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(). ... --- arch/sparc/boot/piggyback.c | 265 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 265 insertions(+) create mode 100644 arch/sparc/boot/piggyback.c (limited to 'arch/sparc/boot/piggyback.c') diff --git a/arch/sparc/boot/piggyback.c b/arch/sparc/boot/piggyback.c new file mode 100644 index 000000000..6d74064ad --- /dev/null +++ b/arch/sparc/boot/piggyback.c @@ -0,0 +1,265 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + Simple utility to make a single-image install kernel with initial ramdisk + for Sparc tftpbooting without need to set up nfs. + + Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + Pete Zaitcev endian fixes for cross-compiles, 2000. + Copyright (C) 2011 Sam Ravnborg + + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +/* + * Note: run this on an a.out kernel (use elftoaout for it), + * as PROM looks for a.out image only. + */ + +#define AOUT_TEXT_OFFSET 32 + +static int is64bit = 0; + +/* align to power-of-two size */ +static int align(int n) +{ + if (is64bit) + return (n + 0x1fff) & ~0x1fff; + else + return (n + 0xfff) & ~0xfff; +} + +/* read two bytes as big endian */ +static unsigned short ld2(char *p) +{ + return (p[0] << 8) | p[1]; +} + +/* save 4 bytes as big endian */ +static void st4(char *p, unsigned int x) +{ + p[0] = x >> 24; + p[1] = x >> 16; + p[2] = x >> 8; + p[3] = x; +} + +static void die(const char *str) +{ + perror(str); + exit(1); +} + +static void usage(void) +{ + /* fs_img.gz is an image of initial ramdisk. */ + fprintf(stderr, "Usage: piggyback bits vmlinux.aout System.map fs_img.gz\n"); + fprintf(stderr, "\tKernel image will be modified in place.\n"); + exit(1); +} + +static int start_line(const char *line) +{ + if (strcmp(line + 10, " _start\n") == 0) + return 1; + else if (strcmp(line + 18, " _start\n") == 0) + return 1; + return 0; +} + +static int end_line(const char *line) +{ + if (strcmp(line + 10, " _end\n") == 0) + return 1; + else if (strcmp (line + 18, " _end\n") == 0) + return 1; + return 0; +} + +/* + * Find address for start and end in System.map. + * The file looks like this: + * f0004000 ... _start + * f0379f79 ... _end + * 1234567890123456 + * ^coloumn 1 + * There is support for 64 bit addresses too. + * + * Return 0 if either start or end is not found + */ +static int get_start_end(const char *filename, unsigned int *start, + unsigned int *end) +{ + FILE *map; + char buffer[1024]; + + *start = 0; + *end = 0; + map = fopen(filename, "r"); + if (!map) + die(filename); + while (fgets(buffer, 1024, map)) { + if (start_line(buffer)) + *start = strtoul(buffer, NULL, 16); + else if (end_line(buffer)) + *end = strtoul(buffer, NULL, 16); + } + fclose (map); + + if (*start == 0 || *end == 0) + return 0; + + return 1; +} + +#define LOOKBACK (128 * 4) +#define BUFSIZE 1024 +/* + * Find the HdrS entry from head_32/head_64. + * We check if it is at the beginning of the file (sparc64 case) + * and if not we search for it. + * When we search do so in steps of 4 as HdrS is on a 4-byte aligned + * address (it is on same alignment as sparc instructions) + * Return the offset to the HdrS entry (as off_t) + */ +static off_t get_hdrs_offset(int kernelfd, const char *filename) +{ + char buffer[BUFSIZE]; + off_t offset; + int