diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-03-01 14:18:11 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-02 00:34:47 +0300 |
| commit | c646d10dda2dcde82c6ce5a474522621ab2b8b19 (patch) | |
| tree | d1ada4a270daf0ccd61130f8e9614d8957f07166 /drivers/net/ethernet/freescale/enetc/enetc_vf.c | |
| parent | 8bd2a05527349c8627d2b9795d3c7a6f76033676 (diff) | |
| download | linux-c646d10dda2dcde82c6ce5a474522621ab2b8b19.tar.xz | |
net: enetc: don't overwrite the RSS indirection table when initializing
After the blamed patch, all RX traffic gets hashed to CPU 0 because the
hashing indirection table set up in:
enetc_pf_probe
-> enetc_alloc_si_resources
-> enetc_configure_si
-> enetc_setup_default_rss_table
is overwritten later in:
enetc_pf_probe
-> enetc_init_port_rss_memory
which zero-initializes the entire port RSS table in order to avoid ECC errors.
The trouble really is that enetc_init_port_rss_memory really neads
enetc_alloc_si_resources to be called, because it depends upon
enetc_alloc_cbdr and enetc_setup_cbdr. But that whole enetc_configure_si
thing could have been better thought out, it has nothing to do in a
function called "alloc_si_resources", especially since its counterpart,
"free_si_resources", does nothing to unwind the configuration of the SI.
The point is, we need to pull out enetc_configure_si out of
enetc_alloc_resources, and move it after enetc_init_port_rss_memory.
This allows us to set up the default RSS indirection table after
initializing the memory.
Fixes: 07bf34a50e32 ("net: enetc: initialize the RFS and RSS memories")
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/enetc_vf.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc_vf.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_vf.c b/drivers/net/ethernet/freescale/enetc/enetc_vf.c index 39c1a09e69a9..9b755a84c2d6 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_vf.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_vf.c @@ -171,6 +171,12 @@ static int enetc_vf_probe(struct pci_dev *pdev, goto err_alloc_si_res; } + err = enetc_configure_si(priv); + if (err) { + dev_err(&pdev->dev, "Failed to configure SI\n"); + goto err_config_si; + } + err = enetc_alloc_msix(priv); if (err) { dev_err(&pdev->dev, "MSIX alloc failed\n"); @@ -187,6 +193,7 @@ static int enetc_vf_probe(struct pci_dev *pdev, err_reg_netdev: enetc_free_msix(priv); +err_config_si: err_alloc_msix: enetc_free_si_resources(priv); err_alloc_si_res: |