-/* SPDX-License-Identifier: GPL-2.0
- * Copyright(c) 2017 Jesper Dangaard Brouer, Red Hat, Inc.
- */
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2017 Jesper Dangaard Brouer, Red Hat, Inc. */
static const char *__doc__=
- "XDP monitor tool, based on tracepoints\n"
-;
+"XDP monitor tool, based on tracepoints\n";
static const char *__doc_err_only__=
- " NOTICE: Only tracking XDP redirect errors\n"
- " Enable TX success stats via '--stats'\n"
- " (which comes with a per packet processing overhead)\n"
-;
+" NOTICE: Only tracking XDP redirect errors\n"
+" Enable redirect success stats via '-s/--stats'\n"
+" (which comes with a per packet processing overhead)\n";
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <locale.h>
-
#include <sys/resource.h>
#include <getopt.h>
#include <net/if.h>
#include <time.h>
-
#include <signal.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "bpf_util.h"
+#include "xdp_sample_user.h"
+#include "xdp_monitor.skel.h"
-enum map_type {
- REDIRECT_ERR_CNT,
- EXCEPTION_CNT,
- CPUMAP_ENQUEUE_CNT,
- CPUMAP_KTHREAD_CNT,
- DEVMAP_XMIT_CNT,
-};
+static int mask = SAMPLE_REDIRECT_ERR_CNT | SAMPLE_CPUMAP_ENQUEUE_CNT |
+ SAMPLE_CPUMAP_KTHREAD_CNT | SAMPLE_EXCEPTION_CNT |
+ SAMPLE_DEVMAP_XMIT_CNT | SAMPLE_DEVMAP_XMIT_CNT_MULTI;
-static const char *const map_type_strings[] = {
- [REDIRECT_ERR_CNT] = "redirect_err_cnt",
- [EXCEPTION_CNT] = "exception_cnt",
- [CPUMAP_ENQUEUE_CNT] = "cpumap_enqueue_cnt",
- [CPUMAP_KTHREAD_CNT] = "cpumap_kthread_cnt",
- [DEVMAP_XMIT_CNT] = "devmap_xmit_cnt",
-};
-
-#define NUM_MAP 5
-#define NUM_TP 8
-
-static int tp_cnt;
-static int map_cnt;
-static int verbose = 1;
-static bool debug = false;
-struct bpf_map *map_data[NUM_MAP] = {};
-struct bpf_link *tp_links[NUM_TP] = {};
-struct bpf_object *obj;
+DEFINE_SAMPLE_INIT(xdp_monitor);
static const struct option long_options[] = {
- {"help", no_argument, NULL, 'h' },
- {"debug", no_argument, NULL, 'D' },
- {"stats", no_argument, NULL, 'S' },
- {"sec", required_argument, NULL, 's' },
- {0, 0, NULL, 0 }
-};
-
-static void int_exit(int sig)
-{
- /* Detach tracepoints */
- while (tp_cnt)
- bpf_link__destroy(tp_links[--tp_cnt]);
-
- bpf_object__close(obj);
- exit(0);
-}
-
-/* C standard specifies two constants, EXIT_SUCCESS(0) and EXIT_FAILURE(1) */
-#define EXIT_FAIL_MEM 5
-
-static void usage(char *argv[])
-{
- int i;
- printf("\nDOCUMENTATION:\n%s\n", __doc__);
- printf("\n");
- printf(" Usage: %s (options-see-below)\n",
- argv[0]);
- printf(" Listing options:\n");
- for (i = 0; long_options[i].name != 0; i++) {
- printf(" --%-15s", long_options[i].name);
- if (long_options[i].flag != NULL)
- printf(" flag (internal value:%d)",
- *long_options[i].flag);
- else
- printf("short-option: -%c",
- long_options[i].val);
- printf("\n");
- }
- printf("\n");
-}
-
-#define NANOSEC_PER_SEC 1000000000 /* 10^9 */
-static __u64 gettime(void)
-{
- struct timespec t;
- int res;
-
- res = clock_gettime(CLOCK_MONOTONIC, &t);
- if (res < 0) {
- fprintf(stderr, "Error with gettimeofday! (%i)\n", res);
