Commit ca4edd96 authored by Ido Schimmel's avatar Ido Schimmel Committed by Jakub Kicinski
Browse files

net: fib_rules: Add DSCP mask attribute 



Add an attribute that allows matching on DSCP with a mask. Matching on
DSCP with a mask is needed in deployments where users encode path
information into certain bits of the DSCP field.

Temporarily set the type of the attribute to 'NLA_REJECT' while support
is being added.

Reviewed-by: default avatarPetr Machata <petrm@nvidia.com>
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarGuillaume Nault <gnault@redhat.com>
Link: https://patch.msgid.link/20250220080525.831924-2-idosch@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e8770096

include/uapi/linux/fib_rules.h

+1 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ enum { 
	FRA_FLOWLABEL_MASK,	/* flowlabel mask */

	FRA_SPORT_MASK,	/* sport mask */

	FRA_DPORT_MASK,	/* dport mask */

	FRA_DSCP_MASK,	/* dscp mask */

	__FRA_MAX

};

net/core/fib_rules.c

+1 −0
Original line number Diff line number Diff line
@@ -845,6 +845,7 @@ static const struct nla_policy fib_rule_policy[FRA_MAX + 1] = { 
	[FRA_FLOWLABEL_MASK] = { .type = NLA_BE32 },

	[FRA_SPORT_MASK] = { .type = NLA_U16 },

	[FRA_DPORT_MASK] = { .type = NLA_U16 },

	[FRA_DSCP_MASK] = { .type = NLA_REJECT },

};



int fib_newrule(struct net *net, struct sk_buff *skb, struct nlmsghdr *nlh,