Commit 088ec0cc authored by Tilman Schmidt's avatar Tilman Schmidt Committed by David S. Miller

gigaset: prepare for CAPI implementation

Reorganize the code of the Gigaset driver, moving all isdn4linux
dependencies to the source file i4l.c so that it can be replaced
by a file capi.c interfacing to Kernel CAPI instead.

Impact: refactoring, no functional change
Signed-off-by: default avatarTilman Schmidt <tilman@imap.cc>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7ecc59c1
......@@ -119,10 +119,7 @@ static inline int hdlc_loop(unsigned char c, unsigned char *src, int numbytes,
int inputstate = bcs->inputstate;
__u16 fcs = bcs->fcs;
struct sk_buff *skb = bcs->skb;
unsigned char error;
struct sk_buff *compskb;
int startbytes = numbytes;
int l;
if (unlikely(inputstate & INS_byte_stuff)) {
inputstate &= ~INS_byte_stuff;
......@@ -158,8 +155,8 @@ byte_stuff:
#endif
/* end of frame */
error = 1;
gigaset_rcv_error(NULL, cs, bcs);
gigaset_isdn_rcv_err(bcs);
dev_kfree_skb(skb);
} else if (!(inputstate & INS_have_data)) { /* 7E 7E */
#ifdef CONFIG_GIGASET_DEBUG
++bcs->emptycount;
......@@ -170,54 +167,39 @@ byte_stuff:
"7e----------------------------");
/* end of frame */
error = 0;
if (unlikely(fcs != PPP_GOODFCS)) {
dev_err(cs->dev,
"Checksum failed, %u bytes corrupted!\n",
skb->len);
compskb = NULL;
gigaset_rcv_error(compskb, cs, bcs);
error = 1;
gigaset_isdn_rcv_err(bcs);
dev_kfree_skb(skb);
} else if (likely(skb->len > 2)) {
__skb_trim(skb, skb->len - 2);
gigaset_skb_rcvd(bcs, skb);
} else {
if (likely((l = skb->len) > 2)) {
skb->tail -= 2;
skb->len -= 2;
} else {
dev_kfree_skb(skb);
skb = NULL;
inputstate |= INS_skip_frame;
if (l == 1) {
dev_err(cs->dev,
"invalid packet size (1)!\n");
error = 1;
gigaset_rcv_error(NULL,
cs, bcs);
}
}
if (likely(!(error ||
(inputstate &
INS_skip_frame)))) {
gigaset_rcv_skb(skb, cs, bcs);
if (skb->len) {
dev_err(cs->dev,
"invalid packet size (%d)\n", skb->len);
gigaset_isdn_rcv_err(bcs);
}
dev_kfree_skb(skb);
}
}
if (unlikely(error))
if (skb)
dev_kfree_skb(skb);
fcs = PPP_INITFCS;
inputstate &= ~(INS_have_data | INS_skip_frame);
if (unlikely(bcs->ignore)) {
inputstate |= INS_skip_frame;
skb = NULL;
} else if (likely((skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)) {
skb_reserve(skb, HW_HDR_LEN);
} else {
dev_warn(cs->dev,
"could not allocate new skb\n");
inputstate |= INS_skip_frame;
skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
if (skb != NULL) {
skb_reserve(skb, cs->hw_hdr_len);
} else {
dev_warn(cs->dev,
"could not allocate new skb\n");
inputstate |= INS_skip_frame;
}
}
break;
......@@ -314,18 +296,21 @@ static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes,
/* pass data up */
if (likely(inputstate & INS_have_data)) {
if (likely(!(inputstate & INS_skip_frame))) {
gigaset_rcv_skb(skb, cs, bcs);
gigaset_skb_rcvd(bcs, skb);
}
inputstate &= ~(INS_have_data | INS_skip_frame);
if (unlikely(bcs->ignore)) {
inputstate |= INS_skip_frame;
skb = NULL;
} else if (likely((skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN))
!= NULL)) {
skb_reserve(skb, HW_HDR_LEN);
} else {
dev_warn(cs->dev, "could not allocate new skb\n");
inputstate |= INS_skip_frame;
skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
if (skb != NULL) {
skb_reserve(skb, cs->hw_hdr_len);
} else {
dev_warn(cs->dev,
"could not allocate new skb\n");
inputstate |= INS_skip_frame;
}
}
}
......@@ -383,7 +368,7 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
/* FIXME use function pointers? */
if (inbuf->inputstate & INS_command)
procbytes = cmd_loop(c, src, numbytes, inbuf);
else if (inbuf->bcs->proto2 == ISDN_PROTO_L2_HDLC)
else if (inbuf->bcs->proto2 == L2_HDLC)
procbytes = hdlc_loop(c, src, numbytes, inbuf);
else
procbytes = iraw_loop(c, src, numbytes, inbuf);
......@@ -440,16 +425,16 @@ EXPORT_SYMBOL_GPL(gigaset_m10x_input);
/* == data output ========================================================== */
/* Encoding of a PPP packet into an octet stuffed HDLC frame
* with FCS, opening and closing flags.
