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net: ethtool: add new ETHTOOL_xLINKSETTINGS API
This patch defines a new ETHTOOL_GLINKSETTINGS/SLINKSETTINGS API,
handled by the new get_link_ksettings/set_link_ksettings callbacks.
This API provides support for most legacy ethtool_cmd fields, adds
support for larger link mode masks (up to 4064 bits, variable length),
and removes ethtool_cmd deprecated
fields (transceiver/maxrxpkt/maxtxpkt).
This API is deprecating the legacy ETHTOOL_GSET/SSET API and provides
the following backward compatibility properties:
- legacy ethtool with legacy drivers: no change, still using the
get_settings/set_settings callbacks.
- legacy ethtool with new get/set_link_ksettings drivers: the new
driver callbacks are used, data internally converted to legacy
ethtool_cmd. ETHTOOL_GSET will return only the 1st 32b of each link
mode mask. ETHTOOL_SSET will fail if user tries to set the
ethtool_cmd deprecated fields to
non-0 (transceiver/maxrxpkt/maxtxpkt). A kernel warning is logged if
driver sets higher bits.
- future ethtool with legacy drivers: no change, still using the
get_settings/set_settings callbacks, internally converted to new data
structure. Deprecated fields (transceiver/maxrxpkt/maxtxpkt) will be
ignored and seen as 0 from user space. Note that that "future"
ethtool tool will not allow changes to these deprecated fields.
- future ethtool with new drivers: direct call to the new callbacks.
By "future" ethtool, what is meant is:
- query: first try ETHTOOL_GLINKSETTINGS, and revert to ETHTOOL_GSET if
fails
- set: query first and remember which of ETHTOOL_GLINKSETTINGS or
ETHTOOL_GSET was successful
+ if ETHTOOL_GLINKSETTINGS was successful, then change config with
ETHTOOL_SLINKSETTINGS. A failure there is final (do not try
ETHTOOL_SSET).
+ otherwise ETHTOOL_GSET was successful, change config with
ETHTOOL_SSET. A failure there is final (do not try
ETHTOOL_SLINKSETTINGS).
The interaction user/kernel via the new API requires a small
ETHTOOL_GLINKSETTINGS handshake first to agree on the length of the link
mode bitmaps. If kernel doesn't agree with user, it returns the bitmap
length it is expecting from user as a negative length (and cmd field is
0). When kernel and user agree, kernel returns valid info in all
fields (ie. link mode length > 0 and cmd is ETHTOOL_GLINKSETTINGS).
Data structure crossing user/kernel boundary is 32/64-bit
agnostic. Converted internally to a legal kernel bitmap.
The internal __ethtool_get_settings kernel helper will gradually be
replaced by __ethtool_get_link_ksettings by the time the first
"link_settings" drivers start to appear. So this patch doesn't change
it, it will be removed before it needs to be changed.
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Decotigny
David S. Miller
parent
48133335d7
commit
3f1ac7a700
@ -12,6 +12,7 @@
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#ifndef _LINUX_ETHTOOL_H
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#define _LINUX_ETHTOOL_H
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#include <linux/bitmap.h>
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#include <linux/compat.h>
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#include <uapi/linux/ethtool.h>
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@ -40,9 +41,6 @@ struct compat_ethtool_rxnfc {
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#include <linux/rculist.h>
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extern int __ethtool_get_settings(struct net_device *dev,
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struct ethtool_cmd *cmd);
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/**
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* enum ethtool_phys_id_state - indicator state for physical identification
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* @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
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@ -97,13 +95,74 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
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return index % n_rx_rings;
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}
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/* number of link mode bits/ulongs handled internally by kernel */
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#define __ETHTOOL_LINK_MODE_MASK_NBITS \
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(__ETHTOOL_LINK_MODE_LAST + 1)
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/* declare a link mode bitmap */
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#define __ETHTOOL_DECLARE_LINK_MODE_MASK(name) \
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DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
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/* drivers must ignore base.cmd and base.link_mode_masks_nwords
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* fields, but they are allowed to overwrite them (will be ignored).
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*/
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struct ethtool_link_ksettings {
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struct ethtool_link_settings base;
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struct {
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__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
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__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
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__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
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} link_modes;
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};
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/**
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* ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
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* @ptr : pointer to struct ethtool_link_ksettings
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* @name : one of supported/advertising/lp_advertising
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*/
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#define ethtool_link_ksettings_zero_link_mode(ptr, name) \
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bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
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/**
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* ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
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* link mode mask
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* @ptr : pointer to struct ethtool_link_ksettings
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* @name : one of supported/advertising/lp_advertising
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* @mode : one of the ETHTOOL_LINK_MODE_*_BIT
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* (not atomic, no bound checking)
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*/
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#define ethtool_link_ksettings_add_link_mode(ptr, name, mode) \
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__set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
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/**
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* ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
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* @ptr : pointer to struct ethtool_link_ksettings
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* @name : one of supported/advertising/lp_advertising
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* @mode : one of the ETHTOOL_LINK_MODE_*_BIT
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* (not atomic, no bound checking)
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*
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* Returns true/false.
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*/
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#define ethtool_link_ksettings_test_link_mode(ptr, name, mode) \
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test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
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extern int
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__ethtool_get_link_ksettings(struct net_device *dev,
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struct ethtool_link_ksettings *link_ksettings);
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/* DEPRECATED, use __ethtool_get_link_ksettings */
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extern int __ethtool_get_settings(struct net_device *dev,
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struct ethtool_cmd *cmd);
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/**
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* struct ethtool_ops - optional netdev operations
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* @get_settings: Get various device settings including Ethernet link
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* @get_settings: DEPRECATED, use %get_link_ksettings/%set_link_ksettings
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* API. Get various device settings including Ethernet link
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* settings. The @cmd parameter is expected to have been cleared
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* before get_settings is called. Returns a negative error code or
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* zero.
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* @set_settings: Set various device settings including Ethernet link
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* before get_settings is called. Returns a negative error code
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* or zero.
