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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_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,
.doit = smc_nl_remove_ueid,
.policy = smc_gen_ueid_policy,
},
{
.cmd = SMC_NETLINK_FLUSH_UEID,
.flags = GENL_ADMIN_PERM,
.doit = smc_nl_flush_ueid,
},
{
.cmd = SMC_NETLINK_DUMP_SEID,
/* can be retrieved by unprivileged users */
.dumpit = smc_nl_dump_seid,
},
{
.cmd = SMC_NETLINK_ENABLE_SEID,
.flags = GENL_ADMIN_PERM,
.doit = smc_nl_enable_seid,
},
{
.cmd = SMC_NETLINK_DISABLE_SEID,
.flags = GENL_ADMIN_PERM,
.doit = smc_nl_disable_seid,
},
{
.cmd = SMC_NETLINK_DUMP_HS_LIMITATION,
/* can be retrieved by unprivileged users */
.dumpit = smc_nl_dump_hs_limitation,
},
{
.cmd = SMC_NETLINK_ENABLE_HS_LIMITATION,
.flags = GENL_ADMIN_PERM,
.doit = smc_nl_enable_hs_limitation,
},
{
.cmd = SMC_NETLINK_DISABLE_HS_LIMITATION,
.flags = GENL_ADMIN_PERM,
.doit = smc_nl_disable_hs_limitation,
},
};
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),
.resv_start_op = SMC_NETLINK_DISABLE_HS_LIMITATION + 1,
};
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);
}
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