[linux-2.6-block.git] / include / linux / qed / tcp_common.h

/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and /or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __TCP_COMMON__
#define __TCP_COMMON__

#define TCP_INVALID_TIMEOUT_VAL -1

struct ooo_opaque {
	__le32 cid;
	u8 drop_isle;
	u8 drop_size;
	u8 ooo_opcode;
	u8 ooo_isle;
};

enum tcp_connect_mode {
	TCP_CONNECT_ACTIVE,
	TCP_CONNECT_PASSIVE,
	MAX_TCP_CONNECT_MODE
};

struct tcp_init_params {
	__le32 two_msl_timer;
	__le16 tx_sws_timer;
	u8 maxfinrt;
	u8 reserved[9];
};

enum tcp_ip_version {
	TCP_IPV4,
	TCP_IPV6,
	MAX_TCP_IP_VERSION
};

struct tcp_offload_params {
	__le16 local_mac_addr_lo;
	__le16 local_mac_addr_mid;
	__le16 local_mac_addr_hi;
	__le16 remote_mac_addr_lo;
	__le16 remote_mac_addr_mid;
	__le16 remote_mac_addr_hi;
	__le16 vlan_id;
	u8 flags;
#define TCP_OFFLOAD_PARAMS_TS_EN_MASK         0x1
#define TCP_OFFLOAD_PARAMS_TS_EN_SHIFT        0
#define TCP_OFFLOAD_PARAMS_DA_EN_MASK         0x1
#define TCP_OFFLOAD_PARAMS_DA_EN_SHIFT        1
#define TCP_OFFLOAD_PARAMS_KA_EN_MASK         0x1
#define TCP_OFFLOAD_PARAMS_KA_EN_SHIFT        2
#define TCP_OFFLOAD_PARAMS_NAGLE_EN_MASK      0x1
#define TCP_OFFLOAD_PARAMS_NAGLE_EN_SHIFT     3
#define TCP_OFFLOAD_PARAMS_DA_CNT_EN_MASK     0x1
#define TCP_OFFLOAD_PARAMS_DA_CNT_EN_SHIFT    4
#define TCP_OFFLOAD_PARAMS_FIN_SENT_MASK      0x1
#define TCP_OFFLOAD_PARAMS_FIN_SENT_SHIFT     5
#define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_MASK  0x1
#define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_SHIFT 6
#define TCP_OFFLOAD_PARAMS_RESERVED0_MASK     0x1
#define TCP_OFFLOAD_PARAMS_RESERVED0_SHIFT    7
	u8 ip_version;
	__le32 remote_ip[4];
	__le32 local_ip[4];
	__le32 flow_label;
	u8 ttl;
	u8 tos_or_tc;
	__le16 remote_port;
	__le16 local_port;
	__le16 mss;
	u8 rcv_wnd_scale;
	u8 connect_mode;
	__le16 srtt;
	__le32 cwnd;
	__le32 ss_thresh;
	__le16 reserved1;
	u8 ka_max_probe_cnt;
	u8 dup_ack_theshold;
	__le32 rcv_next;
	__le32 snd_una;
	__le32 snd_next;
	__le32 snd_max;
	__le32 snd_wnd;
	__le32 rcv_wnd;
	__le32 snd_wl1;
	__le32 ts_time;
	__le32 ts_recent;
	__le32 ts_recent_age;
	__le32 total_rt;
	__le32 ka_timeout_delta;
	__le32 rt_timeout_delta;
	u8 dup_ack_cnt;
	u8 snd_wnd_probe_cnt;
	u8 ka_probe_cnt;
	u8 rt_cnt;
	__le16 rtt_var;
	__le16 reserved2;
	__le32 ka_timeout;
	__le32 ka_interval;
	__le32 max_rt_time;
	__le32 initial_rcv_wnd;
	u8 snd_wnd_scale;
	u8 ack_frequency;
	__le16 da_timeout_value;
	__le32 ts_ticks_per_second;
};

