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Date: Sun, 4 Jan 2015 12:56:51 -0800
From: David Decotigny <ddecotig@...il.com>
To: Amir Vadai <amirv@...lanox.com>,
Florian Fainelli <f.fainelli@...il.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-api@...r.kernel.org
Cc: David Decotigny <decot@...glers.com>,
"David S. Miller" <davem@...emloft.net>,
Jason Wang <jasowang@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
Al Viro <viro@...iv.linux.org.uk>,
Ben Hutchings <ben@...adent.org.uk>,
Masatake YAMATO <yamato@...hat.com>, Xi Wang <xii@...gle.com>,
Neil Horman <nhorman@...driver.com>,
WANG Cong <xiyou.wangcong@...il.com>,
Flavio Leitner <fbl@...hat.com>, Tom Gundersen <teg@...m.no>,
Jiri Pirko <jiri@...nulli.us>,
Vlad Yasevich <vyasevic@...hat.com>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
Saeed Mahameed <saeedm@...lanox.com>,
Venkata Duvvuru <VenkatKumar.Duvvuru@...lex.Com>,
Govindarajulu Varadarajan <_govind@....com>
Subject: [PATCH net-next v1 1/7] net: ethtool: extend link mode support to 48 bits
From: David Decotigny <decot@...glers.com>
Signed-off-by: David Decotigny <decot@...glers.com>
---
include/uapi/linux/ethtool.h | 130 ++++++++++++++++++++++++++++++++++++-------
1 file changed, 110 insertions(+), 20 deletions(-)
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 5f66d9c..61e7734 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -23,14 +23,16 @@
/**
* struct ethtool_cmd - link control and status
* @cmd: Command number = %ETHTOOL_GSET or %ETHTOOL_SSET
- * @supported: Bitmask of %SUPPORTED_* flags for the link modes,
- * physical connectors and other link features for which the
- * interface supports autonegotiation or auto-detection.
- * Read-only.
- * @advertising: Bitmask of %ADVERTISED_* flags for the link modes,
- * physical connectors and other link features that are
- * advertised through autonegotiation or enabled for
- * auto-detection.
+ * @supported: Low bits of bitmask of %SUPPORTED_* flags for the link
+ * modes, physical connectors and other link features for which
+ * the interface supports autonegotiation or auto-detection.
+ * Read-only. Please do not access this field directly, use the
+ * %ethtool_cmd_supported_* family of functions instead.
+ * @advertising: Low bits of bitmask of %ADVERTISED_* flags for the
+ * link modes, physical connectors and other link features that
+ * are advertised through autonegotiation or enabled for
+ * auto-detection. Please do not access this field directly, use
+ * the %ethtool_cmd_advertising_* family of functions instead.
* @speed: Low bits of the speed
* @duplex: Duplex mode; one of %DUPLEX_*
* @port: Physical connector type; one of %PORT_*
@@ -56,10 +58,22 @@
* yield %ETH_TP_MDI_INVALID and writes may be ignored or rejected.
* When written successfully, the link should be renegotiated if
* necessary.
- * @lp_advertising: Bitmask of %ADVERTISED_* flags for the link modes
- * and other link features that the link partner advertised
- * through autonegotiation; 0 if unknown or not applicable.
- * Read-only.
+ * @lp_advertising: Low bits of bitmask of %ADVERTISED_* flags for the
+ * link modes and other link features that the link partner
+ * advertised through autonegotiation; 0 if unknown or not
+ * applicable. Read-only. Please do not access this field
+ * directly, use the %ethtool_cmd_lp_advertising_* family of
+ * functions instead.
+ * @supported_hi: High bits of bitmask of %SUPPORTED_* flags. See
+ * %supported. Please do not access this field directly, use the
+ * %ethtool_cmd_supported_* family of functions instead.
+ * @advertising_hi: High bits of bitmask of %ADVERTISING_* flags. See
+ * %advertising. Please do not access this field directly, use
+ * the %ethtool_cmd_advertising_* family of functions instead.
+ * @lp_advertising_hi: High bits of bitmask of %ADVERTISING_* flags.
