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| author |   Eric Dumazet <edumazet@google.com> | 2025-04-07 16:35:59 +0000 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-04-08 12:30:55 -0700 |
| commit | c3025e94daa9ce84ef0e53df983b5bf2fbd76ea6 (patch) | |
| tree | ae27369d8f8e2ba0f96e7038fa7a996d7d9c8d28 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | amd-xgbe: Convert to SPDX identifier (diff) | |
| download | wireguard-linux-c3025e94daa9ce84ef0e53df983b5bf2fbd76ea6.tar.xz wireguard-linux-c3025e94daa9ce84ef0e53df983b5bf2fbd76ea6.zip | |
net: rps: change skb_flow_limit() hash function
As explained in commit f3483c8e1da6 ("net: rfs: hash function change"),
masking low order bits of skb_get_hash(skb) has low entropy.
A NIC with 32 RX queues uses the 5 low order bits of rss key
to select a queue. This means all packets landing to a given
queue share the same 5 low order bits.
Switch to hash_32() to reduce hash collisions.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250407163602.170356-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions