net/smc/smc_netlink.c

Source file repositories/reference/linux-study-clean/net/smc/smc_netlink.c

File Facts

System
Linux kernel
Corpus path
net/smc/smc_netlink.c
Extension
.c
Size
3682 bytes
Lines
158
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

// 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_clc.h"
#include "smc_stats.h"
#include "smc_netlink.h"

const struct nla_policy
smc_gen_ueid_policy[SMC_NLA_EID_TABLE_MAX + 1] = {
	[SMC_NLA_EID_TABLE_UNSPEC]	= { .type = NLA_UNSPEC },
	[SMC_NLA_EID_TABLE_ENTRY]	= { .type = NLA_STRING,
					    .len = SMC_MAX_EID_LEN,
					  },
};

#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,
	},
	{
		.cmd = SMC_NETLINK_DUMP_UEID,
		/* can be retrieved by unprivileged users */
		.dumpit = smc_nl_dump_ueid,
	},
	{
		.cmd = SMC_NETLINK_ADD_UEID,
		.flags = GENL_ADMIN_PERM,
		.doit = smc_nl_add_ueid,
		.policy = smc_gen_ueid_policy,
	},
	{
		.cmd = SMC_NETLINK_REMOVE_UEID,
		.flags = GENL_ADMIN_PERM,

Annotation

Implementation Notes