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ppp_generic.c severly whitespace damanged by 9c70526
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I was just looking at ppp_generic, and noticed that it fairly recently
(as in the last year) got rather mangled with many spaces turned into tabs
in places they very much shouldn't have been.  I tracked it down to commit
9c70526 (ppp: ppp_mp_explode() redesign).

I am amazed if that patch passed the patch checking script.  I have no
idea what kind of weird editor setting did this, but it has to have been a
weird editor setting or a very unfortunate search and replace gone wrong.
I only found it trying to apply a patch I was playing with and wondering
why it wouldn't apply.  Then I found there were tabs in the middle of
comments that used to be spaces.

Well here is a patch that should fix it up as far as I can tell.

Purely whitespace repair.  No actual code changes.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lennart Sorensen authored and David S. Miller committed Jan 19, 2010
1 parent 2ae3111 commit fa44a73
Showing 1 changed file with 61 additions and 61 deletions.
122 changes: 61 additions & 61 deletions drivers/net/ppp_generic.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -167,7 +167,7 @@ struct channel {
u8 avail; /* flag used in multilink stuff */
u8 had_frag; /* >= 1 fragments have been sent */
u32 lastseq; /* MP: last sequence # received */
int speed; /* speed of the corresponding ppp channel*/
int speed; /* speed of the corresponding ppp channel*/
#endif /* CONFIG_PPP_MULTILINK */
};

Expand Down Expand Up @@ -1293,35 +1293,35 @@ ppp_push(struct ppp *ppp)
*/
static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
{
int len, totlen;
int i, bits, hdrlen, mtu;
int flen;
int navail, nfree, nzero;
int nbigger;
int totspeed;
int totfree;
int len, totlen;
int i, bits, hdrlen, mtu;
int flen;
int navail, nfree, nzero;
int nbigger;
int totspeed;
int totfree;
unsigned char *p, *q;
struct list_head *list;
struct channel *pch;
struct sk_buff *frag;
struct ppp_channel *chan;

totspeed = 0; /*total bitrate of the bundle*/
nfree = 0; /* # channels which have no packet already queued */
navail = 0; /* total # of usable channels (not deregistered) */
nzero = 0; /* number of channels with zero speed associated*/
totfree = 0; /*total # of channels available and
nfree = 0; /* # channels which have no packet already queued */
navail = 0; /* total # of usable channels (not deregistered) */
nzero = 0; /* number of channels with zero speed associated*/
totfree = 0; /*total # of channels available and
*having no queued packets before
*starting the fragmentation*/

hdrlen = (ppp->flags & SC_MP_XSHORTSEQ)? MPHDRLEN_SSN: MPHDRLEN;
i = 0;
list_for_each_entry(pch, &ppp->channels, clist) {
i = 0;
list_for_each_entry(pch, &ppp->channels, clist) {
navail += pch->avail = (pch->chan != NULL);
pch->speed = pch->chan->speed;
if (pch->avail) {
if (pch->avail) {
if (skb_queue_empty(&pch->file.xq) ||
!pch->had_frag) {
!pch->had_frag) {
if (pch->speed == 0)
nzero++;
else
Expand All @@ -1331,60 +1331,60 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
++nfree;
++totfree;
}
if (!pch->had_frag && i < ppp->nxchan)
ppp->nxchan = i;
if (!pch->had_frag && i < ppp->nxchan)
ppp->nxchan = i;
}
++i;
}
/*
* Don't start sending this packet unless at least half of
* the channels are free. This gives much better TCP
* performance if we have a lot of channels.
* Don't start sending this packet unless at least half of
* the channels are free. This gives much better TCP
* performance if we have a lot of channels.
*/
if (nfree == 0 || nfree < navail / 2)
return 0; /* can't take now, leave it in xmit_pending */
if (nfree == 0 || nfree < navail / 2)
return 0; /* can't take now, leave it in xmit_pending */

/* Do protocol field compression (XXX this should be optional) */
p = skb->data;
len = skb->len;
p = skb->data;
len = skb->len;
if (*p == 0) {
++p;
--len;
}

totlen = len;
nbigger = len % nfree;
nbigger = len % nfree;

/* skip to the channel after the one we last used
and start at that one */
/* skip to the channel after the one we last used
and start at that one */
list = &ppp->channels;
for (i = 0; i < ppp->nxchan; ++i) {
for (i = 0; i < ppp->nxchan; ++i) {
list = list->next;
if (list == &ppp->channels) {
i = 0;
if (list == &ppp->channels) {
i = 0;
break;
}
}

