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-rw-r--r--drivers/isdn/hardware/eicon/maintidi.c5
-rw-r--r--drivers/isdn/hardware/eicon/message.c18
-rw-r--r--drivers/isdn/hardware/mISDN/hfcmulti.c2
-rw-r--r--drivers/isdn/hisax/amd7930_fn.c1
-rw-r--r--drivers/isdn/hisax/diva.c2
-rw-r--r--drivers/isdn/hisax/elsa_ser.c22
-rw-r--r--drivers/isdn/hisax/hfc_usb.c4
-rw-r--r--drivers/isdn/hisax/hscx_irq.c2
-rw-r--r--drivers/isdn/hisax/icc.c1
-rw-r--r--drivers/isdn/i4l/isdn_net.h6
-rw-r--r--drivers/isdn/i4l/isdn_ppp.c352
-rw-r--r--drivers/isdn/mISDN/stack.c2
12 files changed, 197 insertions, 220 deletions
diff --git a/drivers/isdn/hardware/eicon/maintidi.c b/drivers/isdn/hardware/eicon/maintidi.c
index 23960cb6eaa..41c26e75645 100644
--- a/drivers/isdn/hardware/eicon/maintidi.c
+++ b/drivers/isdn/hardware/eicon/maintidi.c
@@ -959,8 +959,9 @@ static int process_idi_event (diva_strace_context_t* pLib,
}
if (!strncmp("State\\Layer2 No1", path, pVar->path_length)) {
char* tmp = &pLib->lines[0].pInterface->Layer2[0];
- dword l2_state;
- diva_strace_read_uint (pVar, &l2_state);
+ dword l2_state;
+ if (diva_strace_read_uint(pVar, &l2_state))
+ return -1;
switch (l2_state) {
case 0:
diff --git a/drivers/isdn/hardware/eicon/message.c b/drivers/isdn/hardware/eicon/message.c
index 27d5dd68f4f..ae89fb89da6 100644
--- a/drivers/isdn/hardware/eicon/message.c
+++ b/drivers/isdn/hardware/eicon/message.c
@@ -2692,7 +2692,7 @@ static byte connect_b3_req(dword Id, word Number, DIVA_CAPI_ADAPTER *a,
if (!(fax_control_bits & T30_CONTROL_BIT_MORE_DOCUMENTS)
|| (fax_feature_bits & T30_FEATURE_BIT_MORE_DOCUMENTS))
{
- len = (byte)(&(((T30_INFO *) 0)->universal_6));
+ len = offsetof(T30_INFO, universal_6);
fax_info_change = false;
if (ncpi->length >= 4)
{
@@ -2754,7 +2754,7 @@ static byte connect_b3_req(dword Id, word Number, DIVA_CAPI_ADAPTER *a,
for (i = 0; i < w; i++)
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id[i] = fax_parms[4].info[1+i];
((T30_INFO *)(plci->fax_connect_info_buffer))->head_line_len = 0;
- len = (byte)(((T30_INFO *) 0)->station_id + 20);
+ len = offsetof(T30_INFO, station_id) + 20;
w = fax_parms[5].length;
if (w > 20)
w = 20;
@@ -2788,7 +2788,7 @@ static byte connect_b3_req(dword Id, word Number, DIVA_CAPI_ADAPTER *a,
}
else
{
- len = (byte)(&(((T30_INFO *) 0)->universal_6));
+ len = offsetof(T30_INFO, universal_6);
}
fax_info_change = true;
@@ -2892,7 +2892,7 @@ static byte connect_b3_res(dword Id, word Number, DIVA_CAPI_ADAPTER *a,
&& (plci->nsf_control_bits & T30_NSF_CONTROL_BIT_ENABLE_NSF)
&& (plci->nsf_control_bits & T30_NSF_CONTROL_BIT_NEGOTIATE_RESP))
{
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
if (plci->fax_connect_info_length < len)
{
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id_len = 0;
@@ -3802,7 +3802,7 @@ static byte manufacturer_res(dword Id, word Number, DIVA_CAPI_ADAPTER *a,
break;
}
ncpi = &m_parms[1];
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
if (plci->fax_connect_info_length < len)
