130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*
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* Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef USNIC_FWD_H_
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#define USNIC_FWD_H_
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#include <linux/if.h>
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#include <linux/netdevice.h>
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#include <linux/if_ether.h>
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#include <linux/pci.h>
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#include <linux/in.h>
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#include "usnic_abi.h"
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#include "usnic_common_pkt_hdr.h"
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#include "vnic_devcmd.h"
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struct usnic_fwd_dev {
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struct pci_dev *pdev;
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struct net_device *netdev;
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spinlock_t lock;
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/*
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* The following fields can be read directly off the device.
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* However, they should be set by a accessor function, except name,
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* which cannot be changed.
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*/
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bool link_up;
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char mac[ETH_ALEN];
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unsigned int mtu;
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__be32 inaddr;
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char name[IFNAMSIZ];
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};
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struct usnic_fwd_flow {
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uint32_t flow_id;
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struct usnic_fwd_dev *ufdev;
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unsigned int vnic_idx;
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};
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struct usnic_filter_action {
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int vnic_idx;
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struct filter_action action;
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};
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struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev);
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void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev);
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void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]);
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void usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr);
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void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev);
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void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev);
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void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev);
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void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu);
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/*
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* Allocate a flow on this forwarding device. Whoever calls this function,
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* must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or
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* NETDEV_DOWN is seen, flow will no longer function and must be
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* immediately freed by calling usnic_dealloc_flow.
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*/
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struct usnic_fwd_flow*
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usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter,
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struct usnic_filter_action *action);
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int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow);
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int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
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int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
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static inline void usnic_fwd_init_usnic_filter(struct filter *filter,
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uint32_t usnic_id)
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{
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filter->type = FILTER_USNIC_ID;
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filter->u.usnic.ethtype = ETH_P_IBOE;
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filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE |
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FILTER_FIELD_USNIC_ID |
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FILTER_FIELD_USNIC_PROTO;
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filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER <<
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USNIC_ROCE_GRH_VER_SHIFT) |
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USNIC_PROTO_VER;
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filter->u.usnic.usnic_id = usnic_id;
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}
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static inline void usnic_fwd_init_udp_filter(struct filter *filter,
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uint32_t daddr, uint16_t dport)
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{
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filter->type = FILTER_IPV4_5TUPLE;
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filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO;
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filter->u.ipv4.protocol = PROTO_UDP;
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if (daddr) {
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filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD;
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filter->u.ipv4.dst_addr = daddr;
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}
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if (dport) {
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filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT;
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filter->u.ipv4.dst_port = dport;
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}
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}
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#endif /* !USNIC_FWD_H_ */
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