[net-next-2.6 4/5] ixgbe: add rxhash support
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STALE5644d
SUPERSEDED: 1 (0M)
From: Jeff Kirsher <hidden>
Date: 2011-05-07 10:25:30
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 30 in this series; 1 review trailer.
Revisions (30)
From: Emil Tantilov <redacted> feed RSS hash into skb->rxhash Signed-off-by: Emil Tantilov <redacted> Tested-by: Evan Swanson <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ixgbe/ixgbe_ethtool.c | 7 ++++++- drivers/net/ixgbe/ixgbe_main.c | 14 +++++++++++++- 2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index f2efa32..545b231 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c@@ -2253,8 +2253,13 @@ static int ixgbe_set_flags(struct net_device *netdev, u32 data) need_reset = (data & ETH_FLAG_RXVLAN) != (netdev->features & NETIF_F_HW_VLAN_RX); + if ((data & ETH_FLAG_RXHASH) && + !(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) + return -EOPNOTSUPP; + rc = ethtool_op_set_flags(netdev, data, ETH_FLAG_LRO | ETH_FLAG_NTUPLE | - ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN); + ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | + ETH_FLAG_RXHASH); if (rc) return rc;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index eebb192..56cc9a1 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c@@ -1063,8 +1063,14 @@ static int __ixgbe_notify_dca(struct device *dev, void *data) return 0; } - #endif /* CONFIG_IXGBE_DCA */ + +static inline void ixgbe_rx_hash(union ixgbe_adv_rx_desc *rx_desc, + struct sk_buff *skb) +{ + skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss); +} + /** * ixgbe_receive_skb - Send a completed packet up the stack * @adapter: board private structure
@@ -1456,6 +1462,8 @@ static void ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, } ixgbe_rx_checksum(adapter, rx_desc, skb); + if (adapter->netdev->features & NETIF_F_RXHASH) + ixgbe_rx_hash(rx_desc, skb); /* probably a little skewed due to removing CRC */ total_rx_bytes += skb->len;
@@ -7361,6 +7369,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, netdev->features |= NETIF_F_TSO; netdev->features |= NETIF_F_TSO6; netdev->features |= NETIF_F_GRO; + netdev->features |= NETIF_F_RXHASH; switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB:
@@ -7441,6 +7450,9 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, if (err) goto err_sw_init; + if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) + netdev->features &= ~NETIF_F_RXHASH; + switch (pdev->device) { case IXGBE_DEV_ID_82599_SFP: /* Only this subdevice supports WOL */
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1.7.4.4