kernel.git/Documentation/networking/ip-sysctl.rst, branch linux-5.8.y

icmp: randomize the global rate limiter

2020-10-29T09:07:05Z

[ Upstream commit b38e7819cae946e2edf869e604af1e65a5d241c5 ] Keyu Man reported that the ICMP rate limiter could be used by attackers to get useful signal. Details will be provided in an upcoming academic publication. Our solution is to add some noise, so that the attackers no longer can get help from the predictable token bucket limiter. Fixes: 4cdf507d5452 ("icmp: add a global rate limitation") Signed-off-by: Eric Dumazet Reported-by: Keyu Man Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

Documentation: networking: ip-sysctl: drop doubled word

2020-07-05T00:46:21Z

Drop the doubled word "that". Signed-off-by: Randy Dunlap Cc: Jonathan Corbet Cc: linux-doc@vger.kernel.org Cc: "David S. Miller" Cc: Jakub Kicinski Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller

ipv6: Implement draft-ietf-6man-rfc4941bis

2020-05-07T00:00:02Z

Implement the upcoming rev of RFC4941 (IPv6 temporary addresses): https://tools.ietf.org/html/draft-ietf-6man-rfc4941bis-09 * Reduces the default Valid Lifetime to 2 days The number of extra addresses employed when Valid Lifetime was 7 days exacerbated the stress caused on network elements/devices. Additionally, the motivation for temporary addresses is indeed privacy and reduced exposure. With a default Valid Lifetime of 7 days, an address that becomes revealed by active communication is reachable and exposed for one whole week. The only use case for a Valid Lifetime of 7 days could be some application that is expecting to have long lived connections. But if you want to have a long lived connections, you shouldn't be using a temporary address in the first place. Additionally, in the era of mobile devices, general applications should nevertheless be prepared and robust to address changes (e.g. nodes swap wifi <-> 4G, etc.) * Employs different IIDs for different prefixes To avoid network activity correlation among addresses configured for different prefixes * Uses a simpler algorithm for IID generation No need to store "history" anywhere Signed-off-by: Fernando Gont Signed-off-by: David S. Miller

tcp: add hrtimer slack to sack compression

2020-04-30T20:24:01Z

Add a sysctl to control hrtimer slack, default of 100 usec. This gives the opportunity to reduce system overhead, and help very short RTT flows. Signed-off-by: Eric Dumazet Acked-by: Soheil Hassas Yeganeh Acked-by: Neal Cardwell Signed-off-by: David S. Miller

docs: networking: convert tcp-thin.txt to ReST

2020-04-30T19:56:38Z

Not much to be done here: - add SPDX header; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: David S. Miller

docs: networking: convert ip-sysctl.txt to ReST

2020-04-28T21:40:18Z

- add SPDX header; - adjust titles and chapters, adding proper markups; - mark code blocks and literals as such; - mark lists as such; - mark tables as such; - use footnote markup; - adjust identation, whitespaces and blank lines; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: David S. Miller