diff options
| author | Asbjørn Sloth Tønnesen <ast@fiberby.net> | 2024-07-13 02:19:02 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-07-15 09:14:38 -0700 |
| commit | 0e83a7875d691f5b76c87d9223b22e5a0d34511e (patch) | |
| tree | 5e1963607a5b86c062408cd999c5420f501ee200 | |
| parent | fcb4bb07a9276bfb63c82ce5e8c4f8ff23646635 (diff) | |
net/sched: cls_flower: add policy for TCA_FLOWER_KEY_FLAGS
This policy guards fl_set_key_flags() from seeing flags
not used in the context of TCA_FLOWER_KEY_FLAGS.
In order For the policy check to be performed with the
correct endianness, then we also needs to change the
attribute type to NLA_BE32 (Thanks Davide).
TCA_FLOWER_KEY_FLAGS{,_MASK} already has a be32 comment
in include/uapi/linux/pkt_cls.h.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Tested-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Link: https://patch.msgid.link/20240713021911.1631517-6-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/sched/cls_flower.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 6a5cecfd9561..fc9a9a0b4897 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -41,6 +41,10 @@ #define TCA_FLOWER_KEY_CT_FLAGS_MASK \ (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) +#define TCA_FLOWER_KEY_FLAGS_POLICY_MASK \ + (TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT | \ + TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST) + #define TUNNEL_FLAGS_PRESENT (\ _BITUL(IP_TUNNEL_CSUM_BIT) | \ _BITUL(IP_TUNNEL_DONT_FRAGMENT_BIT) | \ @@ -676,8 +680,10 @@ static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = { [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 }, - [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 }, - [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 }, + [TCA_FLOWER_KEY_FLAGS] = NLA_POLICY_MASK(NLA_BE32, + TCA_FLOWER_KEY_FLAGS_POLICY_MASK), + [TCA_FLOWER_KEY_FLAGS_MASK] = NLA_POLICY_MASK(NLA_BE32, + TCA_FLOWER_KEY_FLAGS_POLICY_MASK), [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 }, |