/*
* Encode a data packet into an octet stuffed HDLC frame with FCS,
* opening and closing flags, preserving headroom data.
* parameters:
* skb skb containing original packet (freed upon return)
* head number of headroom bytes to allocate in result skb
* tail number of tailroom bytes to allocate in result skb
* skb skb containing original packet (freed upon return)
* headroom number of headroom bytes to preserve
* Return value:
* pointer to newly allocated skb containing the result frame
*/
static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail)
static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int headroom)
{
struct sk_buff *hdlc_skb;
__u16 fcs;
......@@ -471,16 +456,17 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail)
/* size of new buffer: original size + number of stuffing bytes
* + 2 bytes FCS + 2 stuffing bytes for FCS (if needed) + 2 flag bytes
* + room for acknowledgement header
*/
hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + tail + head);
hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + headroom);
if (!hdlc_skb) {
dev_kfree_skb(skb);
return NULL;
}
skb_reserve(hdlc_skb, head);
/* Copy acknowledge request into new skb */
memcpy(hdlc_skb->head, skb->head, 2);
/* Copy acknowledgement header into new skb */
skb_reserve(hdlc_skb, headroom);
memcpy(hdlc_skb->head, skb->head, headroom);
/* Add flag sequence in front of everything.. */
*(skb_put(hdlc_skb, 1)) = PPP_FLAG;
......@@ -515,15 +501,16 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail)
return hdlc_skb;
}
/* Encoding of a raw packet into an octet stuffed bit inverted frame
/*
* Encode a data packet into an octet stuffed raw bit inverted frame,
* preserving headroom data.
* parameters:
* skb skb containing original packet (freed upon return)
* head number of headroom bytes to allocate in result skb
* tail number of tailroom bytes to allocate in result skb
* skb skb containing original packet (freed upon return)
* headroom number of headroom bytes to preserve
* Return value:
* pointer to newly allocated skb containing the result frame
*/
static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
static struct sk_buff *iraw_encode(struct sk_buff *skb, int headroom)
{
struct sk_buff *iraw_skb;
unsigned char c;
......@@ -531,12 +518,15 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
int len;
/* worst case: every byte must be stuffed */
iraw_skb = dev_alloc_skb(2*skb->len + tail + head);
iraw_skb = dev_alloc_skb(2*skb->len + headroom);
if (!iraw_skb) {
dev_kfree_skb(skb);
return NULL;
}
skb_reserve(iraw_skb, head);
/* Copy acknowledgement header into new skb */
skb_reserve(iraw_skb, headroom);
memcpy(iraw_skb->head, skb->head, headroom);
cp = skb->data;
len = skb->len;
......@@ -555,8 +545,10 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
* @bcs: B channel descriptor structure.
* @skb: data to send.
*
* Called by i4l.c to encode and queue an skb for sending, and start
* Called by LL to encode and queue an skb for sending, and start
* transmission if necessary.
* Once the payload data has been transmitted completely, gigaset_skb_sent()
* will be called with the first cs->hw_hdr_len bytes of skb->head preserved.
*
* Return value:
* number of bytes accepted for sending (skb->len) if ok,
......@@ -567,10 +559,10 @@ int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb)
unsigned len = skb->len;
unsigned long flags;
if (bcs->proto2 == ISDN_PROTO_L2_HDLC)
skb = HDLC_Encode(skb, HW_HDR_LEN, 0);
if (bcs->proto2 == L2_HDLC)
skb = HDLC_Encode(skb, bcs->cs->hw_hdr_len);
else
skb = iraw_encode(skb, HW_HDR_LEN, 0);
skb = iraw_encode(skb, bcs->cs->hw_hdr_len);
if (!skb) {
dev_err(bcs->cs->dev,
"unable to allocate memory for encoding!\n");
......
