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[PATCH] b44: disable default tx pause

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Disable default tx pause frame support.
The b44 controller has a bug that generates excessive tx pause
frames.

Signed-off-by: Gary Zambrano <zambrano@broadcom.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Gary Zambrano 2006-04-10 12:02:21 -07:00 committed by Jeff Garzik
parent 4be5de2525
commit 2b474cf538
1 changed files with 11 additions and 18 deletions
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29
drivers/net/b44.c
View file

@ -410,25 +410,18 @@ static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
{
u32 pause_enab = bp->flags & (B44_FLAG_TX_PAUSE |
B44_FLAG_RX_PAUSE);
u32 pause_enab = 0;
if (local & ADVERTISE_PAUSE_CAP) {
if (local & ADVERTISE_PAUSE_ASYM) {
if (remote & LPA_PAUSE_CAP)
pause_enab |= (B44_FLAG_TX_PAUSE |
B44_FLAG_RX_PAUSE);
else if (remote & LPA_PAUSE_ASYM)
pause_enab |= B44_FLAG_RX_PAUSE;
} else {
if (remote & LPA_PAUSE_CAP)
pause_enab |= (B44_FLAG_TX_PAUSE |
B44_FLAG_RX_PAUSE);
}
} else if (local & ADVERTISE_PAUSE_ASYM) {
if ((remote & LPA_PAUSE_CAP) &&
(remote & LPA_PAUSE_ASYM))
pause_enab |= B44_FLAG_TX_PAUSE;
/* The driver supports only rx pause by default because
the b44 mac tx pause mechanism generates excessive
pause frames.
Use ethtool to turn on b44 tx pause if necessary.
*/
if ((local & ADVERTISE_PAUSE_CAP) &&
(local & ADVERTISE_PAUSE_ASYM)){
if ((remote & LPA_PAUSE_ASYM) &&
!(remote & LPA_PAUSE_CAP))
pause_enab |= B44_FLAG_RX_PAUSE;
}
__b44_set_flow_ctrl(bp, pause_enab);