[1/2] net/ice: fix incorrect Rx bytes statistics
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Commit Message
This patch fixed the issue that rx_bytes overflowed
on 40 bit limitation by enlarging the limitation.
Fixes: a37bde56314d ("net/ice: support statistics")
Cc: stable@dpdk.org
Signed-off-by: Junyu Jiang <junyux.jiang@intel.com>
---
drivers/net/ice/ice_ethdev.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
@@ -4143,6 +4143,10 @@ ice_update_vsi_stats(struct ice_vsi *vsi)
struct ice_eth_stats *nes = &vsi->eth_stats;
struct ice_hw *hw = ICE_VSI_TO_HW(vsi);
int idx = rte_le_to_cpu_16(vsi->vsi_id);
+ uint64_t old_rx_bytes = nes->rx_bytes;
+
+ old_rx_bytes += (nes->rx_unicast + nes->rx_multicast +
+ nes->rx_broadcast) * RTE_ETHER_CRC_LEN;
ice_stat_update_40(hw, GLV_GORCH(idx), GLV_GORCL(idx),
vsi->offset_loaded, &oes->rx_bytes,
@@ -4156,6 +4160,9 @@ ice_update_vsi_stats(struct ice_vsi *vsi)
ice_stat_update_40(hw, GLV_BPRCH(idx), GLV_BPRCL(idx),
vsi->offset_loaded, &oes->rx_broadcast,
&nes->rx_broadcast);
+ /* enlarge the limitation when rx_bytes overflowed */
+ if (old_rx_bytes > nes->rx_bytes && vsi->offset_loaded)
+ nes->rx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
/* exclude CRC bytes */
nes->rx_bytes -= (nes->rx_unicast + nes->rx_multicast +
nes->rx_broadcast) * RTE_ETHER_CRC_LEN;
@@ -4208,6 +4215,10 @@ ice_read_stats_registers(struct ice_pf *pf, struct ice_hw *hw)
{
struct ice_hw_port_stats *ns = &pf->stats; /* new stats */
struct ice_hw_port_stats *os = &pf->stats_offset; /* old stats */
+ uint64_t old_rx_bytes = ns->eth.rx_bytes;
+
+ old_rx_bytes += (ns->eth.rx_unicast + ns->eth.rx_multicast +
+ ns->eth.rx_broadcast) * RTE_ETHER_CRC_LEN;
/* Get statistics of struct ice_eth_stats */
ice_stat_update_40(hw, GLPRT_GORCH(hw->port_info->lport),
@@ -4229,6 +4240,9 @@ ice_read_stats_registers(struct ice_pf *pf, struct ice_hw *hw)
ice_stat_update_32(hw, PRTRPB_RDPC,
pf->offset_loaded, &os->eth.rx_discards,
&ns->eth.rx_discards);
+ /* enlarge the limitation when rx_bytes overflowed */
+ if (old_rx_bytes > ns->eth.rx_bytes && pf->offset_loaded)
+ ns->eth.rx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
/* Workaround: CRC size should not be included in byte statistics,
* so subtract RTE_ETHER_CRC_LEN from the byte counter for each rx