- exit(EXIT_FAILURE);
- }
- return (__u64) t.tv_sec * NANOSEC_PER_SEC + t.tv_nsec;
-}
-
-enum {
- REDIR_SUCCESS = 0,
- REDIR_ERROR = 1,
-};
-#define REDIR_RES_MAX 2
-static const char *redir_names[REDIR_RES_MAX] = {
- [REDIR_SUCCESS] = "Success",
- [REDIR_ERROR] = "Error",
-};
-static const char *err2str(int err)
-{
- if (err < REDIR_RES_MAX)
- return redir_names[err];
- return NULL;
-}
-/* enum xdp_action */
-#define XDP_UNKNOWN XDP_REDIRECT + 1
-#define XDP_ACTION_MAX (XDP_UNKNOWN + 1)
-static const char *xdp_action_names[XDP_ACTION_MAX] = {
- [XDP_ABORTED] = "XDP_ABORTED",
- [XDP_DROP] = "XDP_DROP",
- [XDP_PASS] = "XDP_PASS",
- [XDP_TX] = "XDP_TX",
- [XDP_REDIRECT] = "XDP_REDIRECT",
- [XDP_UNKNOWN] = "XDP_UNKNOWN",
-};
-static const char *action2str(int action)
-{
- if (action < XDP_ACTION_MAX)
- return xdp_action_names[action];
- return NULL;
-}
-
-/* Common stats data record shared with _kern.c */
-struct datarec {
- __u64 processed;
- __u64 dropped;
- __u64 info;
- __u64 err;
-};
-#define MAX_CPUS 64
-
-/* Userspace structs for collection of stats from maps */
-struct record {
- __u64 timestamp;
- struct datarec total;
- struct datarec *cpu;
+ { "help", no_argument, NULL, 'h' },
+ { "stats", no_argument, NULL, 's' },
+ { "interval", required_argument, NULL, 'i' },
+ { "verbose", no_argument, NULL, 'v' },
+ {}
};
-struct u64rec {
- __u64 processed;
-};
-struct record_u64 {
- /* record for _kern side __u64 values */
- __u64 timestamp;
- struct u64rec total;
- struct u64rec *cpu;
-};
-
-struct stats_record {
- struct record_u64 xdp_redirect[REDIR_RES_MAX];
- struct record_u64 xdp_exception[XDP_ACTION_MAX];
- struct record xdp_cpumap_kthread;
- struct record xdp_cpumap_enqueue[MAX_CPUS];
- struct record xdp_devmap_xmit;
-};
-
-static bool map_collect_record(int fd, __u32 key, struct record *rec)
-{
- /* For percpu maps, userspace gets a value per possible CPU */
- unsigned int nr_cpus = bpf_num_possible_cpus();
- struct datarec values[nr_cpus];
- __u64 sum_processed = 0;
- __u64 sum_dropped = 0;
- __u64 sum_info = 0;
- __u64 sum_err = 0;
- int i;
-
- if ((bpf_map_lookup_elem(fd, &key, values)) != 0) {
- fprintf(stderr,
- "ERR: bpf_map_lookup_elem failed key:0x%X\n", key);
- return false;
- }
- /* Get time as close as possible to reading map contents */
- rec->timestamp = gettime();
-
- /* Record and sum values from each CPU */
- for (i = 0; i < nr_cpus; i++) {
- rec->cpu[i].processed = values[i].processed;
- sum_processed += values[i].processed;
- rec->cpu[i].dropped = values[i].dropped;
- sum_dropped += values[i].dropped;
- rec->cpu[i].info = values[i].info;
- sum_info += values[i].info;
- rec->cpu[i].err = values[i].err;
- sum_err += values[i].err;
- }
- rec->total.processed = sum_processed;
- rec->total.dropped = sum_dropped;
- rec->total.info = sum_info;
- rec->total.err = sum_err;
- return true;
-}
-
-static bool map_collect_record_u64(int fd, __u32 key, struct record_u64 *rec)
-{
- /* For percpu maps, userspace gets a value per possible CPU */
