cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

usnic_fwd.h (4285B)

      1/*
      2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
      3 *
      4 * This software is available to you under a choice of one of two
      5 * licenses.  You may choose to be licensed under the terms of the GNU
      6 * General Public License (GPL) Version 2, available from the file
      7 * COPYING in the main directory of this source tree, or the
      8 * BSD license below:
      9 *
     10 *     Redistribution and use in source and binary forms, with or
     11 *     without modification, are permitted provided that the following
     12 *     conditions are met:
     13 *
     14 *      - Redistributions of source code must retain the above
     15 *        copyright notice, this list of conditions and the following
     16 *        disclaimer.
     17 *
     18 *      - Redistributions in binary form must reproduce the above
     19 *        copyright notice, this list of conditions and the following
     20 *        disclaimer in the documentation and/or other materials
     21 *        provided with the distribution.
     22 *
     23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     30 * SOFTWARE.
     31 *
     32 */
     33
     34#ifndef USNIC_FWD_H_
     35#define USNIC_FWD_H_
     36
     37#include <linux/if.h>
     38#include <linux/netdevice.h>
     39#include <linux/if_ether.h>
     40#include <linux/pci.h>
     41#include <linux/in.h>
     42
     43#include "usnic_abi.h"
     44#include "usnic_common_pkt_hdr.h"
     45#include "vnic_devcmd.h"
     46
     47struct usnic_fwd_dev {
     48	struct pci_dev			*pdev;
     49	struct net_device		*netdev;
     50	spinlock_t			lock;
     51	/*
     52	 * The following fields can be read directly off the device.
     53	 * However, they should be set by a accessor function, except name,
     54	 * which cannot be changed.
     55	 */
     56	bool				link_up;
     57	char				mac[ETH_ALEN];
     58	unsigned int			mtu;
     59	__be32				inaddr;
     60	char				name[IFNAMSIZ];
     61};
     62
     63struct usnic_fwd_flow {
     64	uint32_t			flow_id;
     65	struct usnic_fwd_dev		*ufdev;
     66	unsigned int			vnic_idx;
     67};
     68
     69struct usnic_filter_action {
     70	int				vnic_idx;
     71	struct filter_action		action;
     72};
     73
     74struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev);
     75void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev);
     76
     77void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, const char mac[ETH_ALEN]);
     78void usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr);
     79void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev);
     80void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev);
     81void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev);
     82void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu);
     83
     84/*
     85 * Allocate a flow on this forwarding device. Whoever calls this function,
     86 * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or
     87 * NETDEV_DOWN is seen, flow will no longer function and must be
     88 * immediately freed by calling usnic_dealloc_flow.
     89 */
     90struct usnic_fwd_flow*
     91usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter,
     92				struct usnic_filter_action *action);
     93int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow);
     94int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
     95int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
     96
     97static inline void usnic_fwd_init_usnic_filter(struct filter *filter,
     98						uint32_t usnic_id)
     99{
    100	filter->type = FILTER_USNIC_ID;
    101	filter->u.usnic.ethtype = ETH_P_IBOE;
    102	filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE |
    103				FILTER_FIELD_USNIC_ID |
    104				FILTER_FIELD_USNIC_PROTO;
    105	filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER <<
    106					 USNIC_ROCE_GRH_VER_SHIFT) |
    107					 USNIC_PROTO_VER;
    108	filter->u.usnic.usnic_id = usnic_id;
    109}
    110
    111static inline void usnic_fwd_init_udp_filter(struct filter *filter,
    112						uint32_t daddr, uint16_t dport)
    113{
    114	filter->type = FILTER_IPV4_5TUPLE;
    115	filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO;
    116	filter->u.ipv4.protocol = PROTO_UDP;
    117
    118	if (daddr) {
    119		filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD;
    120		filter->u.ipv4.dst_addr = daddr;
    121	}
    122
    123	if (dport) {
    124		filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT;
    125		filter->u.ipv4.dst_port = dport;
    126	}
    127}
    128
    129#endif /* !USNIC_FWD_H_ */