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Message-ID: <CADxym3Z-rSBH9HvpeZHk4rLOZSb+u=dACUo98upsqFUEqr-Gsg@mail.gmail.com>
Date: Sun, 1 Sep 2024 20:48:48 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: Simon Horman <horms@...nel.org>
Cc: idosch@...dia.com, kuba@...nel.org, davem@...emloft.net,
edumazet@...gle.com, pabeni@...hat.com, dsahern@...nel.org,
dongml2@...natelecom.cn, amcohen@...dia.com, gnault@...hat.com,
bpoirier@...dia.com, b.galvani@...il.com, razor@...ckwall.org,
petrm@...dia.com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 07/12] net: vxlan: add skb drop reasons to vxlan_rcv()
On Fri, Aug 30, 2024 at 11:36 PM Simon Horman <horms@...nel.org> wrote:
>
> On Fri, Aug 30, 2024 at 09:59:56AM +0800, Menglong Dong wrote:
> > Introduce skb drop reasons to the function vxlan_rcv(). Following new
> > vxlan drop reasons are added:
> >
> > VXLAN_DROP_INVALID_HDR
> > VXLAN_DROP_VNI_NOT_FOUND
> >
> > And Following core skb drop reason is added:
> >
> > SKB_DROP_REASON_IP_TUNNEL_ECN
> >
> > Signed-off-by: Menglong Dong <dongml2@...natelecom.cn>
> > ---
> > v2:
> > - rename the drop reasons, as Ido advised.
> > - document the drop reasons
> > ---
> > drivers/net/vxlan/drop.h | 10 ++++++++++
> > drivers/net/vxlan/vxlan_core.c | 35 +++++++++++++++++++++++++---------
> > include/net/dropreason-core.h | 6 ++++++
> > 3 files changed, 42 insertions(+), 9 deletions(-)
> >
> > diff --git a/drivers/net/vxlan/drop.h b/drivers/net/vxlan/drop.h
> > index 876b4a9de92f..416532633881 100644
> > --- a/drivers/net/vxlan/drop.h
> > +++ b/drivers/net/vxlan/drop.h
> > @@ -11,6 +11,8 @@
> > #define VXLAN_DROP_REASONS(R) \
> > R(VXLAN_DROP_INVALID_SMAC) \
> > R(VXLAN_DROP_ENTRY_EXISTS) \
> > + R(VXLAN_DROP_INVALID_HDR) \
> > + R(VXLAN_DROP_VNI_NOT_FOUND) \
> > /* deliberate comment for trailing \ */
> >
> > enum vxlan_drop_reason {
> > @@ -23,6 +25,14 @@ enum vxlan_drop_reason {
> > * one pointing to a nexthop
> > */
> > VXLAN_DROP_ENTRY_EXISTS,
> > + /**
> > + * @VXLAN_DROP_INVALID_HDR: the vxlan header is invalid, such as:
>
> > + * 1) the reserved fields are not zero
> > + * 2) the "I" flag is not set
>
> Maybe:
> * ...: VXLAN header is invalid. E.g.:
> * 1) reserved fields are not zero
> * 2) "I" flag is not set
>
Sounds nice!
> > + */
> > + VXLAN_DROP_INVALID_HDR,
> > + /** @VXLAN_DROP_VNI_NOT_FOUND: no vxlan device found for the vni */
>
> Maybe: no VXLAN device found for VNI
>
Okay!
Thanks!
Menglong Dong
> > + VXLAN_DROP_VNI_NOT_FOUND,
> > };
>
> ...
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