From b98deb2f9803849fd0db714ea9f27aa18f3d9103 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 28 Oct 2022 15:21:40 -0700 Subject: net: systemport: Add support for RDMA overflow statistic counter RDMA overflows can happen if the Ethernet controller does not have enough bandwidth allocated at the memory controller level, report RDMA overflows and deal with saturation, similar to the RBUF overflow counter. Signed-off-by: Florian Fainelli Link: https://lore.kernel.org/r/20221028222141.3208429-1-f.fainelli@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/broadcom/bcmsysport.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c') diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index f8b1adc389b3..38d0cdaf22a5 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -295,6 +295,8 @@ static const struct bcm_sysport_stats bcm_sysport_gstrings_stats[] = { /* RBUF misc statistics */ STAT_RBUF("rbuf_ovflow_cnt", mib.rbuf_ovflow_cnt, RBUF_OVFL_DISC_CNTR), STAT_RBUF("rbuf_err_cnt", mib.rbuf_err_cnt, RBUF_ERR_PKT_CNTR), + /* RDMA misc statistics */ + STAT_RDMA("rdma_ovflow_cnt", mib.rdma_ovflow_cnt, RDMA_OVFL_DISC_CNTR), STAT_MIB_SOFT("alloc_rx_buff_failed", mib.alloc_rx_buff_failed), STAT_MIB_SOFT("rx_dma_failed", mib.rx_dma_failed), STAT_MIB_SOFT("tx_dma_failed", mib.tx_dma_failed), @@ -333,6 +335,7 @@ static inline bool bcm_sysport_lite_stat_valid(enum bcm_sysport_stat_type type) case BCM_SYSPORT_STAT_NETDEV64: case BCM_SYSPORT_STAT_RXCHK: case BCM_SYSPORT_STAT_RBUF: + case BCM_SYSPORT_STAT_RDMA: case BCM_SYSPORT_STAT_SOFT: return true; default: @@ -436,6 +439,14 @@ static void bcm_sysport_update_mib_counters(struct bcm_sysport_priv *priv) if (val == ~0) rbuf_writel(priv, 0, s->reg_offset); break; + case BCM_SYSPORT_STAT_RDMA: + if (!priv->is_lite) + continue; + + val = rdma_readl(priv, s->reg_offset); + if (val == ~0) + rdma_writel(priv, 0, s->reg_offset); + break; } j += s->stat_sizeof; -- cgit