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The zero-copy changes are relatively significant, but regression risk should be contained. The feature needs to be used to cause trouble. The new code did trigger a PowerPC64 bug with GCC 14: https://lore.kernel.org/netdev/20240913125302.0a06b4c7@canb.auug.org.au/ a fix for which Michael will bring via his tree: https://lore.kernel.org/all/87jzffq9ge.fsf@mail.lhotse/ Unideal, not sure if you'll be willing to pull without that fix but since we caught this recently I figured we'll defer to you during the MW instead of trying to fix it cross-tree. Also it feels like we got an order of magnitude more semi-automated "refactoring" chaff than usual, I wonder if it's just us. Core & protocols ---------------- - Support Device Memory TCP, ability to zero-copy receive TCP payloads to a DMABUF region of memory while packet headers land separately in normal kernel buffers, and TCP processes then as usual. - The ability to read the PTP PHC (Physical Hardware Clock) alongside MONOTONIC_RAW timestamps with PTP_SYS_OFFSET_EXTENDED. Previously only CLOCK_REALTIME was supported. - Allow matching on all bits of IP DSCP for routing decisions. Previously we only supported on matching TOS bits in IPv4 which is a narrower interpretation of the same header field. - Increase the range of weights used for multi-path routing from 8 bits to 16 bits. - Add support for IPv6 PIO p flag in the Prefix Information Option per draft-ietf-6man-pio-pflag. - IPv6 IOAM6 support for new tunsrc encap mode for better performance. - Detect destinations which blackhole MPTCP traffic and avoid initiating MPTCP connections to them for a certain period of time, 1h by default. - Improve IPsec control path performance by removing the inexact policies list. - AF_VSOCK: add support for SIOCOUTQ ioctl. - Add enum for reasons TCP reset was sent for easier tracing. - Add SMC ringbufs usage statistics. Drivers ------- - Handle netconsole setup failures more gracefully, don't fail loading, retain the specified target as disabled. - Extend bonding's IPsec offload pass thru capabilities (ESN, stats). Filtering --------- - Add TCP_BPF_SOCK_OPS_CB_FLAGS to bpf_*sockopt() to address the case when long-lived sockets miss a chance to set additional callbacks if a sockops program was not attached early in their lifetime. - Support using BPF skb helpers in tracepoints. - Conntrack Netlink: support CTA_FILTER for flush. - Improve SCTP support in nfnetlink_queue. - Improve performance of large nftables flush transactions. Things we sprinkled into general kernel code -------------------------------------------- - selftests: support setting an "interpreter" for script files; make it easy to run as separate cases tests where one "interpreter" is fed various test descriptions (in our case packet sequences). Driver API ---------- - Extend core and ethtool APIs to support many PHYs connected to a single interface (PHY topologies). - Extend cable diagnostics to specify whether Time Domain Reflectometry (TDR) or Active Link Cable Diagnostic (ALCD) was used. - Add library for implementing MAC-PHY Ethernet drivers for SPI devices compatible with Open Alliance 10BASE-T1x MAC-PHY Serial Interface (TC6) standard. - Add helpers to the PHY framework, for PHYs following the Open Alliance standards: - 1000BaseT1 link settings - cable test and diagnostics - Support listing / dumping all allocated RSS contexts. - Add configuration for frequency Embedded SYNC in DPLL, which magically embeds sync pulses into Ethernet signaling. Device drivers -------------- - Ethernet high-speed NICs: - Broadcom (bnxt): - use better FW APIs for queue reset - support QOS and TPID settings for the SR-IOV VLAN - support dynamic MSI-X allocation - Intel (100G, ice, idpf): - ice: support PCIe subfunctions - iavf: add support for TC U32 filters on VFs - ice: support Embedded SYNC in DPLL - nVidia/Mellanox (mlx5): - support HW managed steering tables - support PCIe PTM cross timestamping - AMD/Pensando: - ionic: use page_pool to increase Rx performance - Cisco (enic): - report per-queue statistics - Ethernet virtual: - Microsoft vNIC: - mana: support configuring ring length - netvsc: enable more channels on systems with many CPUs - IBM veth: - optimize polling to improve TCP_RR performance - optimize performance of Tx handling - VirtIO net: - synchronize the operstate with the admin state to allow a lower virtio-net to propagate the link status to an upper device like macvlan - Ethernet NICs consumer, and embedded: - Add driver for Realtek automotive PCIe devices (RTL9054, RTL9068, RTL9072, RTL9075, RTL9068, RTL9071) - Add driver for Microchip LAN8650/1 10BASE-T1S MAC-PHY. - Microchip: - lan743x: use phylink - support WOL, EEE, pause, link settings - add Wake-on-LAN support for KSZ87xx family - add KSZ8895/KSZ8864 switch support - factor out FDMA code and use it in sparx5 and lan966x (including DCB support in both) - Synopsys (stmmac): - support frame preemption (configured using TC and ethtool) - support Loongson DWMAC (GMAC v3.73) - support RockChips RK3576 DWMAC - TI: - am65-cpsw: add multi queue RX support - icssg-prueth: HSR offload support - Cadence (macb): - enable software (hrtimer based) IRQ coalescing by default - Xilinx (axinet): - expose HW statistics - improve multicast filtering - relax Rx checksum offload constraints - MediaTek: - mt7530: add EN7581 support - Aspeed (ftgmac100): - report link speed and duplex - Intel: - igc: add mqprio offload - igc: report EEE configuration - RealTek (r8169): - add support for RTL8126A rev.b - Vitesse (vsc73xx): - implement FDB add/del/dump operations - Freescale (fs_enet): - use phylink - Ethernet PHYs: - vitesse: implement downshift and MDI-X in vsc73xx PHYs - microchip: support LAN887x, supporting IEEE 802.3bw (100BASE-T1) and IEEE 802.3bp (1000BASE-T1) specifications - add Applied Micro QT2025 PHY driver (in Rust) - add Motorcomm yt8821 2.5G Ethernet PHY driver - CAN: - add driver for Rockchip RK3568 CAN-FD controller - flexcan: add wakeup support for imx95 - kvaser_usb: set hardware timestamp on transmitted packets - WiFi: - mac80211/cfg80211: - EHT rate support in AQL airtime fairness - handle DFS (radar detection) per link in Multi-Link Operation - RealTek (rtw89): - support RTL8852BT and 8852BE-VT (WiFi 6) - support hardware rfkill - support HW encryption in unicast management frames - support Wake-on-WLAN with supported network detection - RealTek (rtw89): - improve Rx performance by using USB frame aggregation - support USB 3 with RTL8822CU/RTL8822BU - Intel (iwlwifi/mvm): - offload RLC/SMPS functionality to firmware - Marvell (mwifiex): - add host based MLME to enable WPA3 - Bluetooth: - add support for Amlogic HCI UART protocol - add support for ISO data/packets to Intel and NXP drivers Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIyBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmbnFW0ACgkQMUZtbf5S IrvA8A/4yxw9SFLFZVFn2c1kRssssSUENAljnP29MaINjr74BT2B324e5V5xiCK/ yT+hr9M+mlFDZVlZYAxo7Z64X6EwmjXewaH+2/tIsZf9LFySnkNq3sCxCuZWQNtE WjVdT/t+7rS8sGQefSggchXrSqZg1Rw/oCI3cKjQl8jB/CvDs7n1ivjtNz409jHy MKvcvf4cfG/olN0SnXh8kHHmz4d1rnPOi2OmC/dNAU8ErcDgC1t7PmMAzTfJWzND Akyxe4BvMkoKjL+kzIdpaf6EoLjUENPqu9/KKseP37HtYZmE4M0ENJOJnr7FVWwP GHymKwyp+VyI3RLNPIWrMJyCOwyUg4n4N44tGDn5bC3fYi1qK7U14pTP1vSZfXsK K8D6kpkVNllTLvf2z+FbweHu6CSh87vgdt1p7aNKpkEO0jISJBDFxLAen1buayKt 9VYXclcM7ZdjDd6w/53woieYizNeV10L5917htJCh/BbQ+XM0IjDR9wiJuj3aZ1s BrmsTK/7VuKxJ4LQKFkWnqnB02/GUHDbGVQoQCUBF7uaSPcPv4FWW6ibqIUz8zq5 HyGFOIL1Lc/J4s7D3mvAEhs6AKcVd9eU29TIcgLAUFyAYvSq7Y50ZeFtZrCysv2y