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gigaset: accept connection establishment messages in any order

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ISDN connection setup failed if the "connection active" and
"B channel up" messages from the device arrived in a different
order than expected. Modify the state machine to accept them in
any order.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
CC: stable <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tilman Schmidt 2009-07-01 11:20:57 +00:00 committed by David S. Miller
parent f8a68e752b
commit bceb0f126f
1 changed files with 19 additions and 23 deletions
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42
drivers/isdn/gigaset/ev-layer.c
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@ -294,32 +294,33 @@ struct reply_t gigaset_tab_cid[] =
{RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
{RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
{RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
{RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
{RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"},
{RSP_OK, 607,607, -1, 608,-1},
//{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE
{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
{RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
{RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}},
{RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}},
{RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}},
{RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
{EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
/* dialing */
{RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}},
{RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}},
{RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
/* optional dialing responses */
{EV_BC_OPEN, 650,650, -1, 651,-1},
{RSP_ZVLS, 608,651, 17, -1,-1, {ACT_DEBUG}},
{RSP_ZCTP, 609,651, -1, -1,-1, {ACT_DEBUG}},
{RSP_ZCPN, 609,651, -1, -1,-1, {ACT_DEBUG}},
{RSP_ZSAU, 650,651,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}},
/* connection established */
{RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
{RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
{EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
/* connect */
{RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}},
{RSP_ZSAU, 651,651,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT,
ACT_NOTIFY_BC_UP}},
{RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}},
{RSP_ZSAU, 751,751,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT,
ACT_NOTIFY_BC_UP}},
{EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}},
/* remote hangup */
{RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
{RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
{RSP_ZSAU, 650,651,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
{RSP_ZSAU, 750,751,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
{RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
/* hangup */
@ -358,7 +359,8 @@ struct reply_t gigaset_tab_cid[] =
{RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
{RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
{EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
{EV_BC_OPEN, 750,750, -1, 751,-1},
{EV_TIMEOUT, 750,751, -1, 0, 0, {ACT_CONNTIMEOUT}},
/* B channel closed (general case) */
{EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
@ -876,12 +878,6 @@ static void bchannel_down(struct bc_state *bcs)
static void bchannel_up(struct bc_state *bcs)
{
if (!(bcs->chstate & CHS_D_UP)) {
dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
bcs->chstate |= CHS_D_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
}
if (bcs->chstate & CHS_B_UP) {
dev_notice(bcs->cs->dev, "%s: B channel already up\n",
__func__);