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Date: Thu, 7 Apr 2011 13:23:28 -0700
From: "Matt Carlson" <mcarlson@...adcom.com>
To: "Micha?? Miros??aw" <mirq-linux@...e.qmqm.pl>
cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"Matthew Carlson" <mcarlson@...adcom.com>,
"Michael Chan" <mchan@...adcom.com>
Subject: Re: [PATCH] net: tg3: convert to hw_features
Nice cleanup. I visually studied it for a bit and didn't find anything
wrong.
Acked-by: Matt Carlson <mcarlson@...adcom.com>
On Thu, Apr 07, 2011 at 06:35:07AM -0700, Micha?? Miros??aw wrote:
> Cleanup hint: Some features are calculated in tg3_get_invariants() and
> the rest in its caller --- tg3_init_one(). This is not changed here.
>
> Signed-off-by: Micha?? Miros??aw <mirq-linux@...e.qmqm.pl>
> ---
> [build tested only]
>
> drivers/net/tg3.c | 135 +++++++++++++----------------------------------------
> drivers/net/tg3.h | 2 -
> 2 files changed, 32 insertions(+), 105 deletions(-)
>
> diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
> index d37ae87..38962af 100644
> --- a/drivers/net/tg3.c
> +++ b/drivers/net/tg3.c
> @@ -4816,7 +4816,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
> skb = copy_skb;
> }
>
> - if ((tp->tg3_flags & TG3_FLAG_RX_CHECKSUMS) &&
> + if ((tp->dev->features & NETIF_F_RXCSUM) &&
> (desc->type_flags & RXD_FLAG_TCPUDP_CSUM) &&
> (((desc->ip_tcp_csum & RXD_TCPCSUM_MASK)
> >> RXD_TCPCSUM_SHIFT) == 0xffff))
> @@ -6127,6 +6127,16 @@ dma_error:
> return NETDEV_TX_OK;
> }
>
> +static u32 tg3_fix_features(struct net_device *dev, u32 features)
> +{
> + struct tg3 *tp = netdev_priv(dev);
> +
> + if (dev->mtu > ETH_DATA_LEN && (tp->tg3_flags2 & TG3_FLG2_5780_CLASS))
> + features &= ~NETIF_F_ALL_TSO;
> +
> + return features;
> +}
> +
> static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp,
> int new_mtu)
> {
> @@ -6134,14 +6144,16 @@ static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp,
>
> if (new_mtu > ETH_DATA_LEN) {
> if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) {
> + netdev_update_features(dev);
> tp->tg3_flags2 &= ~TG3_FLG2_TSO_CAPABLE;
> - ethtool_op_set_tso(dev, 0);
> } else {
> tp->tg3_flags |= TG3_FLAG_JUMBO_RING_ENABLE;
> }
> } else {
> - if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)
> + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) {
> tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE;
> + netdev_update_features(dev);
> + }
> tp->tg3_flags &= ~TG3_FLAG_JUMBO_RING_ENABLE;
> }
> }
> @@ -10021,33 +10033,6 @@ static void tg3_set_msglevel(struct net_device *dev, u32 value)
> tp->msg_enable = value;
> }
>
> -static int tg3_set_tso(struct net_device *dev, u32 value)
> -{
> - struct tg3 *tp = netdev_priv(dev);
> -
> - if (!(tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE)) {
> - if (value)
> - return -EINVAL;
> - return 0;
> - }
> - if ((dev->features & NETIF_F_IPV6_CSUM) &&
> - ((tp->tg3_flags2 & TG3_FLG2_HW_TSO_2) ||
> - (tp->tg3_flags2 & TG3_FLG2_HW_TSO_3))) {
> - if (value) {
> - dev->features |= NETIF_F_TSO6;
> - if ((tp->tg3_flags2 & TG3_FLG2_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)
> - dev->features |= NETIF_F_TSO_ECN;
> - } else
> - dev->features &= ~(NETIF_F_TSO6 | NETIF_F_TSO_ECN);
> - }
> - return ethtool_op_set_tso(dev, value);
> -}
> -
> static int tg3_nway_reset(struct net_device *dev)
> {
> struct tg3 *tp = netdev_priv(dev);