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* @set_settings: DEPRECATED, use %get_link_ksettings/%set_link_ksettings
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* API. Set various device settings including Ethernet link
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* settings. Returns a negative error code or zero.
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* @get_drvinfo: Report driver/device information. Should only set the
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* @driver, @version, @fw_version and @bus_info fields. If not
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@ -211,6 +270,19 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
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* a TX queue has this number, return -EINVAL. If only a RX queue or a TX
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* queue has this number, ignore the inapplicable fields.
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* Returns a negative error code or zero.
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* @get_link_ksettings: When defined, takes precedence over the
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* %get_settings method. Get various device settings
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* including Ethernet link settings. The %cmd and
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* %link_mode_masks_nwords fields should be ignored (use
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* %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter), any
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* change to them will be overwritten by kernel. Returns a
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* negative error code or zero.
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* @set_link_ksettings: When defined, takes precedence over the
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* %set_settings method. Set various device settings including
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* Ethernet link settings. The %cmd and %link_mode_masks_nwords
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* fields should be ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS
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* instead of the latter), any change to them will be overwritten
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* by kernel. Returns a negative error code or zero.
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*
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* All operations are optional (i.e. the function pointer may be set
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* to %NULL) and callers must take this into account. Callers must
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@ -293,6 +365,9 @@ struct ethtool_ops {
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struct ethtool_coalesce *);
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int (*set_per_queue_coalesce)(struct net_device *, u32,
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struct ethtool_coalesce *);
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int (*get_link_ksettings)(struct net_device *,
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struct ethtool_link_ksettings *);
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int (*set_link_ksettings)(struct net_device *,
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const struct ethtool_link_ksettings *);
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};
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#endif /* _LINUX_ETHTOOL_H */
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@ -21,7 +21,8 @@
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*/
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/**
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* struct ethtool_cmd - link control and status
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* struct ethtool_cmd - DEPRECATED, link control and status
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* This structure is DEPRECATED, please use struct ethtool_link_settings.
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* @cmd: Command number = %ETHTOOL_GSET or %ETHTOOL_SSET
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* @supported: Bitmask of %SUPPORTED_* flags for the link modes,
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* physical connectors and other link features for which the
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@ -1219,8 +1220,12 @@ struct ethtool_per_queue_op {
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};
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/* CMDs currently supported */
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#define ETHTOOL_GSET 0x00000001 /* Get settings. */
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#define ETHTOOL_SSET 0x00000002 /* Set settings. */
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#define ETHTOOL_GSET 0x00000001 /* DEPRECATED, Get settings.
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* Please use ETHTOOL_GLINKSETTINGS
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*/
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#define ETHTOOL_SSET 0x00000002 /* DEPRECATED, Set settings.
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* Please use ETHTOOL_SLINKSETTINGS
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*/
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#define ETHTOOL_GDRVINFO 0x00000003 /* Get driver info. */
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#define ETHTOOL_GREGS 0x00000004 /* Get NIC registers. */
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#define ETHTOOL_GWOL 0x00000005 /* Get wake-on-lan options. */
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@ -1302,73 +1307,139 @@ struct ethtool_per_queue_op {
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#define ETHTOOL_PERQUEUE 0x0000004b /* Set per queue options */
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#define ETHTOOL_GLINKSETTINGS 0x0000004c /* Get ethtool_link_settings */
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#define ETHTOOL_SLINKSETTINGS 0x0000004d /* Set ethtool_link_settings */
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/* compatibility with older code */
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#define SPARC_ETH_GSET ETHTOOL_GSET
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#define SPARC_ETH_SSET ETHTOOL_SSET
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#define SUPPORTED_10baseT_Half (1 << 0)
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#define SUPPORTED_10baseT_Full (1 << 1)
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#define SUPPORTED_100baseT_Half (1 << 2)
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#define SUPPORTED_100baseT_Full (1 << 3)
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#define SUPPORTED_1000baseT_Half (1 << 4)
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#define SUPPORTED_1000baseT_Full (1 << 5)
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#define SUPPORTED_Autoneg (1 << 6)
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#define SUPPORTED_TP (1 << 7)
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#define SUPPORTED_AUI (1 << 8)
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#define SUPPORTED_MII (1 << 9)
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#define SUPPORTED_FIBRE (1 << 10)
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#define SUPPORTED_BNC (1 << 11)
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#define SUPPORTED_10000baseT_Full (1 << 12)
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#define SUPPORTED_Pause (1 << 13)
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#define SUPPORTED_Asym_Pause (1 << 14)
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#define SUPPORTED_2500baseX_Full (1 << 15)
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#define SUPPORTED_Backplane (1 << 16)
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#define SUPPORTED_1000baseKX_Full (1 << 17)
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#define SUPPORTED_10000baseKX4_Full (1 << 18)
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#define SUPPORTED_10000baseKR_Full (1 << 19)
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#define SUPPORTED_10000baseR_FEC (1 << 20)
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#define SUPPORTED_20000baseMLD2_Full (1 << 21)
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#define SUPPORTED_20000baseKR2_Full (1 << 22)
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#define SUPPORTED_40000baseKR4_Full (1 << 23)
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#define SUPPORTED_40000baseCR4_Full (1 << 24)
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#define SUPPORTED_40000baseSR4_Full (1 << 25)
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#define SUPPORTED_40000baseLR4_Full (1 << 26)
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#define SUPPORTED_56000baseKR4_Full (1 << 27)
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#define SUPPORTED_56000baseCR4_Full (1 << 28)
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#define SUPPORTED_56000baseSR4_Full (1 << 29)
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#define SUPPORTED_56000baseLR4_Full (1 << 30)
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/* Link mode bit indices */
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enum ethtool_link_mode_bit_indices {
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ETHTOOL_LINK_MODE_10baseT_Half_BIT = 0,
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ETHTOOL_LINK_MODE_10baseT_Full_BIT = 1,
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ETHTOOL_LINK_MODE_100baseT_Half_BIT = 2,
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ETHTOOL_LINK_MODE_100baseT_Full_BIT = 3,
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ETHTOOL_LINK_MODE_1000baseT_Half_BIT = 4,
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ETHTOOL_LINK_MODE_1000baseT_Full_BIT = 5,
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ETHTOOL_LINK_MODE_Autoneg_BIT = 6,
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ETHTOOL_LINK_MODE_TP_BIT = 7,
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ETHTOOL_LINK_MODE_AUI_BIT = 8,
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ETHTOOL_LINK_MODE_MII_BIT = 9,
