358 lines
8.6 KiB
C
358 lines
8.6 KiB
C
/*
|
|
* Copyright (c) 2013, Cisco Systems, Inc. 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
|
|
* 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/netdevice.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include "enic_api.h"
|
|
#include "usnic_common_pkt_hdr.h"
|
|
#include "usnic_fwd.h"
|
|
#include "usnic_log.h"
|
|
|
|
static int usnic_fwd_devcmd_locked(struct usnic_fwd_dev *ufdev, int vnic_idx,
|
|
enum vnic_devcmd_cmd cmd, u64 *a0,
|
|
u64 *a1)
|
|
{
|
|
int status;
|
|
struct net_device *netdev = ufdev->netdev;
|
|
|
|
lockdep_assert_held(&ufdev->lock);
|
|
|
|
status = enic_api_devcmd_proxy_by_index(netdev,
|
|
vnic_idx,
|
|
cmd,
|
|
a0, a1,
|
|
1000);
|
|
if (status) {
|
|
if (status == ERR_EINVAL && cmd == CMD_DEL_FILTER) {
|
|
usnic_dbg("Dev %s vnic idx %u cmd %u already deleted",
|
|
ufdev->name, vnic_idx, cmd);
|
|
} else {
|
|
usnic_err("Dev %s vnic idx %u cmd %u failed with status %d\n",
|
|
ufdev->name, vnic_idx, cmd,
|
|
status);
|
|
}
|
|
} else {
|
|
usnic_dbg("Dev %s vnic idx %u cmd %u success",
|
|
ufdev->name, vnic_idx, cmd);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static int usnic_fwd_devcmd(struct usnic_fwd_dev *ufdev, int vnic_idx,
|
|
enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1)
|
|
{
|
|
int status;
|
|
|
|
spin_lock(&ufdev->lock);
|
|
status = usnic_fwd_devcmd_locked(ufdev, vnic_idx, cmd, a0, a1);
|
|
spin_unlock(&ufdev->lock);
|
|
|
|
return status;
|
|
}
|
|
|
|
struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev)
|
|
{
|
|
struct usnic_fwd_dev *ufdev;
|
|
|
|
ufdev = kzalloc(sizeof(*ufdev), GFP_KERNEL);
|
|
if (!ufdev)
|
|
return NULL;
|
|
|
|
ufdev->pdev = pdev;
|
|
ufdev->netdev = pci_get_drvdata(pdev);
|
|
spin_lock_init(&ufdev->lock);
|
|
BUILD_BUG_ON(sizeof(ufdev->name) != sizeof(ufdev->netdev->name));
|
|
strcpy(ufdev->name, ufdev->netdev->name);
|
|
|
|
return ufdev;
|
|
}
|
|
|
|
void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev)
|
|
{
|
|
kfree(ufdev);
|
|
}
|
|
|
|
void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, const char mac[ETH_ALEN])
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
memcpy(&ufdev->mac, mac, sizeof(ufdev->mac));
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
void usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr)
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
if (!ufdev->inaddr)
|
|
ufdev->inaddr = inaddr;
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev)
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
ufdev->inaddr = 0;
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev)
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
ufdev->link_up = 1;
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev)
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
ufdev->link_up = 0;
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu)
|
|
{
|
|
spin_lock(&ufdev->lock);
|
|
ufdev->mtu = mtu;
|
|
spin_unlock(&ufdev->lock);
|
|
}
|
|
|
|
static int usnic_fwd_dev_ready_locked(struct usnic_fwd_dev *ufdev)
|
|
{
|
|
lockdep_assert_held(&ufdev->lock);
|
|
|
|
if (!ufdev->link_up)
|
|
return -EPERM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int validate_filter_locked(struct usnic_fwd_dev *ufdev,
|
|
struct filter *filter)
|
|
{
|
|
|
|
lockdep_assert_held(&ufdev->lock);
|
|
|
|
if (filter->type == FILTER_IPV4_5TUPLE) {
|
|
if (!(filter->u.ipv4.flags & FILTER_FIELD_5TUP_DST_AD))
|
|
return -EACCES;
|
|
if (!(filter->u.ipv4.flags & FILTER_FIELD_5TUP_DST_PT))
|
|
return -EBUSY;
|
|
else if (ufdev->inaddr == 0)
|
|
return -EINVAL;
|
|
else if (filter->u.ipv4.dst_port == 0)
|
|
return -ERANGE;
|
|
else if (ntohl(ufdev->inaddr) != filter->u.ipv4.dst_addr)
|
|
return -EFAULT;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fill_tlv(struct filter_tlv *tlv, struct filter *filter,
|
|
struct filter_action *action)
|
|
{
|
|
tlv->type = CLSF_TLV_FILTER;
|
|
tlv->length = sizeof(struct filter);
|
|
*((struct filter *)&tlv->val) = *filter;
|
|
|
|
tlv = (struct filter_tlv *)((char *)tlv + sizeof(struct filter_tlv) +
|
|
sizeof(struct filter));
