Kernel/iwd
3
0
Fork 0
mirror of https://git.kernel.org/pub/scm/network/wireless/iwd.git synced 2024-11-14 16:09:24 +01:00
Code Releases Activity

ie: Add parsine of Group Management Cipher field

Browse Source
This commit is contained in:
Denis Kenzior 2015-01-20 00:30:54 -06:00
parent d7cd5dbae7
commit 8a4e135bc8
1 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/ie.c
View File

@ -320,6 +320,27 @@ static bool ie_parse_pairwise_cipher(const uint8_t *data,
return true;
}
static bool ie_parse_group_management_cipher(const uint8_t *data,
enum ie_rsn_cipher_suite *out)
{
enum ie_rsn_cipher_suite tmp;
bool r = ie_parse_cipher_suite(data, &tmp);
if (!r)
return r;
switch (tmp) {
case IE_RSN_CIPHER_SUITE_BIP:
break;
default:
return false;
}
*out = tmp;
return true;
}
#define RSNE_ADVANCE(data, len, step) \
data += step; \
len -= step; \
@ -434,6 +455,13 @@ int ie_parse_rsne(struct ie_tlv_iter *iter, struct ie_rsn_info *out_info)
RSNE_ADVANCE(data, len, 2);
/*
* BIP—default group management cipher suite in an RSNA with
* management frame protection enabled
*/
if (info.mfpc)
info.group_management_cipher = IE_RSN_CIPHER_SUITE_BIP;
/* Parse PMKID Count field */
if (len < 2)
return -EBADMSG;
@ -455,6 +483,18 @@ int ie_parse_rsne(struct ie_tlv_iter *iter, struct ie_rsn_info *out_info)
RSNE_ADVANCE(data, len, info.num_pmkids * 16);
}
/* Parse Group Management Cipher Suite field */
if (len < 4)
return -EBADMSG;
if (!ie_parse_group_management_cipher(data,
&info.group_management_cipher))
return -ERANGE;
RSNE_ADVANCE(data, len, 4);
return -EBADMSG;
done:
if (out_info)
memcpy(out_info, &info, sizeof(info));