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Staging: benet: cleanup a check while posting rx buffers

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This patch cleans up the way to check if there is enough space in the rx_q
while posting buffers.

Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sathya Perla 2008-12-05 15:52:15 +05:30 committed by Greg Kroah-Hartman
parent a9acfa42bf
commit 535deaa35e
1 changed files with 2 additions and 13 deletions
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15
drivers/staging/benet/be_int.c
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@ -623,25 +623,14 @@ void be_post_eth_rx_buffs(struct be_net_object *pnob)
*/ */
INIT_LIST_HEAD(&rxbl); INIT_LIST_HEAD(&rxbl);
for (num_bufs = 0; num_bufs < max_bufs; ++num_bufs) { for (num_bufs = 0; num_bufs < max_bufs &&
!pnob->rx_page_info[pnob->rx_pg_info_hd].page; ++num_bufs) {
rxbp = &pnob->eth_rx_bufs[num_bufs]; rxbp = &pnob->eth_rx_bufs[num_bufs];
pg_hd = pnob->rx_pg_info_hd; pg_hd = pnob->rx_pg_info_hd;
rx_page_info = &pnob->rx_page_info[pg_hd]; rx_page_info = &pnob->rx_page_info[pg_hd];
if (!page) { if (!page) {
/*
* before we allocate a page make sure that we
* have space in the RX queue to post the buffer.
* We check for two vacant slots since with
* 2K frags, we will need two slots.
*/
if ((pnob->rx_ctxt[(pnob->rx_q_hd + num_bufs) &
(pnob->rx_q_len - 1)] != NULL)
|| (pnob->rx_ctxt[(pnob->rx_q_hd + num_bufs + 1) %
pnob->rx_q_len] != NULL)) {
break;
}
page = alloc_pages(alloc_flags, page_order); page = alloc_pages(alloc_flags, page_order);
if (unlikely(page == NULL)) { if (unlikely(page == NULL)) {
adapter->be_stat.bes_ethrx_post_fail++; adapter->be_stat.bes_ethrx_post_fail++;