tpgt->tpgt_tpg_name);
tpg = iscsit_tpg_lookup_locked(cfg_tpg->tpg_name);
result = iscsit_tpg_lookup_locked(tpg_name);