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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/acpi/acpica/utstrsuppt.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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--drivers/acpi/acpica/utstrsuppt.c443
1 files changed, 443 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/utstrsuppt.c b/drivers/acpi/acpica/utstrsuppt.c
new file mode 100644
index 000000000..199982a6f
--- /dev/null
+++ b/drivers/acpi/acpica/utstrsuppt.c
@@ -0,0 +1,443 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/*******************************************************************************
+ *
+ * Module Name: utstrsuppt - Support functions for string-to-integer conversion
+ *
+ ******************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utstrsuppt")
+
+/* Local prototypes */
+static acpi_status
+acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit);
+
+static acpi_status
+acpi_ut_strtoul_multiply64(u64 multiplicand, u32 base, u64 *out_product);
+
+static acpi_status acpi_ut_strtoul_add64(u64 addend1, u32 digit, u64 *out_sum);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_octal_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 8 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned octal value is 01777777777777777777777
+ * Maximum 32-bit unsigned octal value is 037777777777
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+ /*
+ * Character must be ASCII 0-7, otherwise:
+ * 1) Runtime: terminate with no error, per the ACPI spec
+ * 2) Compiler: return an error
+ */
+ if (!(ACPI_IS_OCTAL_DIGIT(*string))) {
+#ifdef ACPI_ASL_COMPILER
+ status = AE_BAD_OCTAL_CONSTANT;
+#endif
+ break;
+ }
+
+ /* Convert and insert this octal digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 8, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_OCTAL_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_decimal_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 10 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned decimal value is 18446744073709551615
+ * Maximum 32-bit unsigned decimal value is 4294967295
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+ /*
+ * Character must be ASCII 0-9, otherwise:
+ * 1) Runtime: terminate with no error, per the ACPI spec
+ * 2) Compiler: return an error
+ */
+ if (!isdigit((int)*string)) {
+#ifdef ACPI_ASL_COMPILER
+ status = AE_BAD_DECIMAL_CONSTANT;
+#endif
+ break;
+ }
+
+ /* Convert and insert this decimal digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 10, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_DECIMAL_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_hex_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 16 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned hex value is 0xFFFFFFFFFFFFFFFF
+ * Maximum 32-bit unsigned hex value is 0xFFFFFFFF
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+ /*
+ * Character must be ASCII A-F, a-f, or 0-9, otherwise:
+ * 1) Runtime: terminate with no error, per the ACPI spec
+ * 2) Compiler: return an error
+ */
+ if (!isxdigit((int)*string)) {
+#ifdef ACPI_ASL_COMPILER
+ status = AE_BAD_HEX_CONSTANT;
+#endif
+ break;
+ }
+
+ /* Convert and insert this hex digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 16, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_HEX_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_remove_leading_zeros
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: Next character after any leading zeros. This character may be
+ * used by the caller to detect end-of-string.
+ *
+ * DESCRIPTION: Remove any leading zeros in the input string. Return the
+ * next character after the final ASCII zero to enable the caller
+ * to check for the end of the string (NULL terminator).
+ *
+ ******************************************************************************/
+
+char acpi_ut_remove_leading_zeros(char **string)
+{
+
+ while (**string == ACPI_ASCII_ZERO) {
+ *string += 1;
+ }
+
+ return (**string);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_remove_whitespace
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: Next character after any whitespace. This character may be
+ * used by the caller to detect end-of-string.
+ *
+ * DESCRIPTION: Remove any leading whitespace in the input string. Return the
+ * next character after the final ASCII zero to enable the caller
+ * to check for the end of the string (NULL terminator).
+ *
+ ******************************************************************************/
+
+char acpi_ut_remove_whitespace(char **string)
+{
+
+ while (isspace((u8)**string)) {
+ *string += 1;
+ }
+
+ return (**string);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_detect_hex_prefix
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: TRUE if a "0x" prefix was found at the start of the string
+ *
+ * DESCRIPTION: Detect and remove a hex "0x" prefix
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_detect_hex_prefix(char **string)
+{
+ char *initial_position = *string;
+
+ acpi_ut_remove_hex_prefix(string);
+ if (*string != initial_position) {
+ return (TRUE); /* String is past leading 0x */
+ }
+
+ return (FALSE); /* Not a hex string */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_remove_hex_prefix
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: none
+ *
+ * DESCRIPTION: Remove a hex "0x" prefix
+ *
+ ******************************************************************************/
+
+void acpi_ut_remove_hex_prefix(char **string)
+{
+ if ((**string == ACPI_ASCII_ZERO) &&
+ (tolower((int)*(*string + 1)) == 'x')) {
+ *string += 2; /* Go past the leading 0x */
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_detect_octal_prefix
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: True if an octal "0" prefix was found at the start of the
+ * string
+ *
+ * DESCRIPTION: Detect and remove an octal prefix (zero)
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_detect_octal_prefix(char **string)
+{
+
+ if (**string == ACPI_ASCII_ZERO) {
+ *string += 1; /* Go past the leading 0 */
+ return (TRUE);
+ }
+
+ return (FALSE); /* Not an octal string */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_insert_digit
+ *
+ * PARAMETERS: accumulated_value - Current value of the integer value
+ * accumulator. The new value is
+ * returned here.
