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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
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/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* Generic netlink support functions to interact with SMC module
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*
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* Copyright IBM Corp. 2020
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*
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* Author(s): Guvenc Gulce <guvenc@linux.ibm.com>
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*/
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#include <linux/module.h>
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#include <linux/list.h>
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#include <linux/ctype.h>
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#include <linux/mutex.h>
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#include <linux/if.h>
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#include <linux/smc.h>
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#include "smc_core.h"
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#include "smc_ism.h"
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#include "smc_ib.h"
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#include "smc_stats.h"
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#include "smc_netlink.h"
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#define SMC_CMD_MAX_ATTR 1
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/* SMC_GENL generic netlink operation definition */
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static const struct genl_ops smc_gen_nl_ops[] = {
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{
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.cmd = SMC_NETLINK_GET_SYS_INFO,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_get_sys_info,
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},
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{
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.cmd = SMC_NETLINK_GET_LGR_SMCR,
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/* can be retrieved by unprivileged users */
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.dumpit = smcr_nl_get_lgr,
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},
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{
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.cmd = SMC_NETLINK_GET_LINK_SMCR,
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/* can be retrieved by unprivileged users */
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.dumpit = smcr_nl_get_link,
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},
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{
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.cmd = SMC_NETLINK_GET_LGR_SMCD,
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/* can be retrieved by unprivileged users */
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.dumpit = smcd_nl_get_lgr,
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},
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{
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.cmd = SMC_NETLINK_GET_DEV_SMCD,
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/* can be retrieved by unprivileged users */
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.dumpit = smcd_nl_get_device,
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},
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{
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.cmd = SMC_NETLINK_GET_DEV_SMCR,
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/* can be retrieved by unprivileged users */
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.dumpit = smcr_nl_get_device,
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},
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{
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.cmd = SMC_NETLINK_GET_STATS,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_get_stats,
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},
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{
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.cmd = SMC_NETLINK_GET_FBACK_STATS,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_get_fback_stats,
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},
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};
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static const struct nla_policy smc_gen_nl_policy[2] = {
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[SMC_CMD_MAX_ATTR] = { .type = NLA_REJECT, },
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};
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/* SMC_GENL family definition */
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struct genl_family smc_gen_nl_family __ro_after_init = {
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.hdrsize = 0,
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.name = SMC_GENL_FAMILY_NAME,
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.version = SMC_GENL_FAMILY_VERSION,
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.maxattr = SMC_CMD_MAX_ATTR,
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.policy = smc_gen_nl_policy,
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.netnsok = true,
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.module = THIS_MODULE,
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.ops = smc_gen_nl_ops,
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.n_ops = ARRAY_SIZE(smc_gen_nl_ops)
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};
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int __init smc_nl_init(void)
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{
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return genl_register_family(&smc_gen_nl_family);
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}
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void smc_nl_exit(void)
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{
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genl_unregister_family(&smc_gen_nl_family);
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}
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