Commit e8372d9d authored by Guvenc Gulce's avatar Guvenc Gulce Committed by Jakub Kicinski

net/smc: Introduce generic netlink interface for diagnostic purposes

Introduce generic netlink interface infrastructure to expose
the diagnostic information regarding smc linkgroups, links and devices.
Signed-off-by: default avatarGuvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 49407ae2
......@@ -33,4 +33,15 @@ enum { /* SMC PNET Table commands */
#define SMCR_GENL_FAMILY_NAME "SMC_PNETID"
#define SMCR_GENL_FAMILY_VERSION 1
/* gennetlink interface to access non-socket information from SMC module */
#define SMC_GENL_FAMILY_NAME "SMC_GEN_NETLINK"
#define SMC_GENL_FAMILY_VERSION 1
/* SMC_GENL_FAMILY top level attributes */
enum {
SMC_GEN_UNSPEC,
__SMC_GEN_MAX,
SMC_GEN_MAX = __SMC_GEN_MAX - 1
};
#endif /* _UAPI_LINUX_SMC_H */
......@@ -2,4 +2,4 @@
obj-$(CONFIG_SMC) += smc.o
obj-$(CONFIG_SMC_DIAG) += smc_diag.o
smc-y := af_smc.o smc_pnet.o smc_ib.o smc_clc.o smc_core.o smc_wr.o smc_llc.o
smc-y += smc_cdc.o smc_tx.o smc_rx.o smc_close.o smc_ism.o
smc-y += smc_cdc.o smc_tx.o smc_rx.o smc_close.o smc_ism.o smc_netlink.o
......@@ -45,6 +45,7 @@
#include "smc_ib.h"
#include "smc_ism.h"
#include "smc_pnet.h"
#include "smc_netlink.h"
#include "smc_tx.h"
#include "smc_rx.h"
#include "smc_close.h"
......@@ -2495,10 +2496,14 @@ static int __init smc_init(void)
smc_ism_init();
smc_clc_init();
rc = smc_pnet_init();
rc = smc_nl_init();
if (rc)
goto out_pernet_subsys;
rc = smc_pnet_init();
if (rc)
goto out_nl;
rc = -ENOMEM;
smc_hs_wq = alloc_workqueue("smc_hs_wq", 0, 0);
if (!smc_hs_wq)
......@@ -2569,6 +2574,8 @@ static int __init smc_init(void)
destroy_workqueue(smc_hs_wq);
out_pnet:
smc_pnet_exit();
out_nl:
smc_nl_exit();
out_pernet_subsys:
unregister_pernet_subsys(&smc_net_ops);
......@@ -2586,6 +2593,7 @@ static void __exit smc_exit(void)
proto_unregister(&smc_proto6);
proto_unregister(&smc_proto);
smc_pnet_exit();
smc_nl_exit();
unregister_pernet_subsys(&smc_net_ops);
rcu_barrier();
}
......
// 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_netlink.h"
#define SMC_CMD_MAX_ATTR 1
/* SMC_GENL generic netlink operation definition */
static const struct genl_ops smc_gen_nl_ops[] = {
};
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);
}
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* SMC Generic netlink operations
*
* Copyright IBM Corp. 2020
*
* Author(s): Guvenc Gulce <guvenc@linux.ibm.com>
*/
#ifndef _SMC_NETLINK_H
#define _SMC_NETLINK_H
#include <net/netlink.h>
#include <net/genetlink.h>
extern struct genl_family smc_gen_nl_family;
int smc_nl_init(void) __init;
void smc_nl_exit(void);
#endif
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