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should have all rfcomm channel states coverd

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This commit is contained in:
matthias.ringwald 2011-06-24 20:06:47 +00:00
parent 8daabc2ea1
commit 2668327354
1 changed files with 44 additions and 28 deletions
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72
src/rfcomm.c
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@ -95,12 +95,15 @@ typedef enum {
typedef enum {
RFCOMM_CHANNEL_CLOSED = 1,
RFCOMM_CHANNEL_SEND_DM,
RFCOMM_CHANNEL_W4_MULTIPLEXER,
RFCOMM_CHANNEL_W4_CLIENT_AFTER_SABM, // received SABM
RFCOMM_CHANNEL_SEND_UA,
RFCOMM_CHANNEL_W4_CLIENT_AFTER_PN_CMD, // received PN_CMD
RFCOMM_CHANNEL_W4_PN_BEFORE_OPEN,
RFCOMM_CHANNEL_W4_PN_AFTER_OPEN,
RFCOMM_CHANNEL_W4_PN_RSP,
RFCOMM_CHANNEL_SEND_PN_RSP_W4_SABM_OR_PN_CMD,
RFCOMM_CHANNEL_W4_SABM_OR_PN_CMD,
RFCOMM_CHANNEL_SEND_SABM_W4_UA,
RFCOMM_CHANNEL_W4_UA,
@ -991,10 +994,8 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
// channel already prepared by incoming PN_CMD
if (rfChannel && rfChannel->state == RFCOMM_CHANNEL_W4_SABM_OR_PN_CMD){
// confirm
log_dbg("-> Sending UA #%u\n", frame_dlci);
rfcomm_send_ua(multiplexer, frame_dlci);
rfChannel->state = RFCOMM_CHANNEL_W4_MSC_CMD;
rfChannel->state = RFCOMM_CHANNEL_SEND_UA;
break;
}
// new channel
@ -1010,6 +1011,8 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
rfcomm_emit_connection_request(rfChannel);
// TODO: if client max frame size is smaller than RFCOMM_DEFAULT_SIZE, send PN
break;
}
} else {
@ -1269,8 +1272,9 @@ void rfcomm_run(void){
linked_item_t *it;
for (it = (linked_item_t *) rfcomm_channels; it ; it = it->next){
rfcomm_channel_t * channel = ((rfcomm_channel_t *) it);
rfcomm_multiplexer_t * multiplexer = channel->multiplexer;
if (!l2cap_can_send_packet_now(channel->multiplexer->l2cap_cid)) continue;
if (!l2cap_can_send_packet_now(multiplexer->l2cap_cid)) continue;
switch (channel->state){
@ -1279,46 +1283,45 @@ void rfcomm_run(void){
// this can then called after connection open/fail to handle all outgoing requests
if (channel->outgoing && channel->multiplexer->state == RFCOMM_MULTIPLEXER_OPEN) {
log_dbg("Sending UIH Parameter Negotiation Command for #%u\n", channel->dlci );
rfcomm_send_uih_pn_command(channel->multiplexer, channel->dlci, channel->max_frame_size);
rfcomm_send_uih_pn_command(multiplexer, channel->dlci, channel->max_frame_size);
channel->state = RFCOMM_CHANNEL_W4_PN_RSP;
}
break;
case RFCOMM_CHANNEL_SEND_SABM_W4_UA:
log_dbg("Sending SABM #%u\n", channel->dlci);
rfcomm_send_sabm(channel->multiplexer, channel->dlci);
rfcomm_send_sabm(multiplexer, channel->dlci);
channel->state = RFCOMM_CHANNEL_W4_UA;
break;
case RFCOMM_CHANNEL_SEND_MSC_CMD_W4_MSC_CMD_OR_MSC_RSP:
log_dbg("Sending MSC CMD for #%u (RFCOMM_CHANNEL_W4_MSC_CMD_OR_MSC_RSP)\n", channel->dlci);
rfcomm_send_uih_msc_cmd(channel->multiplexer, channel->dlci , 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
rfcomm_send_uih_msc_cmd(multiplexer, channel->dlci , 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
channel->state = RFCOMM_CHANNEL_W4_MSC_CMD_OR_MSC_RSP;
break;
case RFCOMM_CHANNEL_SEND_MSC_RSP_W4_MSC_RSP:
// outgoing channel
log_dbg("Sending MSC RSP for #%u\n", channel->dlci);
rfcomm_send_uih_msc_rsp(channel->multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
rfcomm_send_uih_msc_rsp(multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
