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Date: Tue, 27 Jun 2017 17:28:52 +0300
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Leon Romanovsky <leonro@...lanox.com>,
Ilan Tayari <ilant@...lanox.com>,
Boris Pismenny <borisp@...lanox.com>,
Yevgeny Kliteynik <kliteyn@...lanox.com>,
Yossi Kuperman <yossiku@...lanox.com>,
Steffen Klassert <steffen.klassert@...unet.com>,
Sowmini Varadhan <sowmini.varadhan@...cle.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 12/16] net/mlx5: Accel, Add IPSec acceleration interface
From: Ilan Tayari <ilant@...lanox.com>
Add routines for manipulating the hardware IPSec SA database (SADB).
In Innova IPSec, a Security Association (SA) is added or deleted
via a command message over the SBU connection.
The HW then sends a response message over the same connection.
Add implementation for Innova IPSec (FPGA-based) hardware.
These routines will be used by the IPSec offload support in a later patch
However they may also be used by others such as RDMA and RoCE IPSec.
mlx5/accel is a middle acceleration layer to allow mlx5e and other ULPs
to work directly with mlx5_core rather than Innova FPGA or other mlx5
acceleration providers.
In this patchset we add Innova IPSec support and mlx5/accel delegates
IPSec offloads to Innova routines.
In the future, when IPSec/TLS or any other acceleration gets integrated
into ConnectX chip, mlx5/accel layer will provide the integrated
acceleration, rather than the Innova one.
Signed-off-by: Ilan Tayari <ilant@...lanox.com>
Signed-off-by: Boris Pismenny <borisp@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/Kconfig | 4 +
drivers/net/ethernet/mellanox/mlx5/core/Makefile | 5 +-
.../net/ethernet/mellanox/mlx5/core/accel/ipsec.c | 78 +++++
.../net/ethernet/mellanox/mlx5/core/accel/ipsec.h | 138 ++++++++
.../net/ethernet/mellanox/mlx5/core/fpga/core.h | 2 +
.../net/ethernet/mellanox/mlx5/core/fpga/ipsec.c | 376 +++++++++++++++++++++
.../net/ethernet/mellanox/mlx5/core/fpga/ipsec.h | 94 ++++++
drivers/net/ethernet/mellanox/mlx5/core/main.c | 9 +
include/linux/mlx5/mlx5_ifc_fpga.h | 67 ++++
9 files changed, 772 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.h
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
index cf1ef48bfd8d..d6c6cea8ebab 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
@@ -11,9 +11,13 @@ config MLX5_CORE
Core driver for low level functionality of the ConnectX-4 and
Connect-IB cards by Mellanox Technologies.
+config MLX5_ACCEL
+ bool
+
config MLX5_FPGA
bool "Mellanox Technologies Innova support"
depends on MLX5_CORE
+ select MLX5_ACCEL
---help---
Build support for the Innova family of network cards by Mellanox
Technologies. Innova network cards are comprised of a ConnectX chip
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
index 676388fde239..33557526f597 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
@@ -6,7 +6,10 @@ mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
mad.o transobj.o vport.o sriov.o fs_cmd.o fs_core.o \
fs_counters.o rl.o lag.o dev.o lib/gid.o
-mlx5_core-$(CONFIG_MLX5_FPGA) += fpga/cmd.o fpga/core.o fpga/conn.o fpga/sdk.o
+mlx5_core-$(CONFIG_MLX5_ACCEL) += accel/ipsec.o
+
+mlx5_core-$(CONFIG_MLX5_FPGA) += fpga/cmd.o fpga/core.o fpga/conn.o fpga/sdk.o \
+ fpga/ipsec.o
mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o eswitch.o eswitch_offloads.o \
