int rtcfg_main_state_client_0(int ifindex, RTCFG_EVENT event_id,
void* event_data)
{
struct rtskb *rtskb = (struct rtskb *)event_data;
struct rt_proc_call *call = (struct rt_proc_call *)event_data;
switch (event_id) {
case RTCFG_CMD_DETACH:
rtcfg_client_detach(ifindex, call);
break;
case RTCFG_FRM_STAGE_1_CFG:
rtcfg_client_recv_stage_1(ifindex, rtskb);
break;
case RTCFG_FRM_ANNOUNCE_NEW:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_READY:
if (rtcfg_client_recv_ready(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
break;
default:
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown event %s for rtdev %d in %s()\n",
rtcfg_event[event_id], ifindex, __FUNCTION__);
return -EINVAL;
}
return 0;
}
static int rtcfg_client_get_frag(int ifindex, struct rt_proc_call *call)
{
struct rtcfg_device *rtcfg_dev = &device[ifindex];
if (test_bit(RTCFG_FLAG_STAGE_2_DATA, &rtcfg_dev->flags) == 0) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -EINVAL;
}
rtcfg_send_ack(ifindex);
if (rtcfg_dev->spec.clt.cfg_offs >= rtcfg_dev->spec.clt.cfg_len) {
if (rtcfg_dev->stations_found == rtcfg_dev->other_stations) {
rtpc_complete_call(call, 0);
rtcfg_next_main_state(ifindex,
test_bit(RTCFG_FLAG_READY,
&rtcfg_dev->flags) ?
RTCFG_MAIN_CLIENT_READY : RTCFG_MAIN_CLIENT_2);
} else {
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_ALL_FRAMES);
rtcfg_queue_blocking_call(ifindex, call);
}
} else
rtcfg_queue_blocking_call(ifindex, call);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -CALL_PENDING;
}
int rtcfg_main_state_client_all_known(int ifindex, RTCFG_EVENT event_id,
void* event_data)
{
struct rtskb *rtskb = (struct rtskb *)event_data;
struct rt_proc_call *call = (struct rt_proc_call *)event_data;
switch (event_id) {
case RTCFG_CMD_ANNOUNCE:
return rtcfg_client_get_frag(ifindex, call);
case RTCFG_CMD_DETACH:
rtcfg_client_detach(ifindex, call);
break;
case RTCFG_FRM_STAGE_2_CFG_FRAG:
rtcfg_client_recv_stage_2_frag(ifindex, rtskb);
break;
case RTCFG_FRM_READY:
if (rtcfg_client_recv_ready(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
break;
case RTCFG_FRM_ANNOUNCE_NEW:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0) {
rtcfg_send_announce_reply(ifindex,
rtskb->mac.ethernet->h_source);
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
}
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_DEAD_STATION:
rtcfg_client_recv_dead_station(ifindex, rtskb);
break;
case RTCFG_FRM_STAGE_1_CFG:
/* ignore */
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
kfree_rtskb(rtskb);
break;
default:
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown event %s for rtdev %d in %s()\n",
rtcfg_event[event_id], ifindex, __FUNCTION__);
return -EINVAL;
}
return 0;
}
int rtcfg_main_state_client_ready(int ifindex, RTCFG_EVENT event_id,
void* event_data)
{
struct rtskb *rtskb = (struct rtskb *)event_data;
struct rt_proc_call *call = (struct rt_proc_call *)event_data;
struct rtcfg_device *rtcfg_dev;
switch (event_id) {
case RTCFG_CMD_DETACH:
rtcfg_client_detach(ifindex, call);
break;
case RTCFG_FRM_READY:
if (rtcfg_client_recv_ready(ifindex, rtskb) == 0) {
rtcfg_dev = &device[ifindex];
if (rtcfg_dev->stations_ready == rtcfg_dev->other_stations)
rtcfg_complete_cmd(ifindex, RTCFG_CMD_READY, 0);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
}
break;
case RTCFG_FRM_ANNOUNCE_NEW:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0) {
rtcfg_send_announce_reply(ifindex,
rtskb->mac.ethernet->h_source);
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
}
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_DEAD_STATION:
rtcfg_client_recv_dead_station(ifindex, rtskb);
break;
case RTCFG_FRM_STAGE_1_CFG:
rtcfg_client_update_server(ifindex, rtskb);
break;
default:
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown event %s for rtdev %d in %s()\n",
rtcfg_event[event_id], ifindex, __FUNCTION__);
return -EINVAL;
}
return 0;
}
/* releases rtcfg_dev->dev_mutex on return */
static void rtcfg_client_detach(int ifindex, struct rt_proc_call *call)
{
struct rtcfg_device *rtcfg_dev = &device[ifindex];
struct rtcfg_cmd *cmd_event;
cmd_event = rtpc_get_priv(call, struct rtcfg_cmd);
cmd_event->args.detach.station_addr_list =
rtcfg_dev->spec.clt.station_addr_list;
cmd_event->args.detach.stage2_chain = rtcfg_dev->spec.clt.stage2_chain;
while (1) {
call = rtcfg_dequeue_blocking_call(ifindex);
if (call == NULL)
break;
rtpc_complete_call(call, -ENODEV);
}
if (rtcfg_dev->flags & FLAG_TIMER_STARTED) {
/* It's safe to kill the task, it either waits for dev_mutex or the
next period. */
rtdm_task_destroy(&rtcfg_dev->timer_task);
}
rtcfg_reset_device(ifindex);
rtcfg_next_main_state(cmd_event->internal.data.ifindex, RTCFG_MAIN_OFF);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
}
/* Notes:
* o On success, rtcfg_client_recv_ready returns without releasing the
* device lock.
