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/*
* Copyright (c) 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/pci.h>
#include "enic_api.h"
#include "usnic_common_pkt_hdr.h"
#include "usnic_fwd.h"
#include "usnic_log.h"
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);
return ufdev;
}
void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev)
{
kfree(ufdev);
}
static int usnic_fwd_devcmd(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;
spin_lock(&ufdev->lock);
status = enic_api_devcmd_proxy_by_index(netdev,
vnic_idx,
cmd,
a0, a1,
1000);
spin_unlock(&ufdev->lock);
if (status) {
if (status == ERR_EINVAL && cmd == CMD_DEL_FILTER) {
usnic_dbg("Dev %s vnic idx %u cmd %u already deleted",
netdev_name(netdev), vnic_idx, cmd);
} else {
usnic_err("Dev %s vnic idx %u cmd %u failed with status %d\n",
netdev_name(netdev), vnic_idx, cmd,
status);
}
} else {
usnic_dbg("Dev %s vnic idx %u cmd %u success",
netdev_name(netdev), vnic_idx,
cmd);
}
return status;
}
int usnic_fwd_add_usnic_filter(struct usnic_fwd_dev *ufdev, int vnic_idx,
int rq_idx, struct usnic_fwd_filter *fwd_filter,
struct usnic_fwd_filter_hndl **filter_hndl)
{
struct filter_tlv *tlv, *tlv_va;
struct filter *filter;
struct filter_action *action;
struct pci_dev *pdev;
struct usnic_fwd_filter_hndl *usnic_filter_hndl;
int status;
u64 a0, a1;
u64 tlv_size;
dma_addr_t tlv_pa;
pdev = ufdev->pdev;
tlv_size = (2*sizeof(struct filter_tlv) +
sizeof(struct filter) +
sizeof(struct filter_action));
tlv = pci_alloc_consistent(pdev, tlv_size, &tlv_pa);
if (!tlv) {
usnic_err("Failed to allocate memory\n");
return -ENOMEM;
}
usnic_filter_hndl = kzalloc(sizeof(*usnic_filter_hndl), GFP_ATOMIC);
if (!usnic_filter_hndl) {
usnic_err("Failed to allocate memory for hndl\n");
pci_free_consistent(pdev, tlv_size, tlv, tlv_pa);
return -ENOMEM;
}
tlv_va = tlv;
a0 = tlv_pa;
a1 = tlv_size;
memset(tlv, 0, tlv_size);
tlv->type = CLSF_TLV_FILTER;
tlv->length = sizeof(struct filter);
filter = (struct filter *)&tlv->val;
filter->type = FILTER_USNIC_ID;
filter->u.usnic.ethtype = USNIC_ROCE_ETHERTYPE;
filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE |
FILTER_FIELD_USNIC_ID |
FILTER_FIELD_USNIC_PROTO;
filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER <<
USNIC_ROCE_GRH_VER_SHIFT)
| USNIC_PROTO_VER;
filter->u.usnic.usnic_id = fwd_filter->port_num;
tlv = (struct filter_tlv *)((char *)tlv + sizeof(struct filter_tlv) +
sizeof(struct filter));
tlv->type = CLSF_TLV_ACTION;
tlv->length = sizeof(struct filter_action);
action = (struct filter_action *)&tlv->val;
action->type = FILTER_ACTION_RQ_STEERING;
action->u.rq_idx = rq_idx;
status = usnic_fwd_devcmd(ufdev, vnic_idx, CMD_ADD_FILTER, &a0, &a1);
pci_free_consistent(pdev, tlv_size, tlv_va, tlv_pa);
if (status) {
usnic_err("VF %s Filter add failed with status:%d",
pci_name(pdev),
status);
kfree(usnic_filter_hndl);
return status;
} else {
usnic_dbg("VF %s FILTER ID:%u",
pci_name(pdev),
(u32)a0);
}
usnic_filter_hndl->type = FILTER_USNIC_ID;
usnic_filter_hndl->id = (u32)a0;
usnic_filter_hndl->vnic_idx = vnic_idx;
usnic_filter_hndl->ufdev = ufdev;
usnic_filter_hndl->filter = fwd_filter;
*filter_hndl = usnic_filter_hndl;
return status;
}
int usnic_fwd_del_filter(struct usnic_fwd_filter_hndl *filter_hndl)
{
int status;
u64 a0, a1;
struct net_device *netdev;
netdev = filter_hndl->ufdev->netdev;
a0 = filter_hndl->id;
status = usnic_fwd_devcmd(filter_hndl->ufdev, filter_hndl->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",
filter_hndl->id, filter_hndl->vnic_idx,
netdev_name(netdev), status);
status = 0;
kfree(filter_hndl);
} else {
usnic_err("PF %s VF Idx %u Filter: %u FILTER DELETE failed with status %d",
netdev_name(netdev),
filter_hndl->vnic_idx, filter_hndl->id,
status);
}
} else {
usnic_dbg("PF %s VF Idx %u Filter: %u FILTER DELETED",
netdev_name(netdev), filter_hndl->vnic_idx,
filter_hndl->id);
kfree(filter_hndl);
}
return status;
}
int usnic_fwd_enable_rq(struct usnic_fwd_dev *ufdev, int vnic_idx, int rq_idx)
{
int status;
struct net_device *pf_netdev;
u64 a0, a1;
pf_netdev = ufdev->netdev;
a0 = rq_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,
rq_idx,
status);
} else {
usnic_dbg("PF %s VNIC Index %u RQ Index: %u ENABLED",
netdev_name(pf_netdev),
vnic_idx, rq_idx);
}
return status;
}
int usnic_fwd_disable_rq(struct usnic_fwd_dev *ufdev, int vnic_idx, int rq_idx)
{
int status;
u64 a0, a1;
struct net_device *pf_netdev;
pf_netdev = ufdev->netdev;
a0 = rq_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,
rq_idx,
status);
} else {
usnic_dbg("PF %s VNIC Index %u RQ Index: %u DISABLED",
netdev_name(pf_netdev),
vnic_idx,
rq_idx);
}
return status;
}
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