xref: /freebsd/sys/dev/hyperv/netvsc/ndis.h (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6)
1 /*-
2  * Copyright (c) 2016-2017 Microsoft Corp.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice unmodified, this list of conditions, and the following
10  *    disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #ifndef _NET_NDIS_H_
28 #define _NET_NDIS_H_
29 
30 #define	NDIS_MEDIA_STATE_CONNECTED	0
31 #define	NDIS_MEDIA_STATE_DISCONNECTED	1
32 
33 #define	NDIS_NETCHANGE_TYPE_POSSIBLE	1
34 #define	NDIS_NETCHANGE_TYPE_DEFINITE	2
35 #define	NDIS_NETCHANGE_TYPE_FROMMEDIA	3
36 
37 #define	NDIS_OFFLOAD_SET_NOCHG		0
38 #define	NDIS_OFFLOAD_SET_ON		1
39 #define	NDIS_OFFLOAD_SET_OFF		2
40 
41 /* a.k.a GRE MAC */
42 #define	NDIS_ENCAP_TYPE_NVGRE		0x00000001
43 
44 #define	NDIS_HASH_FUNCTION_MASK		0x000000FF	/* see hash function */
45 #define	NDIS_HASH_TYPE_MASK		0x00FFFF00	/* see hash type */
46 
47 /* hash function */
48 #define	NDIS_HASH_FUNCTION_TOEPLITZ	0x00000001
49 
50 /* hash type */
51 #define	NDIS_HASH_IPV4			0x00000100
52 #define	NDIS_HASH_TCP_IPV4		0x00000200
53 #define	NDIS_HASH_IPV6			0x00000400
54 #define	NDIS_HASH_IPV6_EX		0x00000800
55 #define	NDIS_HASH_TCP_IPV6		0x00001000
56 #define	NDIS_HASH_TCP_IPV6_EX		0x00002000
57 #define	NDIS_HASH_UDP_IPV4_X		0x00004000	/* XXX non-standard */
58 
59 #define	NDIS_HASH_ALL			(NDIS_HASH_IPV4 |	\
60 					 NDIS_HASH_TCP_IPV4 |	\
61 					 NDIS_HASH_IPV6 |	\
62 					 NDIS_HASH_IPV6_EX |	\
63 					 NDIS_HASH_TCP_IPV6 |	\
64 					 NDIS_HASH_TCP_IPV6_EX |\
65 					 NDIS_HASH_UDP_IPV4_X)
66 
67 #define	NDIS_HASH_STD			(NDIS_HASH_IPV4 |	\
68 					 NDIS_HASH_TCP_IPV4 |	\
69 					 NDIS_HASH_IPV6 |	\
70 					 NDIS_HASH_IPV6_EX |	\
71 					 NDIS_HASH_TCP_IPV6 |	\
72 					 NDIS_HASH_TCP_IPV6_EX)
73 
74 /* Hash description for use with printf(9) %b identifier. */
75 #define	NDIS_HASH_BITS			\
76 	"\20\1TOEPLITZ\11IP4\12TCP4\13IP6\14IP6EX\15TCP6\16TCP6EX\17UDP4_X"
77 
78 #define	NDIS_HASH_KEYSIZE_TOEPLITZ	40
79 #define	NDIS_HASH_INDCNT		128
80 
81 #define	NDIS_OBJTYPE_DEFAULT		0x80
82 #define	NDIS_OBJTYPE_RSS_CAPS		0x88
83 #define	NDIS_OBJTYPE_RSS_PARAMS		0x89
84 #define	NDIS_OBJTYPE_OFFLOAD		0xa7
85 
86 struct ndis_object_hdr {
87 	uint8_t			ndis_type;	/* NDIS_OBJTYPE_ */
88 	uint8_t			ndis_rev;	/* type specific */
