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Date: Tue, 28 Mar 2017 16:26:26 +0300
From: Aviad Yehezkel <aviadye@...lanox.com>
To: davem@...emloft.net, aviadye@...lanox.com, ilyal@...lanox.com,
borisp@...lanox.com, davejwatson@...com, netdev@...r.kernel.org
Cc: matanb@...lanox.com, liranl@...lanox.com, haggaie@...lanox.com,
tom@...bertland.com, herbert@...dor.apana.org.au, nmav@...lts.org,
fridolin.pokorny@...il.com, ilant@...lanox.com,
kliteyn@...lanox.com, linux-crypto@...r.kernel.org,
saeedm@...lanox.com, aviadye@....mellanox.co.il
Subject: [RFC TLS Offload Support 09/15] mlx/tls: Sysfs configuration interface Configure the driver/hardware interface via sysfs.
From: Ilya Lesokhin <ilyal@...lanox.com>
Signed-off-by: Guy Shapiro <guysh@...lanox.com>
Signed-off-by: Ilya Lesokhin <ilyal@...lanox.com>
Signed-off-by: Matan Barak <matanb@...lanox.com>
Signed-off-by: Aviad Yehezkel <aviadye@...lanox.com>
---
.../ethernet/mellanox/accelerator/tls/tls_sysfs.c | 194 +++++++++++++++++++++
.../ethernet/mellanox/accelerator/tls/tls_sysfs.h | 45 +++++
2 files changed, 239 insertions(+)
create mode 100644 drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.c
create mode 100644 drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.h
diff --git a/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.c b/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.c
new file mode 100644
index 0000000..2860fc3
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2015-2017 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <rdma/ib_verbs.h>
+
+#include "tls_sysfs.h"
+#include "tls_cmds.h"
+
+#ifdef MLX_TLS_SADB_RDMA
+struct mlx_tls_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct mlx_tls_dev *dev, char *buf);
+ ssize_t (*store)(struct mlx_tls_dev *dev, const char *buf,
+ size_t count);
+};
+
+#define MLX_TLS_ATTR(_name, _mode, _show, _store) \
+ struct mlx_tls_attribute mlx_tls_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode}, \
+ .show = _show, \
+ .store = _store, \
+ }
+#define to_mlx_tls_dev(obj) \
+ container_of(kobj, struct mlx_tls_dev, kobj)
+#define to_mlx_tls_attr(_attr) \
+ container_of(attr, struct mlx_tls_attribute, attr)
+
+static ssize_t mlx_tls_attr_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct mlx_tls_dev *dev = to_mlx_tls_dev(kobj);
+ struct mlx_tls_attribute *mlx_tls_attr = to_mlx_tls_attr(attr);
+ ssize_t ret = -EIO;
+
+ if (mlx_tls_attr->show)
+ ret = mlx_tls_attr->show(dev, buf);
+
+ return ret;
+}
+
+static ssize_t mlx_tls_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ struct mlx_tls_dev *dev = to_mlx_tls_dev(kobj);
+ struct mlx_tls_attribute *mlx_tls_attr = to_mlx_tls_attr(attr);
+ ssize_t ret = -EIO;
+
+ if (mlx_tls_attr->store)
+ ret = mlx_tls_attr->store(dev, buf, count);
+
+ return ret;
+}
+
+static ssize_t mlx_tls_sqpn_read(struct mlx_tls_dev *dev, char *buf)
+{
+ return sprintf(buf, "%u\n", dev->conn->qp->qp_num);
+}
+
+static ssize_t mlx_tls_sgid_read(struct mlx_tls_dev *dev, char *buf)
+{
+ union ib_gid *sgid = (union ib_gid *)&dev->conn->fpga_qpc.remote_ip;
+
+ return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
+ be16_to_cpu(((__be16 *)sgid->raw)[0]),
+ be16_to_cpu(((__be16 *)sgid->raw)[1]),
+ be16_to_cpu(((__be16 *)sgid->raw)[2]),
+ be16_to_cpu(((__be16 *)sgid->raw)[3]),
+ be16_to_cpu(((__be16 *)sgid->raw)[4]),
