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In pbuf_take(): Got rid of variable 'f'. Fixed stylo (typo in style). Renamed 'top' to 'head'.

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likewise 2003-04-03 08:50:57 +00:00
parent dbad0d5723
commit 9ea10ce05d
1 changed files with 12 additions and 15 deletions
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27
src/core/pbuf.c
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@ -788,28 +788,24 @@ pbuf_dechain(struct pbuf *p)
* Used to queue packets on behalf of the lwIP stack, such as
* ARP based queueing.
*
* @param f Head of pbuf chain to process
* @param p Head of pbuf chain to process
*
* @return Pointer to new head of pbuf chain
*/
struct pbuf *
pbuf_take(struct pbuf *f)
pbuf_take(struct pbuf *p)
{
struct pbuf *p, *prev, *top;
LWIP_ASSERT("pbuf_take: f != NULL\n", f != NULL);
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_take(%p)\n", (void*)f));
struct pbuf *q , *prev, *head;
LWIP_ASSERT("pbuf_take: p != NULL\n", p != NULL);
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_take(%p)\n", (void*)p));
prev = NULL;
p = f;
top = f;
head = p;
/* iterate through pbuf chain */
do
{
/* pbuf is of type PBUF_REF? */
if (p->flags == PBUF_FLAG_REF)
{
/* the replacement pbuf */
struct pbuf *q;
if (p->flags == PBUF_FLAG_REF) {
DEBUGF(PBUF_DEBUG | DBG_TRACE, ("pbuf_take: encountered PBUF_REF %p\n", (void *)p));
/* allocate a pbuf (w/ payload) fully in RAM */
/* PBUF_POOL buffers are faster if we can use them */
@ -837,11 +833,12 @@ pbuf_take(struct pbuf *f)
/* remove linkage to original pbuf */
if (prev != NULL) {
/* prev->next == p at this point */
LWIP_ASSERT("prev->next == p", prev->next == p);
/* break chain and insert new pbuf instead */
prev->next = q;
/* prev == NULL, so we replaced the top pbuf of the chain */
/* prev == NULL, so we replaced the head pbuf of the chain */
} else {
top = q;
head = q;
}
/* copy pbuf payload */
memcpy(q->payload, p->payload, p->len);
@ -860,7 +857,7 @@ pbuf_take(struct pbuf *f)
p = q;
} else {
/* deallocate chain */
pbuf_free(top);
pbuf_free(head);
DEBUGF(PBUF_DEBUG | 2, ("pbuf_take: failed to allocate replacement pbuf for %p\n", (void *)p));
return NULL;
}
@ -875,6 +872,6 @@ pbuf_take(struct pbuf *f)
} while (p);
DEBUGF(PBUF_DEBUG | DBG_TRACE | 1, ("pbuf_take: end of chain reached.\n"));
return top;
return head;
}