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4bd43f50 LR |
1 | /* |
2 | * Copyright (c) 2007-2008 Atheros Communications Inc. | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | /* */ | |
17 | /* Module Name : wrap_buf.c */ | |
18 | /* */ | |
19 | /* Abstract */ | |
20 | /* This module contains wrapper functions for buffer management */ | |
21 | /* */ | |
22 | /* NOTES */ | |
23 | /* Platform dependent. */ | |
24 | /* */ | |
25 | /************************************************************************/ | |
26 | ||
27 | #include "oal_dt.h" | |
28 | #include "usbdrv.h" | |
29 | ||
30 | ||
31 | #include <linux/netlink.h> | |
32 | ||
4bd43f50 | 33 | #include <net/iw_handler.h> |
4bd43f50 LR |
34 | |
35 | ||
36 | /* Called to allocate buffer, must return a continue buffer space */ | |
37 | zbuf_t* zfwBufAllocate(zdev_t* dev, u16_t len) | |
38 | { | |
39 | zbuf_t* buf; | |
40 | ||
41 | /* Allocate SKB for packet*/ | |
42 | buf = dev_alloc_skb(len); | |
43 | ||
44 | return buf; | |
45 | } | |
46 | ||
47 | ||
48 | /* Called to free buffer, replace below 3 functions */ | |
49 | void zfwBufFree(zdev_t* dev, zbuf_t* buf, u16_t status) | |
50 | { | |
51 | dev_kfree_skb_any(buf); | |
52 | } | |
53 | ||
54 | /* Called to adjust buffer size and head pointer */ | |
55 | u16_t zfwBufRemoveHead(zdev_t* dev, zbuf_t* buf, u16_t size) | |
56 | { | |
57 | //zm_assert(buf->len > size); | |
58 | ||
59 | buf->data += size; | |
60 | buf->len -= size; | |
61 | return 0; | |
62 | } | |
63 | ||
64 | ||
65 | ||
66 | ||
67 | /* return tail if head==NULL, called to chain multiple buffer together */ | |
68 | /* Used to chain Rx buffer to form a frame. if the prepared Rx buffer */ | |
69 | /* is greater than an ethernet frame(1518+32 byte), then this function */ | |
70 | /* will only be called with head=NULL. */ | |
71 | u16_t zfwBufChain(zdev_t* dev, zbuf_t** head, zbuf_t* tail) | |
72 | { | |
73 | ||
74 | *head = tail; | |
75 | return 0; | |
76 | } | |
77 | ||
78 | ||
79 | /* Called when doing infra-bss forwarding */ | |
80 | u16_t zfwBufCopy(zdev_t* dev, zbuf_t* dst, zbuf_t* src) | |
81 | { | |
82 | memcpy(dst->data, src->data, src->len); | |
83 | dst->tail = dst->data; | |
84 | skb_put(dst, src->len); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | ||
89 | /* Called to adjust buffer size and tail pointer */ | |
90 | u16_t zfwBufSetSize(zdev_t* dev, zbuf_t* buf, u16_t size) | |
91 | { | |
92 | #ifdef NET_SKBUFF_DATA_USES_OFFSET | |
93 | buf->tail = 0; | |
94 | buf->len = 0; | |
95 | #else | |
96 | buf->tail = buf->data; | |
97 | buf->len = 0; | |
98 | #endif | |
99 | ||
100 | skb_put(buf, size); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | u16_t zfwBufGetSize(zdev_t* dev, zbuf_t* buf) | |
105 | { | |
106 | return buf->len; | |
107 | } | |
108 | ||
109 | void zfwCopyBufContext(zdev_t* dev, zbuf_t* source, zbuf_t* dst) | |
110 | { | |
111 | } |