/* create a fragment for each channel */
/* create a fragment for each channel */
bits = B;
while (len > 0) {
while (len > 0) {
list = list->next;
if (list == &ppp->channels) {
i = 0;
if (list == &ppp->channels) {
i = 0;
continue;
}
pch = list_entry(list, struct channel, clist);
pch = list_entry(list, struct channel, clist);
++i;
if (!pch->avail)
continue;

/*
* Skip this channel if it has a fragment pending already and
* we haven't given a fragment to all of the free channels.
* Skip this channel if it has a fragment pending already and
* we haven't given a fragment to all of the free channels.
*/
if (pch->avail == 1) {
if (nfree > 0)
if (nfree > 0)
continue;
} else {
pch->avail = 1;
Expand All @@ -1393,32 +1393,32 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
/* check the channel's mtu and whether it is still attached. */
spin_lock_bh(&pch->downl);
if (pch->chan == NULL) {
/* can't use this channel, it's being deregistered */
/* can't use this channel, it's being deregistered */
if (pch->speed == 0)
nzero--;
else
totspeed -= pch->speed;
totspeed -= pch->speed;

spin_unlock_bh(&pch->downl);
pch->avail = 0;
totlen = len;
totfree--;
nfree--;
if (--navail == 0)
if (--navail == 0)
break;
continue;
}

/*
*if the channel speed is not set divide
*the packet evenly among the free channels;
*the packet evenly among the free channels;
*otherwise divide it according to the speed
*of the channel we are going to transmit on
*/
flen = len;
if (nfree > 0) {
if (pch->speed == 0) {
flen = totlen/nfree ;
flen = totlen/nfree;
if (nbigger > 0) {
flen++;
nbigger--;
Expand All @@ -1436,8 +1436,8 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
}

/*
*check if we are on the last channel or
*we exceded the lenght of the data to
*check if we are on the last channel or
*we exceded the lenght of the data to
*fragment
*/
if ((nfree <= 0) || (flen > len))
Expand All @@ -1448,29 +1448,29 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
*above formula will be equal or less than zero.
*Skip the channel in this case
*/
if (flen <= 0) {
if (flen <= 0) {
pch->avail = 2;
spin_unlock_bh(&pch->downl);
continue;
}

mtu = pch->chan->mtu - hdrlen;
if (mtu < 4)
mtu = 4;
mtu = pch->chan->mtu - hdrlen;
if (mtu < 4)
mtu = 4;
if (flen > mtu)
flen = mtu;
if (flen == len)
bits |= E;
frag = alloc_skb(flen + hdrlen + (flen == 0), GFP_ATOMIC);
if (flen == len)
bits |= E;
frag = alloc_skb(flen + hdrlen + (flen == 0), GFP_ATOMIC);
if (!frag)
goto noskb;
q = skb_put(frag, flen + hdrlen);
q = skb_put(frag, flen + hdrlen);

/* make the MP header */
/* make the MP header */
q[0] = PPP_MP >> 8;
q[1] = PPP_MP;
if (ppp->flags & SC_MP_XSHORTSEQ) {
q[2] = bits + ((ppp->nxseq >> 8) & 0xf);
q[2] = bits + ((ppp->nxseq >> 8) & 0xf);
q[3] = ppp->nxseq;
} else {
q[2] = bits;
Expand All @@ -1483,24 +1483,24 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)

/* try to send it down the channel */
chan = pch->chan;
if (!skb_queue_empty(&pch->file.xq) ||
if (!skb_queue_empty(&pch->file.xq) ||
!chan->ops->start_xmit(chan, frag))
skb_queue_tail(&pch->file.xq, frag);
pch->had_frag = 1;
pch->had_frag = 1;
p += flen;
len -= flen;
len -= flen;
++ppp->nxseq;
bits = 0;
spin_unlock_bh(&pch->downl);
}
ppp->nxchan = i;
ppp->nxchan = i;

return 1;

noskb:
spin_unlock_bh(&pch->downl);
if (ppp->debug & 1)
printk(KERN_ERR "PPP: no memory (fragment)\n");
printk(KERN_ERR "PPP: no memory (fragment)\n");
++ppp->dev->stats.tx_errors;
++ppp->nxseq;
return 1; /* abandon the frame */
Expand Down

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