netdev - Re: [PATCH net-next 08/10] udp: add udp_drops

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Message-ID: <2e85dd1b-7b2e-473c-92c6-e93600224ef9@kernel.org>
Date: Wed, 17 Sep 2025 09:47:14 -0600
From: David Ahern <dsahern@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>, "David S . Miller"
 <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Willem de Bruijn <willemb@...gle.com>,
 Kuniyuki Iwashima <kuniyu@...gle.com>, netdev@...r.kernel.org,
 eric.dumazet@...il.com
Subject: Re: [PATCH net-next 08/10] udp: add udp_drops_inc() helper

On 9/16/25 10:09 AM, Eric Dumazet wrote:
> Generic sk_drops_inc() reads sk->sk_drop_counters.
> We know the precise location for UDP sockets.
> 
> Move sk_drop_counters out of sock_read_rxtx
> so that sock_write_rxtx starts at a cache line boundary.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---
>  include/net/sock.h |  2 +-
>  include/net/udp.h  |  5 +++++
>  net/core/sock.c    |  1 -
>  net/ipv4/udp.c     | 12 ++++++------
>  net/ipv6/udp.c     |  6 +++---
>  5 files changed, 15 insertions(+), 11 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>