wireguard-linux/Documentation/networking, branch devel

Documentation/tcp_ao: Document the supported MAC algorithms and lengths

2026-05-02T17:18:09Z

Update the TCP-AO documentation to fix some incorrect terminology and claims regarding the MAC algorithms, and document which MAC algorithms and lengths the Linux implementation supports. Signed-off-by: Eric Biggers Link: https://patch.msgid.link/20260429210856.725667-1-ebiggers@kernel.org Signed-off-by: Jakub Kicinski

tcp: move tp->bytes_acked to tcp_sock_write_tx group

2026-05-02T00:22:45Z

tp->bytes_acked is touched in TX path only. Signed-off-by: Eric Dumazet Link: https://patch.msgid.link/20260430100021.211139-5-edumazet@google.com Signed-off-by: Jakub Kicinski

tcp: move tp->segs_in and tp->segs_out to tcp_sock_write_txrx group

2026-05-02T00:22:45Z

segs_in is changed for each incoming packet, including ACK packets. segs_out is changed for each outgoing packet, including ACK packets. They belong to tcp_sock_write_txrx group. Signed-off-by: Eric Dumazet Link: https://patch.msgid.link/20260430100021.211139-3-edumazet@google.com Signed-off-by: Jakub Kicinski

tcp: move tp->delivered and tp->delivered_ce to tcp_sock_write_tx group

2026-05-02T00:22:44Z

These counters are changed whenever sent data is acknowleged. They do not belong to tcp_sock_write_txrx group, because TCP receivers do not touch them. Signed-off-by: Eric Dumazet Link: https://patch.msgid.link/20260430100021.211139-2-edumazet@google.com Signed-off-by: Jakub Kicinski

net: cs89x0: remove ISA bus probing

2026-05-01T23:46:53Z

The cs89x0 driver is really two in one, and they are mutually exclusive: - the ISA driver was used on 486-era PCs. It likely has no remaining users, like the other ethernet drivers that got removed in linux-7.1. The DMA support in here is the last device driver use of the deprecated isa_bus_to_virt() interface, all other users are either x86 specific or or got converted to the normal dma-mapping interface. The driver was maintained by Andrew Morton at the time, based on the linux-2.2 vendor driver from Cirrus Logic. - the platform_driver instance was used on some embedded Arm boards around the same time, such as the EP7211 Development Kit. This is the same chip, but uses modern devicetree based probing and no DMA. This was added by Alexander Shiyan. Remove the ISA driver as a cleanup, including all of the outdated documentation referring to its configuration. Cc: Andrew Morton Signed-off-by: Arnd Bergmann Reviewed-by: Simon Horman Link: https://patch.msgid.link/20260429145624.2948432-1-arnd@kernel.org Signed-off-by: Jakub Kicinski

Documentation: net/smc: correct old value of smcr_max_recv_wr

2026-04-27T23:49:39Z

The smc-sysctl.rst documentation incorrectly stated that the previous hardcoded maximum number of WR buffers on the receive path (smcr_max_recv_wr) was 16. The correct historical value used before the introduction of the sysctl control was 48. Update the documentation to reflect the accurate historical value. Also fix a couple of minor typos. Reviewed-by: Halil Pasic Reviewed-by: Sidraya Jayagond Signed-off-by: Mahanta Jambigi Link: https://patch.msgid.link/20260424052336.3262350-1-mjambigi@linux.ibm.com Signed-off-by: Jakub Kicinski

Merge tag 'net-deletions' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2026-04-24T16:41:58Z

