Changeset c0506ea for lib/libtrace_int.h

Timestamp:

09/20/11 14:21:53 (11 years ago)

Author:

Shane Alcock <salcock@…>

Branches:

4.0.1-hotfixes, cachetimestamps, develop, dpdk-ndag, etsilive, getfragoff, help, libtrace4, master, ndag_format, pfring, rc-4.0.1, rc-4.0.2, rc-4.0.3, rc-4.0.4, ringdecrementfix, ringperformance, ringtimestampfixes

Children:

c0ccccd

Parents:

2cf2c2d

Message:

• We now use pcap_create and pcap_activate for pcap interfaces if libpcap 1.0 or later is available. This doesn't seem to make much of a difference performance-wise, as pcap_open_live was updated to use these functions anyway. This means if mmapped packet capture is available, we would have used it via pcap_open_live anyway.
• Added a new function (trace_interrupt). Calling this function will set an internal variable which can be used to cause any blocking read_packet function to exit with an EOF. Useful for programs that are handling signals themselves and need a way to tell libtrace to stop. Prior to this, programs like tracestats would not exit on Ctrl-C if reading from a pcap interface which was not receiving any packets.
• Updated pcap interface format to respond to trace_interrupt.
• Optimising trace_apply_filter to minimise calls to trace_get_link_type and trace_get_packet_buffer.
• Removed unused extern variable "form" from libtrace_int.h
• Fixed bug with filters in the pcap interface format which would result in "invalid BPF program" error message when filter was definitely legit.
• Updated version number to 3.0.13

File:

• lib/libtrace_int.h (modified) (1 diff)

lib/libtrace_int.h

@@ -762 +762 @@
 
 /** The list of registered capture formats */
-extern struct libtrace_format_t *form;
+//extern struct libtrace_format_t *form;
+
+/** Specifies whether any blocking packet readers should cease reading 
+ * immediately
+ */
+extern int libtrace_halt;
 
 /** Registers a new capture format module.