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

MFC SVN rev 181093

2008-08-08T23:23:44Z

Implement ratelimiting for debug messages. For now, allow at most one message per second. In the future might add a sysctl knob for each socket family to fine tune this.

MFC: SVN rev 181089

2008-08-04T22:21:44Z

Increase maximum input queue size limit for raw Bluetooth HCI sockets.

MFC rev. 1.158

2008-05-17T08:45:58Z

Use separate UMA zone for data items allocation. It is a partial rev. 1.149 rework. It allows to save several percents of CPU time on SMP by using UMA's internal per-CPU allocation limits instead of own global variable each time updated with atomics. Also it restores NG_WAITOK flag processing. PR: kern/123741

MFC some small optimizations:

2008-04-20T11:34:56Z

rev. 1.151: Remove impossible (hk_peer == NULL) check. rev. 1.152: Remove ng_setisr() call from ng_dequeue(). rev. 1.153: There is no need to erase hook->hk_node before freeing hook. rev. 1.154: Use new atomic_fetchadd() primitive instead of looping atomic_cmpset(). rev. 1.158: ng_address_hook() microoptimization.

MFC ng_pptpgre.c rev. 1.41-1.42

2008-04-07T10:33:28Z

Rewrite node to support multiple hooks, alike to ng_l2tp, to use one pair of pptpgre and ksocket nodes for all calls between two peers. This patch modifies node's API by adding new "session_%04x" hook names support, while keeping backward compatibility.

MFC:

2008-03-18T17:39:42Z

Improve apply callback error reporting: Before this patch callback returned result of the last finished call chain. Now it returns last nonzero result from all call chain results in this request. As soon as this improvement gives reliable error reporting, it is now possible to remove dirty workaround in ng_socket, made to return ENOBUFS error statuses of request-response operations. That workaround was responsible for returning ENOBUFS errors to completely unrelated requests working at the same time on socket.

MFC rev. 1.25

2008-03-18T17:33:03Z

Add session ID hashing to speedup incoming packets dispatch in case of many connections working via the same tunnel. For example, in case of full "client <-> LAC <-> LNS" setup.

MFC rev. 1.23-1.24

2008-03-11T19:14:10Z

To avoid control data losses, do not acknowledge recieving of control packet if netgraph reported error while delivering to destination. Reset 'next send' counter to the last requested by peer on ack timeout, to resend all subsequest packets after lost one again without additional hints.

MFC rev. 1.61

2008-03-11T19:04:42Z

Send only one incoming notification at a time to reduce queue trashing and improve performance. Remove waitflag argument from ng_ksocket_incoming2(), it means nothing as function call was queued by netgraph. Remove node validity check, as node validity guarantied by netgraph. Update comments.

MFC: rev. 1.148-1.149

2008-03-10T20:38:56Z

Implement 128 items node name hash for faster name search. Increase node ID hash size from 32 to 128 items. Increase default queue items allocation limit from 512 to 4096 items to avoid terrible unpredicted effects for netgraph operation of their exhaustion while allocating control messages. Add separate configurable 512 items limit for data items allocation for DoS/overload protection.