89 	uint16_t		ndis_size;	/* incl. this hdr */
90 };
91 
92 /*
93  * OID_TCP_OFFLOAD_PARAMETERS
94  * ndis_type: NDIS_OBJTYPE_DEFAULT
95  */
96 struct ndis_offload_params {
97 	struct ndis_object_hdr	ndis_hdr;
98 	uint8_t			ndis_ip4csum;	/* NDIS_OFFLOAD_PARAM_ */
99 	uint8_t			ndis_tcp4csum;	/* NDIS_OFFLOAD_PARAM_ */
100 	uint8_t			ndis_udp4csum;	/* NDIS_OFFLOAD_PARAM_ */
101 	uint8_t			ndis_tcp6csum;	/* NDIS_OFFLOAD_PARAM_ */
102 	uint8_t			ndis_udp6csum;	/* NDIS_OFFLOAD_PARAM_ */
103 	uint8_t			ndis_lsov1;	/* NDIS_OFFLOAD_PARAM_ */
104 	uint8_t			ndis_ipsecv1;	/* NDIS_OFFLOAD_IPSECV1_ */
105 	uint8_t			ndis_lsov2_ip4;	/* NDIS_OFFLOAD_LSOV2_ */
106 	uint8_t			ndis_lsov2_ip6;	/* NDIS_OFFLOAD_LSOV2_ */
107 	uint8_t			ndis_tcp4conn;	/* 0 */
108 	uint8_t			ndis_tcp6conn;	/* 0 */
109 	uint32_t		ndis_flags;	/* 0 */
110 	/* NDIS >= 6.1 */
111 	uint8_t			ndis_ipsecv2;	/* NDIS_OFFLOAD_IPSECV2_ */
112 	uint8_t			ndis_ipsecv2_ip4;/* NDIS_OFFLOAD_IPSECV2_ */
113 	/* NDIS >= 6.30 */
114 	uint8_t			ndis_rsc_ip4;	/* NDIS_OFFLOAD_RSC_ */
115 	uint8_t			ndis_rsc_ip6;	/* NDIS_OFFLOAD_RSC_ */
116 	uint8_t			ndis_encap;	/* NDIS_OFFLOAD_SET_ */
117 	uint8_t			ndis_encap_types;/* NDIS_ENCAP_TYPE_ */
118 };
119 
120 #define	NDIS_OFFLOAD_PARAMS_SIZE	sizeof(struct ndis_offload_params)
121 #define	NDIS_OFFLOAD_PARAMS_SIZE_6_1	\
122 	__offsetof(struct ndis_offload_params, ndis_rsc_ip4)
123 
124 #define	NDIS_OFFLOAD_PARAMS_REV_2	2	/* NDIS 6.1 */
125 #define	NDIS_OFFLOAD_PARAMS_REV_3	3	/* NDIS 6.30 */
126 
127 #define	NDIS_OFFLOAD_PARAM_NOCHG	0	/* common */
128 #define	NDIS_OFFLOAD_PARAM_OFF		1
129 #define	NDIS_OFFLOAD_PARAM_TX		2
130 #define	NDIS_OFFLOAD_PARAM_RX		3
131 #define	NDIS_OFFLOAD_PARAM_TXRX		4
132 
133 /* NDIS_OFFLOAD_PARAM_NOCHG */
134 #define	NDIS_OFFLOAD_LSOV1_OFF		1
135 #define	NDIS_OFFLOAD_LSOV1_ON		2
136 
137 /* NDIS_OFFLOAD_PARAM_NOCHG */
138 #define	NDIS_OFFLOAD_IPSECV1_OFF	1
139 #define	NDIS_OFFLOAD_IPSECV1_AH		2
140 #define	NDIS_OFFLOAD_IPSECV1_ESP	3
141 #define	NDIS_OFFLOAD_IPSECV1_AH_ESP	4
142 
143 /* NDIS_OFFLOAD_PARAM_NOCHG */
144 #define	NDIS_OFFLOAD_LSOV2_OFF		1
145 #define	NDIS_OFFLOAD_LSOV2_ON		2
146 
147 /* NDIS_OFFLOAD_PARAM_NOCHG */
148 #define	NDIS_OFFLOAD_IPSECV2_OFF	1
149 #define	NDIS_OFFLOAD_IPSECV2_AH		2
150 #define	NDIS_OFFLOAD_IPSECV2_ESP	3
151 #define	NDIS_OFFLOAD_IPSECV2_AH_ESP	4