- unsigned int nr_cpus = bpf_num_possible_cpus();
- struct u64rec values[nr_cpus];
- __u64 sum_total = 0;
- int i;
-
- if ((bpf_map_lookup_elem(fd, &key, values)) != 0) {
- fprintf(stderr,
- "ERR: bpf_map_lookup_elem failed key:0x%X\n", key);
- return false;
- }
- /* Get time as close as possible to reading map contents */
- rec->timestamp = gettime();
-
- /* Record and sum values from each CPU */
- for (i = 0; i < nr_cpus; i++) {
- rec->cpu[i].processed = values[i].processed;
- sum_total += values[i].processed;
- }
- rec->total.processed = sum_total;
- return true;
-}
-
-static double calc_period(struct record *r, struct record *p)
-{
- double period_ = 0;
- __u64 period = 0;
-
- period = r->timestamp - p->timestamp;
- if (period > 0)
- period_ = ((double) period / NANOSEC_PER_SEC);
-
- return period_;
-}
-
-static double calc_period_u64(struct record_u64 *r, struct record_u64 *p)
-{
- double period_ = 0;
- __u64 period = 0;
-
- period = r->timestamp - p->timestamp;
- if (period > 0)
- period_ = ((double) period / NANOSEC_PER_SEC);
-
- return period_;
-}
-
-static double calc_pps(struct datarec *r, struct datarec *p, double period)
-{
- __u64 packets = 0;
- double pps = 0;
-
- if (period > 0) {
- packets = r->processed - p->processed;
- pps = packets / period;
- }
- return pps;
-}
-
-static double calc_pps_u64(struct u64rec *r, struct u64rec *p, double period)
-{
- __u64 packets = 0;
- double pps = 0;
-
- if (period > 0) {
- packets = r->processed - p->processed;
- pps = packets / period;
- }
- return pps;
-}
-
-static double calc_drop(struct datarec *r, struct datarec *p, double period)
-{
- __u64 packets = 0;
- double pps = 0;
-
- if (period > 0) {
- packets = r->dropped - p->dropped;
- pps = packets / period;
- }
- return pps;
-}
-
-static double calc_info(struct datarec *r, struct datarec *p, double period)
-{
- __u64 packets = 0;
- double pps = 0;
-
- if (period > 0) {
- packets = r->info - p->info;
- pps = packets / period;
- }
- return pps;
-}
-
-static double calc_err(struct datarec *r, struct datarec *p, double period)
-{
- __u64 packets = 0;
- double pps = 0;
-
- if (period > 0) {
- packets = r->err - p->err;
- pps = packets / period;
- }
- return pps;
-}
-
-static void stats_print(struct stats_record *stats_rec,
- struct stats_record *stats_prev,
- bool err_only)
-{
- unsigned int nr_cpus = bpf_num_possible_cpus();
- int rec_i = 0, i, to_cpu;
- double t = 0, pps = 0;
-
- /* Header */
- printf("%-15s %-7s %-12s %-12s %-9s\n",
- "XDP-event", "CPU:to", "pps", "drop-pps", "extra-info");
-
- /* tracepoint: xdp:xdp_redirect_* */
- if (err_only)
- rec_i = REDIR_ERROR;
-
- for (; rec_i < REDIR_RES_MAX; rec_i++) {
- struct record_u64 *rec, *prev;
- char *fmt1 = "%-15s %-7d %'-12.0f %'-12.0f %s\n";
- char *fmt2 = "%-15s %-7s %'-12.0f %'-12.0f %s\n";
-
- rec = &stats_rec->xdp_redirect[rec_i];
- prev = &stats_prev->xdp_redirect[rec_i];
- t = calc_period_u64(rec, prev);
-
- for (i = 0; i < nr_cpus; i++) {
- struct u64rec *r = &rec->cpu[i];
