[netdrvr] sfc: sfc: Add self-test support

Add a set of self-tests accessible thorugh ethtool.
Add hardware loopback and TX disable control code to support them.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 247629cee5aa..b57cc68058c0 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1732,7 +1732,8 @@ void falcon_drain_tx_fifo(struct efx_nic *efx)
         efx_oword_t temp;
         int count;
 
-        if (FALCON_REV(efx) < FALCON_REV_B0)
+        if ((FALCON_REV(efx) < FALCON_REV_B0) ||
+            (efx->loopback_mode != LOOPBACK_NONE))
                 return;
 
         falcon_read(efx, &temp, MAC0_CTRL_REG_KER);
@@ -2092,6 +2093,8 @@ static int falcon_probe_phy(struct efx_nic *efx)
                         efx->phy_type);
                 return -1;
         }
+
+        efx->loopback_modes = LOOPBACKS_10G_INTERNAL | efx->phy_op->loopbacks;
         return 0;
 }