diff options
| author | Anirudh Venkataramanan <anirudh.venkataramanan@intel.com> | 2019-02-28 15:24:24 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-04-18 08:38:47 -0700 |
| commit | 7b9ffc76bf5998aad8feaa26d9d3fcb65ec7a21b (patch) | |
| tree | 9935f6c7b53786d7f9ce06d804aa4a42ce541ec4 /drivers/net/ethernet/intel/ice/ice_common.c | |
| parent | 0ebd3ff13ccad2940516ba522ca8d21cea4f56f6 (diff) | |
| download | linux-7b9ffc76bf5998aad8feaa26d9d3fcb65ec7a21b.tar.bz2 | |
ice: Add code for DCB initialization part 3/4
This patch adds a new function ice_pf_dcb_cfg (and related helpers)
which applies the DCB configuration obtained from the firmware. As
part of this, VSIs/netdevs are updated with traffic class information.
This patch requires a bit of a refactor of existing code.
1. For a MIB change event, the associated VSI is closed and brought up
again. The gap between closing and opening the VSI can cause a race
condition. Fix this by grabbing the rtnl_lock prior to closing the
VSI and then only free it after re-opening the VSI during a MIB
change event.
2. ice_sched_query_elem is used in ice_sched.c and with this patch, in
ice_dcb.c as well. However, ice_dcb.c is not built when CONFIG_DCB is
unset. This results in namespace warnings (ice_sched.o: Externally
defined symbols with no external references) when CONFIG_DCB is unset.
To avoid this move ice_sched_query_elem from ice_sched.c to
ice_common.c.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_common.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c index 3730daf1bc1a..2937c6be1aee 100644 --- a/drivers/net/ethernet/intel/ice/ice_common.c +++ b/drivers/net/ethernet/intel/ice/ice_common.c @@ -3106,3 +3106,28 @@ ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded, /* to manage the potential roll-over */ *cur_stat = (new_data + BIT_ULL(32)) - *prev_stat; } + +/** + * ice_sched_query_elem - query element information from HW + * @hw: pointer to the HW struct + * @node_teid: node TEID to be queried + * @buf: buffer to element information + * + * This function queries HW element information + */ +enum ice_status +ice_sched_query_elem(struct ice_hw *hw, u32 node_teid, + struct ice_aqc_get_elem *buf) +{ + u16 buf_size, num_elem_ret = 0; + enum ice_status status; + + buf_size = sizeof(*buf); + memset(buf, 0, buf_size); + buf->generic[0].node_teid = cpu_to_le32(node_teid); + status = ice_aq_query_sched_elems(hw, 1, buf, buf_size, &num_elem_ret, + NULL); + if (status || num_elem_ret != 1) + ice_debug(hw, ICE_DBG_SCHED, "query element failed\n"); + return status; +} |