diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2025-09-16 21:08:38 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-18 13:09:43 +0200 |
| commit | 6684b91d04b408843bd65e2120f6db2159e4f40b (patch) | |
| tree | 660851b3d7844fe0458e13f28a81ab8d59c85741 /drivers | |
| parent | bnxt_en: Use VLAN_ETH_HLEN when possible (diff) | |
| download | linux-6684b91d04b408843bd65e2120f6db2159e4f40b.tar.gz linux-6684b91d04b408843bd65e2120f6db2159e4f40b.zip | |
bnxt_en: Implement ethtool .get_tunable() for ETHTOOL_PFC_PREVENTION_TOUT
Return the current PFC watchdog timeout value if it is supported.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250917040839.1924698-10-michael.chan@broadcom.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 18 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 21 |
3 files changed, 41 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index c49a4755a94d..d59612d1e176 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -14748,6 +14748,23 @@ static bool bnxt_fw_pre_resv_vnics(struct bnxt *bp) return false; } +static void bnxt_hwrm_pfcwd_qcaps(struct bnxt *bp) +{ + struct hwrm_queue_pfcwd_timeout_qcaps_output *resp; + struct hwrm_queue_pfcwd_timeout_qcaps_input *req; + int rc; + + bp->max_pfcwd_tmo_ms = 0; + rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCWD_TIMEOUT_QCAPS); + if (rc) + return; + resp = hwrm_req_hold(bp, req); + rc = hwrm_req_send_silent(bp, req); + if (!rc) + bp->max_pfcwd_tmo_ms = le16_to_cpu(resp->max_pfcwd_timeout); + hwrm_req_drop(bp, req); +} + static int bnxt_fw_init_one_p1(struct bnxt *bp) { int rc; @@ -14825,6 +14842,7 @@ static int bnxt_fw_init_one_p2(struct bnxt *bp) if (bnxt_fw_pre_resv_vnics(bp)) bp->fw_cap |= BNXT_FW_CAP_PRE_RESV_VNICS; + bnxt_hwrm_pfcwd_qcaps(bp); bnxt_hwrm_func_qcfg(bp); bnxt_hwrm_vnic_qcaps(bp); bnxt_hwrm_port_led_qcaps(bp); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index c0f46eaf91c0..06a4c2afdf8a 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -2426,6 +2426,8 @@ struct bnxt { u8 max_q; u8 num_tc; + u16 max_pfcwd_tmo_ms; + u8 tph_mode; unsigned int current_interval; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 2830a2b17a27..d94a8a2bf0f9 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -4399,6 +4399,23 @@ static int bnxt_get_eee(struct net_device *dev, struct ethtool_keee *edata) return 0; } +static int bnxt_hwrm_pfcwd_qcfg(struct bnxt *bp, u16 *val) +{ + struct hwrm_queue_pfcwd_timeout_qcfg_output *resp; + struct hwrm_queue_pfcwd_timeout_qcfg_input *req; + int rc; + + rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCWD_TIMEOUT_QCFG); + if (rc) + return rc; + resp = hwrm_req_hold(bp, req); + rc = hwrm_req_send(bp, req); + if (!rc) + *val = le16_to_cpu(resp->pfcwd_timeout_value); + hwrm_req_drop(bp, req); + return rc; +} + static int bnxt_set_tunable(struct net_device *dev, const struct ethtool_tunable *tuna, const void *data) @@ -4431,6 +4448,10 @@ static int bnxt_get_tunable(struct net_device *dev, case ETHTOOL_RX_COPYBREAK: *(u32 *)data = bp->rx_copybreak; break; + case ETHTOOL_PFC_PREVENTION_TOUT: + if (!bp->max_pfcwd_tmo_ms) + return -EOPNOTSUPP; + return bnxt_hwrm_pfcwd_qcfg(bp, data); default: return -EOPNOTSUPP; } |