Uy43qagPl4jKcFlHCriD2b/vFHttppL1ijLs2bvydMQkhY9eoQ== =ZEaS -----END PGP SIGNATURE----- Merge tag 'net-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "The zero-copy changes are relatively significant, but regression risk should be contained. The feature needs to be used to cause trouble. Also it feels like we got an order of magnitude more semi-automated "refactoring" chaff than usual, I wonder if it's just us. Core & protocols: - Support Device Memory TCP, ability to zero-copy receive TCP payloads to a DMABUF region of memory while packet headers land separately in normal kernel buffers, and TCP processes then as usual. - The ability to read the PTP PHC (Physical Hardware Clock) alongside MONOTONIC_RAW timestamps with PTP_SYS_OFFSET_EXTENDED. Previously only CLOCK_REALTIME was supported. - Allow matching on all bits of IP DSCP for routing decisions. Previously we only supported on matching TOS bits in IPv4 which is a narrower interpretation of the same header field. - Increase the range of weights used for multi-path routing from 8 bits to 16 bits. - Add support for IPv6 PIO p flag in the Prefix Information Option per draft-ietf-6man-pio-pflag. - IPv6 IOAM6 support for new tunsrc encap mode for better performance. - Detect destinations which blackhole MPTCP traffic and avoid initiating MPTCP connections to them for a certain period of time, 1h by default. - Improve IPsec control path performance by removing the inexact policies list. - AF_VSOCK: add support for SIOCOUTQ ioctl. - Add enum for reasons TCP reset was sent for easier tracing. - Add SMC ringbufs usage statistics. Drivers: - Handle netconsole setup failures more gracefully, don't fail loading, retain the specified target as disabled. - Extend bonding's IPsec offload pass thru capabilities (ESN, stats). Filtering: - Add TCP_BPF_SOCK_OPS_CB_FLAGS to bpf_*sockopt() to address the case when long-lived sockets miss a chance to set additional callbacks if a sockops program was not attached early in their lifetime. - Support using BPF skb helpers in tracepoints. - Conntrack Netlink: support CTA_FILTER for flush. - Improve SCTP support in nfnetlink_queue. - Improve performance of large nftables flush transactions. Things we sprinkled into general kernel code: - selftests: support setting an "interpreter" for script files; make it easy to run as separate cases tests where one "interpreter" is fed various test descriptions (in our case packet sequences). Driver API: - Extend core and ethtool APIs to support many PHYs connected to a single interface (PHY topologies). - Extend cable diagnostics to specify whether Time Domain Reflectometry (TDR) or Active Link Cable Diagnostic (ALCD) was used. - Add library for implementing MAC-PHY Ethernet drivers for SPI devices compatible with Open Alliance 10BASE-T1x MAC-PHY Serial Interface (TC6) standard. - Add helpers to the PHY framework, for PHYs following the Open Alliance standards: - 1000BaseT1 link settings - cable test and diagnostics - Support listing / dumping all allocated RSS contexts. - Add configuration for frequency Embedded SYNC in DPLL, which magically embeds sync pulses into Ethernet signaling. Device drivers: - Ethernet high-speed NICs: - Broadcom (bnxt): - use better FW APIs for queue reset - support QOS and TPID settings for the SR-IOV VLAN - support dynamic MSI-X allocation - Intel (100G, ice, idpf): - ice: support PCIe subfunctions - iavf: add support for TC U32 filters on VFs - ice: support Embedded SYNC in DPLL - nVidia/Mellanox (mlx5): - support HW managed steering tables - support PCIe PTM cross timestamping - AMD/Pensando: - ionic: use page_pool to increase Rx performance - Cisco (enic): - report per-queue statistics - Ethernet virtual: - Microsoft vNIC: - mana: support configuring