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Date: Fri, 16 Aug 2013 15:47:40 -0700
From: Neel Patel <neepatel@...co.com>
To: netdev@...r.kernel.org
Cc: umalhi@...co.com, Neel Patel <neepatel@...co.com>,
Nishank Trivedi <nistrive@...co.com>,
Christian Benvenuti <benve@...co.com>
Subject: [PATCH v3 2/3] drivers/net: enic: Add an interface for USNIC to interact with firmware
This patch adds an interface for USNIC to proxy firmware commands
through ENIC.
Signed-off-by: Neel Patel <neepatel@...co.com>
Signed-off-by: Nishank Trivedi <nistrive@...co.com>
Signed-off-by: Christian Benvenuti <benve@...co.com>
---
drivers/net/ethernet/cisco/enic/Makefile | 2 +-
drivers/net/ethernet/cisco/enic/enic.h | 1 +
drivers/net/ethernet/cisco/enic/enic_api.c | 48 +++++++++++++++++++++++++++++
drivers/net/ethernet/cisco/enic/enic_api.h | 30 ++++++++++++++++++
drivers/net/ethernet/cisco/enic/enic_main.c | 3 ++
5 files changed, 83 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/cisco/enic/enic_api.c
create mode 100644 drivers/net/ethernet/cisco/enic/enic_api.h
diff --git a/drivers/net/ethernet/cisco/enic/Makefile b/drivers/net/ethernet/cisco/enic/Makefile
index e52296d..239e1e4 100644
--- a/drivers/net/ethernet/cisco/enic/Makefile
+++ b/drivers/net/ethernet/cisco/enic/Makefile
@@ -2,5 +2,5 @@ obj-$(CONFIG_ENIC) := enic.o
enic-y := enic_main.o vnic_cq.o vnic_intr.o vnic_wq.o \
enic_res.o enic_dev.o enic_pp.o vnic_dev.o vnic_rq.o vnic_vic.o \
- enic_ethtool.o
+ enic_ethtool.o enic_api.o
diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h
index 75e842d..cacca29 100644
--- a/drivers/net/ethernet/cisco/enic/enic.h
+++ b/drivers/net/ethernet/cisco/enic/enic.h
@@ -96,6 +96,7 @@ struct enic {
#ifdef CONFIG_PCI_IOV
u16 num_vfs;
#endif
+ spinlock_t enic_api_lock;
struct enic_port_profile *pp;
/* work queue cache line section */
diff --git a/drivers/net/ethernet/cisco/enic/enic_api.c b/drivers/net/ethernet/cisco/enic/enic_api.c
new file mode 100644
index 0000000..e13efbd
--- /dev/null
+++ b/drivers/net/ethernet/cisco/enic/enic_api.c
@@ -0,0 +1,48 @@
+/**
+ * Copyright 2013 Cisco Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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/netdevice.h>
+#include <linux/spinlock.h>
+
+#include "vnic_dev.h"
+#include "vnic_devcmd.h"
+
+#include "enic_res.h"
+#include "enic.h"
+#include "enic_api.h"
+
+int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
+ enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
+{
+ int err;
+ struct enic *enic = netdev_priv(netdev);
+ struct vnic_dev *vdev = enic->vdev;
+
+ spin_lock(&enic->enic_api_lock);
+ spin_lock(&enic->devcmd_lock);
+
+ vnic_dev_cmd_proxy_by_index_start(vdev, vf);
+ err = vnic_dev_cmd(vdev, cmd, a0, a1, wait);
+ vnic_dev_cmd_proxy_end(vdev);
+
+ spin_unlock(&enic->devcmd_lock);
+ spin_unlock(&enic->enic_api_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index);
diff --git a/drivers/net/ethernet/cisco/enic/enic_api.h b/drivers/net/ethernet/cisco/enic/enic_api.h
new file mode 100644
index 0000000..6b9f925
--- /dev/null
+++ b/drivers/net/ethernet/cisco/enic/enic_api.h
@@ -0,0 +1,30 @@
+/**
+ * Copyright 2013 Cisco Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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 __ENIC_API_H__
+#define __ENIC_API_H__
+
+#include <linux/netdevice.h>
+
+#include "vnic_dev.h"
+#include "vnic_devcmd.h"
+
+int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
+ enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait);
+
+#endif
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index b12b32b..7f8891b 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -1733,6 +1733,7 @@ static void enic_reset(struct work_struct *work)
rtnl_lock();
+ spin_lock(&enic->enic_api_lock);
enic_dev_hang_notify(enic);
enic_stop(enic->netdev);
enic_dev_hang_reset(enic);
@@ -1741,6 +1742,7 @@ static void enic_reset(struct work_struct *work)
enic_set_rss_nic_cfg(enic);
enic_dev_set_ig_vlan_rewrite_mode(enic);
enic_open(enic->netdev);
+ spin_unlock(&enic->enic_api_lock);
rtnl_unlock();
}
@@ -2153,6 +2155,7 @@ static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
*/
spin_lock_init(&enic->devcmd_lock);
+ spin_lock_init(&enic->enic_api_lock);
/*
* Set ingress vlan rewrite mode before vnic initialization
--
1.8.4-rc0
--
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