kernel/git/stable/linux.git/Documentation/networking, branch linux-5.13.y

tcp: disable TFO blackhole logic by default

2021-07-28T12:37:33+00:00

[ Upstream commit 213ad73d06073b197a02476db3a4998e219ddb06 ] Multiple complaints have been raised from the TFO users on the internet stating that the TFO blackhole logic is too aggressive and gets falsely triggered too often. (e.g. https://blog.apnic.net/2021/07/05/tcp-fast-open-not-so-fast/) Considering that most middleboxes no longer drop TFO packets, we decide to disable the blackhole logic by setting /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_set to 0 by default. Fixes: cf1ef3f0719b4 ("net/tcp_fastopen: Disable active side TFO in certain scenarios") Signed-off-by: Wei Wang Signed-off-by: Eric Dumazet Acked-by: Neal Cardwell Acked-by: Soheil Hassas Yeganeh Acked-by: Yuchung Cheng Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

docs: networking: device_drivers: fix bad usage of UTF-8 chars

2021-05-11T17:00:18+00:00

Probably because the original file was pre-processed by some tool, both i40e.rst and iavf.rst files are using this character: - U+2013 ('–'): EN DASH meaning an hyphen when calling a command line application, which is obviously wrong. So, replace them by an hyphen, ensuring that it will be properly displayed as literals when building the documentation. Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/95eb2a48d0ca3528780ce0dfce64359977fa8cb3.1620744606.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet

Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2021-04-28T18:59:31+00:00

Daniel Borkmann says: ==================== pull-request: bpf-next 2021-04-28 The main changes are: 1) Add link detach and following re-attach for trampolines, from Jiri Olsa. 2) Use kernel's "binary printf" lib for formatted output BPF helpers (which avoids the needs for variadic argument handling), from Florent Revest. 3) Fix verifier 64 to 32 bit min/max bound propagation, from Daniel Borkmann. 4) Convert cpumap to use netif_receive_skb_list(), from Lorenzo Bianconi. 5) Add generic batched-ops support to percpu array map, from Pedro Tammela. 6) Various CO-RE relocation BPF selftests fixes, from Andrii Nakryiko. 7) Misc doc rst fixes, from Hengqi Chen. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: bpf, selftests: Update array map tests for per-cpu batched ops bpf: Add batched ops support for percpu array bpf: Implement formatted output helpers with bstr_printf seq_file: Add a seq_bprintf function bpf, docs: Fix literal block for example code bpf, cpumap: Bulk skb using netif_receive_skb_list bpf: Fix propagation of 32 bit unsigned bounds from 64 bit bounds bpf: Lock bpf_trace_printk's tmp buf before it is written to selftests/bpf: Fix core_reloc test runner selftests/bpf: Fix field existence CO-RE reloc tests selftests/bpf: Fix BPF_CORE_READ_BITFIELD() macro libbpf: Support BTF_KIND_FLOAT during type compatibility checks in CO-RE selftests/bpf: Add remaining ASSERT_xxx() variants selftests/bpf: Use ASSERT macros in lsm test selftests/bpf: Test that module can't be unloaded with attached trampoline selftests/bpf: Add re-attach test to lsm test selftests/bpf: Add re-attach test to fexit_test selftests/bpf: Add re-attach test to fentry_test bpf: Allow trampoline re-attach for tracing and lsm programs ==================== Link: https://lore.kernel.org/r/20210427233740.22238-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski

docs: networking: timestamping: update for DSA switches

2021-04-27T21:10:15+00:00

Update timestamping doc for DSA switches to describe current implementation accurately. On TX, the skb cloning is no longer in DSA generic code. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Signed-off-by: David S. Miller

bpf, docs: Fix literal block for example code

2021-04-27T15:31:09+00:00

Add a missing colon so that the code block followed can be rendered properly. Signed-off-by: Hengqi Chen Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20210424021208.832116-1-hengqi.chen@gmail.com

can: add a note that RECV_OWN_MSGS frames are subject to filtering

2021-04-24T12:36:51+00:00

Some parts of the documentation may lead the reader to think that the socket's own frames are always received when CAN_RAW_RECV_OWN_MSGS is enabled, but all frames are subject to filtering. As explained by Marc Kleine-Budde: On TX complete of a CAN frame it's pushed into the RX path of the networking stack, along with the information of the originating socket. Then the CAN frame is delivered into AF_CAN, where it is passed on to all registered receivers depending on filters. One receiver is the sending socket in CAN_RAW. Then in CAN_RAW the it is checked if the sending socket has RECV_OWN_MSGS enabled. Link: https://lore.kernel.org/r/20210420191212.42753-1-erik@flodin.me Signed-off-by: Erik Flodin Signed-off-by: Marc Kleine-Budde

ethtool: add missing EEPROM to list of messages

2021-04-19T23:29:43+00:00

ETHTOOL_MSG_MODULE_EEPROM_GET is missing from the list of messages. ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY is sadly a rather long name so we need to adjust column length. v2: use spaces (Andrew) Fixes: c781ff12a2f3 ("ethtool: Allow network drivers to dump arbitrary EEPROM data") Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-04-17T18:08:07+00:00

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c - keep the ZC code, drop the code related to reinit net/bridge/netfilter/ebtables.c - fix build after move to net_generic Signed-off-by: Jakub Kicinski

docs: ethtool: document standard statistics

2021-04-16T23:59:20+00:00

Add documentation for ETHTOOL_MSG_STATS_GET. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

docs: networking: extend the statistics documentation

2021-04-16T23:59:20+00:00

Make the lack of expectations for switching NICs explicit, describe the new stats. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller