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Filename Latest commit message Latest commit date
Eric Dumazet 5424ea2739 netns: get more entropy from net_hash_mix()
struct net are effectively allocated from order-1 pages on x86,
with one object per slab, meaning that the 13 low order bits
of their addresses are zero.

Once shifted by L1_CACHE_SHIFT, this leaves 7 zero-bits,
meaning that net_hash_mix() does not help spreading
objects on various hash tables.

For example, TCP listen table has 32 buckets, meaning that
all netns use the same bucket for port 80 or port 443.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:59:56 +09:00
arch Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2018-06-19 07:44:51 +09:00
block for-linus-20180616 2018-06-17 05:37:55 +09:00
certs docs: Fix some broken references 2018-06-15 18:10:01 -03:00
crypto docs: Fix some broken references 2018-06-15 18:10:01 -03:00
Documentation Move all the dma-mapping code to kernel/dma 2018-06-20 16:30:01 +09:00
drivers net: drivers/net: Convert random_ether_addr to eth_random_addr 2018-06-23 10:49:14 +09:00
firmware
fs proc: fix missing final NUL in get_mm_cmdline() rewrite 2018-06-20 15:38:28 +09:00
include netns: get more entropy from net_hash_mix() 2018-06-23 10:59:56 +09:00
init
ipc rhashtable: split rhashtable.h 2018-06-22 13:43:27 +09:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-21 07:13:42 +09:00
lib rhashtable: clean up dereference of ->future_tbl. 2018-06-22 13:43:28 +09:00
LICENSES
mm revert "mm/memblock: add missing include <linux/bootmem.h>" 2018-06-19 07:43:44 +09:00
net net: drivers/net: Convert random_ether_addr to eth_random_addr 2018-06-23 10:49:14 +09:00
samples
scripts scripts/documentation-file-ref-check: check tools/*/Documentation 2018-06-15 18:10:01 -03:00
security docs: Fix some broken references 2018-06-15 18:10:01 -03:00
sound docs: Fix some broken references 2018-06-15 18:10:01 -03:00
tools selftests: rtnetlink: use a local IP address for IPsec tests 2018-06-22 13:47:55 +09:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS rhashtable: split rhashtable.h 2018-06-22 13:43:27 +09:00
Makefile Linux 4.18-rc1 2018-06-17 08:04:49 +09:00
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.
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.