summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/usnic/usnic_fwd.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_fwd.h')
-rw-r--r--drivers/infiniband/hw/usnic/usnic_fwd.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_fwd.h b/drivers/infiniband/hw/usnic/usnic_fwd.h
new file mode 100644
index 000000000000..93713a2230b3
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_fwd.h
@@ -0,0 +1,113 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef USNIC_FWD_H_
+#define USNIC_FWD_H_
+
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/in.h>
+
+#include "usnic_abi.h"
+#include "usnic_common_pkt_hdr.h"
+#include "vnic_devcmd.h"
+
+struct usnic_fwd_dev {
+ struct pci_dev *pdev;
+ struct net_device *netdev;
+ spinlock_t lock;
+ /*
+ * The following fields can be read directly off the device.
+ * However, they should be set by a accessor function, except name,
+ * which cannot be changed.
+ */
+ bool link_up;
+ char mac[ETH_ALEN];
+ unsigned int mtu;
+ __be32 inaddr;
+ char name[IFNAMSIZ+1];
+};
+
+struct usnic_fwd_flow {
+ uint32_t flow_id;
+ struct usnic_fwd_dev *ufdev;
+ unsigned int vnic_idx;
+};
+
+struct usnic_filter_action {
+ int vnic_idx;
+ struct filter_action action;
+};
+
+struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev);
+void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev);
+
+void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]);
+int usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr);
+void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev);
+void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev);
+void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev);
+void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu);
+
+/*
+ * Allocate a flow on this forwarding device. Whoever calls this function,
+ * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or
+ * NETDEV_DOWN is seen, flow will no longer function and must be
+ * immediately freed by calling usnic_dealloc_flow.
+ */
+struct usnic_fwd_flow*
+usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter,
+ struct usnic_filter_action *action);
+int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow);
+int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
+int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
+
+static inline void usnic_fwd_init_usnic_filter(struct filter *filter,
+ uint32_t usnic_id)
+{
+ 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 = usnic_id;
+}
+
+static inline void usnic_fwd_init_udp_filter(struct filter *filter,
+ uint32_t daddr, uint16_t dport)
+{
+ filter->type = FILTER_IPV4_5TUPLE;
+ filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO;
+ filter->u.ipv4.protocol = PROTO_UDP;
+
+ if (daddr) {
+ filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD;
+ filter->u.ipv4.dst_addr = daddr;
+ }
+
+ if (dport) {
+ filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT;
+ filter->u.ipv4.dst_port = dport;
+ }
+}
+
+#endif /* !USNIC_FWD_H_ */