{
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id_len = 0;
@@ -6844,7 +6844,7 @@ static void nl_ind(PLCI *plci)
if ((plci->requested_options_conn | plci->requested_options | a->requested_options_table[plci->appl->Id-1])
& ((1L << PRIVATE_FAX_SUB_SEP_PWD) | (1L << PRIVATE_FAX_NONSTANDARD)))
{
- i = ((word)(((T30_INFO *) 0)->station_id + 20)) + ((T30_INFO *)plci->NL.RBuffer->P)->head_line_len;
+ i = offsetof(T30_INFO, station_id) + 20 + ((T30_INFO *)plci->NL.RBuffer->P)->head_line_len;
while (i < plci->NL.RBuffer->length)
plci->ncpi_buffer[++len] = plci->NL.RBuffer->P[i++];
}
@@ -7236,7 +7236,7 @@ static void nl_ind(PLCI *plci)
{
plci->RData[1].P = plci->RData[0].P;
plci->RData[1].PLength = plci->RData[0].PLength;
- plci->RData[0].P = v120_header_buffer + (-((int) v120_header_buffer) & 3);
+ plci->RData[0].P = v120_header_buffer + (-((unsigned long)v120_header_buffer) & 3);
if ((plci->NL.RBuffer->P[0] & V120_HEADER_EXTEND_BIT) || (plci->NL.RLength == 1))
plci->RData[0].PLength = 1;
else
@@ -8473,7 +8473,7 @@ static word add_b23(PLCI *plci, API_PARSE *bp)
fax_control_bits |= T30_CONTROL_BIT_ACCEPT_SEL_POLLING;
}
len = nlc[0];
- pos = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ pos = offsetof(T30_INFO, station_id) + 20;
if (pos < plci->fax_connect_info_length)
{
for (i = 1 + plci->fax_connect_info_buffer[pos]; i != 0; i--)
@@ -8525,7 +8525,7 @@ static word add_b23(PLCI *plci, API_PARSE *bp)
}
PUT_WORD(&(((T30_INFO *)&nlc[1])->control_bits_low), fax_control_bits);
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
for (i = 0; i < len; i++)
plci->fax_connect_info_buffer[i] = nlc[1+i];
((T30_INFO *) plci->fax_connect_info_buffer)->head_line_len = 0;
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index faed794cf75..a6624ad252c 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -5481,7 +5481,7 @@ HFCmulti_init(void)
if (err) {
printk(KERN_ERR "error registering embedded driver: "
"%x\n", err);
- return -err;
+ return err;
}
HFC_cnt++;
printk(KERN_INFO "%d devices registered\n", HFC_cnt);
diff --git a/drivers/isdn/hisax/amd7930_fn.c b/drivers/isdn/hisax/amd7930_fn.c
index bf526a7a63a..d6fdf1f6675 100644
--- a/drivers/isdn/hisax/amd7930_fn.c
+++ b/drivers/isdn/hisax/amd7930_fn.c
@@ -594,6 +594,7 @@ Amd7930_l1hw(struct PStack *st, int pr, void *arg)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "Amd7930: l1hw: l2l1 tx_skb exist this shouldn't happen");
skb_queue_tail(&cs->sq, skb);
+ spin_unlock_irqrestore(&cs->lock, flags);
break;
}
if (cs->debug & DEB_DLOG_HEX)
diff --git a/drivers/isdn/hisax/diva.c b/drivers/isdn/hisax/diva.c
index 018bd293e58..0b0c2e5d806 100644
--- a/drivers/isdn/hisax/diva.c
+++ b/drivers/isdn/hisax/diva.c
@@ -382,7 +382,7 @@ MemwaitforXFW(struct IsdnCardState *cs, int hscx)
{
int to = 50;
- while ((!(MemReadHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {
+ while (((MemReadHSCX(cs, hscx, HSCX_STAR) & 0x44) != 0x40) && to) {
udelay(1);
to--;
}
