diff options
author | 2023-02-21 18:24:12 -0800 | |
---|---|---|
committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /lib/test_parman.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-- | lib/test_parman.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/lib/test_parman.c b/lib/test_parman.c new file mode 100644 index 000000000..35e322436 --- /dev/null +++ b/lib/test_parman.c @@ -0,0 +1,395 @@ +/* + * lib/test_parman.c - Test module for parman + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/bitops.h> +#include <linux/err.h> +#include <linux/random.h> +#include <linux/parman.h> + +#define TEST_PARMAN_PRIO_SHIFT 7 /* defines number of prios for testing */ +#define TEST_PARMAN_PRIO_COUNT BIT(TEST_PARMAN_PRIO_SHIFT) +#define TEST_PARMAN_PRIO_MASK (TEST_PARMAN_PRIO_COUNT - 1) + +#define TEST_PARMAN_ITEM_SHIFT 13 /* defines a total number + * of items for testing + */ +#define TEST_PARMAN_ITEM_COUNT BIT(TEST_PARMAN_ITEM_SHIFT) +#define TEST_PARMAN_ITEM_MASK (TEST_PARMAN_ITEM_COUNT - 1) + +#define TEST_PARMAN_BASE_SHIFT 8 +#define TEST_PARMAN_BASE_COUNT BIT(TEST_PARMAN_BASE_SHIFT) +#define TEST_PARMAN_RESIZE_STEP_SHIFT 7 +#define TEST_PARMAN_RESIZE_STEP_COUNT BIT(TEST_PARMAN_RESIZE_STEP_SHIFT) + +#define TEST_PARMAN_BULK_MAX_SHIFT (2 + TEST_PARMAN_RESIZE_STEP_SHIFT) +#define TEST_PARMAN_BULK_MAX_COUNT BIT(TEST_PARMAN_BULK_MAX_SHIFT) +#define TEST_PARMAN_BULK_MAX_MASK (TEST_PARMAN_BULK_MAX_COUNT - 1) + +#define TEST_PARMAN_RUN_BUDGET (TEST_PARMAN_ITEM_COUNT * 256) + +struct test_parman_prio { + struct parman_prio parman_prio; + unsigned long priority; +}; + +struct test_parman_item { + struct parman_item parman_item; + struct test_parman_prio *prio; + bool used; +}; + +struct test_parman { + struct parman *parman; + struct test_parman_item **prio_array; + unsigned long prio_array_limit; + struct test_parman_prio prios[TEST_PARMAN_PRIO_COUNT]; + struct test_parman_item items[TEST_PARMAN_ITEM_COUNT]; + struct rnd_state rnd; + unsigned long run_budget; + unsigned long bulk_budget; + bool bulk_noop; + unsigned int used_items; +}; + +#define ITEM_PTRS_SIZE(count) (sizeof(struct test_parman_item *) * (count)) + +static int test_parman_resize(void *priv, unsigned long new_count) +{ + struct test_parman *test_parman = priv; + struct test_parman_item **prio_array; + unsigned long old_count; + + prio_array = krealloc(test_parman->prio_array, + ITEM_PTRS_SIZE(new_count), GFP_KERNEL); + if (new_count == 0) + return 0; + if (!prio_array) + return -ENOMEM; + old_count = test_parman->prio_array_limit; + if (new_count > old_count) + memset(&prio_array[old_count], 0, + ITEM_PTRS_SIZE(new_count - old_count)); + test_parman->prio_array = prio_array; + test_parman->prio_array_limit = new_count; + return 0; +} + +static void test_parman_move(void *priv, unsigned long from_index, + unsigned long to_index, unsigned long count) +{ + struct test_parman *test_parman = priv; + struct test_parman_item **prio_array = test_parman->prio_array; + + memmove(&prio_array[to_index], &prio_array[from_index], + ITEM_PTRS_SIZE(count)); + memset(&prio_array[from_index], 0, ITEM_PTRS_SIZE(count)); +} + +static const struct parman_ops test_parman_lsort_ops = { + .base_count = TEST_PARMAN_BASE_COUNT, + .resize_step = TEST_PARMAN_RESIZE_STEP_COUNT, + .resize = test_parman_resize, + .move = test_parman_move, + .algo = PARMAN_ALGO_TYPE_LSORT, +}; + +static void test_parman_rnd_init(struct test_parman *test_parman) +{ + prandom_seed_state(&test_parman->rnd, 3141592653589793238ULL); +} + +static u32 test_parman_rnd_get(struct test_parman *test_parman) +{ + return prandom_u32_state(&test_parman->rnd); +} + +static unsigned long test_parman_priority_gen(struct test_parman *test_parman) +{ + unsigned long priority; + int i; + +again: + priority = test_parman_rnd_get(test_parman); + if (priority == 0) + goto again; + + for (i = 0; i < TEST_PARMAN_PRIO_COUNT; i++) { + struct test_parman_prio *prio = &test_parman->prios[i]; + + if (prio->priority == 0) + break; + if (prio->priority == priority) + goto again; + } + return priority; +} + +static void test_parman_prios_init(struct test_parman *test_parman) +{ + int i; + + for (i = 0; i < TEST_PARMAN_PRIO_COUNT; i++) { + struct test_parman_prio *prio = &test_parman->prios[i]; + + /* Assign random uniqueue priority to each prio structure */ + prio->priority = test_parman_priority_gen(test_parman); + parman_prio_init(test_parman->parman, &prio->parman_prio, + prio->priority); + } +} + +static void test_parman_prios_fini(struct test_parman *test_parman) +{ + int i; + + for (i = 0; i < TEST_PARMAN_PRIO_COUNT; i++) { + struct test_parman_prio *prio = &test_parman->prios[i]; + + parman_prio_fini(&prio->parman_prio); + } +} + +static void test_parman_items_init(struct test_parman *test_parman) +{ + int i; + + for (i = 0; i < TEST_PARMAN_ITEM_COUNT; i++) { + struct test_parman_item *item = &test_parman->items[i]; + unsigned int prio_index = test_parman_rnd_get(test_parman) & + TEST_PARMAN_PRIO_MASK; + + /* Assign random prio to each item structure */ + item->prio = &test_parman->prios[prio_index]; + } +} + +static void test_parman_items_fini(struct test_parman *test_parman) +{ + int i; + + for (i = 0; i < TEST_PARMAN_ITEM_COUNT; i++) { + struct test_parman_item *item = &test_parman->items[i]; + + if (!item->used) + continue; + parman_item_remove(test_parman->parman, + &item->prio->parman_prio, + &item->parman_item); + } +} + +static struct test_parman *test_parman_create(const struct parman_ops *ops) +{ + struct test_parman *test_parman; + int err; + + test_parman = kzalloc(sizeof(*test_parman), GFP_KERNEL); + if (!test_parman) + return ERR_PTR(-ENOMEM); + err = test_parman_resize(test_parman, TEST_PARMAN_BASE_COUNT); + if (err) + goto err_resize; + test_parman->parman = parman_create(ops, test_parman); + if (!test_parman->parman) { + err = -ENOMEM; + goto err_parman_create; + } + test_parman_rnd_init(test_parman); + test_parman_prios_init(test_parman); + test_parman_items_init(test_parman); + test_parman->run_budget = TEST_PARMAN_RUN_BUDGET; + return test_parman; + +err_parman_create: + test_parman_resize(test_parman, 0); +err_resize: + kfree(test_parman); + return ERR_PTR(err); +} + +static void test_parman_destroy(struct test_parman *test_parman) +{ + test_parman_items_fini(test_parman); + test_parman_prios_fini(test_parman); + parman_destroy(test_parman->parman); + test_parman_resize(test_parman, 0); + kfree(test_parman); +} + +static bool test_parman_run_check_budgets(struct test_parman *test_parman) +{ + if (test_parman->run_budget-- == 0) + return false; + if (test_parman->bulk_budget-- != 0) + return true; + + test_parman->bulk_budget = test_parman_rnd_get(test_parman) & + TEST_PARMAN_BULK_MAX_MASK; + test_parman->bulk_noop = test_parman_rnd_get(test_parman) & 1; + return true; +} + +static int test_parman_run(struct test_parman *test_parman) +{ + unsigned int i = test_parman_rnd_get(test_parman); + int err; + + while (test_parman_run_check_budgets(test_parman)) { + unsigned int item_index = i++ & TEST_PARMAN_ITEM_MASK; + struct test_parman_item *item = &test_parman->items[item_index]; + + if (test_parman->bulk_noop) + continue; + + if (!item->used) { + err = parman_item_add(test_parman->parman, + &item->prio->parman_prio, + &item->parman_item); + if (err) + return err; + test_parman->prio_array[item->parman_item.index] = item; + test_parman->used_items++; + } else { + test_parman->prio_array[item->parman_item.index] = NULL; + parman_item_remove(test_parman->parman, + &item->prio->parman_prio, + &item->parman_item); + test_parman->used_items--; + } + item->used = !item->used; + } + return 0; +} + +static int test_parman_check_array(struct test_parman *test_parman, + bool gaps_allowed) +{ + unsigned int last_unused_items = 0; + unsigned long last_priority = 0; + unsigned int used_items = 0; + int i; + + if (test_parman->prio_array_limit < TEST_PARMAN_BASE_COUNT) { + pr_err("Array limit is lower than the base count (%lu < %lu)\n", + test_parman->prio_array_limit, TEST_PARMAN_BASE_COUNT); + return -EINVAL; + } + + for (i = 0; i < test_parman->prio_array_limit; i++) { + struct test_parman_item *item = test_parman->prio_array[i]; + + if (!item) { + last_unused_items++; + continue; + } + if (last_unused_items && !gaps_allowed) { + pr_err("Gap found in array even though they are forbidden\n"); + return -EINVAL; + } + + last_unused_items = 0; + used_items++; + + if (item->prio->priority < last_priority) { + pr_err("Item belongs under higher priority then the last one (current: %lu, previous: %lu)\n", + item->prio->priority, last_priority); + return -EINVAL; + } + last_priority = item->prio->priority; + + if (item->parman_item.index != i) { + pr_err("Item has different index in compare to where it actually is (%lu != %d)\n", + item->parman_item.index, i); + return -EINVAL; + } + } + + if (used_items != test_parman->used_items) { + pr_err("Number of used items in array does not match (%u != %u)\n", + used_items, test_parman->used_items); + return -EINVAL; + } + + if (last_unused_items >= TEST_PARMAN_RESIZE_STEP_COUNT) { + pr_err("Number of unused item at the end of array is bigger than resize step (%u >= %lu)\n", + last_unused_items, TEST_PARMAN_RESIZE_STEP_COUNT); + return -EINVAL; + } + + pr_info("Priority array check successful\n"); + + return 0; +} + +static int test_parman_lsort(void) +{ + struct test_parman *test_parman; + int err; + + test_parman = test_parman_create(&test_parman_lsort_ops); + if (IS_ERR(test_parman)) + return PTR_ERR(test_parman); + + err = test_parman_run(test_parman); + if (err) + goto out; + + err = test_parman_check_array(test_parman, false); + if (err) + goto out; +out: + test_parman_destroy(test_parman); + return err; +} + +static int __init test_parman_init(void) +{ + return test_parman_lsort(); +} + +static void __exit test_parman_exit(void) +{ +} + +module_init(test_parman_init); +module_exit(test_parman_exit); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); +MODULE_DESCRIPTION("Test module for parman"); |