9994 cxgbe t4nex: Handle get_fl_payload() alloc failures
9995 cxgbe t4_devo_attach() should initialize ->sfl

*** 279,288 ****
--- 279,289 ----
          uint32_t offset;        /* current packet within the larger buffer */
          uint16_t copy_threshold; /* anything this size or less is copied up */
  
          uint64_t copied_up;     /* # of frames copied into mblk and handed up */
          uint64_t passed_up;     /* # of frames wrapped in mblk and handed up */
+         uint64_t allocb_fail;   /* # of mblk allocation failures */
  
          TAILQ_ENTRY(sge_fl) link; /* All starving freelists */
  };
  
  /* txq: SGE egress queue + miscellaneous items */