*/
static int rtcfg_client_recv_ready(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_device *rtcfg_dev = &device[ifindex];
u32 i;
if (rtskb->len < sizeof(struct rtcfg_frm_simple)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid ready frame\n");
kfree_rtskb(rtskb);
return -EINVAL;
}
for (i = 0; i < rtcfg_dev->stations_found; i++)
/* Ethernet-specific! */
if (memcmp(rtcfg_dev->spec.clt.station_addr_list[i].mac_addr,
rtskb->mac.ethernet->h_source, ETH_ALEN) == 0) {
if ((rtcfg_dev->spec.clt.station_addr_list[i].flags &
_RTCFG_FLAG_READY) == 0) {
rtcfg_dev->spec.clt.station_addr_list[i].flags |=
_RTCFG_FLAG_READY;
rtcfg_dev->stations_ready++;
}
break;
}
kfree_rtskb(rtskb);
return 0;
}
/* releases rtcfg_dev->dev_mutex on return */
static void rtcfg_client_detach(int ifindex, struct rt_proc_call *call)
{
struct rtcfg_device *rtcfg_dev = &device[ifindex];
struct rtcfg_cmd *cmd_event;
cmd_event = rtpc_get_priv(call, struct rtcfg_cmd);
cmd_event->args.detach.station_addr_list =
rtcfg_dev->spec.clt.station_addr_list;
cmd_event->args.detach.stage2_chain = rtcfg_dev->spec.clt.stage2_chain;
while (1) {
call = rtcfg_dequeue_blocking_call(ifindex);
if (call == NULL)
break;
rtpc_complete_call(call, -ENODEV);
}
if (test_and_clear_bit(FLAG_TIMER_STARTED, &rtcfg_dev->flags))
rtdm_timer_destroy(&rtcfg_dev->timer);
rtcfg_reset_device(ifindex);
rtcfg_next_main_state(cmd_event->internal.data.ifindex, RTCFG_MAIN_OFF);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
}
static void rtcfg_client_recv_stage_2_frag(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_stage_2_cfg_frag *stage_2_frag;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
size_t data_len;
if (rtskb->len < sizeof(struct rtcfg_frm_stage_2_cfg_frag)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_2_cfg_frag frame\n");
kfree_rtskb(rtskb);
return;
}
stage_2_frag = (struct rtcfg_frm_stage_2_cfg_frag *)rtskb->data;
__rtskb_pull(rtskb, sizeof(struct rtcfg_frm_stage_2_cfg_frag));
data_len = MIN(rtcfg_dev->spec.clt.cfg_len - rtcfg_dev->spec.clt.cfg_offs,
rtskb->len);
if (test_bit(RTCFG_FLAG_STAGE_2_DATA, &rtcfg_dev->flags) == 0) {
RTCFG_DEBUG(1, "RTcfg: unexpected stage 2 fragment, we did not "
"request any data!\n");
} else if (rtcfg_dev->spec.clt.cfg_offs !=
ntohl(stage_2_frag->frag_offs)) {
RTCFG_DEBUG(1, "RTcfg: unexpected stage 2 fragment (expected: %d, "
"received: %d)\n", rtcfg_dev->spec.clt.cfg_offs,
ntohl(stage_2_frag->frag_offs));
rtcfg_send_ack(ifindex);