i; + + if (lseek(kernelfd, 0, SEEK_SET) < 0) + die("lseek"); + if (read(kernelfd, buffer, BUFSIZE) != BUFSIZE) + die(filename); + + if (buffer[40] == 'H' && buffer[41] == 'd' && + buffer[42] == 'r' && buffer[43] == 'S') { + return 40; + } else { + /* Find the gokernel label */ + /* Decode offset from branch instruction */ + offset = ld2(buffer + AOUT_TEXT_OFFSET + 2) << 2; + /* Go back 512 bytes so we do not miss HdrS */ + offset -= LOOKBACK; + /* skip a.out header */ + offset += AOUT_TEXT_OFFSET; + if (offset < 0) { + errno = -EINVAL; + die("Calculated a negative offset, probably elftoaout generated an invalid image. Did you use a recent elftoaout ?"); + } + if (lseek(kernelfd, offset, SEEK_SET) < 0) + die("lseek"); + if (read(kernelfd, buffer, BUFSIZE) != BUFSIZE) + die(filename); + + for (i = 0; i < LOOKBACK; i += 4) { + if (buffer[i + 0] == 'H' && buffer[i + 1] == 'd' && + buffer[i + 2] == 'r' && buffer[i + 3] == 'S') { + return offset + i; + } + } + } + fprintf (stderr, "Couldn't find headers signature in %s\n", filename); + exit(1); +} + +int main(int argc,char **argv) +{ + static char aout_magic[] = { 0x01, 0x03, 0x01, 0x07 }; + char buffer[1024]; + unsigned int i, start, end; + off_t offset; + struct stat s; + int image, tail; + + if (argc != 5) + usage(); + if (strcmp(argv[1], "64") == 0) + is64bit = 1; + if (stat (argv[4], &s) < 0) + die(argv[4]); + + if (!get_start_end(argv[3], &start, &end)) { + fprintf(stderr, "Could not determine start and end from %s\n", + argv[3]); + exit(1); + } + if ((image = open(argv[2], O_RDWR)) < 0) + die(argv[2]); + if (read(image, buffer, 512) != 512) + die(argv[2]); + if (memcmp(buffer, aout_magic, 4) != 0) { + fprintf (stderr, "Not a.out. Don't blame me.\n"); + exit(1); + } + /* + * We need to fill in values for + * sparc_ramdisk_image + sparc_ramdisk_size + * To locate these symbols search for the "HdrS" text which appear + * in the image a little before the gokernel symbol. + * See definition of these in init_32.S + */ + + offset = get_hdrs_offset(image, argv[2]); + /* skip HdrS + LINUX_VERSION_CODE + HdrS version */ + offset += 10; + + if (lseek(image, offset, 0) < 0) + die("lseek"); + + /* + * root_flags = 0 + * root_dev = 1 (RAMDISK_MAJOR) + * ram_flags = 0 + * sparc_ramdisk_image = "PAGE aligned address after _end") + * sparc_ramdisk_size = size of image + */ + st4(buffer, 0); + st4(buffer + 4, 0x01000000); + st4(buffer + 8, align(end + 32)); + st4(buffer + 12, s.st_size); + + if (write(image, buffer + 2, 14) != 14) + die(argv[2]); + + /* For sparc64 update a_text and clear a_data + a_bss */ + if (is64bit) + { + if (lseek(image, 4, 0) < 0) + die("lseek"); + /* a_text */ + st4(buffer, align(end + 32 + 8191) - (start & ~0x3fffffUL) + + s.st_size); + /* a_data */ + st4(buffer + 4, 0); + /* a_bss */ + st4(buffer + 8, 0); + if (write(image, buffer, 12) != 12) + die(argv[2]); + } + + /* seek page aligned boundary in the image file and add boot image */ + if (lseek(image, AOUT_TEXT_OFFSET - start + align(end + 32), 0) < 0) + die("lseek"); + if ((tail = open(argv[4], O_RDONLY)) < 0) + die(argv[4]); + while ((i = read(tail, buffer, 1024)) > 0) + if (write(image, buffer, i) != i) + die(argv[2]); + if (close(image) < 0) + die("close"); + if (close(tail) < 0) + die("close"); + return 0; +} -- cgit v1.2.3