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![Yafang Shao](/assets/img/avatar_default.png)
We have switched to memcg-based memory accouting and thus the rlimit is not needed any more. LIBBPF_STRICT_AUTO_RLIMIT_MEMLOCK was introduced in libbpf for backward compatibility, so we can use it instead now. This patch also removes the useless header sys/resource.h from many files in samples/bpf. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20220409125958.92629-2-laoar.shao@gmail.com
1673 lines
42 KiB
C
1673 lines
42 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#define _GNU_SOURCE
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#include <arpa/inet.h>
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#include <bpf/bpf.h>
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#include <bpf/libbpf.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <linux/ethtool.h>
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#include <linux/hashtable.h>
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#include <linux/if_link.h>
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#include <linux/jhash.h>
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#include <linux/limits.h>
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#include <linux/list.h>
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#include <linux/sockios.h>
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#include <locale.h>
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#include <math.h>
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#include <net/if.h>
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#include <poll.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/signalfd.h>
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#include <sys/sysinfo.h>
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#include <sys/timerfd.h>
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#include <sys/utsname.h>
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#include <time.h>
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#include <unistd.h>
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#include "bpf_util.h"
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#include "xdp_sample_user.h"
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#define __sample_print(fmt, cond, ...) \
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({ \
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if (cond) \
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printf(fmt, ##__VA_ARGS__); \
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})
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#define print_always(fmt, ...) __sample_print(fmt, 1, ##__VA_ARGS__)
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#define print_default(fmt, ...) \
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__sample_print(fmt, sample_log_level & LL_DEFAULT, ##__VA_ARGS__)
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#define __print_err(err, fmt, ...) \
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({ \
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__sample_print(fmt, err > 0 || sample_log_level & LL_DEFAULT, \
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##__VA_ARGS__); \
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sample_err_exp = sample_err_exp ? true : err > 0; \
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})
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#define print_err(err, fmt, ...) __print_err(err, fmt, ##__VA_ARGS__)
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#define __COLUMN(x) "%'10" x " %-13s"
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#define FMT_COLUMNf __COLUMN(".0f")
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#define FMT_COLUMNd __COLUMN("d")
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#define FMT_COLUMNl __COLUMN("llu")
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#define RX(rx) rx, "rx/s"
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#define PPS(pps) pps, "pkt/s"
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#define DROP(drop) drop, "drop/s"
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#define ERR(err) err, "error/s"
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#define HITS(hits) hits, "hit/s"
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#define XMIT(xmit) xmit, "xmit/s"
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#define PASS(pass) pass, "pass/s"
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#define REDIR(redir) redir, "redir/s"
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#define NANOSEC_PER_SEC 1000000000 /* 10^9 */
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#define XDP_UNKNOWN (XDP_REDIRECT + 1)
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#define XDP_ACTION_MAX (XDP_UNKNOWN + 1)
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#define XDP_REDIRECT_ERR_MAX 7
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enum map_type {
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MAP_RX,
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MAP_REDIRECT_ERR,
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MAP_CPUMAP_ENQUEUE,
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MAP_CPUMAP_KTHREAD,
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MAP_EXCEPTION,
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MAP_DEVMAP_XMIT,
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MAP_DEVMAP_XMIT_MULTI,
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NUM_MAP,
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};
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enum log_level {
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LL_DEFAULT = 1U << 0,
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LL_SIMPLE = 1U << 1,
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LL_DEBUG = 1U << 2,
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};
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struct record {
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__u64 timestamp;
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struct datarec total;
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struct datarec *cpu;
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};
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struct map_entry {
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struct hlist_node node;
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__u64 pair;
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struct record val;
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};
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struct stats_record {
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struct record rx_cnt;
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struct record redir_err[XDP_REDIRECT_ERR_MAX];
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struct record kthread;
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struct record exception[XDP_ACTION_MAX];
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struct record devmap_xmit;
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DECLARE_HASHTABLE(xmit_map, 5);
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struct record enq[];
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};
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struct sample_output {
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struct {
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__u64 rx;
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__u64 redir;
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__u64 drop;
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__u64 drop_xmit;
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__u64 err;
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__u64 xmit;
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} totals;
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struct {
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union {
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__u64 pps;
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__u64 num;
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};
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__u64 drop;
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__u64 err;
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} rx_cnt;
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struct {
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__u64 suc;
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__u64 err;
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} redir_cnt;
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struct {
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__u64 hits;
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} except_cnt;
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struct {
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__u64 pps;
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__u64 drop;
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__u64 err;
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double bavg;
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} xmit_cnt;
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};
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struct xdp_desc {
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int ifindex;
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__u32 prog_id;
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int flags;
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} sample_xdp_progs[32];
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struct datarec *sample_mmap[NUM_MAP];
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struct bpf_map *sample_map[NUM_MAP];
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size_t sample_map_count[NUM_MAP];
