diff options
Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_fwd.h')
| -rw-r--r-- | drivers/infiniband/hw/usnic/usnic_fwd.h | 129 |
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..f0b71d593 --- /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, 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_ */ |