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authorGary Zambrano <zambrano@broadcom.com>2006-04-10 15:02:21 -0400
committerJeff Garzik <jeff@garzik.org>2006-04-12 18:04:03 -0400
commit2b474cf53870abf1bbad631c3368b9efc9b5ba9d (patch)
tree3dc14351bf455c345c463573c0cd7369e05f5631 /drivers
parent4be5de25259de21894df5e2fecc30da8252dee8c (diff)
[PATCH] b44: disable default tx pause
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/b44.c31
1 files changed, 12 insertions, 19 deletions
diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index c4e12b5cbb92..a67d537ccf49 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -410,25 +410,18 @@ static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
410 410
411static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote) 411static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
412{ 412{
413 u32 pause_enab = bp->flags & (B44_FLAG_TX_PAUSE | 413 u32 pause_enab = 0;
414 B44_FLAG_RX_PAUSE); 414
415 415 /* The driver supports only rx pause by default because
416 if (local & ADVERTISE_PAUSE_CAP) { 416 the b44 mac tx pause mechanism generates excessive
417 if (local & ADVERTISE_PAUSE_ASYM) { 417 pause frames.
418 if (remote & LPA_PAUSE_CAP) 418 Use ethtool to turn on b44 tx pause if necessary.
419 pause_enab |= (B44_FLAG_TX_PAUSE | 419 */
420 B44_FLAG_RX_PAUSE); 420 if ((local & ADVERTISE_PAUSE_CAP) &&
421 else if (remote & LPA_PAUSE_ASYM) 421 (local & ADVERTISE_PAUSE_ASYM)){
422 pause_enab |= B44_FLAG_RX_PAUSE; 422 if ((remote & LPA_PAUSE_ASYM) &&
423 } else { 423 !(remote & LPA_PAUSE_CAP))
424 if (remote & LPA_PAUSE_CAP) 424 pause_enab |= B44_FLAG_RX_PAUSE;
425 pause_enab |= (B44_FLAG_TX_PAUSE |
426 B44_FLAG_RX_PAUSE);
427 }
428 } else if (local & ADVERTISE_PAUSE_ASYM) {
429 if ((remote & LPA_PAUSE_CAP) &&
430 (remote & LPA_PAUSE_ASYM))
431 pause_enab |= B44_FLAG_TX_PAUSE;
432 } 425 }
433 426
434 __b44_set_flow_ctrl(bp, pause_enab); 427 __b44_set_flow_ctrl(bp, pause_enab);