/* add a page worth of packets to a freelist */
NDIS_STATUS
shared_lb_addpage(
IN shared_info_t *shared,
IN struct lbfree *l,
IN BOOLEAN piomode,
page_t *page,
IN uint ipp,
IN uint lbdatasz
)
{
struct lbuf *lb;
char *va;
ULONG pa;
uint i;
ASSERT(l->npages < (ROUNDUP(l->total, ipp) / ipp));
/* add it to the page list */
l->pages[l->npages] = *page;
l->npages++;
/*
* Split each page into one or more LBUFSZ chunks,
* link them together, and put each on the freelist.
*/
va = page->va;
pa = page->pa.LowPart;
for (i = 0; i < ipp; i++) {
char *vbuf = NULL;
uint pbuf = 0;
lb = (struct lbuf*)(va + lbdatasz);
if (lbdatasz) {
vbuf = va;
pbuf = pa;
}
/* initialize lbuf fields */
lb->link = lb->next = NULL;
lb->head = lb->data = lb->tail = vbuf;
lb->end = (uchar*)lb;
lb->len = 0;
lb->pa = piomode? 0xdeadbeef: pbuf;
lb->p = NULL;
lb->l = l;
/* put it on the freelist */
shared_lb_put(shared, l, lb);
if (lbdatasz) {
va += LBUFSZ;
pa += LBUFSZ;
} else
va += sizeof(struct lbuf);
}
return (NDIS_STATUS_SUCCESS);
}
/* bust apart and free an rx ndis packet and buffer descriptor and lbuf */
void
shared_free_ndispacket(
IN shared_info_t *shared,
IN ND_PKT *p
)
{
struct lbuf *lb;
/* pick the associated lbuf off the ndis packet */
lb = (struct lbuf*) NEXTP(p);
ASSERT(lb);
ASSERT(lb->p == p);
NEXTP(p) = NULL;
lb->p = NULL;
/* free the ndis packet and buffer descriptors */
shared_free_pkt(p);
/* put our lbuf back on the freelist */
shared_lb_put(shared, lb->l, lb);
}
static void BCMFASTPATH
bcm_rpc_tp_pktfree(rpc_tp_info_t * rpcb, rpc_buf_t *b, bool send)
{
uint32 free_cnt = 0;
#if defined(NDIS)
struct lbuf *lb = (struct lbuf*)b;
struct lbuf *next;
ASSERT(rpcb);
ASSERT(lb != NULL);
do {
next = lb->next;
lb->next = NULL;
ASSERT(lb->p == NULL);
shared_lb_put(rpcb->sh, lb->l, lb);
free_cnt++;
lb = next;
} while (lb);
#else
struct sk_buff *skb = (struct sk_buff*)b, *next;
#if defined(CTFPOOL)
next = skb;
while (next != NULL) {
next = next->next;
free_cnt++;
}
PKTFREE(rpcb->osh, skb, FALSE);
#else
while (skb) {
next = skb->next;
if (skb->destructor) {
/* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if destructor exists */
dev_kfree_skb_any(skb);
} else {
/* can free immediately (even in_irq()) if destructor does not exist */
dev_kfree_skb(skb);
}
skb = next;
free_cnt++;
}
#endif /* defined(CTFPOOL) */
RPC_TP_LOCK(rpcb);
rpcb->buf_cnt_inuse -= free_cnt;
if (rpcb->rxflowctrl && (rpcb->buf_cnt_inuse < RPCRX_WM_LO)) {
rpcb->rxflowctrl = FALSE;
RPC_TP_ERR(("%s, rxflowctrl change to %d\n", __FUNCTION__, rpcb->rxflowctrl));
dbus_flowctrl_rx(rpcb->bus, FALSE);
}
RPC_TP_UNLOCK(rpcb);
#endif /* NDIS */
}