rtcfg_dev->spec.clt.packet_counter = 0;
} else {
rtcfg_client_queue_frag(ifindex, rtskb, data_len);
rtskb = NULL;
}
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
if (rtskb != NULL)
kfree_rtskb(rtskb);
}
void task1(void *cookie)
{
long varl;
rtdm_mutex_lock(&mutex);
rtdm_sem_down(&sem);
rtdm_mutex_unlock(&mutex);
rtdm_sem_up(&sem);
rtdm_sem_down(&sem);
while (1) {
rtdm_mutex_lock(&mutex);
rtdm_mutex_lock(&mutex);
varl = ++var;
rtdm_mutex_unlock(&mutex);
rtdm_mutex_unlock(&mutex);
while(varl == var) rt_sleep(nano2count(TIMEOUT));
if ((var - varl) != 1) {
rt_printk("WRONG INCREMENT OF VARIABLE IN TASK1\n");
break;
}
}
}
static void rtcfg_client_recv_stage_2_cfg(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_stage_2_cfg *stage_2_cfg;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
size_t data_len;
int ret;
if (rtskb->len < sizeof(struct rtcfg_frm_stage_2_cfg)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_2_cfg frame\n");
kfree_rtskb(rtskb);
return;
}
stage_2_cfg = (struct rtcfg_frm_stage_2_cfg *)rtskb->data;
__rtskb_pull(rtskb, sizeof(struct rtcfg_frm_stage_2_cfg));
if (stage_2_cfg->heartbeat_period) {
ret = rtdm_timer_init(&rtcfg_dev->timer, rtcfg_timer, "rtcfg-timer");
if (ret == 0) {
ret = rtdm_timer_start(&rtcfg_dev->timer,
XN_INFINITE,
(nanosecs_rel_t)ntohs(stage_2_cfg->heartbeat_period) *
1000000,
RTDM_TIMERMODE_RELATIVE);
if (ret < 0)
rtdm_timer_destroy(&rtcfg_dev->timer);
}
if (ret < 0)
/*ERRMSG*/rtdm_printk("RTcfg: unable to create timer task\n");
else
set_bit(FLAG_TIMER_STARTED, &rtcfg_dev->flags);
}
/* add server to station list */
if (rtcfg_add_to_station_list(rtcfg_dev,
rtskb->mac.ethernet->h_source, stage_2_cfg->flags) < 0) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unable to process stage_2_cfg frage\n");
kfree_rtskb(rtskb);
return;
}
rtcfg_dev->other_stations = ntohl(stage_2_cfg->stations);
rtcfg_dev->spec.clt.cfg_len = ntohl(stage_2_cfg->cfg_len);
data_len = MIN(rtcfg_dev->spec.clt.cfg_len, rtskb->len);
if (test_bit(RTCFG_FLAG_STAGE_2_DATA, &rtcfg_dev->flags) &&
(data_len > 0)) {
rtcfg_client_queue_frag(ifindex, rtskb, data_len);
rtskb = NULL;
if (rtcfg_dev->stations_found == rtcfg_dev->other_stations)
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_ALL_KNOWN);
} else {
if (rtcfg_dev->stations_found == rtcfg_dev->other_stations) {
rtcfg_complete_cmd(ifindex, RTCFG_CMD_ANNOUNCE, 0);
rtcfg_next_main_state(ifindex,
test_bit(RTCFG_FLAG_READY, &rtcfg_dev->flags) ?