152 
153 /* NDIS_OFFLOAD_PARAM_NOCHG */
154 #define	NDIS_OFFLOAD_RSC_OFF		1
155 #define	NDIS_OFFLOAD_RSC_ON		2
156 
157 /*
158  * OID_GEN_RECEIVE_SCALE_CAPABILITIES
159  * ndis_type: NDIS_OBJTYPE_RSS_CAPS
160  */
161 struct ndis_rss_caps {
162 	struct ndis_object_hdr		ndis_hdr;
163 	uint32_t			ndis_caps;	/* NDIS_RSS_CAP_ */
164 	uint32_t			ndis_nmsi;	/* # of MSIs */
165 	uint32_t			ndis_nrxr;	/* # of RX rings */
166 	/* NDIS >= 6.30 */
167 	uint16_t			ndis_nind;	/* # of indtbl ent. */
168 	uint16_t			ndis_pad;
169 };
170 
171 #define	NDIS_RSS_CAPS_SIZE		\
172 	__offsetof(struct ndis_rss_caps, ndis_pad)
173 #define	NDIS_RSS_CAPS_SIZE_6_0		\
174 	__offsetof(struct ndis_rss_caps, ndis_nind)
175 
176 #define	NDIS_RSS_CAPS_REV_1		1	/* NDIS 6.{0,1,20} */
177 #define	NDIS_RSS_CAPS_REV_2		2	/* NDIS 6.30 */
178 
179 #define	NDIS_RSS_CAP_MSI		0x01000000
180 #define	NDIS_RSS_CAP_CLASSIFY_ISR	0x02000000
181 #define	NDIS_RSS_CAP_CLASSIFY_DPC	0x04000000
182 #define	NDIS_RSS_CAP_MSIX		0x08000000
183 #define	NDIS_RSS_CAP_IPV4		0x00000100
184 #define	NDIS_RSS_CAP_IPV6		0x00000200
185 #define	NDIS_RSS_CAP_IPV6_EX		0x00000400
186 #define	NDIS_RSS_CAP_HASH_TOEPLITZ	NDIS_HASH_FUNCTION_TOEPLITZ
187 #define	NDIS_RSS_CAP_HASHFUNC_MASK	NDIS_HASH_FUNCTION_MASK
188 
189 /*
190  * OID_GEN_RECEIVE_SCALE_PARAMETERS
191  * ndis_type: NDIS_OBJTYPE_RSS_PARAMS
192  */
193 struct ndis_rss_params {
194 	struct ndis_object_hdr		ndis_hdr;
195 	uint16_t			ndis_flags;	/* NDIS_RSS_FLAG_ */
196 	uint16_t			ndis_bcpu;	/* base cpu 0 */
197 	uint32_t			ndis_hash;	/* NDIS_HASH_ */
198 	uint16_t			ndis_indsize;	/* indirect table */
199 	uint32_t			ndis_indoffset;
200 	uint16_t			ndis_keysize;	/* hash key */
201 	uint32_t			ndis_keyoffset;
202 	/* NDIS >= 6.20 */
203 	uint32_t			ndis_cpumaskoffset;
204 	uint32_t			ndis_cpumaskcnt;
205 	uint32_t			ndis_cpumaskentsz;
206 };
207 
208 #define	NDIS_RSS_PARAMS_SIZE		sizeof(struct ndis_rss_params)
209 #define	NDIS_RSS_PARAMS_SIZE_6_0	\
210 	__offsetof(struct ndis_rss_params, ndis_cpumaskoffset)
211 
212 #define	NDIS_RSS_PARAMS_REV_1		1	/* NDIS 6.0 */
213 #define	NDIS_RSS_PARAMS_REV_2		2	/* NDIS 6.20 */
214 
215 #define	NDIS_RSS_FLAG_NONE		0x0000
216 #define	NDIS_RSS_FLAG_BCPU_UNCHG	0x0001
217 #define	NDIS_RSS_FLAG_HASH_UNCHG	0x0002
218 #define	NDIS_RSS_FLAG_IND_UNCHG		0x0004
