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P2P: Fix setting of P2P Client Discoverability bit

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In the P2P specification v1.1, the P2P Client Discoverability bit is
described in Table 12 "Device Capability Bitmap definition". The table
says "Within a P2P Group Info attribute and a (Re)association request
frame the P2P Client Discoverability field shall be set to 1 when the
P2P Device supports P2P Client Discoverability, and is set to 0
otherwise. This field shall be reserved and set to 0 in all other frames
or uses.". To match with this, filter out P2P Client Discoverability bit
from frames where its use is reserved.

Signed-hostap: Masashi Honma <masashi.honma@gmail.com>
This commit is contained in:
Masashi Honma 2012-06-16 19:54:47 +03:00 • committed by Jouni Malinen
parent 1cebaabd80
commit 18485b5469
3 changed files with 15 additions and 6 deletions
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6
src/p2p/p2p.c
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@ -1815,7 +1815,8 @@ struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
/* P2P IE */
len = p2p_buf_add_ie_hdr(buf);
p2p_buf_add_capability(buf, p2p->dev_capab, 0);
p2p_buf_add_capability(buf, p2p->dev_capab &
~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
if (p2p->ext_listen_interval)
p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
p2p->ext_listen_interval);
@ -2662,7 +2663,8 @@ void p2p_scan_res_handled(struct p2p_data *p2p)
void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
{
u8 *len = p2p_buf_add_ie_hdr(ies);
p2p_buf_add_capability(ies, p2p->dev_capab, 0);
p2p_buf_add_capability(ies, p2p->dev_capab &
~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
if (dev_id)
p2p_buf_add_device_id(ies, dev_id);
if (p2p->cfg->reg_class && p2p->cfg->channel)