en_main.o en_common.o en_fs.o en_ethtool.o en_tx.o \
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c
new file mode 100644
index 000000000000..53e69edaedde
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 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 <linux/mlx5/device.h>
+
+#include "accel/ipsec.h"
+#include "mlx5_core.h"
+#include "fpga/ipsec.h"
+
+void *mlx5_accel_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
+ struct mlx5_accel_ipsec_sa *cmd)
+{
+ if (!MLX5_IPSEC_DEV(mdev))
+ return ERR_PTR(-EOPNOTSUPP);
+
+ return mlx5_fpga_ipsec_sa_cmd_exec(mdev, cmd);
+}
+
+int mlx5_accel_ipsec_sa_cmd_wait(void *ctx)
+{
+ return mlx5_fpga_ipsec_sa_cmd_wait(ctx);
+}
+
+u32 mlx5_accel_ipsec_device_caps(struct mlx5_core_dev *mdev)
+{
+ return mlx5_fpga_ipsec_device_caps(mdev);
+}
+
+unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev)
+{
+ return mlx5_fpga_ipsec_counters_count(mdev);
+}
+
+int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
+ unsigned int count)
+{
+ return mlx5_fpga_ipsec_counters_read(mdev, counters, count);
+}
+
+int mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev)
+{
+ return mlx5_fpga_ipsec_init(mdev);
+}
+
+void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev)
+{
+ mlx5_fpga_ipsec_cleanup(mdev);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.h
new file mode 100644
index 000000000000..d6e20fea9554
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 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 __MLX5_ACCEL_IPSEC_H__
+#define __MLX5_ACCEL_IPSEC_H__
+
+#ifdef CONFIG_MLX5_ACCEL
+
+#include <linux/mlx5/driver.h>
+
+enum {
+ MLX5_ACCEL_IPSEC_DEVICE = BIT(1),
+ MLX5_ACCEL_IPSEC_IPV6 = BIT(2),
+ MLX5_ACCEL_IPSEC_ESP = BIT(3),
+ MLX5_ACCEL_IPSEC_LSO = BIT(4),
+};
+
+#define MLX5_IPSEC_SADB_IP_AH BIT(7)
+#define MLX5_IPSEC_SADB_IP_ESP BIT(6)
+#define MLX5_IPSEC_SADB_SA_VALID BIT(5)
+#define MLX5_IPSEC_SADB_SPI_EN BIT(4)
+#define MLX5_IPSEC_SADB_DIR_SX BIT(3)
+#define MLX5_IPSEC_SADB_IPV6 BIT(2)
+
+enum {
+ MLX5_IPSEC_CMD_ADD_SA = 0,
+ MLX5_IPSEC_CMD_DEL_SA = 1,
+};
+
+enum mlx5_accel_ipsec_enc_mode {
+ MLX5_IPSEC_SADB_MODE_NONE = 0,
+ MLX5_IPSEC_SADB_MODE_AES_GCM_128_AUTH_128 = 1,
+ MLX5_IPSEC_SADB_MODE_AES_GCM_256_AUTH_128 = 3,
+};
+
+#define MLX5_IPSEC_DEV(mdev) (mlx5_accel_ipsec_device_caps(mdev) & \
+ MLX5_ACCEL_IPSEC_DEVICE)
+
+struct mlx5_accel_ipsec_sa {
+ __be32 cmd;
+ u8 key_enc[32];
+ u8 key_auth[32];
+ __be32 sip[4];
+ __be32 dip[4];
+ union {
+ struct {
+ __be32 reserved;
+ u8 salt_iv[8];
+ __be32 salt;
+ } __packed gcm;
+ struct {
+ u8 salt[16];
+ } __packed cbc;
+ };
+ __be32 spi;
+ __be32 sw_sa_handle;
+ __be16 tfclen;
+ u8 enc_mode;
+ u8 sip_masklen;
+ u8 dip_masklen;
+ u8 flags;
+ u8 reserved[2];
+} __packed;
+
+/**
+ * mlx5_accel_ipsec_sa_cmd_exec - Execute an IPSec SADB command
+ * @mdev: mlx5 device
+ * @cmd: command to execute
+ * May be called from atomic context. Returns context pointer, or error
+ * Caller must eventually call mlx5_accel_ipsec_sa_cmd_wait from non-atomic
+ * context, to cleanup the context pointer
+ */
+void *mlx5_accel_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
+ struct mlx5_accel_ipsec_sa *cmd);
+
+/**
+ * mlx5_accel_ipsec_sa_cmd_wait - Wait for command execution completion
+ * @context: Context pointer returned from call to mlx5_accel_ipsec_sa_cmd_exec
+ * Sleeps (killable) until command execution is complete.