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ETHTOOL_LINK_MODE_FIBRE_BIT = 10,
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ETHTOOL_LINK_MODE_BNC_BIT = 11,
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ETHTOOL_LINK_MODE_10000baseT_Full_BIT = 12,
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ETHTOOL_LINK_MODE_Pause_BIT = 13,
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ETHTOOL_LINK_MODE_Asym_Pause_BIT = 14,
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ETHTOOL_LINK_MODE_2500baseX_Full_BIT = 15,
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ETHTOOL_LINK_MODE_Backplane_BIT = 16,
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ETHTOOL_LINK_MODE_1000baseKX_Full_BIT = 17,
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ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT = 18,
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ETHTOOL_LINK_MODE_10000baseKR_Full_BIT = 19,
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ETHTOOL_LINK_MODE_10000baseR_FEC_BIT = 20,
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ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT = 21,
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ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT = 22,
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ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT = 23,
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ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT = 24,
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ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT = 25,
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ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT = 26,
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ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT = 27,
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ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT = 28,
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ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT = 29,
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ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT = 30,
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#define ADVERTISED_10baseT_Half (1 << 0)
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#define ADVERTISED_10baseT_Full (1 << 1)
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#define ADVERTISED_100baseT_Half (1 << 2)
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#define ADVERTISED_100baseT_Full (1 << 3)
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#define ADVERTISED_1000baseT_Half (1 << 4)
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#define ADVERTISED_1000baseT_Full (1 << 5)
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#define ADVERTISED_Autoneg (1 << 6)
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#define ADVERTISED_TP (1 << 7)
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#define ADVERTISED_AUI (1 << 8)
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#define ADVERTISED_MII (1 << 9)
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#define ADVERTISED_FIBRE (1 << 10)
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#define ADVERTISED_BNC (1 << 11)
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#define ADVERTISED_10000baseT_Full (1 << 12)
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#define ADVERTISED_Pause (1 << 13)
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#define ADVERTISED_Asym_Pause (1 << 14)
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#define ADVERTISED_2500baseX_Full (1 << 15)
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#define ADVERTISED_Backplane (1 << 16)
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#define ADVERTISED_1000baseKX_Full (1 << 17)
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#define ADVERTISED_10000baseKX4_Full (1 << 18)
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#define ADVERTISED_10000baseKR_Full (1 << 19)
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#define ADVERTISED_10000baseR_FEC (1 << 20)
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#define ADVERTISED_20000baseMLD2_Full (1 << 21)
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#define ADVERTISED_20000baseKR2_Full (1 << 22)
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#define ADVERTISED_40000baseKR4_Full (1 << 23)
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#define ADVERTISED_40000baseCR4_Full (1 << 24)
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#define ADVERTISED_40000baseSR4_Full (1 << 25)
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#define ADVERTISED_40000baseLR4_Full (1 << 26)
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#define ADVERTISED_56000baseKR4_Full (1 << 27)
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#define ADVERTISED_56000baseCR4_Full (1 << 28)
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#define ADVERTISED_56000baseSR4_Full (1 << 29)
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#define ADVERTISED_56000baseLR4_Full (1 << 30)
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/* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
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* 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
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* macro for bits > 31. The only way to use indices > 31 is to
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* use the new ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API.
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*/
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__ETHTOOL_LINK_MODE_LAST
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= ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
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};
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#define __ETHTOOL_LINK_MODE_LEGACY_MASK(base_name) \
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(1UL << (ETHTOOL_LINK_MODE_ ## base_name ## _BIT))
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/* DEPRECATED macros. Please migrate to
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* ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API. Please do NOT
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* define any new SUPPORTED_* macro for bits > 31.
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*/
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#define SUPPORTED_10baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Half)
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#define SUPPORTED_10baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Full)
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#define SUPPORTED_100baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Half)
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#define SUPPORTED_100baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Full)
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#define SUPPORTED_1000baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Half)
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#define SUPPORTED_1000baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Full)
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#define SUPPORTED_Autoneg __ETHTOOL_LINK_MODE_LEGACY_MASK(Autoneg)
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#define SUPPORTED_TP __ETHTOOL_LINK_MODE_LEGACY_MASK(TP)
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#define SUPPORTED_AUI __ETHTOOL_LINK_MODE_LEGACY_MASK(AUI)
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#define SUPPORTED_MII __ETHTOOL_LINK_MODE_LEGACY_MASK(MII)
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#define SUPPORTED_FIBRE __ETHTOOL_LINK_MODE_LEGACY_MASK(FIBRE)
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#define SUPPORTED_BNC __ETHTOOL_LINK_MODE_LEGACY_MASK(BNC)
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#define SUPPORTED_10000baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseT_Full)
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#define SUPPORTED_Pause __ETHTOOL_LINK_MODE_LEGACY_MASK(Pause)
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#define SUPPORTED_Asym_Pause __ETHTOOL_LINK_MODE_LEGACY_MASK(Asym_Pause)
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#define SUPPORTED_2500baseX_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(2500baseX_Full)
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#define SUPPORTED_Backplane __ETHTOOL_LINK_MODE_LEGACY_MASK(Backplane)
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#define SUPPORTED_1000baseKX_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseKX_Full)
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#define SUPPORTED_10000baseKX4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKX4_Full)
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#define SUPPORTED_10000baseKR_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKR_Full)
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#define SUPPORTED_10000baseR_FEC __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseR_FEC)
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#define SUPPORTED_20000baseMLD2_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseMLD2_Full)
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#define SUPPORTED_20000baseKR2_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseKR2_Full)
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#define SUPPORTED_40000baseKR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseKR4_Full)
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#define SUPPORTED_40000baseCR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseCR4_Full)
|
||||
#define SUPPORTED_40000baseSR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseSR4_Full)
|
||||
#define SUPPORTED_40000baseLR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseLR4_Full)
|
||||
#define SUPPORTED_56000baseKR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseKR4_Full)
|
||||
#define SUPPORTED_56000baseCR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseCR4_Full)
|
||||
#define SUPPORTED_56000baseSR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseSR4_Full)
|
||||
#define SUPPORTED_56000baseLR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseLR4_Full)
|
||||
/* Please do not define any new SUPPORTED_* macro for bits > 31, see
|
||||
* notice above.