+ * See %lp_advertising. Please do not access this field directly,
+ * use the %ethtool_cmd_lp_advertising_* family of functions
+ * instead.
*
* The link speed in Mbps is split between @speed and @speed_hi. Use
* the ethtool_cmd_speed() and ethtool_cmd_speed_set() functions to
@@ -107,7 +121,10 @@ struct ethtool_cmd {
__u8 eth_tp_mdix;
__u8 eth_tp_mdix_ctrl;
__u32 lp_advertising;
- __u32 reserved[2];
+ __u16 supported_hi;
+ __u16 advertising_hi;
+ __u16 lp_advertising_hi;
+ __u16 reserved;
};
static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
@@ -123,6 +140,46 @@ static inline __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
return (ep->speed_hi << 16) | ep->speed;
}
+/**
+ * MAKE_ETHTOOL_LINK_MODE_ACCESSORS - create the link_mode accessors
+ * Macro to generate the %ethtool_cmd_supported_*,
+ * %ethtool_cmd_advertising_*, %ethtool_cmd_lp_advertising_*,
+ * %ethtool_eee_supported_*, %ethtool_eee_advertised_*,
+ * %ethtool_eee_lp_advertised_* families of functions.
+ *
+ * Macro args:
+ * @struct_name: either %ethtool_cmd or %ethtool_eee
+ * @field_name: name of the fields in %struct_name to
+ * access. supported/advertising/lp_advertising for ethtool_cmd,
+ * supported/advertised/lp_advertised for ethtool_eee
+ *
+ * Generates the following static functions:
+ * @ethtool_cmd_supported(const struct ethtool_cmd*): returns
+ * the 64b value of %supported fields (the upper bits 63..48 are 0)
+ * @ethtool_cmd_supported_set(struct ethtool_cmd*,
+ * ethtool_link_mode_mask_t value): set the %supported fields to
+ * given %value (only the lower 48 bits used, upper bits 63..48
+ * ignored)
+ *
+ * Same doc for all the other functions.
+ */
+#define MAKE_ETHTOOL_LINK_MODE_ACCESSORS(struct_name, field_name) \
+ static inline ethtool_link_mode_mask_t \
+ struct_name ## _ ## field_name(const struct struct_name *cmd) \
+ { ethtool_link_mode_mask_t r = cmd->field_name; \
+ r |= ((__u64)cmd->field_name ## _hi) << 32; return r; } \
+ static inline void \
+ struct_name ## _ ## field_name ## _set(struct struct_name *cmd, \
+ ethtool_link_mode_mask_t mask) \
+ { cmd->field_name = mask & 0xffffffff; \
+ cmd->field_name ## _hi = (mask >> 32) & 0xffff; }
+
+typedef __u64 ethtool_link_mode_mask_t;
+
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_cmd, supported);
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_cmd, advertising);
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_cmd, lp_advertising);
+
/* Device supports clause 22 register access to PHY or peripherals
* using the interface defined in <linux/mii.h>. This should not be
* set if there are known to be no such peripherals present or if
@@ -287,12 +344,18 @@ struct ethtool_eeprom {
/**
* struct ethtool_eee - Energy Efficient Ethernet information
* @cmd: ETHTOOL_{G,S}EEE
- * @supported: Mask of %SUPPORTED_* flags for the speed/duplex combinations
- * for which there is EEE support.
- * @advertised: Mask of %ADVERTISED_* flags for the speed/duplex combinations
- * advertised as eee capable.
- * @lp_advertised: Mask of %ADVERTISED_* flags for the speed/duplex
- * combinations advertised by the link partner as eee capable.
+ * @supported: Low bits of mask of %SUPPORTED_* flags for the
+ * speed/duplex combinations for which there is EEE
+ * support. Please do not access this field directly, use the
+ * %ethtool_eee_supported_* family of functions instead.
+ * @advertised: Low bits of mask of %ADVERTISED_* flags for the
+ * speed/duplex combinations advertised as eee capable. Please do
+ * not access this field directly, use the
+ * %ethtool_eee_advertised_* family of functions instead.
