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bna: TX Queue Depth Fix 

sk_buff unmap_array grows greater than 65536 (x2) with Tx ring of 65536.
Reducing TXQ depth and safe(max) acking of Tx events to 32768 (same as Rx).
Add defines for TX and RX queue depths.

Signed-off-by: Gurunatha Karaje <gkaraje@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rasesh Mody 2011-08-30 15:27:46 +00:00 committed by David S. Miller
parent dfee325ad2
commit 41eb5ba42d
2 changed files with 8 additions and 4 deletions
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4
drivers/net/ethernet/brocade/bna/bnad.h
View File

@ -86,6 +86,10 @@ struct bnad_rx_ctrl {
#define BNAD_MAX_Q_DEPTH 0x10000
#define BNAD_MIN_Q_DEPTH 0x200
#define BNAD_MAX_RXQ_DEPTH (BNAD_MAX_Q_DEPTH / bnad_rxqs_per_cq)
/* keeping MAX TX and RX Q depth equal */
#define BNAD_MAX_TXQ_DEPTH BNAD_MAX_RXQ_DEPTH
#define BNAD_JUMBO_MTU 9000
#define BNAD_NETIF_WAKE_THRESHOLD 8

8
drivers/net/ethernet/brocade/bna/bnad_ethtool.c
View File

@ -418,10 +418,10 @@ bnad_get_ringparam(struct net_device *netdev,
{
struct bnad *bnad = netdev_priv(netdev);
ringparam->rx_max_pending = BNAD_MAX_Q_DEPTH / bnad_rxqs_per_cq;
ringparam->rx_max_pending = BNAD_MAX_RXQ_DEPTH;
ringparam->rx_mini_max_pending = 0;
ringparam->rx_jumbo_max_pending = 0;
ringparam->tx_max_pending = BNAD_MAX_Q_DEPTH;
ringparam->tx_max_pending = BNAD_MAX_TXQ_DEPTH;
ringparam->rx_pending = bnad->rxq_depth;
ringparam->rx_mini_max_pending = 0;
@ -445,13 +445,13 @@ bnad_set_ringparam(struct net_device *netdev,
}
if (ringparam->rx_pending < BNAD_MIN_Q_DEPTH ||
ringparam->rx_pending > BNAD_MAX_Q_DEPTH / bnad_rxqs_per_cq ||
ringparam->rx_pending > BNAD_MAX_RXQ_DEPTH ||
!BNA_POWER_OF_2(ringparam->rx_pending)) {
mutex_unlock(&bnad->conf_mutex);
return -EINVAL;
}
if (ringparam->tx_pending < BNAD_MIN_Q_DEPTH ||
ringparam->tx_pending > BNAD_MAX_Q_DEPTH ||
ringparam->tx_pending > BNAD_MAX_TXQ_DEPTH ||
!BNA_POWER_OF_2(ringparam->tx_pending)) {
mutex_unlock(&bnad->conf_mutex);
return -EINVAL;