Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / infiniband / hw / usnic / usnic_fwd.h

diff --git a/kernel/drivers/infiniband/hw/usnic/usnic_fwd.h b/kernel/drivers/infiniband/hw/usnic/usnic_fwd.h
new file mode 100644 (file)
index 0000000..93713a2
--- /dev/null
+++ b/kernel/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_ */