From: Jay Cliburn <[EMAIL PROTECTED]> Fix up some constants relating to max and min ring descriptor counts. Also add functionality to enable ethtool to set tx and rx ring parameters.
Signed-off-by: Jay Cliburn <[EMAIL PROTECTED]> --- drivers/net/atl1/atl1.h | 4 +- drivers/net/atl1/atl1_ethtool.c | 78 ++++++++++++++++++++++++++++++++++++++- 2 files changed, 78 insertions(+), 4 deletions(-) diff --git a/drivers/net/atl1/atl1.h b/drivers/net/atl1/atl1.h index cc18016..da4bf87 100644 --- a/drivers/net/atl1/atl1.h +++ b/drivers/net/atl1/atl1.h @@ -44,11 +44,11 @@ struct atl1_adapter; #define ATL1_MAX_INTR 3 #define ATL1_DEFAULT_TPD 256 -#define ATL1_MAX_TPD 1023 +#define ATL1_MAX_TPD 1024 #define ATL1_MIN_TPD 64 #define ATL1_DEFAULT_RFD 512 #define ATL1_MIN_RFD 128 -#define ATL1_MAX_RFD 2047 +#define ATL1_MAX_RFD 2048 #define ATL1_GET_DESC(R, i, type) (&(((type *)((R)->desc))[i])) #define ATL1_RFD_DESC(R, i) ATL1_GET_DESC(R, i, struct rx_free_desc) diff --git a/drivers/net/atl1/atl1_ethtool.c b/drivers/net/atl1/atl1_ethtool.c index 8ce4d06..b7cd7b3 100644 --- a/drivers/net/atl1/atl1_ethtool.c +++ b/drivers/net/atl1/atl1_ethtool.c @@ -308,8 +308,8 @@ static void atl1_get_ringparam(struct net_device *netdev, struct atl1_tpd_ring *txdr = &adapter->tpd_ring; struct atl1_rfd_ring *rxdr = &adapter->rfd_ring; - ring->rx_max_pending = 2048; - ring->tx_max_pending = 1024; + ring->rx_max_pending = ATL1_MAX_RFD; + ring->tx_max_pending = ATL1_MAX_TPD; ring->rx_mini_max_pending = 0; ring->rx_jumbo_max_pending = 0; ring->rx_pending = rxdr->count; @@ -318,6 +318,79 @@ static void atl1_get_ringparam(struct net_device *netdev, ring->rx_jumbo_pending = 0; } +static int atl1_set_ringparam (struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct atl1_adapter *adapter = netdev_priv(netdev); + struct atl1_tpd_ring *tpdr = &adapter->tpd_ring; + struct atl1_rrd_ring *rrdr = &adapter->rrd_ring; + struct atl1_rfd_ring *rfdr = &adapter->rfd_ring; + + struct atl1_tpd_ring tpd_old, tpd_new; + struct atl1_rfd_ring rfd_old, rfd_new; + struct atl1_rrd_ring rrd_old, rrd_new; + struct atl1_ring_header rhdr_old, rhdr_new; + int err; + + tpd_old = adapter->tpd_ring; + rfd_old = adapter->rfd_ring; + rrd_old = adapter->rrd_ring; + rhdr_old = adapter->ring_header; + + if (netif_running(adapter->netdev)) + atl1_down(adapter); + + rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD); + rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD : + rfdr->count; + rfdr->count = (rfdr->count + 3) & ~3; + rrdr->count = rfdr->count; + + tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD); + tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD : + tpdr->count; + tpdr->count = (tpdr->count + 3) & ~3; + + if (netif_running(adapter->netdev)) { + /* try to get new resources before deleting old */ + err = atl1_setup_ring_resources(adapter); + if (err) + goto err_setup_ring; + + /* + * save the new, restore the old in order to free it, + * then restore the new back again + */ + + rfd_new = adapter->rfd_ring; + rrd_new = adapter->rrd_ring; + tpd_new = adapter->tpd_ring; + rhdr_new = adapter->ring_header; + adapter->rfd_ring = rfd_old; + adapter->rrd_ring = rrd_old; + adapter->tpd_ring = tpd_old; + adapter->ring_header = rhdr_old; + atl1_free_ring_resources(adapter); + adapter->rfd_ring = rfd_new; + adapter->rrd_ring = rrd_new; + adapter->tpd_ring = tpd_new; + adapter->ring_header = rhdr_new; + + err = atl1_up(adapter); + if (err) + return err; + } + return 0; + +err_setup_ring: + adapter->rfd_ring = rfd_old; + adapter->rrd_ring = rrd_old; + adapter->tpd_ring = tpd_old; + adapter->ring_header = rhdr_old; + atl1_up(adapter); + return err; +} + static void atl1_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *epause) { @@ -417,6 +490,7 @@ const struct ethtool_ops atl1_ethtool_ops = { .get_wol = atl1_get_wol, .set_wol = atl1_set_wol, .get_ringparam = atl1_get_ringparam, + .set_ringparam = atl1_set_ringparam, .get_pauseparam = atl1_get_pauseparam, .set_pauseparam = atl1_set_pauseparam, .get_rx_csum = atl1_get_rx_csum, - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/