|
||||
*/
|
||||
|
||||
/*
|
||||
* DEPRECATED macros. Please migrate to
|
||||
* ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API. Please do NOT
|
||||
* define any new ADERTISE_* macro for bits > 31.
|
||||
*/
|
||||
#define ADVERTISED_10baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Half)
|
||||
#define ADVERTISED_10baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10baseT_Full)
|
||||
#define ADVERTISED_100baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Half)
|
||||
#define ADVERTISED_100baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(100baseT_Full)
|
||||
#define ADVERTISED_1000baseT_Half __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Half)
|
||||
#define ADVERTISED_1000baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseT_Full)
|
||||
#define ADVERTISED_Autoneg __ETHTOOL_LINK_MODE_LEGACY_MASK(Autoneg)
|
||||
#define ADVERTISED_TP __ETHTOOL_LINK_MODE_LEGACY_MASK(TP)
|
||||
#define ADVERTISED_AUI __ETHTOOL_LINK_MODE_LEGACY_MASK(AUI)
|
||||
#define ADVERTISED_MII __ETHTOOL_LINK_MODE_LEGACY_MASK(MII)
|
||||
#define ADVERTISED_FIBRE __ETHTOOL_LINK_MODE_LEGACY_MASK(FIBRE)
|
||||
#define ADVERTISED_BNC __ETHTOOL_LINK_MODE_LEGACY_MASK(BNC)
|
||||
#define ADVERTISED_10000baseT_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseT_Full)
|
||||
#define ADVERTISED_Pause __ETHTOOL_LINK_MODE_LEGACY_MASK(Pause)
|
||||
#define ADVERTISED_Asym_Pause __ETHTOOL_LINK_MODE_LEGACY_MASK(Asym_Pause)
|
||||
#define ADVERTISED_2500baseX_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(2500baseX_Full)
|
||||
#define ADVERTISED_Backplane __ETHTOOL_LINK_MODE_LEGACY_MASK(Backplane)
|
||||
#define ADVERTISED_1000baseKX_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(1000baseKX_Full)
|
||||
#define ADVERTISED_10000baseKX4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKX4_Full)
|
||||
#define ADVERTISED_10000baseKR_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseKR_Full)
|
||||
#define ADVERTISED_10000baseR_FEC __ETHTOOL_LINK_MODE_LEGACY_MASK(10000baseR_FEC)
|
||||
#define ADVERTISED_20000baseMLD2_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseMLD2_Full)
|
||||
#define ADVERTISED_20000baseKR2_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(20000baseKR2_Full)
|
||||
#define ADVERTISED_40000baseKR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseKR4_Full)
|
||||
#define ADVERTISED_40000baseCR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseCR4_Full)
|
||||
#define ADVERTISED_40000baseSR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseSR4_Full)
|
||||
#define ADVERTISED_40000baseLR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(40000baseLR4_Full)
|
||||
#define ADVERTISED_56000baseKR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseKR4_Full)
|
||||
#define ADVERTISED_56000baseCR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseCR4_Full)
|
||||
#define ADVERTISED_56000baseSR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseSR4_Full)
|
||||
#define ADVERTISED_56000baseLR4_Full __ETHTOOL_LINK_MODE_LEGACY_MASK(56000baseLR4_Full)
|
||||
/* Please do not define any new ADVERTISED_* macro for bits > 31, see
|
||||
* notice above.
|
||||
*/
|
||||
|
||||
/* The following are all involved in forcing a particular link
|
||||
* mode for the device for setting things. When getting the
|
||||
@ -1533,4 +1604,123 @@ enum ethtool_reset_flags {
|
||||
};
|
||||
#define ETH_RESET_SHARED_SHIFT 16
|
||||
|
||||
|
||||
/**
|
||||
* struct ethtool_link_settings - link control and status
|
||||
*
|
||||
* IMPORTANT, Backward compatibility notice: When implementing new
|
||||
* user-space tools, please first try %ETHTOOL_GLINKSETTINGS, and
|
||||
* if it succeeds use %ETHTOOL_SLINKSETTINGS to change link
|
||||
* settings; do not use %ETHTOOL_SSET if %ETHTOOL_GLINKSETTINGS
|
||||
* succeeded: stick to %ETHTOOL_GLINKSETTINGS/%SLINKSETTINGS in
|
||||
* that case. Conversely, if %ETHTOOL_GLINKSETTINGS fails, use
|
||||
* %ETHTOOL_GSET to query and %ETHTOOL_SSET to change link
|
||||
* settings; do not use %ETHTOOL_SLINKSETTINGS if
|
||||
* %ETHTOOL_GLINKSETTINGS failed: stick to
|
||||
* %ETHTOOL_GSET/%ETHTOOL_SSET in that case.
|
||||
*
|
||||
* @cmd: Command number = %ETHTOOL_GLINKSETTINGS or %ETHTOOL_SLINKSETTINGS
|
||||
* @speed: Link speed (Mbps)
|
||||
* @duplex: Duplex mode; one of %DUPLEX_*
|
||||
* @port: Physical connector type; one of %PORT_*
|
||||
* @phy_address: MDIO address of PHY (transceiver); 0 or 255 if not
|
||||
* applicable. For clause 45 PHYs this is the PRTAD.
