@@ -177,6 +177,7 @@ static inline u32 ethtool_rxfh_indir_def
* @get_module_eeprom: Get the eeprom information from the plug-in module
* @get_eee: Get Energy-Efficient (EEE) supported and status.
* @set_eee: Set EEE status (enable/disable) as well as LPI timers.
+ * @get_switch_port_attrs: Get adjacent switch port attributes.
*
* All operations are optional (i.e. the function pointer may be set
* to %NULL) and callers must take this into account. Callers must
@@ -245,6 +246,8 @@ struct ethtool_ops {
struct ethtool_eeprom *, u8 *);
int (*get_eee)(struct net_device *, struct ethtool_eee *);
int (*set_eee)(struct net_device *, struct ethtool_eee *);
+ int (*get_switch_port_attrs)(struct net_device *,
+ struct ethtool_swport_attrs *);
};
@@ -136,6 +136,22 @@ struct ethtool_eeprom {
};
/**
+ * struct ethtool_swport_attrs - query adjacent switch port attributes
+ * @cmd: ETHTOOL_GPORT
+ * @port_rc: Use GPORT_RC_* as appropriate.
+ * @supported: Forwarding modes and capabilities supported by the switch port,
+ * see SUPPORTED_SP_* flags.
+ * @enabled: Forwarding modes and capabilities currently activated at the
+ * adjacent switch port, see ENABLED_SP_* flags.
+ */
+struct ethtool_swport_attrs {
+ __u32 cmd;
+ __u32 port_rc;
+ __u32 supported;
+ __u32 enabled;
+};
+
+/**
* struct ethtool_eee - Energy Efficient Ethernet information
* @cmd: ETHTOOL_{G,S}EEE
* @supported: Mask of %SUPPORTED_* flags for the speed/duplex combinations
@@ -900,6 +916,7 @@ enum ethtool_sfeatures_retval_bits {
#define ETHTOOL_GMODULEEEPROM 0x00000043 /* Get plug-in module eeprom */
#define ETHTOOL_GEEE 0x00000044 /* Get EEE settings */
#define ETHTOOL_SEEE 0x00000045 /* Set EEE settings */
+#define ETHTOOL_GPORT 0x00000046 /* Get switch port attributes */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
@@ -1067,6 +1084,24 @@ enum ethtool_sfeatures_retval_bits {
#define ETH_MODULE_SFF_8472 0x2
#define ETH_MODULE_SFF_8472_LEN 512
+/* Bad return codes for switch ports */
+#define GPORT_RC_LLDP_UNSUP 1 /* switch port doesn't support */
+ /* required LLDP EVB TLV */
+
+/* Indicates what features the adjacent switch port supports. */
+#define SUPPORTED_SP_FWD_802_1 (1 << 0)
+#define SUPPORTED_SP_FWD_RR (1 << 1)
+#define SUPPORTED_SP_CAP_RTE (1 << 9)
+#define SUPPORTED_SP_CAP_ECP (1 << 10)
+#define SUPPORTED_SP_CAP_VDP (1 << 11)
+
+/* Indicates what features the adjacent switch port has enabled. */
+#define ENABLED_SP_FWD_802_1 (1 << 0)
+#define ENABLED_SP_FWD_RR (1 << 1)
+#define ENABLED_SP_CAP_RTE (1 << 9)
+#define ENABLED_SP_CAP_ECP (1 << 10)
+#define ENABLED_SP_CAP_VDP (1 << 11)
+
/* Reset flags */
/* The reset() operation must clear the flags for the components which
* were actually reset. On successful return, the flags indicate the
@@ -1446,6 +1446,25 @@ static int ethtool_get_module_eeprom(str
modinfo.eeprom_len);
}
+static int ethtool_get_switch_port_attrs(struct net_device *dev,
+ void __user *useraddr)
+{
+ struct ethtool_swport_attrs attrs = { ETHTOOL_GPORT };
+ int rc;
+
+ if (!dev->ethtool_ops->get_switch_port_attrs)
+ return -EOPNOTSUPP;
+
+ rc = dev->ethtool_ops->get_switch_port_attrs(dev, &attrs);
+ if (rc)
+ return rc;
+
+ if (copy_to_user(useraddr, &attrs, sizeof(attrs)))
+ return -EFAULT;
+
+ return 0;
+}
+
/* The main entry point in this file. Called from net/core/dev_ioctl.c */
int dev_ethtool(struct net *net, struct ifreq *ifr)
@@ -1675,6 +1694,9 @@ int dev_ethtool(struct net *net, struct
case ETHTOOL_GMODULEEEPROM:
rc = ethtool_get_module_eeprom(dev, useraddr);
break;
+ case ETHTOOL_GPORT:
+ rc = ethtool_get_switch_port_attrs(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}
Switches supporting LLDP can communicate port attributes to connected devices. Device drivers capable of accessing this information from the devices can use the new callback get_switch_port_attrs() to report supported and enabled settings in the card's adjacent switch port for display in ethtool. Implementors have to use the respective SUPPORTED_SP_* and ENABLED_SP_* defines to indicate the current settings. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> --- include/linux/ethtool.h | 3 +++ include/uapi/linux/ethtool.h | 35 +++++++++++++++++++++++++++++++++++ net/core/ethtool.c | 22 ++++++++++++++++++++++ 3 files changed, 60 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html