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abb521e36b
CRC32 engines are usually easily available in hardware and generate OK spread for RSS hash. Add CRC32 RSS hash function to ethtool API. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
379 lines
16 KiB
C
379 lines
16 KiB
C
/*
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* ethtool.h: Defines for Linux ethtool.
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*
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* Copyright (C) 1998 David S. Miller (davem@redhat.com)
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* Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
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* Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
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* Portions Copyright 2002 Intel (eli.kupermann@intel.com,
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* christopher.leech@intel.com,
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* scott.feldman@intel.com)
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* Portions Copyright (C) Sun Microsystems 2008
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*/
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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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#ifdef CONFIG_COMPAT
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struct compat_ethtool_rx_flow_spec {
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u32 flow_type;
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union ethtool_flow_union h_u;
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struct ethtool_flow_ext h_ext;
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union ethtool_flow_union m_u;
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struct ethtool_flow_ext m_ext;
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compat_u64 ring_cookie;
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u32 location;
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};
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struct compat_ethtool_rxnfc {
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u32 cmd;
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u32 flow_type;
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compat_u64 data;
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struct compat_ethtool_rx_flow_spec fs;
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u32 rule_cnt;
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u32 rule_locs[0];
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};
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#endif /* CONFIG_COMPAT */
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#include <linux/rculist.h>
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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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* @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
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* @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
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* is not supported)
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* @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
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* is not supported)
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*/
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enum ethtool_phys_id_state {
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ETHTOOL_ID_INACTIVE,
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ETHTOOL_ID_ACTIVE,
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ETHTOOL_ID_ON,
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ETHTOOL_ID_OFF
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};
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enum {
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ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
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ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
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ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
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/*
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* Add your fresh new hash function bits above and remember to update
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* rss_hash_func_strings[] in ethtool.c
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*/
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ETH_RSS_HASH_FUNCS_COUNT
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};
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#define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
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#define __ETH_RSS_HASH(name) __ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
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#define ETH_RSS_HASH_TOP __ETH_RSS_HASH(TOP)
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#define ETH_RSS_HASH_XOR __ETH_RSS_HASH(XOR)
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#define ETH_RSS_HASH_CRC32 __ETH_RSS_HASH(CRC32)
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#define ETH_RSS_HASH_UNKNOWN 0
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#define ETH_RSS_HASH_NO_CHANGE 0
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struct net_device;
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/* Some generic methods drivers may use in their ethtool_ops */
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u32 ethtool_op_get_link(struct net_device *dev);
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int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
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/**
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* ethtool_rxfh_indir_default - get default value for RX flow hash indirection
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* @index: Index in RX flow hash indirection table
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* @n_rx_rings: Number of RX rings to use
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*
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* This function provides the default policy for RX flow hash indirection.
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*/
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static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
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{
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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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void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
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u32 legacy_u32);
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/* return false if src had higher bits set. lower bits always updated. */
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bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
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const unsigned long *src);
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/**
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* struct ethtool_ops - optional netdev operations
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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
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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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* implemented, the @driver and @bus_info fields will be filled in
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* according to the netdev's parent device.
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* @get_regs_len: Get buffer length required for @get_regs
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* @get_regs: Get device registers
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* @get_wol: Report whether Wake-on-Lan is enabled
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* @set_wol: Turn Wake-on-Lan on or off. Returns a negative error code
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* or zero.
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* @get_msglevel: Report driver message level. This should be the value
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* of the @msg_enable field used by netif logging functions.
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* @set_msglevel: Set driver message level
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* @nway_reset: Restart autonegotiation. Returns a negative error code
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* or zero.
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* @get_link: Report whether physical link is up. Will only be called if
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* the netdev is up. Should usually be set to ethtool_op_get_link(),
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* which uses netif_carrier_ok().
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* @get_eeprom: Read data from the device EEPROM.
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* Should fill in the magic field. Don't need to check len for zero
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* or wraparound. Fill in the data argument with the eeprom values
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* from offset to offset + len. Update len to the amount read.
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* Returns an error or zero.
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* @set_eeprom: Write data to the device EEPROM.
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* Should validate the magic field. Don't need to check len for zero
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* or wraparound. Update len to the amount written. Returns an error
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* or zero.
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* @get_coalesce: Get interrupt coalescing parameters. Returns a negative
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* error code or zero.
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* @set_coalesce: Set interrupt coalescing parameters. Returns a negative
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* error code or zero.
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* @get_ringparam: Report ring sizes
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* @set_ringparam: Set ring sizes. Returns a negative error code or zero.
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* @get_pauseparam: Report pause parameters
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* @set_pauseparam: Set pause parameters. Returns a negative error code
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* or zero.
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* @self_test: Run specified self-tests
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* @get_strings: Return a set of strings that describe the requested objects
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* @set_phys_id: Identify the physical devices, e.g. by flashing an LED
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* attached to it. The implementation may update the indicator
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* asynchronously or synchronously, but in either case it must return
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* quickly. It is initially called with the argument %ETHTOOL_ID_ACTIVE,
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* and must either activate asynchronous updates and return zero, return
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* a negative error or return a positive frequency for synchronous
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* indication (e.g. 1 for one on/off cycle per second). If it returns
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* a frequency then it will be called again at intervals with the
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* argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
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* the indicator accordingly. Finally, it is called with the argument
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* %ETHTOOL_ID_INACTIVE and must deactivate the indicator. Returns a
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* negative error code or zero.
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* @get_ethtool_stats: Return extended statistics about the device.
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* This is only useful if the device maintains statistics not
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* included in &struct rtnl_link_stats64.
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* @begin: Function to be called before any other operation. Returns a
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* negative error code or zero.
