2 * Copyright (c) 2017-2018 Cavium, Inc.
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6 * modification, are permitted provided that the following conditions
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32 #ifndef __TCP_COMMON__
33 #define __TCP_COMMON__
34 /********************/
35 /* TCP FW CONSTANTS */
36 /********************/
38 #define TCP_INVALID_TIMEOUT_VAL -1
42 * OOO opaque data received from LL2
46 __le32 cid /* connection ID */;
47 u8 drop_isle /* isle number of the first isle to drop */;
48 u8 drop_size /* number of isles to drop */;
49 u8 ooo_opcode /* (use enum tcp_seg_placement_event) */;
50 u8 ooo_isle /* OOO isle number to add the packet to */;
55 * tcp connect mode enum
66 * tcp function init parameters
68 struct tcp_init_params
70 __le32 two_msl_timer /* 2MSL (used for TIME_WAIT state) timeout value */;
71 __le16 tx_sws_timer /* Transmission silly window syndrom timeout value */;
72 u8 maxFinRT /* Minimum Fin RT */;
89 * tcp offload parameters
91 struct tcp_offload_params
93 __le16 local_mac_addr_lo;
94 __le16 local_mac_addr_mid;
95 __le16 local_mac_addr_hi;
96 __le16 remote_mac_addr_lo;
97 __le16 remote_mac_addr_mid;
98 __le16 remote_mac_addr_hi;
101 #define TCP_OFFLOAD_PARAMS_TS_EN_MASK 0x1 /* timestamp enable */
102 #define TCP_OFFLOAD_PARAMS_TS_EN_SHIFT 0
103 #define TCP_OFFLOAD_PARAMS_DA_EN_MASK 0x1 /* delayed ack enabled */
104 #define TCP_OFFLOAD_PARAMS_DA_EN_SHIFT 1
105 #define TCP_OFFLOAD_PARAMS_KA_EN_MASK 0x1 /* keep alive enabled */
106 #define TCP_OFFLOAD_PARAMS_KA_EN_SHIFT 2
107 #define TCP_OFFLOAD_PARAMS_NAGLE_EN_MASK 0x1 /* nagle algorithm enabled */
108 #define TCP_OFFLOAD_PARAMS_NAGLE_EN_SHIFT 3
109 #define TCP_OFFLOAD_PARAMS_DA_CNT_EN_MASK 0x1 /* delayed ack counter enabled */
110 #define TCP_OFFLOAD_PARAMS_DA_CNT_EN_SHIFT 4
111 #define TCP_OFFLOAD_PARAMS_FIN_SENT_MASK 0x1 /* fin already sent to far end */
112 #define TCP_OFFLOAD_PARAMS_FIN_SENT_SHIFT 5
113 #define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_MASK 0x1 /* fin received */
114 #define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_SHIFT 6
115 #define TCP_OFFLOAD_PARAMS_RESERVED0_MASK 0x1
116 #define TCP_OFFLOAD_PARAMS_RESERVED0_SHIFT 7
125 __le16 mss /* the mss derived from remote mss and local mtu, ipVersion options and tags */;
127 u8 connect_mode /* TCP connect mode: use enum tcp_connect_mode */;
128 __le16 srtt /* in ms */;
129 __le32 cwnd /* absolute congestion window */;
138 __le32 snd_wnd /* absolute send window (not scaled) */;
139 __le32 rcv_wnd /* absolute receive window (not scaled) */;
140 __le32 snd_wl1 /* the segment sequence number used for the last window update */;
141 __le32 ts_recent /* The timestamp value to send in the next ACK */;
142 __le32 ts_recent_age /* The length of time, in ms, since the most recent timestamp was received */;
143 __le32 total_rt /* The total time, in ms, that has been spent retransmitting the current TCP segment */;
144 __le32 ka_timeout_delta /* The time remaining, in clock ticks, until the next keepalive timeout. A value of -1 indicates that the keepalive timer was not running when the connection was offloaded. */;
145 __le32 rt_timeout_delta /* The time remaining, in clock ticks, until the next retransmit timeout. A value of -1 indicates that the retransmit timer was not running when the connection was offloaded. */;
146 u8 dup_ack_cnt /* The number of ACKs that have been accepted for the same sequence number */;
147 u8 snd_wnd_probe_cnt /* The current send window probe round */;
148 u8 ka_probe_cnt /* the number of keepalive probes that have been sent that have not received a response */;
149 u8 rt_cnt /* The number of retransmits that have been sent */;
150 __le16 rtt_var /* in ms */;
151 __le16 fw_internal /* fw internal use - initialize value = 0 */;
152 __le32 ka_timeout /* This member specifies, in ms, the timeout interval for inactivity before sending a keepalive probe */;
153 __le32 ka_interval /* This member specifies, in ms, the timeout after which to retransmit a keepalive frame if no response is received to a keepalive probe */;
154 __le32 max_rt_time /* This member specifies, in ms, the maximum time that the offload target should spend retransmitting a segment */;
155 __le32 initial_rcv_wnd /* Initial receive window */;
157 u8 ack_frequency /* delayed ack counter threshold */;
158 __le16 da_timeout_value /* delayed ack timeout value in ms */;
164 * tcp offload parameters
166 struct tcp_offload_params_opt2
168 __le16 local_mac_addr_lo;
169 __le16 local_mac_addr_mid;
170 __le16 local_mac_addr_hi;
171 __le16 remote_mac_addr_lo;
172 __le16 remote_mac_addr_mid;
173 __le16 remote_mac_addr_hi;
176 #define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_MASK 0x1 /* timestamp enable */
177 #define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_SHIFT 0
