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matchall rules can be added only to chain 0 and their priorities have limitations: - new matchall ingress rule's priority must be higher (lower value) than any existing flower rule; - new matchall egress rule's priority must be lower (higher value) than any existing flower rule. The opposite works for flower rule adding: - new flower ingress rule's priority must be lower (higher value) than any existing matchall rule; - new flower egress rule's priority must be higher (lower value) than any existing matchall rule. This is a hardware limitation and thus must be properly handled in driver by reporting errors to the user when newly added rule has such a priority that cannot be installed into the hardware. To achieve this, the driver must maintain both min/max matchall priorities for every flower block when user adds/deletes a matchall rule, as well as both min/max flower priorities for chain 0 for every adding/deletion of flower rules for chain 0. Cc: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Maksym Glubokiy <maksym.glubokiy@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
17 lines
545 B
C
17 lines
545 B
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/* Copyright (c) 2022 Marvell International Ltd. All rights reserved. */
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#ifndef _PRESTERA_MATCHALL_H_
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#define _PRESTERA_MATCHALL_H_
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#include <net/pkt_cls.h>
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struct prestera_flow_block;
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int prestera_mall_replace(struct prestera_flow_block *block,
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struct tc_cls_matchall_offload *f);
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void prestera_mall_destroy(struct prestera_flow_block *block);
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int prestera_mall_prio_get(struct prestera_flow_block *block,
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u32 *prio_min, u32 *prio_max);
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#endif /* _PRESTERA_MATCHALL_H_ */
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