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bnxt_en: Report firmware DCBX agent.

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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>
This commit is contained in:
Michael Chan 2017-07-24 12:34:25 -04:00 committed by David S. Miller
parent adcc331e42
commit 9315edca9b
3 changed files with 18 additions and 11 deletions
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17
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -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:

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -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 | \

11
drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
View File

@ -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;
}