RTCFG_MAIN_CLIENT_READY : RTCFG_MAIN_CLIENT_2);
} else
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_ALL_FRAMES);
rtcfg_send_ack(ifindex);
}
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
if (rtskb != NULL)
kfree_rtskb(rtskb);
}
int rtcfg_main_state_client_1(int ifindex, RTCFG_EVENT event_id,
void* event_data)
{
struct rtcfg_device *rtcfg_dev = &device[ifindex];
struct rtskb *rtskb = (struct rtskb *)event_data;
struct rt_proc_call *call = (struct rt_proc_call *)event_data;
struct rtcfg_cmd *cmd_event;
int ret;
switch (event_id) {
case RTCFG_CMD_CLIENT:
/* second trial (buffer was probably too small) */
rtcfg_queue_blocking_call(ifindex,
(struct rt_proc_call *)event_data);
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_0);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -CALL_PENDING;
case RTCFG_CMD_ANNOUNCE:
cmd_event = rtpc_get_priv(call, struct rtcfg_cmd);
if (cmd_event->args.announce.burstrate == 0) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -EINVAL;
}
rtcfg_queue_blocking_call(ifindex,
(struct rt_proc_call *)event_data);
if (cmd_event->args.announce.flags & _RTCFG_FLAG_STAGE_2_DATA)
set_bit(RTCFG_FLAG_STAGE_2_DATA, &rtcfg_dev->flags);
if (cmd_event->args.announce.flags & _RTCFG_FLAG_READY)
set_bit(RTCFG_FLAG_READY, &rtcfg_dev->flags);
if (cmd_event->args.announce.burstrate < rtcfg_dev->burstrate)
rtcfg_dev->burstrate = cmd_event->args.announce.burstrate;
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_ANNOUNCED);
ret = rtcfg_send_announce_new(ifindex);
if (ret < 0) {
rtcfg_dequeue_blocking_call(ifindex);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return ret;
}
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -CALL_PENDING;
case RTCFG_CMD_DETACH:
rtcfg_client_detach(ifindex, call);
break;
case RTCFG_FRM_ANNOUNCE_NEW:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0) {
rtcfg_send_announce_reply(ifindex,
rtskb->mac.ethernet->h_source);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
}
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_ANNOUNCE_REPLY:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_READY:
if (rtcfg_client_recv_ready(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
break;
case RTCFG_FRM_STAGE_1_CFG:
/* ignore */
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
break;
default:
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown event %s for rtdev %d in %s()\n",
rtcfg_event[event_id], ifindex, __FUNCTION__);
return -EINVAL;
}
return 0;
}
/* Notes:
* o rtcfg_client_recv_announce does not release the passed rtskb.
* o On success, rtcfg_client_recv_announce returns without releasing the
* device lock.
*/
static int rtcfg_client_recv_announce(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_announce *announce_frm;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
u32 i;
u32 announce_frm_addr;
int result;
announce_frm = (struct rtcfg_frm_announce *)rtskb->data;
if (rtskb->len < sizeof(struct rtcfg_frm_announce)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid announce frame (id: %d)\n",
announce_frm->head.id);
return -EINVAL;
}
switch (announce_frm->addr_type) {
#if IS_ENABLED(CONFIG_XENO_DRIVERS_NET_RTIPV4)
case RTCFG_ADDR_IP:
if (rtskb->len < sizeof(struct rtcfg_frm_announce) +
RTCFG_ADDRSIZE_IP) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid announce frame "
"(id: %d)\n", announce_frm->head.id);
return -EINVAL;
}
memcpy(&announce_frm_addr, announce_frm->addr, 4);
/* update routing table */
rt_ip_route_add_host(announce_frm_addr,
rtskb->mac.ethernet->h_source, rtskb->rtdev);
announce_frm = (struct rtcfg_frm_announce *)
(((u8 *)announce_frm) + RTCFG_ADDRSIZE_IP);
