leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net/mlx5e: Properly check if hairpin is possible between two functions

Browse Source 
The current check relies on function BDF addresses and can get
us wrong e.g when two VFs are assigned into a VM and the PCI
v-address is set by the hypervisor.

Fixes: 5c65c564c9 ('net/mlx5e: Support offloading TC NIC hairpin flows')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Alaa Hleihel <alaa@mellanox.com>
Tested-by: Alaa Hleihel <alaa@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz 2018-08-08 15:48:07 -07:00 committed by David S. Miller
parent b13f9c6364
commit 816f670623
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
View File

@ -1970,15 +1970,15 @@ static bool actions_match_supported(struct mlx5e_priv *priv,
static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
{
struct mlx5_core_dev *fmdev, *pmdev;
u16 func_id, peer_id;
u64 fsystem_guid, psystem_guid;
fmdev = priv->mdev;
pmdev = peer_priv->mdev;
func_id = (u16)((fmdev->pdev->bus->number << 8) | PCI_SLOT(fmdev->pdev->devfn));
peer_id = (u16)((pmdev->pdev->bus->number << 8) | PCI_SLOT(pmdev->pdev->devfn));
mlx5_query_nic_vport_system_image_guid(fmdev, &fsystem_guid);
mlx5_query_nic_vport_system_image_guid(pmdev, &psystem_guid);
return (func_id == peer_id);
return (fsystem_guid == psystem_guid);
}
static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,