[dpdk-dev] [PATCH] net/i40e: exclude internal packet's byte count

[Qi Zhang]

Tx/Rx byte counts of internal managed packet should be
exluded from the total rx/tx bytes.

Fixes: 9aace75fc82e ("i40e: fix statistics")
Cc: sta...@dpdk.org

Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 13 +++++++++++--
 drivers/net/i40e/i40e_ethdev.h |  5 +++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 4c49673..c8802f2 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2379,6 +2379,15 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct 
i40e_hw *hw)
        struct i40e_hw_port_stats *ns = &pf->stats; /* new stats */
        struct i40e_hw_port_stats *os = &pf->stats_offset; /* old stats */
 
+       /* Get rx/tx bytes of internal transfer packets */
+       i40e_stat_update_48(hw, I40E_GLV_GORCH(hw->port), 
I40E_GLV_GORCL(hw->port),
+                       pf->offset_loaded, &pf->internal_rx_bytes_offset,
+                       &pf->internal_rx_bytes);
+
+       i40e_stat_update_48(hw, I40E_GLV_GOTCH(hw->port), 
I40E_GLV_GOTCL(hw->port),
+                       pf->offset_loaded, &pf->internal_tx_bytes_offset,
+                       &pf->internal_tx_bytes);
+
        /* Get statistics of struct i40e_eth_stats */
        i40e_stat_update_48(hw, I40E_GLPRT_GORCH(hw->port),
                            I40E_GLPRT_GORCL(hw->port),
@@ -2400,7 +2409,7 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct 
i40e_hw *hw)
         * so subtract ETHER_CRC_LEN from the byte counter for each rx packet.
         */
        ns->eth.rx_bytes -= (ns->eth.rx_unicast + ns->eth.rx_multicast +
-               ns->eth.rx_broadcast) * ETHER_CRC_LEN;
+               ns->eth.rx_broadcast) * ETHER_CRC_LEN + pf->internal_rx_bytes;
 
        i40e_stat_update_32(hw, I40E_GLPRT_RDPC(hw->port),
                            pf->offset_loaded, &os->eth.rx_discards,
@@ -2428,7 +2437,7 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct 
i40e_hw *hw)
                            pf->offset_loaded, &os->eth.tx_broadcast,
                            &ns->eth.tx_broadcast);
        ns->eth.tx_bytes -= (ns->eth.tx_unicast + ns->eth.tx_multicast +
-               ns->eth.tx_broadcast) * ETHER_CRC_LEN;
+               ns->eth.tx_broadcast) * ETHER_CRC_LEN + pf->internal_tx_bytes;
        /* GLPRT_TEPC not supported */
 
        /* additional port specific stats */
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 2ff8282..b0d963c 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -639,6 +639,11 @@ struct i40e_pf {
 
        struct i40e_hw_port_stats stats_offset;
        struct i40e_hw_port_stats stats;
+       /* internal packet byte count, it should be excluded from the total */
+       uint64_t internal_rx_bytes;
+       uint64_t internal_tx_bytes;
+       uint64_t internal_rx_bytes_offset;
+       uint64_t internal_tx_bytes_offset;
        bool offset_loaded;
 
        struct rte_eth_dev_data *dev_data; /* Pointer to the device data */
-- 
2.7.4