diff mbox series

[net-next,05/12] ipv4: ip_tunnel: Unmask upper DSCP bits in ip_tunnel_bind_dev()

Message ID 20240905165140.3105140-6-idosch@nvidia.com (mailing list archive)
State Accepted
Commit e7191e517a03d025405c7df730b400ad4118474e
Delegated to: Netdev Maintainers
Headers show
Series Unmask upper DSCP bits - part 4 (last) | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 16 this patch: 16
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-09-07--06-00 (tests: 722)

Commit Message

Ido Schimmel Sept. 5, 2024, 4:51 p.m. UTC
Unmask the upper DSCP bits when initializing an IPv4 flow key via
ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
in the future we could perform the FIB lookup according to the full DSCP
value.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
---
 net/ipv4/ip_tunnel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Guillaume Nault Sept. 6, 2024, 11:36 a.m. UTC | #1
On Thu, Sep 05, 2024 at 07:51:33PM +0300, Ido Schimmel wrote:
> Unmask the upper DSCP bits when initializing an IPv4 flow key via
> ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
> in the future we could perform the FIB lookup according to the full DSCP
> value.
> 
> Signed-off-by: Ido Schimmel <idosch@nvidia.com>
> ---
>  net/ipv4/ip_tunnel.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
> index 18964394d6bd..b632c128ecb7 100644
> --- a/net/ipv4/ip_tunnel.c
> +++ b/net/ipv4/ip_tunnel.c
> @@ -293,7 +293,7 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
>  
>  		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
>  				    iph->saddr, tunnel->parms.o_key,
> -				    RT_TOS(iph->tos), dev_net(dev),
> +				    iph->tos & INET_DSCP_MASK, dev_net(dev),

The net/inet_dscp.h header file is only included in patch 6, while it's
needed here in patch 5.

>  				    tunnel->parms.link, tunnel->fwmark, 0, 0);
>  		rt = ip_route_output_key(tunnel->net, &fl4);
>  
> -- 
> 2.46.0
>
Ido Schimmel Sept. 6, 2024, 1:45 p.m. UTC | #2
On Fri, Sep 06, 2024 at 01:36:35PM +0200, Guillaume Nault wrote:
> On Thu, Sep 05, 2024 at 07:51:33PM +0300, Ido Schimmel wrote:
> > Unmask the upper DSCP bits when initializing an IPv4 flow key via
> > ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
> > in the future we could perform the FIB lookup according to the full DSCP
> > value.
> > 
> > Signed-off-by: Ido Schimmel <idosch@nvidia.com>
> > ---
> >  net/ipv4/ip_tunnel.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
> > index 18964394d6bd..b632c128ecb7 100644
> > --- a/net/ipv4/ip_tunnel.c
> > +++ b/net/ipv4/ip_tunnel.c
> > @@ -293,7 +293,7 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
> >  
> >  		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
> >  				    iph->saddr, tunnel->parms.o_key,
> > -				    RT_TOS(iph->tos), dev_net(dev),
> > +				    iph->tos & INET_DSCP_MASK, dev_net(dev),
> 
> The net/inet_dscp.h header file is only included in patch 6, while it's
> needed here in patch 5.

Thanks. Probably happened when I reordered the patches. However, it
doesn't affect bisectability since the header is included via include/net/ip.h

> 
> >  				    tunnel->parms.link, tunnel->fwmark, 0, 0);
> >  		rt = ip_route_output_key(tunnel->net, &fl4);
> >  
> > -- 
> > 2.46.0
> > 
>
Guillaume Nault Sept. 6, 2024, 1:52 p.m. UTC | #3
On Fri, Sep 06, 2024 at 04:45:35PM +0300, Ido Schimmel wrote:
> On Fri, Sep 06, 2024 at 01:36:35PM +0200, Guillaume Nault wrote:
> > On Thu, Sep 05, 2024 at 07:51:33PM +0300, Ido Schimmel wrote:
> > > Unmask the upper DSCP bits when initializing an IPv4 flow key via
> > > ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
> > > in the future we could perform the FIB lookup according to the full DSCP
> > > value.
> > > 
> > > Signed-off-by: Ido Schimmel <idosch@nvidia.com>
> > > ---
> > >  net/ipv4/ip_tunnel.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
> > > index 18964394d6bd..b632c128ecb7 100644
> > > --- a/net/ipv4/ip_tunnel.c
> > > +++ b/net/ipv4/ip_tunnel.c
> > > @@ -293,7 +293,7 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
> > >  
> > >  		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
> > >  				    iph->saddr, tunnel->parms.o_key,
> > > -				    RT_TOS(iph->tos), dev_net(dev),
> > > +				    iph->tos & INET_DSCP_MASK, dev_net(dev),
> > 
> > The net/inet_dscp.h header file is only included in patch 6, while it's
> > needed here in patch 5.
> 
> Thanks. Probably happened when I reordered the patches. However, it
> doesn't affect bisectability since the header is included via include/net/ip.h

Okay, no need for a v2 then.
I'll ack the remaining patches.

And thanks again for your work!


> > >  				    tunnel->parms.link, tunnel->fwmark, 0, 0);
> > >  		rt = ip_route_output_key(tunnel->net, &fl4);
> > >  
> > > -- 
> > > 2.46.0
> > > 
> > 
>
Guillaume Nault Sept. 6, 2024, 1:52 p.m. UTC | #4
On Thu, Sep 05, 2024 at 07:51:33PM +0300, Ido Schimmel wrote:
> Unmask the upper DSCP bits when initializing an IPv4 flow key via
> ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
> in the future we could perform the FIB lookup according to the full DSCP
> value.

Reviewed-by: Guillaume Nault <gnault@redhat.com>
diff mbox series

Patch

diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 18964394d6bd..b632c128ecb7 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -293,7 +293,7 @@  static int ip_tunnel_bind_dev(struct net_device *dev)
 
 		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
 				    iph->saddr, tunnel->parms.o_key,
-				    RT_TOS(iph->tos), dev_net(dev),
+				    iph->tos & INET_DSCP_MASK, dev_net(dev),
 				    tunnel->parms.link, tunnel->fwmark, 0, 0);
 		rt = ip_route_output_key(tunnel->net, &fl4);