struct tcp_offload_params_opt2 {
	__le16 local_mac_addr_lo;
	__le16 local_mac_addr_mid;
	__le16 local_mac_addr_hi;
	__le16 remote_mac_addr_lo;
	__le16 remote_mac_addr_mid;
	__le16 remote_mac_addr_hi;
	__le16 vlan_id;
	u8 flags;
#define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_MASK      0x1
#define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_SHIFT     0
#define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_MASK      0x1
#define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_SHIFT     1
#define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_MASK      0x1
#define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_SHIFT     2
#define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_MASK  0x1F
#define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_SHIFT 3
	u8 ip_version;
	__le32 remote_ip[4];
	__le32 local_ip[4];
	__le32 flow_label;
	u8 ttl;
	u8 tos_or_tc;
	__le16 remote_port;
	__le16 local_port;
	__le16 mss;
	u8 rcv_wnd_scale;
	u8 connect_mode;
	__le16 syn_ip_payload_length;
	__le32 syn_phy_addr_lo;
	__le32 syn_phy_addr_hi;
	__le32 reserved1[22];
};

enum tcp_seg_placement_event {
	TCP_EVENT_ADD_PEN,
	TCP_EVENT_ADD_NEW_ISLE,
	TCP_EVENT_ADD_ISLE_RIGHT,
	TCP_EVENT_ADD_ISLE_LEFT,
	TCP_EVENT_JOIN,
	TCP_EVENT_NOP,
	MAX_TCP_SEG_PLACEMENT_EVENT
};

struct tcp_update_params {
	__le16 flags;
#define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_MASK   0x1
#define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_SHIFT  0
#define TCP_UPDATE_PARAMS_MSS_CHANGED_MASK               0x1
#define TCP_UPDATE_PARAMS_MSS_CHANGED_SHIFT              1
#define TCP_UPDATE_PARAMS_TTL_CHANGED_MASK               0x1
#define TCP_UPDATE_PARAMS_TTL_CHANGED_SHIFT              2
#define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_MASK         0x1
#define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_SHIFT        3
#define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_MASK        0x1
#define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_SHIFT       4
#define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_MASK       0x1
#define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_SHIFT      5
#define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_MASK       0x1
#define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_SHIFT      6
#define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_MASK        0x1
#define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_SHIFT       7
#define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_MASK   0x1
#define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_SHIFT  8
#define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_MASK  0x1
#define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_SHIFT 9
#define TCP_UPDATE_PARAMS_KA_EN_CHANGED_MASK             0x1
#define TCP_UPDATE_PARAMS_KA_EN_CHANGED_SHIFT            10
#define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_MASK          0x1
#define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_SHIFT         11
#define TCP_UPDATE_PARAMS_KA_EN_MASK                     0x1
#define TCP_UPDATE_PARAMS_KA_EN_SHIFT                    12
#define TCP_UPDATE_PARAMS_NAGLE_EN_MASK                  0x1
#define TCP_UPDATE_PARAMS_NAGLE_EN_SHIFT                 13
#define TCP_UPDATE_PARAMS_KA_RESTART_MASK                0x1
#define TCP_UPDATE_PARAMS_KA_RESTART_SHIFT               14
#define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_MASK        0x1
#define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_SHIFT       15
	__le16 remote_mac_addr_lo;
	__le16 remote_mac_addr_mid;
	__le16 remote_mac_addr_hi;
	__le16 mss;
	u8 ttl;
	u8 tos_or_tc;
	__le32 ka_timeout;
	__le32 ka_interval;
	__le32 max_rt_time;
	__le32 flow_label;
	__le32 initial_rcv_wnd;
	u8 ka_max_probe_cnt;
	u8 reserved1[7];
};