diff --git a/drivers/isdn/hisax/elsa_ser.c b/drivers/isdn/hisax/elsa_ser.c
index f181db46439..1657bba7879 100644
--- a/drivers/isdn/hisax/elsa_ser.c
+++ b/drivers/isdn/hisax/elsa_ser.c
@@ -477,62 +477,62 @@ static void
modem_set_init(struct IsdnCardState *cs) {
int timeout;
-#define RCV_DELAY 20000
+#define RCV_DELAY 20
modem_write_cmd(cs, MInit_1, strlen(MInit_1));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_2, strlen(MInit_2));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_3, strlen(MInit_3));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_4, strlen(MInit_4));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY );
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_5, strlen(MInit_5));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_6, strlen(MInit_6));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
modem_write_cmd(cs, MInit_7, strlen(MInit_7));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
}
static void
modem_set_dial(struct IsdnCardState *cs, int outgoing) {
int timeout;
-#define RCV_DELAY 20000
+#define RCV_DELAY 20
modem_write_cmd(cs, MInit_speed28800, strlen(MInit_speed28800));
timeout = 1000;
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
if (outgoing)
modem_write_cmd(cs, MInit_dialout, strlen(MInit_dialout));
else
@@ -541,7 +541,7 @@ modem_set_dial(struct IsdnCardState *cs, int outgoing) {
while(timeout-- && cs->hw.elsa.transcnt)
udelay(1000);
debugl1(cs, "msi tout=%d", timeout);
- udelay(RCV_DELAY);
+ mdelay(RCV_DELAY);
}
static void
diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c
index 9de54202c90..a420b64472e 100644
--- a/drivers/isdn/hisax/hfc_usb.c
+++ b/drivers/isdn/hisax/hfc_usb.c
@@ -817,8 +817,8 @@ collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
}
/* we have a complete hdlc packet */
if (finish) {
- if ((!fifo->skbuff->data[fifo->skbuff->len - 1])
- && (fifo->skbuff->len > 3)) {
+ if (fifo->skbuff->len > 3 &&
+ !fifo->skbuff->data[fifo->skbuff->len - 1]) {
if (fifon == HFCUSB_D_RX) {
DBG(HFCUSB_DBG_DCHANNEL,
diff --git a/drivers/isdn/hisax/hscx_irq.c b/drivers/isdn/hisax/hscx_irq.c
index 7b1ad5e4ecd..2387d76c721 100644
--- a/drivers/isdn/hisax/hscx_irq.c
+++ b/drivers/isdn/hisax/hscx_irq.c
@@ -32,7 +32,7 @@ waitforXFW(struct IsdnCardState *cs, int hscx)
{
int to = 50;
- while ((!(READHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {
+ while (((READHSCX(cs, hscx, HSCX_STAR) & 0x44) != 0x40) && to) {
udelay(1);
to--;
}
diff --git a/drivers/isdn/hisax/icc.c b/drivers/isdn/hisax/icc.c
index 9aba646ba22..c80cbb8a2ef 100644
--- a/drivers/isdn/hisax/icc.c
+++ b/drivers/isdn/hisax/icc.c
@@ -468,6 +468,7 @@ ICC_l1hw(struct PStack *st, int pr, void *arg)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
skb_queue_tail(&cs->sq, skb);
+ spin_unlock_irqrestore(&cs->lock, flags);
break;
}
if (cs->debug & DEB_DLOG_HEX)
diff --git a/drivers/isdn/i4l/isdn_net.h b/drivers/isdn/i4l/isdn_net.h
index 74032d0881e..7511f08effa 100644
--- a/drivers/isdn/i4l/isdn_net.h
+++ b/drivers/isdn/i4l/isdn_net.h
