158 lines
3.6 KiB
C
158 lines
3.6 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_clc.h"
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#include "smc_stats.h"
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#include "smc_netlink.h"
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const struct nla_policy
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smc_gen_ueid_policy[SMC_NLA_EID_TABLE_MAX + 1] = {
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[SMC_NLA_EID_TABLE_UNSPEC] = { .type = NLA_UNSPEC },
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[SMC_NLA_EID_TABLE_ENTRY] = { .type = NLA_STRING,
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.len = SMC_MAX_EID_LEN,
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},
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};
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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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.cmd = SMC_NETLINK_DUMP_UEID,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_dump_ueid,
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},
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{
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.cmd = SMC_NETLINK_ADD_UEID,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_add_ueid,
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.policy = smc_gen_ueid_policy,
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},
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{
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.cmd = SMC_NETLINK_REMOVE_UEID,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_remove_ueid,
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.policy = smc_gen_ueid_policy,
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},
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{
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.cmd = SMC_NETLINK_FLUSH_UEID,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_flush_ueid,
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},
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{
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.cmd = SMC_NETLINK_DUMP_SEID,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_dump_seid,
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},
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{
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.cmd = SMC_NETLINK_ENABLE_SEID,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_enable_seid,
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},
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{
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.cmd = SMC_NETLINK_DISABLE_SEID,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_disable_seid,
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},
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{
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.cmd = SMC_NETLINK_DUMP_HS_LIMITATION,
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/* can be retrieved by unprivileged users */
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.dumpit = smc_nl_dump_hs_limitation,
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},
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{
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.cmd = SMC_NETLINK_ENABLE_HS_LIMITATION,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_enable_hs_limitation,
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},
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{
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.cmd = SMC_NETLINK_DISABLE_HS_LIMITATION,
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.flags = GENL_ADMIN_PERM,
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.doit = smc_nl_disable_hs_limitation,
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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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.resv_start_op = SMC_NETLINK_DISABLE_HS_LIMITATION + 1,
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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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