Re: [PATCH] net: bnx2x: convert to hw_features

Vladislav Zolotarov
2011-04-10T15:10:31Z

> +int bnx2x_set_features(struct net_device *dev, u32 features)
> +{
> + struct bnx2x *bp = netdev_priv(dev);
> + u32 flags = bp->flags;
> +
> + if (features & NETIF_F_LRO)
> + flags |= TPA_ENABLE_FLAG;
> + else
> + flags &= ~TPA_ENABLE_FLAG;
> +
> + if (flags ^ bp->flags) {
> + bp->flags = flags;
> +
> + return bnx2x_reload_if_running(dev);
> }
>
> - return rc;
> + return 0;
> }

Thanks a lot, Michal. Looks ok but one remark below.

Every time bnx2x_reload_if_running(dev) is called one has to check if
there is still a recovery process in progress like u did in the
bnx2x_fix_features(). So this check is missing in the function above.

I'd like to do some unit testing with the new code. I'll let u know
about the results tomorrow.

Thanks again,
vlad

>
> void bnx2x_tx_timeout(struct net_device *dev)
> diff --git a/drivers/net/bnx2x/bnx2x_cmn.h b/drivers/net/bnx2x/bnx2x_cmn.h
> index 775fef0..1cdab69 100644
> --- a/drivers/net/bnx2x/bnx2x_cmn.h
> +++ b/drivers/net/bnx2x/bnx2x_cmn.h
> @@ -431,6 +431,9 @@ void bnx2x_free_mem_bp(struct bnx2x *bp);
> */
> int bnx2x_change_mtu(struct net_device *dev, int new_mtu);
>
> +u32 bnx2x_fix_features(struct net_device *dev, u32 features);
> +int bnx2x_set_features(struct net_device *dev, u32 features);
> +
> /**
> * tx timeout netdev callback
> *
> diff --git a/drivers/net/bnx2x/bnx2x_ethtool.c b/drivers/net/bnx2x/bnx2x_ethtool.c
> index 1479994..ad7d91e 100644
> --- a/drivers/net/bnx2x/bnx2x_ethtool.c
> +++ b/drivers/net/bnx2x/bnx2x_ethtool.c
> @@ -1299,91 +1299,6 @@ static int bnx2x_set_pauseparam(struct net_device *dev,
> return 0;
> }
>
> -static int bnx2x_set_flags(struct net_device *dev, u32 data)
> -{
> - struct bnx2x *bp = netdev_priv(dev);
> - int changed = 0;
> - int rc = 0;
> -
> - if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
> - printk(KERN_ERR "Handling parity error recovery. Try again later\n");
> - return -EAGAIN;
> - }
> -
> - if (!(data & ETH_FLAG_RXVLAN))
> - return -EINVAL;
> -
> - if ((data & ETH_FLAG_LRO) && bp->rx_csum && bp->disable_tpa)
> - return -EINVAL;
> -
> - rc = ethtool_op_set_flags(dev, data, ETH_FLAG_LRO | ETH_FLAG_RXVLAN |
> - ETH_FLAG_TXVLAN | ETH_FLAG_RXHASH);
> - if (rc)
> - return rc;
> -
> - /* TPA requires Rx CSUM offloading */
> - if ((data & ETH_FLAG_LRO) && bp->rx_csum) {
> - if (!(bp->flags & TPA_ENABLE_FLAG)) {
> - bp->flags |= TPA_ENABLE_FLAG;
> - changed = 1;
> - }
> - } else if (bp->flags & TPA_ENABLE_FLAG) {
> - dev->features &= ~NETIF_F_LRO;
> - bp->flags &= ~TPA_ENABLE_FLAG;
> - changed = 1;
> - }
> -
> - if (changed && netif_running(dev)) {
> - bnx2x_nic_unload(bp, UNLOAD_NORMAL);
> - rc = bnx2x_nic_load(bp, LOAD_NORMAL);
> - }
> -
> - return rc;
> -}
> -
> -static u32 bnx2x_get_rx_csum(struct net_device *dev)
> -{
> - struct bnx2x *bp = netdev_priv(dev);
> -
> - return bp->rx_csum;
> -}
> -
> -static int bnx2x_set_rx_csum(struct net_device *dev, u32 data)
> -{
> - struct bnx2x *bp = netdev_priv(dev);
> - int rc = 0;
> -
> - if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
> - printk(KERN_ERR "Handling parity error recovery. Try again later\n");
> - return -EAGAIN;
> - }
> -
> - bp->rx_csum = data;
> -
> - /* Disable TPA, when Rx CSUM is disabled. Otherwise all
> - TPA'ed packets will be discarded due to wrong TCP CSUM */
> - if (!data) {
> - u32 flags = ethtool_op_get_flags(dev);
> -
> - rc = bnx2x_set_flags(dev, (flags & ~ETH_FLAG_LRO));
> - }
> -
> - return rc;
> -}
> -
> -static int bnx2x_set_tso(struct net_device *dev, u32 data)
> -{
> - if (data) {
> - dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
> - dev->features |= NETIF_F_TSO6;
> - } else {
> - dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO_ECN);
> - dev->features &= ~NETIF_F_TSO6;
> - }
> -
> - return 0;
> -}
> -
> static const struct {
> char string[ETH_GSTRING_LEN];
> } bnx2x_tests_str_arr[BNX2X_NUM_TESTS] = {
> @@ -2207,16 +2122,6 @@ static const struct ethtool_ops bnx2x_ethtool_ops = {
> .set_ringparam = bnx2x_set_ringparam,
> .get_pauseparam = bnx2x_get_pauseparam,
> .set_pauseparam = bnx2x_set_pauseparam,
> - .get_rx_csum = bnx2x_get_rx_csum,
> - .set_rx_csum = bnx2x_set_rx_csum,
> - .get_tx_csum = ethtool_op_get_tx_csum,
> - .set_tx_csum = ethtool_op_set_tx_hw_csum,
> - .set_flags = bnx2x_set_flags,
> - .get_flags = ethtool_op_get_flags,
> - .get_sg = ethtool_op_get_sg,
> - .set_sg = ethtool_op_set_sg,
> - .get_tso = ethtool_op_get_tso,
> - .set_tso = bnx2x_set_tso,
> .self_test = bnx2x_self_test,
> .get_sset_count = bnx2x_get_sset_count,
> .get_strings = bnx2x_get_strings,
> diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
> index f3cf889..ffa0611 100644
> --- a/drivers/net/bnx2x/bnx2x_main.c
> +++ b/drivers/net/bnx2x/bnx2x_main.c
> @@ -7661,6 +7661,7 @@ exit_leader_reset:
> bp->is_leader = 0;
> bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08);
> smp_wmb();
> + netdev_update_features(bp->dev);
> return rc;
> }
>
> @@ -7759,6 +7760,7 @@ static void bnx2x_parity_recover(struct bnx2x *bp)
> bp->recovery_state =
> BNX2X_RECOVERY_DONE;
> smp_wmb();
> + netdev_update_features(bp->dev);
> return;
> }
> }
> @@ -8954,6 +8956,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp)
> static int bnx2x_open(struct net_device *dev)
> {
> struct bnx2x *bp = netdev_priv(dev);
> + int rc;
>
> netif_carrier_off(dev);
>
> @@ -8993,7 +8996,9 @@ static int bnx2x_open(struct net_device *dev)
>
> bp->recovery_state = BNX2X_RECOVERY_DONE;
>
> - return bnx2x_nic_load(bp, LOAD_OPEN);
> + rc = bnx2x_nic_load(bp, LOAD_OPEN);
> + netdev_update_features(bp->dev);
> + return rc;
> }
>
> /* called with rtnl_lock */
> @@ -9304,6 +9309,8 @@ static const struct net_device_ops bnx2x_netdev_ops = {
> .ndo_validate_addr = eth_validate_addr,
> .ndo_do_ioctl = bnx2x_ioctl,
> .ndo_change_mtu = bnx2x_change_mtu,
> + .ndo_fix_features = bnx2x_fix_features,
> + .ndo_set_features = bnx2x_set_features,
> .ndo_tx_timeout = bnx2x_tx_timeout,
> #ifdef CONFIG_NET_POLL_CONTROLLER
> .ndo_poll_controller = poll_bnx2x,
> @@ -9430,20 +9437,18 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
>
> dev->netdev_ops = &bnx2x_netdev_ops;
> bnx2x_set_ethtool_ops(dev);
> - dev->features |= NETIF_F_SG;
> - dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
> +
> if (bp->flags & USING_DAC_FLAG)
> dev->features |= NETIF_F_HIGHDMA;
> - dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
> - dev->features |= NETIF_F_TSO6;
> - dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
>
> - dev->vlan_features |= NETIF_F_SG;
> - dev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
> - if (bp->flags & USING_DAC_FLAG)
> - dev->vlan_features |= NETIF_F_HIGHDMA;
> - dev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
> - dev->vlan_features |= NETIF_F_TSO6;
> + dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
> + NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 |
> + NETIF_F_HW_VLAN_TX;
> +
> + dev->features |= dev->hw_features | NETIF_F_HW_VLAN_RX;
> +
> + dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
> + NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_HIGHDMA;
>
> #ifdef BCM_DCBNL
> dev->dcbnl_ops = &bnx2x_dcbnl_ops;