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Date: Thu, 19 May 2011 16:15:52 -0700
From: Mahesh Bandewar <maheshb@...gle.com>
To: Matt Carlson <mcarlson@...adcom.com>
Cc: David Miller <davem@...emloft.net>,
linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 10/13] tg3: Consolidate all netdev feature assignments
On Thu, May 19, 2011 at 3:12 PM, Matt Carlson <mcarlson@...adcom.com> wrote:
> This patch consolidates all the netdev feature bit assignments to one
> location.
>
> Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
> Reviewed-by: Michael Chan <mchan@...adcom.com>
> ---
> drivers/net/tg3.c | 51 ++++++++++++++++++++++++---------------------------
> 1 files changed, 24 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
> index 09fe067..5bf2ce1 100644
> --- a/drivers/net/tg3.c
> +++ b/drivers/net/tg3.c
> @@ -13602,19 +13602,6 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
> tg3_flag(tp, 5750_PLUS))
> tg3_flag_set(tp, 5705_PLUS);
>
> - /* 5700 B0 chips do not support checksumming correctly due
> - * to hardware bugs.
> - */
> - if (tp->pci_chip_rev_id != CHIPREV_ID_5700_B0) {
> - u32 features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
> -
> - if (tg3_flag(tp, 5755_PLUS))
> - features |= NETIF_F_IPV6_CSUM;
> - tp->dev->features |= features;
> - tp->dev->hw_features |= features;
> - tp->dev->vlan_features |= features;
> - }
> -
> /* Determine TSO capabilities */
> if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
> ; /* Do nothing. HW bug. */
> @@ -14922,7 +14909,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> u32 sndmbx, rcvmbx, intmbx;
> char str[40];
> u64 dma_mask, persist_dma_mask;
> - u32 hw_features = 0;
> + u32 features = 0;
>
> printk_once(KERN_INFO "%s\n", version);
>
> @@ -14958,8 +14945,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
>
> SET_NETDEV_DEV(dev, &pdev->dev);
>
> - dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
> -
> tp = netdev_priv(dev);
> tp->pdev = pdev;
> tp->dev = dev;
> @@ -15039,7 +15024,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> if (dma_mask > DMA_BIT_MASK(32)) {
> err = pci_set_dma_mask(pdev, dma_mask);
> if (!err) {
> - dev->features |= NETIF_F_HIGHDMA;
> + features |= NETIF_F_HIGHDMA;
> err = pci_set_consistent_dma_mask(pdev,
> persist_dma_mask);
> if (err < 0) {
> @@ -15060,6 +15045,18 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
>
> tg3_init_bufmgr_config(tp);
>
> + features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
> +
> + /* 5700 B0 chips do not support checksumming correctly due
> + * to hardware bugs.
> + */
> + if (tp->pci_chip_rev_id != CHIPREV_ID_5700_B0) {
> + features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
> +
> + if (tg3_flag(tp, 5755_PLUS))
> + features |= NETIF_F_IPV6_CSUM;
> + }
> +
> /* TSO is on by default on chips that support hardware TSO.
> * Firmware TSO on older chips gives lower performance, so it
> * is off by default, but can be enabled using ethtool.
> @@ -15067,24 +15064,20 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> if ((tg3_flag(tp, HW_TSO_1) ||
> tg3_flag(tp, HW_TSO_2) ||
> tg3_flag(tp, HW_TSO_3)) &&
> - (dev->features & NETIF_F_IP_CSUM))
> - hw_features |= NETIF_F_TSO;
> + (features & NETIF_F_IP_CSUM))
> + features |= NETIF_F_TSO;
> if (tg3_flag(tp, HW_TSO_2) || tg3_flag(tp, HW_TSO_3)) {
> - if (dev->features & NETIF_F_IPV6_CSUM)
> - hw_features |= NETIF_F_TSO6;
> + if (features & NETIF_F_IPV6_CSUM)
> + features |= NETIF_F_TSO6;
> if (tg3_flag(tp, HW_TSO_3) ||
> GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
> (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
> GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX) ||
> GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
> GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
> - hw_features |= NETIF_F_TSO_ECN;
> + features |= NETIF_F_TSO_ECN;
> }
>
> - dev->hw_features |= hw_features;
> - dev->features |= hw_features;
> - dev->vlan_features |= hw_features;
> -
> /*
> * Add loopback capability only for a subset of devices that support
> * MAC-LOOPBACK. Eventually this need to be enhanced to allow INT-PHY
> @@ -15093,7 +15086,11 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780 &&
> !tg3_flag(tp, CPMU_PRESENT))
> /* Add the loopback capability */
> - dev->hw_features |= NETIF_F_LOOPBACK;
> + features |= NETIF_F_LOOPBACK;
> +
> + dev->features |= features;
This will set the loopback by default for the described sub-set.
> + dev->hw_features |= features;
Yes, you just want to add that here only.
> + dev->vlan_features |= features;
>
> if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 &&
> !tg3_flag(tp, TSO_CAPABLE) &&
> --
> 1.7.3.4
>
>
> --
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