From 9d1aea62e45d447e7fc05d4e7f4e90f633e3abfc Mon Sep 17 00:00:00 2001 From: Neil Turton Date: Mon, 4 Apr 2011 13:46:23 +0100 Subject: [PATCH] sfc: Stop the TX queues during loopback self-tests If the TX queues are running during loopback self tests, host traffic gets looped back which causes the test to fail. Avoid restarting the TX queues after the port reset so that any packets sent by the host get held back until after the tests have completed. [bwh: Also wake all TX queues at the end of self-tests.] Signed-off-by: Ben Hutchings --- drivers/net/sfc/efx.c | 2 +- drivers/net/sfc/selftest.c | 2 ++ drivers/net/sfc/tx.c | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index d890679..0dc800b 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -1436,7 +1436,7 @@ static void efx_start_all(struct efx_nic *efx) * restart the transmit interface early so the watchdog timer stops */ efx_start_port(efx); - if (efx_dev_registered(efx)) + if (efx_dev_registered(efx) && !efx->port_inhibited) netif_tx_wake_all_queues(efx->net_dev); efx_for_each_channel(channel, efx) diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c index a0f49b3..8458084 100644 --- a/drivers/net/sfc/selftest.c +++ b/drivers/net/sfc/selftest.c @@ -770,6 +770,8 @@ int efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests, __efx_reconfigure_port(efx); mutex_unlock(&efx->mac_lock); + netif_tx_wake_all_queues(efx->net_dev); + return rc_test; } diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c index 1398019..d2c85df 100644 --- a/drivers/net/sfc/tx.c +++ b/drivers/net/sfc/tx.c @@ -435,7 +435,8 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index) * queue state. */ smp_mb(); if (unlikely(netif_tx_queue_stopped(tx_queue->core_txq)) && - likely(efx->port_enabled)) { + likely(efx->port_enabled) && + likely(!efx->port_inhibited)) { fill_level = tx_queue->insert_count - tx_queue->read_count; if (fill_level < EFX_TXQ_THRESHOLD(efx)) { EFX_BUG_ON_PARANOID(!efx_dev_registered(efx)); -- 2.7.4