219 #define	NDIS_RSS_FLAG_KEY_UNCHG		0x0008
220 #define	NDIS_RSS_FLAG_DISABLE		0x0010
221 
222 /* non-standard convenient struct */
223 struct ndis_rssprm_toeplitz {
224 	struct ndis_rss_params		rss_params;
225 	/* Toeplitz hash key */
226 	uint8_t				rss_key[NDIS_HASH_KEYSIZE_TOEPLITZ];
227 	/* Indirect table */
228 	uint32_t			rss_ind[NDIS_HASH_INDCNT];
229 };
230 
231 #define	NDIS_RSSPRM_TOEPLITZ_SIZE(nind)	\
232 	__offsetof(struct ndis_rssprm_toeplitz, rss_ind[nind])
233 
234 /*
235  * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
236  * ndis_type: NDIS_OBJTYPE_OFFLOAD
237  */
238 
239 #define	NDIS_OFFLOAD_ENCAP_NONE		0x0000
240 #define	NDIS_OFFLOAD_ENCAP_NULL		0x0001
241 #define	NDIS_OFFLOAD_ENCAP_8023		0x0002
242 #define	NDIS_OFFLOAD_ENCAP_8023PQ	0x0004
243 #define	NDIS_OFFLOAD_ENCAP_8023PQ_OOB	0x0008
244 #define	NDIS_OFFLOAD_ENCAP_RFC1483	0x0010
245 
246 struct ndis_csum_offload {
247 	uint32_t			ndis_ip4_txenc;	/*NDIS_OFFLOAD_ENCAP_*/
248 	uint32_t			ndis_ip4_txcsum;
249 #define	NDIS_TXCSUM_CAP_IP4OPT		0x001
250 #define	NDIS_TXCSUM_CAP_TCP4OPT		0x004
251 #define	NDIS_TXCSUM_CAP_TCP4		0x010
252 #define	NDIS_TXCSUM_CAP_UDP4		0x040
253 #define	NDIS_TXCSUM_CAP_IP4		0x100
254 	uint32_t			ndis_ip4_rxenc;	/*NDIS_OFFLOAD_ENCAP_*/
255 	uint32_t			ndis_ip4_rxcsum;
256 #define	NDIS_RXCSUM_CAP_IP4OPT		0x001
257 #define	NDIS_RXCSUM_CAP_TCP4OPT		0x004
258 #define	NDIS_RXCSUM_CAP_TCP4		0x010
259 #define	NDIS_RXCSUM_CAP_UDP4		0x040
260 #define	NDIS_RXCSUM_CAP_IP4		0x100
261 	uint32_t			ndis_ip6_txenc;	/*NDIS_OFFLOAD_ENCAP_*/
262 	uint32_t			ndis_ip6_txcsum;
263 #define	NDIS_TXCSUM_CAP_IP6EXT		0x001
264 #define	NDIS_TXCSUM_CAP_TCP6OPT		0x004
265 #define	NDIS_TXCSUM_CAP_TCP6		0x010
266 #define	NDIS_TXCSUM_CAP_UDP6		0x040
267 	uint32_t			ndis_ip6_rxenc;	/*NDIS_OFFLOAD_ENCAP_*/
268 	uint32_t			ndis_ip6_rxcsum;
269 #define	NDIS_RXCSUM_CAP_IP6EXT		0x001
270 #define	NDIS_RXCSUM_CAP_TCP6OPT		0x004
271 #define	NDIS_RXCSUM_CAP_TCP6		0x010
272 #define	NDIS_RXCSUM_CAP_UDP6		0x040
273 };
274 
275 struct ndis_lsov1_offload {
276 	uint32_t			ndis_encap;	/*NDIS_OFFLOAD_ENCAP_*/
277 	uint32_t			ndis_maxsize;
278 	uint32_t			ndis_minsegs;
279 	uint32_t			ndis_opts;
280 };
281 
282 struct ndis_ipsecv1_offload {
283 	uint32_t			ndis_encap;	/*NDIS_OFFLOAD_ENCAP_*/
284 	uint32_t			ndis_ah_esp;