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* @complete: Function to be called after any other operation except
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* @begin. Will be called even if the other operation failed.
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* @get_priv_flags: Report driver-specific feature flags.
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* @set_priv_flags: Set driver-specific feature flags. Returns a negative
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* error code or zero.
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* @get_sset_count: Get number of strings that @get_strings will write.
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* @get_rxnfc: Get RX flow classification rules. Returns a negative
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* error code or zero.
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* @set_rxnfc: Set RX flow classification rules. Returns a negative
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* error code or zero.
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* @flash_device: Write a firmware image to device's flash memory.
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* Returns a negative error code or zero.
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* @reset: Reset (part of) the device, as specified by a bitmask of
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* flags from &enum ethtool_reset_flags. Returns a negative
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* error code or zero.
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* @get_rxfh_key_size: Get the size of the RX flow hash key.
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* Returns zero if not supported for this specific device.
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* @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
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* Returns zero if not supported for this specific device.
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* @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
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* and/or hash function.
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* Returns a negative error code or zero.
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* @set_rxfh: Set the contents of the RX flow hash indirection table, hash
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* key, and/or hash function. Arguments which are set to %NULL or zero
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* will remain unchanged.
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* Returns a negative error code or zero. An error code must be returned
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* if at least one unsupported change was requested.
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* @get_channels: Get number of channels.
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* @set_channels: Set number of channels. Returns a negative error code or
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* zero.
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* @get_dump_flag: Get dump flag indicating current dump length, version,
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* and flag of the device.
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* @get_dump_data: Get dump data.
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* @set_dump: Set dump specific flags to the device.
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* @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
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* Drivers supporting transmit time stamps in software should set this to
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* ethtool_op_get_ts_info().
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* @get_module_info: Get the size and type of the eeprom contained within
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* a plug-in module.
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* @get_module_eeprom: Get the eeprom information from the plug-in module
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* @get_eee: Get Energy-Efficient (EEE) supported and status.
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* @set_eee: Set EEE status (enable/disable) as well as LPI timers.
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* @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
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* It must check that the given queue number is valid. If neither a RX nor
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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, set the inapplicable fields to ~0 and return 0.
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* Returns a negative error code or zero.
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* @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
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* It must check that the given queue number is valid. If neither a RX nor
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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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* hold the RTNL lock.
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*
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* See the structures used by these operations for further documentation.
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* Note that for all operations using a structure ending with a zero-
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* length array, the array is allocated separately in the kernel and
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* is passed to the driver as an additional parameter.
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*
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* See &struct net_device and &struct net_device_ops for documentation
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* of the generic netdev features interface.
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*/
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struct ethtool_ops {
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int (*get_settings)(struct net_device *, struct ethtool_cmd *);
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int (*set_settings)(struct net_device *, struct ethtool_cmd *);
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void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
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int (*get_regs_len)(struct net_device *);
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void (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
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void (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
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int (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
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u32 (*get_msglevel)(struct net_device *);
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void (*set_msglevel)(struct net_device *, u32);
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int (*nway_reset)(struct net_device *);
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u32 (*get_link)(struct net_device *);
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int (*get_eeprom_len)(struct net_device *);
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int (*get_eeprom)(struct net_device *,
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struct ethtool_eeprom *, u8 *);
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int (*set_eeprom)(struct net_device *,
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struct ethtool_eeprom *, u8 *);
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int (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
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int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
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void (*get_ringparam)(struct net_device *,
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struct ethtool_ringparam *);
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int (*set_ringparam)(struct net_device *,
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struct ethtool_ringparam *);
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void (*get_pauseparam)(struct net_device *,
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struct ethtool_pauseparam*);
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int (*set_pauseparam)(struct net_device *,
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struct ethtool_pauseparam*);
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void (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
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void (*get_strings)(struct net_device *, u32 stringset, u8 *);
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int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
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void (*get_ethtool_stats)(struct net_device *,
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struct ethtool_stats *, u64 *);
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int (*begin)(struct net_device *);
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void (*complete)(struct net_device *);
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u32 (*get_priv_flags)(struct net_device *);
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int (*set_priv_flags)(struct net_device *, u32);
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int (*get_sset_count)(struct net_device *, int);
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int (*get_rxnfc)(struct net_device *,
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struct ethtool_rxnfc *, u32 *rule_locs);
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int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
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int (*flash_device)(struct net_device *, struct ethtool_flash *);
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int (*reset)(struct net_device *, u32 *);
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u32 (*get_rxfh_key_size)(struct net_device *);
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u32 (*get_rxfh_indir_size)(struct net_device *);
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int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
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u8 *hfunc);
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int (*set_rxfh)(struct net_device *, const u32 *indir,
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const u8 *key, const u8 hfunc);
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void (*get_channels)(struct net_device *, struct ethtool_channels *);
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int (*set_channels)(struct net_device *, struct ethtool_channels *);
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int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
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int (*get_dump_data)(struct net_device *,
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struct ethtool_dump *, void *);
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int (*set_dump)(struct net_device *, struct ethtool_dump *);
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int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
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int (*get_module_info)(struct net_device *,
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struct ethtool_modinfo *);
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int (*get_module_eeprom)(struct net_device *,
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struct ethtool_eeprom *, u8 *);
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int (*get_eee)(struct net_device *, struct ethtool_eee *);
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int (*set_eee)(struct net_device *, struct ethtool_eee *);
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int (*get_tunable)(struct net_device *,
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const struct ethtool_tunable *, void *);
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int (*set_tunable)(struct net_device *,
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const struct ethtool_tunable *, const void *);
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int (*get_per_queue_coalesce)(struct net_device *, u32,
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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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