/*
 * Copyright (c) 2006 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
#include <linux/percpu.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>

#include "rds.h"
#include "tcp.h"

DEFINE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats)
	____cacheline_aligned;

static const char * const rds_tcp_stat_names[] = {
	"tcp_data_ready_calls",
	"tcp_write_space_calls",
	"tcp_sndbuf_full",
	"tcp_connect_raced",
	"tcp_listen_closed_stale",
};

unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
				     unsigned int avail)
{
	struct rds_tcp_statistics stats = {0, };
	uint64_t *src;
	uint64_t *sum;
	size_t i;
	int cpu;

	if (avail < ARRAY_SIZE(rds_tcp_stat_names))
		goto out;

	for_each_online_cpu(cpu) {
		src = (uint64_t *)&(per_cpu(rds_tcp_stats, cpu));
		sum = (uint64_t *)&stats;
		for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++)
			*(sum++) += *(src++);
	}

	rds_stats_info_copy(iter, (uint64_t *)&stats, rds_tcp_stat_names,
			    ARRAY_SIZE(rds_tcp_stat_names));
out:
	return ARRAY_SIZE(rds_tcp_stat_names);
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=5f4492493e75dafc5cbb96eabe0f146c2ffb1e3d'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=5f4492493e75dafc5cbb96eabe0f146c2ffb1e3d'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/l2tp?id=5f4492493e75dafc5cbb96eabe0f146c2ffb1e3d'>l2tp</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/l2tp?id=5f4492493e75dafc5cbb96eabe0f146c2ffb1e3d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-07 13:07:47 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net/l2tp?id=0dec879f636f11b0ffda1cb5fd96a1754c59ead3'>net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP</a></td><td>Julian Anastasov</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
 (<a href='/cgit.cgi/linux/net-next.git/log/include/scsi/sas_ata.h?h=nds-private-remove&amp;id=e158e5ef24d191462428ff1be6b5048c0168fd14&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>