1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This software is available to you under a choice of one of two
5*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
6*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
7*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the
8*4882a593Smuzhiyun * BSD license below:
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or
11*4882a593Smuzhiyun * without modification, are permitted provided that the following
12*4882a593Smuzhiyun * conditions are met:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * - Redistributions of source code must retain the above
15*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
16*4882a593Smuzhiyun * disclaimer.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above
19*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
20*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials
21*4882a593Smuzhiyun * provided with the distribution.
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30*4882a593Smuzhiyun * SOFTWARE.
31*4882a593Smuzhiyun *
32*4882a593Smuzhiyun */
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun #ifndef USNIC_FWD_H_
35*4882a593Smuzhiyun #define USNIC_FWD_H_
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #include <linux/if.h>
38*4882a593Smuzhiyun #include <linux/netdevice.h>
39*4882a593Smuzhiyun #include <linux/if_ether.h>
40*4882a593Smuzhiyun #include <linux/pci.h>
41*4882a593Smuzhiyun #include <linux/in.h>
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #include "usnic_abi.h"
44*4882a593Smuzhiyun #include "usnic_common_pkt_hdr.h"
45*4882a593Smuzhiyun #include "vnic_devcmd.h"
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun struct usnic_fwd_dev {
48*4882a593Smuzhiyun struct pci_dev *pdev;
49*4882a593Smuzhiyun struct net_device *netdev;
50*4882a593Smuzhiyun spinlock_t lock;
51*4882a593Smuzhiyun /*
52*4882a593Smuzhiyun * The following fields can be read directly off the device.
53*4882a593Smuzhiyun * However, they should be set by a accessor function, except name,
54*4882a593Smuzhiyun * which cannot be changed.
55*4882a593Smuzhiyun */
56*4882a593Smuzhiyun bool link_up;
57*4882a593Smuzhiyun char mac[ETH_ALEN];
58*4882a593Smuzhiyun unsigned int mtu;
59*4882a593Smuzhiyun __be32 inaddr;
60*4882a593Smuzhiyun char name[IFNAMSIZ];
61*4882a593Smuzhiyun };
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun struct usnic_fwd_flow {
64*4882a593Smuzhiyun uint32_t flow_id;
65*4882a593Smuzhiyun struct usnic_fwd_dev *ufdev;
66*4882a593Smuzhiyun unsigned int vnic_idx;
67*4882a593Smuzhiyun };
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun struct usnic_filter_action {
70*4882a593Smuzhiyun int vnic_idx;
71*4882a593Smuzhiyun struct filter_action action;
72*4882a593Smuzhiyun };
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev);
75*4882a593Smuzhiyun void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev);
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]);
78*4882a593Smuzhiyun void usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr);
79*4882a593Smuzhiyun void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev);
80*4882a593Smuzhiyun void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev);
81*4882a593Smuzhiyun void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev);
82*4882a593Smuzhiyun void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu);
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun /*
85*4882a593Smuzhiyun * Allocate a flow on this forwarding device. Whoever calls this function,
86*4882a593Smuzhiyun * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or
87*4882a593Smuzhiyun * NETDEV_DOWN is seen, flow will no longer function and must be
88*4882a593Smuzhiyun * immediately freed by calling usnic_dealloc_flow.
89*4882a593Smuzhiyun */
90*4882a593Smuzhiyun struct usnic_fwd_flow*
91*4882a593Smuzhiyun usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter,
92*4882a593Smuzhiyun struct usnic_filter_action *action);
93*4882a593Smuzhiyun int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow);
94*4882a593Smuzhiyun int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
95*4882a593Smuzhiyun int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx);
96*4882a593Smuzhiyun
usnic_fwd_init_usnic_filter(struct filter * filter,uint32_t usnic_id)97*4882a593Smuzhiyun static inline void usnic_fwd_init_usnic_filter(struct filter *filter,
98*4882a593Smuzhiyun uint32_t usnic_id)
99*4882a593Smuzhiyun {
100*4882a593Smuzhiyun filter->type = FILTER_USNIC_ID;
101*4882a593Smuzhiyun filter->u.usnic.ethtype = ETH_P_IBOE;
102*4882a593Smuzhiyun filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE |
103*4882a593Smuzhiyun FILTER_FIELD_USNIC_ID |
104*4882a593Smuzhiyun FILTER_FIELD_USNIC_PROTO;
105*4882a593Smuzhiyun filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER <<
106*4882a593Smuzhiyun USNIC_ROCE_GRH_VER_SHIFT) |
107*4882a593Smuzhiyun USNIC_PROTO_VER;
108*4882a593Smuzhiyun filter->u.usnic.usnic_id = usnic_id;
109*4882a593Smuzhiyun }
110*4882a593Smuzhiyun
usnic_fwd_init_udp_filter(struct filter * filter,uint32_t daddr,uint16_t dport)111*4882a593Smuzhiyun static inline void usnic_fwd_init_udp_filter(struct filter *filter,
112*4882a593Smuzhiyun uint32_t daddr, uint16_t dport)
113*4882a593Smuzhiyun {
114*4882a593Smuzhiyun filter->type = FILTER_IPV4_5TUPLE;
115*4882a593Smuzhiyun filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO;
116*4882a593Smuzhiyun filter->u.ipv4.protocol = PROTO_UDP;
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun if (daddr) {
119*4882a593Smuzhiyun filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD;
120*4882a593Smuzhiyun filter->u.ipv4.dst_addr = daddr;
121*4882a593Smuzhiyun }
122*4882a593Smuzhiyun
123*4882a593Smuzhiyun if (dport) {
124*4882a593Smuzhiyun filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT;
125*4882a593Smuzhiyun filter->u.ipv4.dst_port = dport;
126*4882a593Smuzhiyun }
127*4882a593Smuzhiyun }
128*4882a593Smuzhiyun
129*4882a593Smuzhiyun #endif /* !USNIC_FWD_H_ */
130