static uint32_t do_estab_peer_link(struct candidate *cand) {
uint32_t changed;
derive_mtk(cand);
cb->estab_peer_link(
cand->peer_mac,
cand->mtk,
sizeof(cand->mtk),
cand->mgtk,
sizeof(cand->mgtk),
cand->mgtk_expiration,
(cand->has_igtk) ? cand->igtk : NULL,
(cand->has_igtk) ? sizeof(cand->igtk) : 0,
cand->igtk_keyid,
cand->sup_rates,
cand->sup_rates_len,
cand->cookie);
set_link_state(cand, PLINK_ESTAB);
changed = mesh_set_ht_op_mode(cand->conf->mesh);
sae_debug(
AMPE_DEBUG_FSM,
"Mesh plink with " MACSTR " ESTABLISHED\n",
MAC2STR(cand->peer_mac));
rekey_verify_peer(cand);
return changed;
}
static void fsm_step(struct candidate *cand, enum plink_event event)
{
struct ampe_config *aconf = cand->conf;
unsigned short reason = 0;
uint32_t changed = 0;
switch (cand->link_state) {
case PLINK_LISTEN:
switch (event) {
case CLS_ACPT:
fsm_restart(cand);
break;
case OPN_ACPT:
cand->timeout = aconf->retry_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
plink_frame_tx(cand, PLINK_OPEN, 0);
plink_frame_tx(cand, PLINK_CONFIRM, 0);
break;
default:
break;
}
break;
case PLINK_OPN_SNT:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
reason = htole16(MESH_CAPABILITY_POLICY_VIOLATION);
case CLS_ACPT:
if (!reason)
reason = htole16(MESH_CLOSE_RCVD);
cand->reason = reason;
set_link_state(cand, PLINK_HOLDING);
cand->timeout = aconf->holding_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
plink_frame_tx(cand, PLINK_CLOSE, reason);
break;
case OPN_ACPT:
/* retry timer is left untouched */
set_link_state(cand, PLINK_OPN_RCVD);
plink_frame_tx(cand, PLINK_CONFIRM, 0);
break;
case CNF_ACPT:
set_link_state(cand, PLINK_CNF_RCVD);
cand->timeout = aconf->confirm_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
break;
default:
break;
}
break;
case PLINK_OPN_RCVD:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
reason = htole16(MESH_CAPABILITY_POLICY_VIOLATION);
case CLS_ACPT:
if (!reason)
reason = htole16(MESH_CLOSE_RCVD);
cand->reason = reason;
set_link_state(cand, PLINK_HOLDING);
cand->timeout = aconf->holding_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
plink_frame_tx(cand, PLINK_CLOSE, reason);
break;
case OPN_ACPT:
plink_frame_tx(cand, PLINK_CONFIRM, 0);
break;
case CNF_ACPT:
//del_timer(&cand->plink_timer);
set_link_state(cand, PLINK_ESTAB);
//mesh_plink_inc_estab_count(sdata);
//ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
derive_mtk(cand);
estab_peer_link(cand->peer_mac,
cand->mtk, sizeof(cand->mtk),
cand->mgtk, sizeof(cand->mgtk),
cand->mgtk_expiration,
cand->sup_rates,
cand->sup_rates_len,
cand->cookie);
changed |= mesh_set_ht_op_mode(cand->conf->mesh);
sae_debug(AMPE_DEBUG_FSM, "mesh plink with "
MACSTR " established\n", MAC2STR(cand->peer_mac));
break;
default:
break;
}
break;
case PLINK_CNF_RCVD:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
reason = htole16(MESH_CAPABILITY_POLICY_VIOLATION);
case CLS_ACPT:
if (!reason)
reason = htole16(MESH_CLOSE_RCVD);
cand->reason = reason;
set_link_state(cand, PLINK_HOLDING);
cand->timeout = aconf->holding_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
plink_frame_tx(cand, PLINK_CLOSE, reason);
break;
case OPN_ACPT:
set_link_state(cand, PLINK_ESTAB);
estab_peer_link(cand->peer_mac,
cand->mtk, sizeof(cand->mtk),
cand->mgtk, sizeof(cand->mgtk),
cand->mgtk_expiration, cand->sup_rates,
cand->sup_rates_len,
cand->cookie);
changed |= mesh_set_ht_op_mode(cand->conf->mesh);
//TODO: update the number of available peer "slots" in mesh config
//mesh_plink_inc_estab_count(sdata);
//ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
sae_debug(AMPE_DEBUG_FSM, "Mesh plink with "
MACSTR " ESTABLISHED\n", MAC2STR(cand->peer_mac));
plink_frame_tx(cand, PLINK_CONFIRM, 0);
break;
default:
break;
}
break;
case PLINK_ESTAB:
switch (event) {
case CLS_ACPT:
reason = htole16(MESH_CLOSE_RCVD);
cand->reason = reason;
set_link_state(cand, PLINK_HOLDING);
cand->timeout = aconf->holding_timeout_ms;
cand->t2 = srv_add_timeout(srvctx, SRV_MSEC(cand->timeout), plink_timer, cand);
changed |= mesh_set_ht_op_mode(cand->conf->mesh);
//TODO: update the number of available peer "slots" in mesh config
//if (deactivated)
// ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
plink_frame_tx(cand, PLINK_CLOSE, reason);
break;
case OPN_ACPT:
plink_frame_tx(cand, PLINK_CONFIRM, 0);
break;
default:
break;
}
break;
case PLINK_HOLDING:
switch (event) {
case CLS_ACPT:
//if (del_timer(&cand->plink_timer))
// cand->ignore_plink_timer = 1;
fsm_restart(cand);
break;
case OPN_ACPT:
case CNF_ACPT:
case OPN_RJCT:
case CNF_RJCT:
reason = cand->reason;
plink_frame_tx(cand, PLINK_CLOSE, reason);
break;
default:
break;
}
break;
default:
sae_debug(AMPE_DEBUG_FSM, "Unsupported event transition %d", event);
break;
}
if (changed)
meshd_set_mesh_conf(cand->conf->mesh, changed);
}
