src-test2/sys/netgraph/netflow, branch releng/6.4

Revert previous commit.

2008-02-03T10:30:45Z

glebius@ noticed that it was not a bug, but undocumented feature.

MFC rev. 1.15

2008-02-02T15:56:32Z

Run expire even without export hook connected.

MFC rev. 1.26-1.27

2008-01-28T19:46:17Z

Remove one very strange unneded if. Fix memory leak when export hook is not connected.

MFC 1.20 - 1.24:

2007-01-25T21:39:00Z

- Use bitcount32() from sys/systm.h instead of my own. - Use hash functions with better distribution. - Break long line.

MFC 1.13:

2007-01-25T21:35:43Z

Recognize 802.1q frames in Ethernet input and process them. PR: kern/101162 Submitted by: CoolDavid (Tseng Guo-Fu)

MFC rev. 1.19 netflow.c: set to zero engine_type, engine_id and

2006-05-01T20:07:38Z

pad (cisco calls it sampling_interval) fields in netflow v5 header. MFC rev. 1.4 netflow.h: replace disappeared URLs to Cisco docs by new ones, style. Approved by: re (kensmith)

MFC 1.9:

2006-02-16T12:37:14Z

- Increase maximum number of interfaces to 2048. - Regroup softc so that frequently used elements are grouped in the beginning, while the interfaces array is at the end. Approved by: re (kensmith)

MFC 1.12:

2006-01-21T10:11:01Z

Correct off-by-one errors. Found with: Coverity Prevent(tm)

MFC 1.18:

2006-01-21T10:09:18Z

When sending export datagram from interrupt thread, use NG_QUEUE in flags. When sending export datagram from expiry thread, then use default zero flags. This removes unpleasant contention of the interrupt thread on mutexes (usually ng_ksocket's socket buffer mutex).

MFC 1.8:

2006-01-21T10:06:15Z

Mark appropriate commands with NGM_READONLY and NGM_HASREPLY and bump type cookie. This fixes flowctl(8) exiting without any output under high load on SMP.