178 #define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_MASK 0x1 /* delayed ack enabled */
179 #define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_SHIFT 1
180 #define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_MASK 0x1 /* keep alive enabled */
181 #define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_SHIFT 2
182 #define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_MASK 0x1F
183 #define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_SHIFT 3
192 __le16 mss /* the mss derived from remote mss and local mtu, ipVersion options and tags */;
194 u8 connect_mode /* TCP connect mode: use enum tcp_connect_mode */;
195 __le16 syn_ip_payload_length /* length of Tcp header in SYN packet - relevent for passive mode */;
196 __le32 syn_phy_addr_lo /* physical address (low) of SYN buffer - relevent for passive mode */;
197 __le32 syn_phy_addr_hi /* physical address (high) of SYN buffer - relevent for passive mode */;
198 __le32 reserved1[22];
205 enum tcp_seg_placement_event
208 TCP_EVENT_ADD_NEW_ISLE,
209 TCP_EVENT_ADD_ISLE_RIGHT,
210 TCP_EVENT_ADD_ISLE_LEFT,
212 TCP_EVENT_DELETE_ISLES,
214 MAX_TCP_SEG_PLACEMENT_EVENT
219 * tcp init parameters
221 struct tcp_update_params
224 #define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_MASK 0x1
225 #define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_SHIFT 0
226 #define TCP_UPDATE_PARAMS_MSS_CHANGED_MASK 0x1
227 #define TCP_UPDATE_PARAMS_MSS_CHANGED_SHIFT 1
228 #define TCP_UPDATE_PARAMS_TTL_CHANGED_MASK 0x1
229 #define TCP_UPDATE_PARAMS_TTL_CHANGED_SHIFT 2
230 #define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_MASK 0x1
231 #define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_SHIFT 3
232 #define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_MASK 0x1
233 #define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_SHIFT 4
234 #define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_MASK 0x1
235 #define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_SHIFT 5
236 #define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_MASK 0x1
237 #define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_SHIFT 6
238 #define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_MASK 0x1
239 #define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_SHIFT 7
240 #define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_MASK 0x1
241 #define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_SHIFT 8
242 #define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_MASK 0x1
243 #define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_SHIFT 9
244 #define TCP_UPDATE_PARAMS_KA_EN_CHANGED_MASK 0x1
245 #define TCP_UPDATE_PARAMS_KA_EN_CHANGED_SHIFT 10
246 #define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_MASK 0x1
247 #define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_SHIFT 11
248 #define TCP_UPDATE_PARAMS_KA_EN_MASK 0x1
249 #define TCP_UPDATE_PARAMS_KA_EN_SHIFT 12
250 #define TCP_UPDATE_PARAMS_NAGLE_EN_MASK 0x1
251 #define TCP_UPDATE_PARAMS_NAGLE_EN_SHIFT 13
252 #define TCP_UPDATE_PARAMS_KA_RESTART_MASK 0x1
253 #define TCP_UPDATE_PARAMS_KA_RESTART_SHIFT 14
254 #define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_MASK 0x1
255 #define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_SHIFT 15
256 __le16 remote_mac_addr_lo;
257 __le16 remote_mac_addr_mid;
258 __le16 remote_mac_addr_hi;
266 __le32 initial_rcv_wnd;
273 * toe upload parameters
275 struct tcp_upload_params
281 __le32 snd_wnd /* absolute send window (not scaled) */;
282 __le32 rcv_wnd /* absolute receive window (not scaled) */;
283 __le32 snd_wl1 /* the segment sequence number used for the last window update */;
284 __le32 cwnd /* absolute congestion window */;
286 __le16 srtt /* in ms */;
287 __le16 rtt_var /* in ms */;
288 __le32 ts_time /* The current value of the adjusted timestamp */;
289 __le32 ts_recent /* The timestamp value to send in the next ACK */;
290 __le32 ts_recent_age /* The length of time, in ms, since the most recent timestamp was received */;
291 __le32 total_rt /* The total time, in ms, that has been spent retransmitting the current TCP segment */;
292 __le32 ka_timeout_delta /* The time remaining, in clock ticks, until the next keepalive timeout. A value of -1 indicates that the keepalive timer was not running when the connection was offloaded. */;
293 __le32 rt_timeout_delta /* The time remaining, in clock ticks, until the next retransmit timeout. A value of -1 indicates that the retransmit timer was not running when the connection was offloaded. */;
294 u8 dup_ack_cnt /* The number of ACKs that have been accepted for the same sequence number */;
295 u8 snd_wnd_probe_cnt /* The current send window probe round */;
296 u8 ka_probe_cnt /* the number of keepalive probes that have been sent that have not received a response */;
297 u8 rt_cnt /* The number of retransmits that have been sent */;
301 #endif /* __TCP_COMMON__ */