|
||||
* @autoneg: Enable/disable autonegotiation and auto-detection;
|
||||
* either %AUTONEG_DISABLE or %AUTONEG_ENABLE
|
||||
* @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO
|
||||
* protocols supported by the interface; 0 if unknown.
|
||||
* Read-only.
|
||||
* @eth_tp_mdix: Ethernet twisted-pair MDI(-X) status; one of
|
||||
* %ETH_TP_MDI_*. If the status is unknown or not applicable, the
|
||||
* value will be %ETH_TP_MDI_INVALID. Read-only.
|
||||
* @eth_tp_mdix_ctrl: Ethernet twisted pair MDI(-X) control; one of
|
||||
* %ETH_TP_MDI_*. If MDI(-X) control is not implemented, reads
|
||||
* yield %ETH_TP_MDI_INVALID and writes may be ignored or rejected.
|
||||
* When written successfully, the link should be renegotiated if
|
||||
* necessary.
|
||||
* @link_mode_masks_nwords: Number of 32-bit words for each of the
|
||||
* supported, advertising, lp_advertising link mode bitmaps. For
|
||||
* %ETHTOOL_GLINKSETTINGS: on entry, number of words passed by user
|
||||
* (>= 0); on return, if handshake in progress, negative if
|
||||
* request size unsupported by kernel: absolute value indicates
|
||||
* kernel recommended size and cmd field is 0, as well as all the
|
||||
* other fields; otherwise (handshake completed), strictly
|
||||
* positive to indicate size used by kernel and cmd field is
|
||||
* %ETHTOOL_GLINKSETTINGS, all other fields populated by driver. For
|
||||
* %ETHTOOL_SLINKSETTINGS: must be valid on entry, ie. a positive
|
||||
* value returned previously by %ETHTOOL_GLINKSETTINGS, otherwise
|
||||
* refused. For drivers: ignore this field (use kernel's
|
||||
* __ETHTOOL_LINK_MODE_MASK_NBITS instead), any change to it will
|
||||
* be overwritten by kernel.
|
||||
* @supported: Bitmap with each bit meaning given by
|
||||
* %ethtool_link_mode_bit_indices for the link modes, physical
|
||||
* connectors and other link features for which the interface
|
||||
* supports autonegotiation or auto-detection. Read-only.
|
||||
* @advertising: Bitmap with each bit meaning given by
|
||||
* %ethtool_link_mode_bit_indices for the link modes, physical
|
||||
* connectors and other link features that are advertised through
|
||||
* autonegotiation or enabled for auto-detection.
|
||||
* @lp_advertising: Bitmap with each bit meaning given by
|
||||
* %ethtool_link_mode_bit_indices for the link modes, and other
|
||||
* link features that the link partner advertised through
|
||||
* autonegotiation; 0 if unknown or not applicable. Read-only.
|
||||
*
|
||||
* If autonegotiation is disabled, the speed and @duplex represent the
|
||||
* fixed link mode and are writable if the driver supports multiple
|
||||
* link modes. If it is enabled then they are read-only; if the link
|
||||
* is up they represent the negotiated link mode; if the link is down,
|
||||
* the speed is 0, %SPEED_UNKNOWN or the highest enabled speed and
|
||||
* @duplex is %DUPLEX_UNKNOWN or the best enabled duplex mode.
|
||||
*
|
||||
* Some hardware interfaces may have multiple PHYs and/or physical
|
||||
* connectors fitted or do not allow the driver to detect which are
|
||||
* fitted. For these interfaces @port and/or @phy_address may be
|
||||
* writable, possibly dependent on @autoneg being %AUTONEG_DISABLE.
|
||||
* Otherwise, attempts to write different values may be ignored or
|
||||
* rejected.
|
||||
*
|
||||
* Deprecated %ethtool_cmd fields transceiver, maxtxpkt and maxrxpkt
|
||||
* are not available in %ethtool_link_settings. Until all drivers are
|
||||
* converted to ignore them or to the new %ethtool_link_settings API,
|
||||
* for both queries and changes, users should always try
|
||||
* %ETHTOOL_GLINKSETTINGS first, and if it fails with -ENOTSUPP stick
|
||||
* only to %ETHTOOL_GSET and %ETHTOOL_SSET consistently. If it
|
||||
* succeeds, then users should stick to %ETHTOOL_GLINKSETTINGS and
|
||||
* %ETHTOOL_SLINKSETTINGS (which would support drivers implementing
|
||||
* either %ethtool_cmd or %ethtool_link_settings).
|
||||
*
|
||||
* Users should assume that all fields not marked read-only are
|
||||
* writable and subject to validation by the driver. They should use
|
||||
* %ETHTOOL_GLINKSETTINGS to get the current values before making specific
|
||||
* changes and then applying them with %ETHTOOL_SLINKSETTINGS.
|
||||
*
|
||||
* Drivers that implement %get_link_ksettings and/or
|
||||
* %set_link_ksettings should ignore the @cmd
|
||||
* and @link_mode_masks_nwords fields (any change to them overwritten
|
||||
* by kernel), and rely only on kernel's internal
|
||||
* %__ETHTOOL_LINK_MODE_MASK_NBITS and
|
||||
* %ethtool_link_mode_mask_t. Drivers that implement
|
||||
* %set_link_ksettings() should validate all fields other than @cmd
|
||||
* and @link_mode_masks_nwords that are not described as read-only or
|
||||
* deprecated, and must ignore all fields described as read-only.
