aboutsummaryrefslogtreecommitdiffstats
path: root/doc
diff options
context:
space:
mode:
authorJoão Valverde <j@v6e.pt>2022-04-13 14:07:01 +0100
committerA Wireshark GitLab Utility <gerald+gitlab-utility@wireshark.org>2022-04-14 13:07:41 +0000
commitcef02cc3a0fdfd7ed7ac35fcae42a158ef618a31 (patch)
tree9520dcd9eb2bec34c60170c04aaf241cda4b06ce /doc
parent827d143e6e6e75fe8e438ba7493df7e02aa5503b (diff)
dfilter: Add max()/min() tests and documentation
Diffstat (limited to 'doc')
-rw-r--r--doc/wireshark-filter.adoc5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/wireshark-filter.adoc b/doc/wireshark-filter.adoc
index 302477032a..e46dcbbe13 100644
--- a/doc/wireshark-filter.adoc
+++ b/doc/wireshark-filter.adoc
@@ -128,6 +128,8 @@ The filter language has the following functions:
len(field) - returns the byte length of a string or bytes field
count(field) - returns the number of field occurrences in a frame
string(field) - converts a non-string field to string
+ max(f1,...,fn) - return the maximum value
+ min(f1,...,fn) - return the minimum value
upper() and lower() are useful for performing case-insensitive string
comparisons. For example:
@@ -144,6 +146,9 @@ byte fields. For example:
gives you all the odd packets.
+max() and min() take any number of arguments and returns one value, respectively
+the largest/smallest. The arguments must all have the same type.
+
=== Protocol field types
Each protocol field is typed. The types are: