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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 two5 * licenses. You may choose to be licensed under the terms of the GNU6 * General Public License (GPL) Version 2, available from the file7 * COPYING in the main directory of this source tree, or the8 * BSD license below:9 *10 * Redistribution and use in source and binary forms, with or11 * without modification, are permitted provided that the following12 * conditions are met:13 *14 * - Redistributions of source code must retain the above15 * copyright notice, this list of conditions and the following16 * disclaimer.17 *18 * - Redistributions in binary form must reproduce the above19 * copyright notice, this list of conditions and the following20 * disclaimer in the documentation and/or other materials21 * 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 OF25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE30 * 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 or87 * NETDEV_DOWN is seen, flow will no longer function and must be88 * 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_ */130