break;
#endif /* CONFIG_XENO_DRIVERS_NET_RTIPV4 */
case RTCFG_ADDR_MAC:
/* nothing to do */
break;
default:
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown addr_type %d in %s()\n",
announce_frm->addr_type, __FUNCTION__);
return -EINVAL;
}
for (i = 0; i < rtcfg_dev->stations_found; i++)
/* Ethernet-specific! */
if (memcmp(rtcfg_dev->spec.clt.station_addr_list[i].mac_addr,
rtskb->mac.ethernet->h_source, ETH_ALEN) == 0)
return 0;
result = rtcfg_add_to_station_list(rtcfg_dev,
rtskb->mac.ethernet->h_source, announce_frm->flags);
if (result < 0)
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return result;
}
static void rtcfg_client_recv_stage_1(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_stage_1_cfg *stage_1_cfg;
struct rt_proc_call *call;
struct rtcfg_cmd *cmd_event;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
u8 addr_type;
int ret;
if (rtskb->len < sizeof(struct rtcfg_frm_stage_1_cfg)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_1_cfg frame\n");
kfree_rtskb(rtskb);
return;
}
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)rtskb->data;
__rtskb_pull(rtskb, sizeof(struct rtcfg_frm_stage_1_cfg));
addr_type = stage_1_cfg->addr_type;
switch (stage_1_cfg->addr_type) {
#if IS_ENABLED(CONFIG_XENO_DRIVERS_NET_RTIPV4)
case RTCFG_ADDR_IP: {
struct rtnet_device *rtdev, *tmp;
u32 daddr, saddr, mask, bcast;
if (rtskb->len < sizeof(struct rtcfg_frm_stage_1_cfg) +
2*RTCFG_ADDRSIZE_IP) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_1_cfg "
"frame\n");
kfree_rtskb(rtskb);
return;
}
rtdev = rtskb->rtdev;
memcpy(&daddr, stage_1_cfg->client_addr, 4);
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)
(((u8 *)stage_1_cfg) + RTCFG_ADDRSIZE_IP);
memcpy(&saddr, stage_1_cfg->server_addr, 4);
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)
(((u8 *)stage_1_cfg) + RTCFG_ADDRSIZE_IP);
__rtskb_pull(rtskb, 2*RTCFG_ADDRSIZE_IP);
/* Broadcast: IP is used to address client */
if (rtskb->pkt_type == PACKET_BROADCAST) {
/* directed to us? */
if (daddr != rtdev->local_ip) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
return;
}
/* Unicast: IP address is assigned by the server */
} else {
/* default netmask */
if (ntohl(daddr) <= 0x7FFFFFFF) /* 127.255.255.255 */
mask = 0x000000FF; /* 255.0.0.0 */
else if (ntohl(daddr) <= 0xBFFFFFFF) /* 191.255.255.255 */
mask = 0x0000FFFF; /* 255.255.0.0 */
else
mask = 0x00FFFFFF; /* 255.255.255.0 */
bcast = daddr | (~mask);
rt_ip_route_del_all(rtdev); /* cleanup routing table */
rtdev->local_ip = daddr;
rtdev->broadcast_ip = bcast;
if ((tmp = rtdev_get_loopback()) != NULL) {
rt_ip_route_add_host(daddr, tmp->dev_addr, tmp);
rtdev_dereference(tmp);
}
if (rtdev->flags & IFF_BROADCAST)
rt_ip_route_add_host(bcast, rtdev->broadcast, rtdev);
}
/* update routing table */
rt_ip_route_add_host(saddr, rtskb->mac.ethernet->h_source, rtdev);
rtcfg_dev->spec.clt.srv_addr.ip_addr = saddr;
break;
}
#endif /* CONFIG_XENO_DRIVERS_NET_RTIPV4 */
case RTCFG_ADDR_MAC:
/* nothing to do */
break;
default:
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown addr_type %d in %s()\n",
stage_1_cfg->addr_type, __FUNCTION__);
kfree_rtskb(rtskb);
return;
}
rtcfg_dev->spec.clt.addr_type = addr_type;
/* Ethernet-specific */
memcpy(rtcfg_dev->spec.clt.srv_mac_addr,
rtskb->mac.ethernet->h_source, ETH_ALEN);
rtcfg_dev->burstrate = stage_1_cfg->burstrate;
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_1);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
while (1) {
call = rtcfg_dequeue_blocking_call(ifindex);
if (call == NULL)
break;
cmd_event = rtpc_get_priv(call, struct rtcfg_cmd);
if (cmd_event->internal.data.event_id == RTCFG_CMD_CLIENT) {
