From 72405298e92b590160ea21558b8105d18c107f3c Mon Sep 17 00:00:00 2001 From: Rob Miller Date: Wed, 26 Nov 2025 13:56:47 -0800 Subject: [PATCH] bnxt_en: Add Virtual Admin Link State Support for VFs The firmware can now cache the virtual link admin state (auto/on/off) of all VFs and as such, the PF driver no longer has to intercept the VF driver's port_phy_qcfg() call and then provide the link admin state. If the FW does not have this capability, fall back to the existing interception method. The initial default link admin state (auto) is also set initially when the VFs are created. Reviewed-by: Pavan Chebbi Reviewed-by: Kalesh AP Reviewed-by: Mohammad Shuab Siddique Signed-off-by: Rob Miller Signed-off-by: Michael Chan Link: https://patch.msgid.link/20251126215648.1885936-7-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 6 ++ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + .../net/ethernet/broadcom/bnxt/bnxt_sriov.c | 55 +++++++++++++++++-- 3 files changed, 57 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index d226a4117958..d17d0ea89c36 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -5695,6 +5695,10 @@ int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size, u16 cmd = bnxt_vf_req_snif[i]; unsigned int bit, idx; + if ((bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN) && + cmd == HWRM_PORT_PHY_QCFG) + continue; + idx = cmd / 32; bit = cmd % 32; data[idx] |= 1 << bit; @@ -9665,6 +9669,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp) bp->flags |= BNXT_FLAG_ROCEV1_CAP; if (flags & FUNC_QCAPS_RESP_FLAGS_ROCE_V2_SUPPORTED) bp->flags |= BNXT_FLAG_ROCEV2_CAP; + if (flags & FUNC_QCAPS_RESP_FLAGS_LINK_ADMIN_STATUS_SUPPORTED) + bp->fw_cap |= BNXT_FW_CAP_LINK_ADMIN; if (flags & FUNC_QCAPS_RESP_FLAGS_PCIE_STATS_SUPPORTED) bp->fw_cap |= BNXT_FW_CAP_PCIE_STATS_SUPPORTED; if (flags & FUNC_QCAPS_RESP_FLAGS_HOT_RESET_CAPABLE) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index bb12cebd40e1..f5f07a7e6b29 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -2484,6 +2484,7 @@ struct bnxt { #define BNXT_FW_CAP_ROCE_VF_RESC_MGMT_SUPPORTED BIT_ULL(6) #define BNXT_FW_CAP_KONG_MB_CHNL BIT_ULL(7) #define BNXT_FW_CAP_ROCE_VF_DYN_ALLOC_SUPPORT BIT_ULL(8) + #define BNXT_FW_CAP_LINK_ADMIN BIT_ULL(9) #define BNXT_FW_CAP_OVS_64BIT_HANDLE BIT_ULL(10) #define BNXT_FW_CAP_TRUSTED_VF BIT_ULL(11) #define BNXT_FW_CAP_ERROR_RECOVERY BIT_ULL(13) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c index 80fed2c07b9e..be7deb9cc410 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c @@ -332,6 +332,38 @@ int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate, return rc; } +static int bnxt_set_vf_link_admin_state(struct bnxt *bp, int vf_id) +{ + struct hwrm_func_cfg_input *req; + struct bnxt_vf_info *vf; + int rc; + + if (!(bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN)) + return 0; + + vf = &bp->pf.vf[vf_id]; + + rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req); + if (rc) + return rc; + + req->fid = cpu_to_le16(vf->fw_fid); + switch (vf->flags & (BNXT_VF_LINK_FORCED | BNXT_VF_LINK_UP)) { + case BNXT_VF_LINK_FORCED: + req->options = + FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_FORCED_DOWN; + break; + case (BNXT_VF_LINK_FORCED | BNXT_VF_LINK_UP): + req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_FORCED_UP; + break; + default: + req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_AUTO; + break; + } + req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_LINK_STATE); + return hwrm_req_send(bp, req); +} + int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link) { struct bnxt *bp = netdev_priv(dev); @@ -357,10 +389,11 @@ int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link) break; default: netdev_err(bp->dev, "Invalid link option\n"); - rc = -EINVAL; - break; + return -EINVAL; } - if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED)) + if (bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN) + rc = bnxt_set_vf_link_admin_state(bp, vf_id); + else if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED)) rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf, ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE); return rc; @@ -666,15 +699,21 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset) hwrm_req_hold(bp, req); for (i = 0; i < num_vfs; i++) { + struct bnxt_vf_info *vf = &pf->vf[i]; + + vf->fw_fid = pf->first_vf_id + i; + rc = bnxt_set_vf_link_admin_state(bp, i); + if (rc) + break; + if (reset) __bnxt_set_vf_params(bp, i); - req->vf_id = cpu_to_le16(pf->first_vf_id + i); + req->vf_id = cpu_to_le16(vf->fw_fid); rc = hwrm_req_send(bp, req); if (rc) break; pf->active_vfs = i + 1; - pf->vf[i].fw_fid = pf->first_vf_id + i; } if (pf->active_vfs) { @@ -741,6 +780,12 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs) FUNC_CFG_REQ_ENABLES_NUM_VNICS | FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS); + if (bp->fw_cap & BNXT_FW_CAP_LINK_ADMIN) { + req->options = FUNC_CFG_REQ_OPTIONS_LINK_ADMIN_STATE_AUTO; + req->enables |= + cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_LINK_STATE); + } + mtu = bp->dev->mtu + VLAN_ETH_HLEN; req->mru = cpu_to_le16(mtu); req->admin_mtu = cpu_to_le16(mtu); -- 2.47.3