blob: 97e09a880693abe47b4fb37b017ed87fb3ea2de1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2017 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*/
#ifndef BNXT_TC_H
#define BNXT_TC_H
#ifdef CONFIG_BNXT_FLOWER_OFFLOAD
#include <net/ip_tunnels.h>
/* Structs used for storing the filter/actions of the TC cmd.
*/
struct bnxt_tc_l2_key {
u8 dmac[ETH_ALEN];
u8 smac[ETH_ALEN];
__be16 inner_vlan_tpid;
__be16 inner_vlan_tci;
__be16 ether_type;
u8 num_vlans;
};
struct bnxt_tc_l3_key {
union {
struct {
struct in_addr daddr;
struct in_addr saddr;
} ipv4;
struct {
struct in6_addr daddr;
struct in6_addr saddr;
} ipv6;
};
};
struct bnxt_tc_l4_key {
u8 ip_proto;
union {
struct {
__be16 sport;
__be16 dport;
} ports;
struct {
u8 type;
u8 code;
} icmp;
};
};
struct bnxt_tc_tunnel_key {
struct bnxt_tc_l2_key l2;
struct bnxt_tc_l3_key l3;
struct bnxt_tc_l4_key l4;
__be32 id;
};
struct bnxt_tc_actions {
u32 flags;
#define BNXT_TC_ACTION_FLAG_FWD BIT(0)
#define BNXT_TC_ACTION_FLAG_FWD_VXLAN BIT(1)
#define BNXT_TC_ACTION_FLAG_PUSH_VLAN BIT(3)
#define BNXT_TC_ACTION_FLAG_POP_VLAN BIT(4)
#define BNXT_TC_ACTION_FLAG_DROP BIT(5)
#define BNXT_TC_ACTION_FLAG_TUNNEL_ENCAP BIT(6)
#define BNXT_TC_ACTION_FLAG_TUNNEL_DECAP BIT(7)
u16 dst_fid;
struct net_device *dst_dev;
__be16 push_vlan_tpid;
__be16 push_vlan_tci;
/* tunnel encap */
struct ip_tunnel_key tun_encap_key;
};
struct bnxt_tc_flow {
u32 flags;
#define BNXT_TC_FLOW_FLAGS_ETH_ADDRS BIT(1)
#define BNXT_TC_FLOW_FLAGS_IPV4_ADDRS BIT(2)
#define BNXT_TC_FLOW_FLAGS_IPV6_ADDRS BIT(3)
#define BNXT_TC_FLOW_FLAGS_PORTS BIT(4)
#define BNXT_TC_FLOW_FLAGS_ICMP BIT(5)
#define BNXT_TC_FLOW_FLAGS_TUNL_ETH_ADDRS BIT(6)
#define BNXT_TC_FLOW_FLAGS_TUNL_IPV4_ADDRS BIT(7)
#define BNXT_TC_FLOW_FLAGS_TUNL_IPV6_ADDRS BIT(8)
#define BNXT_TC_FLOW_FLAGS_TUNL_PORTS BIT(9)
#define BNXT_TC_FLOW_FLAGS_TUNL_ID BIT(10)
#define BNXT_TC_FLOW_FLAGS_TUNNEL (BNXT_TC_FLOW_FLAGS_TUNL_ETH_ADDRS | \
BNXT_TC_FLOW_FLAGS_TUNL_IPV4_ADDRS | \
BNXT_TC_FLOW_FLAGS_TUNL_IPV6_ADDRS |\
BNXT_TC_FLOW_FLAGS_TUNL_PORTS |\
BNXT_TC_FLOW_FLAGS_TUNL_ID)
/* flow applicable to pkts ingressing on this fid */
u16 src_fid;
struct bnxt_tc_l2_key l2_key;
struct bnxt_tc_l2_key l2_mask;
struct bnxt_tc_l3_key l3_key;
struct bnxt_tc_l3_key l3_mask;
struct bnxt_tc_l4_key l4_key;
struct bnxt_tc_l4_key l4_mask;
struct ip_tunnel_key tun_key;
struct ip_tunnel_key tun_mask;
struct bnxt_tc_actions actions;
/* updated stats accounting for hw-counter wrap-around */
struct bnxt_tc_flow_stats stats;
/* previous snap-shot of stats */
struct bnxt_tc_flow_stats prev_stats;
unsigned long lastused; /* jiffies */
/* for calculating delta from prev_stats and
* updating prev_stats atomically.