ret = 0;
/* note: only the first pending call gets data */
if ((rtskb != NULL) &&
(cmd_event->args.client.buffer_size > 0)) {
ret = ntohs(stage_1_cfg->cfg_len);
cmd_event->args.client.rtskb = rtskb;
rtskb = NULL;
}
} else
ret = -EINVAL;
rtpc_complete_call(call, ret);
}
if (rtskb)
kfree_rtskb(rtskb);
}
static int rtdmtest_ioctl(struct rtdm_dev_context *context,
rtdm_user_info_t *user_info,
unsigned int request,
void *arg)
{
struct rtdmtest_context *ctx;
struct rttst_rtdmtest_config config_buf, *config;
rtdm_toseq_t toseq_local, *toseq = NULL;
int i, err = 0;
ctx = (struct rtdmtest_context *)context->dev_private;
switch (request) {
case RTTST_RTIOC_RTDMTEST_SEM_TIMEDDOWN:
case RTTST_RTIOC_RTDMTEST_EVENT_TIMEDWAIT:
case RTTST_RTIOC_RTDMTEST_MUTEX_TIMEDTEST:
case RTTST_RTIOC_RTDMTEST_MUTEX_TEST:
config = arg;
if (user_info) {
if (rtdm_safe_copy_from_user
(user_info, &config_buf, arg,
sizeof(struct rttst_rtdmtest_config)) < 0)
return -EFAULT;
config = &config_buf;
}
if (!config->seqcount)
config->seqcount = 1;
if (config->timeout && config->seqcount > 1) {
toseq = &toseq_local;
rtdm_toseq_init(toseq, config->timeout);
}
switch(request) {
case RTTST_RTIOC_RTDMTEST_SEM_TIMEDDOWN:
for (i = 0; i < config->seqcount; i++) {
err = rtdm_sem_timeddown(&ctx->sem,
config->timeout,
toseq);
if (err)
break;
}
break;
case RTTST_RTIOC_RTDMTEST_EVENT_TIMEDWAIT:
for (i = 0; i < config->seqcount; i++) {
err = rtdm_event_timedwait(&ctx->event,
config->timeout,
toseq);
if (err)
break;
}
break;
case RTTST_RTIOC_RTDMTEST_MUTEX_TIMEDTEST:
for (i = 0; i < config->seqcount; i++) {
err = rtdm_mutex_timedlock(&ctx->mutex,
config->timeout,
toseq);
if (err)
break;
if (config->delay_jiffies) {
__set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(config->delay_jiffies);
}
rtdm_lock_count++;
rtdm_mutex_unlock(&ctx->mutex);
}
break;
case RTTST_RTIOC_RTDMTEST_MUTEX_TEST:
for (i = 0; i < config->seqcount; i++) {
if ((err = rtdm_mutex_lock(&ctx->mutex)))
break;
rtdm_lock_count++;
rtdm_mutex_unlock(&ctx->mutex);
}
break;
}
break;
case RTTST_RTIOC_RTDMTEST_SEM_DOWN:
err = rtdm_sem_down(&ctx->sem);
break;
case RTTST_RTIOC_RTDMTEST_SEM_UP:
rtdm_sem_up(&ctx->sem);
break;
case RTTST_RTIOC_RTDMTEST_SEM_DESTROY:
rtdm_sem_destroy(&ctx->sem);
break;
case RTTST_RTIOC_RTDMTEST_EVENT_WAIT:
err = rtdm_event_wait(&ctx->event);
break;
case RTTST_RTIOC_RTDMTEST_EVENT_SIGNAL:
rtdm_event_signal(&ctx->event);
break;
case RTTST_RTIOC_RTDMTEST_EVENT_DESTROY:
rtdm_event_destroy(&ctx->event);
break;
case RTTST_RTIOC_RTDMTEST_MUTEX_DESTROY:
rtdm_mutex_destroy(&ctx->mutex);
break;
case RTTST_RTIOC_RTDMTEST_MUTEX_GETSTAT:
printk("RTTST_RTIOC_RTDMTEST_MUTEX_GETSTAT\n");
if (user_info)
config = &config_buf;
else
config = arg;
config->seqcount = rtdm_lock_count;
if (user_info) {
if (rtdm_safe_copy_to_user
(user_info, arg, &config_buf,
sizeof(struct rttst_rtdmtest_config)) < 0)
return -EFAULT;
}
break;
case RTTST_RTIOC_RTDMTEST_NRTSIG_PEND:
rtdm_nrtsig_pend(&ctx->nrtsig);
break;
case RTTST_RTIOC_RTDMTEST_TASK_CREATE:
case RTTST_RTIOC_RTDMTEST_TASK_SET_PRIO:
config = arg;
if (user_info) {
if (rtdm_safe_copy_from_user
(user_info, &config_buf, arg,
sizeof(struct rttst_rtdmtest_config)) < 0)
return -EFAULT;
config = &config_buf;
}
if (request == RTTST_RTIOC_RTDMTEST_TASK_CREATE) {
task_period = config->timeout;
rtdm_task_init(&task, "RTDMTEST",
rtdmtest_task, (void *)config,
config->priority, 0);
} else {
rtdm_task_set_priority(&task, config->priority);
}
break;
case RTTST_RTIOC_RTDMTEST_TASK_DESTROY:
rtdm_task_destroy(&task);
rtdm_task_join_nrt(&task, 100);
break;
default:
printk("request=%d\n", request);
err = -ENOTTY;
}
return err;
}
