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45c767faef
Add a linkmode helper to set the flow control advertisement in an ethtool linkmode mask according to the tx/rx capabilities. This implementation is moved from phylib, and documented with an analysis of its shortcomings. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
#ifndef __LINKMODE_H
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#define __LINKMODE_H
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#include <linux/bitmap.h>
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#include <linux/ethtool.h>
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#include <uapi/linux/ethtool.h>
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static inline void linkmode_zero(unsigned long *dst)
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{
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bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline void linkmode_copy(unsigned long *dst, const unsigned long *src)
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{
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bitmap_copy(dst, src, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline void linkmode_and(unsigned long *dst, const unsigned long *a,
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const unsigned long *b)
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{
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bitmap_and(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline void linkmode_or(unsigned long *dst, const unsigned long *a,
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const unsigned long *b)
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{
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bitmap_or(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline bool linkmode_empty(const unsigned long *src)
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{
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return bitmap_empty(src, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline int linkmode_andnot(unsigned long *dst, const unsigned long *src1,
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const unsigned long *src2)
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{
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return bitmap_andnot(dst, src1, src2, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline void linkmode_set_bit(int nr, volatile unsigned long *addr)
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{
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__set_bit(nr, addr);
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}
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static inline void linkmode_set_bit_array(const int *array, int array_size,
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unsigned long *addr)
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{
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int i;
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for (i = 0; i < array_size; i++)
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linkmode_set_bit(array[i], addr);
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}
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static inline void linkmode_clear_bit(int nr, volatile unsigned long *addr)
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{
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__clear_bit(nr, addr);
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}
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static inline void linkmode_mod_bit(int nr, volatile unsigned long *addr,
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int set)
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{
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if (set)
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linkmode_set_bit(nr, addr);
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else
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linkmode_clear_bit(nr, addr);
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}
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static inline void linkmode_change_bit(int nr, volatile unsigned long *addr)
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{
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__change_bit(nr, addr);
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}
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static inline int linkmode_test_bit(int nr, const volatile unsigned long *addr)
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{
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return test_bit(nr, addr);
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}
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static inline int linkmode_equal(const unsigned long *src1,
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const unsigned long *src2)
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{
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return bitmap_equal(src1, src2, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static inline int linkmode_subset(const unsigned long *src1,
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const unsigned long *src2)
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{
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return bitmap_subset(src1, src2, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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void linkmode_resolve_pause(const unsigned long *local_adv,
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const unsigned long *partner_adv,
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bool *tx_pause, bool *rx_pause);
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void linkmode_set_pause(unsigned long *advertisement, bool tx, bool rx);
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#endif /* __LINKMODE_H */
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