- struct u64rec *p = &prev->cpu[i];
-
- pps = calc_pps_u64(r, p, t);
- if (pps > 0)
- printf(fmt1, "XDP_REDIRECT", i,
- rec_i ? 0.0: pps, rec_i ? pps : 0.0,
- err2str(rec_i));
- }
- pps = calc_pps_u64(&rec->total, &prev->total, t);
- printf(fmt2, "XDP_REDIRECT", "total",
- rec_i ? 0.0: pps, rec_i ? pps : 0.0, err2str(rec_i));
- }
-
- /* tracepoint: xdp:xdp_exception */
- for (rec_i = 0; rec_i < XDP_ACTION_MAX; rec_i++) {
- struct record_u64 *rec, *prev;
- char *fmt1 = "%-15s %-7d %'-12.0f %'-12.0f %s\n";
- char *fmt2 = "%-15s %-7s %'-12.0f %'-12.0f %s\n";
-
- rec = &stats_rec->xdp_exception[rec_i];
- prev = &stats_prev->xdp_exception[rec_i];
- t = calc_period_u64(rec, prev);
-
- for (i = 0; i < nr_cpus; i++) {
- struct u64rec *r = &rec->cpu[i];
- struct u64rec *p = &prev->cpu[i];
-
- pps = calc_pps_u64(r, p, t);
- if (pps > 0)
- printf(fmt1, "Exception", i,
- 0.0, pps, action2str(rec_i));
- }
- pps = calc_pps_u64(&rec->total, &prev->total, t);
- if (pps > 0)
- printf(fmt2, "Exception", "total",
- 0.0, pps, action2str(rec_i));
- }
-
- /* cpumap enqueue stats */
- for (to_cpu = 0; to_cpu < MAX_CPUS; to_cpu++) {
- char *fmt1 = "%-15s %3d:%-3d %'-12.0f %'-12.0f %'-10.2f %s\n";
- char *fmt2 = "%-15s %3s:%-3d %'-12.0f %'-12.0f %'-10.2f %s\n";
- struct record *rec, *prev;
- char *info_str = "";
- double drop, info;
-
- rec = &stats_rec->xdp_cpumap_enqueue[to_cpu];
- prev = &stats_prev->xdp_cpumap_enqueue[to_cpu];
- t = calc_period(rec, prev);
- for (i = 0; i < nr_cpus; i++) {
- struct datarec *r = &rec->cpu[i];
- struct datarec *p = &prev->cpu[i];
-
- pps = calc_pps(r, p, t);
- drop = calc_drop(r, p, t);
- info = calc_info(r, p, t);
- if (info > 0) {
- info_str = "bulk-average";
- info = pps / info; /* calc average bulk size */
- }
- if (pps > 0)
- printf(fmt1, "cpumap-enqueue",
- i, to_cpu, pps, drop, info, info_str);
- }
- pps = calc_pps(&rec->total, &prev->total, t);
- if (pps > 0) {
- drop = calc_drop(&rec->total, &prev->total, t);
- info = calc_info(&rec->total, &prev->total, t);
- if (info > 0) {
- info_str = "bulk-average";
- info = pps / info; /* calc average bulk size */
- }
- printf(fmt2, "cpumap-enqueue",
- "sum", to_cpu, pps, drop, info, info_str);
- }
- }
-
- /* cpumap kthread stats */
- {
- char *fmt1 = "%-15s %-7d %'-12.0f %'-12.0f %'-10.0f %s\n";
- char *fmt2 = "%-15s %-7s %'-12.0f %'-12.0f %'-10.0f %s\n";
- struct record *rec, *prev;
- double drop, info;
- char *i_str = "";
-
- rec = &stats_rec->xdp_cpumap_kthread;
- prev = &stats_prev->xdp_cpumap_kthread;
- t = calc_period(rec, prev);
- for (i = 0; i < nr_cpus; i++) {
- struct datarec *r = &rec->cpu[i];
- struct datarec *p = &prev->cpu[i];
-
- pps = calc_pps(r, p, t);
- drop = calc_drop(r, p, t);
- info = calc_info(r, p, t);
- if (info > 0)
- i_str = "sched";
- if (pps > 0 || drop > 0)
- printf(fmt1, "cpumap-kthread",
- i, pps, drop, info, i_str);
- }
- pps = calc_pps(&rec->total, &prev->total, t);
- drop = calc_drop(&rec->total, &prev->total, t);
- info = calc_info(&rec->total, &prev->total, t);
