forked from osmocom/wireshark
677a1c6dc2
replace the existing checksummer with a modified version of the BSD checksumming code. Add a flag to the "packet_info" structure to indicate that a packet is the first fragment of a fragmented datagram, so that the checksummers won't try to checksum those. (It doesn't seem to add a lot of CPU overhead, so we don't introduce a flag to disable it, yet. Further checks may be necessary to see whether the overhead is just swamped by other overheads when scanning through a capture dissecting all frames, or if it truly is negligible.) Make the Boolean preference option controlling whether to make the top-level protocol tree item for TCP display a packet summary static to the TCP dissector (it doesn't need to be accessible outside the TCP dissector). svn path=/trunk/; revision=2751
15 lines
301 B
C
15 lines
301 B
C
/* in_cksum.h
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* Declaration of Internet checksum routine.
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*
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* $Id: in_cksum.h,v 1.1 2000/12/13 02:24:22 guy Exp $
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*/
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typedef struct {
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const guint8 *ptr;
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int len;
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} vec_t;
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extern int in_cksum(const vec_t *vec, int veclen);
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extern guint16 in_cksum_shouldbe(guint16 sum, guint16 computed_sum);
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