|
|
tlv->type = CLSF_TLV_ACTION;
|
|
tlv->length = sizeof(struct filter_action);
|
|
*((struct filter_action *)&tlv->val) = *action;
|
|
}
|
|
|
|
struct usnic_fwd_flow*
|
|
usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter,
|
|
struct usnic_filter_action *uaction)
|
|
{
|
|
struct filter_tlv *tlv;
|
|
struct pci_dev *pdev;
|
|
struct usnic_fwd_flow *flow;
|
|
uint64_t a0, a1;
|
|
uint64_t tlv_size;
|
|
dma_addr_t tlv_pa;
|
|
int status;
|
|
|
|
pdev = ufdev->pdev;
|
|
tlv_size = (2*sizeof(struct filter_tlv) + sizeof(struct filter) +
|
|
sizeof(struct filter_action));
|
|
|
|
flow = kzalloc(sizeof(*flow), GFP_ATOMIC);
|
|
if (!flow)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
tlv = dma_alloc_coherent(&pdev->dev, tlv_size, &tlv_pa, GFP_ATOMIC);
|
|
if (!tlv) {
|
|
usnic_err("Failed to allocate memory\n");
|
|
status = -ENOMEM;
|
|
goto out_free_flow;
|
|
}
|
|
|
|
fill_tlv(tlv, filter, &uaction->action);
|
|
|
|
spin_lock(&ufdev->lock);
|
|
status = usnic_fwd_dev_ready_locked(ufdev);
|
|
if (status) {
|
|
usnic_err("Forwarding dev %s not ready with status %d\n",
|
|
ufdev->name, status);
|
|
goto out_free_tlv;
|
|
}
|
|
|
|
status = validate_filter_locked(ufdev, filter);
|
|
if (status) {
|
|
usnic_err("Failed to validate filter with status %d\n",
|
|
status);
|
|
goto out_free_tlv;
|
|
}
|
|
|
|
/* Issue Devcmd */
|
|
a0 = tlv_pa;
|
|
a1 = tlv_size;
|
|
status = usnic_fwd_devcmd_locked(ufdev, uaction->vnic_idx,
|
|
CMD_ADD_FILTER, &a0, &a1);
|
|
if (status) {
|
|
usnic_err("VF %s Filter add failed with status:%d",
|
|
ufdev->name, status);
|
|
status = -EFAULT;
|
|
goto out_free_tlv;
|
|
} else {
|
|
usnic_dbg("VF %s FILTER ID:%llu", ufdev->name, a0);
|
|
}
|
|
|
|
flow->flow_id = (uint32_t) a0;
|
|
flow->vnic_idx = uaction->vnic_idx;
|
|
flow->ufdev = ufdev;
|
|
|
|
out_free_tlv:
|
|
spin_unlock(&ufdev->lock);
|
|
dma_free_coherent(&pdev->dev, tlv_size, tlv, tlv_pa);
|
|
if (!status)
|
|
return flow;
|
|
out_free_flow:
|
|
kfree(flow);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow)
|
|
{
|
|
int status;
|
|
u64 a0, a1;
|
|
|
|
a0 = flow->flow_id;
|
|
|
|
status = usnic_fwd_devcmd(flow->ufdev, flow->vnic_idx,
|
|
CMD_DEL_FILTER, &a0, &a1);
|
|
if (status) {
|
|
if (status == ERR_EINVAL) {
|
|
usnic_dbg("Filter %u already deleted for VF Idx %u pf: %s status: %d",
|
|
flow->flow_id, flow->vnic_idx,
|
|
flow->ufdev->name, status);
|
|
} else {
|
|
usnic_err("PF %s VF Idx %u Filter: %u FILTER DELETE failed with status %d",
|
|
flow->ufdev->name, flow->vnic_idx,
|
|
flow->flow_id, status);
|
|
}
|
|
status = 0;
|
|
/*
|
|
* Log the error and fake success to the caller because if
|
|
* a flow fails to be deleted in the firmware, it is an
|
|
* unrecoverable error.
|
|
*/
|
|
} else {
|
|
usnic_dbg("PF %s VF Idx %u Filter: %u FILTER DELETED",
|
|
flow->ufdev->name, flow->vnic_idx,
|
|
flow->flow_id);
|
|
}
|
|
|
|
kfree(flow);
|
|
return status;
|
|
}
|
|
|
|
int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx)
|
|
{
|
|
int status;
|
|
struct net_device *pf_netdev;
|
|
u64 a0, a1;
|
|
|
|
pf_netdev = ufdev->netdev;
|
|
a0 = qp_idx;
|
|
a1 = CMD_QP_RQWQ;
|
|
|
|
status = usnic_fwd_devcmd(ufdev, vnic_idx, CMD_QP_ENABLE,
|
|
&a0, &a1);
|
|
if (status) {
|
|
usnic_err("PF %s VNIC Index %u RQ Index: %u ENABLE Failed with status %d",
|
|
netdev_name(pf_netdev),
|
|
vnic_idx,
|
|
qp_idx,
|
|
status);
|
|
} else {
|
|
usnic_dbg("PF %s VNIC Index %u RQ Index: %u ENABLED",
|
|
netdev_name(pf_netdev),
|
|
vnic_idx, qp_idx);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx)
|
|
{
|
|
int status;
|
|
u64 a0, a1;
|
|
struct net_device *pf_netdev;
|
|
|
|
pf_netdev = ufdev->netdev;
|
|
a0 = qp_idx;
|
|
a1 = CMD_QP_RQWQ;
|
|
|
|
status = usnic_fwd_devcmd(ufdev, vnic_idx, CMD_QP_DISABLE,
|
|
&a0, &a1);
|
|
if (status) {
|
|
usnic_err("PF %s VNIC Index %u RQ Index: %u DISABLE Failed with status %d",
|
|
netdev_name(pf_netdev),
|
|
vnic_idx,
|
|
qp_idx,
|
|
status);
|
|
} else {
|
|
usnic_dbg("PF %s VNIC Index %u RQ Index: %u DISABLED",
|
|
netdev_name(pf_netdev),
|
|
vnic_idx,
|
|
qp_idx);
|
|
}
|
|
|
|
return status;
|
|
}
|