From 6a8e93db98e36b5b3b8c10b9adae073d6bd1062a Mon Sep 17 00:00:00 2001 From: Mitch Williams Date: Thu, 5 Jun 2014 00:09:17 +0000 Subject: i40evf: return more useful error information When verifying the API version (which is the first time the driver communicates with the firmware and thus the PF driver), there are many ways in which a failure can occur. There may be an error from the firmware, there may be unresponsive firmware, there may be an error from the PF driver, etc, etc. Make this function return more useful information, instead of just -EIO. Propagate FW errors back to the caller, and log a message if the PF sends an invalid reply. Change-ID: I3e9135a2b80f7acdb855f62f12b2b2668c9a8951 Signed-off-by: Mitch Williams Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c') diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c index 2dc0bac76717..0ed2ad7e4eee 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c @@ -80,8 +80,9 @@ int i40evf_send_api_ver(struct i40evf_adapter *adapter) * @adapter: adapter structure * * Compare API versions with the PF. Must be called after admin queue is - * initialized. Returns 0 if API versions match, -EIO if - * they do not, or I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty. + * initialized. Returns 0 if API versions match, -EIO if they do not, + * I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors + * from the firmware are propagated. **/ int i40evf_verify_api_ver(struct i40evf_adapter *adapter) { @@ -102,13 +103,13 @@ int i40evf_verify_api_ver(struct i40evf_adapter *adapter) goto out_alloc; err = (i40e_status)le32_to_cpu(event.desc.cookie_low); - if (err) { - err = -EIO; + if (err) goto out_alloc; - } if ((enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high) != I40E_VIRTCHNL_OP_VERSION) { + dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n", + le32_to_cpu(event.desc.cookie_high)); err = -EIO; goto out_alloc; } -- cgit v1.2.3 From fc86a970a4628e85242d81255dd789da35f344b4 Mon Sep 17 00:00:00 2001 From: Mitch Williams Date: Wed, 4 Jun 2014 20:41:38 +0000 Subject: i40evf: set flags before sending message MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In some circumstances, the firmware could beat us to the punch, and the reply from the PF would come back before we were able to properly modify the aq_pending and aq_required flags. This would mess up the flags and put the driver in an indeterminate state, much like Schrödinger's cat. However, unlike the cat, the driver is definitely dead. To fix this, simply set the flags before sending the request to the AQ. This way, it won't matter if the interrupt comes back too soon. Change-ID: I9784655e475675ebcb3140cc7f36f4a96aaadce5 Signed-off-by: Mitch Williams Signed-off-by: Jeff Kirsher --- .../net/ethernet/intel/i40evf/i40evf_virtchnl.c | 33 +++++++++++----------- 1 file changed, 16 insertions(+), 17 deletions(-) (limited to 'drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c') diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c index 0ed2ad7e4eee..66d12f5b4ca8 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c @@ -248,11 +248,11 @@ void i40evf_configure_queues(struct i40evf_adapter *adapter) vqpi++; } + adapter->aq_pending |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; + adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES; i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES, (u8 *)vqci, len); kfree(vqci); - adapter->aq_pending |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; - adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES; } /** @@ -275,10 +275,10 @@ void i40evf_enable_queues(struct i40evf_adapter *adapter) vqs.vsi_id = adapter->vsi_res->vsi_id; vqs.tx_queues = (1 << adapter->vsi_res->num_queue_pairs) - 1; vqs.rx_queues = vqs.tx_queues; - i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES, - (u8 *)&vqs, sizeof(vqs)); adapter->aq_pending |= I40EVF_FLAG_AQ_ENABLE_QUEUES; adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES; + i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES, + (u8 *)&vqs, sizeof(vqs)); } /** @@ -301,10 +301,10 @@ void i40evf_disable_queues(struct i40evf_adapter *adapter) vqs.vsi_id = adapter->vsi_res->vsi_id; vqs.tx_queues = (1 << adapter->vsi_res->num_queue_pairs) - 1; vqs.rx_queues = vqs.tx_queues; - i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES, - (u8 *)&vqs, sizeof(vqs)); adapter->aq_pending |= I40EVF_FLAG_AQ_DISABLE_QUEUES; adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES; + i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES, + (u8 *)&vqs, sizeof(vqs)); } /** @@ -352,11 +352,11 @@ void i40evf_map_queues(struct i40evf_adapter *adapter) vimi->vecmap[v_idx].txq_map = 0; vimi->vecmap[v_idx].rxq_map = 0; + adapter->aq_pending |= I40EVF_FLAG_AQ_MAP_VECTORS; + adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS; i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP, (u8 *)vimi, len); kfree(vimi); - adapter->aq_pending |= I40EVF_FLAG_AQ_MAP_VECTORS; - adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS; } /** @@ -413,12 +413,11 @@ void i40evf_add_ether_addrs(struct i40evf_adapter *adapter) f->add = false; } } + adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; + adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER; i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS, (u8 *)veal, len); kfree(veal); - adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; - adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER; - } /** @@ -475,11 +474,11 @@ void i40evf_del_ether_addrs(struct i40evf_adapter *adapter) kfree(f); } } + adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; + adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER; i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS, (u8 *)veal, len); kfree(veal); - adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; - adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER; } /** @@ -536,10 +535,10 @@ void i40evf_add_vlans(struct i40evf_adapter *adapter) f->add = false; } } - i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len); - kfree(vvfl); adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER; + i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len); + kfree(vvfl); } /** @@ -597,10 +596,10 @@ void i40evf_del_vlans(struct i40evf_adapter *adapter) kfree(f); } } - i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len); - kfree(vvfl); adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER; + i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len); + kfree(vvfl); } /** -- cgit v1.2.3