qlge: bugfix: Add missing rx buf clean index on early exit.

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

The large receive buffer queue is not properly tracking the current
index in the case where an early exit occurs. This can happen when a
page alloc or dma mapping fails. If this occurs the queue will get
out of sync and invalid indexes can be written to the hardware.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

authored by

Ron Mercer and committed by

David S. Miller 17 years ago 79d2b29e def48b6e

1 changed file

expand all

drivers

net

qlge

qlge_main.c

drivers/net/qlge/qlge_main.c

··· 898 898 lbq_desc->index); 899 899 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC); 900 900 if (lbq_desc->p.lbq_page == NULL) { 901 + rx_ring->lbq_clean_idx = clean_idx; 901 902 QPRINTK(qdev, RX_STATUS, ERR, 902 903 "Couldn't get a page.\n"); 903 904 return; ··· 908 907 0, PAGE_SIZE, 909 908 PCI_DMA_FROMDEVICE); 910 909 if (pci_dma_mapping_error(qdev->pdev, map)) { 910 + rx_ring->lbq_clean_idx = clean_idx; 911 911 put_page(lbq_desc->p.lbq_page); 912 912 lbq_desc->p.lbq_page = NULL; 913 913 QPRINTK(qdev, RX_STATUS, ERR,