netdev - [PATCH net-next v5 04/10] devlink: Adding max PF MSI-X vectors perm config param

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Date:   Mon, 30 Oct 2017 10:46:10 -0400
From:   Steve Lin <steven.lin1@...adcom.com>
To:     netdev@...r.kernel.org
Cc:     jiri@...lanox.com, davem@...emloft.net, michael.chan@...adcom.com,
        linville@...driver.com, gospo@...adcom.com, yuvalm@...lanox.com,
        steven.lin1@...adcom.com
Subject: [PATCH net-next v5 04/10] devlink: Adding max PF MSI-X vectors perm config param

Adding DEVLINK_PERM_CONFIG_MAX_NUM_PF_MSIX_VECT permanent config
parameter. Value is permanent, so becomes the new default value
for this device.

Value sets the maximum number of PF MSI-X vectors.

Signed-off-by: Steve Lin <steven.lin1@...adcom.com>
Acked-by: Andy Gospodarek <gospo@...adcom.com>
---
 include/uapi/linux/devlink.h | 4 ++++
 net/core/devlink.c           | 1 +
 2 files changed, 5 insertions(+)

diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 4e0b8b7..6936c0e 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -273,10 +273,14 @@ enum devlink_perm_config_enabled {
  * DEVLINK_PERM_CONFIG_NUM_VF_PER_PF: Configures the number of total/maximum
  * VFs per PF available on device.
  *   Value: # of VFs per PF in SR-IOV mode
+ * DEVLINK_PERM_CONFIG_NUM_PF_MSIX_VECT: Configures the # of MSI-X vectors
+ * advertised via PCI capability for this device.
+ *   Value = Max # of MSI-X vectors per PF
  */
 enum devlink_perm_config_param {
 	DEVLINK_PERM_CONFIG_SRIOV_ENABLED,
 	DEVLINK_PERM_CONFIG_NUM_VF_PER_PF,
+	DEVLINK_PERM_CONFIG_NUM_PF_MSIX_VECT,
 
 	__DEVLINK_PERM_CONFIG_MAX,
 	DEVLINK_PERM_CONFIG_MAX = __DEVLINK_PERM_CONFIG_MAX - 1
diff --git a/net/core/devlink.c b/net/core/devlink.c
index f421cfb..78bb949 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1571,6 +1571,7 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1];
 static const u8 devlink_perm_cfg_param_types[DEVLINK_PERM_CONFIG_MAX + 1] = {
 	[DEVLINK_PERM_CONFIG_SRIOV_ENABLED] = NLA_U8,
 	[DEVLINK_PERM_CONFIG_NUM_VF_PER_PF] = NLA_U32,
+	[DEVLINK_PERM_CONFIG_NUM_PF_MSIX_VECT] = NLA_U32,
 };
 
 static int devlink_nl_single_param_get(struct sk_buff *msg,
-- 
2.7.4