diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2025-09-16 21:08:39 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-18 13:09:43 +0200 |
| commit | fa18932afb29b51530508f28adcc824a8c00b712 (patch) | |
| tree | 3c62555d295ebd0fe17f3c712db302e626ff88e6 | |
| parent | 6684b91d04b408843bd65e2120f6db2159e4f40b (diff) | |
bnxt_en: Implement ethtool .set_tunable() for ETHTOOL_PFC_PREVENTION_TOUT
Support the setting of the tunable if it is supported by firmware.
The supported range is 0 to the maximum msec value reported by
firmware. PFC_STORM_PREVENTION_AUTO is also supported and 0 means it
is disabled.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250917040839.1924698-11-michael.chan@broadcom.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 24 | ||||
| -rw-r--r-- | include/linux/bnxt/hsi.h | 21 |
2 files changed, 44 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index d94a8a2bf0f9..be32ef8f5c96 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -4416,12 +4416,25 @@ static int bnxt_hwrm_pfcwd_qcfg(struct bnxt *bp, u16 *val) return rc; } +static int bnxt_hwrm_pfcwd_cfg(struct bnxt *bp, u16 val) +{ + struct hwrm_queue_pfcwd_timeout_cfg_input *req; + int rc; + + rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCWD_TIMEOUT_CFG); + if (rc) + return rc; + req->pfcwd_timeout_value = cpu_to_le16(val); + rc = hwrm_req_send(bp, req); + return rc; +} + static int bnxt_set_tunable(struct net_device *dev, const struct ethtool_tunable *tuna, const void *data) { struct bnxt *bp = netdev_priv(dev); - u32 rx_copybreak; + u32 rx_copybreak, val; switch (tuna->id) { case ETHTOOL_RX_COPYBREAK: @@ -4434,6 +4447,15 @@ static int bnxt_set_tunable(struct net_device *dev, bp->rx_copybreak = rx_copybreak; } return 0; + case ETHTOOL_PFC_PREVENTION_TOUT: + if (BNXT_VF(bp) || !bp->max_pfcwd_tmo_ms) + return -EOPNOTSUPP; + + val = *(u16 *)data; + if (val > bp->max_pfcwd_tmo_ms && + val != PFC_STORM_PREVENTION_AUTO) + return -EINVAL; + return bnxt_hwrm_pfcwd_cfg(bp, val); default: return -EOPNOTSUPP; } diff --git a/include/linux/bnxt/hsi.h b/include/linux/bnxt/hsi.h index 23e7b1290a92..47c34990cf23 100644 --- a/include/linux/bnxt/hsi.h +++ b/include/linux/bnxt/hsi.h @@ -6771,6 +6771,27 @@ struct hwrm_queue_pfcwd_timeout_qcaps_output { u8 valid; }; +/* hwrm_queue_pfcwd_timeout_cfg_input (size:192b/24B) */ +struct hwrm_queue_pfcwd_timeout_cfg_input { + __le16 req_type; + __le16 cmpl_ring; + __le16 seq_id; + __le16 target_id; + __le64 resp_addr; + __le16 pfcwd_timeout_value; + u8 unused_0[6]; +}; + +/* hwrm_queue_pfcwd_timeout_cfg_output (size:128b/16B) */ +struct hwrm_queue_pfcwd_timeout_cfg_output { + __le16 error_code; + __le16 req_type; + __le16 seq_id; + __le16 resp_len; + u8 unused_0[7]; + u8 valid; +}; + /* hwrm_queue_pfcwd_timeout_qcfg_input (size:128b/16B) */ struct hwrm_queue_pfcwd_timeout_qcfg_input { __le16 req_type; |