mirror of
https://github.com/torvalds/linux.git
synced 2024-11-13 07:31:45 +00:00
f0dd7bf5e3
Add support to collect more detailed SMC fallback reason statistics and provide these statistics to user space on the netlink interface. Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Shared Memory Communications over RDMA (SMC-R) and RoCE
|
|
*
|
|
* Generic netlink support functions to interact with SMC module
|
|
*
|
|
* Copyright IBM Corp. 2020
|
|
*
|
|
* Author(s): Guvenc Gulce <guvenc@linux.ibm.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/list.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/if.h>
|
|
#include <linux/smc.h>
|
|
|
|
#include "smc_core.h"
|
|
#include "smc_ism.h"
|
|
#include "smc_ib.h"
|
|
#include "smc_stats.h"
|
|
#include "smc_netlink.h"
|
|
|
|
#define SMC_CMD_MAX_ATTR 1
|
|
|
|
/* SMC_GENL generic netlink operation definition */
|
|
static const struct genl_ops smc_gen_nl_ops[] = {
|
|
{
|
|
.cmd = SMC_NETLINK_GET_SYS_INFO,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smc_nl_get_sys_info,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_LGR_SMCR,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smcr_nl_get_lgr,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_LINK_SMCR,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smcr_nl_get_link,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_LGR_SMCD,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smcd_nl_get_lgr,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_DEV_SMCD,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smcd_nl_get_device,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_DEV_SMCR,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smcr_nl_get_device,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_STATS,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smc_nl_get_stats,
|
|
},
|
|
{
|
|
.cmd = SMC_NETLINK_GET_FBACK_STATS,
|
|
/* can be retrieved by unprivileged users */
|
|
.dumpit = smc_nl_get_fback_stats,
|
|
},
|
|
};
|
|
|
|
static const struct nla_policy smc_gen_nl_policy[2] = {
|
|
[SMC_CMD_MAX_ATTR] = { .type = NLA_REJECT, },
|
|
};
|
|
|
|
/* SMC_GENL family definition */
|
|
struct genl_family smc_gen_nl_family __ro_after_init = {
|
|
.hdrsize = 0,
|
|
.name = SMC_GENL_FAMILY_NAME,
|
|
.version = SMC_GENL_FAMILY_VERSION,
|
|
.maxattr = SMC_CMD_MAX_ATTR,
|
|
.policy = smc_gen_nl_policy,
|
|
.netnsok = true,
|
|
.module = THIS_MODULE,
|
|
.ops = smc_gen_nl_ops,
|
|
.n_ops = ARRAY_SIZE(smc_gen_nl_ops)
|
|
};
|
|
|
|
int __init smc_nl_init(void)
|
|
{
|
|
return genl_register_family(&smc_gen_nl_family);
|
|
}
|
|
|
|
void smc_nl_exit(void)
|
|
{
|
|
genl_unregister_family(&smc_gen_nl_family);
|
|
}
|