*/
spinlock_t stats_lock;
};
/* Tunnel encap/decap hash table
* This table is used to maintain a list of flows that use
* the same tunnel encap/decap params (ip_daddrs, vni, udp_dport)
* and the FW returned handle.
* A separate table is maintained for encap and decap
*/
struct bnxt_tc_tunnel_node {
struct ip_tunnel_key key;
struct rhash_head node;
/* tunnel l2 info */
struct bnxt_tc_l2_key l2_info;
#define INVALID_TUNNEL_HANDLE cpu_to_le32(0xffffffff)
/* tunnel handle returned by FW */
__le32 tunnel_handle;
u32 refcount;
struct rcu_head rcu;
};
/* L2 hash table
* The same data-struct is used for L2-flow table and L2-tunnel table.
* The L2 part of a flow or tunnel is stored in a hash table.
* A flow that shares the same L2 key/mask with an
* already existing flow/tunnel must refer to it's flow handle or
* decap_filter_id respectively.
*/
struct bnxt_tc_l2_node {
/* hash key: first 16b of key */
#define BNXT_TC_L2_KEY_LEN 16
struct bnxt_tc_l2_key key;
struct rhash_head node;
/* a linked list of flows that share the same l2 key */
struct list_head common_l2_flows;
/* number of flows/tunnels sharing the l2 key */
u16 refcount;
struct rcu_head rcu;
};
struct bnxt_tc_flow_node {
/* hash key: provided by TC */
unsigned long cookie;
struct rhash_head node;
struct bnxt_tc_flow flow;
__le16 flow_handle;
/* L2 node in l2 hashtable that shares flow's l2 key */
struct bnxt_tc_l2_node *l2_node;
/* for the shared_flows list maintained in l2_node */
struct list_head l2_list_node;
/* tunnel encap related */
struct bnxt_tc_tunnel_node *encap_node;
/* tunnel decap related */
struct bnxt_tc_tunnel_node *decap_node;
/* L2 node in tunnel-l2 hashtable that shares flow's tunnel l2 key */
struct bnxt_tc_l2_node *decap_l2_node;
/* for the shared_flows list maintained in tunnel decap l2_node */
struct list_head decap_l2_list_node;
struct rcu_head rcu;
};
int bnxt_tc_setup_flower(struct bnxt *bp, u16 src_fid,
struct tc_cls_flower_offload *cls_flower);
int bnxt_init_tc(struct bnxt *bp);
void bnxt_shutdown_tc(struct bnxt *bp);
void bnxt_tc_flow_stats_work(struct bnxt *bp);
static inline bool bnxt_tc_flower_enabled(struct bnxt *bp)
{
return bp->tc_info && bp->tc_info->enabled;
}
#else /* CONFIG_BNXT_FLOWER_OFFLOAD */
static inline int bnxt_tc_setup_flower(struct bnxt *bp, u16 src_fid,
struct tc_cls_flower_offload *cls_flower)
{
return -EOPNOTSUPP;
}
static inline int bnxt_init_tc(struct bnxt *bp)
{
return 0;
}
static inline void bnxt_shutdown_tc(struct bnxt *bp)
{
}
static inline void bnxt_tc_flow_stats_work(struct bnxt *bp)
{
}
static inline bool bnxt_tc_flower_enabled(struct bnxt *bp)
{
return false;
}
#endif /* CONFIG_BNXT_FLOWER_OFFLOAD */
#endif /* BNXT_TC_H */
|