@@ -83,19 +83,19 @@ static __inline__ isdn_net_local * isdn_net_get_locked_lp(isdn_net_dev *nd)
spin_lock_irqsave(&nd->queue_lock, flags);
lp = nd->queue; /* get lp on top of queue */
- spin_lock(&nd->queue->xmit_lock);
while (isdn_net_lp_busy(nd->queue)) {
- spin_unlock(&nd->queue->xmit_lock);
nd->queue = nd->queue->next;
if (nd->queue == lp) { /* not found -- should never happen */
lp = NULL;
goto errout;
}
- spin_lock(&nd->queue->xmit_lock);
}
lp = nd->queue;
nd->queue = nd->queue->next;
+ spin_unlock_irqrestore(&nd->queue_lock, flags);
+ spin_lock(&lp->xmit_lock);
local_bh_disable();
+ return lp;
errout:
spin_unlock_irqrestore(&nd->queue_lock, flags);
return lp;
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 2d14b64202a..642d5aaf53c 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -1535,10 +1535,8 @@ static int isdn_ppp_mp_bundle_array_init(void)
int sz = ISDN_MAX_CHANNELS*sizeof(ippp_bundle);
if( (isdn_ppp_bundle_arr = kzalloc(sz, GFP_KERNEL)) == NULL )
return -ENOMEM;
- for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+ for( i = 0; i < ISDN_MAX_CHANNELS; i++ )
spin_lock_init(&isdn_ppp_bundle_arr[i].lock);
- skb_queue_head_init(&isdn_ppp_bundle_arr[i].frags);
- }
return 0;
}
@@ -1571,7 +1569,7 @@ static int isdn_ppp_mp_init( isdn_net_local * lp, ippp_bundle * add_to )
if ((lp->netdev->pb = isdn_ppp_mp_bundle_alloc()) == NULL)
return -ENOMEM;
lp->next = lp->last = lp; /* nobody else in a queue */
- skb_queue_head_init(&lp->netdev->pb->frags);
+ lp->netdev->pb->frags = NULL;
lp->netdev->pb->frames = 0;
lp->netdev->pb->seq = UINT_MAX;
}
@@ -1583,29 +1581,28 @@ static int isdn_ppp_mp_init( isdn_net_local * lp, ippp_bundle * add_to )
static u32 isdn_ppp_mp_get_seq( int short_seq,
struct sk_buff * skb, u32 last_seq );
-static void isdn_ppp_mp_discard(ippp_bundle *mp, struct sk_buff *from,
- struct sk_buff *to);
-static void isdn_ppp_mp_reassembly(isdn_net_dev *net_dev, isdn_net_local *lp,
- struct sk_buff *from, struct sk_buff *to,
- u32 lastseq);
-static void isdn_ppp_mp_free_skb(ippp_bundle *mp, struct sk_buff *skb);
+static struct sk_buff * isdn_ppp_mp_discard( ippp_bundle * mp,
+ struct sk_buff * from, struct sk_buff * to );
+static void isdn_ppp_mp_reassembly( isdn_net_dev * net_dev, isdn_net_local * lp,
+ struct sk_buff * from, struct sk_buff * to );
+static void isdn_ppp_mp_free_skb( ippp_bundle * mp, struct sk_buff * skb );
static void isdn_ppp_mp_print_recv_pkt( int slot, struct sk_buff * skb );
static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
- struct sk_buff *skb)
+ struct sk_buff *skb)
{
- struct sk_buff *newfrag, *frag, *start, *nextf;
- u32 newseq, minseq, thisseq;
- isdn_mppp_stats *stats;
struct ippp_struct *is;
+ isdn_net_local * lpq;
+ ippp_bundle * mp;
+ isdn_mppp_stats * stats;
+ struct sk_buff * newfrag, * frag, * start, *nextf;
+ u32 newseq, minseq, thisseq;
unsigned long flags;
- isdn_net_local *lpq;
- ippp_bundle *mp;
int slot;
spin_lock_irqsave(&net_dev->pb->lock, flags);
