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P2P: Advertise Persistent Reconnect group capability

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The persistent_reconnect configuration parameter was used to decide
whether to accept invitation to re-establish a persistent group.
However, this was not being advertised in the Group Capability bitmap.
Add the Persistent Reconnect bit based on this configuration to GO
Negotiation frames and Beacon/Probe Response frames from the GO.
This commit is contained in:
Jouni Malinen 2011-10-24 17:29:37 +03:00 committed by Jouni Malinen
parent ccc12d7841
commit acc247b260
6 changed files with 70 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
src/p2p/p2p.c
View file

@ -1029,6 +1029,26 @@ static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
}
static void p2p_set_dev_persistent(struct p2p_device *dev,
int persistent_group)
{
switch (persistent_group) {
case 0:
dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
P2P_DEV_PREFER_PERSISTENT_RECONN);
break;
case 1:
dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
break;
case 2:
dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
P2P_DEV_PREFER_PERSISTENT_RECONN;
break;
}
}
int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
enum p2p_wps_method wps_method,
int go_intent, const u8 *own_interface_addr,
@ -1086,10 +1106,7 @@ int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
dev->connect_reqs = 0;
dev->go_neg_req_sent = 0;
dev->go_state = UNKNOWN_GO;
if (persistent_group)
dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
else
dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
p2p_set_dev_persistent(dev, persistent_group);
p2p->go_intent = go_intent;
os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
@ -1159,10 +1176,7 @@ int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
dev->flags &= ~P2P_DEV_USER_REJECTED;
dev->go_neg_req_sent = 0;
dev->go_state = UNKNOWN_GO;
if (persistent_group)
dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
else
dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
p2p_set_dev_persistent(dev, persistent_group);
p2p->go_intent = go_intent;
os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
@ -1273,8 +1287,12 @@ void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
res.wps_method = peer->wps_method;
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
res.persistent_group = 2;
else
res.persistent_group = 1;
}
if (go) {
/* Setup AP mode for WPS provisioning */

14
src/p2p/p2p.h
View file

@ -120,6 +120,9 @@ struct p2p_go_neg_results {
/**
* persistent_group - Whether the group should be made persistent
* 0 = not persistent
* 1 = persistent group without persistent reconnect
* 2 = persistent group with persistent reconnect
*/
int persistent_group;
@ -846,7 +849,9 @@ int p2p_listen(struct p2p_data *p2p, unsigned int timeout);
* @go_intent: Local GO intent value (1..15)
* @own_interface_addr: Intended interface address to use with the group
* @force_freq: The only allowed channel frequency in MHz or 0
* @persistent_group: Whether to create a persistent group
* @persistent_group: Whether to create a persistent group (0 = no, 1 =
* persistent group without persistent reconnect, 2 = persistent group with
* persistent reconnect)
* Returns: 0 on success, -1 on failure
*/
int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
@ -862,7 +867,9 @@ int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
* @go_intent: Local GO intent value (1..15)
* @own_interface_addr: Intended interface address to use with the group
* @force_freq: The only allowed channel frequency in MHz or 0
* @persistent_group: Whether to create a persistent group
* @persistent_group: Whether to create a persistent group (0 = no, 1 =
* persistent group without persistent reconnect, 2 = persistent group with
* persistent reconnect)
* Returns: 0 on success, -1 on failure
*
* This is like p2p_connect(), but the actual group negotiation is not
@ -1164,6 +1171,9 @@ struct p2p_group;
struct p2p_group_config {
/**
* persistent_group - Whether the group is persistent
* 0 = not a persistent group
* 1 = persistent group without persistent reconnect
* 2 = persistent group with persistent reconnect
*/
int persistent_group;

17
src/p2p/p2p_go_neg.c
View file

@ -152,8 +152,11 @@ static struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p,
len = p2p_buf_add_ie_hdr(buf);
group_capab = 0;
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN;
}
if (p2p->cross_connect)
group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
if (p2p->cfg->p2p_intra_bss)
@ -242,8 +245,12 @@ static struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p,
p2p_buf_add_status(buf, status);
group_capab = 0;
if (peer && peer->go_state == LOCAL_GO) {
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
group_capab |=
P2P_GROUP_CAPAB_PERSISTENT_RECONN;
}
if (p2p->cross_connect)
group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
if (p2p->cfg->p2p_intra_bss)
@ -673,8 +680,12 @@ static struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p,
p2p_buf_add_status(buf, status);
group_capab = 0;
if (peer->go_state == LOCAL_GO) {
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
group_capab |=
P2P_GROUP_CAPAB_PERSISTENT_RECONN;
}
if (p2p->cross_connect)
group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
if (p2p->cfg->p2p_intra_bss)

5
src/p2p/p2p_group.c
View file

@ -147,8 +147,11 @@ static void p2p_group_add_common_ies(struct p2p_group *group,
dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
if (group->cfg->persistent_group)
if (group->cfg->persistent_group) {
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
if (group->cfg->persistent_group == 2)
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN;
}
if (group->p2p->cfg->p2p_intra_bss)
group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
if (group->group_formation)

1
src/p2p/p2p_i.h
View file

@ -89,6 +89,7 @@ struct p2p_device {
#define P2P_DEV_FORCE_FREQ BIT(13)
#define P2P_DEV_PD_FOR_JOIN BIT(14)
#define P2P_DEV_REPORTED_ONCE BIT(15)
#define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
unsigned int flags;
int status; /* enum p2p_status_code */

12
wpa_supplicant/p2p_supplicant.c
View file

@ -756,6 +756,7 @@ static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
d->p2p_group_idle = s->p2p_group_idle;
d->p2p_intra_bss = s->p2p_intra_bss;
d->persistent_reconnect = s->persistent_reconnect;
}
@ -2376,6 +2377,9 @@ static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
int go_intent, const u8 *own_interface_addr,
unsigned int force_freq, int persistent_group)
{
if (persistent_group && wpa_s->conf->persistent_reconnect)
persistent_group = 2;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
go_intent, own_interface_addr,
@ -2394,6 +2398,9 @@ static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
int go_intent, const u8 *own_interface_addr,
unsigned int force_freq, int persistent_group)
{
if (persistent_group && wpa_s->conf->persistent_reconnect)
persistent_group = 2;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return -1;
@ -3210,7 +3217,10 @@ struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
if (cfg == NULL)
return NULL;
cfg->persistent_group = persistent_group;
if (persistent_group && wpa_s->conf->persistent_reconnect)
cfg->persistent_group = 2;
else if (persistent_group)
cfg->persistent_group = 1;
os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
if (wpa_s->max_stations &&
wpa_s->max_stations < wpa_s->conf->max_num_sta)