From 9315edca9b1d0daf41f81e1f5d4fb995d3cbc634 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 24 Jul 2017 12:34:25 -0400 Subject: [PATCH] bnxt_en: Report firmware DCBX agent. Report DCB_CAP_DCBX_LLD_MANAGED only if the firmware DCBX agent is enabled and running for PF or VF. Otherwise, if both LLDP and DCBX agents are disabled in firmware, we report DCB_CAP_DCBX_LLD_HOST and allow host IEEE DCB settings. This patch refines the current logic in the driver. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 19 ++++++++++--------- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 11 ++++++++--- 3 files changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 5df967037d10..95fea2622d64 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4578,6 +4578,7 @@ static int bnxt_hwrm_func_qcfg(struct bnxt *bp) { struct hwrm_func_qcfg_input req = {0}; struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr; + u16 flags; int rc; bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1); @@ -4594,15 +4595,15 @@ static int bnxt_hwrm_func_qcfg(struct bnxt *bp) vf->vlan = le16_to_cpu(resp->vlan) & VLAN_VID_MASK; } #endif - if (BNXT_PF(bp)) { - u16 flags = le16_to_cpu(resp->flags); - - if (flags & (FUNC_QCFG_RESP_FLAGS_FW_DCBX_AGENT_ENABLED | - FUNC_QCFG_RESP_FLAGS_FW_LLDP_AGENT_ENABLED)) - bp->flags |= BNXT_FLAG_FW_LLDP_AGENT; - if (flags & FUNC_QCFG_RESP_FLAGS_MULTI_HOST) - bp->flags |= BNXT_FLAG_MULTI_HOST; - } + flags = le16_to_cpu(resp->flags); + if (flags & (FUNC_QCFG_RESP_FLAGS_FW_DCBX_AGENT_ENABLED | + FUNC_QCFG_RESP_FLAGS_FW_LLDP_AGENT_ENABLED)) { + bp->flags |= BNXT_FLAG_FW_LLDP_AGENT; + if (flags & FUNC_QCFG_RESP_FLAGS_FW_DCBX_AGENT_ENABLED) + bp->flags |= BNXT_FLAG_FW_DCBX_AGENT; + } + if (BNXT_PF(bp) && (flags & FUNC_QCFG_RESP_FLAGS_MULTI_HOST)) + bp->flags |= BNXT_FLAG_MULTI_HOST; switch (resp->port_partition_type) { case FUNC_QCFG_RESP_PORT_PARTITION_TYPE_NPAR1_0: diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 15d5a10122ed..6b781be66722 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1027,6 +1027,7 @@ struct bnxt { #define BNXT_FLAG_MULTI_HOST 0x100000 #define BNXT_FLAG_SHORT_CMD 0x200000 #define BNXT_FLAG_DOUBLE_DB 0x400000 + #define BNXT_FLAG_FW_DCBX_AGENT 0x800000 #define BNXT_FLAG_CHIP_NITRO_A0 0x1000000 #define BNXT_FLAG_ALL_CONFIG_FEATS (BNXT_FLAG_TPA | \ diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c index 5c6dd0ce209f..c0145898f64c 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c @@ -549,13 +549,18 @@ static u8 bnxt_dcbnl_setdcbx(struct net_device *dev, u8 mode) { struct bnxt *bp = netdev_priv(dev); - /* only support IEEE */ - if ((mode & DCB_CAP_DCBX_VER_CEE) || !(mode & DCB_CAP_DCBX_VER_IEEE)) + /* All firmware DCBX settings are set in NVRAM */ + if (bp->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) return 1; if (mode & DCB_CAP_DCBX_HOST) { if (BNXT_VF(bp) || (bp->flags & BNXT_FLAG_FW_LLDP_AGENT)) return 1; + + /* only support IEEE */ + if ((mode & DCB_CAP_DCBX_VER_CEE) || + !(mode & DCB_CAP_DCBX_VER_IEEE)) + return 1; } if (mode == bp->dcbx_cap) @@ -584,7 +589,7 @@ void bnxt_dcb_init(struct bnxt *bp) bp->dcbx_cap = DCB_CAP_DCBX_VER_IEEE; if (BNXT_PF(bp) && !(bp->flags & BNXT_FLAG_FW_LLDP_AGENT)) bp->dcbx_cap |= DCB_CAP_DCBX_HOST; - else + else if (bp->flags & BNXT_FLAG_FW_DCBX_AGENT) bp->dcbx_cap |= DCB_CAP_DCBX_LLD_MANAGED; bp->dev->dcbnl_ops = &dcbnl_ops; } -- 2.11.0