mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2025-02-26 06:40:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

Increased number of debug messages to see pbuf chain actions.

Browse Source
This commit is contained in:
likewise 2003-06-05 14:15:46 +00:00
parent 0fc282e182
commit 031a4cbdd8
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/core/pbuf.c
View File

@ -206,6 +206,7 @@ pbuf_alloc(pbuf_layer l, u16_t length, pbuf_flag flag)
struct pbuf *p, *q, *r;
u16_t offset;
s32_t rem_len; /* remaining length */
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_alloc(length=%u)\n", length));
/* determine header offset */
offset = 0;
@ -233,6 +234,7 @@ pbuf_alloc(pbuf_layer l, u16_t length, pbuf_flag flag)
case PBUF_POOL:
/* allocate head of pbuf chain into p */
p = pbuf_pool_alloc();
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_alloc: allocated pbuf %p\n", p));
if (p == NULL) {
#ifdef PBUF_STATS
++lwip_stats.pbuf.err;
@ -291,7 +293,7 @@ pbuf_alloc(pbuf_layer l, u16_t length, pbuf_flag flag)
r = q;
}
/* end of chain */
r->next = NULL;
//r->next = NULL;
break;
case PBUF_RAM:
@ -331,6 +333,7 @@ pbuf_alloc(pbuf_layer l, u16_t length, pbuf_flag flag)
}
/* set reference count */
p->ref = 1;
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_alloc(length=%u) == %p\n", length, (void *)p));
return p;
}
@ -534,6 +537,7 @@ pbuf_free(struct pbuf *p)
DEBUGF(PBUF_DEBUG | DBG_TRACE | 2, ("pbuf_free(p == NULL) was called.\n"));
return 0;
}
DEBUGF(PBUF_DEBUG | DBG_TRACE | 3, ("pbuf_free(%p)\n", (void *)p));
PERF_START;
@ -557,6 +561,7 @@ pbuf_free(struct pbuf *p)
if (p->ref == 0) {
/* remember next pbuf in chain for next iteration */
q = p->next;
DEBUGF( PBUF_DEBUG | 2, ("pbuf_free: deallocating %p\n", (void *)p));
/* is this a pbuf from the pool? */
if (p->flags == PBUF_FLAG_POOL) {
p->len = p->tot_len = PBUF_POOL_BUFSIZE;
@ -575,6 +580,7 @@ pbuf_free(struct pbuf *p)
/* p->ref > 0, this pbuf is still referenced to */
/* (and so the remaining pbufs in chain as well) */
} else {
DEBUGF( PBUF_DEBUG | 2, ("pbuf_free: %p has ref %u, ending here.\n", (void *)p, p->ref));
/* stop walking through chain */
p = NULL;
}
@ -661,7 +667,7 @@ pbuf_chain(struct pbuf *h, struct pbuf *t)
p->next = t;
/* t is now referenced to one more time */
pbuf_ref(t);
DEBUGF(PBUF_DEBUG | DBG_FRESH | 2, ("pbuf_chain: referencing tail %p\n", (void *) t));
DEBUGF(PBUF_DEBUG | DBG_FRESH | 2, ("pbuf_chain: %p references %p\n", (void *)p, (void *)t));
}
/* For packet queueing. Note that queued packets must be dequeued first
@ -869,6 +875,7 @@ pbuf_dechain(struct pbuf *p)
/* q is no longer referenced by p, free it */
DEBUGF(PBUF_DEBUG | DBG_STATE, ("pbuf_dechain: unreferencing %p\n", (void *) q));
tail_gone = pbuf_free(q);
if (tail_gone > 0) DEBUGF(PBUF_DEBUG | DBG_STATE, ("pbuf_dechain: deallocated %p (as it is no longer referenced)\n", (void *) q));
/* return remaining tail or NULL if deallocated */
}
/* assert tot_len invariant: (p->tot_len == p->len + (p->next? p->next->tot_len: 0) */