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Note that NetScaler trace files are page-oriented, with records not 

split across page boundaries, rather than being a byte stream, and that
the last page may be short.

Fix some comments.

svn path=/trunk/; revision=50025
This commit is contained in:
Guy Harris 2013-06-18 23:37:30 +00:00
parent b4c6e0eb1c
commit 81b9276b24
1 changed files with 16 additions and 4 deletions
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20
wiretap/netscaler.c
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@ -37,6 +37,14 @@
#define NSPR_SIGSTR_V21 "NetScaler V21 Performance Data"
#define NSPR_SIGSTR_V22 "NetScaler V22 Performance Data"
/*
* NetScaler trace files are divided into 8K pages, with each page
* containing one or more records. The last page of the file
* might be less than 8K bytes.
*
* Records are not split across page boundaries. A page might have
* an "unused space" record at the end.
*/
#define NSPR_PAGESIZE 8192
/* The different record types
@ -64,10 +72,10 @@
/* The high resolution relative time format.
** The MS 2 bits of the high resoltion time is defined as follows:
** 00 : time value is in second
** 01 : time value is in mili second
** 10 : time value is in micro second
** 11 : time value is in nano second
** 00 : time value is in seconds
** 01 : time value is in milliseconds
** 10 : time value is in microseconds
** 11 : time value is in nanoseconds
*/
#define NSPR_HRTIME_MASKTM 0x3FFFFFFF /* mask to get time value */
#define NSPR_HRTIME_MASKFMT 0xC0000000 /* time value format mask */
@ -581,6 +589,10 @@ static gboolean nstrace_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
const guint8 *pd, int *err);
/*
* Minimum of the page size and the amount of data left in the file;
* the last page of a file can be short.
*/
#define GET_READ_PAGE_SIZE(remaining_file_size) ((gint32)((remaining_file_size>NSPR_PAGESIZE)?NSPR_PAGESIZE:remaining_file_size))