Linux kernel modifications for the Kernel Hacking exam
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Marcelo Ricardo Leitner cc35c3d1ed sctp: do not retransmit upon FragNeeded if PMTU discovery is disabled
Currently, if PMTU discovery is disabled on a given transport, but the
configured value is higher than the actual PMTU, it is likely that we
will get some icmp Frag Needed. The issue is, if PMTU discovery is
disabled, we won't update the information and will issue a
retransmission immediately, which may very well trigger another ICMP,
and another retransmission, leading to a loop.

The fix is to simply not trigger immediate retransmissions if PMTU
discovery is disabled on the given transport.

Changes from v2:
- updated stale comment, noticed by Xin Long

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-08 14:19:13 -05:00
arch Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-23 11:53:04 -08:00
block
certs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-12-22 12:22:48 -08:00
Documentation sound fixes for 4.15-rc6 2017-12-27 12:59:27 -08:00
drivers xen-netfront: enable device after manual module load 2018-01-08 14:17:03 -05:00
firmware
fs Changes since last update: 2017-12-22 12:27:27 -08:00
include sh_eth: fix SH7757 GEther initialization 2018-01-05 13:59:18 -05:00
init Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-23 11:53:04 -08:00
ipc
kernel While doing tests on tracing over the network, I found that the packets 2017-12-27 13:06:57 -08:00
lib
mm Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-12-21 11:13:37 -08:00
net sctp: do not retransmit upon FragNeeded if PMTU discovery is disabled 2018-01-08 14:19:13 -05:00
samples
scripts
security
sound ALSA: hda - Fix missing COEF init for ALC225/295/299 2017-12-27 08:53:59 +01:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-28 23:20:21 -08:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: Update my email address. 2018-01-04 13:38:29 -05:00
Makefile Linux 4.15-rc5 2017-12-23 20:47:16 -08:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.