unimore/kernel-hacking-2024-linux-steffo: Linux kernel modifications for the Kernel Hacking exam

unimore/kernel-hacking-2024-linux-steffo

Linux kernel modifications for the Kernel Hacking exam

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Eric Dumazet e305845096 dctcp: more accurate tracking of packets delivery After commit `e21db6f69a` ("tcp: track total bytes delivered with ECN CE marks") core TCP stack does a very good job tracking ECN signals. The "sender's best estimate of CE information" Yuchung mentioned in his patch is indeed the best we can do. DCTCP can use tp->delivered_ce and tp->delivered to not duplicate the logic, and use the existing best estimate. This solves some problems, since current DCTCP logic does not deal with losses and/or GRO or ack aggregation very well. This also removes a dubious use of inet_csk(sk)->icsk_ack.rcv_mss (this should have been tp->mss_cache), and a 64 bit divide. Finally, we can see that the DCTCP logic, calling dctcp_update_alpha() for every ACK could be done differently, calling it only once per RTT. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Florian Westphal <fw@strlen.de> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Lawrence Brakmo <brakmo@fb.com> Cc: Abdul Kabbani <akabbani@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-04-11 21:31:03 -07:00
arch	xtensa fixes for v5.1-rc5	2019-04-08 17:04:42 -10:00
block	block: Revert v5.0 blk_mq_request_issue_directly() changes	2019-04-05 09:40:46 -06:00
certs
crypto
Documentation	ARM: SoC fixes	2019-04-07 13:46:17 -10:00
drivers	net: fec: manage ahb clock in runtime pm	2019-04-11 13:53:28 -07:00
fs	for-linus-20190407	2019-04-07 13:28:36 -10:00
include	net: netrom: Fix error cleanup path of nr_proto_init	2019-04-11 13:59:49 -07:00
init
ipc	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
kernel	Merge branch 'akpm' (patches from Andrew)	2019-04-05 17:08:55 -10:00
lib	Merge branch 'akpm' (patches from Andrew)	2019-04-05 17:08:55 -10:00
LICENSES
mm	slab: fix a crash by reading /proc/slab_allocators	2019-04-07 19:23:12 -10:00
net	dctcp: more accurate tracking of packets delivery	2019-04-11 21:31:03 -07:00
samples
scripts	fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock	2019-04-06 07:01:55 -10:00
security	KEYS: trusted: fix -Wvarags warning	2019-04-08 15:58:54 -07:00
sound	sound fixes for 5.1-rc3	2019-03-29 14:53:33 -07:00
tools	selftests: fib_tests: Fix 'Command line is not complete' errors	2019-04-11 14:17:59 -07:00
usr
virt	KVM/ARM fixes for 5.1	2019-03-28 19:07:30 +01:00
.clang-format	Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:43:42 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap	Update Nicolas Pitre's email address	2019-04-02 18:12:44 -10:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-04-08 17:10:46 -10:00
Makefile	Linux 5.1-rc4	2019-04-07 14:09:59 -10:00
README

README

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.