From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- net/openvswitch/vport-internal_dev.c | 255 +++++++++++++++++++++++++++++++++++ 1 file changed, 255 insertions(+) create mode 100644 net/openvswitch/vport-internal_dev.c (limited to 'net/openvswitch/vport-internal_dev.c') diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c new file mode 100644 index 000000000..74c88a6ba --- /dev/null +++ b/net/openvswitch/vport-internal_dev.c @@ -0,0 +1,255 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2007-2012 Nicira, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "datapath.h" +#include "vport-internal_dev.h" +#include "vport-netdev.h" + +struct internal_dev { + struct vport *vport; +}; + +static struct vport_ops ovs_internal_vport_ops; + +static struct internal_dev *internal_dev_priv(struct net_device *netdev) +{ + return netdev_priv(netdev); +} + +/* Called with rcu_read_lock_bh. */ +static netdev_tx_t +internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev) +{ + int len, err; + + /* store len value because skb can be freed inside ovs_vport_receive() */ + len = skb->len; + + rcu_read_lock(); + err = ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL); + rcu_read_unlock(); + + if (likely(!err)) + dev_sw_netstats_tx_add(netdev, 1, len); + else + netdev->stats.tx_errors++; + + return NETDEV_TX_OK; +} + +static int internal_dev_open(struct net_device *netdev) +{ + netif_start_queue(netdev); + return 0; +} + +static int internal_dev_stop(struct net_device *netdev) +{ + netif_stop_queue(netdev); + return 0; +} + +static void internal_dev_getinfo(struct net_device *netdev, + struct ethtool_drvinfo *info) +{ + strscpy(info->driver, "openvswitch", sizeof(info->driver)); +} + +static const struct ethtool_ops internal_dev_ethtool_ops = { + .get_drvinfo = internal_dev_getinfo, + .get_link = ethtool_op_get_link, +}; + +static void internal_dev_destructor(struct net_device *dev) +{ + struct vport *vport = ovs_internal_dev_get_vport(dev); + + ovs_vport_free(vport); +} + +static const struct net_device_ops internal_dev_netdev_ops = { + .ndo_open = internal_dev_open, + .ndo_stop = internal_dev_stop, + .ndo_start_xmit = internal_dev_xmit, + .ndo_set_mac_address = eth_mac_addr, + .ndo_get_stats64 = dev_get_tstats64, +}; + +static struct rtnl_link_ops internal_dev_link_ops __read_mostly = { + .kind = "openvswitch", +}; + +static void do_setup(struct net_device *netdev) +{ + ether_setup(netdev); + + netdev->max_mtu = ETH_MAX_MTU; + + netdev->netdev_ops = &internal_dev_netdev_ops; + + netdev->priv_flags &= ~IFF_TX_SKB_SHARING; + netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE | IFF_OPENVSWITCH | + IFF_NO_QUEUE; + netdev->needs_free_netdev = true; + netdev->priv_destructor = NULL; + netdev->ethtool_ops = &internal_dev_ethtool_ops; + netdev->rtnl_link_ops = &internal_dev_link_ops; + + netdev->features = NETIF_F_LLTX | NETIF_F_SG | NETIF_F_FRAGLIST | + NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | + NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ENCAP_ALL; + + netdev->vlan_features = netdev->features; + netdev->hw_enc_features = netdev->features; + netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; + netdev->hw_features = netdev->features & ~NETIF_F_LLTX; + + eth_hw_addr_random(netdev); +} + +static struct vport *internal_dev_create(const struct vport_parms *parms) +{ + struct vport *vport; + struct internal_dev *internal_dev; + struct net_device *dev; + int err; + + vport = ovs_vport_alloc(0, &ovs_internal_vport_ops, parms); + if (IS_ERR(vport)) { + err = PTR_ERR(vport); + goto error; + } + + dev = alloc_netdev(sizeof(struct internal_dev), + parms->name, NET_NAME_USER, do_setup); + vport->dev = dev; + if (!vport->dev) { + err = -ENOMEM; + goto error_free_vport; + } + vport->dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); + if (!vport->dev->tstats) { + err = -ENOMEM; + goto error_free_netdev; + } + + dev_net_set(vport->dev, ovs_dp_get_net(vport->dp)); + dev->ifindex = parms->desired_ifindex; + internal_dev = internal_dev_priv(vport->dev); + internal_dev->vport = vport; + + /* Restrict bridge port to current netns. */ + if (vport->port_no == OVSP_LOCAL) + vport->dev->features |= NETIF_F_NETNS_LOCAL; + + rtnl_lock(); + err = register_netdevice(vport->dev); + if (err) + goto error_unlock; + vport->dev->priv_destructor = internal_dev_destructor; + + dev_set_promiscuity(vport->dev, 1); + rtnl_unlock(); + netif_start_queue(vport->dev); + + return vport; + +error_unlock: + rtnl_unlock(); + free_percpu(dev->tstats); +error_free_netdev: + free_netdev(dev); +error_free_vport: + ovs_vport_free(vport); +error: + return ERR_PTR(err); +} + +static void internal_dev_destroy(struct vport *vport) +{ + netif_stop_queue(vport->dev); + rtnl_lock(); + dev_set_promiscuity(vport->dev, -1); + + /* unregister_netdevice() waits for an RCU grace period. */ + unregister_netdevice(vport->dev); + free_percpu(vport->dev->tstats); + rtnl_unlock(); +} + +static int internal_dev_recv(struct sk_buff *skb) +{ + struct net_device *netdev = skb->dev; + + if (unlikely(!(netdev->flags & IFF_UP))) { + kfree_skb(skb); + netdev->stats.rx_dropped++; + return NETDEV_TX_OK; + } + + skb_dst_drop(skb); + nf_reset_ct(skb); + secpath_reset(skb); + + skb->pkt_type = PACKET_HOST; + skb->protocol = eth_type_trans(skb, netdev); + skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN); + dev_sw_netstats_rx_add(netdev, skb->len); + + netif_rx(skb); + return NETDEV_TX_OK; +} + +static struct vport_ops ovs_internal_vport_ops = { + .type = OVS_VPORT_TYPE_INTERNAL, + .create = internal_dev_create, + .destroy = internal_dev_destroy, + .send = internal_dev_recv, +}; + +int ovs_is_internal_dev(const struct net_device *netdev) +{ + return netdev->netdev_ops == &internal_dev_netdev_ops; +} + +struct vport *ovs_internal_dev_get_vport(struct net_device *netdev) +{ + if (!ovs_is_internal_dev(netdev)) + return NULL; + + return internal_dev_priv(netdev)->vport; +} + +int ovs_internal_dev_rtnl_link_register(void) +{ + int err; + + err = rtnl_link_register(&internal_dev_link_ops); + if (err < 0) + return err; + + err = ovs_vport_ops_register(&ovs_internal_vport_ops); + if (err < 0) + rtnl_link_unregister(&internal_dev_link_ops); + + return err; +} + +void ovs_internal_dev_rtnl_link_unregister(void) +{ + ovs_vport_ops_unregister(&ovs_internal_vport_ops); + rtnl_link_unregister(&internal_dev_link_ops); +} -- cgit v1.2.3