|
||||
*/
|
||||
struct ethtool_link_settings {
|
||||
__u32 cmd;
|
||||
__u32 speed;
|
||||
__u8 duplex;
|
||||
__u8 port;
|
||||
__u8 phy_address;
|
||||
__u8 autoneg;
|
||||
__u8 mdio_support;
|
||||
__u8 eth_tp_mdix;
|
||||
__u8 eth_tp_mdix_ctrl;
|
||||
__s8 link_mode_masks_nwords;
|
||||
__u32 reserved[8];
|
||||
__u32 link_mode_masks[0];
|
||||
/* layout of link_mode_masks fields:
|
||||
* __u32 map_supported[link_mode_masks_nwords];
|
||||
* __u32 map_advertising[link_mode_masks_nwords];
|
||||
* __u32 map_lp_advertising[link_mode_masks_nwords];
|
||||
*/
|
||||
};
|
||||
#endif /* _UAPI_LINUX_ETHTOOL_H */
|
||||
|
||||
@ -387,6 +387,359 @@ static int __ethtool_set_flags(struct net_device *dev, u32 data)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void convert_legacy_u32_to_link_mode(unsigned long *dst, u32 legacy_u32)
|
||||
{
|
||||
bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
dst[0] = legacy_u32;
|
||||
}
|
||||
|
||||
/* return false if src had higher bits set. lower bits always updated. */
|
||||
static bool convert_link_mode_to_legacy_u32(u32 *legacy_u32,
|
||||
const unsigned long *src)
|
||||
{
|
||||
bool retval = true;
|
||||
|
||||
/* TODO: following test will soon always be true */
|
||||
if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
|
||||
__ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
|
||||
|
||||
bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
bitmap_fill(ext, 32);
|
||||
bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
if (bitmap_intersects(ext, src,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS)) {
|
||||
/* src mask goes beyond bit 31 */
|
||||
retval = false;
|
||||
}
|
||||
}
|
||||
*legacy_u32 = src[0];
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* return false if legacy contained non-0 deprecated fields
|
||||
* transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
|
||||
*/
|
||||
static bool
|
||||
convert_legacy_settings_to_link_ksettings(
|
||||
struct ethtool_link_ksettings *link_ksettings,
|
||||
const struct ethtool_cmd *legacy_settings)
|
||||
{
|
||||
bool retval = true;
|
||||
|
||||
memset(link_ksettings, 0, sizeof(*link_ksettings));
|
||||
|
||||
/* This is used to tell users that driver is still using these
|
||||
* deprecated legacy fields, and they should not use
|
||||
* %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
|
||||
*/
|
||||
if (legacy_settings->transceiver ||
|
||||
legacy_settings->maxtxpkt ||
|
||||
legacy_settings->maxrxpkt)
|
||||
retval = false;
|
||||
|
||||
convert_legacy_u32_to_link_mode(
|
||||
link_ksettings->link_modes.supported,
|
||||
legacy_settings->supported);
|
||||
convert_legacy_u32_to_link_mode(
|
||||
link_ksettings->link_modes.advertising,
|
||||
legacy_settings->advertising);
|
||||
convert_legacy_u32_to_link_mode(
|
||||
link_ksettings->link_modes.lp_advertising,
|
||||
legacy_settings->lp_advertising);
|
||||
link_ksettings->base.speed
|
||||
= ethtool_cmd_speed(legacy_settings);
|
||||
link_ksettings->base.duplex
|
||||
= legacy_settings->duplex;
|
||||
link_ksettings->base.port
|
||||
= legacy_settings->port;
|
||||
link_ksettings->base.phy_address
|
||||
= legacy_settings->phy_address;
|
||||
link_ksettings->base.autoneg
|
||||
= legacy_settings->autoneg;
|
||||
link_ksettings->base.mdio_support
|
||||
= legacy_settings->mdio_support;
|
||||
link_ksettings->base.eth_tp_mdix
|
||||
= legacy_settings->eth_tp_mdix;
|
||||
link_ksettings->base.eth_tp_mdix_ctrl
|
||||
= legacy_settings->eth_tp_mdix_ctrl;
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* return false if ksettings link modes had higher bits
|
||||
* set. legacy_settings always updated (best effort)
|
||||
*/
|
||||
static bool
|
||||
convert_link_ksettings_to_legacy_settings(
|
||||
struct ethtool_cmd *legacy_settings,
|
||||
const struct ethtool_link_ksettings *link_ksettings)
|
||||
{
|
||||
bool retval = true;
|
||||
|
||||
memset(legacy_settings, 0, sizeof(*legacy_settings));
|
||||
/* this also clears the deprecated fields in legacy structure:
|
||||
* __u8 transceiver;
|
||||
* __u32 maxtxpkt;
|
||||
* __u32 maxrxpkt;
|
||||
*/
|
||||
|
||||
retval &= convert_link_mode_to_legacy_u32(
|
||||
&legacy_settings->supported,
|
||||
link_ksettings->link_modes.supported);
|
||||
retval &= convert_link_mode_to_legacy_u32(
|
||||
&legacy_settings->advertising,
|
||||
link_ksettings->link_modes.advertising);
|
||||
retval &= convert_link_mode_to_legacy_u32(
|
||||
&legacy_settings->lp_advertising,
|
||||
link_ksettings->link_modes.lp_advertising);
|
||||
ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
|
||||
legacy_settings->duplex
|
||||
= link_ksettings->base.duplex;
|
||||
legacy_settings->port
|
||||
= link_ksettings->base.port;
|
||||
legacy_settings->phy_address
|
||||
= link_ksettings->base.phy_address;
|
||||
legacy_settings->autoneg
|
||||
= link_ksettings->base.autoneg;
|
||||
legacy_settings->mdio_support
|
||||
= link_ksettings->base.mdio_support;
|
||||
legacy_settings->eth_tp_mdix
|
||||
= link_ksettings->base.eth_tp_mdix;
|
||||
legacy_settings->eth_tp_mdix_ctrl
|
||||
= link_ksettings->base.eth_tp_mdix_ctrl;
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* number of 32-bit words to store the user's link mode bitmaps */
|
||||
#define __ETHTOOL_LINK_MODE_MASK_NU32 \
|
||||
DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
|
||||
|
||||
/* layout of the struct passed from/to userland */
|
||||
struct ethtool_link_usettings {
|
||||
struct ethtool_link_settings base;
|
||||
struct {
|
||||
__u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
|
||||
__u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
|
||||
__u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
|
||||
} link_modes;
|
||||
};
|
||||
|
||||
/* Internal kernel helper to query a device ethtool_link_settings.
