Commit a8c30832 authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
Browse files

mii: Add mii_advertise_flowctrl() 



This converts flow control capabilites to an advertising mask and can
be useful in combination with mii_resolve_flowctrl_fdx().

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 44c22ee9

include/linux/mii.h

+16 −0
Original line number Diff line number Diff line
@@ -239,6 +239,22 @@ static inline unsigned int mii_duplex (unsigned int duplex_lock, 
	return 0;

}



/**

 * mii_advertise_flowctrl - get flow control advertisement flags

 * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)

 */

static inline u16 mii_advertise_flowctrl(int cap)

{

	u16 adv = 0;



	if (cap & FLOW_CTRL_RX)

		adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;

	if (cap & FLOW_CTRL_TX)

		adv ^= ADVERTISE_PAUSE_ASYM;



	return adv;

}



/**

 * mii_resolve_flowctrl_fdx

 * @lcladv: value of MII ADVERTISE register