dsa_tag.h

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/*
 * SPDX-FileCopyrightText: Copyright 2025-2026 NXP
 * SPDX-License-Identifier: Apache-2.0
 */

 
#ifndef ZEPHYR_INCLUDE_NET_DSA_TAG_H_
#define ZEPHYR_INCLUDE_NET_DSA_TAG_H_

 
#include <zephyr/dt-bindings/ethernet/dsa_tag_proto.h>
 
#ifdef __cplusplus
extern "C" {
#endif

struct dsa_tag_register {
        int proto;

        struct net_if *(*recv)(struct net_if *iface, struct net_pkt *pkt);

        struct net_pkt *(*xmit)(struct net_if *iface, struct net_pkt *pkt);
};
 
#define DSA_TAG_REGISTER(_proto, _recv, _xmit)                                                     \
        static const STRUCT_SECTION_ITERABLE(dsa_tag_register, __dsa_tag_register_##_proto) = {    \
                .proto = _proto,                                                                   \
                .recv = _recv,                                                                     \
                .xmit = _xmit,                                                                     \
        }

 
/*
 * DSA tag protocol handles packet received by untagging
 *
 * param iface: Interface of DSA conduit port on which receives the packet
 * param pkt: Network packet
 *
 * Returns: Interface of DSA user port to redirect
 */
struct net_if *dsa_tag_recv(struct net_if *iface, struct net_pkt *pkt);
 
/*
 * DSA tag protocol handles packet transmitted by tagging
 *
 * param iface: Interface of DSA user port to transmit
 * param pkt: Network packet
 *
 * Returns: Network packet tagged
 */
struct net_pkt *dsa_tag_xmit(struct net_if *iface, struct net_pkt *pkt);
 
/*
 * Set up DSA tag protocol
 *
 * param dev_cpu: Device of DSA CPU port
 */
void dsa_tag_setup(const struct device *dev_cpu);


 
#endif /* ZEPHYR_INCLUDE_NET_DSA_TAG_H_ */