285 	uint32_t			ndis_xport_tun;
286 	uint32_t			ndis_ip4_opts;
287 	uint32_t			ndis_flags;
288 	uint32_t			ndis_ip4_ah;
289 	uint32_t			ndis_ip4_esp;
290 };
291 
292 struct ndis_lsov2_offload {
293 	uint32_t			ndis_ip4_encap;	/*NDIS_OFFLOAD_ENCAP_*/
294 	uint32_t			ndis_ip4_maxsz;
295 	uint32_t			ndis_ip4_minsg;
296 	uint32_t			ndis_ip6_encap;	/*NDIS_OFFLOAD_ENCAP_*/
297 	uint32_t			ndis_ip6_maxsz;
298 	uint32_t			ndis_ip6_minsg;
299 	uint32_t			ndis_ip6_opts;
300 #define	NDIS_LSOV2_CAP_IP6EXT		0x001
301 #define	NDIS_LSOV2_CAP_TCP6OPT		0x004
302 };
303 
304 struct ndis_ipsecv2_offload {
305 	uint32_t			ndis_encap;	/*NDIS_OFFLOAD_ENCAP_*/
306 	uint8_t			ndis_ip6;
307 	uint8_t			ndis_ip4opt;
308 	uint8_t			ndis_ip6ext;
309 	uint8_t			ndis_ah;
310 	uint8_t			ndis_esp;
311 	uint8_t			ndis_ah_esp;
312 	uint8_t			ndis_xport;
313 	uint8_t			ndis_tun;
314 	uint8_t			ndis_xport_tun;
315 	uint8_t			ndis_lso;
316 	uint8_t			ndis_extseq;
317 	uint32_t			ndis_udp_esp;
318 	uint32_t			ndis_auth;
319 	uint32_t			ndis_crypto;
320 	uint32_t			ndis_sa_caps;
321 };
322 
323 struct ndis_rsc_offload {
324 	uint8_t			ndis_ip4;
325 	uint8_t			ndis_ip6;
326 };
327 
328 struct ndis_encap_offload {
329 	uint32_t			ndis_flags;
330 	uint32_t			ndis_maxhdr;
331 };
332 
333 struct ndis_offload {
334 	struct ndis_object_hdr		ndis_hdr;
335 	struct ndis_csum_offload	ndis_csum;
336 	struct ndis_lsov1_offload	ndis_lsov1;
337 	struct ndis_ipsecv1_offload	ndis_ipsecv1;
338 	struct ndis_lsov2_offload	ndis_lsov2;
339 	uint32_t			ndis_flags;
340 	/* NDIS >= 6.1 */
341 	struct ndis_ipsecv2_offload	ndis_ipsecv2;
342 	/* NDIS >= 6.30 */
343 	struct ndis_rsc_offload		ndis_rsc;
344 	struct ndis_encap_offload	ndis_encap_gre;
345 };
346 
347 #define	NDIS_OFFLOAD_SIZE		sizeof(struct ndis_offload)
348 #define	NDIS_OFFLOAD_SIZE_6_0		\
349 	__offsetof(struct ndis_offload, ndis_ipsecv2)
350 #define	NDIS_OFFLOAD_SIZE_6_1		\
351 	__offsetof(struct ndis_offload, ndis_rsc)
352 
353 #define	NDIS_OFFLOAD_REV_1		1	/* NDIS 6.0 */
354 #define	NDIS_OFFLOAD_REV_2		2	/* NDIS 6.1 */
355 #define	NDIS_OFFLOAD_REV_3		3	/* NDIS 6.30 */
356 
357 /*
358  * Per-packet-info
359  */
360 
361 /* VLAN */
362 #define	NDIS_VLAN_INFO_SIZE		sizeof(uint32_t)
363 #define	NDIS_VLAN_INFO_PRI_MASK		0x0007
364 #define	NDIS_VLAN_INFO_CFI_MASK		0x0008
