1 files changed, 157 insertions, 0 deletions
diff --git a/net/smc/smc_netlink.c b/net/smc/smc_netlink.c
new file mode 100644
index 0000000000..621c46c700
--- /dev/null
+++ b/net/smc/smc_netlink.c
@@ -0,0 +1,157 @@
+// 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);
+}