1*5113495bSYour Name /*
2*5113495bSYour Name * Copyright (c) 2011-2017, 2019 The Linux Foundation. All rights reserved.
3*5113495bSYour Name *
4*5113495bSYour Name * Permission to use, copy, modify, and/or distribute this software for
5*5113495bSYour Name * any purpose with or without fee is hereby granted, provided that the
6*5113495bSYour Name * above copyright notice and this permission notice appear in all
7*5113495bSYour Name * copies.
8*5113495bSYour Name *
9*5113495bSYour Name * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
10*5113495bSYour Name * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
11*5113495bSYour Name * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
12*5113495bSYour Name * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13*5113495bSYour Name * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14*5113495bSYour Name * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
15*5113495bSYour Name * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16*5113495bSYour Name * PERFORMANCE OF THIS SOFTWARE.
17*5113495bSYour Name */
18*5113495bSYour Name
19*5113495bSYour Name #ifndef _OL_RX_DEFRAG_H_
20*5113495bSYour Name #define _OL_RX_DEFRAG_H_
21*5113495bSYour Name
22*5113495bSYour Name #include <qdf_nbuf.h>
23*5113495bSYour Name #include <cds_ieee80211_common.h>
24*5113495bSYour Name #include <qdf_util.h>
25*5113495bSYour Name #include <qdf_types.h>
26*5113495bSYour Name #include <qdf_mem.h>
27*5113495bSYour Name #include <ol_txrx_internal.h>
28*5113495bSYour Name #include <ol_txrx_dbg.h>
29*5113495bSYour Name
30*5113495bSYour Name #define DEFRAG_IEEE80211_KEY_LEN 8
31*5113495bSYour Name #define DEFRAG_IEEE80211_FCS_LEN 4
32*5113495bSYour Name
33*5113495bSYour Name struct ol_rx_defrag_cipher {
34*5113495bSYour Name const char *ic_name;
35*5113495bSYour Name uint16_t ic_header;
36*5113495bSYour Name uint8_t ic_trailer;
37*5113495bSYour Name uint8_t ic_miclen;
38*5113495bSYour Name };
39*5113495bSYour Name
40*5113495bSYour Name enum {
41*5113495bSYour Name OL_RX_DEFRAG_ERR,
42*5113495bSYour Name OL_RX_DEFRAG_OK,
43*5113495bSYour Name OL_RX_DEFRAG_PN_ERR
44*5113495bSYour Name };
45*5113495bSYour Name
46*5113495bSYour Name #define ol_rx_defrag_copydata(buf, offset, len, _to) \
47*5113495bSYour Name qdf_nbuf_copy_bits(buf, offset, len, _to)
48*5113495bSYour Name
49*5113495bSYour Name #define ol_rx_defrag_len(buf) \
50*5113495bSYour Name qdf_nbuf_len(buf)
51*5113495bSYour Name
52*5113495bSYour Name void
53*5113495bSYour Name ol_rx_fraglist_insert(htt_pdev_handle htt_pdev,
54*5113495bSYour Name qdf_nbuf_t *head_addr,
55*5113495bSYour Name qdf_nbuf_t *tail_addr,
56*5113495bSYour Name qdf_nbuf_t frag, uint8_t *all_frag_present);
57*5113495bSYour Name
58*5113495bSYour Name void ol_rx_defrag_waitlist_add(struct ol_txrx_peer_t *peer, unsigned int tid);
59*5113495bSYour Name
60*5113495bSYour Name void ol_rx_defrag_waitlist_remove(struct ol_txrx_peer_t *peer,
61*5113495bSYour Name unsigned int tid);
62*5113495bSYour Name
63*5113495bSYour Name void ol_rx_defrag_waitlist_flush(struct ol_txrx_pdev_t *pdev);
