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xfrm: Convert struct xfrm_dst_lookup_params -> tos to dscp_t.

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Add type annotation to the "tos" field of struct xfrm_dst_lookup_params,
to ensure that the ECN bits aren't mistakenly taken into account when
doing route lookups. Rename that field (tos -> dscp) to make that
change explicit.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Guillaume Nault 2024-10-31 16:52:57 +01:00 committed by Steffen Klassert
parent 3021a2a340
commit e57dfaa4b0
3 changed files with 5 additions and 3 deletions
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3
include/net/xfrm.h
View File

@ -19,6 +19,7 @@
#include <net/sock.h>
#include <net/dst.h>
#include <net/inet_dscp.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/ipv6.h>
@ -354,7 +355,7 @@ void xfrm_if_unregister_cb(void);
struct xfrm_dst_lookup_params {
struct net *net;
int tos;
dscp_t dscp;
int oif;
xfrm_address_t *saddr;
xfrm_address_t *daddr;

3
net/ipv4/xfrm4_policy.c
View File

@ -14,6 +14,7 @@
#include <linux/inetdevice.h>
#include <net/dst.h>
#include <net/xfrm.h>
#include <net/inet_dscp.h>
#include <net/ip.h>
#include <net/l3mdev.h>
@ -24,7 +25,7 @@ static struct dst_entry *__xfrm4_dst_lookup(struct flowi4 *fl4,
memset(fl4, 0, sizeof(*fl4));
fl4->daddr = params->daddr->a4;
fl4->flowi4_tos = params->tos;
fl4->flowi4_tos = inet_dscp_to_dsfield(params->dscp);
fl4->flowi4_l3mdev = l3mdev_master_ifindex_by_index(params->net,
params->oif);
fl4->flowi4_mark = params->mark;

2
net/xfrm/xfrm_policy.c
View File

@ -312,7 +312,7 @@ static inline struct dst_entry *xfrm_dst_lookup(struct xfrm_state *x,
params.net = net;
params.saddr = saddr;
params.daddr = daddr;
params.tos = inet_dscp_to_dsfield(dscp);
params.dscp = dscp;
params.oif = oif;
params.mark = mark;
params.ipproto = x->id.proto;