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net: mii: add linkmode_adv_to_mii_adv_x()

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Add a helper to convert a linkmode advertisement to a clause 37
advertisement value for 1000base-x and 2500base-x.

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>
This commit is contained in:
Russell King 2020-03-14 10:09:58 +00:00 committed by David S. Miller
parent f655418785
commit a9f28eba6e
1 changed files with 20 additions and 0 deletions
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20
include/linux/mii.h
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@ -536,6 +536,26 @@ static inline void mii_lpa_mod_linkmode_x(unsigned long *linkmodes, u16 lpa,
lpa & LPA_1000XFULL);
}
/**
* linkmode_adv_to_mii_adv_x - encode a linkmode to config_reg
* @linkmodes: linkmodes
* @fd_bit: full duplex bit
*/
static inline u16 linkmode_adv_to_mii_adv_x(const unsigned long *linkmodes,
int fd_bit)
{
u16 adv = 0;
if (linkmode_test_bit(fd_bit, linkmodes))
adv |= ADVERTISE_1000XFULL;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes))
adv |= ADVERTISE_1000XPAUSE;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes))
adv |= ADVERTISE_1000XPSE_ASYM;
return adv;
}
/**
* mii_advertise_flowctrl - get flow control advertisement flags
* @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)