tg3: Nullify RSS for loopback test
The loopback test assumes all traffic goes to the first rx queue. There
is a 1 in 4 chance this won't be true if RSS is enabled though. This
patch reprograms the RSS indirection table to route all rx packets to
the first queue.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 4aecb0a..1f233c4 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -11269,6 +11269,15 @@
goto done;
}
+ if (tp->tg3_flags3 & TG3_FLG3_ENABLE_RSS) {
+ int i;
+
+ /* Reroute all rx packets to the 1st queue */
+ for (i = MAC_RSS_INDIR_TBL_0;
+ i < MAC_RSS_INDIR_TBL_0 + TG3_RSS_INDIR_TBL_SIZE; i += 4)
+ tw32(i, 0x0);
+ }
+
/* Turn off gphy autopowerdown. */
if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
tg3_phy_toggle_apd(tp, false);