> @@ -10270,50 +10255,6 @@ static int tg3_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam
> return err;
> }
>
> -static u32 tg3_get_rx_csum(struct net_device *dev)
> -{
> - struct tg3 *tp = netdev_priv(dev);
> - return (tp->tg3_flags & TG3_FLAG_RX_CHECKSUMS) != 0;
> -}
> -
> -static int tg3_set_rx_csum(struct net_device *dev, u32 data)
> -{
> - struct tg3 *tp = netdev_priv(dev);
> -
> - if (tp->tg3_flags & TG3_FLAG_BROKEN_CHECKSUMS) {
> - if (data != 0)
> - return -EINVAL;
> - return 0;
> - }
> -
> - spin_lock_bh(&tp->lock);
> - if (data)
> - tp->tg3_flags |= TG3_FLAG_RX_CHECKSUMS;
> - else
> - tp->tg3_flags &= ~TG3_FLAG_RX_CHECKSUMS;
> - spin_unlock_bh(&tp->lock);
> -
> - return 0;
> -}
> -
> -static int tg3_set_tx_csum(struct net_device *dev, u32 data)
> -{
> - struct tg3 *tp = netdev_priv(dev);
> -
> - if (tp->tg3_flags & TG3_FLAG_BROKEN_CHECKSUMS) {
> - if (data != 0)
> - return -EINVAL;
> - return 0;
> - }
> -
> - if (tp->tg3_flags3 & TG3_FLG3_5755_PLUS)
> - ethtool_op_set_tx_ipv6_csum(dev, data);
> - else
> - ethtool_op_set_tx_csum(dev, data);
> -
> - return 0;
> -}
> -
> static int tg3_get_sset_count(struct net_device *dev, int sset)
> {
> switch (sset) {
> @@ -11390,11 +11331,6 @@ static const struct ethtool_ops tg3_ethtool_ops = {
> .set_ringparam = tg3_set_ringparam,
> .get_pauseparam = tg3_get_pauseparam,
> .set_pauseparam = tg3_set_pauseparam,
> - .get_rx_csum = tg3_get_rx_csum,
> - .set_rx_csum = tg3_set_rx_csum,
> - .set_tx_csum = tg3_set_tx_csum,
> - .set_sg = ethtool_op_set_sg,
> - .set_tso = tg3_set_tso,
> .self_test = tg3_self_test,
> .get_strings = tg3_get_strings,
> .set_phys_id = tg3_set_phys_id,
> @@ -13262,11 +13198,6 @@ done:
>
> static struct pci_dev * __devinit tg3_find_peer(struct tg3 *);
>
> -static inline void vlan_features_add(struct net_device *dev, unsigned long flags)
> -{
> - dev->vlan_features |= flags;
> -}
> -
> static inline u32 tg3_rx_ret_ring_size(struct tg3 *tp)
> {
> if (tp->tg3_flags3 & TG3_FLG3_LRG_PROD_RING_CAP)
> @@ -13513,16 +13444,14 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
> /* 5700 B0 chips do not support checksumming correctly due
> * to hardware bugs.
> */
> - if (tp->pci_chip_rev_id == CHIPREV_ID_5700_B0)
> - tp->tg3_flags |= TG3_FLAG_BROKEN_CHECKSUMS;
> - else {
> - unsigned long features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_GRO;
> + if (tp->pci_chip_rev_id != CHIPREV_ID_5700_B0) {
> + u32 features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
>
> - tp->tg3_flags |= TG3_FLAG_RX_CHECKSUMS;
> if (tp->tg3_flags3 & TG3_FLG3_5755_PLUS)
> features |= NETIF_F_IPV6_CSUM;
> tp->dev->features |= features;
> - vlan_features_add(tp->dev, features);
> + tp->dev->hw_features |= features;
> + tp->dev->vlan_features |= features;
> }
>
> /* Determine TSO capabilities */
> @@ -14794,6 +14723,7 @@ static const struct net_device_ops tg3_netdev_ops = {
> .ndo_do_ioctl = tg3_ioctl,
> .ndo_tx_timeout = tg3_tx_timeout,
> .ndo_change_mtu = tg3_change_mtu,
> + .ndo_fix_features = tg3_fix_features,
> #ifdef CONFIG_NET_POLL_CONTROLLER
> .ndo_poll_controller = tg3_poll_controller,
> #endif
> @@ -14824,6 +14754,7 @@ 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;
>
> printk_once(KERN_INFO "%s\n", version);
>
> @@ -14984,27 +14915,25 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> * is off by default, but can be enabled using ethtool.
