5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 3130,3140 ****
          mutex_enter(&tx->lock);
  
          /* check to see if the slots are really there */
          avail = tx->mask - (tx->req - tx->done);
          if (unlikely(avail <=  MYRI10GE_MAX_SEND_DESC_TSO)) {
!                 atomic_add_32(&tx->stall, 1);
                  mutex_exit(&tx->lock);
                  return (EBUSY);
          }
  
          /* copy */
--- 3130,3140 ----
          mutex_enter(&tx->lock);
  
          /* check to see if the slots are really there */
          avail = tx->mask - (tx->req - tx->done);
          if (unlikely(avail <=  MYRI10GE_MAX_SEND_DESC_TSO)) {
!                 atomic_inc_32(&tx->stall);
                  mutex_exit(&tx->lock);
                  return (EBUSY);
          }
  
          /* copy */
*** 3371,3381 ****
           * message to fit.
           */
  
          if (avail < max_segs) {
                  err = EBUSY;
!                 atomic_add_32(&tx->stall_early, 1);
                  goto stall;
          }
  
          /* find out how long the frame is and how many segments it is */
          count = 0;
--- 3371,3381 ----
           * message to fit.
           */
  
          if (avail < max_segs) {
                  err = EBUSY;
!                 atomic_inc_32(&tx->stall_early);
                  goto stall;
          }
  
          /* find out how long the frame is and how many segments it is */
          count = 0;
*** 3636,3646 ****
          mutex_exit(&tx->lock);
          return (DDI_SUCCESS);
  
  late_stall:
          try_pullup = 0;
!         atomic_add_32(&tx->stall_late, 1);
  
  abort_with_handles:
          /* unbind and free handles from previous mblks */
          for (i = 0; i < count; i++) {
                  bp = tx_info[i].m;
--- 3636,3646 ----
          mutex_exit(&tx->lock);
          return (DDI_SUCCESS);
  
  late_stall:
          try_pullup = 0;
!         atomic_inc_32(&tx->stall_late);
  
  abort_with_handles:
          /* unbind and free handles from previous mblks */
          for (i = 0; i < count; i++) {
                  bp = tx_info[i].m;
*** 3669,3679 ****
          }
  
  stall:
          if (err != 0) {
                  if (err == EBUSY) {
!                         atomic_add_32(&tx->stall, 1);
                  } else {
                          MYRI10GE_ATOMIC_SLICE_STAT_INC(xmit_err);
                  }
          }
          return (err);
--- 3669,3679 ----
          }
  
  stall:
          if (err != 0) {
                  if (err == EBUSY) {
!                         atomic_inc_32(&tx->stall);
                  } else {
                          MYRI10GE_ATOMIC_SLICE_STAT_INC(xmit_err);
                  }
          }
          return (err);