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dpif-netdev/mfex: Add ipv4 profile based hashing.

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For packets which don't already have a hash calculated,
miniflow_hash_5tuple() calculates the hash of a packet
using the previously built miniflow.

This commit adds IPv4 profile specific hashing which
uses fixed offsets into the packet to improve hashing
performance.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Co-authored-by: Harry van Haaren <harry.van.haaren@intel.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Co-authored-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Kumar Amber <kumar.amber@intel.com>
Acked-by: Cian Ferriter <cian.ferriter@intel.com>
Acked-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
This commit is contained in:
Kumar Amber
2022-04-12 19:23:08 +05:30
committed by Ian Stokes
parent dc80822761
commit af864cedb0
3 changed files with 43 additions and 1 deletions
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6
lib/flow.c
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@@ -1017,6 +1017,9 @@ miniflow_extract(struct dp_packet *packet, struct miniflow *dst)
miniflow_push_be16(mf, tp_dst, tcp->tcp_dst);
miniflow_push_be16(mf, ct_tp_src, ct_tp_src);
miniflow_push_be16(mf, ct_tp_dst, ct_tp_dst);
if (dl_type == htons(ETH_TYPE_IP)) {
dp_packet_update_rss_hash_ipv4_tcp_udp(packet);
}
}
}
} else if (OVS_LIKELY(nw_proto == IPPROTO_UDP)) {
@@ -1027,6 +1030,9 @@ miniflow_extract(struct dp_packet *packet, struct miniflow *dst)
miniflow_push_be16(mf, tp_dst, udp->udp_dst);
miniflow_push_be16(mf, ct_tp_src, ct_tp_src);
miniflow_push_be16(mf, ct_tp_dst, ct_tp_dst);
if (dl_type == htons(ETH_TYPE_IP)) {
dp_packet_update_rss_hash_ipv4_tcp_udp(packet);
}
}
} else if (OVS_LIKELY(nw_proto == IPPROTO_SCTP)) {
if (OVS_LIKELY(size >= SCTP_HEADER_LEN)) {