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ice: initialize cached_phctime when creating Rx rings 

When we create new Rx rings, the cached_phctime field is zero initialized.
This could result in incorrect timestamp reporting due to the cached value
not yet being updated. Although a background task will periodically update
the cached value, ensure it matches the existing cached value in the PF
structure at ring initialization.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Jacob Keller 2022-07-27 16:15:58 -07:00 committed by Tony Nguyen
parent b3b173745c
commit cf6b82fd3f
2 changed files with 2 additions and 0 deletions
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1
drivers/net/ethernet/intel/ice/ice_ethtool.c
View File

@ -2885,6 +2885,7 @@ process_rx:
/* clone ring and setup updated count */ /* clone ring and setup updated count */
rx_rings[i] = *vsi->rx_rings[i]; rx_rings[i] = *vsi->rx_rings[i];
rx_rings[i].count = new_rx_cnt; rx_rings[i].count = new_rx_cnt;
rx_rings[i].cached_phctime = pf->ptp.cached_phc_time;
rx_rings[i].desc = NULL; rx_rings[i].desc = NULL;
rx_rings[i].rx_buf = NULL; rx_rings[i].rx_buf = NULL;
/* this is to allow wr32 to have something to write to /* this is to allow wr32 to have something to write to

1
drivers/net/ethernet/intel/ice/ice_lib.c
View File

@ -1522,6 +1522,7 @@ static int ice_vsi_alloc_rings(struct ice_vsi *vsi)
ring->netdev = vsi->netdev; ring->netdev = vsi->netdev;
ring->dev = dev; ring->dev = dev;
ring->count = vsi->num_rx_desc; ring->count = vsi->num_rx_desc;
ring->cached_phctime = pf->ptp.cached_phc_time;
WRITE_ONCE(vsi->rx_rings[i], ring); WRITE_ONCE(vsi->rx_rings[i], ring);
} }