This is a note to let you know that I've just added the patch titled
mlxsw: spectrum_acl_bloom_filter: Make mlxsw_sp_acl_bf_key_encode() more flexible
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mlxsw-spectrum_acl_bloom_filter-make-mlxsw_sp_acl_bf.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2a0f3199b233cfe7e7548f13e9f0ad8ff9a27d96
Author: Amit Cohen <amcohen@xxxxxxxxxx>
Date: Thu Jan 6 18:06:48 2022 +0200
mlxsw: spectrum_acl_bloom_filter: Make mlxsw_sp_acl_bf_key_encode() more flexible
[ Upstream commit 5d5c3ba9e4121b7738d10be3825f4d9a5a1d80ef ]
Spectrum-4 will calculate hash function for bloom filter differently from
the existing ASICs.
One of the changes is related to the way that the chunks will be build -
without padding.
As preparation for support of Spectrum-4 bloom filter, make
mlxsw_sp_acl_bf_key_encode() more flexible, so it will be able to use it
for Spectrum-4 as well.
Signed-off-by: Amit Cohen <amcohen@xxxxxxxxxx>
Reviewed-by: Petr Machata <petrm@xxxxxxxxxx>
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Stable-dep-of: 75d8d7a63065 ("mlxsw: spectrum_acl: Fix ACL scale regression and firmware errors")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c
index 2e8b17e3b9358..2d2e29c202770 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c
@@ -116,9 +116,10 @@ static u16 mlxsw_sp_acl_bf_crc(const u8 *buffer, size_t len)
}
static void
-mlxsw_sp_acl_bf_key_encode(struct mlxsw_sp_acl_atcam_region *aregion,
- struct mlxsw_sp_acl_atcam_entry *aentry,
- char *output, u8 *len)
+__mlxsw_sp_acl_bf_key_encode(struct mlxsw_sp_acl_atcam_region *aregion,
+ struct mlxsw_sp_acl_atcam_entry *aentry,
+ char *output, u8 *len, u8 max_chunks, u8 pad_bytes,
+ u8 key_offset, u8 chunk_key_len, u8 chunk_len)
{
struct mlxsw_afk_key_info *key_info = aregion->region->key_info;
u8 chunk_index, chunk_count, block_count;
@@ -129,17 +130,30 @@ mlxsw_sp_acl_bf_key_encode(struct mlxsw_sp_acl_atcam_region *aregion,
chunk_count = 1 + ((block_count - 1) >> 2);
erp_region_id = cpu_to_be16(aentry->ht_key.erp_id |
(aregion->region->id << 4));
- for (chunk_index = MLXSW_BLOOM_KEY_CHUNKS - chunk_count;
- chunk_index < MLXSW_BLOOM_KEY_CHUNKS; chunk_index++) {
- memset(chunk, 0, MLXSW_BLOOM_CHUNK_PAD_BYTES);
- memcpy(chunk + MLXSW_BLOOM_CHUNK_PAD_BYTES, &erp_region_id,
+ for (chunk_index = max_chunks - chunk_count; chunk_index < max_chunks;
+ chunk_index++) {
+ memset(chunk, 0, pad_bytes);
+ memcpy(chunk + pad_bytes, &erp_region_id,
sizeof(erp_region_id));
- memcpy(chunk + MLXSW_BLOOM_CHUNK_KEY_OFFSET,
+ memcpy(chunk + key_offset,
&aentry->enc_key[chunk_key_offsets[chunk_index]],
- MLXSW_BLOOM_CHUNK_KEY_BYTES);
- chunk += MLXSW_BLOOM_KEY_CHUNK_BYTES;
+ chunk_key_len);
+ chunk += chunk_len;
}
- *len = chunk_count * MLXSW_BLOOM_KEY_CHUNK_BYTES;
+ *len = chunk_count * chunk_len;
+}
+
+static void
+mlxsw_sp_acl_bf_key_encode(struct mlxsw_sp_acl_atcam_region *aregion,
+ struct mlxsw_sp_acl_atcam_entry *aentry,
+ char *output, u8 *len)
+{
+ __mlxsw_sp_acl_bf_key_encode(aregion, aentry, output, len,
+ MLXSW_BLOOM_KEY_CHUNKS,
+ MLXSW_BLOOM_CHUNK_PAD_BYTES,
+ MLXSW_BLOOM_CHUNK_KEY_OFFSET,
+ MLXSW_BLOOM_CHUNK_KEY_BYTES,
+ MLXSW_BLOOM_KEY_CHUNK_BYTES);
}
static unsigned int