64*5113495bSYour Name
65*5113495bSYour Name void
66*5113495bSYour Name ol_rx_defrag(ol_txrx_pdev_handle pdev,
67*5113495bSYour Name struct ol_txrx_peer_t *peer, unsigned int tid,
68*5113495bSYour Name qdf_nbuf_t frag_list);
69*5113495bSYour Name
70*5113495bSYour Name int
71*5113495bSYour Name ol_rx_frag_tkip_decap(ol_txrx_pdev_handle pdev,
72*5113495bSYour Name qdf_nbuf_t msdu, uint16_t hdrlen);
73*5113495bSYour Name
74*5113495bSYour Name int
75*5113495bSYour Name ol_rx_frag_wep_decap(ol_txrx_pdev_handle pdev,
76*5113495bSYour Name qdf_nbuf_t nbuf, uint16_t hdrlen);
77*5113495bSYour Name
78*5113495bSYour Name void ol_rx_defrag_nwifi_to_8023(ol_txrx_pdev_handle pdev, qdf_nbuf_t msdu);
79*5113495bSYour Name
80*5113495bSYour Name void
81*5113495bSYour Name ol_rx_defrag_qos_decap(ol_txrx_pdev_handle pdev,
82*5113495bSYour Name qdf_nbuf_t nbuf, uint16_t hdrlen);
83*5113495bSYour Name
84*5113495bSYour Name int
85*5113495bSYour Name ol_rx_frag_tkip_demic(ol_txrx_pdev_handle pdev,
86*5113495bSYour Name const uint8_t *key, qdf_nbuf_t msdu, uint16_t hdrlen);
87*5113495bSYour Name
88*5113495bSYour Name int
89*5113495bSYour Name ol_rx_frag_ccmp_decap(ol_txrx_pdev_handle pdev,
90*5113495bSYour Name qdf_nbuf_t nbuf, uint16_t hdrlen);
91*5113495bSYour Name
92*5113495bSYour Name int
93*5113495bSYour Name ol_rx_frag_ccmp_demic(ol_txrx_pdev_handle pdev,
94*5113495bSYour Name qdf_nbuf_t wbuf, uint16_t hdrlen);
95*5113495bSYour Name
96*5113495bSYour Name uint16_t ol_rx_frag_hdrsize(const void *data);
97*5113495bSYour Name
98*5113495bSYour Name void ol_rx_defrag_michdr(const struct ieee80211_frame *wh0, uint8_t hdr[]);
99*5113495bSYour Name
100*5113495bSYour Name void
101*5113495bSYour Name ol_rx_reorder_store_frag(ol_txrx_pdev_handle pdev,
102*5113495bSYour Name struct ol_txrx_peer_t *peer,
103*5113495bSYour Name unsigned int tid, uint16_t seq_num, qdf_nbuf_t frag);
104*5113495bSYour Name
105*5113495bSYour Name qdf_nbuf_t
106*5113495bSYour Name ol_rx_defrag_decap_recombine(htt_pdev_handle htt_pdev,
107*5113495bSYour Name qdf_nbuf_t frag_list, uint16_t hdrsize);
108*5113495bSYour Name
109*5113495bSYour Name int
110*5113495bSYour Name ol_rx_defrag_mic(ol_txrx_pdev_handle pdev,
111*5113495bSYour Name const uint8_t *key,
112*5113495bSYour Name qdf_nbuf_t wbuf,
113*5113495bSYour Name uint16_t off, uint16_t data_len, uint8_t mic[]);
114*5113495bSYour Name
115*5113495bSYour Name void
116*5113495bSYour Name ol_rx_reorder_flush_frag(htt_pdev_handle htt_pdev,
117*5113495bSYour Name struct ol_txrx_peer_t *peer,
118*5113495bSYour Name unsigned int tid, uint16_t seq_num);
119*5113495bSYour Name
xor_block(uint8_t * b,const uint8_t * a,qdf_size_t len)120*5113495bSYour Name static inline void xor_block(uint8_t *b, const uint8_t *a, qdf_size_t len)
121*5113495bSYour Name {
122*5113495bSYour Name qdf_size_t i;
123*5113495bSYour Name
124*5113495bSYour Name for (i = 0; i < len; i++)
125*5113495bSYour Name b[i] ^= a[i];
126*5113495bSYour Name }
127*5113495bSYour Name