|
||||
*
|
||||
* Backward compatibility note: for compatibility with legacy drivers
|
||||
* that implement only the ethtool_cmd API, this has to work with both
|
||||
* drivers implementing get_link_ksettings API and drivers
|
||||
* implementing get_settings API. When drivers implement get_settings
|
||||
* and report ethtool_cmd deprecated fields
|
||||
* (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
|
||||
* because the resulting struct ethtool_link_settings does not report them.
|
||||
*/
|
||||
int __ethtool_get_link_ksettings(struct net_device *dev,
|
||||
struct ethtool_link_ksettings *link_ksettings)
|
||||
{
|
||||
int err;
|
||||
struct ethtool_cmd cmd;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (dev->ethtool_ops->get_link_ksettings) {
|
||||
memset(link_ksettings, 0, sizeof(*link_ksettings));
|
||||
return dev->ethtool_ops->get_link_ksettings(dev,
|
||||
link_ksettings);
|
||||
}
|
||||
|
||||
/* driver doesn't support %ethtool_link_ksettings API. revert to
|
||||
* legacy %ethtool_cmd API, unless it's not supported either.
|
||||
* TODO: remove when ethtool_ops::get_settings disappears internally
|
||||
*/
|
||||
err = __ethtool_get_settings(dev, &cmd);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
|
||||
*/
|
||||
convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL(__ethtool_get_link_ksettings);
|
||||
|
||||
/* convert ethtool_link_usettings in user space to a kernel internal
|
||||
* ethtool_link_ksettings. return 0 on success, errno on error.
|
||||
*/
|
||||
static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
|
||||
const void __user *from)
|
||||
{
|
||||
struct ethtool_link_usettings link_usettings;
|
||||
|
||||
if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
|
||||
return -EFAULT;
|
||||
|
||||
memcpy(&to->base, &link_usettings.base, sizeof(to->base));
|
||||
bitmap_from_u32array(to->link_modes.supported,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
||||
link_usettings.link_modes.supported,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32);
|
||||
bitmap_from_u32array(to->link_modes.advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
||||
link_usettings.link_modes.advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32);
|
||||
bitmap_from_u32array(to->link_modes.lp_advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
||||
link_usettings.link_modes.lp_advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* convert a kernel internal ethtool_link_ksettings to
|
||||
* ethtool_link_usettings in user space. return 0 on success, errno on
|
||||
* error.
|
||||
*/
|
||||
static int
|
||||
store_link_ksettings_for_user(void __user *to,
|
||||
const struct ethtool_link_ksettings *from)
|
||||
{
|
||||
struct ethtool_link_usettings link_usettings;
|
||||
|
||||
memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
|
||||
bitmap_to_u32array(link_usettings.link_modes.supported,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32,
|
||||
from->link_modes.supported,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
bitmap_to_u32array(link_usettings.link_modes.advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32,
|
||||
from->link_modes.advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NU32,
|
||||
from->link_modes.lp_advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
|
||||
if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Query device for its ethtool_link_settings.
|
||||
*
|
||||
* Backward compatibility note: this function must fail when driver
|
||||
* does not implement ethtool::get_link_ksettings, even if legacy
|
||||
* ethtool_ops::get_settings is implemented. This tells new versions
|
||||
* of ethtool that they should use the legacy API %ETHTOOL_GSET for
|
||||
* this driver, so that they can correctly access the ethtool_cmd
|
||||
* deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
|
||||
* implements ethtool_ops::get_settings anymore.
|
||||
*/
|
||||
static int ethtool_get_link_ksettings(struct net_device *dev,
|
||||
void __user *useraddr)
|
||||
{
|
||||
int err = 0;
|
||||
struct ethtool_link_ksettings link_ksettings;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (!dev->ethtool_ops->get_link_ksettings)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
/* handle bitmap nbits handshake */
|
||||
if (copy_from_user(&link_ksettings.base, useraddr,
|
||||
sizeof(link_ksettings.base)))
|
||||
return -EFAULT;
|
||||
|
||||
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
||||
!= link_ksettings.base.link_mode_masks_nwords) {
|
||||
/* wrong link mode nbits requested */
|
||||
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
||||
/* keep cmd field reset to 0 */
|
||||
/* send back number of words required as negative val */
|
||||
compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
|
||||
"need too many bits for link modes!");
|
||||
link_ksettings.base.link_mode_masks_nwords
|
||||
= -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
|
||||
|
||||
/* copy the base fields back to user, not the link
|
||||
* mode bitmaps
|
||||
*/
|
||||
if (copy_to_user(useraddr, &link_ksettings.base,
|
||||
sizeof(link_ksettings.base)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* handshake successful: user/kernel agree on
|
||||
* link_mode_masks_nwords
|
||||
*/
|
||||
|
||||
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
||||
err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* make sure we tell the right values to user */
|
||||
link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
|
||||
link_ksettings.base.link_mode_masks_nwords
|
||||
= __ETHTOOL_LINK_MODE_MASK_NU32;
|
||||
|
||||
return store_link_ksettings_for_user(useraddr, &link_ksettings);
|
||||
}
|
||||
|
||||
/* Update device ethtool_link_settings.
|
||||
*
|
||||
* Backward compatibility note: this function must fail when driver
|
||||
* does not implement ethtool::set_link_ksettings, even if legacy
|
||||
* ethtool_ops::set_settings is implemented. This tells new versions
|
||||
* of ethtool that they should use the legacy API %ETHTOOL_SSET for
|
||||
* this driver, so that they can correctly update the ethtool_cmd
|
||||
* deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
|
||||
* implements ethtool_ops::get_settings anymore.
