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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /arch/alpha/kernel/module.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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().
...
Diffstat (limited to '')
-rw-r--r-- | arch/alpha/kernel/module.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c new file mode 100644 index 000000000..5b60c248d --- /dev/null +++ b/arch/alpha/kernel/module.c @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Kernel module help for Alpha. + Copyright (C) 2002 Richard Henderson. + +*/ +#include <linux/moduleloader.h> +#include <linux/elf.h> +#include <linux/vmalloc.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/slab.h> + +#if 0 +#define DEBUGP printk +#else +#define DEBUGP(fmt...) +#endif + +/* Allocate the GOT at the end of the core sections. */ + +struct got_entry { + struct got_entry *next; + Elf64_Sxword r_addend; + int got_offset; +}; + +static inline void +process_reloc_for_got(Elf64_Rela *rela, + struct got_entry *chains, Elf64_Xword *poffset) +{ + unsigned long r_sym = ELF64_R_SYM (rela->r_info); + unsigned long r_type = ELF64_R_TYPE (rela->r_info); + Elf64_Sxword r_addend = rela->r_addend; + struct got_entry *g; + + if (r_type != R_ALPHA_LITERAL) + return; + + for (g = chains + r_sym; g ; g = g->next) + if (g->r_addend == r_addend) { + if (g->got_offset == 0) { + g->got_offset = *poffset; + *poffset += 8; + } + goto found_entry; + } + + g = kmalloc (sizeof (*g), GFP_KERNEL); + g->next = chains[r_sym].next; + g->r_addend = r_addend; + g->got_offset = *poffset; + *poffset += 8; + chains[r_sym].next = g; + + found_entry: + /* Trick: most of the ELF64_R_TYPE field is unused. There are + 42 valid relocation types, and a 32-bit field. Co-opt the + bits above 256 to store the got offset for this reloc. */ + rela->r_info |= g->got_offset << 8; +} + +int +module_frob_arch_sections(Elf64_Ehdr *hdr, Elf64_Shdr *sechdrs, + char *secstrings, struct module *me) +{ + struct got_entry *chains; + Elf64_Rela *rela; + Elf64_Shdr *esechdrs, *symtab, *s, *got; + unsigned long nsyms, nrela, i; + + esechdrs = sechdrs + hdr->e_shnum; + symtab = got = NULL; + + /* Find out how large the symbol table is. Allocate one got_entry + head per symbol. Normally this will be enough, but not always. + We'll chain different offsets for the symbol down each head. */ + for (s = sechdrs; s < esechdrs; ++s) + if (s->sh_type == SHT_SYMTAB) + symtab = s; + else if (!strcmp(".got", secstrings + s->sh_name)) { + got = s; + me->arch.gotsecindex = s - sechdrs; + } + + if (!symtab) { + printk(KERN_ERR "module %s: no symbol table\n", me->name); + return -ENOEXEC; + } + if (!got) { + printk(KERN_ERR "module %s: no got section\n", me->name); + return -ENOEXEC; + } + + nsyms = symtab->sh_size / sizeof(Elf64_Sym); + chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL); + if (!chains) { + printk(KERN_ERR + "module %s: no memory for symbol chain buffer\n", + me->name); + return -ENOMEM; + } + + got->sh_size = 0; + got->sh_addralign = 8; + got->sh_type = SHT_NOBITS; + + /* Examine all LITERAL relocations to find out what GOT entries + are required. This sizes the GOT section as well. */ + for (s = sechdrs; s < esechdrs; ++s) + if (s->sh_type == SHT_RELA) { + nrela = s->sh_size / sizeof(Elf64_Rela); + rela = (void *)hdr + s->sh_offset; + for (i = 0; i < nrela; ++i) + process_reloc_for_got(rela+i, chains, + &got->sh_size); + } + + /* Free the memory we allocated. */ + for (i = 0; i < nsyms; ++i) { + struct got_entry *g, *n; + for (g = chains[i].next; g ; g = n) { + n = g->next; + kfree(g); + } + } + kfree(chains); + + return 0; +} + +int +apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relsec, + struct module *me) +{ + Elf64_Rela *rela = (void *)sechdrs[relsec].sh_addr; + unsigned long i, n = sechdrs[relsec].sh_size / sizeof(*rela); + Elf64_Sym *symtab, *sym; + void *base, *location; + unsigned long got, gp; + + DEBUGP("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + + base = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr; + symtab = (Elf64_Sym *)sechdrs[symindex].sh_addr; + + /* The small sections were sorted to the end of the segment. + The following should definitely cover them. */ + gp = (u64)me->core_layout.base + me->core_layout.size - 0x8000; + got = sechdrs[me->arch.gotsecindex].sh_addr; + + for (i = 0; i < n; i++) { + unsigned long r_sym = ELF64_R_SYM (rela[i].r_info); + unsigned long r_type = ELF64_R_TYPE (rela[i].r_info); + unsigned long r_got_offset = r_type >> 8; + unsigned long value, hi, lo; + r_type &= 0xff; + + /* This is where to make the change. */ + location = base + rela[i].r_offset; + + /* This is the symbol it is referring to. Note that all + unresolved symbols have been resolved. */ + sym = symtab + r_sym; + value = sym->st_value + rela[i].r_addend; + + switch (r_type) { + case R_ALPHA_NONE: + break; + case R_ALPHA_REFLONG: + *(u32 *)location = value; + break; + case R_ALPHA_REFQUAD: + /* BUG() can produce misaligned relocations. */ + ((u32 *)location)[0] = value; + ((u32 *)location)[1] = value >> 32; + break; + case R_ALPHA_GPREL32: + value -= gp; + if ((int)value != value) + goto reloc_overflow; + *(u32 *)location = value; + break; + case R_ALPHA_LITERAL: + hi = got + r_got_offset; + lo = hi - gp; + if ((short)lo != lo) + goto reloc_overflow; + *(u16 *)location = lo; + *(u64 *)hi = value; + break; + case R_ALPHA_LITUSE: + break; + case R_ALPHA_GPDISP: + value = gp - (u64)location; + lo = (short)value; + hi = (int)(value - lo); + if (hi + lo != value) + goto reloc_overflow; + *(u16 *)location = hi >> 16; + *(u16 *)(location + rela[i].r_addend) = lo; + break; + case R_ALPHA_BRSGP: + /* BRSGP is only allowed to bind to local symbols. + If the section is undef, this means that the + value was resolved from somewhere else. */ + if (sym->st_shndx == SHN_UNDEF) + goto reloc_overflow; + if ((sym->st_other & STO_ALPHA_STD_GPLOAD) == + STO_ALPHA_STD_GPLOAD) + /* Omit the prologue. */ + value += 8; + fallthrough; + case R_ALPHA_BRADDR: + value -= (u64)location + 4; + if (value & 3) + goto reloc_overflow; + value = (long)value >> 2; + if (value + (1<<21) >= 1<<22) + goto reloc_overflow; + value &= 0x1fffff; + value |= *(u32 *)location & ~0x1fffff; + *(u32 *)location = value; + break; + case R_ALPHA_HINT: + break; + case R_ALPHA_SREL32: + value -= (u64)location; + if ((int)value != value) + goto reloc_overflow; + *(u32 *)location = value; + break; + case R_ALPHA_SREL64: + value -= (u64)location; + *(u64 *)location = value; + break; + case R_ALPHA_GPRELHIGH: + value = (long)(value - gp + 0x8000) >> 16; + if ((short) value != value) + goto reloc_overflow; + *(u16 *)location = value; + break; + case R_ALPHA_GPRELLOW: + value -= gp; + *(u16 *)location = value; + break; + case R_ALPHA_GPREL16: + value -= gp; + if ((short) value != value) + goto reloc_overflow; + *(u16 *)location = value; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %lu\n", + me->name, r_type); + return -ENOEXEC; + reloc_overflow: + if (ELF64_ST_TYPE (sym->st_info) == STT_SECTION) + printk(KERN_ERR + "module %s: Relocation (type %lu) overflow vs section %d\n", + me->name, r_type, sym->st_shndx); + else + printk(KERN_ERR + "module %s: Relocation (type %lu) overflow vs %s\n", + me->name, r_type, strtab + sym->st_name); + return -ENOEXEC; + } + } + + return 0; +} |