- mp = net_dev->pb;
- stats = &mp->stats;
+ mp = net_dev->pb;
+ stats = &mp->stats;
slot = lp->ppp_slot;
if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
printk(KERN_ERR "%s: lp->ppp_slot(%d)\n",
@@ -1616,19 +1613,20 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
return;
}
is = ippp_table[slot];
- if (++mp->frames > stats->max_queue_len)
+ if( ++mp->frames > stats->max_queue_len )
stats->max_queue_len = mp->frames;
-
+
if (is->debug & 0x8)
isdn_ppp_mp_print_recv_pkt(lp->ppp_slot, skb);
- newseq = isdn_ppp_mp_get_seq(is->mpppcfg & SC_IN_SHORT_SEQ,
- skb, is->last_link_seqno);
+ newseq = isdn_ppp_mp_get_seq(is->mpppcfg & SC_IN_SHORT_SEQ,
+ skb, is->last_link_seqno);
+
/* if this packet seq # is less than last already processed one,
* toss it right away, but check for sequence start case first
*/
- if (mp->seq > MP_LONGSEQ_MAX && (newseq & MP_LONGSEQ_MAXBIT)) {
+ if( mp->seq > MP_LONGSEQ_MAX && (newseq & MP_LONGSEQ_MAXBIT) ) {
mp->seq = newseq; /* the first packet: required for
* rfc1990 non-compliant clients --
* prevents constant packet toss */
@@ -1638,7 +1636,7 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
spin_unlock_irqrestore(&mp->lock, flags);
return;
}
-
+
/* find the minimum received sequence number over all links */
is->last_link_seqno = minseq = newseq;
for (lpq = net_dev->queue;;) {
@@ -1659,31 +1657,22 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
* packets */
newfrag = skb;
- /* Insert new fragment into the proper sequence slot. */
- skb_queue_walk(&mp->frags, frag) {
- if (MP_SEQ(frag) == newseq) {
- isdn_ppp_mp_free_skb(mp, newfrag);
- newfrag = NULL;
- break;
- }
- if (MP_LT(newseq, MP_SEQ(frag))) {
- __skb_queue_before(&mp->frags, frag, newfrag);
- newfrag = NULL;
- break;
- }
- }
- if (newfrag)
- __skb_queue_tail(&mp->frags, newfrag);
+ /* if this new fragment is before the first one, then enqueue it now. */
+ if ((frag = mp->frags) == NULL || MP_LT(newseq, MP_SEQ(frag))) {
+ newfrag->next = frag;
+ mp->frags = frag = newfrag;
+ newfrag = NULL;
+ }
- frag = skb_peek(&mp->frags);
- start = ((MP_FLAGS(frag) & MP_BEGIN_FRAG) &&
- (MP_SEQ(frag) == mp->seq)) ? frag : NULL;
- if (!start)
- goto check_overflow;
+ start = MP_FLAGS(frag) & MP_BEGIN_FRAG &&
+ MP_SEQ(frag) == mp->seq ? frag : NULL;
- /* main fragment traversing loop
+ /*
+ * main fragment traversing loop
*
* try to accomplish several tasks:
+ * - insert new fragment into the proper sequence slot (once that's done
+ * newfrag will be set to NULL)
* - reassemble any complete fragment sequence (non-null 'start'
* indicates there is a continguous sequence present)
* - discard any incomplete sequences that are below minseq -- due
@@ -1692,46 +1681,71 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
* come to complete such sequence and it should be discarded
*
* loop completes when we accomplished the following tasks:
+ * - new fragment is inserted in the proper sequence ('newfrag' is
+ * set to NULL)
