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From: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>
Subject: Re: [PATCH net-next 2/6] sk_buff: track dst status in slow_gro
Date: Fri, 30 Jul 2021 04:08:24 -0700	[thread overview]
Message-ID: <20210730040824.097e0e9d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <a6d684d37ca7598dc89b1ff886f9b049393f0d99.1627405778.git.pabeni@redhat.com>

On Wed, 28 Jul 2021 18:24:00 +0200 Paolo Abeni wrote:
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 3ff18300d210..b1e5bbfcc926 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -992,6 +992,7 @@ static inline struct dst_entry *skb_dst(const struct sk_buff *skb)
>   */
>  static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)
>  {
> +	skb->slow_gro |= !!dst;
>  	skb->_skb_refdst = (unsigned long)dst;
>  }
>  
> @@ -1008,6 +1009,7 @@ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)
>  static inline void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst)
>  {
>  	WARN_ON(!rcu_read_lock_held() && !rcu_read_lock_bh_held());
> +	skb->slow_gro = !!dst;

why is this one = and not |= ?

>  	skb->_skb_refdst = (unsigned long)dst | SKB_DST_NOREF;
>  }

  reply	other threads:[~2021-07-30 11:08 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-28 16:23 [PATCH net-next 0/6] sk_buff: optimize GRO for the common case Paolo Abeni
2021-07-28 16:23 ` [PATCH net-next 1/6] sk_buff: introduce 'slow_gro' flags Paolo Abeni
2021-07-28 16:24 ` [PATCH net-next 2/6] sk_buff: track dst status in slow_gro Paolo Abeni
2021-07-30 11:08   ` Jakub Kicinski [this message]
2021-07-30 13:08     ` Paolo Abeni
2021-07-28 16:24 ` [PATCH net-next 3/6] sk_buff: track extension " Paolo Abeni
2021-07-28 16:24 ` [PATCH net-next 4/6] net: optimize GRO for the common case Paolo Abeni
2021-07-28 16:24 ` [PATCH net-next 5/6] skbuff: allow 'slow_gro' for skb carring sock reference Paolo Abeni
2021-07-28 16:24 ` [PATCH net-next 6/6] veth: use skb_prepare_for_gro() Paolo Abeni
2021-07-29 11:20 ` [PATCH net-next 0/6] sk_buff: optimize GRO for the common case patchwork-bot+netdevbpf

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