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16 commits

Author SHA1 Message Date
Gleb Smirnoff d6bd5ec90c Remove goto. 2005-04-11 10:16:17 +00:00
Gleb Smirnoff 9818b82ff3 Add a possibility to bypass unmodified accounted data to special 
hook(s). Data received on these hook(s) is sent back to ifaceX hook(s).
 2005-03-22 15:49:22 +00:00
Gleb Smirnoff 2b38b68736 Refactor node so that it does not modify mbuf contents. Next step would 
be pass-thru mode, when traffic is not copied by ng_tee, but passed thru
ng_netflow.

Changes made:

- In ng_netflow_rcvdata() do all necessary pulluping: Ethernet header,
  IP header, and TCP/UDP header.
- Pass only pointer to struct ip to ng_netflow_flow_add(). Any TCP/UDP
  headers are guaranteed to by after it.
- Merge make_flow_rec() function into ng_netflow_flow_add().
 2005-03-21 15:40:25 +00:00
Gleb Smirnoff 1d03bd1684 Refactor node so that it does not modify mbuf contents. Next step would 
be pass-thru mode, when traffic is not copied by ng_tee, but passed thru
ng_netflow.

Changes made:

- In ng_netflow_rcvdata() do all necessary pulluping: Ethernet header,
  IP header, and TCP/UDP header.
- Pass only pointer to struct ip to ng_netflow_flow_add(). Any TCP/UDP
  headers are guaranteed to by after it.
- Merge make_flow_rec() function into ng_netflow_flow_add().
 2005-03-21 15:34:03 +00:00
Gleb Smirnoff 0e406d0f63 Plug item leak, which occured when m_pullup() failed. 2005-03-21 11:48:54 +00:00
Gleb Smirnoff c1249c6338 - Don't lose TCP flags of the first packet in a flow. 
- Don't account length of the first packet in a flow twice.
 2005-03-20 21:03:43 +00:00
Gleb Smirnoff 5fac4ee9ab Cisco uses milliseconds for uptime. This is stupid. Nobody cares of such 
precision when IP packet may travel through internet for several seconds.
Also uptime measured in milliseconds overflows every 48+ days.
But we have to do same to keep compatibility with Cisco and flow-tools.

Make a macro MILLIUPTIME, which does overflowable multiplication to 1000.

Requested by:	Sergey Ryabin, Oleg Bulyzhin
MFC after:	1 week
 2005-03-03 11:01:05 +00:00
Gleb Smirnoff d1240630b3 Expire aged flows in normal expiry thread. This fixes the problem, when 
a node disconnected from all sources of traffic never purges its cache.
 2005-02-05 10:00:04 +00:00
Gleb Smirnoff 020d3f61d8 Break long lines in code and comments. 2005-02-05 09:08:33 +00:00
Gleb Smirnoff 6aa1da2917 In case of various tunneling protocols, mbuf may pass several interfaces 
before entering ng_netflow. In this case it will have not NULL m_pkthdr.rcvif.
However, it will enter ng_iface soon with another index. So let in_ifIndex
value configured by user override m_pkthdr.rcvif.

Reported by:	Damir Bikmuhametov
MFC after:	1 week
 2005-02-01 14:07:05 +00:00
Gleb Smirnoff 18c54fe665 Use log() instead of printf(), to reduce flood on console. 
MFC after:	1 week
 2005-01-20 13:28:39 +00:00
Gleb Smirnoff 92d7d5b445 - Plug a memory leak in ng_netflow_cache_init(). 
- Initialize error to 0 in ng_netflow_flow_add() (a nop change).
- Update cache statistics holding workqueue mutex.

MFC after:	3 days
 2004-12-28 12:11:32 +00:00
Gleb Smirnoff 176119c455 - Use uint16_t to pass argument for NGM_NETFLOW_IFINFO, bump cookie. 
- Always check that index number passed from userland
  is <= NG_NETFLOW_MAXIFACES. [1]
- Increase NG_NETFLOW_MAXIFACES up to 512. [2]

Noticed by:	Roman Palagin [1]
Requested by:	Yuri Y. Bushmelev [2]
MFC after:	1 week
 2004-12-05 14:30:38 +00:00
Gleb Smirnoff 08e2a38eda Removed bogus comment. 2004-11-01 20:52:24 +00:00
Gleb Smirnoff 0b7925df73 - Remove advertising clause from copyright [1] 
- Change my email to glebius@FreeBSD.org

Requested by:	ru [1]
 2004-09-17 19:58:03 +00:00
Gleb Smirnoff a752e82d3a A netgraph node implementing Netflow version 5. 
Supported by:	Bestcom ISP, Rinet ISP
Approved by:	julian (mentor)
 2004-09-16 20:24:23 +00:00