net/smc: Introduce generic netlink interface for diagnostic purposes (e8372d9d) · Commits · 戴 / test

include/uapi/linux/smc.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -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 */

+1 −1

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		@@ -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

+9 −1

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		@@ -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 @@ out_alloc_hs_wq:
		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();
		}

0 → 100644

+53 −0

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		// 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);
		}

0 → 100644

+23 −0

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		/* 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