From 4a85f09831329bc5a5e4b9bca3f3ecbffb78f858 Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Wed, 20 Apr 2011 07:57:37 +0000 Subject: [PATCH] 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 Reviewed-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/tg3.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 4aecb0a82e56..1f233c49b4f0 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -11269,6 +11269,15 @@ static int tg3_test_loopback(struct tg3 *tp) 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); -- 2.20.1