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enum log_level sample_log_level;
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struct sample_output sample_out;
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unsigned long sample_interval;
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bool sample_err_exp;
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int sample_xdp_cnt;
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int sample_n_cpus;
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int sample_sig_fd;
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int sample_mask;
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static const char *xdp_redirect_err_names[XDP_REDIRECT_ERR_MAX] = {
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/* Key=1 keeps unknown errors */
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"Success",
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"Unknown",
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"EINVAL",
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"ENETDOWN",
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"EMSGSIZE",
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"EOPNOTSUPP",
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"ENOSPC",
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};
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/* Keyed from Unknown */
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static const char *xdp_redirect_err_help[XDP_REDIRECT_ERR_MAX - 1] = {
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"Unknown error",
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"Invalid redirection",
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"Device being redirected to is down",
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"Packet length too large for device",
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"Operation not supported",
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"No space in ptr_ring of cpumap kthread",
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};
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static const char *xdp_action_names[XDP_ACTION_MAX] = {
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[XDP_ABORTED] = "XDP_ABORTED",
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[XDP_DROP] = "XDP_DROP",
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[XDP_PASS] = "XDP_PASS",
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[XDP_TX] = "XDP_TX",
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[XDP_REDIRECT] = "XDP_REDIRECT",
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[XDP_UNKNOWN] = "XDP_UNKNOWN",
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};
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static __u64 gettime(void)
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{
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struct timespec t;
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int res;
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res = clock_gettime(CLOCK_MONOTONIC, &t);
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if (res < 0) {
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fprintf(stderr, "Error with gettimeofday! (%i)\n", res);
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return UINT64_MAX;
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}
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return (__u64)t.tv_sec * NANOSEC_PER_SEC + t.tv_nsec;
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}
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static const char *action2str(int action)
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{
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if (action < XDP_ACTION_MAX)
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return xdp_action_names[action];
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return NULL;
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}
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static void sample_print_help(int mask)
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{
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printf("Output format description\n\n"
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"By default, redirect success statistics are disabled, use -s to enable.\n"
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"The terse output mode is default, verbose mode can be activated using -v\n"
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"Use SIGQUIT (Ctrl + \\) to switch the mode dynamically at runtime\n\n"
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"Terse mode displays at most the following fields:\n"
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" rx/s Number of packets received per second\n"
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" redir/s Number of packets successfully redirected per second\n"
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" err,drop/s Aggregated count of errors per second (including dropped packets)\n"
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" xmit/s Number of packets transmitted on the output device per second\n\n"
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"Output description for verbose mode:\n"
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" FIELD DESCRIPTION\n");
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if (mask & SAMPLE_RX_CNT) {
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printf(" receive\t\tDisplays the number of packets received & errors encountered\n"
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" \t\t\tWhenever an error or packet drop occurs, details of per CPU error\n"
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" \t\t\tand drop statistics will be expanded inline in terse mode.\n"
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" \t\t\t\tpkt/s - Packets received per second\n"
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" \t\t\t\tdrop/s - Packets dropped per second\n"
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" \t\t\t\terror/s - Errors encountered per second\n\n");
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}
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if (mask & (SAMPLE_REDIRECT_CNT | SAMPLE_REDIRECT_ERR_CNT)) {
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printf(" redirect\t\tDisplays the number of packets successfully redirected\n"
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" \t\t\tErrors encountered are expanded under redirect_err field\n"
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" \t\t\tNote that passing -s to enable it has a per packet overhead\n"
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" \t\t\t\tredir/s - Packets redirected successfully per second\n\n"
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" redirect_err\t\tDisplays the number of packets that failed redirection\n"
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" \t\t\tThe errno is expanded under this field with per CPU count\n"
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" \t\t\tThe recognized errors are:\n");
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for (int i = 2; i < XDP_REDIRECT_ERR_MAX; i++)
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printf("\t\t\t %s: %s\n", xdp_redirect_err_names[i],
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xdp_redirect_err_help[i - 1]);
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printf(" \n\t\t\t\terror/s - Packets that failed redirection per second\n\n");
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}
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if (mask & SAMPLE_CPUMAP_ENQUEUE_CNT) {
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printf(" enqueue to cpu N\tDisplays the number of packets enqueued to bulk queue of CPU N\n"
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" \t\t\tExpands to cpu:FROM->N to display enqueue stats for each CPU enqueuing to CPU N\n"
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" \t\t\tReceived packets can be associated with the CPU redirect program is enqueuing \n"
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" \t\t\tpackets to.\n"
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" \t\t\t\tpkt/s - Packets enqueued per second from other CPU to CPU N\n"
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" \t\t\t\tdrop/s - Packets dropped when trying to enqueue to CPU N\n"
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" \t\t\t\tbulk-avg - Average number of packets processed for each event\n\n");
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}
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if (mask & SAMPLE_CPUMAP_KTHREAD_CNT) {
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printf(" kthread\t\tDisplays the number of packets processed in CPUMAP kthread for each CPU\n"
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" \t\t\tPackets consumed from ptr_ring in kthread, and its xdp_stats (after calling \n"
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" \t\t\tCPUMAP bpf prog) are expanded below this. xdp_stats are expanded as a total and\n"
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" \t\t\tthen per-CPU to associate it to each CPU's pinned CPUMAP kthread.\n"
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" \t\t\t\tpkt/s - Packets consumed per second from ptr_ring\n"
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" \t\t\t\tdrop/s - Packets dropped per second in kthread\n"
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" \t\t\t\tsched - Number of times kthread called schedule()\n\n"
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" \t\t\txdp_stats (also expands to per-CPU counts)\n"
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" \t\t\t\tpass/s - XDP_PASS count for CPUMAP program execution\n"
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" \t\t\t\tdrop/s - XDP_DROP count for CPUMAP program execution\n"
