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Fixed missing variable.

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likewise 2003-03-31 08:34:02 +00:00
parent 00809b49f1
commit e6cc785fff
1 changed files with 7 additions and 8 deletions
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15
src/core/pbuf.c
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@ -415,7 +415,7 @@ pbuf_refresh(void)
void void
pbuf_realloc(struct pbuf *p, u16_t new_len) pbuf_realloc(struct pbuf *p, u16_t new_len)
{ {
struct pbuf *q, *r; struct pbuf *q;
u16_t rem_len; /* remaining length */ u16_t rem_len; /* remaining length */
s16_t grow; s16_t grow;
@ -701,6 +701,7 @@ struct pbuf *
pbuf_dechain(struct pbuf *p) pbuf_dechain(struct pbuf *p)
{ {
struct pbuf *q; struct pbuf *q;
u8_t deallocated;
/* tail */ /* tail */
q = p->next; q = p->next;
/* pbuf has successor in chain? */ /* pbuf has successor in chain? */
@ -713,13 +714,11 @@ pbuf_dechain(struct pbuf *p)
/* decouple pbuf from remainder */ /* decouple pbuf from remainder */
p->tot_len = p->len; p->tot_len = p->len;
p->next = NULL; p->next = NULL;
#if PBUF_CHAIN_DOES_REFER /** TODO (WORK IN PROGRESS) */ /* q is no longer referenced by p, free */
/* q is no longer referenced by p */
deallocated = pbuf_free(q); deallocated = pbuf_free(q);
DEBUGF(PBUF_DEBUG | DBG_FRESH | 2, ("pbuf_dechain: unreferencing %p\n", (void *) q)); DEBUGF(PBUF_DEBUG | DBG_FRESH | 2, ("pbuf_dechain: unreferencing %p\n", (void *) q));
#endif
/* return remaining tail or NULL if deallocated */ /* return remaining tail or NULL if deallocated */
return (deallocated? NULL: q); return (deallocated > 0? NULL: q);
} }
/** /**
@ -785,19 +784,19 @@ pbuf_take(struct pbuf *f)
/* remove linkage from original pbuf */ /* remove linkage from original pbuf */
p->next = NULL; p->next = NULL;
/* remove linkage to original pbuf */ /* remove linkage to original pbuf */
if (prev != NULL) if (prev != NULL) {
/* prev->next == p at this point */ /* prev->next == p at this point */
/* break chain and insert new pbuf instead */ /* break chain and insert new pbuf instead */
prev->next = q; prev->next = q;
/* p is no longer pointed to by prev or by our caller, /* p is no longer pointed to by prev or by our caller,
* as the caller must do p = pbuf_take(p); so free it * as the caller must do p = pbuf_take(p); so free it
* from our usage. * from reference through linkage.
* note that we have set p->next to NULL already so that * note that we have set p->next to NULL already so that
* we will not free the rest of the chain by accident. * we will not free the rest of the chain by accident.
*/ */
pbuf_free(p); pbuf_free(p);
/* prev == NULL, so we replaced the top pbuf of the chain */ /* prev == NULL, so we replaced the top pbuf of the chain */
else } else
top = q; top = q;
/* copy pbuf payload */ /* copy pbuf payload */
memcpy(q->payload, p->payload, p->len); memcpy(q->payload, p->payload, p->len);