From 70bcfea70f12a72b67e868f474e9512c5ec6ae21 Mon Sep 17 00:00:00 2001 From: Dave Ertman Date: Fri, 20 Nov 2020 16:38:35 -0800 Subject: [PATCH] ice: Fix state bits on LLDP mode switch [ Upstream commit 0d4907f65dc8fc5e897ad19956fca1acb3b33bc8 ] DCBX_CAP bits were not being adjusted when switching between SW and FW controlled LLDP. Adjust bits to correctly indicate which mode the LLDP logic is in. Fixes: b94b013eb626 ("ice: Implement DCBNL support") Signed-off-by: Dave Ertman Tested-by: Tony Brelinski Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice.h | 2 -- drivers/net/ethernet/intel/ice/ice_dcb_nl.c | 4 ++++ drivers/net/ethernet/intel/ice/ice_ethtool.c | 7 +++++++ 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h index 54cf382..5b3f2bb 100644 --- a/drivers/net/ethernet/intel/ice/ice.h +++ b/drivers/net/ethernet/intel/ice/ice.h @@ -444,9 +444,7 @@ struct ice_pf { struct ice_hw_port_stats stats_prev; struct ice_hw hw; u8 stat_prev_loaded:1; /* has previous stats been loaded */ -#ifdef CONFIG_DCB u16 dcbx_cap; -#endif /* CONFIG_DCB */ u32 tx_timeout_count; unsigned long tx_timeout_last_recovery; u32 tx_timeout_recovery_level; diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c index 842d44b..8c133a8 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c +++ b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c @@ -160,6 +160,10 @@ static u8 ice_dcbnl_setdcbx(struct net_device *netdev, u8 mode) { struct ice_pf *pf = ice_netdev_to_pf(netdev); + /* if FW LLDP agent is running, DCBNL not allowed to change mode */ + if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) + return ICE_DCB_NO_HW_CHG; + /* No support for LLD_MANAGED modes or CEE+IEEE */ if ((mode & DCB_CAP_DCBX_LLD_MANAGED) || ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) || diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index 69c113a..d27b9cb 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -8,6 +8,7 @@ #include "ice_fltr.h" #include "ice_lib.h" #include "ice_dcb_lib.h" +#include struct ice_stats { char stat_string[ETH_GSTRING_LEN]; @@ -1238,6 +1239,9 @@ static int ice_set_priv_flags(struct net_device *netdev, u32 flags) status = ice_init_pf_dcb(pf, true); if (status) dev_warn(dev, "Fail to init DCB\n"); + + pf->dcbx_cap &= ~DCB_CAP_DCBX_LLD_MANAGED; + pf->dcbx_cap |= DCB_CAP_DCBX_HOST; } else { enum ice_status status; bool dcbx_agent_status; @@ -1280,6 +1284,9 @@ static int ice_set_priv_flags(struct net_device *netdev, u32 flags) if (status) dev_dbg(dev, "Fail to enable MIB change events\n"); + pf->dcbx_cap &= ~DCB_CAP_DCBX_HOST; + pf->dcbx_cap |= DCB_CAP_DCBX_LLD_MANAGED; + ice_nway_reset(netdev); } } -- 2.7.4