Pull networking deletions from Jakub Kicinski: "Delete some obsolete networking code Old code like amateur radio and NFC have long been a burden to core networking developers. syzbot loves to find bugs in BKL-era code, and noobs try to fix them. If we want to have a fighting chance of surviving the LLM-pocalypse this code needs to find a dedicated owner or get deleted. We've talked about these deletions multiple times in the past and every time someone wanted the code to stay. It is never very clear to me how many of those people actually use the code vs are just nostalgic to see it go. Amateur radio did have occasional users (or so I think) but most users switched to user space implementations since its all super slow stuff. Nobody stepped up to maintain the kernel code. We were lucky enough to find someone who wants to help with NFC so we're giving that a chance. Let's try to put the rest of this code behind us" * tag 'net-deletions' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: drivers: net: 8390: wd80x3: Remove this driver drivers: net: 8390: ultra: Remove this driver drivers: net: 8390: AX88190: Remove this driver drivers: net: fujitsu: fmvj18x: Remove this driver drivers: net: smsc: smc91c92: Remove this driver drivers: net: smsc: smc9194: Remove this driver drivers: net: amd: nmclan: Remove this driver drivers: net: amd: lance: Remove this driver drivers: net: 3com: 3c589: Remove this driver drivers: net: 3com: 3c574: Remove this driver drivers: net: 3com: 3c515: Remove this driver drivers: net: 3com: 3c509: Remove this driver net: packetengines: remove obsolete yellowfin driver and vendor dir net: packetengines: remove obsolete hamachi driver net: remove unused ATM protocols and legacy ATM device drivers net: remove ax25 and amateur radio (hamradio) subsystem net: remove ISDN subsystem and Bluetooth CMTP caif: remove CAIF NETWORK LAYER

drivers: net: smsc: smc91c92: Remove this driver

2026-04-23T22:57:06Z

The smc91c92 was written by David A Hinds in 1999. It is an PCMCIA device, so unlikely to be used with modern kernels. Remove the Documentation as well, since it refers to kernel versions 1.2.13 until 1.3.71 and FTP sites which no longer exist. Signed-off-by: Andrew Lunn Link: https://patch.msgid.link/20260422-v7-0-0-net-next-driver-removal-v1-v2-8-08a5b59784d5@lunn.ch Signed-off-by: Jakub Kicinski

drivers: net: 3com: 3c509: Remove this driver

2026-04-23T22:56:43Z

The 3c509 was written by Donald Becker between 1993-2000. It is an ISA device, so unlikely to be used with modern kernels. Signed-off-by: Andrew Lunn Link: https://patch.msgid.link/20260422-v7-0-0-net-next-driver-removal-v1-v2-1-08a5b59784d5@lunn.ch Signed-off-by: Jakub Kicinski

net: remove unused ATM protocols and legacy ATM device drivers

2026-04-23T19:21:14Z

Remove the ATM protocol modules and PCI/SBUS ATM device drivers that are no longer in active use. The ATM core protocol stack, PPPoATM, BR2684, and USB DSL modem drivers (drivers/usb/atm/) are retained in-tree to maintain PPP over ATM (PPPoA) and PPPoE-over-BR2684 support for DSL connections. The Solos ADSL2+ PCI driver is also retained. Removed ATM protocol modules: - net/atm/clip.c - Classical IP over ATM (RFC 2225) - net/atm/lec.c - LAN Emulation Client (LANE) - net/atm/mpc.c, mpoa_caches.c, mpoa_proc.c - Multi-Protocol Over ATM Removed PCI/SBUS ATM device drivers (drivers/atm/): - adummy, atmtcp - software/testing ATM devices - eni - Efficient Networks ENI155P (OC-3, ~1995) - fore200e - FORE Systems 200E PCI/SBUS (OC-3, ~1999) - he - ForeRunner HE (OC-3/OC-12, ~2000) - idt77105 - IDT 77105 25 Mbps ATM PHY - idt77252 - IDT 77252 NICStAR II (OC-3, ~2000) - iphase - Interphase ATM PCI (OC-3/DS3/E3) - lanai - Efficient Networks Speedstream 3010 - nicstar - IDT 77201 NICStAR (155/25 Mbps, ~1999) - suni - PMC S/UNI SONET PHY library Also clean up references in: - net/bridge/ - remove ATM LANE hook (br_fdb_test_addr_hook, br_fdb_test_addr) - net/core/dev.c - remove br_fdb_test_addr_hook export - defconfig files - remove ATM driver config options The removed code is moved to an out-of-tree module package (mod-orphan). Acked-by: Andy Shevchenko Reviewed-by: Simon Horman Reviewed-by: Nikolay Aleksandrov Link: https://patch.msgid.link/20260422041846.2035118-1-kuba@kernel.org Signed-off-by: Jakub Kicinski