|
||||
*/
|
||||
static int ethtool_set_link_ksettings(struct net_device *dev,
|
||||
void __user *useraddr)
|
||||
{
|
||||
int err;
|
||||
struct ethtool_link_ksettings link_ksettings;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (!dev->ethtool_ops->set_link_ksettings)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
/* make sure nbits field has expected value */
|
||||
if (copy_from_user(&link_ksettings.base, useraddr,
|
||||
sizeof(link_ksettings.base)))
|
||||
return -EFAULT;
|
||||
|
||||
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
||||
!= link_ksettings.base.link_mode_masks_nwords)
|
||||
return -EINVAL;
|
||||
|
||||
/* copy the whole structure, now that we know it has expected
|
||||
* format
|
||||
*/
|
||||
err = load_link_ksettings_from_user(&link_ksettings, useraddr);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
/* re-check nwords field, just in case */
|
||||
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
||||
!= link_ksettings.base.link_mode_masks_nwords)
|
||||
return -EINVAL;
|
||||
|
||||
return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
|
||||
}
|
||||
|
||||
/* Internal kernel helper to query a device ethtool_cmd settings.
|
||||
*
|
||||
* Note about transition to ethtool_link_settings API: We do not need
|
||||
* (or want) this function to support "dev" instances that implement
|
||||
* the ethtool_link_settings API as we will update the drivers calling
|
||||
* this function to call __ethtool_get_link_ksettings instead, before
|
||||
* the first drivers implement ethtool_ops::get_link_ksettings.
|
||||
*
|
||||
* TODO 1: at least make this function static when no driver is using it
|
||||
* TODO 2: remove when ethtool_ops::get_settings disappears internally
|
||||
*/
|
||||
int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
||||
{
|
||||
ASSERT_RTNL();
|
||||
@ -400,30 +753,112 @@ int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
||||
}
|
||||
EXPORT_SYMBOL(__ethtool_get_settings);
|
||||
|
||||
static void
|
||||
warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
|
||||
{
|
||||
char name[sizeof(current->comm)];
|
||||
|
||||
pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
|
||||
get_task_comm(name, current), details);
|
||||
}
|
||||
|
||||
/* Query device for its ethtool_cmd settings.
|
||||
*
|
||||
* Backward compatibility note: for compatibility with legacy ethtool,
|
||||
* this has to work with both drivers implementing get_link_ksettings
|
||||
* API and drivers implementing get_settings API. When drivers
|
||||
* implement get_link_ksettings and report higher link mode bits, a
|
||||
* kernel warning is logged once (with name of 1st driver/device) to
|
||||
* recommend user to upgrade ethtool, but the command is successful
|
||||
* (only the lower link mode bits reported back to user).
|
||||
*/
|
||||
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
|
||||
{
|
||||
int err;
|
||||
struct ethtool_cmd cmd;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (dev->ethtool_ops->get_link_ksettings) {
|
||||
/* First, use link_ksettings API if it is supported */
|
||||
int err;
|
||||
struct ethtool_link_ksettings link_ksettings;
|
||||
|
||||
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
||||
err = dev->ethtool_ops->get_link_ksettings(dev,
|
||||
&link_ksettings);
|
||||
if (err < 0)
|
||||
return err;
|
||||
if (!convert_link_ksettings_to_legacy_settings(&cmd,
|
||||
&link_ksettings))
|
||||
warn_incomplete_ethtool_legacy_settings_conversion(
|
||||
"link modes are only partially reported");
|
||||
|
||||
/* send a sensible cmd tag back to user */
|
||||
cmd.cmd = ETHTOOL_GSET;
|
||||
} else {
|
||||
int err;
|
||||
/* TODO: return -EOPNOTSUPP when
|
||||
* ethtool_ops::get_settings disappears internally
|
||||
*/
|
||||
|
||||
/* driver doesn't support %ethtool_link_ksettings
|
||||
* API. revert to legacy %ethtool_cmd API, unless it's
|
||||
* not supported either.
|
||||
*/
|
||||
err = __ethtool_get_settings(dev, &cmd);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
|
||||
if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Update device link settings with given ethtool_cmd.
|
||||
*
|
||||
* Backward compatibility note: for compatibility with legacy ethtool,
|
||||
* this has to work with both drivers implementing set_link_ksettings
|
||||
* API and drivers implementing set_settings API. When drivers
|
||||
* implement set_link_ksettings and user's request updates deprecated
|
||||
* ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
|
||||
* warning is logged once (with name of 1st driver/device) to
|
||||
* recommend user to upgrade ethtool, and the request is rejected.
|
||||
*/
|
||||
static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
|
||||
{
|
||||
struct ethtool_cmd cmd;
|
||||
|
||||
if (!dev->ethtool_ops->set_settings)
|
||||
return -EOPNOTSUPP;
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
|
||||
return -EFAULT;
|
||||
|
||||
/* first, try new %ethtool_link_ksettings API. */
|
||||
if (dev->ethtool_ops->set_link_ksettings) {
|
||||
struct ethtool_link_ksettings link_ksettings;
|
||||
|
||||
if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
|
||||
&cmd))
|
||||
return -EINVAL;
|
||||
|
||||
link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
|
||||
link_ksettings.base.link_mode_masks_nwords
|
||||
= __ETHTOOL_LINK_MODE_MASK_NU32;
|
||||
return dev->ethtool_ops->set_link_ksettings(dev,
|
||||
&link_ksettings);
|
||||
}
|
||||
|
||||
/* legacy %ethtool_cmd API */
|
||||
|
||||
/* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
|
||||
* disappears internally
|
||||
*/
|
||||
|
||||
if (!dev->ethtool_ops->set_settings)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
return dev->ethtool_ops->set_settings(dev, &cmd);
|
||||
}
|
||||
|
||||
@ -2252,6 +2687,12 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
|
||||
case ETHTOOL_PERQUEUE:
|
||||
rc = ethtool_set_per_queue(dev, useraddr);
|
||||
break;
|
||||
case ETHTOOL_GLINKSETTINGS:
|
||||
rc = ethtool_get_link_ksettings(dev, useraddr);
|
||||
break;
|
||||
case ETHTOOL_SLINKSETTINGS:
|
||||
rc = ethtool_set_link_ksettings(dev, useraddr);
|
||||
break;
|
||||
default:
|
||||
rc = -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user