bnx2x: Stop management traffic in loopback test

Since management traffic cannot go on the wire while configured to loopback,
simply stop it to avoid race condition when the MAC is set to loopback in the
middle of a packet

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 6c67be679764..177cb467ba90 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -9691,8 +9691,15 @@ static void bnx2x_self_test(struct net_device *dev,
                 etest->flags &= ~ETH_TEST_FL_OFFLINE;
 
         if (etest->flags & ETH_TEST_FL_OFFLINE) {
+                int port = BP_PORT(bp);
+                u32 val;
                 u8 link_up;
 
+                /* save current value of input enable for TX port IF */
+                val = REG_RD(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4);
+                /* disable input for TX port IF */
+                REG_WR(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4, 0);
+
                 link_up = bp->link_vars.link_up;
                 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
                 bnx2x_nic_load(bp, LOAD_DIAG);
@@ -9712,6 +9719,10 @@ static void bnx2x_self_test(struct net_device *dev,
                         etest->flags |= ETH_TEST_FL_FAILED;
 
                 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
+
+                /* restore input for TX port IF */
+                REG_WR(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4, val);
+
                 bnx2x_nic_load(bp, LOAD_NORMAL);
                 /* wait until link state is restored */
                 bnx2x_wait_for_link(bp, link_up);