* - we hit a gap in the sequence, so no reassembly/processing is
* possible ('start' would be set to NULL)
*
* algorithm for this code is derived from code in the book
* 'PPP Design And Debugging' by James Carlson (Addison-Wesley)
*/
- skb_queue_walk_safe(&mp->frags, frag, nextf) {
- thisseq = MP_SEQ(frag);
-
- /* check for misplaced start */
- if (start != frag && (MP_FLAGS(frag) & MP_BEGIN_FRAG)) {
- printk(KERN_WARNING"isdn_mppp(seq %d): new "
- "BEGIN flag with no prior END", thisseq);
- stats->seqerrs++;
- stats->frame_drops++;
- isdn_ppp_mp_discard(mp, start, frag);
- start = frag;
- } else if (MP_LE(thisseq, minseq)) {
- if (MP_FLAGS(frag) & MP_BEGIN_FRAG)
+ while (start != NULL || newfrag != NULL) {
+
+ thisseq = MP_SEQ(frag);
+ nextf = frag->next;
+
+ /* drop any duplicate fragments */
+ if (newfrag != NULL && thisseq == newseq) {
+ isdn_ppp_mp_free_skb(mp, newfrag);
+ newfrag = NULL;
+ }
+
+ /* insert new fragment before next element if possible. */
+ if (newfrag != NULL && (nextf == NULL ||
+ MP_LT(newseq, MP_SEQ(nextf)))) {
+ newfrag->next = nextf;
+ frag->next = nextf = newfrag;
+ newfrag = NULL;
+ }
+
+ if (start != NULL) {
+ /* check for misplaced start */
+ if (start != frag && (MP_FLAGS(frag) & MP_BEGIN_FRAG)) {
+ printk(KERN_WARNING"isdn_mppp(seq %d): new "
+ "BEGIN flag with no prior END", thisseq);
+ stats->seqerrs++;
+ stats->frame_drops++;
+ start = isdn_ppp_mp_discard(mp, start,frag);
+ nextf = frag->next;
+ }
+ } else if (MP_LE(thisseq, minseq)) {
+ if (MP_FLAGS(frag) & MP_BEGIN_FRAG)
start = frag;
- else {
+ else {
if (MP_FLAGS(frag) & MP_END_FRAG)
- stats->frame_drops++;
- __skb_unlink(skb, &mp->frags);
+ stats->frame_drops++;
+ if( mp->frags == frag )
+ mp->frags = nextf;
isdn_ppp_mp_free_skb(mp, frag);
+ frag = nextf;
continue;
- }
+ }
}
-
- /* if we have end fragment, then we have full reassembly
- * sequence -- reassemble and process packet now
+
+ /* if start is non-null and we have end fragment, then
+ * we have full reassembly sequence -- reassemble
+ * and process packet now
*/
- if (MP_FLAGS(frag) & MP_END_FRAG) {
- minseq = mp->seq = (thisseq+1) & MP_LONGSEQ_MASK;
- /* Reassemble the packet then dispatch it */
- isdn_ppp_mp_reassembly(net_dev, lp, start, frag, thisseq);
+ if (start != NULL && (MP_FLAGS(frag) & MP_END_FRAG)) {
+ minseq = mp->seq = (thisseq+1) & MP_LONGSEQ_MASK;
+ /* Reassemble the packet then dispatch it */
+ isdn_ppp_mp_reassembly(net_dev, lp, start, nextf);
+
+ start = NULL;
+ frag = NULL;
- start = NULL;
- frag = NULL;
- }
+ mp->frags = nextf;
+ }
/* check if need to update start pointer: if we just
* reassembled the packet and sequence is contiguous
@@ -1742,25 +1756,26 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
* below low watermark and set start to the next frag or
* clear start ptr.
*/
- if (nextf != (struct sk_buff *)&mp->frags &&
+ if (nextf != NULL &&
((thisseq+1) & MP_LONGSEQ_MASK) == MP_SEQ(nextf)) {
- /* if we just reassembled and the next one is here,
- * then start another reassembly.