struct tcp_upload_params {
	__le32 rcv_next;
	__le32 snd_una;
	__le32 snd_next;
	__le32 snd_max;
	__le32 snd_wnd;
	__le32 rcv_wnd;
	__le32 snd_wl1;
	__le32 cwnd;
	__le32 ss_thresh;
	__le16 srtt;
	__le16 rtt_var;
	__le32 ts_time;
	__le32 ts_recent;
	__le32 ts_recent_age;
	__le32 total_rt;
	__le32 ka_timeout_delta;
	__le32 rt_timeout_delta;
	u8 dup_ack_cnt;
	u8 snd_wnd_probe_cnt;
	u8 ka_probe_cnt;
	u8 rt_cnt;
	__le32 reserved;
};

#endif /* __TCP_COMMON__ */
Commit	Line	Data
7a9b6b8f	1	/* QLogic qed NIC Driver
e8f1cb50	2	* Copyright (c) 2015-2017 QLogic Corporation
7a9b6b8f	3	*
e8f1cb50 MY	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	* OpenIB.org 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.
7a9b6b8f YM	31	*/
	32
	33	#ifndef __TCP_COMMON__
	34	#define __TCP_COMMON__
	35
	36	#define TCP_INVALID_TIMEOUT_VAL -1
	37
05fafbfb YM	38	struct ooo_opaque {
	39	__le32 cid;
	40	u8 drop_isle;
	41	u8 drop_size;
	42	u8 ooo_opcode;
	43	u8 ooo_isle;
	44	};
	45
7a9b6b8f YM	46	enum tcp_connect_mode {
	47	TCP_CONNECT_ACTIVE,
	48	TCP_CONNECT_PASSIVE,
	49	MAX_TCP_CONNECT_MODE
	50	};
	51
	52	struct tcp_init_params {
05fafbfb	53	__le32 two_msl_timer;
7a9b6b8f	54	__le16 tx_sws_timer;
7a9b6b8f	55	u8 maxfinrt;
05fafbfb	56	u8 reserved[9];
7a9b6b8f YM	57	};
	58
	59	enum tcp_ip_version {
	60	TCP_IPV4,
	61	TCP_IPV6,
	62	MAX_TCP_IP_VERSION
	63	};
	64
	65	struct tcp_offload_params {
	66	__le16 local_mac_addr_lo;
	67	__le16 local_mac_addr_mid;
	68	__le16 local_mac_addr_hi;
	69	__le16 remote_mac_addr_lo;
	70	__le16 remote_mac_addr_mid;
	71	__le16 remote_mac_addr_hi;
	72	__le16 vlan_id;
	73	u8 flags;
	74	#define TCP_OFFLOAD_PARAMS_TS_EN_MASK 0x1
	75	#define TCP_OFFLOAD_PARAMS_TS_EN_SHIFT 0
	76	#define TCP_OFFLOAD_PARAMS_DA_EN_MASK 0x1
	77	#define TCP_OFFLOAD_PARAMS_DA_EN_SHIFT 1
	78	#define TCP_OFFLOAD_PARAMS_KA_EN_MASK 0x1
	79	#define TCP_OFFLOAD_PARAMS_KA_EN_SHIFT 2
	80	#define TCP_OFFLOAD_PARAMS_NAGLE_EN_MASK 0x1
	81	#define TCP_OFFLOAD_PARAMS_NAGLE_EN_SHIFT 3
	82	#define TCP_OFFLOAD_PARAMS_DA_CNT_EN_MASK 0x1
	83	#define TCP_OFFLOAD_PARAMS_DA_CNT_EN_SHIFT 4
	84	#define TCP_OFFLOAD_PARAMS_FIN_SENT_MASK 0x1
	85	#define TCP_OFFLOAD_PARAMS_FIN_SENT_SHIFT 5
	86	#define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_MASK 0x1
	87	#define TCP_OFFLOAD_PARAMS_FIN_RECEIVED_SHIFT 6
	88	#define TCP_OFFLOAD_PARAMS_RESERVED0_MASK 0x1
	89	#define TCP_OFFLOAD_PARAMS_RESERVED0_SHIFT 7
	90	u8 ip_version;
	91	__le32 remote_ip[4];
	92	__le32 local_ip[4];
	93	__le32 flow_label;
	94	u8 ttl;
	95	u8 tos_or_tc;
