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83beeed993
freebsd-dev/sys/netgraph
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Gleb Smirnoff 83beeed993 Rework locking, that I have introduced recently, since it was incorrect: 
First, mutexed callouts are incompatible with netgraph nodes, because
  netgraph(4) can guarantee that the function will be called with mutex
  held.

  Second, nodes should not send data to their neighbor holding their
  mutex. A node does not know what stack can it enter sending data in
  some direction. May be executing will encounter a place to sleep.

New locking:

  - ng_pptpgre_recv() and ng_pptpgre_xmit() must be entered with mutex held.
  - ng_pptpgre_recv() and ng_pptpgre_xmit() unlock mutex before
    sending data and then return unlocked.
  - callout routines acquire mutex themselves.
2005-09-08 14:26:23 +00:00
..
atm Use the ISO standard function variable vs. a GCC'ism. 2005-08-10 06:25:41 +00:00
bluetooth Fix dangling callout problem in the Bluetooth L2CAP code that leads to 2005-08-31 18:13:23 +00:00
netflow Check that we have first fragment before pulling up TCP/UDP header. 2005-07-17 08:09:59 +00:00
netgraph.h Add ng_callout_ini_mtx() macro. 2005-08-30 09:44:54 +00:00
ng_async.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_async.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_atmllc.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_atmllc.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_base.c Fix build. 2005-09-06 20:36:38 +00:00
ng_bpf.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_bpf.h Fix typo in a comment. 2005-02-12 18:10:26 +00:00
ng_bridge.c In revision 1.29 timeout() was converted to ng_callout(). 2005-02-09 15:14:44 +00:00
ng_bridge.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_cisco.c NG_MKRESPONSE() macro includes sizeof struct ng_mesg when doing allocation. 2005-04-13 14:03:28 +00:00
ng_cisco.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_device.c Change m_uiotombuf so it will accept offset at which data should be copied 2005-05-04 18:55:03 +00:00
ng_device.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_echo.c - Return error, if there was one. 2005-04-15 10:14:00 +00:00
ng_echo.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_eiface.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
ng_eiface.h Added ASCII version of the NGM_EIFACE_GET_IFNAME message, "getifname". 2005-02-03 11:52:42 +00:00
ng_etf.c Remove ng_connect_t where it is unused. Probably it remained from ng_source.c. 2005-03-14 20:49:48 +00:00
ng_etf.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_ether.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
ng_ether.h Add new netgraph control message NGM_ETHER_DETACH, which actually 2005-02-14 12:01:09 +00:00
ng_fec.c Make sure ng_fec_init() uses the same calling convention as the rest of 2005-08-25 17:00:02 +00:00
ng_fec.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_frame_relay.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_frame_relay.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_gif_demux.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_gif_demux.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_gif.c Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
ng_gif.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_hole.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_hole.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_hub.c Having moved metadata usage to mbuf tags, remove code that supports 2004-06-26 22:24:16 +00:00
ng_hub.h A simple packet distribution node type that acts like an Ethernet hub. 2004-04-17 12:42:17 +00:00
ng_iface.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
ng_iface.h Bump cookie value to reflect change in NGM_IFACE_GET_IFNAME semantics. 2005-02-13 16:36:41 +00:00
ng_ip_input.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_ip_input.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_ipfw.c Fix check for leading zero, so that it does not block two zeroes 2005-05-29 12:20:41 +00:00
ng_ipfw.h Add a ng_ipfw node, implementing a quick and simple interface between 2005-02-05 12:06:33 +00:00
ng_ksocket.c When we read data from socket buffer using soreceive() the socket layer 2005-09-06 17:15:42 +00:00
ng_ksocket.h When netgraph(4) was converted to use mbuf_tags(9) instead of meta-data 2005-02-12 14:54:19 +00:00
ng_l2tp.c Use the ISO standard function variable vs. a GCC'ism. 2005-08-10 06:25:41 +00:00
ng_l2tp.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_lmi.c Refer to the mbuf header length field via the official method. 2005-06-09 10:27:27 +00:00
ng_lmi.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_message.h Add macro NG_COPYMESSAGE(), which allocates memory and creates a 2005-04-20 12:18:22 +00:00
ng_mppc.c MPPC node is not thread safe. 2005-06-03 09:06:00 +00:00
ng_mppc.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_nat.c - After LibAlias processing check for TCP packet with th_x2 field 2005-06-27 07:39:13 +00:00
ng_nat.h ng_nat - a netgraph(4) node, which does NAT 2005-05-05 23:41:21 +00:00
ng_one2many.c Fix getting stats from many links with index > 0. 2005-03-11 10:29:38 +00:00
ng_one2many.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_parse.c Fixed parsing of unsigned integers. 2005-08-02 20:05:37 +00:00
ng_parse.h Fix variable name in comment num=>alen. (Lost part of commit rev 1.2) 2005-01-16 19:12:27 +00:00
ng_ppp.c Refactor places where ng_package_data() failed. 2005-05-16 19:12:57 +00:00
ng_ppp.h Fix incorrect comment. 2005-02-10 02:43:26 +00:00
ng_pppoe.c Remove obsoleted sysctl interface for switching between standard and 3Com 2005-07-05 17:51:02 +00:00
ng_pppoe.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_pptpgre.c Rework locking, that I have introduced recently, since it was incorrect: 2005-09-08 14:26:23 +00:00
ng_pptpgre.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_rfc1490.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_rfc1490.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_sample.c Whitespace. 2005-02-06 19:24:59 +00:00
ng_sample.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_socket.c Fix missing '=' in structure initialization. 2005-07-23 19:28:51 +00:00
ng_socket.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_socketvar.h In the splnet times, netgraph was functional and synchronous. Nowadays, 2005-07-05 17:35:20 +00:00
ng_source.c Major overhaul and cleanup of ng_source node. 2005-04-05 17:22:05 +00:00
ng_source.h Major overhaul and cleanup of ng_source node. 2005-04-05 17:22:05 +00:00
ng_split.c Plug item leak in case when not all hooks are connected. 2005-08-29 13:47:08 +00:00
ng_split.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_sppp.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
ng_sppp.h Parse "getifname" using the standard parse string type. 2005-02-03 13:03:31 +00:00
ng_tcpmss.c - Remove redundant parenthesis in M_CHECK macro. 2005-06-10 12:44:21 +00:00
ng_tcpmss.h Add ng_tcpmss node, which alters MSS options of TCP packets. Useful to 2005-06-10 08:02:34 +00:00
ng_tee.c Update statistics only in case if delivery was successfull. 2005-06-07 12:22:13 +00:00
ng_tee.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_tty.c Locking and cleanup of tty netgraph node. Tty stack is Giant-locked, 2005-01-13 07:43:12 +00:00
ng_tty.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_UI.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_UI.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_vjc.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_vjc.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ng_vlan.c When netgraph flow control message comes from downstream, broadcast 2005-04-20 14:19:20 +00:00
ng_vlan.h Netgraph node type for IEEE 802.1Q VLAN tagging. 2004-03-01 17:22:16 +00:00
NOTES