static void stats_print()

in bpf/xdp_sample_user.c [1103:1194]

• 75 lines of code
• 26 McCabe index (conditional complexity)

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");
	}
}