- */
- if (frag == NULL) {
+ /* if we just reassembled and the next one is here,
+ * then start another reassembly. */
+
+ if (frag == NULL) {
if (MP_FLAGS(nextf) & MP_BEGIN_FRAG)
- start = nextf;
- else {
- printk(KERN_WARNING"isdn_mppp(seq %d):"
- " END flag with no following "
- "BEGIN", thisseq);
+ start = nextf;
+ else
+ {
+ printk(KERN_WARNING"isdn_mppp(seq %d):"
+ " END flag with no following "
+ "BEGIN", thisseq);
stats->seqerrs++;
}
}
- } else {
- if (nextf != (struct sk_buff *)&mp->frags &&
- frag != NULL &&
- MP_LT(thisseq, minseq)) {
+
+ } else {
+ if ( nextf != NULL && frag != NULL &&
+ MP_LT(thisseq, minseq)) {
/* we've got a break in the sequence
* and we not at the end yet
* and we did not just reassembled
@@ -1769,39 +1784,41 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
* discard all the frames below low watermark
* and start over */
stats->frame_drops++;
- isdn_ppp_mp_discard(mp, start, nextf);
+ mp->frags = isdn_ppp_mp_discard(mp,start,nextf);
}
/* break in the sequence, no reassembly */
- start = NULL;
- }
- if (!start)
- break;
- }
-
-check_overflow:
+ start = NULL;
+ }
+
+ frag = nextf;
+ } /* while -- main loop */
+
+ if (mp->frags == NULL)
+ mp->frags = frag;
+
/* rather straighforward way to deal with (not very) possible
- * queue overflow
- */
+ * queue overflow */
if (mp->frames > MP_MAX_QUEUE_LEN) {
stats->overflows++;
- skb_queue_walk_safe(&mp->frags, frag, nextf) {
- if (mp->frames <= MP_MAX_QUEUE_LEN)
- break;
- __skb_unlink(frag, &mp->frags);
- isdn_ppp_mp_free_skb(mp, frag);
+ while (mp->frames > MP_MAX_QUEUE_LEN) {
+ frag = mp->frags->next;
+ isdn_ppp_mp_free_skb(mp, mp->frags);
+ mp->frags = frag;
}
}
spin_unlock_irqrestore(&mp->lock, flags);
}
-static void isdn_ppp_mp_cleanup(isdn_net_local *lp)
+static void isdn_ppp_mp_cleanup( isdn_net_local * lp )
{
- struct sk_buff *skb, *tmp;
-
- skb_queue_walk_safe(&lp->netdev->pb->frags, skb, tmp) {
- __skb_unlink(skb, &lp->netdev->pb->frags);
- isdn_ppp_mp_free_skb(lp->netdev->pb, skb);
- }
+ struct sk_buff * frag = lp->netdev->pb->frags;
+ struct sk_buff * nextfrag;
+ while( frag ) {
+ nextfrag = frag->next;
+ isdn_ppp_mp_free_skb(lp->netdev->pb, frag);
+ frag = nextfrag;
+ }
+ lp->netdev->pb->frags = NULL;
}
static u32 isdn_ppp_mp_get_seq( int short_seq,
@@ -1838,115 +1855,72 @@ static u32 isdn_ppp_mp_get_seq( int short_seq,
return seq;
}
-static void isdn_ppp_mp_discard(ippp_bundle *mp, struct sk_buff *from,
- struct sk_buff *to)
+struct sk_buff * isdn_ppp_mp_discard( ippp_bundle * mp,
+ struct sk_buff * from, struct sk_buff * to )
{
- if (from) {
- struct sk_buff *skb, *tmp;
- int freeing = 0;
-
- skb_queue_walk_safe(&mp->frags, skb, tmp) {
- if (skb == to)
- break;
- if (skb == from)
- freeing = 1;
- if (!freeing)
- continue;
- __skb_unlink(skb, &mp->frags);
- isdn_ppp_mp_free_skb(mp, skb);
+ if( from )
+ while (from != to) {
+ struct sk_buff * next = from->next;
+ isdn_ppp_mp_free_skb(mp, from);
+ from = next;
}
- }
-}
-
-static unsigned int calc_tot_len(struct sk_buff_head *queue,
- struct sk_buff *from, struct sk_buff *to)
-{
- unsigned int tot_len = 0;
- struct sk_buff *skb;
- int found_start = 0;
-
- skb_queue_walk(queue, skb) {
- if (skb == from)
- found_start = 1;
- if (!found_start)
- continue;
- tot_len += skb->len - MP_HEADER_LEN;
- if (skb == to)
- break;
- }
- return tot_len;
+ return from;
}
-/* Reassemble packet using fragments in the reassembly queue from
- * 'from' until 'to', inclusive.
