| Message ID | 20240821125251.1571445-12-idosch@nvidia.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | b6791ac5ea49aec7f9ef123ebc728fa6a5f9090a |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Unmask upper DSCP bits - part 1 | expand |
On Wed, Aug 21, 2024 at 03:52:50PM +0300, Ido Schimmel wrote: > Unmask the upper DSCP bits when performing source validation for > multicast packets during early demux. In the future, this will allow us > to perform the FIB lookup which is performed as part of source > validation according to the full DSCP value. Reviewed-by: Guillaume Nault <gnault@redhat.com>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index ddb86baaea6c..8accbf4cb295 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -115,6 +115,7 @@ #include <net/addrconf.h> #include <net/udp_tunnel.h> #include <net/gro.h> +#include <net/inet_dscp.h> #if IS_ENABLED(CONFIG_IPV6) #include <net/ipv6_stubs.h> #endif @@ -2618,7 +2619,7 @@ int udp_v4_early_demux(struct sk_buff *skb) if (!inet_sk(sk)->inet_daddr && in_dev) return ip_mc_validate_source(skb, iph->daddr, iph->saddr, - iph->tos & IPTOS_RT_MASK, + iph->tos & INET_DSCP_MASK, skb->dev, in_dev, &itag); } return 0;
Unmask the upper DSCP bits when performing source validation for multicast packets during early demux. In the future, this will allow us to perform the FIB lookup which is performed as part of source validation according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by: Ido Schimmel <idosch@nvidia.com> --- net/ipv4/udp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)