ring length - netvsc: enable more channels on systems with many CPUs - IBM veth: - optimize polling to improve TCP_RR performance - optimize performance of Tx handling - VirtIO net: - synchronize the operstate with the admin state to allow a lower virtio-net to propagate the link status to an upper device like macvlan - Ethernet NICs consumer, and embedded: - Add driver for Realtek automotive PCIe devices (RTL9054, RTL9068, RTL9072, RTL9075, RTL9068, RTL9071) - Add driver for Microchip LAN8650/1 10BASE-T1S MAC-PHY. - Microchip: - lan743x: use phylink - support WOL, EEE, pause, link settings - add Wake-on-LAN support for KSZ87xx family - add KSZ8895/KSZ8864 switch support - factor out FDMA code and use it in sparx5 and lan966x (including DCB support in both) - Synopsys (stmmac): - support frame preemption (configured using TC and ethtool) - support Loongson DWMAC (GMAC v3.73) - support RockChips RK3576 DWMAC - TI: - am65-cpsw: add multi queue RX support - icssg-prueth: HSR offload support - Cadence (macb): - enable software (hrtimer based) IRQ coalescing by default - Xilinx (axinet): - expose HW statistics - improve multicast filtering - relax Rx checksum offload constraints - MediaTek: - mt7530: add EN7581 support - Aspeed (ftgmac100): - report link speed and duplex - Intel: - igc: add mqprio offload - igc: report EEE configuration - RealTek (r8169): - add support for RTL8126A rev.b - Vitesse (vsc73xx): - implement FDB add/del/dump operations - Freescale (fs_enet): - use phylink - Ethernet PHYs: - vitesse: implement downshift and MDI-X in vsc73xx PHYs - microchip: support LAN887x, supporting IEEE 802.3bw (100BASE-T1) and IEEE 802.3bp (1000BASE-T1) specifications - add Applied Micro QT2025 PHY driver (in Rust) - add Motorcomm yt8821 2.5G Ethernet PHY driver - CAN: - add driver for Rockchip RK3568 CAN-FD controller - flexcan: add wakeup support for imx95 - kvaser_usb: set hardware timestamp on transmitted packets - WiFi: - mac80211/cfg80211: - EHT rate support in AQL airtime fairness - handle DFS (radar detection) per link in Multi-Link Operation - RealTek (rtw89): - support RTL8852BT and 8852BE-VT (WiFi 6) - support hardware rfkill - support HW encryption in unicast management frames - support Wake-on-WLAN with supported network detection - RealTek (rtw89): - improve Rx performance by using USB frame aggregation - support USB 3 with RTL8822CU/RTL8822BU - Intel (iwlwifi/mvm): - offload RLC/SMPS functionality to firmware - Marvell (mwifiex): - add host based MLME to enable WPA3 - Bluetooth: - add support for Amlogic HCI UART protocol - add support for ISO data/packets to Intel and NXP drivers" * tag 'net-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1303 commits) net/mlx5: HWS, check the correct variable in hws_send_ring_alloc_sq() netfilter: nft_socket: Fix a NULL vs IS_ERR() bug in nft_socket_cgroup_subtree_level() ice: Fix a NULL vs IS_ERR() check in probe() ice: Fix a couple NULL vs IS_ERR() bugs net: ethernet: fs_enet: Make the per clock optional net: ti: icssg-prueth: Add multicast filtering support in HSR mode net: ti: icssg-prueth: Enable HSR Tx duplication, Tx Tag and Rx Tag offload net: ti: icssg-prueth: Add support for HSR frame forward offload net: ti: icssg-prueth: Stop hardcoding def_inc net: ti: icss-iep: Move icss_iep structure net: ibm: emac: get rid of wol_irq net: ibm: emac: remove all waiting code net: ibm: emac: replace of_get_property net: ibm: emac: use netdev's phydev directly net: ibm: emac: use devm for register_netdev net: ibm: emac: remove mii_bus with devm net: ibm: emac: use devm for of_iomap net: ibm: emac: manage emac_irq with devm net: ibm: emac: use devm for alloc_etherdev octeontx2-af: debugfs: Add Channel info to RPM map ... |
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