channel->state = RFCOMM_CHANNEL_W4_MSC_RSP;
break;
case RFCOMM_CHANNEL_SEND_MSC_RSP_MSC_CMD_W4_CREDITS:
// incoming channel
log_dbg("-> Sending MSC RSP for #%u\n", channel->dlci);
rfcomm_send_uih_msc_rsp(channel->multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
rfcomm_send_uih_msc_rsp(multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
channel->state = RFCOMM_CHANNEL_SEND_MSC_CMD_SEND_CREDITS;
break;
case RFCOMM_CHANNEL_SEND_MSC_CMD_SEND_CREDITS:
// start our negotiation
log_dbg("Sending MSC CMD for #%u (but should wait for l2cap credits)\n", channel->dlci);
rfcomm_send_uih_msc_cmd(channel->multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
rfcomm_send_uih_msc_cmd(multiplexer, channel->dlci, 0x8d); // ea=1,fc=0,rtc=1,rtr=1,ic=0,dv=1
channel->state = RFCOMM_CHANNEL_SEND_CREDITS;
break;
case RFCOMM_CHANNEL_SEND_CREDITS:
log_dbg("Providing credits for #%u\n", channel->dlci);
rfcomm_channel_provide_credits(channel);
@ -1330,7 +1333,30 @@ void rfcomm_run(void){
log_dbg("Waiting for credits for #%u\n", channel->dlci);
}
break;
case RFCOMM_CHANNEL_SEND_DM:
log_dbg("Sending DM_PF for #%u\n", channel->dlci);
rfcomm_send_dm_pf(multiplexer, channel->dlci);
// remove from list
linked_list_remove( &rfcomm_channels, (linked_item_t *) channel);
// free channel
free(channel);
rfcomm_multiplexer_prepare_idle_timer(multiplexer);
break;
case RFCOMM_CHANNEL_SEND_UA:
log_dbg("Sending UA #%u\n", channel->dlci);
rfcomm_send_ua(multiplexer, channel->dlci);
channel->state = RFCOMM_CHANNEL_W4_MSC_CMD;
break;
case RFCOMM_CHANNEL_SEND_PN_RSP_W4_SABM_OR_PN_CMD:
log_dbg("Sending UIH Parameter Negotiation Respond for #%u\n", channel->dlci);
rfcomm_send_uih_pn_response(multiplexer, channel->dlci, channel->pn_priority, channel->max_frame_size);
// wait for SABM #channel or other UIH PN
channel->state = RFCOMM_CHANNEL_W4_SABM_OR_PN_CMD;
break;
default:
break;
}
@ -1513,15 +1539,11 @@ void rfcomm_accept_connection_internal(uint16_t rfcomm_cid){
if (!channel) return;
switch (channel->state) {
case RFCOMM_CHANNEL_W4_CLIENT_AFTER_SABM:
channel->state = RFCOMM_CHANNEL_W4_MSC_CMD;
log_dbg("-> Sending UA #%u\n", channel->dlci);
rfcomm_send_ua(channel->multiplexer, channel->dlci);
channel->state = RFCOMM_CHANNEL_SEND_UA;
break;
case RFCOMM_CHANNEL_W4_CLIENT_AFTER_PN_CMD:
log_dbg("-> Sending UIH Parameter Negotiation Respond for #%u\n", channel->dlci);
rfcomm_send_uih_pn_response(channel->multiplexer, channel->dlci, channel->pn_priority, channel->max_frame_size);
// wait for SABM #channel or other UIH PN
channel->state = RFCOMM_CHANNEL_W4_SABM_OR_PN_CMD;
channel->state = RFCOMM_CHANNEL_SEND_PN_RSP_W4_SABM_OR_PN_CMD;
break;
default:
break;
}
@ -1531,17 +1553,11 @@ void rfcomm_decline_connection_internal(uint16_t rfcomm_cid){
log_dbg("Received Decline Connction\n");
rfcomm_channel_t * channel = rfcomm_channel_for_rfcomm_cid(rfcomm_cid);
if (!channel) return;
rfcomm_multiplexer_t * multiplexer = channel->multiplexer;
switch (channel->state) {
case RFCOMM_CHANNEL_W4_CLIENT_AFTER_SABM:
case RFCOMM_CHANNEL_W4_CLIENT_AFTER_PN_CMD:
log_dbg("-> Sending DM_PF for #%u\n", channel->dlci);
rfcomm_send_dm_pf(channel->multiplexer, channel->dlci);
// remove from list
linked_list_remove( &rfcomm_channels, (linked_item_t *) channel);
// free channel
free(channel);
rfcomm_multiplexer_prepare_idle_timer(multiplexer);
channel->state = RFCOMM_CHANNEL_SEND_DM;
break;
default:
break;
}