+ be16_to_cpu(((__be16 *)sgid->raw)[5]),
+ be16_to_cpu(((__be16 *)sgid->raw)[6]),
+ be16_to_cpu(((__be16 *)sgid->raw)[7]));
+}
+
+static ssize_t mlx_tls_dqpn_read(struct mlx_tls_dev *dev, char *buf)
+{
+ return sprintf(buf, "%u\n", dev->conn->fpga_qpn);
+}
+
+static ssize_t mlx_tls_dqpn_write(struct mlx_tls_dev *dev, const char *buf,
+ size_t count)
+{
+ int tmp;
+
+ tmp = sscanf(buf, "%u\n", &dev->conn->fpga_qpn);
+ mlx_accel_core_connect(dev->conn);
+
+ return count;
+}
+
+static ssize_t mlx_tls_dgid_read(struct mlx_tls_dev *dev, char *buf)
+{
+ union ib_gid *dgid = (union ib_gid *)&dev->conn->fpga_qpc.fpga_ip;
+
+ return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
+ be16_to_cpu(((__be16 *)dgid->raw)[0]),
+ be16_to_cpu(((__be16 *)dgid->raw)[1]),
+ be16_to_cpu(((__be16 *)dgid->raw)[2]),
+ be16_to_cpu(((__be16 *)dgid->raw)[3]),
+ be16_to_cpu(((__be16 *)dgid->raw)[4]),
+ be16_to_cpu(((__be16 *)dgid->raw)[5]),
+ be16_to_cpu(((__be16 *)dgid->raw)[6]),
+ be16_to_cpu(((__be16 *)dgid->raw)[7]));
+}
+
+static ssize_t mlx_tls_dgid_write(struct mlx_tls_dev *dev, const char *buf,
+ size_t count)
+{
+ union ib_gid *dgid = (union ib_gid *)&dev->conn->fpga_qpc.fpga_ip;
+ int i = 0;
+ int tmp;
+
+ tmp = sscanf(buf,
+ "%04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx\n",
+ &(((__be16 *)dgid->raw)[0]),
+ &(((__be16 *)dgid->raw)[1]),
+ &(((__be16 *)dgid->raw)[2]),
+ &(((__be16 *)dgid->raw)[3]),
+ &(((__be16 *)dgid->raw)[4]),
+ &(((__be16 *)dgid->raw)[5]),
+ &(((__be16 *)dgid->raw)[6]),
+ &(((__be16 *)dgid->raw)[7]));
+
+ for (i = 0; i < 8; i++)
+ ((__be16 *)dgid->raw)[i] = cpu_to_be16(((u16 *)dgid->raw)[i]);
+
+ return count;
+}
+
+static void mlx_tls_dev_release(struct kobject *kobj)
+{
+}
+
+static MLX_TLS_ATTR(sqpn, 0444, mlx_tls_sqpn_read, NULL);
+static MLX_TLS_ATTR(sgid, 0444, mlx_tls_sgid_read, NULL);
+static MLX_TLS_ATTR(dqpn, 0666, mlx_tls_dqpn_read, mlx_tls_dqpn_write);
+static MLX_TLS_ATTR(dgid, 0666, mlx_tls_dgid_read, mlx_tls_dgid_write);
+
+struct attribute *mlx_tls_def_attrs[] = {
+ &mlx_tls_attr_sqpn.attr,
+ &mlx_tls_attr_sgid.attr,
+ &mlx_tls_attr_dqpn.attr,
+ &mlx_tls_attr_dgid.attr,
+ NULL,
+};
+
+const struct sysfs_ops mlx_tls_dev_sysfs_ops = {
+ .show = mlx_tls_attr_show,
+ .store = mlx_tls_attr_store,
+};
+
+static struct kobj_type mlx_tls_dev_type = {
+ .release = mlx_tls_dev_release,
+ .sysfs_ops = &mlx_tls_dev_sysfs_ops,
+ .default_attrs = mlx_tls_def_attrs,
+};
+
+int tls_sysfs_init_and_add(struct kobject *kobj, struct kobject *parent,
+ const char *fmt, char *arg)
+{
+ return kobject_init_and_add(kobj, &mlx_tls_dev_type,
+ parent,
+ fmt, arg);
+}
+#endif
diff --git a/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.h b/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.h
new file mode 100644
index 0000000..bfaa857
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/accelerator/tls/tls_sysfs.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2015-2017 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+#ifndef __TLS_SYSFS_H__
+#define __TLS_SYSFS_H__
+
+#include <linux/sysfs.h>
+
+#include "tls.h"
+
+#ifdef MLX_TLS_SADB_RDMA
+int tls_sysfs_init_and_add(struct kobject *kobj, struct kobject *parent,
+ const char *fmt, char *arg);
+#endif
+
+#endif /* __TLS_SYSFS_H__ */
--
2.7.4
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