1
2
3
4#define pr_fmt(fmt) "MFA2: " fmt
5
6#include "mlxfw_mfa2_tlv_multi.h"
7#include <uapi/linux/netlink.h>
8
9#define MLXFW_MFA2_TLV_TOTAL_SIZE(tlv) \
10 NLA_ALIGN(sizeof(*(tlv)) + be16_to_cpu((tlv)->len))
11
12const struct mlxfw_mfa2_tlv *
13mlxfw_mfa2_tlv_multi_child(const struct mlxfw_mfa2_file *mfa2_file,
14 const struct mlxfw_mfa2_tlv_multi *multi)
15{
16 size_t multi_len;
17
18 multi_len = NLA_ALIGN(sizeof(struct mlxfw_mfa2_tlv_multi));
19 return mlxfw_mfa2_tlv_get(mfa2_file, (void *) multi + multi_len);
20}
21
22const struct mlxfw_mfa2_tlv *
23mlxfw_mfa2_tlv_next(const struct mlxfw_mfa2_file *mfa2_file,
24 const struct mlxfw_mfa2_tlv *tlv)
25{
26 const struct mlxfw_mfa2_tlv_multi *multi;
27 u16 tlv_len;
28 void *next;
29
30 tlv_len = MLXFW_MFA2_TLV_TOTAL_SIZE(tlv);
31
32 if (tlv->type == MLXFW_MFA2_TLV_MULTI_PART) {
33 multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, tlv);
34 tlv_len = NLA_ALIGN(tlv_len + be16_to_cpu(multi->total_len));
35 }
36
37 next = (void *) tlv + tlv_len;
38 return mlxfw_mfa2_tlv_get(mfa2_file, next);
39}
40
41const struct mlxfw_mfa2_tlv *
42mlxfw_mfa2_tlv_advance(const struct mlxfw_mfa2_file *mfa2_file,
43 const struct mlxfw_mfa2_tlv *from_tlv, u16 count)
44{
45 const struct mlxfw_mfa2_tlv *tlv;
46 u16 idx;
47
48 mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, from_tlv, count)
49 if (!tlv)
50 return NULL;
51 return tlv;
52}
53
54const struct mlxfw_mfa2_tlv *
55mlxfw_mfa2_tlv_multi_child_find(const struct mlxfw_mfa2_file *mfa2_file,
56 const struct mlxfw_mfa2_tlv_multi *multi,
57 enum mlxfw_mfa2_tlv_type type, u16 index)
58{
59 const struct mlxfw_mfa2_tlv *tlv;
60 u16 skip = 0;
61 u16 idx;
62
63 mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
64 if (!tlv) {
65 pr_err("TLV parsing error\n");
66 return NULL;
67 }
68 if (tlv->type == type)
69 if (skip++ == index)
70 return tlv;
71 }
72 return NULL;
73}
74
75int mlxfw_mfa2_tlv_multi_child_count(const struct mlxfw_mfa2_file *mfa2_file,
76 const struct mlxfw_mfa2_tlv_multi *multi,
77 enum mlxfw_mfa2_tlv_type type,
78 u16 *p_count)
79{
80 const struct mlxfw_mfa2_tlv *tlv;
81 u16 count = 0;
82 u16 idx;
83
84 mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
85 if (!tlv) {
86 pr_err("TLV parsing error\n");
87 return -EINVAL;
88 }
89
90 if (tlv->type == type)
91 count++;
92 }
93 *p_count = count;
94 return 0;
95}
96