- if (info > 0)
- i_str = "sched-sum";
- printf(fmt2, "cpumap-kthread", "total", pps, drop, info, i_str);
- }
-
- /* devmap ndo_xdp_xmit stats */
- {
- char *fmt1 = "%-15s %-7d %'-12.0f %'-12.0f %'-10.2f %s %s\n";
- char *fmt2 = "%-15s %-7s %'-12.0f %'-12.0f %'-10.2f %s %s\n";
- struct record *rec, *prev;
- double drop, info, err;
- char *i_str = "";
- char *err_str = "";
-
- rec = &stats_rec->xdp_devmap_xmit;
- prev = &stats_prev->xdp_devmap_xmit;
- t = calc_period(rec, prev);
- for (i = 0; i < nr_cpus; i++) {
- struct datarec *r = &rec->cpu[i];
- struct datarec *p = &prev->cpu[i];
-
- pps = calc_pps(r, p, t);
- drop = calc_drop(r, p, t);
- info = calc_info(r, p, t);
- err = calc_err(r, p, t);
- if (info > 0) {
- i_str = "bulk-average";
- info = (pps+drop) / info; /* calc avg bulk */
- }
- if (err > 0)
- err_str = "drv-err";
- if (pps > 0 || drop > 0)
- printf(fmt1, "devmap-xmit",
- i, pps, drop, info, i_str, err_str);
- }
- pps = calc_pps(&rec->total, &prev->total, t);
- drop = calc_drop(&rec->total, &prev->total, t);
- info = calc_info(&rec->total, &prev->total, t);
- err = calc_err(&rec->total, &prev->total, t);
- if (info > 0) {
- i_str = "bulk-average";
- info = (pps+drop) / info; /* calc avg bulk */
- }
- if (err > 0)
- err_str = "drv-err";
- printf(fmt2, "devmap-xmit", "total", pps, drop,
- info, i_str, err_str);
- }
-
- printf("\n");
-}
-
-static bool stats_collect(struct stats_record *rec)
-{
- int fd;
- int i;
-
- /* TODO: Detect if someone unloaded the perf event_fd's, as
- * this can happen by someone running perf-record -e
- */
-
- fd = bpf_map__fd(map_data[REDIRECT_ERR_CNT]);
- for (i = 0; i < REDIR_RES_MAX; i++)
- map_collect_record_u64(fd, i, &rec->xdp_redirect[i]);
-
- fd = bpf_map__fd(map_data[EXCEPTION_CNT]);
- for (i = 0; i < XDP_ACTION_MAX; i++) {
- map_collect_record_u64(fd, i, &rec->xdp_exception[i]);
- }
-
- fd = bpf_map__fd(map_data[CPUMAP_ENQUEUE_CNT]);
- for (i = 0; i < MAX_CPUS; i++)
- map_collect_record(fd, i, &rec->xdp_cpumap_enqueue[i]);
-
- fd = bpf_map__fd(map_data[CPUMAP_KTHREAD_CNT]);
- map_collect_record(fd, 0, &rec->xdp_cpumap_kthread);
-
- fd = bpf_map__fd(map_data[DEVMAP_XMIT_CNT]);
- map_collect_record(fd, 0, &rec->xdp_devmap_xmit);
-
- return true;
-}
-
-static void *alloc_rec_per_cpu(int record_size)
-{
- unsigned int nr_cpus = bpf_num_possible_cpus();
- void *array;
-
- array = calloc(nr_cpus, record_size);
- if (!array) {
- fprintf(stderr, "Mem alloc error (nr_cpus:%u)\n", nr_cpus);
- exit(EXIT_FAIL_MEM);
- }
- return array;
-}
-
-static struct stats_record *alloc_stats_record(void)
-{
- struct stats_record *rec;
- int rec_sz;
- int i;
-
- /* Alloc main stats_record structure */
- rec = calloc(1, sizeof(*rec));
- if (!rec) {
- fprintf(stderr, "Mem alloc error\n");
- exit(EXIT_FAIL_MEM);
- }
-
- /* Alloc stats stored per CPU for each record */
- rec_sz = sizeof(struct u64rec);
- for (i = 0; i < REDIR_RES_MAX; i++)
- rec->xdp_redirect[i].cpu = alloc_rec_per_cpu(rec_sz);
-
- for (i = 0; i < XDP_ACTION_MAX; i++)