365 #define	NDIS_VLAN_INFO_ID_MASK		0xfff0
366 #define	NDIS_VLAN_INFO_MAKE(id, pri, cfi)	\
367         (((pri) & NDIS_VLAN_INFO_PRI_MASK) |	\
368 	 (((cfi) & 0x1) << 3) | (((id) & 0xfff) << 4))
369 #define	NDIS_VLAN_INFO_ID(inf)		(((inf) & NDIS_VLAN_INFO_ID_MASK) >> 4)
370 #define	NDIS_VLAN_INFO_CFI(inf)		(((inf) & NDIS_VLAN_INFO_CFI_MASK) >> 3)
371 #define	NDIS_VLAN_INFO_PRI(inf)		((inf) & NDIS_VLAN_INFO_PRI_MASK)
372 
373 /* Reception checksum */
374 #define	NDIS_RXCSUM_INFO_SIZE		sizeof(uint32_t)
375 #define	NDIS_RXCSUM_INFO_TCPCS_FAILED	0x0001
376 #define	NDIS_RXCSUM_INFO_UDPCS_FAILED	0x0002
377 #define	NDIS_RXCSUM_INFO_IPCS_FAILED	0x0004
378 #define	NDIS_RXCSUM_INFO_TCPCS_OK	0x0008
379 #define	NDIS_RXCSUM_INFO_UDPCS_OK	0x0010
380 #define	NDIS_RXCSUM_INFO_IPCS_OK	0x0020
381 #define	NDIS_RXCSUM_INFO_LOOPBACK	0x0040
382 #define	NDIS_RXCSUM_INFO_TCPCS_INVAL	0x0080
383 #define	NDIS_RXCSUM_INFO_IPCS_INVAL	0x0100
384 
385 /* LSOv2 */
386 #define	NDIS_LSO2_INFO_SIZE		sizeof(uint32_t)
387 #define	NDIS_LSO2_INFO_MSS_MASK		0x000fffff
388 #define	NDIS_LSO2_INFO_THOFF_MASK	0x3ff00000
389 #define	NDIS_LSO2_INFO_ISLSO2		0x40000000
390 #define	NDIS_LSO2_INFO_ISIPV6		0x80000000
391 
392 #define	NDIS_LSO2_INFO_MAKE(thoff, mss)				\
393 	((((uint32_t)(mss)) & NDIS_LSO2_INFO_MSS_MASK) |	\
394 	 ((((uint32_t)(thoff)) & 0x3ff) << 20) |		\
395 	 NDIS_LSO2_INFO_ISLSO2)
396 
397 #define	NDIS_LSO2_INFO_MAKEIPV4(thoff, mss)			\
398 	NDIS_LSO2_INFO_MAKE((thoff), (mss))
399 
400 #define	NDIS_LSO2_INFO_MAKEIPV6(thoff, mss)			\
401 	(NDIS_LSO2_INFO_MAKE((thoff), (mss)) | NDIS_LSO2_INFO_ISIPV6)
402 
403 /* Transmission checksum */
404 #define	NDIS_TXCSUM_INFO_SIZE		sizeof(uint32_t)
405 #define	NDIS_TXCSUM_INFO_IPV4		0x00000001
406 #define	NDIS_TXCSUM_INFO_IPV6		0x00000002
407 #define	NDIS_TXCSUM_INFO_TCPCS		0x00000004
408 #define	NDIS_TXCSUM_INFO_UDPCS		0x00000008
409 #define	NDIS_TXCSUM_INFO_IPCS		0x00000010
410 #define	NDIS_TXCSUM_INFO_THOFF		0x03ff0000
411 
412 #define	NDIS_TXCSUM_INFO_MKL4CS(thoff, flag)			\
413 	((((uint32_t)(thoff)) << 16) | (flag))
414 
415 #define	NDIS_TXCSUM_INFO_MKTCPCS(thoff)				\
416 	NDIS_TXCSUM_INFO_MKL4CS((thoff), NDIS_TXCSUM_INFO_TCPCS)
417 
418 #define	NDIS_TXCSUM_INFO_MKUDPCS(thoff)				\
419 	NDIS_TXCSUM_INFO_MKL4CS((thoff), NDIS_TXCSUM_INFO_UDPCS)
420 #endif	/* !_NET_NDIS_H_ */
421