+ * @lp_advertised: Low bits of mask of %ADVERTISED_* flags for the
+ * speed/duplex combinations advertised by the link partner as
+ * eee capable. Please do not access this field directly, use
+ * the %ethtool_eee_lp_advertised_* family of functions instead.
* @eee_active: Result of the eee auto negotiation.
* @eee_enabled: EEE configured mode (enabled/disabled).
* @tx_lpi_enabled: Whether the interface should assert its tx lpi, given
@@ -300,6 +363,16 @@ struct ethtool_eeprom {
* @tx_lpi_timer: Time in microseconds the interface delays prior to asserting
* its tx lpi (after reaching 'idle' state). Effective only when eee
* was negotiated and tx_lpi_enabled was set.
+ * @supported_hi: High bits of mask of %SUPPORTED_* flags. See
+ * %supported. Please do not access this field directly, use the
+ * %ethtool_eee_supported_* family of functions instead.
+ * @advertised_hi: High bits of mask of %ADVERTISING_* flags. See
+ * %advertising. Please do not access this field directly, use
+ * the %ethtool_eee_advertising_* family of functions instead.
+ * @lp_advertised_hi: High bits of mask of %ADVERTISING_* flags.
+ * See %lp_advertising. Please do not access this field directly,
+ * use the %ethtool_eee_lp_advertising_* family of functions
+ * instead.
*/
struct ethtool_eee {
__u32 cmd;
@@ -310,9 +383,17 @@ struct ethtool_eee {
__u32 eee_enabled;
__u32 tx_lpi_enabled;
__u32 tx_lpi_timer;
- __u32 reserved[2];
+ __u16 supported_hi;
+ __u16 advertised_hi;
+ __u16 lp_advertised_hi;
+ __u16 reserved;
};
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_eee, supported);
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_eee, advertised);
+MAKE_ETHTOOL_LINK_MODE_ACCESSORS(ethtool_eee, lp_advertised);
+
+
/**
* struct ethtool_modinfo - plugin module eeprom information
* @cmd: %ETHTOOL_GMODULEINFO
@@ -1192,6 +1273,9 @@ enum ethtool_sfeatures_retval_bits {
#define SPARC_ETH_GSET ETHTOOL_GSET
#define SPARC_ETH_SSET ETHTOOL_SSET
+/* Do not use the following macros directly to update
+ * ethtool_cmd::supported, ethtool_eee::supported. Please use
+ * ethtool_(cmd|eee)_supported(|_set) instead */
#define SUPPORTED_10baseT_Half (1 << 0)
#define SUPPORTED_10baseT_Full (1 << 1)
#define SUPPORTED_100baseT_Half (1 << 2)
@@ -1223,7 +1307,12 @@ enum ethtool_sfeatures_retval_bits {
#define SUPPORTED_56000baseCR4_Full (1 << 28)
#define SUPPORTED_56000baseSR4_Full (1 << 29)
#define SUPPORTED_56000baseLR4_Full (1 << 30)
+/* TODO: for bit indices >= 31, make sure to shift 1ULL instead of 1 */
+/* Do not use the following macros directly to update
+ * ethtool_cmd::advertising, ethtool_cmd::lp_advertising,
+ * ethtool_eee::advertised, ethtool_eee::lp_advertised. Please use
+ * ethtool_(cmd|eee)_*(|_set) */
#define ADVERTISED_10baseT_Half (1 << 0)
#define ADVERTISED_10baseT_Full (1 << 1)
#define ADVERTISED_100baseT_Half (1 << 2)
@@ -1255,6 +1344,7 @@ enum ethtool_sfeatures_retval_bits {
#define ADVERTISED_56000baseCR4_Full (1 << 28)
#define ADVERTISED_56000baseSR4_Full (1 << 29)
#define ADVERTISED_56000baseLR4_Full (1 << 30)
+/* TODO: for bit indices >= 31, make sure to shift 1ULL instead of 1 */
/* The following are all involved in forcing a particular link
* mode for the device for setting things. When getting the
--
2.2.0.rc0.207.ga3a616c
--
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