From: Michael Chan michael.chan@broadcom.com
commit b8056e8434b037fdab08158fea99ed7bc8ef3a74 upstream.
We have logic to maintain network counters across resets by storing the counters in bp->net_stats_prev before reset. But not all resets will clear the counters. Certain resets that don't need to change the number of rings do not clear the counters. The current logic accumulates the counters before all resets, causing big jumps in the counters after some resets, such as ethtool -G.
Fix it by only accumulating the counters during reset if the irq_re_init parameter is set. The parameter signifies that all rings and interrupts will be reset and that means that the counters will also be reset.
Reported-by: Vijayendra Suman vijayendra.suman@oracle.com Fixes: b8875ca356f1 ("bnxt_en: Save ring statistics before reset.") Signed-off-by: Michael Chan michael.chan@broadcom.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -7177,7 +7177,7 @@ static void __bnxt_close_nic(struct bnxt bnxt_free_skbs(bp);
/* Save ring stats before shutdown */ - if (bp->bnapi) + if (bp->bnapi && irq_re_init) bnxt_get_ring_stats(bp, &bp->net_stats_prev); if (irq_re_init) { bnxt_free_irq(bp);