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path: root/drivers/infiniband/hw/usnic/usnic_fwd.c
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Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_fwd.c')
-rw-r--r--drivers/infiniband/hw/usnic/usnic_fwd.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_fwd.c b/drivers/infiniband/hw/usnic/usnic_fwd.c
new file mode 100644
index 000000000000..8e42216362e7
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_fwd.c
@@ -0,0 +1,243 @@
+/*
+ * 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;
+}