+ * Returns the command result, or -EINTR if killed
+ */
+int mlx5_accel_ipsec_sa_cmd_wait(void *context);
+
+u32 mlx5_accel_ipsec_device_caps(struct mlx5_core_dev *mdev);
+
+unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev);
+int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
+ unsigned int count);
+
+int mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev);
+void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev);
+
+#else
+
+#define MLX5_IPSEC_DEV(mdev) false
+
+static inline int mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev)
+{
+ return 0;
+}
+
+static inline void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev)
+{
+}
+
+#endif
+
+#endif /* __MLX5_ACCEL_IPSEC_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/core.h b/drivers/net/ethernet/mellanox/mlx5/core/fpga/core.h
index f64fa1cdc195..82405ed84725 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/core.h
@@ -51,6 +51,8 @@ struct mlx5_fpga_device {
struct mlx5_core_mkey mkey;
struct mlx5_uars_page *uar;
} conn_res;
+
+ struct mlx5_fpga_ipsec *ipsec;
};
#define mlx5_fpga_dbg(__adev, format, ...) \
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
new file mode 100644
index 000000000000..42970e2a05ff
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
@@ -0,0 +1,376 @@
+/*
+ * Copyright (c) 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 <linux/mlx5/driver.h>
+
+#include "mlx5_core.h"
+#include "fpga/ipsec.h"
+#include "fpga/sdk.h"
+#include "fpga/core.h"
+
+#define SBU_QP_QUEUE_SIZE 8
+
+enum mlx5_ipsec_response_syndrome {
+ MLX5_IPSEC_RESPONSE_SUCCESS = 0,
+ MLX5_IPSEC_RESPONSE_ILLEGAL_REQUEST = 1,
+ MLX5_IPSEC_RESPONSE_SADB_ISSUE = 2,
+ MLX5_IPSEC_RESPONSE_WRITE_RESPONSE_ISSUE = 3,
+};
+
+enum mlx5_fpga_ipsec_sacmd_status {
+ MLX5_FPGA_IPSEC_SACMD_PENDING,
+ MLX5_FPGA_IPSEC_SACMD_SEND_FAIL,
+ MLX5_FPGA_IPSEC_SACMD_COMPLETE,
+};
+
+struct mlx5_ipsec_command_context {
+ struct mlx5_fpga_dma_buf buf;
+ struct mlx5_accel_ipsec_sa sa;
+ enum mlx5_fpga_ipsec_sacmd_status status;
+ int status_code;
+ struct completion complete;
+ struct mlx5_fpga_device *dev;
+ struct list_head list; /* Item in pending_cmds */
+};
+
+struct mlx5_ipsec_sadb_resp {
+ __be32 syndrome;
+ __be32 sw_sa_handle;
+ u8 reserved[24];
+} __packed;
+
+struct mlx5_fpga_ipsec {
+ struct list_head pending_cmds;
+ spinlock_t pending_cmds_lock; /* Protects pending_cmds */
+ u32 caps[MLX5_ST_SZ_DW(ipsec_extended_cap)];
+ struct mlx5_fpga_conn *conn;
+};
+
+static bool mlx5_fpga_is_ipsec_device(struct mlx5_core_dev *mdev)
+{
+ if (!mdev->fpga || !MLX5_CAP_GEN(mdev, fpga))
+ return false;
+
+ if (MLX5_CAP_FPGA(mdev, ieee_vendor_id) !=
+ MLX5_FPGA_CAP_SANDBOX_VENDOR_ID_MLNX)
+ return false;
+
+ if (MLX5_CAP_FPGA(mdev, sandbox_product_id) !=
+ MLX5_FPGA_CAP_SANDBOX_PRODUCT_ID_IPSEC)
+ return false;
+
+ return true;
+}
+
+static void mlx5_fpga_ipsec_send_complete(struct mlx5_fpga_conn *conn,
+ struct mlx5_fpga_device *fdev,
+ struct mlx5_fpga_dma_buf *buf,
