From 2b38f509c33eab1178d5736c06d4c84c20500dbc Mon Sep 17 00:00:00 2001 From: Qi Zhang Date: Mon, 11 Dec 2017 13:09:51 -0500 Subject: [PATCH] net/i40e: exclude LLDP packet count When use port stats register to calculate the packet count, LLDP packets are counted in statistics which is not expected, the patch exclude this number from total number. Fixes: 763de290cbd1 ("net/i40e: fix packet count for PF") Cc: stable@dpdk.org Signed-off-by: Qi Zhang Acked-by: Beilei Xing --- drivers/net/i40e/i40e_ethdev.c | 60 +++++++++++++++++++++++++++++++--- 1 file changed, 56 insertions(+), 4 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index c9551b0833..94b89e4e73 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -2518,6 +2518,22 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct i40e_hw *hw) pf->offset_loaded, &pf->internal_stats_offset.rx_broadcast, &pf->internal_stats.rx_broadcast); + /* Get total internal tx packet count */ + i40e_stat_update_48(hw, I40E_GLV_UPTCH(hw->port), + I40E_GLV_UPTCL(hw->port), + pf->offset_loaded, + &pf->internal_stats_offset.tx_unicast, + &pf->internal_stats.tx_unicast); + i40e_stat_update_48(hw, I40E_GLV_MPTCH(hw->port), + I40E_GLV_MPTCL(hw->port), + pf->offset_loaded, + &pf->internal_stats_offset.tx_multicast, + &pf->internal_stats.tx_multicast); + i40e_stat_update_48(hw, I40E_GLV_BPTCH(hw->port), + I40E_GLV_BPTCL(hw->port), + pf->offset_loaded, + &pf->internal_stats_offset.tx_broadcast, + &pf->internal_stats.tx_broadcast); /* exclude CRC size */ pf->internal_stats.rx_bytes -= (pf->internal_stats.rx_unicast + @@ -2547,16 +2563,32 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct i40e_hw *hw) ns->eth.rx_bytes -= (ns->eth.rx_unicast + ns->eth.rx_multicast + ns->eth.rx_broadcast) * ETHER_CRC_LEN; - /* Workaround: it is possible I40E_GLV_GORCH[H/L] is updated before - * I40E_GLPRT_GORCH[H/L], so there is a small window that cause negtive + /* exclude internal rx bytes + * Workaround: it is possible I40E_GLV_GORCH[H/L] is updated before + * I40E_GLPRT_GORCH[H/L], so there is a small window that cause negative * value. + * same to I40E_GLV_UPRC[H/L], I40E_GLV_MPRC[H/L], I40E_GLV_BPRC[H/L]. */ if (ns->eth.rx_bytes < pf->internal_stats.rx_bytes) ns->eth.rx_bytes = 0; - /* exlude internal rx bytes */ else ns->eth.rx_bytes -= pf->internal_stats.rx_bytes; + if (ns->eth.rx_unicast < pf->internal_stats.rx_unicast) + ns->eth.rx_unicast = 0; + else + ns->eth.rx_unicast -= pf->internal_stats.rx_unicast; + + if (ns->eth.rx_multicast < pf->internal_stats.rx_multicast) + ns->eth.rx_multicast = 0; + else + ns->eth.rx_multicast -= pf->internal_stats.rx_multicast; + + if (ns->eth.rx_broadcast < pf->internal_stats.rx_broadcast) + ns->eth.rx_broadcast = 0; + else + ns->eth.rx_broadcast -= pf->internal_stats.rx_broadcast; + i40e_stat_update_32(hw, I40E_GLPRT_RDPC(hw->port), pf->offset_loaded, &os->eth.rx_discards, &ns->eth.rx_discards); @@ -2585,12 +2617,32 @@ i40e_read_stats_registers(struct i40e_pf *pf, struct i40e_hw *hw) ns->eth.tx_bytes -= (ns->eth.tx_unicast + ns->eth.tx_multicast + ns->eth.tx_broadcast) * ETHER_CRC_LEN; - /* exclude internal tx bytes */ + /* exclude internal tx bytes + * Workaround: it is possible I40E_GLV_GOTCH[H/L] is updated before + * I40E_GLPRT_GOTCH[H/L], so there is a small window that cause negative + * value. + * same to I40E_GLV_UPTC[H/L], I40E_GLV_MPTC[H/L], I40E_GLV_BPTC[H/L]. + */ if (ns->eth.tx_bytes < pf->internal_stats.tx_bytes) ns->eth.tx_bytes = 0; else ns->eth.tx_bytes -= pf->internal_stats.tx_bytes; + if (ns->eth.tx_unicast < pf->internal_stats.tx_unicast) + ns->eth.tx_unicast = 0; + else + ns->eth.tx_unicast -= pf->internal_stats.tx_unicast; + + if (ns->eth.tx_multicast < pf->internal_stats.tx_multicast) + ns->eth.tx_multicast = 0; + else + ns->eth.tx_multicast -= pf->internal_stats.tx_multicast; + + if (ns->eth.tx_broadcast < pf->internal_stats.tx_broadcast) + ns->eth.tx_broadcast = 0; + else + ns->eth.tx_broadcast -= pf->internal_stats.tx_broadcast; + /* GLPRT_TEPC not supported */ /* additional port specific stats */ -- 2.20.1