From e81a8068dbffda12818f37be3ba76518a5d591b4 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Wed, 31 Mar 2021 02:00:51 +0000 Subject: [PATCH] ibmvnic: add some debugs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit stable inclusion from stable-5.10.26 commit f8ba6913c40af93930d854da75a739f95c8b1fda bugzilla: 51363 -------------------------------- [ Upstream commit 38bd5cec76e2282986b1bf2f8e7d2d05ffe68b22 ] We sometimes run into situations where a soft/hard reset of the adapter takes a long time or fails to complete. Having additional messages that include important adapter state info will hopefully help understand what is happening, reduce the guess work and minimize requests to reproduce problems with debug patches. Signed-off-by: Sukadev Bhattiprolu Link: https://lore.kernel.org/r/20201205022235.2414110-1-sukadev@linux.ibm.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin Signed-off-by: Chen Jun Acked-by:  Weilong Chen Signed-off-by: Zheng Zengkai --- drivers/net/ethernet/ibm/ibmvnic.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index f184f4a79cc3..1207007d8e46 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -409,6 +409,8 @@ static void replenish_pools(struct ibmvnic_adapter *adapter) if (adapter->rx_pool[i].active) replenish_rx_pool(adapter, &adapter->rx_pool[i]); } + + netdev_dbg(adapter->netdev, "Replenished %d pools\n", i); } static void release_stats_buffers(struct ibmvnic_adapter *adapter) @@ -914,6 +916,7 @@ static int ibmvnic_login(struct net_device *netdev) __ibmvnic_set_mac(netdev, adapter->mac_addr); + netdev_dbg(netdev, "[S:%d] Login succeeded\n", adapter->state); return 0; } @@ -1343,6 +1346,10 @@ static int ibmvnic_close(struct net_device *netdev) struct ibmvnic_adapter *adapter = netdev_priv(netdev); int rc; + netdev_dbg(netdev, "[S:%d FOP:%d FRR:%d] Closing\n", + adapter->state, adapter->failover_pending, + adapter->force_reset_recovery); + /* If device failover is pending, just set device state and return. * Device operation will be handled by reset routine. */ @@ -1937,8 +1944,10 @@ static int do_reset(struct ibmvnic_adapter *adapter, struct net_device *netdev = adapter->netdev; int i, rc; - netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n", - rwi->reset_reason); + netdev_dbg(adapter->netdev, + "[S:%d FOP:%d] Reset reason %d, reset_state %d\n", + adapter->state, adapter->failover_pending, + rwi->reset_reason, reset_state); rtnl_lock(); /* @@ -2097,6 +2106,8 @@ static int do_reset(struct ibmvnic_adapter *adapter, adapter->state = reset_state; rtnl_unlock(); + netdev_dbg(adapter->netdev, "[S:%d FOP:%d] Reset done, rc %d\n", + adapter->state, adapter->failover_pending, rc); return rc; } @@ -2166,6 +2177,8 @@ static int do_hard_reset(struct ibmvnic_adapter *adapter, /* restore adapter state if reset failed */ if (rc) adapter->state = reset_state; + netdev_dbg(adapter->netdev, "[S:%d FOP:%d] Hard reset done, rc %d\n", + adapter->state, adapter->failover_pending, rc); return rc; } @@ -2275,6 +2288,11 @@ static void __ibmvnic_reset(struct work_struct *work) } clear_bit_unlock(0, &adapter->resetting); + + netdev_dbg(adapter->netdev, + "[S:%d FRR:%d WFR:%d] Done processing resets\n", + adapter->state, adapter->force_reset_recovery, + adapter->wait_for_reset); } static void __ibmvnic_delayed_reset(struct work_struct *work) @@ -2320,7 +2338,8 @@ static int ibmvnic_reset(struct ibmvnic_adapter *adapter, list_for_each(entry, &adapter->rwi_list) { tmp = list_entry(entry, struct ibmvnic_rwi, list); if (tmp->reset_reason == reason) { - netdev_dbg(netdev, "Skipping matching reset\n"); + netdev_dbg(netdev, "Skipping matching reset, reason=%d\n", + reason); spin_unlock_irqrestore(&adapter->rwi_lock, flags); ret = EBUSY; goto err; -- GitLab