+ u8 status)
+{
+ struct mlx5_ipsec_command_context *context;
+
+ if (status) {
+ context = container_of(buf, struct mlx5_ipsec_command_context,
+ buf);
+ mlx5_fpga_warn(fdev, "IPSec command send failed with status %u\n",
+ status);
+ context->status = MLX5_FPGA_IPSEC_SACMD_SEND_FAIL;
+ complete(&context->complete);
+ }
+}
+
+static inline int syndrome_to_errno(enum mlx5_ipsec_response_syndrome syndrome)
+{
+ switch (syndrome) {
+ case MLX5_IPSEC_RESPONSE_SUCCESS:
+ return 0;
+ case MLX5_IPSEC_RESPONSE_SADB_ISSUE:
+ return -EEXIST;
+ case MLX5_IPSEC_RESPONSE_ILLEGAL_REQUEST:
+ return -EINVAL;
+ case MLX5_IPSEC_RESPONSE_WRITE_RESPONSE_ISSUE:
+ return -EIO;
+ }
+ return -EIO;
+}
+
+static void mlx5_fpga_ipsec_recv(void *cb_arg, struct mlx5_fpga_dma_buf *buf)
+{
+ struct mlx5_ipsec_sadb_resp *resp = buf->sg[0].data;
+ struct mlx5_ipsec_command_context *context;
+ enum mlx5_ipsec_response_syndrome syndrome;
+ struct mlx5_fpga_device *fdev = cb_arg;
+ unsigned long flags;
+
+ if (buf->sg[0].size < sizeof(*resp)) {
+ mlx5_fpga_warn(fdev, "Short receive from FPGA IPSec: %u < %zu bytes\n",
+ buf->sg[0].size, sizeof(*resp));
+ return;
+ }
+
+ mlx5_fpga_dbg(fdev, "mlx5_ipsec recv_cb syndrome %08x sa_id %x\n",
+ ntohl(resp->syndrome), ntohl(resp->sw_sa_handle));
+
+ spin_lock_irqsave(&fdev->ipsec->pending_cmds_lock, flags);
+ context = list_first_entry_or_null(&fdev->ipsec->pending_cmds,
+ struct mlx5_ipsec_command_context,
+ list);
+ if (context)
+ list_del(&context->list);
+ spin_unlock_irqrestore(&fdev->ipsec->pending_cmds_lock, flags);
+
+ if (!context) {
+ mlx5_fpga_warn(fdev, "Received IPSec offload response without pending command request\n");
+ return;
+ }
+ mlx5_fpga_dbg(fdev, "Handling response for %p\n", context);
+
+ if (context->sa.sw_sa_handle != resp->sw_sa_handle) {
+ mlx5_fpga_err(fdev, "mismatch SA handle. cmd 0x%08x vs resp 0x%08x\n",
+ ntohl(context->sa.sw_sa_handle),
+ ntohl(resp->sw_sa_handle));
+ return;
+ }
+
+ syndrome = ntohl(resp->syndrome);
+ context->status_code = syndrome_to_errno(syndrome);
+ context->status = MLX5_FPGA_IPSEC_SACMD_COMPLETE;
+
+ if (context->status_code)
+ mlx5_fpga_warn(fdev, "IPSec SADB command failed with syndrome %08x\n",
+ syndrome);
+ complete(&context->complete);
+}
+
+void *mlx5_fpga_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
+ struct mlx5_accel_ipsec_sa *cmd)
+{
+ struct mlx5_ipsec_command_context *context;
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+ unsigned long flags;
+ int res = 0;
+
+ BUILD_BUG_ON((sizeof(struct mlx5_accel_ipsec_sa) & 3) != 0);
+ if (!fdev || !fdev->ipsec)
+ return ERR_PTR(-EOPNOTSUPP);
+
+ context = kzalloc(sizeof(*context), GFP_ATOMIC);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+
+ memcpy(&context->sa, cmd, sizeof(*cmd));
+ context->buf.complete = mlx5_fpga_ipsec_send_complete;
+ context->buf.sg[0].size = sizeof(context->sa);
+ context->buf.sg[0].data = &context->sa;
+ init_completion(&context->complete);
+ context->dev = fdev;