	96	__le16 remote_port;
	97	__le16 local_port;
	98	__le16 mss;
	99	u8 rcv_wnd_scale;
	100	u8 connect_mode;
	101	__le16 srtt;
	102	__le32 cwnd;
	103	__le32 ss_thresh;
	104	__le16 reserved1;
	105	u8 ka_max_probe_cnt;
	106	u8 dup_ack_theshold;
	107	__le32 rcv_next;
	108	__le32 snd_una;
	109	__le32 snd_next;
	110	__le32 snd_max;
	111	__le32 snd_wnd;
	112	__le32 rcv_wnd;
	113	__le32 snd_wl1;
	114	__le32 ts_time;
	115	__le32 ts_recent;
	116	__le32 ts_recent_age;
	117	__le32 total_rt;
	118	__le32 ka_timeout_delta;
	119	__le32 rt_timeout_delta;
	120	u8 dup_ack_cnt;
121	u8 snd_wnd_probe_cnt;
122	u8 ka_probe_cnt;
123	u8 rt_cnt;
124	__le16 rtt_var;
125	__le16 reserved2;
126	__le32 ka_timeout;
127	__le32 ka_interval;
128	__le32 max_rt_time;
129	__le32 initial_rcv_wnd;
130	u8 snd_wnd_scale;
131	u8 ack_frequency;
132	__le16 da_timeout_value;
133	__le32 ts_ticks_per_second;
134	};
135
136	struct tcp_offload_params_opt2 {
137	__le16 local_mac_addr_lo;
138	__le16 local_mac_addr_mid;
139	__le16 local_mac_addr_hi;
140	__le16 remote_mac_addr_lo;
141	__le16 remote_mac_addr_mid;
142	__le16 remote_mac_addr_hi;
143	__le16 vlan_id;
144	u8 flags;
145	#define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_MASK 0x1
146	#define TCP_OFFLOAD_PARAMS_OPT2_TS_EN_SHIFT 0
147	#define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_MASK 0x1
148	#define TCP_OFFLOAD_PARAMS_OPT2_DA_EN_SHIFT 1
149	#define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_MASK 0x1
150	#define TCP_OFFLOAD_PARAMS_OPT2_KA_EN_SHIFT 2
151	#define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_MASK 0x1F
152	#define TCP_OFFLOAD_PARAMS_OPT2_RESERVED0_SHIFT 3
153	u8 ip_version;
154	__le32 remote_ip[4];
155	__le32 local_ip[4];
156	__le32 flow_label;
157	u8 ttl;
158	u8 tos_or_tc;
159	__le16 remote_port;
160	__le16 local_port;
161	__le16 mss;
162	u8 rcv_wnd_scale;
163	u8 connect_mode;
164	__le16 syn_ip_payload_length;
165	__le32 syn_phy_addr_lo;
166	__le32 syn_phy_addr_hi;
167	__le32 reserved1[22];
168	};
169
170	enum tcp_seg_placement_event {
171	TCP_EVENT_ADD_PEN,
172	TCP_EVENT_ADD_NEW_ISLE,
173	TCP_EVENT_ADD_ISLE_RIGHT,
174	TCP_EVENT_ADD_ISLE_LEFT,
175	TCP_EVENT_JOIN,
176	TCP_EVENT_NOP,
177	MAX_TCP_SEG_PLACEMENT_EVENT
178	};
179
180	struct tcp_update_params {
181	__le16 flags;
182	#define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_MASK 0x1
183	#define TCP_UPDATE_PARAMS_REMOTE_MAC_ADDR_CHANGED_SHIFT 0
184	#define TCP_UPDATE_PARAMS_MSS_CHANGED_MASK 0x1
185	#define TCP_UPDATE_PARAMS_MSS_CHANGED_SHIFT 1