void task2(void *cookie)
{
long i, max, varl;
nanosecs_abs_t t, dt;
rt_printk("TESTING TIMING OUT TIMEDLOCK ...");
for (max = i = 0; i < LOOPS; i++) {
t = rtdm_clock_read();
if (rtdm_mutex_timedlock(&mutex, DELAY, NULL) == -ETIMEDOUT) {
dt = rtdm_clock_read() - t - DELAY;
if (dt > max) {
max = dt;
}
} else {
break;
}
}
if (i == LOOPS) {
rt_printk(" OK [%lu (ns)].\n", max);
} else {
rt_printk(" NOT OK [MAXLAT %lu (ns)].\n", max);
}
rt_printk("TESTING FAILING TRY LOCK ...");
for (i = 0; i < LOOPS; i++) {
if (rtdm_mutex_timedlock(&mutex, RTDM_TIMEOUT_NONE, NULL) != -EWOULDBLOCK) {
break;
}
}
if (i == LOOPS) {
rt_printk(" OK.\n");
} else {
rt_printk(" NOT OK.\n", max);
}
rt_printk("TESTING SUCCEEDING TRY LOCK ...");
rtdm_sem_up(&sem);
for (i = 0; i < LOOPS; i++) {
if (!rtdm_mutex_timedlock(&mutex, RTDM_TIMEOUT_NONE, NULL)) {
rtdm_mutex_unlock(&mutex);
} else {
break;
}
}
if (i == LOOPS) {
rt_printk(" OK.\n");
} else {
rt_printk(" NOT OK.\n", max);
}
rt_printk("TESTING LOCK/UNLOCK ...");
rtdm_sem_up(&sem);
rtdm_sem_down(&sem);
for (i = 0; i < LOOPS; i++) {
if (rtdm_mutex_lock(&mutex)) {
break;
}
varl = ++var;
if (rtdm_mutex_lock(&mutex)) {
break;
}
rtdm_mutex_unlock(&mutex);
rtdm_mutex_unlock(&mutex);
while(varl == var) rt_sleep(nano2count(TIMEOUT));
if ((var - varl) != 1) {
rt_printk("WRONG INCREMENT OF VARIABLE IN TASK2\n");
break;
}
}
if (i == LOOPS) {
rt_printk(" OK.\n");
} else {
rt_printk(" NOT OK.\n", max);
}
rt_printk("TESTING NOT TIMING OUT TIMEDLOCK ...");
for (i = 0; i < LOOPS; i++) {
if (rtdm_mutex_timedlock(&mutex, DELAY, NULL)) {
break;
}
if (rtdm_mutex_lock(&mutex)) {
break;
}
varl = ++var;
rtdm_mutex_unlock(&mutex);
rtdm_mutex_unlock(&mutex);
while(varl == var) rt_sleep(nano2count(TIMEOUT));
if ((var - varl) != 1) {
rt_printk("WRONG INCREMENT OF VARIABLE IN TASK2\n");
break;
}
}
if (i == LOOPS) {
rt_printk(" OK.\n");
} else {
rt_printk(" NOT OK.\n", max);
}
}
static void rtcfg_client_recv_dead_station(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_dead_station *dead_station_frm;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
u32 i;
dead_station_frm = (struct rtcfg_frm_dead_station *)rtskb->data;
if (rtskb->len < sizeof(struct rtcfg_frm_dead_station)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid dead station frame\n");
kfree_rtskb(rtskb);
return;
}
switch (dead_station_frm->addr_type) {
#if IS_ENABLED(CONFIG_XENO_DRIVERS_NET_RTIPV4)
case RTCFG_ADDR_IP: {
u32 ip;
if (rtskb->len < sizeof(struct rtcfg_frm_dead_station) +
RTCFG_ADDRSIZE_IP) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid dead station frame\n");
kfree_rtskb(rtskb);
return;
}
memcpy(&ip, dead_station_frm->logical_addr, 4);
/* only delete remote IPs from routing table */
if (rtskb->rtdev->local_ip != ip)
rt_ip_route_del_host(ip, rtskb->rtdev);
dead_station_frm = (struct rtcfg_frm_dead_station *)
(((u8 *)dead_station_frm) + RTCFG_ADDRSIZE_IP);
break;
}
#endif /* CONFIG_XENO_DRIVERS_NET_RTIPV4 */
case RTCFG_ADDR_MAC:
/* nothing to do */
break;
default:
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown addr_type %d in %s()\n",
dead_station_frm->addr_type, __FUNCTION__);
kfree_rtskb(rtskb);
return;
}
for (i = 0; i < rtcfg_dev->stations_found; i++)
/* Ethernet-specific! */
if (memcmp(rtcfg_dev->spec.clt.station_addr_list[i].mac_addr,
dead_station_frm->physical_addr, ETH_ALEN) == 0) {
if ((rtcfg_dev->spec.clt.station_addr_list[i].flags &
_RTCFG_FLAG_READY) != 0)
rtcfg_dev->stations_ready--;
rtcfg_dev->stations_found--;
memmove(&rtcfg_dev->spec.clt.station_addr_list[i],
&rtcfg_dev->spec.clt.station_addr_list[i+1],
sizeof(struct rtcfg_station) *
(rtcfg_dev->stations_found - i));