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" \t\t\t\tredir/s - XDP_REDIRECT count for CPUMAP program execution\n\n");
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}
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if (mask & SAMPLE_EXCEPTION_CNT) {
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printf(" xdp_exception\t\tDisplays xdp_exception tracepoint events\n"
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" \t\t\tThis can occur due to internal driver errors, unrecognized\n"
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" \t\t\tXDP actions and due to explicit user trigger by use of XDP_ABORTED\n"
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" \t\t\tEach action is expanded below this field with its count\n"
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" \t\t\t\thit/s - Number of times the tracepoint was hit per second\n\n");
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}
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if (mask & SAMPLE_DEVMAP_XMIT_CNT) {
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printf(" devmap_xmit\t\tDisplays devmap_xmit tracepoint events\n"
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" \t\t\tThis tracepoint is invoked for successful transmissions on output\n"
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" \t\t\tdevice but these statistics are not available for generic XDP mode,\n"
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" \t\t\thence they will be omitted from the output when using SKB mode\n"
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" \t\t\t\txmit/s - Number of packets that were transmitted per second\n"
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" \t\t\t\tdrop/s - Number of packets that failed transmissions per second\n"
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" \t\t\t\tdrv_err/s - Number of internal driver errors per second\n"
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" \t\t\t\tbulk-avg - Average number of packets processed for each event\n\n");
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}
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}
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void sample_usage(char *argv[], const struct option *long_options,
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const char *doc, int mask, bool error)
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{
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int i;
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if (!error)
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sample_print_help(mask);
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printf("\n%s\nOption for %s:\n", doc, argv[0]);
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for (i = 0; long_options[i].name != 0; i++) {
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printf(" --%-15s", long_options[i].name);
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if (long_options[i].flag != NULL)
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printf(" flag (internal value: %d)",
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*long_options[i].flag);
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else
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printf("\t short-option: -%c", long_options[i].val);
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printf("\n");
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}
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printf("\n");
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}
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static struct datarec *alloc_record_per_cpu(void)
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{
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unsigned int nr_cpus = libbpf_num_possible_cpus();
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struct datarec *array;
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array = calloc(nr_cpus, sizeof(*array));
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if (!array) {
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fprintf(stderr, "Failed to allocate memory (nr_cpus: %u)\n",
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nr_cpus);
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return NULL;
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}
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return array;
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}
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static int map_entry_init(struct map_entry *e, __u64 pair)
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{
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e->pair = pair;
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INIT_HLIST_NODE(&e->node);
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e->val.timestamp = gettime();
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e->val.cpu = alloc_record_per_cpu();
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if (!e->val.cpu)
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return -ENOMEM;
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return 0;
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}
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static void map_collect_percpu(struct datarec *values, struct record *rec)
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{
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/* For percpu maps, userspace gets a value per possible CPU */
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unsigned int nr_cpus = libbpf_num_possible_cpus();
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__u64 sum_xdp_redirect = 0;
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__u64 sum_processed = 0;
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__u64 sum_xdp_pass = 0;
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__u64 sum_xdp_drop = 0;
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__u64 sum_dropped = 0;
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__u64 sum_issue = 0;
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int i;
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/* Get time as close as possible to reading map contents */
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rec->timestamp = gettime();
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/* Record and sum values from each CPU */
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for (i = 0; i < nr_cpus; i++) {
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rec->cpu[i].processed = READ_ONCE(values[i].processed);
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rec->cpu[i].dropped = READ_ONCE(values[i].dropped);
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rec->cpu[i].issue = READ_ONCE(values[i].issue);
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rec->cpu[i].xdp_pass = READ_ONCE(values[i].xdp_pass);
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rec->cpu[i].xdp_drop = READ_ONCE(values[i].xdp_drop);
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rec->cpu[i].xdp_redirect = READ_ONCE(values[i].xdp_redirect);
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sum_processed += rec->cpu[i].processed;
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sum_dropped += rec->cpu[i].dropped;
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sum_issue += rec->cpu[i].issue;
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sum_xdp_pass += rec->cpu[i].xdp_pass;
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sum_xdp_drop += rec->cpu[i].xdp_drop;
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sum_xdp_redirect += rec->cpu[i].xdp_redirect;
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}
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rec->total.processed = sum_processed;
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rec->total.dropped = sum_dropped;
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rec->total.issue = sum_issue;
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rec->total.xdp_pass = sum_xdp_pass;
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rec->total.xdp_drop = sum_xdp_drop;
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rec->total.xdp_redirect = sum_xdp_redirect;
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}
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static int map_collect_percpu_devmap(int map_fd, struct stats_record *rec)
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{
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unsigned int nr_cpus = bpf_num_possible_cpus();
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__u32 batch, count = 32;
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struct datarec *values;
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bool init = false;
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__u64 *keys;
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int i, ret;
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keys = calloc(count, sizeof(__u64));
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if (!keys)
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return -ENOMEM;
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values = calloc(count * nr_cpus, sizeof(struct datarec));
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if (!values) {
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free(keys);
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return -ENOMEM;
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}
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for (;;) {
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bool exit = false;
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ret = bpf_map_lookup_batch(map_fd, init ? &batch : NULL, &batch,
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keys, values, &count, NULL);
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if (ret < 0 && errno != ENOENT)
