[PATCH net-next] cxgb4: Setup FW queues before registering netdev

[PATCH net-next] cxgb4: Setup FW queues before registering netdev

[Ganesh Goudar]

From: Arjun Vynipadath <arjun@chelsio.com>

When NetworkManager is enabled, there are chances that interface up
is called even before probe completes. This means we have not yet
allocated the FW sge queues, hence rest of ingress queue allocation
wont be proper. Fix this by calling setup_fw_sge_queues() before
register_netdev().

Fixes: 0fbc81b3ad51 ('chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ULD's')
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index c4e0e47..8f733ee 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -841,8 +841,6 @@ static int setup_fw_sge_queues(struct adapter *adap)
 
 	err = t4_sge_alloc_rxq(adap, &s->fw_evtq, true, adap->port[0],
 			       adap->msi_idx, NULL, fwevtq_handler, NULL, -1);
-	if (err)
-		t4_free_sge_resources(adap);
 	return err;
 }
 
@@ -5750,6 +5748,13 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (err)
 		goto out_free_dev;
 
+	err = setup_fw_sge_queues(adapter);
+	if (err) {
+		dev_err(adapter->pdev_dev,
+			"FW sge queue allocation failed, err %d", err);
+		goto out_free_dev;
+	}
+
 	/*
 	 * The card is now ready to go.  If any errors occur during device
 	 * registration we do not fail the whole card but rather proceed only
@@ -5798,10 +5803,10 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		cxgb4_ptp_init(adapter);
 
 	print_adapter_info(adapter);
-	setup_fw_sge_queues(adapter);
 	return 0;
 
  out_free_dev:
+	t4_free_sge_resources(adapter);
 	free_some_resources(adapter);
 	if (adapter->flags & USING_MSIX)
 		free_msix_info(adapter);
-- 
2.1.0

Re: [PATCH net-next] cxgb4: Setup FW queues before registering netdev

[David Miller]

From: Ganesh Goudar <ganeshgr@chelsio.com>
Date: Fri, 23 Mar 2018 15:25:10 +0530

> From: Arjun Vynipadath <arjun@chelsio.com>
> 
> When NetworkManager is enabled, there are chances that interface up
> is called even before probe completes. This means we have not yet
> allocated the FW sge queues, hence rest of ingress queue allocation
> wont be proper. Fix this by calling setup_fw_sge_queues() before
> register_netdev().
> 
> Fixes: 0fbc81b3ad51 ('chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ULD's')
> Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
> Signed-off-by: Casey Leedom <leedom@chelsio.com>
> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>

Applied, thank you.