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authorMichael Chan <michael.chan@broadcom.com>2017-07-24 19:34:25 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-25 03:29:58 +0300
commit9315edca9b1d0daf41f81e1f5d4fb995d3cbc634 (patch)
tree6fb04a9f9f529c6e2a7f6a368c83a1b75449173b /drivers/net/ethernet/broadcom/bnxt
parentadcc331e42e639ea44ac3c746db6c7207c3f69c0 (diff)
downloadlinux-9315edca9b1d0daf41f81e1f5d4fb995d3cbc634.tar.xz
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 <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt')
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt.c19
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt.h1
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c11
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;
}