+ spin_lock_irqsave(&fdev->ipsec->pending_cmds_lock, flags);
+ list_add_tail(&context->list, &fdev->ipsec->pending_cmds);
+ spin_unlock_irqrestore(&fdev->ipsec->pending_cmds_lock, flags);
+
+ context->status = MLX5_FPGA_IPSEC_SACMD_PENDING;
+
+ res = mlx5_fpga_sbu_conn_sendmsg(fdev->ipsec->conn, &context->buf);
+ if (res) {
+ mlx5_fpga_warn(fdev, "Failure sending IPSec command: %d\n",
+ res);
+ spin_lock_irqsave(&fdev->ipsec->pending_cmds_lock, flags);
+ list_del(&context->list);
+ spin_unlock_irqrestore(&fdev->ipsec->pending_cmds_lock, flags);
+ kfree(context);
+ return ERR_PTR(res);
+ }
+ /* Context will be freed by wait func after completion */
+ return context;
+}
+
+int mlx5_fpga_ipsec_sa_cmd_wait(void *ctx)
+{
+ struct mlx5_ipsec_command_context *context = ctx;
+ int res;
+
+ res = wait_for_completion_killable(&context->complete);
+ if (res) {
+ mlx5_fpga_warn(context->dev, "Failure waiting for IPSec command response\n");
+ return -EINTR;
+ }
+
+ if (context->status == MLX5_FPGA_IPSEC_SACMD_COMPLETE)
+ res = context->status_code;
+ else
+ res = -EIO;
+
+ kfree(context);
+ return res;
+}
+
+u32 mlx5_fpga_ipsec_device_caps(struct mlx5_core_dev *mdev)
+{
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+ u32 ret = 0;
+
+ if (mlx5_fpga_is_ipsec_device(mdev))
+ ret |= MLX5_ACCEL_IPSEC_DEVICE;
+ else
+ return ret;
+
+ if (!fdev->ipsec)
+ return ret;
+
+ if (MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps, esp))
+ ret |= MLX5_ACCEL_IPSEC_ESP;
+
+ if (MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps, ipv6))
+ ret |= MLX5_ACCEL_IPSEC_IPV6;
+
+ if (MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps, lso))
+ ret |= MLX5_ACCEL_IPSEC_LSO;
+
+ return ret;
+}
+
+unsigned int mlx5_fpga_ipsec_counters_count(struct mlx5_core_dev *mdev)
+{
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+
+ if (!fdev || !fdev->ipsec)
+ return 0;
+
+ return MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps,
+ number_of_ipsec_counters);
+}
+
+int mlx5_fpga_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
+ unsigned int counters_count)
+{
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+ unsigned int i;
+ u32 *data;
+ u32 count;
+ u64 addr;
+ int ret;
+
+ if (!fdev || !fdev->ipsec)
+ return 0;
+
+ addr = (u64)MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps,
+ ipsec_counters_addr_low) +
+ ((u64)MLX5_GET(ipsec_extended_cap, fdev->ipsec->caps,
+ ipsec_counters_addr_high) << 32);
+
+ count = mlx5_fpga_ipsec_counters_count(mdev);
+
+ data = kzalloc(sizeof(u32) * count * 2, GFP_KERNEL);
+ if (!data) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = mlx5_fpga_mem_read(fdev, count * sizeof(u64), addr, data,
+ MLX5_FPGA_ACCESS_TYPE_DONTCARE);
+ if (ret < 0) {
+ mlx5_fpga_err(fdev, "Failed to read IPSec counters from HW: %d\n",
+ ret);
+ goto out;
+ }
+ ret = 0;
+
+ if (count > counters_count)
+ count = counters_count;
+
+ /* Each counter is low word, then high. But each word is big-endian */
+ for (i = 0; i < count; i++)
