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mesh: Update MPM FSM events to match the standard

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{OPN,CNF,CLS}_IGNR events were removed during P802.11s draft development
process. Replace these with not generating a MPM FSM event. In addition,
add the standard REQ_RJCT event and option to pass in a specific reason
code to mesh_mpm_fsm().

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-06-28 23:20:39 +03:00
parent d02e549831
commit 02022564a0
1 changed files with 27 additions and 20 deletions
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39
wpa_supplicant/mesh_mpm.c
View file

@ -35,12 +35,10 @@ enum plink_event {
PLINK_UNDEFINED,
OPN_ACPT,
OPN_RJCT,
OPN_IGNR,
CNF_ACPT,
CNF_RJCT,
CNF_IGNR,
CLS_ACPT,
CLS_IGNR
REQ_RJCT
};
static const char * const mplstate[] = {
@ -58,12 +56,10 @@ static const char * const mplevent[] = {
[PLINK_UNDEFINED] = "UNDEFINED",
[OPN_ACPT] = "OPN_ACPT",
[OPN_RJCT] = "OPN_RJCT",
[OPN_IGNR] = "OPN_IGNR",
[CNF_ACPT] = "CNF_ACPT",
[CNF_RJCT] = "CNF_RJCT",
[CNF_IGNR] = "CNF_IGNR",
[CLS_ACPT] = "CLS_ACPT",
[CLS_IGNR] = "CLS_IGNR"
[REQ_RJCT] = "REQ_RJCT",
};
@ -847,11 +843,10 @@ static void mesh_mpm_plink_estab(struct wpa_supplicant *wpa_s,
static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
enum plink_event event)
enum plink_event event, u16 reason)
{
struct hostapd_data *hapd = wpa_s->ifmsh->bss[0];
struct mesh_conf *conf = wpa_s->ifmsh->mconf;
u16 reason = 0;
wpa_msg(wpa_s, MSG_DEBUG, "MPM " MACSTR " state %s event %s",
MAC2STR(sta->addr), mplstate[sta->plink_state],
@ -868,6 +863,10 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
mesh_mpm_send_plink_action(wpa_s, sta, PLINK_CONFIRM,
0);
break;
case REQ_RJCT:
mesh_mpm_send_plink_action(wpa_s, sta,
PLINK_CLOSE, reason);
break;
default:
break;
}
@ -876,6 +875,7 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
if (!reason)
reason = WLAN_REASON_MESH_CONFIG_POLICY_VIOLATION;
/* fall-through */
case CLS_ACPT:
@ -911,6 +911,7 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
if (!reason)
reason = WLAN_REASON_MESH_CONFIG_POLICY_VIOLATION;
/* fall-through */
case CLS_ACPT:
@ -942,6 +943,7 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
if (!reason)
reason = WLAN_REASON_MESH_CONFIG_POLICY_VIOLATION;
/* fall-through */
case CLS_ACPT:
@ -971,6 +973,7 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
switch (event) {
case CLS_ACPT:
wpa_mesh_set_plink_state(wpa_s, sta, PLINK_HOLDING);
if (!reason)
reason = WLAN_REASON_MESH_CLOSE_RCVD;
eloop_register_timeout(
@ -1039,6 +1042,7 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
const u8 *ies;
size_t ie_len;
int ret;
u16 reason = 0;
if (mgmt->u.action.category != WLAN_ACTION_SELF_PROTECTED)
return;
@ -1157,7 +1161,8 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
res);
if (action_field == PLINK_OPEN && res == -2) {
/* AES-SIV decryption failed */
mesh_mpm_fsm(wpa_s, sta, OPN_RJCT);
mesh_mpm_fsm(wpa_s, sta, OPN_RJCT,
WLAN_REASON_MESH_INVALID_GTK);
}
return;
}
@ -1172,12 +1177,13 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
switch (action_field) {
case PLINK_OPEN:
if (plink_free_count(hapd) == 0) {
event = OPN_IGNR;
event = REQ_RJCT;
reason = WLAN_REASON_MESH_MAX_PEERS;
wpa_printf(MSG_INFO,
"MPM: Peer link num over quota(%d)",
hapd->max_plinks);
} else if (sta->peer_lid && sta->peer_lid != plid) {
event = OPN_IGNR;
return; /* no FSM event */
} else {
sta->peer_lid = plid;
event = OPN_ACPT;
@ -1185,13 +1191,14 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
break;
case PLINK_CONFIRM:
if (plink_free_count(hapd) == 0) {
event = CNF_IGNR;
event = REQ_RJCT;
reason = WLAN_REASON_MESH_MAX_PEERS;
wpa_printf(MSG_INFO,
"MPM: Peer link num over quota(%d)",
hapd->max_plinks);
} else if (sta->my_lid != llid ||
(sta->peer_lid && sta->peer_lid != plid)) {
event = CNF_IGNR;
return; /* no FSM event */
} else {
if (!sta->peer_lid)
sta->peer_lid = plid;
@ -1211,9 +1218,9 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
*/
event = CLS_ACPT;
else if (sta->peer_lid != plid)
event = CLS_IGNR;
return; /* no FSM event */
else if (peer_mgmt_ie.plid && sta->my_lid != llid)
event = CLS_IGNR;
return; /* no FSM event */
else
event = CLS_ACPT;
break;
@ -1225,7 +1232,7 @@ void mesh_mpm_action_rx(struct wpa_supplicant *wpa_s,
*/
return;
}
mesh_mpm_fsm(wpa_s, sta, event);
mesh_mpm_fsm(wpa_s, sta, event, reason);
}