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(). ... --- drivers/net/usb/gl620a.c | 229 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 229 insertions(+) create mode 100644 drivers/net/usb/gl620a.c (limited to 'drivers/net/usb/gl620a.c') diff --git a/drivers/net/usb/gl620a.c b/drivers/net/usb/gl620a.c new file mode 100644 index 000000000..46af78caf --- /dev/null +++ b/drivers/net/usb/gl620a.c @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * GeneSys GL620USB-A based links + * Copyright (C) 2001 by Jiun-Jie Huang + * Copyright (C) 2001 by Stanislav Brabec + */ + +// #define DEBUG // error path messages, extra info +// #define VERBOSE // more; success messages + +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +/* + * GeneSys GL620USB-A (www.genesyslogic.com.tw) + * + * ... should partially interop with the Win32 driver for this hardware. + * The GeneSys docs imply there's some NDIS issue motivating this framing. + * + * Some info from GeneSys: + * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk. + * (Some cables, like the BAFO-100c, use the half duplex version.) + * - For the full duplex model, the low bit of the version code says + * which side is which ("left/right"). + * - For the half duplex type, a control/interrupt handshake settles + * the transfer direction. (That's disabled here, partially coded.) + * A control URB would block until other side writes an interrupt. + * + * Original code from Jiun-Jie Huang + * and merged into "usbnet" by Stanislav Brabec . + */ + +// control msg write command +#define GENELINK_CONNECT_WRITE 0xF0 +// interrupt pipe index +#define GENELINK_INTERRUPT_PIPE 0x03 +// interrupt read buffer size +#define INTERRUPT_BUFSIZE 0x08 +// interrupt pipe interval value +#define GENELINK_INTERRUPT_INTERVAL 0x10 +// max transmit packet number per transmit +#define GL_MAX_TRANSMIT_PACKETS 32 +// max packet length +#define GL_MAX_PACKET_LEN 1514 +// max receive buffer size +#define GL_RCV_BUF_SIZE \ + (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4) + +struct gl_packet { + __le32 packet_length; + char packet_data[]; +}; + +struct gl_header { + __le32 packet_count; + struct gl_packet packets; +}; + +static int genelink_rx_fixup(struct usbnet *dev, struct sk_buff *skb) +{ + struct gl_header *header; + struct gl_packet *packet; + struct sk_buff *gl_skb; + u32 size; + u32 count; + + /* This check is no longer done by usbnet */ + if (skb->len < dev->net->hard_header_len) + return 0; + + header = (struct gl_header *) skb->data; + + // get the packet count of the received skb + count = le32_to_cpu(header->packet_count); + if (count > GL_MAX_TRANSMIT_PACKETS) { + netdev_dbg(dev->net, + "genelink: invalid received packet count %u\n", + count); + return 0; + } + + // set the current packet pointer to the first packet + packet = &header->packets; + + // decrement the length for the packet count size 4 bytes + skb_pull(skb, 4); + + while (count > 1) { + // get the packet length + size = le32_to_cpu(packet->packet_length); + + // this may be a broken packet + if (size > GL_MAX_PACKET_LEN) { + netdev_dbg(dev->net, "genelink: invalid rx length %d\n", + size); + return 0; + } + + // allocate the skb for the individual packet + gl_skb = alloc_skb(size, GFP_ATOMIC); + if (gl_skb) { + + // copy the packet data to the new skb + skb_put_data(gl_skb, packet->packet_data, size); + usbnet_skb_return(dev, gl_skb); + } + + // advance to the next packet + packet = (struct gl_packet *)&packet->packet_data[size]; + count--; + + // shift the data pointer to the next gl_packet + skb_pull(skb, size + 4); + } + + // skip the packet length field 4 bytes + skb_pull(skb, 4); + + if (skb->len > GL_MAX_PACKET_LEN) { + netdev_dbg(dev->net, "genelink: invalid rx length %d\n", + skb->len); + return 0; + } + return 1; +} + +static struct sk_buff * +genelink_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) +{ + int padlen; + int length = skb->len; + int headroom = skb_headroom(skb); + int tailroom = skb_tailroom(skb); + __le32 *packet_count; + __le32 *packet_len; + + // FIXME: magic numbers, bleech + padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1; + + if ((!skb_cloned(skb)) + && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) { + if ((headroom < (4 + 4*1)) || (tailroom < padlen)) { + skb->data = memmove(skb->head + (4 + 4*1), + skb->data, skb->len); + skb_set_tail_pointer(skb, skb->len); + } + } else { + struct sk_buff *skb2; + skb2 = skb_copy_expand(skb, (4 + 4*1) , padlen, flags); + dev_kfree_skb_any(skb); + skb = skb2; + if (!skb) + return NULL; + } + + // attach the packet count to the header + packet_count = skb_push(skb, (4 + 4 * 1)); + packet_len = packet_count + 1; + + *packet_count = cpu_to_le32(1); + *packet_len = cpu_to_le32(length); + + // add padding byte + if ((skb->len % dev->maxpacket) == 0) + skb_put(skb, 1); + + return skb; +} + +static int genelink_bind(struct usbnet *dev, struct usb_interface *intf) +{ + dev->hard_mtu = GL_RCV_BUF_SIZE; + dev->net->hard_header_len += 4; + dev->in = usb_rcvbulkpipe(dev->udev, dev->driver_info->in); + dev->out = usb_sndbulkpipe(dev->udev, dev->driver_info->out); + return 0; +} + +static const struct driver_info genelink_info = { + .description = "Genesys GeneLink", + .flags = FLAG_POINTTOPOINT | FLAG_FRAMING_GL | FLAG_NO_SETINT, + .bind = genelink_bind, + .rx_fixup = genelink_rx_fixup, + .tx_fixup = genelink_tx_fixup, + + .in = 1, .out = 2, + +#ifdef GENELINK_ACK + .check_connect =genelink_check_connect, +#endif +}; + +static const struct usb_device_id products [] = { + +{ + USB_DEVICE(0x05e3, 0x0502), // GL620USB-A + .driver_info = (unsigned long) &genelink_info, +}, + /* NOT: USB_DEVICE(0x05e3, 0x0501), // GL620USB + * that's half duplex, not currently supported + */ + { }, // END +}; +MODULE_DEVICE_TABLE(usb, products); + +static struct usb_driver gl620a_driver = { + .name = "gl620a", + .id_table = products, + .probe = usbnet_probe, + .disconnect = usbnet_disconnect, + .suspend = usbnet_suspend, + .resume = usbnet_resume, + .disable_hub_initiated_lpm = 1, +}; + +module_usb_driver(gl620a_driver); + +MODULE_AUTHOR("Jiun-Jie Huang"); +MODULE_DESCRIPTION("GL620-USB-A Host-to-Host Link cables"); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3