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devlink: Enhance policy to validate eswitch mode value 

Use range checking facility of nla_policy to validate eswitch mode input
attribute value is valid or not.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Parav Pandit 2020-09-21 19:41:29 +03:00 committed by David S. Miller
parent 3ab0a7a0c3
commit ba356c9098
1 changed files with 2 additions and 1 deletions
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3
net/core/devlink.c
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@ -7064,7 +7064,8 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
[DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
[DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
[DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
[DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
DEVLINK_ESWITCH_MODE_SWITCHDEV),
[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },