diff options
| author | Sunil Goutham <sgoutham@cavium.com> | 2015-08-30 12:29:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-30 21:54:12 -0700 |
| commit | d77a2384988fd397cf4f71417b9d971aa435758d (patch) | |
| tree | 9fbca2f38512934f9b1a5a5fc23960bf19af777a /drivers/net/ethernet/cavium/thunder/nic_main.c | |
| parent | 92dc87697e6a71675a9e9eec04ebecd8cf4837a3 (diff) | |
net: thunderx: Support for internal loopback mode
Support for setting VF's corresponding BGX LMAC in internal
loopback mode. This mode can be used for verifying basic HW
functionality such as packet I/O, RX checksum validation,
CQ/RBDR interrupts, stats e.t.c. Useful when DUT has no external
network connectivity.
'loopback' mode can be enabled or disabled via ethtool.
Note: This feature is not supported when no of VFs enabled are
morethan no of physical interfaces i.e active BGX LMACs
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.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 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index dac80943a782..b3a5947a2cc0 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -154,6 +154,9 @@ static void nic_mbx_send_ready(struct nicpf *nic, int vf) } mbx.nic_cfg.sqs_mode = (vf >= nic->num_vf_en) ? true : false; mbx.nic_cfg.node_id = nic->node; + + mbx.nic_cfg.loopback_supported = vf < MAX_LMAC; + nic_send_msg_to_vf(nic, vf, &mbx); } @@ -579,6 +582,21 @@ send_mbox: nic_send_msg_to_vf(nic, sqs->vf_id, &mbx); } +static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk) +{ + int bgx_idx, lmac_idx; + + if (lbk->vf_id > MAX_LMAC) + return -1; + + bgx_idx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lbk->vf_id]); + lmac_idx = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lbk->vf_id]); + + bgx_lmac_internal_loopback(nic->node, bgx_idx, lmac_idx, lbk->enable); + + return 0; +} + /* Interrupt handler to handle mailbox messages from VFs */ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) { @@ -702,6 +720,9 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) case NIC_MBOX_MSG_BGX_STATS: nic_get_bgx_stats(nic, &mbx.bgx_stats); goto unlock; + case NIC_MBOX_MSG_LOOPBACK: + ret = nic_config_loopback(nic, &mbx.lbk); + break; default: dev_err(&nic->pdev->dev, "Invalid msg from VF%d, msg 0x%x\n", vf, mbx.msg.msg); |