Bosko Milekic 181d2a1564 Add nmbcnt sysctl and make it tunable at boottime; nmbcnt is the
number of ext_buf counters that are possibly allocatable.

Do this because:

  (i) It will make it easier to influence EXT_COUNTERS for if_sk,
      if_ti (or similar) users where the driver allocates its own
      ext_bufs and where it is important for the mbuf system to take
      it into account when reserving necessary space for counters.

  (ii) Facilitate some percentile calculation for netstat(1)
2000-10-15 06:24:07 +00:00
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