......@@ -911,7 +911,7 @@ static int starturbs(struct bc_state *bcs)
int rc;
/* initialize L2 reception */
if (bcs->proto2 == ISDN_PROTO_L2_HDLC)
if (bcs->proto2 == L2_HDLC)
bcs->inputstate |= INS_flag_hunt;
/* submit all isochronous input URBs */
......@@ -1064,7 +1064,7 @@ static int submit_iso_write_urb(struct isow_urbctx_t *ucx)
"%s: buffer busy at frame %d",
__func__, nframe);
/* tasklet will be restarted from
gigaset_send_skb() */
gigaset_isoc_send_skb() */
} else {
dev_err(ucx->bcs->cs->dev,
"%s: buffer error %d at frame %d\n",
......
......@@ -463,6 +463,12 @@ void gigaset_freecs(struct cardstate *cs)
switch (cs->cs_init) {
default:
/* clear B channel structures */
for (i = 0; i < cs->channels; ++i) {
gig_dbg(DEBUG_INIT, "clearing bcs[%d]", i);
gigaset_freebcs(cs->bcs + i);
}
/* clear device sysfs */
gigaset_free_dev_sysfs(cs);
......@@ -477,22 +483,16 @@ void gigaset_freecs(struct cardstate *cs)
case 2: /* error in initcshw */
/* Deregister from LL */
make_invalid(cs, VALID_ID);
gig_dbg(DEBUG_INIT, "clearing iif");
gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD);
gigaset_isdn_unregister(cs);
/* fall through */
case 1: /* error when regestering to LL */
case 1: /* error when registering to LL */
gig_dbg(DEBUG_INIT, "clearing at_state");
clear_at_state(&cs->at_state);
dealloc_at_states(cs);
/* fall through */
case 0: /* error in one call to initbcs */
for (i = 0; i < cs->channels; ++i) {
gig_dbg(DEBUG_INIT, "clearing bcs[%d]", i);
gigaset_freebcs(cs->bcs + i);
}
case 0: /* error in basic setup */
clear_events(cs);
gig_dbg(DEBUG_INIT, "freeing inbuf");
kfree(cs->inbuf);
......@@ -620,11 +620,14 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
if (cs->ignoreframes) {
bcs->inputstate |= INS_skip_frame;
bcs->skb = NULL;
} else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else {
pr_err("out of memory\n");
bcs->inputstate |= INS_skip_frame;
} else {
bcs->skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
if (bcs->skb != NULL)
skb_reserve(bcs->skb, cs->hw_hdr_len);
else {
pr_err("out of memory\n");
bcs->inputstate |= INS_skip_frame;
}
}
bcs->channel = channel;
......@@ -726,14 +729,6 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
cs->mode = M_UNKNOWN;
cs->mstate = MS_UNINITIALIZED;
for (i = 0; i < channels; ++i) {
gig_dbg(DEBUG_INIT, "setting up bcs[%d].read", i);
if (!gigaset_initbcs(cs->bcs + i, cs, i)) {
pr_err("could not allocate channel %d data\n", i);
goto error;
}
}
++cs->cs_init;
gig_dbg(DEBUG_INIT, "setting up at_state");
......@@ -758,7 +753,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
cs->cmdbytes = 0;
gig_dbg(DEBUG_INIT, "setting up iif");
if (!gigaset_register_to_LL(cs, modulename)) {
if (!gigaset_isdn_register(cs, modulename)) {
pr_err("error registering ISDN device\n");
goto error;
}
......@@ -777,6 +772,15 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
/* set up device sysfs */
gigaset_init_dev_sysfs(cs);
/* set up channel data structures */
for (i = 0; i < channels; ++i) {
gig_dbg(DEBUG_INIT, "setting up bcs[%d]", i);
if (!gigaset_initbcs(cs->bcs + i, cs, i)) {
pr_err("could not allocate channel %d data\n", i);
goto error;
}
}
spin_lock_irqsave(&cs->lock, flags);
cs->running = 1;
spin_unlock_irqrestore(&cs->lock, flags);
......