+ counters[i] = (u64)ntohl(data[i * 2]) |
+ ((u64)ntohl(data[i * 2 + 1]) << 32);
+
+out:
+ kfree(data);
+ return ret;
+}
+
+int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev)
+{
+ struct mlx5_fpga_conn_attr init_attr = {0};
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+ struct mlx5_fpga_conn *conn;
+ int err;
+
+ if (!mlx5_fpga_is_ipsec_device(mdev))
+ return 0;
+
+ fdev->ipsec = kzalloc(sizeof(*fdev->ipsec), GFP_KERNEL);
+ if (!fdev->ipsec)
+ return -ENOMEM;
+
+ err = mlx5_fpga_get_sbu_caps(fdev, sizeof(fdev->ipsec->caps),
+ fdev->ipsec->caps);
+ if (err) {
+ mlx5_fpga_err(fdev, "Failed to retrieve IPSec extended capabilities: %d\n",
+ err);
+ goto error;
+ }
+
+ INIT_LIST_HEAD(&fdev->ipsec->pending_cmds);
+ spin_lock_init(&fdev->ipsec->pending_cmds_lock);
+
+ init_attr.rx_size = SBU_QP_QUEUE_SIZE;
+ init_attr.tx_size = SBU_QP_QUEUE_SIZE;
+ init_attr.recv_cb = mlx5_fpga_ipsec_recv;
+ init_attr.cb_arg = fdev;
+ conn = mlx5_fpga_sbu_conn_create(fdev, &init_attr);
+ if (IS_ERR(conn)) {
+ err = PTR_ERR(conn);
+ mlx5_fpga_err(fdev, "Error creating IPSec command connection %d\n",
+ err);
+ goto error;
+ }
+ fdev->ipsec->conn = conn;
+ return 0;
+
+error:
+ kfree(fdev->ipsec);
+ fdev->ipsec = NULL;
+ return err;
+}
+
+void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev)
+{
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+
+ if (!mlx5_fpga_is_ipsec_device(mdev))
+ return;
+
+ mlx5_fpga_sbu_conn_destroy(fdev->ipsec->conn);
+ kfree(fdev->ipsec);
+ fdev->ipsec = NULL;
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h
new file mode 100644
index 000000000000..26a3e4b56972
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 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 __MLX5_FPGA_IPSEC_H__
+#define __MLX5_FPGA_IPSEC_H__
+
+#include "accel/ipsec.h"
+
+#ifdef CONFIG_MLX5_FPGA
+
+void *mlx5_fpga_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
+ struct mlx5_accel_ipsec_sa *cmd);
+int mlx5_fpga_ipsec_sa_cmd_wait(void *context);
+
+u32 mlx5_fpga_ipsec_device_caps(struct mlx5_core_dev *mdev);
+unsigned int mlx5_fpga_ipsec_counters_count(struct mlx5_core_dev *mdev);
+int mlx5_fpga_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
+ unsigned int counters_count);
+
+int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev);
+void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev);
+
+#else
+
+static inline void *mlx5_fpga_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
+ struct mlx5_accel_ipsec_sa *cmd)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline int mlx5_fpga_ipsec_sa_cmd_wait(void *context)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline u32 mlx5_fpga_ipsec_device_caps(struct mlx5_core_dev *mdev)
+{
+ return 0;
+}
+
+static inline unsigned int
+mlx5_fpga_ipsec_counters_count(struct mlx5_core_dev *mdev)
+{
+ return 0;
+}
+
+static inline int mlx5_fpga_ipsec_counters_read(struct mlx5_core_dev *mdev,
+ u64 *counters)
+{
+ return 0;
+}
+
