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ixgbe: Specify Rx hash type WRT Rx desc RSS type

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RSS could be leveraged by taking account L4 src/dst ports
as ingredients, thus ingress skb Rx hash type should honor
such the real configuration.

Signed-off-by: Fan Du <fan.du@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Fan Du 2015-04-29 10:57:39 +08:00 committed by Jeff Kirsher
parent 5505bdb54d
commit 7edda4b871
1 changed files with 21 additions and 4 deletions
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25
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -1360,14 +1360,31 @@ static int __ixgbe_notify_dca(struct device *dev, void *data)
}
#endif /* CONFIG_IXGBE_DCA */
#define IXGBE_RSS_L4_TYPES_MASK \
((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \
(1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \
(1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \
(1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP))
static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
union ixgbe_adv_rx_desc *rx_desc,
struct sk_buff *skb)
{
if (ring->netdev->features & NETIF_F_RXHASH)
skb_set_hash(skb,
le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
PKT_HASH_TYPE_L3);
u16 rss_type;
if (!(ring->netdev->features & NETIF_F_RXHASH))
return;
rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
IXGBE_RXDADV_RSSTYPE_MASK;
if (!rss_type)
return;
skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
(IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ?
PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3);
}
#ifdef IXGBE_FCOE