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mii: Simplify mii_resolve_flowctrl_fdx()

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This is a shorter and more comprehensible formulation of the
conditions for each flow control mode.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-04-29 08:15:05 +00:00 committed by David S. Miller
parent 4023939667
commit 44c22ee91b
1 changed files with 6 additions and 12 deletions
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18
include/linux/mii.h
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@ -250,18 +250,12 @@ static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
{
u8 cap = 0;
if (lcladv & ADVERTISE_PAUSE_CAP) {
if (lcladv & ADVERTISE_PAUSE_ASYM) {
if (rmtadv & LPA_PAUSE_CAP)
cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
else if (rmtadv & LPA_PAUSE_ASYM)
cap = FLOW_CTRL_RX;
} else {
if (rmtadv & LPA_PAUSE_CAP)
cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
}
} else if (lcladv & ADVERTISE_PAUSE_ASYM) {
if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
if (lcladv & ADVERTISE_PAUSE_CAP)
cap = FLOW_CTRL_RX;
else if (rmtadv & ADVERTISE_PAUSE_CAP)
cap = FLOW_CTRL_TX;
}