- */
-static void isdn_ppp_mp_reassembly(isdn_net_dev *net_dev, isdn_net_local *lp,
- struct sk_buff *from, struct sk_buff *to,
- u32 lastseq)
+void isdn_ppp_mp_reassembly( isdn_net_dev * net_dev, isdn_net_local * lp,
+ struct sk_buff * from, struct sk_buff * to )
{
- ippp_bundle *mp = net_dev->pb;
- unsigned int tot_len;
- struct sk_buff *skb;
+ ippp_bundle * mp = net_dev->pb;
int proto;
+ struct sk_buff * skb;
+ unsigned int tot_len;
if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
__func__, lp->ppp_slot);
return;
}
-
- tot_len = calc_tot_len(&mp->frags, from, to);
-
- if (MP_FLAGS(from) == (MP_BEGIN_FRAG | MP_END_FRAG)) {
- if (ippp_table[lp->ppp_slot]->debug & 0x40)
+ if( MP_FLAGS(from) == (MP_BEGIN_FRAG | MP_END_FRAG) ) {
+ if( ippp_table[lp->ppp_slot]->debug & 0x40 )
printk(KERN_DEBUG "isdn_mppp: reassembly: frame %d, "
- "len %d\n", MP_SEQ(from), from->len);
+ "len %d\n", MP_SEQ(from), from->len );
skb = from;
skb_pull(skb, MP_HEADER_LEN);
- __skb_unlink(skb, &mp->frags);
mp->frames--;
} else {
- struct sk_buff *walk, *tmp;
- int found_start = 0;
+ struct sk_buff * frag;
+ int n;
- if (ippp_table[lp->ppp_slot]->debug & 0x40)
- printk(KERN_DEBUG"isdn_mppp: reassembling frames %d "
- "to %d, len %d\n", MP_SEQ(from), lastseq,
- tot_len);
+ for(tot_len=n=0, frag=from; frag != to; frag=frag->next, n++)
+ tot_len += frag->len - MP_HEADER_LEN;
- skb = dev_alloc_skb(tot_len);
- if (!skb)
+ if( ippp_table[lp->ppp_slot]->debug & 0x40 )
+ printk(KERN_DEBUG"isdn_mppp: reassembling frames %d "
+ "to %d, len %d\n", MP_SEQ(from),
+ (MP_SEQ(from)+n-1) & MP_LONGSEQ_MASK, tot_len );
+ if( (skb = dev_alloc_skb(tot_len)) == NULL ) {
printk(KERN_ERR "isdn_mppp: cannot allocate sk buff "
- "of size %d\n", tot_len);
-
- found_start = 0;
- skb_queue_walk_safe(&mp->frags, walk, tmp) {
- if (walk == from)
- found_start = 1;
- if (!found_start)
- continue;
+ "of size %d\n", tot_len);
+ isdn_ppp_mp_discard(mp, from, to);
+ return;
+ }
- if (skb) {
- unsigned int len = walk->len - MP_HEADER_LEN;
- skb_copy_from_linear_data_offset(walk, MP_HEADER_LEN,
- skb_put(skb, len),
- len);
- }
- __skb_unlink(walk, &mp->frags);
- isdn_ppp_mp_free_skb(mp, walk);
+ while( from != to ) {
+ unsigned int len = from->len - MP_HEADER_LEN;
- if (walk == to)
- break;
+ skb_copy_from_linear_data_offset(from, MP_HEADER_LEN,
+ skb_put(skb,len),
+ len);
+ frag = from->next;
+ isdn_ppp_mp_free_skb(mp, from);
+ from = frag;
}
}
- if (!skb)
- return;
-
proto = isdn_ppp_strip_proto(skb);
isdn_ppp_push_higher(net_dev, lp, skb, proto);
}
-static void isdn_ppp_mp_free_skb(ippp_bundle *mp, struct sk_buff *skb)
+static void isdn_ppp_mp_free_skb(ippp_bundle * mp, struct sk_buff * skb)
{
dev_kfree_skb(skb);
mp->frames--;
diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c
index 3e1532a180f..0d05ec43012 100644
--- a/drivers/isdn/mISDN/stack.c
+++ b/drivers/isdn/mISDN/stack.c
@@ -364,7 +364,7 @@ add_layer2(struct mISDNchannel *ch, struct mISDNstack *st)
static int
st_own_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
{
- if (!ch->st || ch->st->layer1)
+ if (!ch->st || !ch->st->layer1)
return -EINVAL;
return ch->st->layer1->ctrl(ch->st->layer1, cmd, arg);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 14:02:18 +0000