- rec->xdp_exception[i].cpu = alloc_rec_per_cpu(rec_sz);
-
- rec_sz = sizeof(struct datarec);
- rec->xdp_cpumap_kthread.cpu = alloc_rec_per_cpu(rec_sz);
- rec->xdp_devmap_xmit.cpu = alloc_rec_per_cpu(rec_sz);
-
- for (i = 0; i < MAX_CPUS; i++)
- rec->xdp_cpumap_enqueue[i].cpu = alloc_rec_per_cpu(rec_sz);
-
- return rec;
-}
-
-static void free_stats_record(struct stats_record *r)
-{
- int i;
-
- for (i = 0; i < REDIR_RES_MAX; i++)
- free(r->xdp_redirect[i].cpu);
-
- for (i = 0; i < XDP_ACTION_MAX; i++)
- free(r->xdp_exception[i].cpu);
-
- free(r->xdp_cpumap_kthread.cpu);
- free(r->xdp_devmap_xmit.cpu);
-
- for (i = 0; i < MAX_CPUS; i++)
- free(r->xdp_cpumap_enqueue[i].cpu);
-
- free(r);
-}
-
-/* Pointer swap trick */
-static inline void swap(struct stats_record **a, struct stats_record **b)
-{
- struct stats_record *tmp;
-
- tmp = *a;
- *a = *b;
- *b = tmp;
-}
-
-static void stats_poll(int interval, bool err_only)
-{
- struct stats_record *rec, *prev;
-
- rec = alloc_stats_record();
- prev = alloc_stats_record();
- stats_collect(rec);
-
- if (err_only)
- printf("\n%s\n", __doc_err_only__);
-
- /* Trick to pretty printf with thousands separators use %' */
- setlocale(LC_NUMERIC, "en_US");
-
- /* Header */
- if (verbose)
- printf("\n%s", __doc__);
-
- /* TODO Need more advanced stats on error types */
- if (verbose) {
- printf(" - Stats map0: %s\n", bpf_map__name(map_data[0]));
- printf(" - Stats map1: %s\n", bpf_map__name(map_data[1]));
- printf("\n");
- }
- fflush(stdout);
-
- while (1) {
- swap(&prev, &rec);
- stats_collect(rec);
- stats_print(rec, prev, err_only);
- fflush(stdout);
- sleep(interval);
- }
-
- free_stats_record(rec);
- free_stats_record(prev);
-}
-
-static void print_bpf_prog_info(void)
-{
- struct bpf_program *prog;
- struct bpf_map *map;
- int i = 0;
-
- /* Prog info */
- printf("Loaded BPF prog have %d bpf program(s)\n", tp_cnt);
- bpf_object__for_each_program(prog, obj) {
- printf(" - prog_fd[%d] = fd(%d)\n", i, bpf_program__fd(prog));
- i++;
- }
-
- i = 0;
- /* Maps info */
- printf("Loaded BPF prog have %d map(s)\n", map_cnt);
- bpf_object__for_each_map(map, obj) {
- const char *name = bpf_map__name(map);
- int fd = bpf_map__fd(map);
-
- printf(" - map_data[%d] = fd(%d) name:%s\n", i, fd, name);
- i++;
- }
-
- /* Event info */
- printf("Searching for (max:%d) event file descriptor(s)\n", tp_cnt);
- for (i = 0; i < tp_cnt; i++) {
- int fd = bpf_link__fd(tp_links[i]);
-
- if (fd != -1)
- printf(" - event_fd[%d] = fd(%d)\n", i, fd);
- }
-}
int main(int argc, char **argv)
{
- struct bpf_program *prog;
- int longindex = 0, opt;
- int ret = EXIT_FAILURE;
- enum map_type type;
- char filename[256];
-
- /* Default settings: */
+ unsigned long interval = 2;
+ int ret = EXIT_FAIL_OPTION;
+ struct xdp_monitor *skel;
bool errors_only = true;
- int interval = 2;
+ int longindex = 0, opt;
+ bool error = true;
/* Parse commands line args */
- while ((opt = getopt_long(argc, argv, "hDSs:",
+ while ((opt = getopt_long(argc, argv, "si:vh",
