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3c572145c2
With SMC-Dv2 users can configure if the static system EID should be used during CLC handshake, or if only user EIDs are allowed. Add generic netlink support to enable and disable the system EID, and to retrieve the system EID and its current enabled state. Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Reviewed-by: Guvenc Gulce <guvenc@linux.ibm.com> Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
142 lines
3.2 KiB
C
142 lines
3.2 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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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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};
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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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