On Feb 8, 2019, at 2:54 AM, Greg KH gregkh@linuxfoundation.org wrote:
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 2ea4c45cf1c8..7c229f59016f 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -112,14 +112,11 @@ min_adv_mss - INTEGER
IP Fragmentation:
-ipfrag_high_thresh - INTEGER
- Maximum memory used to reassemble IP fragments. When
- ipfrag_high_thresh bytes of memory is allocated for this purpose,
- the fragment handler will toss packets until ipfrag_low_thresh
- is reached. This also serves as a maximum limit to namespaces
- different from the initial one.
-ipfrag_low_thresh - INTEGER +ipfrag_high_thresh - LONG INTEGER
- Maximum memory used to reassemble IP fragments.
+ipfrag_low_thresh - LONG INTEGER
- (Obsolete since linux-4.17)
It seems very strange to say that it is obsolete since 4.17 in a 4.4 kernel.
Maximum memory used to reassemble IP fragments before the kernel begins to remove incomplete fragment queues to free up resources. The kernel still accepts new fragments for defragmentation.
-- Mark Rustad, MRustad@gmail.com