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OCE: Add RSSI based association rejection support (STA)

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An AP might refuse to connect a STA if it has a low RSSI. In such case,
the AP informs the STA with the desired RSSI delta and a retry timeout.
Any subsequent association attempt with that AP (BSS) should be avoided,
unless the RSSI level improved by the desired delta or the timeout has
expired.

Defined in Wi-Fi Alliance Optimized Connectivity Experience technical
specification v1.0, section 3.14 (RSSI-based association rejection
information).

Signed-off-by: Beni Lev <beni.lev@intel.com>
This commit is contained in:
Beni Lev 2017-08-21 19:43:52 +03:00 • committed by Jouni Malinen
parent 2994ecfb5f
commit 19677b77c3
8 changed files with 88 additions and 17 deletions
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18
src/common/ieee802_11_common.c
View file

@ -1538,6 +1538,24 @@ const u8 * get_ie_ext(const u8 *ies, size_t len, u8 ext)
}
const u8 * get_vendor_ie(const u8 *ies, size_t len, u32 vendor_type)
{
const u8 *pos = ies, *end = ies + len;
while (end - pos > 1) {
if (2 + pos[1] > end - pos)
break;
if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
vendor_type == WPA_GET_BE32(&pos[2]))
return pos;
pos += 2 + pos[1];
}
return NULL;
}
size_t mbo_add_ie(u8 *buf, size_t len, const u8 *attr, size_t attr_len)
{
/*

1
src/common/ieee802_11_common.h
View file

@ -193,6 +193,7 @@ extern size_t global_op_class_size;
const u8 * get_ie(const u8 *ies, size_t len, u8 eid);
const u8 * get_ie_ext(const u8 *ies, size_t len, u8 ext);
const u8 * get_vendor_ie(const u8 *ies, size_t len, u32 vendor_type);
size_t mbo_add_ie(u8 *buf, size_t len, const u8 *attr, size_t attr_len);