3866 panic in idm module
3867 stmfCreateLu failed: GUID_IN_USE
3868 iscsi target not accepting any new connections
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Jeremy Jones <jeremy@delphix.com>
Reviewed by: Eric Diven <eric.diven@delphix.com>

*** 6107,6126 ****
          struct timeval32 timestamp32;
          uint32_t *t = (uint32_t *)&timestamp32;
          struct ether_addr mac;
          uint8_t *e = (uint8_t *)&mac;
          int hid = (int)host_id;
  
          if (company_id == COMPANY_ID_NONE)
                  company_id = COMPANY_ID_SUN;
  
          if (lu_id->ident_length != 0x10)
                  return (STMF_INVALID_ARG);
  
          p = (uint8_t *)lu_id;
  
!         atomic_add_16(&stmf_lu_id_gen_number, 1);
  
          p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10;
          p[4] = ((company_id >> 20) & 0xf) | 0x60;
          p[5] = (company_id >> 12) & 0xff;
          p[6] = (company_id >> 4) & 0xff;
--- 6107,6127 ----
          struct timeval32 timestamp32;
          uint32_t *t = (uint32_t *)&timestamp32;
          struct ether_addr mac;
          uint8_t *e = (uint8_t *)&mac;
          int hid = (int)host_id;
+         uint16_t gen_number;
  
          if (company_id == COMPANY_ID_NONE)
                  company_id = COMPANY_ID_SUN;
  
          if (lu_id->ident_length != 0x10)
                  return (STMF_INVALID_ARG);
  
          p = (uint8_t *)lu_id;
  
!         gen_number = atomic_add_16_nv(&stmf_lu_id_gen_number, 1);
  
          p[0] = 0xf1; p[1] = 3; p[2] = 0; p[3] = 0x10;
          p[4] = ((company_id >> 20) & 0xf) | 0x60;
          p[5] = (company_id >> 12) & 0xff;
          p[6] = (company_id >> 4) & 0xff;
*** 6137,6148 ****
          }
          bcopy(e, p+8, 6);
          uniqtime32(&timestamp32);
          *t = BE_32(*t);
          bcopy(t, p+14, 4);
!         p[18] = (stmf_lu_id_gen_number >> 8) & 0xff;
!         p[19] = stmf_lu_id_gen_number & 0xff;
  
          return (STMF_SUCCESS);
  }
  
  /*
--- 6138,6149 ----
          }
          bcopy(e, p+8, 6);
          uniqtime32(&timestamp32);
          *t = BE_32(*t);
          bcopy(t, p+14, 4);
!         p[18] = (gen_number >> 8) & 0xff;
!         p[19] = gen_number & 0xff;
  
          return (STMF_SUCCESS);
  }
  
  /*