[PATCH 2/2] net: Add support for NTB virtual ethernet device
A virtual ethernet device that uses the NTB transport API to send/receive data.
Signed-off-by: Jon Mason
---
drivers/net/Kconfig |4 +
drivers/net/Makefile |1 +
drivers/net/ntb_netdev.c | 407 ++
3 files changed, 412 insertions(+)
create mode 100644 drivers/net/ntb_netdev.c
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 0c2bd80..9bf8a71 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -178,6 +178,10 @@ config NETPOLL_TRAP
config NET_POLL_CONTROLLER
def_bool NETPOLL
+config NTB_NETDEV
+ tristate "Virtual Ethernet over NTB"
+ depends on NTB
+
config RIONET
tristate "RapidIO Ethernet over messaging driver support"
depends on RAPIDIO
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 3d375ca..9890148 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -69,3 +69,4 @@ obj-$(CONFIG_USB_IPHETH)+= usb/
obj-$(CONFIG_USB_CDC_PHONET) += usb/
obj-$(CONFIG_HYPERV_NET) += hyperv/
+obj-$(CONFIG_NTB_NETDEV) += ntb_netdev.o
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
new file mode 100644
index 000..bc76c63
--- /dev/null
+++ b/drivers/net/ntb_netdev.c
@@ -0,0 +1,407 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 Intel Corporation. All rights reserved.
+ *
+ * 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 copy
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Intel PCIe NTB Network Linux driver
+ *
+ * Contact Information:
+ * Jon Mason
+ */
+#include
+#include
+#include
+#include
+#include
+
+#define NTB_NETDEV_VER "0.5"
+
+MODULE_DESCRIPTION(KBUILD_MODNAME);
+MODULE_VERSION(NTB_NETDEV_VER);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Intel Corporation");
+
+struct ntb_netdev {
+ struct list_head list;
+ struct pci_dev *pdev;
+ struct net_device *ndev;
+ struct ntb_transport_qp *qp;
+};
+
+#defineNTB_TX_TIMEOUT_MS 1000
+#defineNTB_RXQ_SIZE100
+
+static LIST_HEAD(dev_list);
+
+static void ntb_netdev_event_handler(void *data, int status)
+{
+ struct net_device *ndev = data;
+ struct ntb_netdev *dev = netdev_priv(ndev);
+
+ netdev_dbg(ndev, "Event %x, Link %x\n", status,
+ ntb_transport_link_query(dev->qp));
+
+ /* Currently, only link status event is supported */
+ if (status)
+ netif_carrier_on(ndev);
+ else
+ netif_carrier_off(ndev);
+}
+
+static void ntb_netdev_rx_handler(void *data, struct ntb_transport_qp *qp)
+{
+ struct net_device *ndev = data;
+ struct sk_buff *skb;
+ int len, rc;
+
+ while ((skb = ntb_transport_rx_dequeue(qp, ))) {
+ netdev_dbg(ndev, "%s: %d byte payload received\n", __func__,
+ len);
+
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ if (netif_rx(skb) == NET_RX_DROP) {
+
[PATCH 2/2] net: Add support for NTB virtual ethernet device
A virtual ethernet device that uses the NTB transport API to send/receive data.
Signed-off-by: Jon Mason jon.ma...@intel.com
---
drivers/net/Kconfig |4 +
drivers/net/Makefile |1 +
drivers/net/ntb_netdev.c | 407 ++
3 files changed, 412 insertions(+)
create mode 100644 drivers/net/ntb_netdev.c
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 0c2bd80..9bf8a71 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -178,6 +178,10 @@ config NETPOLL_TRAP
config NET_POLL_CONTROLLER
def_bool NETPOLL
+config NTB_NETDEV
+ tristate Virtual Ethernet over NTB
+ depends on NTB
+
config RIONET
tristate RapidIO Ethernet over messaging driver support
depends on RAPIDIO
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 3d375ca..9890148 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -69,3 +69,4 @@ obj-$(CONFIG_USB_IPHETH)+= usb/
obj-$(CONFIG_USB_CDC_PHONET) += usb/
obj-$(CONFIG_HYPERV_NET) += hyperv/
+obj-$(CONFIG_NTB_NETDEV) += ntb_netdev.o
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
new file mode 100644
index 000..bc76c63
--- /dev/null
+++ b/drivers/net/ntb_netdev.c
@@ -0,0 +1,407 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 Intel Corporation. All rights reserved.
+ *
+ * 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 copy
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Intel PCIe NTB Network Linux driver
+ *
+ * Contact Information:
+ * Jon Mason jon.ma...@intel.com
+ */
+#include linux/etherdevice.h
+#include linux/ethtool.h
+#include linux/module.h
+#include linux/pci.h
+#include linux/ntb.h
+
+#define NTB_NETDEV_VER 0.5
+
+MODULE_DESCRIPTION(KBUILD_MODNAME);
+MODULE_VERSION(NTB_NETDEV_VER);
+MODULE_LICENSE(Dual BSD/GPL);
+MODULE_AUTHOR(Intel Corporation);
+
+struct ntb_netdev {
+ struct list_head list;
+ struct pci_dev *pdev;
+ struct net_device *ndev;
+ struct ntb_transport_qp *qp;
+};
+
+#defineNTB_TX_TIMEOUT_MS 1000
+#defineNTB_RXQ_SIZE100
+
+static LIST_HEAD(dev_list);
+
+static void ntb_netdev_event_handler(void *data, int status)
+{
+ struct net_device *ndev = data;
+ struct ntb_netdev *dev = netdev_priv(ndev);
+
+ netdev_dbg(ndev, Event %x, Link %x\n, status,
+ ntb_transport_link_query(dev-qp));
+
+ /* Currently, only link status event is supported */
+ if (status)
+ netif_carrier_on(ndev);
+ else
+ netif_carrier_off(ndev);
+}
+
+static void ntb_netdev_rx_handler(void *data, struct ntb_transport_qp *qp)
+{
+ struct net_device *ndev = data;
+ struct sk_buff *skb;
+ int len, rc;
+
+ while ((skb = ntb_transport_rx_dequeue(qp, len))) {
+ netdev_dbg(ndev, %s: %d byte payload received\n, __func__,
+ len);
+
+ skb_put(skb, len);
+ skb-protocol = eth_type_trans(skb, ndev);
+
