/* Clone a packet.
* The pkttag contents are NOT cloned.
*/
void *
osl_pktdup(osl_t *osh, void *skb)
{
void * p;
ASSERT(!PKTISCHAINED(skb));
/* clear the CTFBUF flag if set and map the rest of the buffer
* before cloning.
*/
PKTCTFMAP(osh, skb);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
if ((p = pskb_copy((struct sk_buff *)skb, GFP_ATOMIC)) == NULL)
#else
if ((p = skb_clone((struct sk_buff *)skb, GFP_ATOMIC)) == NULL)
#endif
return NULL;
#ifdef CTFPOOL
if (PKTISFAST(osh, skb)) {
ctfpool_t *ctfpool;
/* if the buffer allocated from ctfpool is cloned then
* we can't be sure when it will be freed. since there
* is a chance that we will be losing a buffer
* from our pool, we increment the refill count for the
* object to be alloced later.
*/
ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb);
ASSERT(ctfpool != NULL);
PKTCLRFAST(osh, p);
PKTCLRFAST(osh, skb);
ctfpool->refills++;
}
#endif /* CTFPOOL */
/* Clear PKTC context */
PKTSETCLINK(p, NULL);
PKTCCLRFLAGS(p);
PKTCSETCNT(p, 1);
PKTCSETLEN(p, PKTLEN(osh, skb));
/* skb_clone copies skb->cb.. we don't want that */
if (osh->pub.pkttag)
OSL_PKTTAG_CLEAR(p);
/* Increment the packet counter */
atomic_inc(&osh->pktalloced);
return (p);
}
void * BCMFASTPATH
osl_pkt_frmnative(osl_t *osh, void *pkt)
{
struct sk_buff *nskb;
if (osh->pub.pkttag)
OSL_PKTTAG_CLEAR(pkt);
for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next) {
atomic_add(PKTISCHAINED(nskb) ? PKTCCNT(nskb) : 1, &osh->pktalloced);
}
return (void *)pkt;
}
/* Convert a driver packet to native(OS) packet
* In the process, packettag is zeroed out before sending up
* IP code depends on skb->cb to be setup correctly with various options
* In our case, that means it should be 0
*/
struct sk_buff * BCMFASTPATH
osl_pkt_tonative(osl_t *osh, void *pkt)
{
struct sk_buff *nskb;
if (osh->pub.pkttag)
OSL_PKTTAG_CLEAR(pkt);
/* Decrement the packet counter */
for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next) {
atomic_sub(PKTISCHAINED(nskb) ? PKTCCNT(nskb) : 1, &osh->pktalloced);
}
return (struct sk_buff *)pkt;
}
void *
osl_pktdup(osl_t *osh, void *skb)
{
void * p;
ASSERT(!PKTISCHAINED(skb));
PKTCTFMAP(osh, skb);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
if ((p = pskb_copy((struct sk_buff *)skb, GFP_ATOMIC)) == NULL)
#else
if ((p = skb_clone((struct sk_buff *)skb, GFP_ATOMIC)) == NULL)
#endif
return NULL;
#ifdef CTFPOOL
if (PKTISFAST(osh, skb)) {
ctfpool_t *ctfpool;
ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb);
ASSERT(ctfpool != NULL);
PKTCLRFAST(osh, p);
PKTCLRFAST(osh, skb);
ctfpool->refills++;
}
#endif
PKTSETCLINK(p, NULL);
PKTCCLRFLAGS(p);
PKTCSETCNT(p, 1);
PKTCSETLEN(p, PKTLEN(osh, skb));
if (osh->pub.pkttag)
OSL_PKTTAG_CLEAR(p);
atomic_inc(&osh->pktalloced);
return (p);
}
void *
osl_pktdup(osl_t *osh, void *skb)
{
void * p;
ASSERT(!PKTISCHAINED(skb));
PKTCTFMAP(osh, skb);
if ((p = skb_clone((struct sk_buff *)skb, GFP_ATOMIC)) == NULL)
return NULL;
#ifdef CTFPOOL
if (PKTISFAST(osh, skb)) {
ctfpool_t *ctfpool;
ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb);
ASSERT(ctfpool != NULL);
PKTCLRFAST(osh, p);
PKTCLRFAST(osh, skb);
ctfpool->refills++;
}
#endif
PKTSETCLINK(p, NULL);
PKTCCLRATTR(p);
if (osh->pub.pkttag)
OSL_PKTTAG_CLEAR(p);
atomic_inc(&osh->pktalloced);
return (p);
}