if (rtcfg_dev->state == RTCFG_MAIN_CLIENT_ALL_KNOWN)
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_ANNOUNCED);
break;
}
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
}
int rtcfg_main_state_client_2(int ifindex, RTCFG_EVENT event_id,
void* event_data)
{
struct rtskb *rtskb = (struct rtskb *)event_data;
struct rt_proc_call *call = (struct rt_proc_call *)event_data;
struct rtcfg_device *rtcfg_dev;
switch (event_id) {
case RTCFG_CMD_READY:
rtcfg_dev = &device[ifindex];
if (rtcfg_dev->stations_ready == rtcfg_dev->other_stations)
rtpc_complete_call(call, 0);
else
rtcfg_queue_blocking_call(ifindex, call);
rtcfg_next_main_state(ifindex, RTCFG_MAIN_CLIENT_READY);
if (!test_and_set_bit(RTCFG_FLAG_READY, &rtcfg_dev->flags))
rtcfg_send_ready(ifindex);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
return -CALL_PENDING;
case RTCFG_CMD_DETACH:
rtcfg_client_detach(ifindex, call);
break;
case RTCFG_FRM_READY:
if (rtcfg_client_recv_ready(ifindex, rtskb) == 0)
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
break;
case RTCFG_FRM_ANNOUNCE_NEW:
if (rtcfg_client_recv_announce(ifindex, rtskb) == 0) {
rtcfg_send_announce_reply(ifindex,
rtskb->mac.ethernet->h_source);
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
}
kfree_rtskb(rtskb);
break;
case RTCFG_FRM_DEAD_STATION:
rtcfg_client_recv_dead_station(ifindex, rtskb);
break;
case RTCFG_FRM_STAGE_1_CFG:
/* ignore */
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
kfree_rtskb(rtskb);
break;
default:
rtdm_mutex_unlock(&device[ifindex].dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown event %s for rtdev %d in %s()\n",
rtcfg_event[event_id], ifindex, __FUNCTION__);
return -EINVAL;
}
return 0;
}
static void rtcfg_client_update_server(int ifindex, struct rtskb *rtskb)
{
struct rtcfg_frm_stage_1_cfg *stage_1_cfg;
struct rtcfg_device *rtcfg_dev = &device[ifindex];
if (rtskb->len < sizeof(struct rtcfg_frm_stage_1_cfg)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_1_cfg frame\n");
kfree_rtskb(rtskb);
return;
}
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)rtskb->data;
__rtskb_pull(rtskb, sizeof(struct rtcfg_frm_stage_1_cfg));
switch (stage_1_cfg->addr_type) {
#if IS_ENABLED(CONFIG_XENO_DRIVERS_NET_RTIPV4)
case RTCFG_ADDR_IP: {
struct rtnet_device *rtdev;
u32 daddr, saddr;
if (rtskb->len < sizeof(struct rtcfg_frm_stage_1_cfg) +
2*RTCFG_ADDRSIZE_IP) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: received invalid stage_1_cfg "
"frame\n");
kfree_rtskb(rtskb);
break;
}
rtdev = rtskb->rtdev;
memcpy(&daddr, stage_1_cfg->client_addr, 4);
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)
(((u8 *)stage_1_cfg) + RTCFG_ADDRSIZE_IP);
memcpy(&saddr, stage_1_cfg->server_addr, 4);
stage_1_cfg = (struct rtcfg_frm_stage_1_cfg *)
(((u8 *)stage_1_cfg) + RTCFG_ADDRSIZE_IP);
__rtskb_pull(rtskb, 2*RTCFG_ADDRSIZE_IP);
/* directed to us? */
if ((rtskb->pkt_type == PACKET_BROADCAST) &&
(daddr != rtdev->local_ip)) {
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
return;
}
/* update routing table */
rt_ip_route_add_host(saddr, rtskb->mac.ethernet->h_source, rtdev);
rtcfg_dev->spec.clt.srv_addr.ip_addr = saddr;
break;
}
#endif /* CONFIG_XENO_DRIVERS_NET_RTIPV4 */
case RTCFG_ADDR_MAC:
/* nothing to do */
break;
default:
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
RTCFG_DEBUG(1, "RTcfg: unknown addr_type %d in %s()\n",
stage_1_cfg->addr_type, __FUNCTION__);
kfree_rtskb(rtskb);
return;
}
/* Ethernet-specific */
memcpy(rtcfg_dev->spec.clt.srv_mac_addr,
rtskb->mac.ethernet->h_source, ETH_ALEN);
rtcfg_send_announce_reply(ifindex, rtskb->mac.ethernet->h_source);
rtdm_mutex_unlock(&rtcfg_dev->dev_mutex);
kfree_rtskb(rtskb);
}
