net/ice: fix bytes statistics

This patch fixed the issue that rx/tx 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>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 7dd3fcd..a4a0390 100644 (file)
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -4252,6 +4252,13 @@ 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 (vsi->offset_loaded) {
+               if (ICE_RXTX_BYTES_LOW(vsi->old_rx_bytes) > nes->rx_bytes)
+                       nes->rx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
+               nes->rx_bytes += ICE_RXTX_BYTES_HIGH(vsi->old_rx_bytes);
+       }
+       vsi->old_rx_bytes = nes->rx_bytes;
        /* exclude CRC bytes */
        nes->rx_bytes -= (nes->rx_unicast + nes->rx_multicast +
                          nes->rx_broadcast) * RTE_ETHER_CRC_LEN;
@@ -4278,6 +4285,13 @@ ice_update_vsi_stats(struct ice_vsi *vsi)
        /* GLV_TDPC not supported */
        ice_stat_update_32(hw, GLV_TEPC(idx), vsi->offset_loaded,
                           &oes->tx_errors, &nes->tx_errors);
+       /* enlarge the limitation when tx_bytes overflowed */
+       if (vsi->offset_loaded) {
+               if (ICE_RXTX_BYTES_LOW(vsi->old_tx_bytes) > nes->tx_bytes)
+                       nes->tx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
+               nes->tx_bytes += ICE_RXTX_BYTES_HIGH(vsi->old_tx_bytes);
+       }
+       vsi->old_tx_bytes = nes->tx_bytes;
        vsi->offset_loaded = true;
 
        PMD_DRV_LOG(DEBUG, "************** VSI[%u] stats start **************",
@@ -4325,6 +4339,13 @@ 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 (pf->offset_loaded) {
+               if (ICE_RXTX_BYTES_LOW(pf->old_rx_bytes) > ns->eth.rx_bytes)
+                       ns->eth.rx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
+               ns->eth.rx_bytes += ICE_RXTX_BYTES_HIGH(pf->old_rx_bytes);
+       }
+       pf->old_rx_bytes = ns->eth.rx_bytes;
 
        /* Workaround: CRC size should not be included in byte statistics,
         * so subtract RTE_ETHER_CRC_LEN from the byte counter for each rx
@@ -4355,6 +4376,13 @@ ice_read_stats_registers(struct ice_pf *pf, struct ice_hw *hw)
                           GLPRT_BPTCL(hw->port_info->lport),
                           pf->offset_loaded, &os->eth.tx_broadcast,
                           &ns->eth.tx_broadcast);
+       /* enlarge the limitation when tx_bytes overflowed */
+       if (pf->offset_loaded) {
+               if (ICE_RXTX_BYTES_LOW(pf->old_tx_bytes) > ns->eth.tx_bytes)
+                       ns->eth.tx_bytes += (uint64_t)1 << ICE_40_BIT_WIDTH;
+               ns->eth.tx_bytes += ICE_RXTX_BYTES_HIGH(pf->old_tx_bytes);
+       }
+       pf->old_tx_bytes = ns->eth.tx_bytes;
        ns->eth.tx_bytes -= (ns->eth.tx_unicast + ns->eth.tx_multicast +
                             ns->eth.tx_broadcast) * RTE_ETHER_CRC_LEN;
 

diff --git a/drivers/net/ice/ice_ethdev.h b/drivers/net/ice/ice_ethdev.h
index 2bff735..87984ef 100644 (file)
--- a/drivers/net/ice/ice_ethdev.h
+++ b/drivers/net/ice/ice_ethdev.h
@@ -133,6 +133,9 @@
 #define ICE_ETH_OVERHEAD \
        (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + ICE_VLAN_TAG_SIZE * 2)
 
+#define ICE_RXTX_BYTES_HIGH(bytes) ((bytes) & ~ICE_40_BIT_MASK)
+#define ICE_RXTX_BYTES_LOW(bytes) ((bytes) & ICE_40_BIT_MASK)
+
 /* DDP package type */
 enum ice_pkg_type {
        ICE_PKG_TYPE_UNKNOWN,
@@ -248,6 +251,8 @@ struct ice_vsi {
        struct ice_eth_stats eth_stats_offset;
        struct ice_eth_stats eth_stats;
        bool offset_loaded;
+       uint64_t old_rx_bytes;
+       uint64_t old_tx_bytes;
 };
 
 enum proto_xtr_type {
@@ -391,6 +396,8 @@ struct ice_pf {
        struct ice_parser_list perm_parser_list;
        struct ice_parser_list dist_parser_list;
        bool init_link_up;
+       uint64_t old_rx_bytes;
+       uint64_t old_tx_bytes;
 };
 
 #define ICE_MAX_QUEUE_NUM  2048