diff options
| author | Jerin Jacob <jerin.jacob@caviumnetworks.com> | 2016-08-12 14:21:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-13 21:59:32 +0300 |
| commit | 3458c40d608ab7d3b2b591eb9b1f1b84502b55d2 (patch) | |
| tree | 3417896c57ccfc7b1a488f1e051ea08d65b3afd6 /drivers/net/ethernet/cavium/thunder/nic_main.c | |
| parent | ecae29cb15c1a9502bb24f44ff9b84075c0b1dcd (diff) | |
| download | linux-3458c40d608ab7d3b2b591eb9b1f1b84502b55d2.tar.xz | |
net: thunderx: Reset RXQ HW stats when interface is brought down
When SQ/TXQ is reclaimed i.e reset it's stats also automatically reset
by HW. This is not the case with RQ. Also VF doesn't have write access
to statistics counter registers. Hence a new Mbox msg is introduced which
supports resetting RQ, SQ and full Qset stats. Currently only RQ stats
are being reset using this mbox message.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/nic_main.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/nic_main.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index c706b2e31598..167291bba88a 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -793,6 +793,48 @@ static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk) return 0; } +/* Reset statistics counters */ +static int nic_reset_stat_counters(struct nicpf *nic, + int vf, struct reset_stat_cfg *cfg) +{ + int i, stat, qnum; + u64 reg_addr; + + for (i = 0; i < RX_STATS_ENUM_LAST; i++) { + if (cfg->rx_stat_mask & BIT(i)) { + reg_addr = NIC_PF_VNIC_0_127_RX_STAT_0_13 | + (vf << NIC_QS_ID_SHIFT) | + (i << 3); + nic_reg_write(nic, reg_addr, 0); + } + } + + for (i = 0; i < TX_STATS_ENUM_LAST; i++) { + if (cfg->tx_stat_mask & BIT(i)) { + reg_addr = NIC_PF_VNIC_0_127_TX_STAT_0_4 | + (vf << NIC_QS_ID_SHIFT) | + (i << 3); + nic_reg_write(nic, reg_addr, 0); + } + } + + for (i = 0; i <= 15; i++) { + qnum = i >> 1; + stat = i & 1 ? 1 : 0; + reg_addr = (vf << NIC_QS_ID_SHIFT) | + (qnum << NIC_Q_NUM_SHIFT) | (stat << 3); + if (cfg->rq_stat_mask & BIT(i)) { + reg_addr |= NIC_PF_QSET_0_127_RQ_0_7_STAT_0_1; + nic_reg_write(nic, reg_addr, 0); + } + if (cfg->sq_stat_mask & BIT(i)) { + reg_addr |= NIC_PF_QSET_0_127_SQ_0_7_STAT_0_1; + nic_reg_write(nic, reg_addr, 0); + } + } + return 0; +} + static void nic_enable_vf(struct nicpf *nic, int vf, bool enable) { int bgx, lmac; @@ -942,6 +984,9 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) case NIC_MBOX_MSG_LOOPBACK: ret = nic_config_loopback(nic, &mbx.lbk); break; + case NIC_MBOX_MSG_RESET_STAT_COUNTER: + ret = nic_reset_stat_counters(nic, vf, &mbx.reset_stat); + break; default: dev_err(&nic->pdev->dev, "Invalid msg from VF%d, msg 0x%x\n", vf, mbx.msg.msg); |