diff options
| author | Dave Ertman <david.m.ertman@intel.com> | 2020-05-08 03:41:01 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2020-05-22 08:10:04 +0300 |
| commit | 891540024bb959c3ce8b71b851ba24cd3ad9423f (patch) | |
| tree | f216fcbd6df520533b90118e96078ff4f7c7f718 /drivers/net/ethernet/intel | |
| parent | 610ed0e93e7dd107afc2398d54de6b6fe9513f8d (diff) | |
| download | linux-891540024bb959c3ce8b71b851ba24cd3ad9423f.tar.xz | |
ice: Fix check for contiguous TCs
The current implementation for contiguous TC check
is assuming that the UPs will be mapped to TCs in
a linear progressing fashion. This is obviously
not always true.
Change the check to allow for various UP2TC mapping
configurations.
Signed-off-by: Dave Ertman <david.m.ertman@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')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c index 448b7d2fb808..3c7f604c0c49 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c @@ -584,16 +584,21 @@ static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked) */ static bool ice_dcb_tc_contig(u8 *prio_table) { - u8 max_tc = 0; + bool found_empty = false; + u8 used_tc = 0; int i; - for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) { - u8 cur_tc = prio_table[i]; + /* Create a bitmap of used TCs */ + for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) + used_tc |= BIT(prio_table[i]); - if (cur_tc > max_tc) - return false; - else if (cur_tc == max_tc) - max_tc++; + for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) { + if (used_tc & BIT(i)) { + if (found_empty) + return false; + } else { + found_empty = true; + } } return true; |