rotl(uint32_t val,int bits)128*5113495bSYour Name static inline uint32_t rotl(uint32_t val, int bits)
129*5113495bSYour Name {
130*5113495bSYour Name return (val << bits) | (val >> (32 - bits));
131*5113495bSYour Name }
132*5113495bSYour Name
rotr(uint32_t val,int bits)133*5113495bSYour Name static inline uint32_t rotr(uint32_t val, int bits)
134*5113495bSYour Name {
135*5113495bSYour Name return (val >> bits) | (val << (32 - bits));
136*5113495bSYour Name }
137*5113495bSYour Name
xswap(uint32_t val)138*5113495bSYour Name static inline uint32_t xswap(uint32_t val)
139*5113495bSYour Name {
140*5113495bSYour Name return ((val & 0x00ff00ff) << 8) | ((val & 0xff00ff00) >> 8);
141*5113495bSYour Name }
142*5113495bSYour Name
143*5113495bSYour Name static inline uint32_t
get_le32_split(uint8_t b0,uint8_t b1,uint8_t b2,uint8_t b3)144*5113495bSYour Name get_le32_split(uint8_t b0, uint8_t b1, uint8_t b2, uint8_t b3)
145*5113495bSYour Name {
146*5113495bSYour Name return b0 | (b1 << 8) | (b2 << 16) | (b3 << 24);
147*5113495bSYour Name }
148*5113495bSYour Name
get_le32(const uint8_t * p)149*5113495bSYour Name static inline uint32_t get_le32(const uint8_t *p)
150*5113495bSYour Name {
151*5113495bSYour Name return get_le32_split(p[0], p[1], p[2], p[3]);
152*5113495bSYour Name }
153*5113495bSYour Name
put_le32(uint8_t * p,uint32_t v)154*5113495bSYour Name static inline void put_le32(uint8_t *p, uint32_t v)
155*5113495bSYour Name {
156*5113495bSYour Name p[0] = (v) & 0xff;
157*5113495bSYour Name p[1] = (v >> 8) & 0xff;
158*5113495bSYour Name p[2] = (v >> 16) & 0xff;
159*5113495bSYour Name p[3] = (v >> 24) & 0xff;
160*5113495bSYour Name }
161*5113495bSYour Name
ol_rx_defrag_concat(qdf_nbuf_t dst,qdf_nbuf_t src)162*5113495bSYour Name static inline uint8_t ol_rx_defrag_concat(qdf_nbuf_t dst, qdf_nbuf_t src)
163*5113495bSYour Name {
164*5113495bSYour Name /*
165*5113495bSYour Name * Inside qdf_nbuf_cat, if it is necessary to reallocate dst
166*5113495bSYour Name * to provide space for src, the headroom portion is copied from
167*5113495bSYour Name * the original dst buffer to the larger new dst buffer.
168*5113495bSYour Name * (This is needed, because the headroom of the dst buffer
169*5113495bSYour Name * contains the rx desc.)
170*5113495bSYour Name */
171*5113495bSYour Name if (qdf_nbuf_cat(dst, src))
172*5113495bSYour Name return OL_RX_DEFRAG_ERR;
173*5113495bSYour Name
174*5113495bSYour Name /* Free source buffer */
175*5113495bSYour Name qdf_nbuf_free(src);
176*5113495bSYour Name
177*5113495bSYour Name return OL_RX_DEFRAG_OK;
178*5113495bSYour Name }
179*5113495bSYour Name
180*5113495bSYour Name #define michael_block(l, r) \
181*5113495bSYour Name do { \
182*5113495bSYour Name r ^= rotl(l, 17); \
183*5113495bSYour Name l += r; \
184*5113495bSYour Name r ^= xswap(l); \
185*5113495bSYour Name l += r; \
186*5113495bSYour Name r ^= rotl(l, 3); \
187*5113495bSYour Name l += r; \
188*5113495bSYour Name r ^= rotr(l, 2); \
189*5113495bSYour Name l += r; \
190*5113495bSYour Name } while (0)
191*5113495bSYour Name
192*5113495bSYour Name #endif
193