Use hardware computed Toeplitz hash for incoming flowids
Use the Toeplitz hash value as source for the flowid. This makes the hash value more suitable for so-called hash bucket algorithms which are used in the FreeBSD's TCP/IP stack when RSS is enabled. Sponsored by: Mellanox Technologies MFC after: 1 week
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=296910
@ -616,7 +616,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
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goto next;
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}
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mb->m_pkthdr.flowid = cq->ring;
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/* forward Toeplitz compatible hash value */
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mb->m_pkthdr.flowid = be32_to_cpu(cqe->immed_rss_invalid);
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M_HASHTYPE_SET(mb, M_HASHTYPE_OPAQUE);
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mb->m_pkthdr.rcvif = dev;
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if (be32_to_cpu(cqe->vlan_my_qpn) &
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@ -1060,7 +1060,7 @@ mlx4_en_transmit(struct ifnet *dev, struct mbuf *m)
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/* Compute which queue to use */
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if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) {
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i = m->m_pkthdr.flowid % priv->tx_ring_num;
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i = (m->m_pkthdr.flowid % 128) % priv->tx_ring_num;
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}
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else {
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i = mlx4_en_select_queue(dev, m);
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