......@@ -127,7 +127,6 @@
#define ACT_NOTIFY_BC_UP 39
#define ACT_DIAL 40
#define ACT_ACCEPT 41
#define ACT_PROTO_L2 42
#define ACT_HUP 43
#define ACT_IF_LOCK 44
#define ACT_START 45
......@@ -365,8 +364,6 @@ struct reply_t gigaset_tab_cid[] =
{EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
/* misc. */
{EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
{RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
{RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
{RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
......@@ -714,7 +711,7 @@ static void disconnect(struct at_state_t **at_state_p)
/* notify LL */
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
gigaset_isdn_hupD(bcs);
}
} else {
/* no B channel assigned: just deallocate */
......@@ -872,12 +869,12 @@ static void bchannel_down(struct bc_state *bcs)
{
if (bcs->chstate & CHS_B_UP) {
bcs->chstate &= ~CHS_B_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
gigaset_isdn_hupB(bcs);
}
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
gigaset_isdn_hupD(bcs);
}
gigaset_free_channel(bcs);
......@@ -894,15 +891,16 @@ static void bchannel_up(struct bc_state *bcs)
}
bcs->chstate |= CHS_B_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
gigaset_isdn_connB(bcs);
}
static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
{
struct bc_state *bcs = at_state->bcs;
struct cardstate *cs = at_state->cs;
int retval;
char **commands = data;
unsigned long flags;
int i;
bcs->chstate |= CHS_NOTIFY_LL;
......@@ -913,10 +911,10 @@ static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_ind
}
spin_unlock_irqrestore(&cs->lock, flags);
retval = gigaset_isdn_setup_dial(at_state, data);
if (retval != 0)
goto error;
for (i = 0; i < AT_NUM; ++i) {
kfree(bcs->commands[i]);
bcs->commands[i] = commands[i];
}
at_state->pending_commands |= PC_CID;
gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
......@@ -924,6 +922,10 @@ static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_ind
return;
error:
for (i = 0; i < AT_NUM; ++i) {
kfree(commands[i]);
commands[i] = NULL;
}
at_state->pending_commands |= PC_NOCID;
gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
cs->commands_pending = 1;
......@@ -933,20 +935,31 @@ error:
static void start_accept(struct at_state_t *at_state)
{
struct cardstate *cs = at_state->cs;
int retval;
struct bc_state *bcs = at_state->bcs;
int i;
retval = gigaset_isdn_setup_accept(at_state);
for (i = 0; i < AT_NUM; ++i) {
kfree(bcs->commands[i]);
bcs->commands[i] = NULL;
}
if (retval == 0) {
at_state->pending_commands |= PC_ACCEPT;
gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
cs->commands_pending = 1;
} else {
bcs->commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
bcs->commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
if (!bcs->commands[AT_PROTO] || !bcs->commands[AT_ISO]) {
dev_err(at_state->cs->dev, "out of memory\n");
/* error reset */
at_state->pending_commands |= PC_HUP;
gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
cs->commands_pending = 1;
return;
}
snprintf(bcs->commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
snprintf(bcs->commands[AT_ISO], 9, "^SISO=%u\r", bcs->channel + 1);
at_state->pending_commands |= PC_ACCEPT;
gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
cs->commands_pending = 1;
}
static void do_start(struct cardstate *cs)
......@@ -957,7 +970,7 @@ static void do_start(struct cardstate *cs)
schedule_init(cs, MS_INIT);
cs->isdn_up = 1;
gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
gigaset_isdn_start(cs);
// FIXME: not in locked mode
// FIXME 2: only after init sequence
......@@ -975,7 +988,7 @@ static void finish_shutdown(struct cardstate *cs)
/* Tell the LL that the device is not available .. */
if (cs->isdn_up) {
cs->isdn_up = 0;
gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
gigaset_isdn_stop(cs);
}
/* The rest is done by cleanup_cs () in user mode. */
......@@ -1276,7 +1289,7 @@ static void do_action(int action, struct cardstate *cs,
break;
}
bcs->chstate |= CHS_D_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
gigaset_isdn_connD(bcs);
cs->ops->init_bchannel(bcs);
break;
case ACT_DLE1:
......@@ -1284,7 +1297,7 @@ static void do_action(int action, struct cardstate *cs,
bcs = cs->bcs + cs->curchannel;
bcs->chstate |= CHS_D_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
gigaset_isdn_connD(bcs);
cs->ops->init_bchannel(bcs);
break;
case ACT_FAKEHUP:
......@@ -1474,11 +1487,6 @@ static void do_action(int action, struct cardstate *cs,
case ACT_ACCEPT:
start_accept(at_state);
break;
case ACT_PROTO_L2:
gig_dbg(DEBUG_CMD, "set protocol to %u",
(unsigned) ev->parameter);
at_state->bcs->proto2 = ev->parameter;
break;
case ACT_HUP:
at_state->pending_commands |= PC_HUP;
cs->commands_pending = 1;
......
