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Date: Sat, 29 Oct 2022 08:30:11 -0700 From: Eric Dumazet <edumazet@...gle.com> To: menglong8.dong@...il.com Cc: kuba@...nel.org, davem@...emloft.net, pabeni@...hat.com, yoshfuji@...ux-ipv6.org, dsahern@...nel.org, imagedong@...cent.com, kafai@...com, asml.silence@...il.com, keescook@...omium.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH net-next 1/9] net: skb: introduce try_kfree_skb() On Sat, Oct 29, 2022 at 6:11 AM <menglong8.dong@...il.com> wrote: > > From: Menglong Dong <imagedong@...cent.com> > > In order to simply the code, introduce try_kfree_skb(), which allow > SKB_NOT_DROPPED_YET to be passed. When the reason is SKB_NOT_DROPPED_YET, > consume_skb() will be called to free the skb normally. Otherwise, > kfree_skb_reason() will be called. > > Signed-off-by: Menglong Dong <imagedong@...cent.com> > --- > include/linux/skbuff.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h > index 59c9fd55699d..f722accc054e 100644 > --- a/include/linux/skbuff.h > +++ b/include/linux/skbuff.h > @@ -1236,6 +1236,15 @@ static inline void consume_skb(struct sk_buff *skb) > } > #endif > > +static inline void try_kfree_skb(struct sk_buff *skb, > + enum skb_drop_reason reason) > +{ > + if (reason != SKB_NOT_DROPPED_YET) > + kfree_skb_reason(skb, reason); > + else > + consume_skb(skb); > +} > + My proposal looks better IMO https://patchwork.kernel.org/project/netdevbpf/patch/20221028133043.2312984-2-edumazet@google.com/
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