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break;
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if (errno == ENOENT)
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exit = true;
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init = true;
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for (i = 0; i < count; i++) {
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struct map_entry *e, *x = NULL;
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__u64 pair = keys[i];
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struct datarec *arr;
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arr = &values[i * nr_cpus];
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hash_for_each_possible(rec->xmit_map, e, node, pair) {
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if (e->pair == pair) {
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x = e;
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break;
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}
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}
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if (!x) {
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x = calloc(1, sizeof(*x));
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if (!x)
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goto cleanup;
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if (map_entry_init(x, pair) < 0) {
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free(x);
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goto cleanup;
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}
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hash_add(rec->xmit_map, &x->node, pair);
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}
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map_collect_percpu(arr, &x->val);
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}
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if (exit)
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break;
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count = 32;
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}
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free(values);
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free(keys);
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return 0;
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cleanup:
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free(values);
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free(keys);
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return -ENOMEM;
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}
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static struct stats_record *alloc_stats_record(void)
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{
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struct stats_record *rec;
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int i;
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rec = calloc(1, sizeof(*rec) + sample_n_cpus * sizeof(struct record));
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if (!rec) {
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fprintf(stderr, "Failed to allocate memory\n");
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return NULL;
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}
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|
|
if (sample_mask & SAMPLE_RX_CNT) {
|
|
rec->rx_cnt.cpu = alloc_record_per_cpu();
|
|
if (!rec->rx_cnt.cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate rx_cnt per-CPU array\n");
|
|
goto end_rec;
|
|
}
|
|
}
|
|
if (sample_mask & (SAMPLE_REDIRECT_CNT | SAMPLE_REDIRECT_ERR_CNT)) {
|
|
for (i = 0; i < XDP_REDIRECT_ERR_MAX; i++) {
|
|
rec->redir_err[i].cpu = alloc_record_per_cpu();
|
|
if (!rec->redir_err[i].cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate redir_err per-CPU array for "
|
|
"\"%s\" case\n",
|
|
xdp_redirect_err_names[i]);
|
|
while (i--)
|
|
free(rec->redir_err[i].cpu);
|
|
goto end_rx_cnt;
|
|
}
|
|
}
|
|
}
|
|
if (sample_mask & SAMPLE_CPUMAP_KTHREAD_CNT) {
|
|
rec->kthread.cpu = alloc_record_per_cpu();
|
|
if (!rec->kthread.cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate kthread per-CPU array\n");
|
|
goto end_redir;
|
|
}
|
|
}
|
|
if (sample_mask & SAMPLE_EXCEPTION_CNT) {
|
|
for (i = 0; i < XDP_ACTION_MAX; i++) {
|
|
rec->exception[i].cpu = alloc_record_per_cpu();
|
|
if (!rec->exception[i].cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate exception per-CPU array for "
|
|
"\"%s\" case\n",
|
|
action2str(i));
|
|
while (i--)
|
|
free(rec->exception[i].cpu);
|
|
goto end_kthread;
|
|
}
|
|
}
|
|
}
|
|
if (sample_mask & SAMPLE_DEVMAP_XMIT_CNT) {
|
|
rec->devmap_xmit.cpu = alloc_record_per_cpu();
|
|
if (!rec->devmap_xmit.cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate devmap_xmit per-CPU array\n");
|
|
goto end_exception;
|
|
}
|
|
}
|
|
if (sample_mask & SAMPLE_DEVMAP_XMIT_CNT_MULTI)
|
|
hash_init(rec->xmit_map);
|
|
if (sample_mask & SAMPLE_CPUMAP_ENQUEUE_CNT) {
|
|
for (i = 0; i < sample_n_cpus; i++) {
|
|
rec->enq[i].cpu = alloc_record_per_cpu();
|
|
if (!rec->enq[i].cpu) {
|
|
fprintf(stderr,
|
|
"Failed to allocate enqueue per-CPU array for "
|
|
"CPU %d\n",
|
|
i);
|
|
while (i--)
|
|
free(rec->enq[i].cpu);
|
|
goto end_devmap_xmit;
|
|
}
|
|
}
|
|
}
|
|
|
|
return rec;
|
|
|
|
end_devmap_xmit:
|
|
free(rec->devmap_xmit.cpu);
|
|
end_exception:
|
|
for (i = 0; i < XDP_ACTION_MAX; i++)
|
|
free(rec->exception[i].cpu);
|
|
end_kthread:
|
|
free(rec->kthread.cpu);
|
|
end_redir:
|
|
for (i = 0; i < XDP_REDIRECT_ERR_MAX; i++)
|
|
free(rec->redir_err[i].cpu);
|
|
end_rx_cnt:
|
|
free(rec->rx_cnt.cpu);
|
|
end_rec:
|
|
free(rec);
|
|
return NULL;
|
|
}
|
|
|
|
static void free_stats_record(struct stats_record *r)
|
|
{
|
|
struct hlist_node *tmp;
|
|
struct map_entry *e;
|
|
int i;
|
|
|
|
for (i = 0; i < sample_n_cpus; i++)
|
|
free(r->enq[i].cpu);
|
|
hash_for_each_safe(r->xmit_map, i, tmp, e, node) {
|
|
hash_del(&e->node);
|
|
free(e->val.cpu);
|
|
free(e);
|
|
}
|
|
free(r->devmap_xmit.cpu);
|
|
for (i = 0; i < XDP_ACTION_MAX; i++)
|
|
free(r->exception[i].cpu);
|
|
free(r->kthread.cpu);
|
|
for (i = 0; i < XDP_REDIRECT_ERR_MAX; i++)
|
|
free(r->redir_err[i].cpu);
|
|
free(r->rx_cnt.cpu);
|
|
free(r);
|
|
}
|
|
|
|
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 sample_round(double val)
|
|
{
|
|
if (val - floor(val) < 0.5)
|
|
return floor(val);
|
|
return ceil(val);
|
|
}
|
|
|
|
static __u64 calc_pps(struct datarec *r, struct datarec *p, double period_)
|
|
{
|
|
__u64 packets = 0;
|
|
__u64 pps = 0;
|
|
|
|
if (period_ > 0) {
|
|
packets = r->processed - p->processed;
|
|
pps = sample_round(packets / period_);
|
|
}
|
|
return pps;
|
|
}
|
|
|
|
static __u64 calc_drop_pps(struct datarec *r, struct datarec *p, double period_)
|
|
{
|
|
__u64 packets = 0;
|
|
__u64 pps = 0;
|
|
|
|
if (period_ > 0) {
|
|
packets = r->dropped - p->dropped;
|
|
pps = sample_round(packets / period_);
|
|
}
|
|
return pps;
|
|
}
|
|
|
|
static __u64 calc_errs_pps(struct datarec *r, struct datarec *p, double period_)
|
|
{
|
|
__u64 packets = 0;
|
|
__u64 pps = 0;
|
|
|
|
if (period_ > 0) {
|
|
packets = r->issue - p->issue;
|
|
pps = sample_round(packets / period_);
|
|
}
|
|
return pps;
|
|
}
|
|
|
|
static __u64 calc_info_pps(struct datarec *r, struct datarec *p, double period_)
|
|
{
|
|
__u64 packets = 0;
|
|
__u64 pps = 0;
|
|
|
|
if (period_ > 0) {
|
|
packets = r->info - p->info;
|
|
pps = sample_round(packets / period_);
|
|
}
|
|
return pps;
|
|
}
|
|
|
|
static void calc_xdp_pps(struct datarec *r, struct datarec *p, double *xdp_pass,
|
|
double *xdp_drop, double *xdp_redirect, double period_)
|
|
{
|
|
*xdp_pass = 0, *xdp_drop = 0, *xdp_redirect = 0;
|
|
if (period_ > 0) {
|
|
*xdp_redirect = (r->xdp_redirect - p->xdp_redirect) / period_;
|
|
*xdp_pass = (r->xdp_pass - p->xdp_pass) / period_;
|
|
*xdp_drop = (r->xdp_drop - p->xdp_drop) / period_;
|
|
}
|
|
}
|
|
|
|
static void stats_get_rx_cnt(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus, struct sample_output *out)
|
|
{
|
|
struct record *rec, *prev;
|
|
double t, pps, drop, err;
|
|
int i;
|
|
|
|
rec = &stats_rec->rx_cnt;
|
|
prev = &stats_prev->rx_cnt;
|
|
t = calc_period(rec, prev);
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
|
|
pps = calc_pps(r, p, t);
|
|
drop = calc_drop_pps(r, p, t);
|
|
err = calc_errs_pps(r, p, t);
|
|
if (!pps && !drop && !err)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-18s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
"\n",
|
|
str, PPS(pps), DROP(drop), ERR(err));
|
|
}
|
|
|
|
if (out) {
|
|
pps = calc_pps(&rec->total, &prev->total, t);
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
err = calc_errs_pps(&rec->total, &prev->total, t);
|
|
|
|
out->rx_cnt.pps = pps;
|
|
out->rx_cnt.drop = drop;
|
|
out->rx_cnt.err = err;
|
|
out->totals.rx += pps;
|
|
out->totals.drop += drop;
|
|
out->totals.err += err;
|
|
}
|
|
}
|
|
|
|
static void stats_get_cpumap_enqueue(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus)
|
|
{
|
|
struct record *rec, *prev;
|
|
double t, pps, drop, err;
|
|
int i, to_cpu;
|
|
|
|
/* cpumap enqueue stats */
|
|
for (to_cpu = 0; to_cpu < sample_n_cpus; to_cpu++) {
|
|
rec = &stats_rec->enq[to_cpu];
|
|
prev = &stats_prev->enq[to_cpu];
|
|
t = calc_period(rec, prev);
|
|
|
|
pps = calc_pps(&rec->total, &prev->total, t);
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
err = calc_errs_pps(&rec->total, &prev->total, t);
|
|
|
|
if (pps > 0 || drop > 0) {
|
|
char str[64];
|
|
|
|
snprintf(str, sizeof(str), "enqueue to cpu %d", to_cpu);
|
|
|
|
if (err > 0)
|
|
err = pps / err; /* calc average bulk size */
|
|
|
|
print_err(drop,
|
|
" %-20s " FMT_COLUMNf FMT_COLUMNf __COLUMN(
|
|
".2f") "\n",
|
|
str, PPS(pps), DROP(drop), err, "bulk-avg");
|
|
}
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
|
|
pps = calc_pps(r, p, t);
|
|