186	#define TCP_UPDATE_PARAMS_TTL_CHANGED_MASK 0x1
187	#define TCP_UPDATE_PARAMS_TTL_CHANGED_SHIFT 2
188	#define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_MASK 0x1
189	#define TCP_UPDATE_PARAMS_TOS_OR_TC_CHANGED_SHIFT 3
190	#define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_MASK 0x1
191	#define TCP_UPDATE_PARAMS_KA_TIMEOUT_CHANGED_SHIFT 4
192	#define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_MASK 0x1
193	#define TCP_UPDATE_PARAMS_KA_INTERVAL_CHANGED_SHIFT 5
194	#define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_MASK 0x1
195	#define TCP_UPDATE_PARAMS_MAX_RT_TIME_CHANGED_SHIFT 6
196	#define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_MASK 0x1
197	#define TCP_UPDATE_PARAMS_FLOW_LABEL_CHANGED_SHIFT 7
198	#define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_MASK 0x1
199	#define TCP_UPDATE_PARAMS_INITIAL_RCV_WND_CHANGED_SHIFT 8
200	#define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_MASK 0x1
201	#define TCP_UPDATE_PARAMS_KA_MAX_PROBE_CNT_CHANGED_SHIFT 9
202	#define TCP_UPDATE_PARAMS_KA_EN_CHANGED_MASK 0x1
203	#define TCP_UPDATE_PARAMS_KA_EN_CHANGED_SHIFT 10
204	#define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_MASK 0x1
205	#define TCP_UPDATE_PARAMS_NAGLE_EN_CHANGED_SHIFT 11
206	#define TCP_UPDATE_PARAMS_KA_EN_MASK 0x1
207	#define TCP_UPDATE_PARAMS_KA_EN_SHIFT 12
208	#define TCP_UPDATE_PARAMS_NAGLE_EN_MASK 0x1
209	#define TCP_UPDATE_PARAMS_NAGLE_EN_SHIFT 13
210	#define TCP_UPDATE_PARAMS_KA_RESTART_MASK 0x1
211	#define TCP_UPDATE_PARAMS_KA_RESTART_SHIFT 14
212	#define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_MASK 0x1
213	#define TCP_UPDATE_PARAMS_RETRANSMIT_RESTART_SHIFT 15
214	__le16 remote_mac_addr_lo;
215	__le16 remote_mac_addr_mid;
216	__le16 remote_mac_addr_hi;
217	__le16 mss;
218	u8 ttl;
219	u8 tos_or_tc;
220	__le32 ka_timeout;
221	__le32 ka_interval;
222	__le32 max_rt_time;
223	__le32 flow_label;
224	__le32 initial_rcv_wnd;
225	u8 ka_max_probe_cnt;
226	u8 reserved1[7];
227	};
228
229	struct tcp_upload_params {
230	__le32 rcv_next;
231	__le32 snd_una;
232	__le32 snd_next;
233	__le32 snd_max;
234	__le32 snd_wnd;
235	__le32 rcv_wnd;
236	__le32 snd_wl1;
237	__le32 cwnd;
238	__le32 ss_thresh;
239	__le16 srtt;
240	__le16 rtt_var;
241	__le32 ts_time;
242	__le32 ts_recent;
243	__le32 ts_recent_age;
244	__le32 total_rt;
245	__le32 ka_timeout_delta;
246	__le32 rt_timeout_delta;
247	u8 dup_ack_cnt;
248	u8 snd_wnd_probe_cnt;
249	u8 ka_probe_cnt;
250	u8 rt_cnt;
251	__le32 reserved;
252	};
253
254	#endif /* __TCP_COMMON__ */