sfc: Fix loopback self-test with separate_tx_channels=1

The loopback self-test iterates over all the TX queues of channel 0,
which is not very interesting when that's an RX-only channel.

Signed-off-by: Ben Hutchings <bhutchings@solarflre.com>

2 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 9df556c01b8e..cf772074145a 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -337,7 +337,8 @@ static int efx_fill_loopback_test(struct efx_nic *efx,
                                   unsigned int test_index,
                                   struct ethtool_string *strings, u64 *data)
 {
-        struct efx_channel *channel = efx_get_channel(efx, 0);
+        struct efx_channel *channel =
+                efx_get_channel(efx, efx->tx_channel_offset);
         struct efx_tx_queue *tx_queue;
 
         efx_for_each_channel_tx_queue(tx_queue, channel) {
diff --git a/drivers/net/ethernet/sfc/selftest.c b/drivers/net/ethernet/sfc/selftest.c
index 96068d15b601..ce72ae4f399f 100644
--- a/drivers/net/ethernet/sfc/selftest.c
+++ b/drivers/net/ethernet/sfc/selftest.c
@@ -614,7 +614,8 @@ static int efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
 {
         enum efx_loopback_mode mode;
         struct efx_loopback_state *state;
-        struct efx_channel *channel = efx_get_channel(efx, 0);
+        struct efx_channel *channel =
+                efx_get_channel(efx, efx->tx_channel_offset);
         struct efx_tx_queue *tx_queue;
         int rc = 0;