diff options
| author | Wei Fang <wei.fang@nxp.com> | 2026-06-11 10:14:54 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-06-15 14:32:06 -0700 |
| commit | 1a58ae73dd743bba2895431ee99471d784175244 (patch) | |
| tree | faaf3a6d1661ac3d2d6537580bc489cd66d44525 /include/linux | |
| parent | d51f238a154aeb6cb76c70a0b0cb72ea99319870 (diff) | |
net: dsa: netc: initialize the group bitmap of ETT and ECT
The Egress Treatment Table (ETT) and Egress Count Table (ECT) are both
index tables whose entry IDs are allocated by software. Every num_ports
entries form a group, where each entry in the group corresponds to one
port. To facilitate group allocation and management, initialize the group
index bitmaps for both tables based on hardware capabilities reported by
ETTCAPR and ECTCAPR registers.
The bitmap size per table is calculated as the total number of hardware
entries divided by the number of available ports, which gives the number
of groups available for software allocation. A set bit in the bitmap
represents a group index that has been allocated.
These bitmaps will be used by subsequent patches that add VLAN support.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260611021458.2629145-6-wei.fang@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fsl/ntmp.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/fsl/ntmp.h b/include/linux/fsl/ntmp.h index 1222901f48a7..e8b1bd802f19 100644 --- a/include/linux/fsl/ntmp.h +++ b/include/linux/fsl/ntmp.h @@ -3,6 +3,7 @@ #ifndef __NETC_NTMP_H #define __NETC_NTMP_H +#include <linux/bitmap.h> #include <linux/bitops.h> #include <linux/if_ether.h> @@ -70,6 +71,12 @@ struct ntmp_user { struct device *dev; struct netc_cbdr *ring; struct netc_tbl_vers tbl; + + /* NTMP table bitmaps for resource management */ + u32 ett_bitmap_size; + u32 ect_bitmap_size; + unsigned long *ett_gid_bitmap; /* only valid for switch */ + unsigned long *ect_gid_bitmap; /* only valid for switch */ }; struct maft_entry_data { |