long_options, &longindex)) != -1) {
switch (opt) {
- case 'D':
- debug = true;
- break;
- case 'S':
+ case 's':
errors_only = false;
+ mask |= SAMPLE_REDIRECT_CNT;
break;
- case 's':
- interval = atoi(optarg);
+ case 'i':
+ interval = strtoul(optarg, NULL, 0);
+ break;
+ case 'v':
+ sample_switch_mode();
break;
case 'h':
+ error = false;
default:
- usage(argv);
+ sample_usage(argv, long_options, __doc__, mask, error);
return ret;
}
}
- snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
-
- /* Remove tracepoint program when program is interrupted or killed */
- signal(SIGINT, int_exit);
- signal(SIGTERM, int_exit);
-
- obj = bpf_object__open_file(filename, NULL);
- if (libbpf_get_error(obj)) {
- printf("ERROR: opening BPF object file failed\n");
- obj = NULL;
- goto cleanup;
- }
-
- /* load BPF program */
- if (bpf_object__load(obj)) {
- printf("ERROR: loading BPF object file failed\n");
- goto cleanup;
+ skel = xdp_monitor__open();
+ if (!skel) {
+ fprintf(stderr, "Failed to xdp_monitor__open: %s\n",
+ strerror(errno));
+ ret = EXIT_FAIL_BPF;
+ goto end;
}
- for (type = 0; type < NUM_MAP; type++) {
- map_data[type] =
- bpf_object__find_map_by_name(obj, map_type_strings[type]);
-
- if (libbpf_get_error(map_data[type])) {
- printf("ERROR: finding a map in obj file failed\n");
- goto cleanup;
- }
- map_cnt++;
+ ret = sample_init_pre_load(skel);
+ if (ret < 0) {
+ fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
+ ret = EXIT_FAIL_BPF;
+ goto end_destroy;
}
- bpf_object__for_each_program(prog, obj) {
- tp_links[tp_cnt] = bpf_program__attach(prog);
- if (libbpf_get_error(tp_links[tp_cnt])) {
- printf("ERROR: bpf_program__attach failed\n");
- tp_links[tp_cnt] = NULL;
- goto cleanup;
- }
- tp_cnt++;
+ ret = xdp_monitor__load(skel);
+ if (ret < 0) {
+ fprintf(stderr, "Failed to xdp_monitor__load: %s\n", strerror(errno));
+ ret = EXIT_FAIL_BPF;
+ goto end_destroy;
}
- if (debug) {
- print_bpf_prog_info();
+ ret = sample_init(skel, mask);
+ if (ret < 0) {
+ fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
+ ret = EXIT_FAIL_BPF;
+ goto end_destroy;
}
- /* Unload/stop tracepoint event by closing bpf_link's */
- if (errors_only) {
- /* The bpf_link[i] depend on the order of
- * the functions was defined in _kern.c
- */
- bpf_link__destroy(tp_links[2]); /* tracepoint/xdp/xdp_redirect */
- tp_links[2] = NULL;
+ if (errors_only)
+ printf("%s", __doc_err_only__);
- bpf_link__destroy(tp_links[3]); /* tracepoint/xdp/xdp_redirect_map */
- tp_links[3] = NULL;
+ ret = sample_run(interval, NULL, NULL);
+ if (ret < 0) {
+ fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
+ ret = EXIT_FAIL;
+ goto end_destroy;
}
-
- stats_poll(interval, errors_only);
-
- ret = EXIT_SUCCESS;
-
-cleanup:
- /* Detach tracepoints */
- while (tp_cnt)
- bpf_link__destroy(tp_links[--tp_cnt]);
-
- bpf_object__close(obj);
- return ret;
+ ret = EXIT_OK;
+end_destroy:
+ xdp_monitor__destroy(skel);
+end:
+ sample_exit(ret);
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff