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drivers/net: enic: Add an interface for USNIC to interact with firmware

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This patch adds an interface for USNIC to proxy firmware commands
through ENIC.

Signed-off-by: Neel Patel <neepatel@cisco.com>
Signed-off-by: Nishank Trivedi <nistrive@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neel Patel 2013-08-16 15:47:40 -07:00 committed by David S. Miller
parent 92e2b46962
commit 0b038566c0
5 changed files with 83 additions and 1 deletions
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2
drivers/net/ethernet/cisco/enic/Makefile
View File

@ -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

1
drivers/net/ethernet/cisco/enic/enic.h
View File

@ -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 */

48
drivers/net/ethernet/cisco/enic/enic_api.c Normal file
View File

@ -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);

30
drivers/net/ethernet/cisco/enic/enic_api.h Normal file
View File

@ -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

3
drivers/net/ethernet/cisco/enic/enic_main.c
View File

@ -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