leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
44ce37bc8b
linux/drivers/infiniband/hw/usnic/usnic_fwd.c
Christophe JAILLET 3e9fed7fb6 RDMA/usnic: switch from 'pci_' to 'dma_' API 
The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script bellow.
It has been compile tested.

When memory is allocated, GFP_ATOMIC should be used to be consistent with
the surrounding code.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Link: https://lore.kernel.org/r/20200711073120.249146-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-16 15:42:05 -03:00

358 lines
8.6 KiB
C
Raw Blame History

/*
* 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, 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;
}
Reference in New Issue View Git Blame Copy Permalink