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(). ... --- samples/bpf/map_perf_test_user.c | 503 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 503 insertions(+) create mode 100644 samples/bpf/map_perf_test_user.c (limited to 'samples/bpf/map_perf_test_user.c') diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c new file mode 100644 index 000000000..d2fbcf963 --- /dev/null +++ b/samples/bpf/map_perf_test_user.c @@ -0,0 +1,503 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (c) 2016 Facebook + */ +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define TEST_BIT(t) (1U << (t)) +#define MAX_NR_CPUS 1024 + +static __u64 time_get_ns(void) +{ + struct timespec ts; + + clock_gettime(CLOCK_MONOTONIC, &ts); + return ts.tv_sec * 1000000000ull + ts.tv_nsec; +} + +enum test_type { + HASH_PREALLOC, + PERCPU_HASH_PREALLOC, + HASH_KMALLOC, + PERCPU_HASH_KMALLOC, + LRU_HASH_PREALLOC, + NOCOMMON_LRU_HASH_PREALLOC, + LPM_KMALLOC, + HASH_LOOKUP, + ARRAY_LOOKUP, + INNER_LRU_HASH_PREALLOC, + LRU_HASH_LOOKUP, + NR_TESTS, +}; + +const char *test_map_names[NR_TESTS] = { + [HASH_PREALLOC] = "hash_map", + [PERCPU_HASH_PREALLOC] = "percpu_hash_map", + [HASH_KMALLOC] = "hash_map_alloc", + [PERCPU_HASH_KMALLOC] = "percpu_hash_map_alloc", + [LRU_HASH_PREALLOC] = "lru_hash_map", + [NOCOMMON_LRU_HASH_PREALLOC] = "nocommon_lru_hash_map", + [LPM_KMALLOC] = "lpm_trie_map_alloc", + [HASH_LOOKUP] = "hash_map", + [ARRAY_LOOKUP] = "array_map", + [INNER_LRU_HASH_PREALLOC] = "inner_lru_hash_map", + [LRU_HASH_LOOKUP] = "lru_hash_lookup_map", +}; + +enum map_idx { + array_of_lru_hashs_idx, + hash_map_alloc_idx, + lru_hash_lookup_idx, + NR_IDXES, +}; + +static int map_fd[NR_IDXES]; + +static int test_flags = ~0; +static uint32_t num_map_entries; +static uint32_t inner_lru_hash_size; +static int lru_hash_lookup_test_entries = 32; +static uint32_t max_cnt = 10000; + +static int check_test_flags(enum test_type t) +{ + return test_flags & TEST_BIT(t); +} + +static void test_hash_prealloc(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_getuid); + printf("%d:hash_map_perf pre-alloc %lld events per sec\n", + cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static int pre_test_lru_hash_lookup(int tasks) +{ + int fd = map_fd[lru_hash_lookup_idx]; + uint32_t key; + long val = 1; + int ret; + + if (num_map_entries > lru_hash_lookup_test_entries) + lru_hash_lookup_test_entries = num_map_entries; + + /* Populate the lru_hash_map for LRU_HASH_LOOKUP perf test. + * + * It is fine that the user requests for a map with + * num_map_entries < 32 and some of the later lru hash lookup + * may return not found. For LRU map, we are not interested + * in such small map performance. + */ + for (key = 0; key < lru_hash_lookup_test_entries; key++) { + ret = bpf_map_update_elem(fd, &key, &val, BPF_NOEXIST); + if (ret) + return ret; + } + + return 0; +} + +static void do_test_lru(enum test_type test, int cpu) +{ + static int inner_lru_map_fds[MAX_NR_CPUS]; + + struct sockaddr_in6 in6 = { .sin6_family = AF_INET6 }; + const char *test_name; + __u64 start_time; + int i, ret; + + if (test == INNER_LRU_HASH_PREALLOC && cpu) { + /* If CPU is not 0, create inner_lru hash map and insert the fd + * value into the array_of_lru_hash map. In case of CPU 0, + * 'inner_lru_hash_map' was statically inserted on the map init + */ + int outer_fd = map_fd[array_of_lru_hashs_idx]; + unsigned int mycpu, mynode; + LIBBPF_OPTS(bpf_map_create_opts, opts, + .map_flags = BPF_F_NUMA_NODE, + ); + + assert(cpu < MAX_NR_CPUS); + + ret = syscall(__NR_getcpu, &mycpu, &mynode, NULL); + assert(!ret); + + opts.numa_node = mynode; + inner_lru_map_fds[cpu] = + bpf_map_create(BPF_MAP_TYPE_LRU_HASH, + test_map_names[INNER_LRU_HASH_PREALLOC], + sizeof(uint32_t), + sizeof(long), + inner_lru_hash_size, &opts); + if (inner_lru_map_fds[cpu] == -1) { + printf("cannot create BPF_MAP_TYPE_LRU_HASH %s(%d)\n", + strerror(errno), errno); + exit(1); + } + + ret = bpf_map_update_elem(outer_fd, &cpu, + &inner_lru_map_fds[cpu], + BPF_ANY); + if (ret) { + printf("cannot update ARRAY_OF_LRU_HASHS with key:%u. %s(%d)\n", + cpu, strerror(errno), errno); + exit(1); + } + } + + in6.sin6_addr.s6_addr16[0] = 0xdead; + in6.sin6_addr.s6_addr16[1] = 0xbeef; + + if (test == LRU_HASH_PREALLOC) { + test_name = "lru_hash_map_perf"; + in6.sin6_addr.s6_addr16[2] = 0; + } else if (test == NOCOMMON_LRU_HASH_PREALLOC) { + test_name = "nocommon_lru_hash_map_perf"; + in6.sin6_addr.s6_addr16[2] = 1; + } else if (test == INNER_LRU_HASH_PREALLOC) { + test_name = "inner_lru_hash_map_perf"; + in6.sin6_addr.s6_addr16[2] = 2; + } else if (test == LRU_HASH_LOOKUP) { + test_name = "lru_hash_lookup_perf"; + in6.sin6_addr.s6_addr16[2] = 3; + in6.sin6_addr.s6_addr32[3] = 0; + } else { + assert(0); + } + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) { + ret = connect(-1, (const struct sockaddr *)&in6, sizeof(in6)); + assert(ret == -1 && errno == EBADF); + if (in6.sin6_addr.s6_addr32[3] < + lru_hash_lookup_test_entries - 32) + in6.sin6_addr.s6_addr32[3] += 32; + else + in6.sin6_addr.s6_addr32[3] = 0; + } + printf("%d:%s pre-alloc %lld events per sec\n", + cpu, test_name, + max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static void test_lru_hash_prealloc(int cpu) +{ + do_test_lru(LRU_HASH_PREALLOC, cpu); +} + +static void test_nocommon_lru_hash_prealloc(int cpu) +{ + do_test_lru(NOCOMMON_LRU_HASH_PREALLOC, cpu); +} + +static void test_inner_lru_hash_prealloc(int cpu) +{ + do_test_lru(INNER_LRU_HASH_PREALLOC, cpu); +} + +static void test_lru_hash_lookup(int cpu) +{ + do_test_lru(LRU_HASH_LOOKUP, cpu); +} + +static void test_percpu_hash_prealloc(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_geteuid); + printf("%d:percpu_hash_map_perf pre-alloc %lld events per sec\n", + cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static void test_hash_kmalloc(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_getgid); + printf("%d:hash_map_perf kmalloc %lld events per sec\n", + cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static void test_percpu_hash_kmalloc(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_getegid); + printf("%d:percpu_hash_map_perf kmalloc %lld events per sec\n", + cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static void test_lpm_kmalloc(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_gettid); + printf("%d:lpm_perf kmalloc %lld events per sec\n", + cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); +} + +static void test_hash_lookup(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_getpgid, 0); + printf("%d:hash_lookup %lld lookups per sec\n", + cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time)); +} + +static void test_array_lookup(int cpu) +{ + __u64 start_time; + int i; + + start_time = time_get_ns(); + for (i = 0; i < max_cnt; i++) + syscall(__NR_getppid, 0); + printf("%d:array_lookup %lld lookups per sec\n", + cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time)); +} + +typedef int (*pre_test_func)(int tasks); +const pre_test_func pre_test_funcs[] = { + [LRU_HASH_LOOKUP] = pre_test_lru_hash_lookup, +}; + +typedef void (*test_func)(int cpu); +const test_func test_funcs[] = { + [HASH_PREALLOC] = test_hash_prealloc, + [PERCPU_HASH_PREALLOC] = test_percpu_hash_prealloc, + [HASH_KMALLOC] = test_hash_kmalloc, + [PERCPU_HASH_KMALLOC] = test_percpu_hash_kmalloc, + [LRU_HASH_PREALLOC] = test_lru_hash_prealloc, + [NOCOMMON_LRU_HASH_PREALLOC] = test_nocommon_lru_hash_prealloc, + [LPM_KMALLOC] = test_lpm_kmalloc, + [HASH_LOOKUP] = test_hash_lookup, + [ARRAY_LOOKUP] = test_array_lookup, + [INNER_LRU_HASH_PREALLOC] = test_inner_lru_hash_prealloc, + [LRU_HASH_LOOKUP] = test_lru_hash_lookup, +}; + +static int pre_test(int tasks) +{ + int i; + + for (i = 0; i < NR_TESTS; i++) { + if (pre_test_funcs[i] && check_test_flags(i)) { + int