+static inline int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev)
+{
+ return 0;
+}
+
+static inline void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev)
+{
+}
+
+#endif /* CONFIG_MLX5_FPGA */
+
+#endif /* __MLX5_FPGA_SADB_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 684612778677..719f8e974482 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -58,6 +58,7 @@
#endif
#include "lib/mlx5.h"
#include "fpga/core.h"
+#include "accel/ipsec.h"
MODULE_AUTHOR("Eli Cohen <eli@...lanox.com>");
MODULE_DESCRIPTION("Mellanox Connect-IB, ConnectX-4 core driver");
@@ -1169,6 +1170,11 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
dev_err(&pdev->dev, "fpga device start failed %d\n", err);
goto err_fpga_start;
}
+ err = mlx5_accel_ipsec_init(dev);
+ if (err) {
+ dev_err(&pdev->dev, "IPSec device start failed %d\n", err);
+ goto err_ipsec_start;
+ }
if (mlx5_device_registered(dev)) {
mlx5_attach_device(dev);
@@ -1188,6 +1194,8 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
return 0;
err_reg_dev:
+ mlx5_accel_ipsec_cleanup(dev);
+err_ipsec_start:
mlx5_fpga_device_stop(dev);
err_fpga_start:
@@ -1267,6 +1275,7 @@ static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
if (mlx5_device_registered(dev))
mlx5_detach_device(dev);
+ mlx5_accel_ipsec_cleanup(dev);
mlx5_fpga_device_stop(dev);
mlx5_sriov_detach(dev);
diff --git a/include/linux/mlx5/mlx5_ifc_fpga.h b/include/linux/mlx5/mlx5_ifc_fpga.h
index a3576654179e..255a88d08078 100644
--- a/include/linux/mlx5/mlx5_ifc_fpga.h
+++ b/include/linux/mlx5/mlx5_ifc_fpga.h
@@ -32,6 +32,14 @@
#ifndef MLX5_IFC_FPGA_H
#define MLX5_IFC_FPGA_H
+enum {
+ MLX5_FPGA_CAP_SANDBOX_VENDOR_ID_MLNX = 0x2c9,
+};
+
+enum {
+ MLX5_FPGA_CAP_SANDBOX_PRODUCT_ID_IPSEC = 0x2,
+};
+
struct mlx5_ifc_fpga_shell_caps_bits {
u8 max_num_qps[0x10];
u8 reserved_at_10[0x8];
@@ -362,4 +370,63 @@ struct mlx5_ifc_fpga_destroy_qp_out_bits {
u8 reserved_at_40[0x40];
};
+struct mlx5_ifc_ipsec_extended_cap_bits {
+ u8 encapsulation[0x20];
+
+ u8 reserved_0[0x15];
+ u8 ipv4_fragment[0x1];
+ u8 ipv6[0x1];
+ u8 esn[0x1];
+ u8 lso[0x1];
+ u8 transport_and_tunnel_mode[0x1];
+ u8 tunnel_mode[0x1];
+ u8 transport_mode[0x1];
+ u8 ah_esp[0x1];
+ u8 esp[0x1];
+ u8 ah[0x1];
+ u8 ipv4_options[0x1];
+
+ u8 auth_alg[0x20];
+
+ u8 enc_alg[0x20];
+
+ u8 sa_cap[0x20];
+
+ u8 reserved_1[0x10];
+ u8 number_of_ipsec_counters[0x10];
+
+ u8 ipsec_counters_addr_low[0x20];
+ u8 ipsec_counters_addr_high[0x20];
+};
+
+struct mlx5_ifc_ipsec_counters_bits {
+ u8 dec_in_packets[0x40];
+
+ u8 dec_out_packets[0x40];
+
+ u8 dec_bypass_packets[0x40];
+
+ u8 enc_in_packets[0x40];
+
+ u8 enc_out_packets[0x40];
+
+ u8 enc_bypass_packets[0x40];
+
+ u8 drop_dec_packets[0x40];
+
+ u8 failed_auth_dec_packets[0x40];
+
+ u8 drop_enc_packets[0x40];
+
+ u8 success_add_sa[0x40];
+
+ u8 fail_add_sa[0x40];
+
+ u8 success_delete_sa[0x40];
+
+ u8 fail_delete_sa[0x40];
+
+ u8 dropped_cmd[0x40];
+};
+
#endif /* MLX5_IFC_FPGA_H */
--
2.11.0
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