diff options
| author | Wei Fang <wei.fang@nxp.com> | 2026-07-20 09:43:06 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-07-27 16:31:53 -0700 |
| commit | 6228fc9c2bbe224a376c77e309bcf90158e0595c (patch) | |
| tree | 12e4b306b090618ce8fe83ad14ed1bb2d3e18b4d /include/linux/fsl | |
| parent | debf0c7a34fab2c4c47fc257a97a145543b6d3aa (diff) | |
net: enetc: improve MAFT entry management with bitmap tracking
Replace the counter-based MAFT entry tracking (num_mfe/mac_filter_num)
with a bitmap (maft_eid_bitmap) stored in struct ntmp_user, which is a
more appropriate place for NTMP resource management.
The bitmap approach brings two improvements. First, the entry deletion
in enetc4_pf_clear_maft_entries() now checks the return value of
ntmp_maft_delete_entry() and only clears the corresponding bit on
success, keeping hardware and software state in sync. Previously, the
counter was reset unconditionally regardless of whether the hardware
deletion actually succeeded.
Second, entry allocation in enetc4_pf_add_maft_entries() uses
ntmp_lookup_free_eid() to find available IDs dynamically, with an
upfront capacity check via bitmap_weight() to avoid partial failures.
The MAFT entry count is moved into ntmp_user.maft_num_entries and
initialized once during enetc4_init_ntmp_user(). Helper functions
enetc4_ntmp_bitmap_init() and enetc4_ntmp_bitmap_free() manage the
bitmap lifetime. The debugfs show function is updated accordingly to
iterate over set bits under rtnl_lock().
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260720014317.1059359-5-wei.fang@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/fsl')
| -rw-r--r-- | include/linux/fsl/ntmp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fsl/ntmp.h b/include/linux/fsl/ntmp.h index d3b6c476b91a..764ef2892608 100644 --- a/include/linux/fsl/ntmp.h +++ b/include/linux/fsl/ntmp.h @@ -75,8 +75,10 @@ struct ntmp_user { /* NTMP table bitmaps for resource management */ u32 ett_bitmap_size; u32 ect_bitmap_size; + u16 maft_num_entries; unsigned long *ett_gid_bitmap; /* only valid for switch */ unsigned long *ect_gid_bitmap; /* only valid for switch */ + unsigned long *maft_eid_bitmap; /* only valid for ENETC */ }; struct maft_entry_data { |