diff mbox series

[5.6,019/118] mlxsw: spectrum_acl_tcam: Position vchunk in a vregion list properly

Message ID 20200513094419.427217170@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman May 13, 2020, 9:43 a.m. UTC 
From: Jiri Pirko <jiri@mellanox.com>

[ Upstream commit 6ef4889fc0b3aa6ab928e7565935ac6f762cee6e ]

Vregion helpers to get min and max priority depend on the correct
ordering of vchunks in the vregion list. However, the current code
always adds new chunk to the end of the list, no matter what the
priority is. Fix this by finding the correct place in the list and put
vchunk there.

Fixes: 22a677661f56 ("mlxsw: spectrum: Introduce ACL core with simple TCAM implementation")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)
diff mbox series

Patch

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -986,8 +986,9 @@  mlxsw_sp_acl_tcam_vchunk_create(struct m
 				unsigned int priority,
 				struct mlxsw_afk_element_usage *elusage)
 {
+	struct mlxsw_sp_acl_tcam_vchunk *vchunk, *vchunk2;
 	struct mlxsw_sp_acl_tcam_vregion *vregion;
-	struct mlxsw_sp_acl_tcam_vchunk *vchunk;
+	struct list_head *pos;
 	int err;
 
 	if (priority == MLXSW_SP_ACL_TCAM_CATCHALL_PRIO)
@@ -1025,7 +1026,14 @@  mlxsw_sp_acl_tcam_vchunk_create(struct m
 	}
 
 	mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(vregion);
-	list_add_tail(&vchunk->list, &vregion->vchunk_list);
+
+	/* Position the vchunk inside the list according to priority */
+	list_for_each(pos, &vregion->vchunk_list) {
+		vchunk2 = list_entry(pos, typeof(*vchunk2), list);
+		if (vchunk2->priority > priority)
+			break;
+	}
+	list_add_tail(&vchunk->list, pos);
 	mutex_unlock(&vregion->lock);
 
 	return vchunk;