[Intel-wired-lan] [PATCH net-next v4 10/12] ethtool: Add support for Frame Preemption verification

[Vinicius Costa Gomes]

WIP WIP WIP

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes at intel.com>
---
 Documentation/networking/ethtool-netlink.rst |  3 +++
 include/linux/ethtool.h                      |  2 ++
 include/uapi/linux/ethtool_netlink.h         |  2 ++
 net/ethtool/netlink.h                        |  2 +-
 net/ethtool/preempt.c                        | 11 +++++++++++
 5 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index a87f1716944e..bc44724e2cd5 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1494,6 +1494,8 @@ Request contents:
   ``ETHTOOL_A_PREEMPT_HEADER``           nested  reply header
   ``ETHTOOL_A_PREEMPT_ENABLED``          u8      frame preemption enabled
   ``ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE``    u32     Min additional frag size
+  ``ETHTOOL_A_PREEMPT_DISABLE_VERIFY``   u8      disable verification
+  ``ETHTOOL_A_PREEMPT_VERIFIED``         u8      verification procedure
   =====================================  ======  ==========================
 
 ``ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE`` configures the minimum non-final
@@ -1510,6 +1512,7 @@ Request contents:
   ``ETHTOOL_A_CHANNELS_HEADER``          nested  reply header
   ``ETHTOOL_A_PREEMPT_ENABLED``          u8      frame preemption enabled
   ``ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE``    u32     Min additional frag size
+  ``ETHTOOL_A_PREEMPT_DISABLE_VERIFY``   u8      disable verification
   =====================================  ======  ==========================
 
 ``ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE`` configures the minimum non-final
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 7e449be8f335..64c31ab75e16 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -420,6 +420,8 @@ struct ethtool_module_eeprom {
 struct ethtool_fp {
 	u8 enabled;
 	u32 add_frag_size;
+	u8 disable_verify;
+	u8 verified;
 };
 
 /**
diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h
index 4600aba1c693..c2b4d7c3ed14 100644
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -675,6 +675,8 @@ enum {
 	ETHTOOL_A_PREEMPT_HEADER,			/* nest - _A_HEADER_* */
 	ETHTOOL_A_PREEMPT_ENABLED,			/* u8 */
 	ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE,		/* u32 */
+	ETHTOOL_A_PREEMPT_DISABLE_VERIFY,		/* u8 */
+	ETHTOOL_A_PREEMPT_VERIFIED,			/* u8 */
 
 	/* add new constants above here */
 	__ETHTOOL_A_PREEMPT_CNT,
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index cc90a463a81c..671237d31ced 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -383,7 +383,7 @@ extern const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1];
 extern const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1];
 extern const struct nla_policy ethnl_module_eeprom_get_policy[ETHTOOL_A_MODULE_EEPROM_I2C_ADDRESS + 1];
 extern const struct nla_policy ethnl_preempt_get_policy[ETHTOOL_A_PREEMPT_HEADER + 1];
-extern const struct nla_policy ethnl_preempt_set_policy[ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE + 1];
+extern const struct nla_policy ethnl_preempt_set_policy[ETHTOOL_A_PREEMPT_VERIFIED + 1];
 extern const struct nla_policy ethnl_stats_get_policy[ETHTOOL_A_STATS_GROUPS + 1];
 
 int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info);
diff --git a/net/ethtool/preempt.c b/net/ethtool/preempt.c
index 4f96d3c2b1d5..5d70374d9b01 100644
--- a/net/ethtool/preempt.c
+++ b/net/ethtool/preempt.c
@@ -48,6 +48,8 @@ static int preempt_reply_size(const struct ethnl_req_info *req_base,
 
 	len += nla_total_size(sizeof(u8)); /* _PREEMPT_ENABLED */
 	len += nla_total_size(sizeof(u32)); /* _PREEMPT_ADD_FRAG_SIZE */
+	len += nla_total_size(sizeof(u8)); /* _PREEMPT_DISABLE_VERIFY */
+	len += nla_total_size(sizeof(u8)); /* _PREEMPT_VERIFIED */
 
 	return len;
 }
@@ -66,6 +68,12 @@ static int preempt_fill_reply(struct sk_buff *skb,
 			preempt->add_frag_size))
 		return -EMSGSIZE;
 
+	if (nla_put_u8(skb, ETHTOOL_A_PREEMPT_DISABLE_VERIFY, preempt->disable_verify))
+		return -EMSGSIZE;
+
+	if (nla_put_u8(skb, ETHTOOL_A_PREEMPT_VERIFIED, preempt->verified))
+		return -EMSGSIZE;
+
 	return 0;
 }
 
@@ -86,6 +94,7 @@ ethnl_preempt_set_policy[ETHTOOL_A_PREEMPT_MAX + 1] = {
 	[ETHTOOL_A_PREEMPT_HEADER]			= NLA_POLICY_NESTED(ethnl_header_policy),
 	[ETHTOOL_A_PREEMPT_ENABLED]			= NLA_POLICY_RANGE(NLA_U8, 0, 1),
 	[ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE]		= { .type = NLA_U32 },
+	[ETHTOOL_A_PREEMPT_DISABLE_VERIFY]		= NLA_POLICY_RANGE(NLA_U8, 0, 1),
 };
 
 int ethnl_set_preempt(struct sk_buff *skb, struct genl_info *info)
@@ -124,6 +133,8 @@ int ethnl_set_preempt(struct sk_buff *skb, struct genl_info *info)
 			tb[ETHTOOL_A_PREEMPT_ENABLED], &mod);
 	ethnl_update_u32(&preempt.add_frag_size,
 			 tb[ETHTOOL_A_PREEMPT_ADD_FRAG_SIZE], &mod);
+	ethnl_update_u8(&preempt.disable_verify,
+			tb[ETHTOOL_A_PREEMPT_DISABLE_VERIFY], &mod);
 	ret = 0;
 	if (!mod)
 		goto out_ops;
-- 
2.32.0