drop = calc_drop_pps(r, p, t);
|
|
err = calc_errs_pps(r, p, t);
|
|
if (!pps && !drop && !err)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d->%d", i, to_cpu);
|
|
if (err > 0)
|
|
err = pps / err; /* calc average bulk size */
|
|
print_default(
|
|
" %-18s " FMT_COLUMNf FMT_COLUMNf __COLUMN(
|
|
".2f") "\n",
|
|
str, PPS(pps), DROP(drop), err, "bulk-avg");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void stats_get_cpumap_remote(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus)
|
|
{
|
|
double xdp_pass, xdp_drop, xdp_redirect;
|
|
struct record *rec, *prev;
|
|
double t;
|
|
int i;
|
|
|
|
rec = &stats_rec->kthread;
|
|
prev = &stats_prev->kthread;
|
|
t = calc_period(rec, prev);
|
|
|
|
calc_xdp_pps(&rec->total, &prev->total, &xdp_pass, &xdp_drop,
|
|
&xdp_redirect, t);
|
|
if (xdp_pass || xdp_drop || xdp_redirect) {
|
|
print_err(xdp_drop,
|
|
" %-18s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf "\n",
|
|
"xdp_stats", PASS(xdp_pass), DROP(xdp_drop),
|
|
REDIR(xdp_redirect));
|
|
}
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
|
|
calc_xdp_pps(r, p, &xdp_pass, &xdp_drop, &xdp_redirect, t);
|
|
if (!xdp_pass && !xdp_drop && !xdp_redirect)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-16s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
"\n",
|
|
str, PASS(xdp_pass), DROP(xdp_drop),
|
|
REDIR(xdp_redirect));
|
|
}
|
|
}
|
|
|
|
static void stats_get_cpumap_kthread(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus)
|
|
{
|
|
struct record *rec, *prev;
|
|
double t, pps, drop, err;
|
|
int i;
|
|
|
|
rec = &stats_rec->kthread;
|
|
prev = &stats_prev->kthread;
|
|
t = calc_period(rec, prev);
|
|
|
|
pps = calc_pps(&rec->total, &prev->total, t);
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
err = calc_errs_pps(&rec->total, &prev->total, t);
|
|
|
|
print_err(drop, " %-20s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf "\n",
|
|
pps ? "kthread total" : "kthread", PPS(pps), DROP(drop), err,
|
|
"sched");
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
|
|
pps = calc_pps(r, p, t);
|
|
drop = calc_drop_pps(r, p, t);
|
|
err = calc_errs_pps(r, p, t);
|
|
if (!pps && !drop && !err)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-18s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
"\n",
|
|
str, PPS(pps), DROP(drop), err, "sched");
|
|
}
|
|
}
|
|
|
|
static void stats_get_redirect_cnt(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus,
|
|
struct sample_output *out)
|
|
{
|
|
struct record *rec, *prev;
|
|
double t, pps;
|
|
int i;
|
|
|
|
rec = &stats_rec->redir_err[0];
|
|
prev = &stats_prev->redir_err[0];
|
|
t = calc_period(rec, prev);
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
|
|
pps = calc_pps(r, p, t);
|
|
if (!pps)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-18s " FMT_COLUMNf "\n", str, REDIR(pps));
|
|
}
|
|
|
|
if (out) {
|
|
pps = calc_pps(&rec->total, &prev->total, t);
|
|
out->redir_cnt.suc = pps;
|
|
out->totals.redir += pps;
|
|
}
|
|
}
|
|
|
|
static void stats_get_redirect_err_cnt(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus,
|
|
struct sample_output *out)
|
|
{
|
|
struct record *rec, *prev;
|
|
double t, drop, sum = 0;
|
|
int rec_i, i;
|
|
|
|
for (rec_i = 1; rec_i < XDP_REDIRECT_ERR_MAX; rec_i++) {
|
|
char str[64];
|
|
|
|
rec = &stats_rec->redir_err[rec_i];
|
|
prev = &stats_prev->redir_err[rec_i];
|
|
t = calc_period(rec, prev);
|
|
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
if (drop > 0 && !out) {
|
|
snprintf(str, sizeof(str),
|
|
sample_log_level & LL_DEFAULT ? "%s total" :
|
|
"%s",
|
|
xdp_redirect_err_names[rec_i]);
|
|
print_err(drop, " %-18s " FMT_COLUMNf "\n", str,
|
|
ERR(drop));
|
|
}
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
double drop;
|
|
|
|
drop = calc_drop_pps(r, p, t);
|
|
if (!drop)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-16s" FMT_COLUMNf "\n", str,
|
|
ERR(drop));
|
|
}
|
|
|
|
sum += drop;
|
|
}
|
|
|
|
if (out) {
|
|
out->redir_cnt.err = sum;
|
|
out->totals.err += sum;
|
|
}
|
|
}
|
|
|
|
static void stats_get_exception_cnt(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus,
|
|
struct sample_output *out)
|
|
{
|
|
double t, drop, sum = 0;
|
|
struct record *rec, *prev;
|
|
int rec_i, i;
|
|
|
|
for (rec_i = 0; rec_i < XDP_ACTION_MAX; rec_i++) {
|
|
rec = &stats_rec->exception[rec_i];
|
|
prev = &stats_prev->exception[rec_i];
|
|
t = calc_period(rec, prev);
|
|
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
/* Fold out errors after heading */
|
|
sum += drop;
|
|
|
|
if (drop > 0 && !out) {
|
|
print_always(" %-18s " FMT_COLUMNf "\n",
|
|
action2str(rec_i), ERR(drop));
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *r = &rec->cpu[i];
|
|
struct datarec *p = &prev->cpu[i];
|
|
char str[64];
|
|
double drop;
|
|
|
|
drop = calc_drop_pps(r, p, t);
|
|
if (!drop)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
print_default(" %-16s" FMT_COLUMNf "\n",
|
|
str, ERR(drop));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (out) {
|
|
out->except_cnt.hits = sum;
|
|
out->totals.err += sum;
|
|
}
|
|
}
|
|
|
|
static void stats_get_devmap_xmit(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus,
|
|
struct sample_output *out)
|
|
{
|
|
double pps, drop, info, err;
|
|
struct record *rec, *prev;
|
|
double t;
|
|
int i;
|
|
|
|
rec = &stats_rec->devmap_xmit;
|
|
prev = &stats_prev->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];
|
|
char str[64];
|
|
|
|
pps = calc_pps(r, p, t);
|
|
drop = calc_drop_pps(r, p, t);
|
|
err = calc_errs_pps(r, p, t);
|
|
|
|
if (!pps && !drop && !err)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
info = calc_info_pps(r, p, t);
|
|
if (info > 0)
|
|
info = (pps + drop) / info; /* calc avg bulk */
|
|
print_default(" %-18s" FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
__COLUMN(".2f") "\n",
|
|
str, XMIT(pps), DROP(drop), err, "drv_err/s",
|
|
info, "bulk-avg");
|
|
}
|
|
if (out) {
|
|
pps = calc_pps(&rec->total, &prev->total, t);
|
|
drop = calc_drop_pps(&rec->total, &prev->total, t);
|
|
info = calc_info_pps(&rec->total, &prev->total, t);
|
|
if (info > 0)
|
|
info = (pps + drop) / info; /* calc avg bulk */
|
|
err = calc_errs_pps(&rec->total, &prev->total, t);
|
|
|
|
out->xmit_cnt.pps = pps;
|
|
out->xmit_cnt.drop = drop;
|
|
out->xmit_cnt.bavg = info;
|
|
out->xmit_cnt.err = err;
|
|
out->totals.xmit += pps;
|
|
out->totals.drop_xmit += drop;
|
|
out->totals.err += err;
|
|
}
|
|
}
|
|
|
|
static void stats_get_devmap_xmit_multi(struct stats_record *stats_rec,
|
|
struct stats_record *stats_prev,
|
|
unsigned int nr_cpus,
|
|
struct sample_output *out,
|
|
bool xmit_total)
|
|
{
|
|
double pps, drop, info, err;
|
|
struct map_entry *entry;
|
|
struct record *r, *p;
|
|
double t;
|
|
int bkt;
|
|
|
|
hash_for_each(stats_rec->xmit_map, bkt, entry, node) {
|
|
struct map_entry *e, *x = NULL;
|
|
char ifname_from[IFNAMSIZ];
|
|
char ifname_to[IFNAMSIZ];
|
|
const char *fstr, *tstr;
|
|
unsigned long prev_time;
|
|
struct record beg = {};
|
|
__u32 from_idx, to_idx;
|
|
char str[128];
|
|
__u64 pair;
|
|
int i;
|
|
|
|
prev_time = sample_interval * NANOSEC_PER_SEC;
|
|
|
|
pair = entry->pair;
|
|
from_idx = pair >> 32;
|
|
to_idx = pair & 0xFFFFFFFF;
|
|
|
|
r = &entry->val;
|
|
beg.timestamp = r->timestamp - prev_time;
|
|
|
|
/* Find matching entry from stats_prev map */
|
|
hash_for_each_possible(stats_prev->xmit_map, e, node, pair) {
|
|
if (e->pair == pair) {
|
|
x = e;
|
|
break;
|
|
}
|
|
}
|
|
if (x)
|
|
p = &x->val;
|
|
else
|
|
p = &beg;
|
|
t = calc_period(r, p);
|
|
pps = calc_pps(&r->total, &p->total, t);
|
|
drop = calc_drop_pps(&r->total, &p->total, t);
|
|
info = calc_info_pps(&r->total, &p->total, t);
|
|
if (info > 0)
|
|
info = (pps + drop) / info; /* calc avg bulk */
|
|
err = calc_errs_pps(&r->total, &p->total, t);
|
|
|
|
if (out) {
|
|
/* We are responsible for filling out totals */
|
|
out->totals.xmit += pps;
|
|
out->totals.drop_xmit += drop;
|
|
out->totals.err += err;
|
|
continue;
|
|
}
|
|
|
|
fstr = tstr = NULL;
|
|
if (if_indextoname(from_idx, ifname_from))
|
|
fstr = ifname_from;
|
|
if (if_indextoname(to_idx, ifname_to))
|
|
tstr = ifname_to;
|
|
|
|
snprintf(str, sizeof(str), "xmit %s->%s", fstr ?: "?",
|
|
tstr ?: "?");
|
|
/* Skip idle streams of redirection */
|
|
if (pps || drop || err) {
|
|
print_err(drop,
|
|
" %-20s " FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
__COLUMN(".2f") "\n", str, XMIT(pps), DROP(drop),
|
|
err, "drv_err/s", info, "bulk-avg");
|
|
}
|
|
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
struct datarec *rc = &r->cpu[i];
|
|
struct datarec *pc, p_beg = {};
|
|
char str[64];
|
|
|
|
pc = p == &beg ? &p_beg : &p->cpu[i];
|
|
|
|
pps = calc_pps(rc, pc, t);
|
|
drop = calc_drop_pps(rc, pc, t);
|
|
err = calc_errs_pps(rc, pc, t);
|
|
|
|
if (!pps && !drop && !err)
|
|
continue;
|
|
|
|
snprintf(str, sizeof(str), "cpu:%d", i);
|
|
info = calc_info_pps(rc, pc, t);
|
|
if (info > 0)
|
|
info = (pps + drop) / info; /* calc avg bulk */
|
|
|
|
print_default(" %-18s" FMT_COLUMNf FMT_COLUMNf FMT_COLUMNf
|
|
__COLUMN(".2f") "\n", str, XMIT(pps),
|
|
DROP(drop), err, "drv_err/s", info, "bulk-avg");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void stats_print(const char *prefix, int mask, struct stats_record *r,
|
|
struct stats_record *p, struct sample_output *out)
|
|
{
|
|
int nr_cpus = libbpf_num_possible_cpus();
|
|
const char *str;
|
|
|
|
print_always("%-23s", prefix ?: "Summary");
|
|
if (mask & SAMPLE_RX_CNT)
|
|
print_always(FMT_COLUMNl, RX(out->totals.rx));
|
|
if (mask & SAMPLE_REDIRECT_CNT)
|
|
print_always(FMT_COLUMNl, REDIR(out->totals.redir));
|
|
printf(FMT_COLUMNl,
|
|
out->totals.err + out->totals.drop + out->totals.drop_xmit,
|
|
"err,drop/s");
|
|
if (mask & SAMPLE_DEVMAP_XMIT_CNT ||
|
|
mask & SAMPLE_DEVMAP_XMIT_CNT_MULTI)
|
|
printf(FMT_COLUMNl, XMIT(out->totals.xmit));
|
|
printf("\n");
|
|
|
|
if (mask & SAMPLE_RX_CNT) {
|
|
str = (sample_log_level & LL_DEFAULT) && out->rx_cnt.pps ?
|
|
"receive total" :
|
|
"receive";
|
|
print_err((out->rx_cnt.err || out->rx_cnt.drop),
|
|
" %-20s " FMT_COLUMNl FMT_COLUMNl FMT_COLUMNl "\n",
|
|
str, PPS(out->rx_cnt.pps), DROP(out->rx_cnt.drop),
|
|
ERR(out->rx_cnt.err));
|
|
|
|
stats_get_rx_cnt(r, p, nr_cpus, NULL);
|
|
}
|
|
|
|
if (mask & SAMPLE_CPUMAP_ENQUEUE_CNT)
|
|
stats_get_cpumap_enqueue(r, p, nr_cpus);
|
|
|
|
if (mask & SAMPLE_CPUMAP_KTHREAD_CNT) {
|
|
stats_get_cpumap_kthread(r, p, nr_cpus);
|
|
stats_get_cpumap_remote(r, p, nr_cpus);
|
|
}
|
|
|
|
if (mask & SAMPLE_REDIRECT_CNT) {
|
|
str = out->redir_cnt.suc ? "redirect total" : "redirect";
|
|
print_default(" %-20s " FMT_COLUMNl "\n", str,
|
|
REDIR(out->redir_cnt.suc));
|
|
|
|
stats_get_redirect_cnt(r, p, nr_cpus, NULL);
|
|
}
|
|
|
|
if (mask & SAMPLE_REDIRECT_ERR_CNT) {
|
|
str = (sample_log_level & LL_DEFAULT) && out->redir_cnt.err ?
|
|
"redirect_err total" :
|
|
"redirect_err";
|
|
print_err(out->redir_cnt.err, " %-20s " FMT_COLUMNl "\n", str,
|
|
ERR(out->redir_cnt.err));
|
|
|
|
stats_get_redirect_err_cnt(r, p, nr_cpus, NULL);
|
|
}
|
|
|
|
if (mask & SAMPLE_EXCEPTION_CNT) {
|
|
str = out->except_cnt.hits ? "xdp_exception total" :
|
|
"xdp_exception";
|
|
|
|
print_err(out->except_cnt.hits, " %-20s " FMT_COLUMNl "\n", str,
|
|
HITS(out->except_cnt.hits));
|
|
|
|
stats_get_exception_cnt(r, p, nr_cpus, NULL);
|
|
}
|
|
|
|
if (mask & SAMPLE_DEVMAP_XMIT_CNT) {
|
|
str = (sample_log_level & LL_DEFAULT) && out->xmit_cnt.pps ?
|
|
"devmap_xmit total" :
|
|
"devmap_xmit";
|
|
|
|
print_err(out->xmit_cnt.err || out->xmit_cnt.drop,
|
|
" %-20s " FMT_COLUMNl FMT_COLUMNl FMT_COLUMNl
|
|
__COLUMN(".2f") "\n",
|
|
str, XMIT(out->xmit_cnt.pps),
|
|
DROP(out->xmit_cnt.drop), out->xmit_cnt.err,
|
|
"drv_err/s", out->xmit_cnt.bavg, "bulk-avg");
|
|
|
|
stats_get_devmap_xmit(r, p, nr_cpus, NULL);
|
|
}
|
|
|
|
if (mask & SAMPLE_DEVMAP_XMIT_CNT_MULTI)
|
|
stats_get_devmap_xmit_multi(r, p, nr_cpus, NULL,
|
|
mask & SAMPLE_DEVMAP_XMIT_CNT);
|
|
|
|
if (sample_log_level & LL_DEFAULT ||
|
|
((sample_log_level & LL_SIMPLE) && sample_err_exp)) {
|
|
sample_err_exp = false;
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
int sample_setup_maps(struct bpf_map **maps)
|
|
{
|
|
sample_n_cpus = libbpf_num_possible_cpus();
|
|
|
|
for (int i = 0; i < MAP_DEVMAP_XMIT_MULTI; i++) {
|
|
sample_map[i] = maps[i];
|
|
|
|
switch (i) {
|
|
case MAP_RX:
|
|
case MAP_CPUMAP_KTHREAD:
|
|
case MAP_DEVMAP_XMIT:
|
|
sample_map_count[i] = sample_n_cpus;
|
|
break;
|
|
case MAP_REDIRECT_ERR:
|
|
sample_map_count[i] =
|
|
XDP_REDIRECT_ERR_MAX * sample_n_cpus;
|
|
break;
|
|
case MAP_EXCEPTION:
|
|
sample_map_count[i] = XDP_ACTION_MAX * sample_n_cpus;
|
|
case MAP_CPUMAP_ENQUEUE:
|
|
sample_map_count[i] = sample_n_cpus * sample_n_cpus;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
if (bpf_map__set_max_entries(sample_map[i], sample_map_count[i]) < 0)
|
|
return -errno;
|
|
}
|
|
sample_map[MAP_DEVMAP_XMIT_MULTI] = maps[MAP_DEVMAP_XMIT_MULTI];
|
|
return 0;
|
|
}
|
|
|
|
static int sample_setup_maps_mappings(void)
|
|
{
|
|
for (int i = 0; i < MAP_DEVMAP_XMIT_MULTI; i++) {
|
|
size_t size = sample_map_count[i] * sizeof(struct datarec);
|
|
|
|
sample_mmap[i] = mmap(NULL, size, PROT_READ | PROT_WRITE,
|
|
MAP_SHARED, bpf_map__fd(sample_map[i]), 0);
|
|
if (sample_mmap[i] == MAP_FAILED)
|
|
return -errno;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int __sample_init(int mask)
|
|
{
|
|
sigset_t st;
|
|
|
|
sigemptyset(&st);
|
|
sigaddset(&st, SIGQUIT);
|
|
sigaddset(&st, SIGINT);
|
|
sigaddset(&st, SIGTERM);
|
|
|
|
if (sigprocmask(SIG_BLOCK, &st, NULL) < 0)
|
|
return -errno;
|
|
|
|
sample_sig_fd = signalfd(-1, &st, SFD_CLOEXEC | SFD_NONBLOCK);
|
|
if (sample_sig_fd < 0)
|
|
return -errno;
|
|
|
|
sample_mask = mask;
|
|
|
|
return sample_setup_maps_mappings();
|
|
}
|
|
|
|
static int __sample_remove_xdp(int ifindex, __u32 prog_id, int xdp_flags)
|
|
{
|
|
__u32 cur_prog_id = 0;
|
|
int ret;
|
|
|
|
if (prog_id) {
|
|
ret = bpf_xdp_query_id(ifindex, xdp_flags, &cur_prog_id);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
if (prog_id != cur_prog_id) {
|
|
print_always(
|
|
"Program on ifindex %d does not match installed "
|
|
"program, skipping unload\n",
|
|
ifindex);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
|
|
return bpf_xdp_detach(ifindex, xdp_flags, NULL);
|
|
}
|
|
|
|
int sample_install_xdp(struct bpf_program *xdp_prog, int ifindex, bool generic,
|
|
bool force)
|
|
{
|
|
int ret, xdp_flags = 0;
|
|
__u32 prog_id = 0;
|
|
|
|
if (sample_xdp_cnt == 32) {
|
|
fprintf(stderr,
|
|
"Total limit for installed XDP programs in a sample reached\n");
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
xdp_flags |= !force ? XDP_FLAGS_UPDATE_IF_NOEXIST : 0;
|
|
xdp_flags |= generic ? XDP_FLAGS_SKB_MODE : XDP_FLAGS_DRV_MODE;