ret = pre_test_funcs[i](tasks); + + if (ret) + return ret; + } + } + + return 0; +} + +static void loop(int cpu) +{ + cpu_set_t cpuset; + int i; + + CPU_ZERO(&cpuset); + CPU_SET(cpu, &cpuset); + sched_setaffinity(0, sizeof(cpuset), &cpuset); + + for (i = 0; i < NR_TESTS; i++) { + if (check_test_flags(i)) + test_funcs[i](cpu); + } +} + +static void run_perf_test(int tasks) +{ + pid_t pid[tasks]; + int i; + + assert(!pre_test(tasks)); + + for (i = 0; i < tasks; i++) { + pid[i] = fork(); + if (pid[i] == 0) { + loop(i); + exit(0); + } else if (pid[i] == -1) { + printf("couldn't spawn #%d process\n", i); + exit(1); + } + } + for (i = 0; i < tasks; i++) { + int status; + + assert(waitpid(pid[i], &status, 0) == pid[i]); + assert(status == 0); + } +} + +static void fill_lpm_trie(void) +{ + struct bpf_lpm_trie_key *key; + unsigned long value = 0; + unsigned int i; + int r; + + key = alloca(sizeof(*key) + 4); + key->prefixlen = 32; + + for (i = 0; i < 512; ++i) { + key->prefixlen = rand() % 33; + key->data[0] = rand() & 0xff; + key->data[1] = rand() & 0xff; + key->data[2] = rand() & 0xff; + key->data[3] = rand() & 0xff; + r = bpf_map_update_elem(map_fd[hash_map_alloc_idx], + key, &value, 0); + assert(!r); + } + + key->prefixlen = 32; + key->data[0] = 192; + key->data[1] = 168; + key->data[2] = 0; + key->data[3] = 1; + value = 128; + + r = bpf_map_update_elem(map_fd[hash_map_alloc_idx], key, &value, 0); + assert(!r); +} + +static void fixup_map(struct bpf_object *obj) +{ + struct bpf_map *map; + int i; + + bpf_object__for_each_map(map, obj) { + const char *name = bpf_map__name(map); + + /* Only change the max_entries for the enabled test(s) */ + for (i = 0; i < NR_TESTS; i++) { + if (!strcmp(test_map_names[i], name) && + (check_test_flags(i))) { + bpf_map__set_max_entries(map, num_map_entries); + continue; + } + } + } + + inner_lru_hash_size = num_map_entries; +} + +int main(int argc, char **argv) +{ + int nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); + struct bpf_link *links[8]; + struct bpf_program *prog; + struct bpf_object *obj; + struct bpf_map *map; + char filename[256]; + int i = 0; + + if (argc > 1) + test_flags = atoi(argv[1]) ? : test_flags; + + if (argc > 2) + nr_cpus = atoi(argv[2]) ? : nr_cpus; + + if (argc > 3) + num_map_entries = atoi(argv[3]); + + if (argc > 4) + max_cnt = atoi(argv[4]); + + snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]); + obj = bpf_object__open_file(filename, NULL); + if (libbpf_get_error(obj)) { + fprintf(stderr, "ERROR: opening BPF object file failed\n"); + return 0; + } + + map = bpf_object__find_map_by_name(obj, "inner_lru_hash_map"); + if (libbpf_get_error(map)) { + fprintf(stderr, "ERROR: finding a map in obj file failed\n"); + goto cleanup; + } + + inner_lru_hash_size = bpf_map__max_entries(map); + if (!inner_lru_hash_size) { + fprintf(stderr, "ERROR: failed to get map attribute\n"); + goto cleanup; + } + + /* resize BPF map prior to loading */ + if (num_map_entries > 0) + fixup_map(obj); + + /* load BPF program */ + if (bpf_object__load(obj)) { + fprintf(stderr, "ERROR: loading BPF object file failed\n"); + goto cleanup; + } + + map_fd[0] = bpf_object__find_map_fd_by_name(obj, "array_of_lru_hashs"); + map_fd[1] = bpf_object__find_map_fd_by_name(obj, "hash_map_alloc"); + map_fd[2] = bpf_object__find_map_fd_by_name(obj, "lru_hash_lookup_map"); + if (map_fd[0] < 0 || map_fd[1] < 0 || map_fd[2] < 0) { + fprintf(stderr, "ERROR: finding a map in obj file failed\n"); + goto cleanup; + } + + bpf_object__for_each_program(prog, obj) { + links[i] = bpf_program__attach(prog); + if (libbpf_get_error(links[i])) { + fprintf(stderr, "ERROR: bpf_program__attach failed\n"); + links[i] = NULL; + goto cleanup; + } + i++; + } + + fill_lpm_trie(); + + run_perf_test(nr_cpus); + +cleanup: + for (i--; i >= 0; i--) + bpf_link__destroy(links[i]); + + bpf_object__close(obj); + return 0; +} -- cgit v1.2.3