233697b3b3
The added value of this function is that it can deal with both the case where the VLAN header is in the skb head, as well as in the offload field. This is something I was not able to do using other functions in the network stack. Since both ocelot-8021q and sja1105 need to do the same stuff, let's make it a common service provided by tag_8021q. This is done as refactoring for the new SJA1110 tagger, which partly uses tag_8021q as well (just like SJA1105), and will be the third caller. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
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*/
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#ifndef _NET_DSA_8021Q_H
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#define _NET_DSA_8021Q_H
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#include <linux/refcount.h>
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#include <linux/types.h>
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struct dsa_switch;
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struct sk_buff;
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struct net_device;
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struct packet_type;
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struct dsa_8021q_context;
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struct dsa_8021q_crosschip_link {
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struct list_head list;
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int port;
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struct dsa_8021q_context *other_ctx;
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int other_port;
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refcount_t refcount;
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};
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struct dsa_8021q_ops {
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int (*vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags);
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int (*vlan_del)(struct dsa_switch *ds, int port, u16 vid);
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};
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struct dsa_8021q_context {
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const struct dsa_8021q_ops *ops;
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struct dsa_switch *ds;
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struct list_head crosschip_links;
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/* EtherType of RX VID, used for filtering on master interface */
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__be16 proto;
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};
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#define DSA_8021Q_N_SUBVLAN 8
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int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled);
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int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port,
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struct dsa_8021q_context *other_ctx,
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int other_port);
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int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port,
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struct dsa_8021q_context *other_ctx,
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int other_port);
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struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
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u16 tpid, u16 tci);
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void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id,
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int *subvlan);
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u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port);
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u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port);
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u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan);
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int dsa_8021q_rx_switch_id(u16 vid);
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int dsa_8021q_rx_source_port(u16 vid);
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u16 dsa_8021q_rx_subvlan(u16 vid);
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bool vid_is_dsa_8021q_rxvlan(u16 vid);
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bool vid_is_dsa_8021q_txvlan(u16 vid);
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bool vid_is_dsa_8021q(u16 vid);
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#endif /* _NET_DSA_8021Q_H */
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