|
|
ret = bpf_xdp_attach(ifindex, bpf_program__fd(xdp_prog), xdp_flags, NULL);
|
|
if (ret < 0) {
|
|
ret = -errno;
|
|
fprintf(stderr,
|
|
"Failed to install program \"%s\" on ifindex %d, mode = %s, "
|
|
"force = %s: %s\n",
|
|
bpf_program__name(xdp_prog), ifindex,
|
|
generic ? "skb" : "native", force ? "true" : "false",
|
|
strerror(-ret));
|
|
return ret;
|
|
}
|
|
|
|
ret = bpf_xdp_query_id(ifindex, xdp_flags, &prog_id);
|
|
if (ret < 0) {
|
|
ret = -errno;
|
|
fprintf(stderr,
|
|
"Failed to get XDP program id for ifindex %d, removing program: %s\n",
|
|
ifindex, strerror(errno));
|
|
__sample_remove_xdp(ifindex, 0, xdp_flags);
|
|
return ret;
|
|
}
|
|
sample_xdp_progs[sample_xdp_cnt++] =
|
|
(struct xdp_desc){ ifindex, prog_id, xdp_flags };
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sample_summary_print(void)
|
|
{
|
|
double num = sample_out.rx_cnt.num;
|
|
|
|
if (sample_out.totals.rx) {
|
|
double pkts = sample_out.totals.rx;
|
|
|
|
print_always(" Packets received : %'-10llu\n",
|
|
sample_out.totals.rx);
|
|
print_always(" Average packets/s : %'-10.0f\n",
|
|
sample_round(pkts / num));
|
|
}
|
|
if (sample_out.totals.redir) {
|
|
double pkts = sample_out.totals.redir;
|
|
|
|
print_always(" Packets redirected : %'-10llu\n",
|
|
sample_out.totals.redir);
|
|
print_always(" Average redir/s : %'-10.0f\n",
|
|
sample_round(pkts / num));
|
|
}
|
|
if (sample_out.totals.drop)
|
|
print_always(" Rx dropped : %'-10llu\n",
|
|
sample_out.totals.drop);
|
|
if (sample_out.totals.drop_xmit)
|
|
print_always(" Tx dropped : %'-10llu\n",
|
|
sample_out.totals.drop_xmit);
|
|
if (sample_out.totals.err)
|
|
print_always(" Errors recorded : %'-10llu\n",
|
|
sample_out.totals.err);
|
|
if (sample_out.totals.xmit) {
|
|
double pkts = sample_out.totals.xmit;
|
|
|
|
print_always(" Packets transmitted : %'-10llu\n",
|
|
sample_out.totals.xmit);
|
|
print_always(" Average transmit/s : %'-10.0f\n",
|
|
sample_round(pkts / num));
|
|
}
|
|
}
|
|
|
|
void sample_exit(int status)
|
|
{
|
|
size_t size;
|
|
|
|
for (int i = 0; i < NUM_MAP; i++) {
|
|
size = sample_map_count[i] * sizeof(**sample_mmap);
|
|
munmap(sample_mmap[i], size);
|
|
}
|
|
while (sample_xdp_cnt--) {
|
|
int i = sample_xdp_cnt, ifindex, xdp_flags;
|
|
__u32 prog_id;
|
|
|
|
prog_id = sample_xdp_progs[i].prog_id;
|
|
ifindex = sample_xdp_progs[i].ifindex;
|
|
xdp_flags = sample_xdp_progs[i].flags;
|
|
|
|
__sample_remove_xdp(ifindex, prog_id, xdp_flags);
|
|
}
|
|
sample_summary_print();
|
|
close(sample_sig_fd);
|
|
exit(status);
|
|
}
|
|
|
|
static int sample_stats_collect(struct stats_record *rec)
|
|
{
|
|
int i;
|
|
|
|
if (sample_mask & SAMPLE_RX_CNT)
|
|
map_collect_percpu(sample_mmap[MAP_RX], &rec->rx_cnt);
|
|
|
|
if (sample_mask & SAMPLE_REDIRECT_CNT)
|
|
map_collect_percpu(sample_mmap[MAP_REDIRECT_ERR], &rec->redir_err[0]);
|
|
|
|
if (sample_mask & SAMPLE_REDIRECT_ERR_CNT) {
|
|
for (i = 1; i < XDP_REDIRECT_ERR_MAX; i++)
|
|
map_collect_percpu(&sample_mmap[MAP_REDIRECT_ERR][i * sample_n_cpus],
|
|
&rec->redir_err[i]);
|
|
}
|
|
|
|
if (sample_mask & SAMPLE_CPUMAP_ENQUEUE_CNT)
|
|
for (i = 0; i < sample_n_cpus; i++)
|
|
map_collect_percpu(&sample_mmap[MAP_CPUMAP_ENQUEUE][i * sample_n_cpus],
|
|
&rec->enq[i]);
|
|
|
|
if (sample_mask & SAMPLE_CPUMAP_KTHREAD_CNT)
|
|
map_collect_percpu(sample_mmap[MAP_CPUMAP_KTHREAD],
|
|
&rec->kthread);
|
|
|
|
if (sample_mask & SAMPLE_EXCEPTION_CNT)
|
|
for (i = 0; i < XDP_ACTION_MAX; i++)
|
|
map_collect_percpu(&sample_mmap[MAP_EXCEPTION][i * sample_n_cpus],
|
|
&rec->exception[i]);
|
|
|
|
if (sample_mask & SAMPLE_DEVMAP_XMIT_CNT)
|
|
map_collect_percpu(sample_mmap[MAP_DEVMAP_XMIT], &rec->devmap_xmit);
|
|
|
|
if (sample_mask & SAMPLE_DEVMAP_XMIT_CNT_MULTI) {
|
|
if (map_collect_percpu_devmap(bpf_map__fd(sample_map[MAP_DEVMAP_XMIT_MULTI]), rec) < 0)
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void sample_summary_update(struct sample_output *out)
|
|
{
|
|
sample_out.totals.rx += out->totals.rx;
|
|
sample_out.totals.redir += out->totals.redir;
|
|
sample_out.totals.drop += out->totals.drop;
|
|
sample_out.totals.drop_xmit += out->totals.drop_xmit;
|
|
sample_out.totals.err += out->totals.err;
|
|
sample_out.totals.xmit += out->totals.xmit;
|
|
sample_out.rx_cnt.num++;
|
|
}
|
|
|
|
static void sample_stats_print(int mask, struct stats_record *cur,
|
|
struct stats_record *prev, char *prog_name)
|
|
{
|
|
struct sample_output out = {};
|
|
|
|
if (mask & SAMPLE_RX_CNT)
|
|
stats_get_rx_cnt(cur, prev, 0, &out);
|
|
if (mask & SAMPLE_REDIRECT_CNT)
|
|
stats_get_redirect_cnt(cur, prev, 0, &out);
|
|
if (mask & SAMPLE_REDIRECT_ERR_CNT)
|
|
stats_get_redirect_err_cnt(cur, prev, 0, &out);
|
|
if (mask & SAMPLE_EXCEPTION_CNT)
|
|
stats_get_exception_cnt(cur, prev, 0, &out);
|
|
if (mask & SAMPLE_DEVMAP_XMIT_CNT)