......@@ -23,7 +23,6 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/isdnif.h>
#include <linux/usb.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
......@@ -40,7 +39,6 @@
#define MAX_REC_PARAMS 10 /* Max. number of params in response string */
#define MAX_RESP_SIZE 512 /* Max. size of a response string */
#define HW_HDR_LEN 2 /* Header size used to store ack info */
#define MAX_EVENTS 64 /* size of event queue */
......@@ -216,7 +214,6 @@ void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
#define EV_START -110
#define EV_STOP -111
#define EV_IF_LOCK -112
#define EV_PROTO_L2 -113
#define EV_ACCEPT -114
#define EV_DIAL -115
#define EV_HUP -116
......@@ -259,6 +256,11 @@ void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
#define SM_LOCKED 0
#define SM_ISDN 1 /* default */
/* layer 2 protocols (AT^SBPR=...) */
#define L2_BITSYNC 0
#define L2_HDLC 1
#define L2_VOICE 2
struct gigaset_ops;
struct gigaset_driver;
......@@ -395,7 +397,7 @@ struct bc_state {
unsigned chstate; /* bitmap (CHS_*) */
int ignore;
unsigned proto2; /* Layer 2 protocol (ISDN_PROTO_L2_*) */
unsigned proto2; /* layer 2 protocol (L2_*) */
char *commands[AT_NUM]; /* see AT_XXXX */
#ifdef CONFIG_GIGASET_DEBUG
......@@ -456,12 +458,13 @@ struct cardstate {
unsigned running; /* !=0 if events are handled */
unsigned connected; /* !=0 if hardware is connected */
unsigned isdn_up; /* !=0 after ISDN_STAT_RUN */
unsigned isdn_up; /* !=0 after gigaset_isdn_start() */
unsigned cidmode;
int myid; /* id for communication with LL */
isdn_if iif;
void *iif; /* LL interface structure */
unsigned short hw_hdr_len; /* headroom needed in data skbs */
struct reply_t *tabnocid;
struct reply_t *tabcid;
......@@ -616,7 +619,9 @@ struct gigaset_ops {
int (*baud_rate)(struct cardstate *cs, unsigned cflag);
int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
/* Called from i4l.c to put an skb into the send-queue. */
/* Called from LL interface to put an skb into the send-queue.
* After sending is completed, gigaset_skb_sent() must be called
* with the first cs->hw_hdr_len bytes of skb->head preserved. */
int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb);
/* Called from ev-layer.c to process a block of data
......@@ -638,8 +643,7 @@ struct gigaset_ops {
* Functions implemented in asyncdata.c
*/
/* Called from i4l.c to put an skb into the send-queue.
* After sending gigaset_skb_sent() should be called. */
/* Called from LL interface to put an skb into the send queue. */
int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
/* Called from ev-layer.c to process a block of data
......@@ -650,8 +654,7 @@ void gigaset_m10x_input(struct inbuf_t *inbuf);
* Functions implemented in isocdata.c
*/
/* Called from i4l.c to put an skb into the send-queue.
* After sending gigaset_skb_sent() should be called. */
/* Called from LL interface to put an skb into the send queue. */
int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
/* Called from ev-layer.c to process a block of data
......@@ -674,36 +677,26 @@ void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
/* ===========================================================================
* Functions implemented in i4l.c/gigaset.h
* Functions implemented in LL interface
*/
/* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */
int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid);
/* Called from common.c for setting up/shutting down with the ISDN subsystem */
int gigaset_isdn_register(struct cardstate *cs, const char *isdnid);