+ * base - Radix, either 8/10/16
+ * ascii_digit - ASCII single digit to be inserted
+ *
+ * RETURN: Status and result of the convert/insert operation. The only
+ * possible returned exception code is numeric overflow of
+ * either the multiply or add conversion operations.
+ *
+ * DESCRIPTION: Generic conversion and insertion function for all bases:
+ *
+ * 1) Multiply the current accumulated/converted value by the
+ * base in order to make room for the new character.
+ *
+ * 2) Convert the new character to binary and add it to the
+ * current accumulated value.
+ *
+ * Note: The only possible exception indicates an integer
+ * overflow (AE_NUMERIC_OVERFLOW)
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit)
+{
+ acpi_status status;
+ u64 product;
+
+ /* Make room in the accumulated value for the incoming digit */
+
+ status = acpi_ut_strtoul_multiply64(*accumulated_value, base, &product);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Add in the new digit, and store the sum to the accumulated value */
+
+ status =
+ acpi_ut_strtoul_add64(product,
+ acpi_ut_ascii_char_to_hex(ascii_digit),
+ accumulated_value);
+
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strtoul_multiply64
+ *
+ * PARAMETERS: multiplicand - Current accumulated converted integer
+ * base - Base/Radix
+ * out_product - Where the product is returned
+ *
+ * RETURN: Status and 64-bit product
+ *
+ * DESCRIPTION: Multiply two 64-bit values, with checking for 64-bit overflow as
+ * well as 32-bit overflow if necessary (if the current global
+ * integer width is 32).
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_strtoul_multiply64(u64 multiplicand, u32 base, u64 *out_product)
+{
+ u64 product;
+ u64 quotient;
+
+ /* Exit if either operand is zero */
+
+ *out_product = 0;
+ if (!multiplicand || !base) {
+ return (AE_OK);
+ }
+
+ /*
+ * Check for 64-bit overflow before the actual multiplication.
+ *
+ * Notes: 64-bit division is often not supported on 32-bit platforms
+ * (it requires a library function), Therefore ACPICA has a local
+ * 64-bit divide function. Also, Multiplier is currently only used
+ * as the radix (8/10/16), to the 64/32 divide will always work.
+ */
+ acpi_ut_short_divide(ACPI_UINT64_MAX, base, &quotient, NULL);
+ if (multiplicand > quotient) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ product = multiplicand * base;
+
+ /* Check for 32-bit overflow if necessary */
+
+ if ((acpi_gbl_integer_bit_width == 32) && (product > ACPI_UINT32_MAX)) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ *out_product = product;
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strtoul_add64
+ *
+ * PARAMETERS: addend1 - Current accumulated converted integer
+ * digit - New hex value/char
+ * out_sum - Where sum is returned (Accumulator)
+ *
+ * RETURN: Status and 64-bit sum
+ *
+ * DESCRIPTION: Add two 64-bit values, with checking for 64-bit overflow as
+ * well as 32-bit overflow if necessary (if the current global
+ * integer width is 32).
+ *
+ ******************************************************************************/
+
+static acpi_status acpi_ut_strtoul_add64(u64 addend1, u32 digit, u64 *out_sum)
+{
+ u64 sum;
+
+ /* Check for 64-bit overflow before the actual addition */
+
+ if ((addend1 > 0) && (digit > (ACPI_UINT64_MAX - addend1))) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ sum = addend1 + digit;
+
+ /* Check for 32-bit overflow if necessary */
+
+ if ((acpi_gbl_integer_bit_width == 32) && (sum > ACPI_UINT32_MAX)) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ *out_sum = sum;
+ return (AE_OK);
+}