|
|
stats_get_devmap_xmit(cur, prev, 0, &out);
|
|
else if (mask & SAMPLE_DEVMAP_XMIT_CNT_MULTI)
|
|
stats_get_devmap_xmit_multi(cur, prev, 0, &out,
|
|
mask & SAMPLE_DEVMAP_XMIT_CNT);
|
|
sample_summary_update(&out);
|
|
|
|
stats_print(prog_name, mask, cur, prev, &out);
|
|
}
|
|
|
|
void sample_switch_mode(void)
|
|
{
|
|
sample_log_level ^= LL_DEBUG - 1;
|
|
}
|
|
|
|
static int sample_signal_cb(void)
|
|
{
|
|
struct signalfd_siginfo si;
|
|
int r;
|
|
|
|
r = read(sample_sig_fd, &si, sizeof(si));
|
|
if (r < 0)
|
|
return -errno;
|
|
|
|
switch (si.ssi_signo) {
|
|
case SIGQUIT:
|
|
sample_switch_mode();
|
|
printf("\n");
|
|
break;
|
|
default:
|
|
printf("\n");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Pointer swap trick */
|
|
static void swap(struct stats_record **a, struct stats_record **b)
|
|
{
|
|
struct stats_record *tmp;
|
|
|
|
tmp = *a;
|
|
*a = *b;
|
|
*b = tmp;
|
|
}
|
|
|
|
static int sample_timer_cb(int timerfd, struct stats_record **rec,
|
|
struct stats_record **prev)
|
|
{
|
|
char line[64] = "Summary";
|
|
int ret;
|
|
__u64 t;
|
|
|
|
ret = read(timerfd, &t, sizeof(t));
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
swap(prev, rec);
|
|
ret = sample_stats_collect(*rec);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (sample_xdp_cnt == 2 && !(sample_mask & SAMPLE_SKIP_HEADING)) {
|
|
char fi[IFNAMSIZ];
|
|
char to[IFNAMSIZ];
|
|
const char *f, *t;
|
|
|
|
f = t = NULL;
|
|
if (if_indextoname(sample_xdp_progs[0].ifindex, fi))
|
|
f = fi;
|
|
if (if_indextoname(sample_xdp_progs[1].ifindex, to))
|
|
t = to;
|
|
|
|
snprintf(line, sizeof(line), "%s->%s", f ?: "?", t ?: "?");
|
|
}
|
|
|
|
sample_stats_print(sample_mask, *rec, *prev, line);
|
|
return 0;
|
|
}
|
|
|
|
int sample_run(int interval, void (*post_cb)(void *), void *ctx)
|
|
{
|
|
struct timespec ts = { interval, 0 };
|
|
struct itimerspec its = { ts, ts };
|
|
struct stats_record *rec, *prev;
|
|
struct pollfd pfd[2] = {};
|
|
int timerfd, ret;
|
|
|
|
if (!interval) {
|
|
fprintf(stderr, "Incorrect interval 0\n");
|
|
return -EINVAL;
|
|
}
|
|
sample_interval = interval;
|
|
/* Pretty print numbers */
|
|
setlocale(LC_NUMERIC, "en_US.UTF-8");
|
|
|
|
timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
|
|
if (timerfd < 0)
|
|
return -errno;
|
|
timerfd_settime(timerfd, 0, &its, NULL);
|
|
|
|
pfd[0].fd = sample_sig_fd;
|
|
pfd[0].events = POLLIN;
|
|
|
|
pfd[1].fd = timerfd;
|
|
pfd[1].events = POLLIN;
|
|
|
|
ret = -ENOMEM;
|
|
rec = alloc_stats_record();
|
|
if (!rec)
|
|
goto end;
|
|
prev = alloc_stats_record();
|
|
if (!prev)
|
|
goto end_rec;
|
|
|
|
ret = sample_stats_collect(rec);
|
|
if (ret < 0)
|
|
goto end_rec_prev;
|
|
|
|
for (;;) {
|
|
ret = poll(pfd, 2, -1);
|
|
if (ret < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (pfd[0].revents & POLLIN)
|
|
ret = sample_signal_cb();
|
|
else if (pfd[1].revents & POLLIN)
|
|
ret = sample_timer_cb(timerfd, &rec, &prev);
|
|
|
|
if (ret)
|
|
break;
|
|
|
|
if (post_cb)
|
|
post_cb(ctx);
|
|
}
|
|
|
|
end_rec_prev:
|
|
free_stats_record(prev);
|
|
end_rec:
|
|
free_stats_record(rec);
|
|
end:
|
|
close(timerfd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const char *get_driver_name(int ifindex)
|
|
{
|
|
struct ethtool_drvinfo drv = {};
|
|
char ifname[IF_NAMESIZE];
|
|
static char drvname[32];
|
|
struct ifreq ifr = {};
|
|
int fd, r = 0;
|
|
|
|
fd = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (fd < 0)
|
|
return "[error]";
|
|
|
|
if (!if_indextoname(ifindex, ifname))
|
|
goto end;
|
|
|
|
drv.cmd = ETHTOOL_GDRVINFO;
|
|
safe_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
|
|
ifr.ifr_data = (void *)&drv;
|
|
|
|
r = ioctl(fd, SIOCETHTOOL, &ifr);
|
|
if (r)
|
|
goto end;
|
|
|
|
safe_strncpy(drvname, drv.driver, sizeof(drvname));
|
|
|
|
close(fd);
|
|
return drvname;
|
|
|
|
end:
|
|
r = errno;
|
|
close(fd);
|
|
return r == EOPNOTSUPP ? "loopback" : "[error]";
|
|
}
|
|
|
|
int get_mac_addr(int ifindex, void *mac_addr)
|
|
{
|
|
char ifname[IF_NAMESIZE];
|
|
struct ifreq ifr = {};
|
|
int fd, r;
|
|
|
|
fd = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (fd < 0)
|
|
return -errno;
|
|
|
|
if (!if_indextoname(ifindex, ifname)) {
|
|
r = -errno;
|
|
goto end;
|
|
}
|
|
|
|
safe_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
|
|
|
|
r = ioctl(fd, SIOCGIFHWADDR, &ifr);
|
|
if (r) {
|
|
r = -errno;
|
|
goto end;
|
|
}
|
|
|
|
memcpy(mac_addr, ifr.ifr_hwaddr.sa_data, 6 * sizeof(char));
|
|
|
|
end:
|
|
close(fd);
|
|
return r;
|
|
}
|
|
|
|
__attribute__((constructor)) static void sample_ctor(void)
|
|
{
|
|
if (libbpf_set_strict_mode(LIBBPF_STRICT_ALL) < 0) {
|
|
fprintf(stderr, "Failed to set libbpf strict mode: %s\n",
|
|
strerror(errno));
|
|
/* Just exit, nothing to cleanup right now */
|
|
exit(EXIT_FAIL_BPF);
|
|
}
|
|
}
|