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-rw-r--r--drivers/infiniband/hw/usnic/usnic_fwd.h129
1 files changed, 129 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 000000000..a91200886
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_fwd.h
@@ -0,0 +1,129 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef USNIC_FWD_H_
+#define USNIC_FWD_H_
+
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/if_ether.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];
+};
+
+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, const char mac[ETH_ALEN]);
+void 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 = ETH_P_IBOE;
+ 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_ */