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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/net/enic/rq_enet_desc.h
2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 #ifndef _RQ_ENET_DESC_H_
21 #define _RQ_ENET_DESC_H_
23 /* Ethernet receive queue descriptor: 16B */
30 enum rq_enet_type_types
{
31 RQ_ENET_TYPE_ONLY_SOP
= 0,
32 RQ_ENET_TYPE_NOT_SOP
= 1,
33 RQ_ENET_TYPE_RESV2
= 2,
34 RQ_ENET_TYPE_RESV3
= 3,
37 #define RQ_ENET_ADDR_BITS 64
38 #define RQ_ENET_LEN_BITS 14
39 #define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
40 #define RQ_ENET_TYPE_BITS 2
41 #define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
43 static inline void rq_enet_desc_enc(struct rq_enet_desc
*desc
,
44 u64 address
, u8 type
, u16 length
)
46 desc
->address
= cpu_to_le64(address
);
47 desc
->length_type
= cpu_to_le16((length
& RQ_ENET_LEN_MASK
) |
48 ((type
& RQ_ENET_TYPE_MASK
) << RQ_ENET_LEN_BITS
));
51 static inline void rq_enet_desc_dec(struct rq_enet_desc
*desc
,
52 u64
*address
, u8
*type
, u16
*length
)
54 *address
= le64_to_cpu(desc
->address
);
55 *length
= le16_to_cpu(desc
->length_type
) & RQ_ENET_LEN_MASK
;
56 *type
= (u8
)((le16_to_cpu(desc
->length_type
) >> RQ_ENET_LEN_BITS
) &
60 #endif /* _RQ_ENET_DESC_H_ */