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[lwip-devel] [patch #9847] Fixes in IPv4 autoip
From: |
Sathish M |
Subject: |
[lwip-devel] [patch #9847] Fixes in IPv4 autoip |
Date: |
Wed, 28 Aug 2019 00:54:51 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36 |
URL:
<https://savannah.nongnu.org/patch/?9847>
Summary: Fixes in IPv4 autoip
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: sathishm6
Submitted on: Wed 28 Aug 2019 04:54:50 AM UTC
Category: IPv4
Priority: 5 - Normal
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
_______________________________________________________
Details:
This patch fixes following issues in autoip.
1) Corrected the condition for limiting the probe interval to match RFC
3927, Section 2.2.1.
2) Added fixes in autoip_stop() to avoid memory leak during autoip_start()
-> autoip_stop() sequence.
Additional Details:
1. Fixed bug in max conflict rate limiting.
- According to RFC section RFC 3927 Section 2.2.1 conflict probe
interval
should be increased to RATE_LIMIT_INTERVAL (60 seconds), after
conflict count reaches
MAX_CONFLICTS (i.e., 10) counts.
- The initial value of 'autoip->tried_llipaddr' is 0. Hence the probe
interval (i.e., autoip->ttw) should be increased to
RATE_LIMIT_INTERVAL (60 secs)
when the condition becomes 'autoip->tried_llipaddr >= MAX_CONFLICTS'
2. Added code to free 'autoip' client in autoip_stop() API.
- 'autoip' client is allocated in autoip_start() API, this client is
not
freed during autoip_stop() or in any other part of the code.
- Updated autoip_stop() API to release the memory allocated for 'autoip'
client during start.
Tag used as a base revision to apply the fix: : STABLE-2_1_2_RELEASE
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Wed 28 Aug 2019 04:54:50 AM UTC Name: autoip_fix.patch Size: 3KiB
By: sathishm6
Patch file with autoip fixes
<http://savannah.nongnu.org/patch/download.php?file_id=47402>
_______________________________________________________
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