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* [PATCH] net/mlx5: support no host PF configuration
@ 2023-10-11  6:41 Jiawei Wang
  2024-09-27  7:11 ` Bing Zhao
                   ` (2 more replies)
  0 siblings, 3 replies; 5+ messages in thread
From: Jiawei Wang @ 2023-10-11  6:41 UTC (permalink / raw)
  To: suanmingm, xuemingl, viacheslavo; +Cc: dev, rasland

From: Xueming Li <xuemingl@nvidia.com>

In BlueField, a new firmware configuration option NUM_OF_PF=0 disables
PF on the x86 host side, no HPF on the ARM side, and the only RDMA port
on the ARM side is the bonding device(PF0). A device probe with devargs
of representor=pf[0-1]vf[...] will probe PF0 and PF1 one by one, and
it's possible that PF1 device scan results in no switch ports.

This patch supports the new configuration by allowing a PF scan with
empty switch ports.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index d5ef695e6d..75f53ade8e 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -2195,13 +2195,6 @@ mlx5_os_pci_probe_pf(struct mlx5_common_device *cdev,
 				     list[ns].info.master))
 				ns++;
 		}
-		if (!ns) {
-			DRV_LOG(ERR,
-				"Unable to recognize master/representors on the IB device with multiple ports.");
-			rte_errno = ENOENT;
-			ret = -rte_errno;
-			goto exit;
-		}
 	} else {
 		/*
 		 * The existence of several matching entries (nd > 1) means
-- 
2.18.1


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2024-10-28 13:12 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-10-11  6:41 [PATCH] net/mlx5: support no host PF configuration Jiawei Wang
2024-09-27  7:11 ` Bing Zhao
2024-10-28  9:35   ` Dariusz Sosnowski
2024-10-07 18:09 ` Stephen Hemminger
2024-10-28 13:12 ` Raslan Darawsheh

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