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| author | MD Danish Anwar <danishanwar@ti.com> | 2023-10-12 09:46:26 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-14 03:32:19 +0300 |
| commit | 2c0d808f36cc6e0617f9dda055a6651c777a9d64 (patch) | |
| tree | 9620e407252b2005a245df9b37068a8c0be13eb8 /drivers/net/ethernet/ti/icssg/icssg_stats.c | |
| parent | a258c804aa8742763dce694b5e992d7ccf4294f2 (diff) | |
| download | linux-2c0d808f36cc6e0617f9dda055a6651c777a9d64.tar.xz | |
net: ti: icssg-prueth: Fix tx_total_bytes count
ICSSG HW stats on TX side considers 8 preamble bytes as data bytes. Due
to this the tx_bytes of ICSSG interface doesn't match the rx_bytes of the
link partner. There is no public errata available yet.
As a workaround to fix this, decrease tx_bytes by 8 bytes for every tx
frame.
Fixes: c1e10d5dc7a1 ("net: ti: icssg-prueth: Add ICSSG Stats")
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://lore.kernel.org/r/20231012064626.977466-1-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/ti/icssg/icssg_stats.c')
| -rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_stats.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethernet/ti/icssg/icssg_stats.c index bb0b33927e3b..3dbadddd7e35 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.c +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c @@ -9,6 +9,9 @@ #include "icssg_stats.h" #include <linux/regmap.h> +#define ICSSG_TX_PACKET_OFFSET 0xA0 +#define ICSSG_TX_BYTE_OFFSET 0xEC + static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */ 0xb18, /* Slice 1 stats start */ }; @@ -18,6 +21,7 @@ void emac_update_hardware_stats(struct prueth_emac *emac) struct prueth *prueth = emac->prueth; int slice = prueth_emac_slice(emac); u32 base = stats_base[slice]; + u32 tx_pkt_cnt = 0; u32 val; int i; @@ -29,7 +33,12 @@ void emac_update_hardware_stats(struct prueth_emac *emac) base + icssg_all_stats[i].offset, val); + if (icssg_all_stats[i].offset == ICSSG_TX_PACKET_OFFSET) + tx_pkt_cnt = val; + emac->stats[i] += val; + if (icssg_all_stats[i].offset == ICSSG_TX_BYTE_OFFSET) + emac->stats[i] -= tx_pkt_cnt * 8; } } |