From: Vladislav Zolotarov Date: Wed, 13 Aug 2008 22:53:38 +0000 (-0700) Subject: bnx2x: No LRO without Rx checksum X-Git-Tag: v2.6.27-rc4~103^2~11 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df0f23439a69eb5ca30668612f1c4e20041b5341;p=linux-2.6 bnx2x: No LRO without Rx checksum No LRO without Rx checksum Disabling LRO when Rx checksum is disabled Signed-off-by: Vladislav Zolotarov Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 6fe19726ae..d29f22763f 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -8272,33 +8272,6 @@ static int bnx2x_set_coalesce(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 (data & ETH_FLAG_LRO) { - if (!(dev->features & NETIF_F_LRO)) { - dev->features |= NETIF_F_LRO; - bp->flags |= TPA_ENABLE_FLAG; - changed = 1; - } - - } else if (dev->features & NETIF_F_LRO) { - 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 void bnx2x_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering) { @@ -8400,6 +8373,34 @@ 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; + + /* TPA requires Rx CSUM offloading */ + if ((data & ETH_FLAG_LRO) && bp->rx_csum) { + if (!(dev->features & NETIF_F_LRO)) { + dev->features |= NETIF_F_LRO; + bp->flags |= TPA_ENABLE_FLAG; + changed = 1; + } + + } else if (dev->features & NETIF_F_LRO) { + 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); @@ -8410,9 +8411,19 @@ static u32 bnx2x_get_rx_csum(struct net_device *dev) static int bnx2x_set_rx_csum(struct net_device *dev, u32 data) { struct bnx2x *bp = netdev_priv(dev); + int rc = 0; bp->rx_csum = data; - return 0; + + /* 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)