> */
> if ((tp->tg3_flags2 & TG3_FLG2_HW_TSO) &&
> - (dev->features & NETIF_F_IP_CSUM)) {
> - dev->features |= NETIF_F_TSO;
> - vlan_features_add(dev, NETIF_F_TSO);
> - }
> + (dev->features & NETIF_F_IP_CSUM))
> + hw_features |= NETIF_F_TSO;
> if ((tp->tg3_flags2 & TG3_FLG2_HW_TSO_2) ||
> (tp->tg3_flags2 & TG3_FLG2_HW_TSO_3)) {
> - if (dev->features & NETIF_F_IPV6_CSUM) {
> - dev->features |= NETIF_F_TSO6;
> - vlan_features_add(dev, NETIF_F_TSO6);
> - }
> + if (dev->features & NETIF_F_IPV6_CSUM)
> + hw_features |= NETIF_F_TSO6;
> if ((tp->tg3_flags2 & TG3_FLG2_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) {
> - dev->features |= NETIF_F_TSO_ECN;
> - vlan_features_add(dev, NETIF_F_TSO_ECN);
> - }
> + GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
> + hw_features |= NETIF_F_TSO_ECN;
> }
>
> + dev->hw_features |= hw_features;
> + dev->features |= hw_features;
> + dev->vlan_features |= hw_features;
> +
> if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 &&
> !(tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE) &&
> !(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH)) {
> @@ -15133,7 +15062,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
> }
>
> netdev_info(dev, "RXcsums[%d] LinkChgREG[%d] MIirq[%d] ASF[%d] TSOcap[%d]\n",
> - (tp->tg3_flags & TG3_FLAG_RX_CHECKSUMS) != 0,
> + (dev->features & NETIF_F_RXCSUM) != 0,
> (tp->tg3_flags & TG3_FLAG_USE_LINKCHG_REG) != 0,
> (tp->phy_flags & TG3_PHYFLG_USE_MI_INTERRUPT) != 0,
> (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) != 0,
> diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
> index e7880d5..73dda27 100644
> --- a/drivers/net/tg3.h
> +++ b/drivers/net/tg3.h
> @@ -2883,7 +2883,6 @@ struct tg3 {
> u32 tg3_flags;
> #define TG3_FLAG_TAGGED_STATUS 0x00000001
> #define TG3_FLAG_TXD_MBOX_HWBUG 0x00000002
> -#define TG3_FLAG_RX_CHECKSUMS 0x00000004
> #define TG3_FLAG_USE_LINKCHG_REG 0x00000008
> #define TG3_FLAG_ENABLE_ASF 0x00000020
> #define TG3_FLAG_ASPM_WORKAROUND 0x00000040
> @@ -2909,7 +2908,6 @@ struct tg3 {
> #define TG3_FLAG_PAUSE_AUTONEG 0x02000000
> #define TG3_FLAG_CPMU_PRESENT 0x04000000
> #define TG3_FLAG_40BIT_DMA_BUG 0x08000000
> -#define TG3_FLAG_BROKEN_CHECKSUMS 0x10000000
> #define TG3_FLAG_JUMBO_CAPABLE 0x20000000
> #define TG3_FLAG_CHIP_RESETTING 0x40000000
> #define TG3_FLAG_INIT_COMPLETE 0x80000000
> --
> 1.7.2.5
>
>
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