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bbed0bbddd
The whole purpose of tag_8021q is to send VLAN-tagged traffic to the CPU, from which the driver can decode the source port and switch id. Currently this only works if the VLAN filtering on the master is disabled. Change that by explicitly adding code to tag_8021q.c to add the VLANs corresponding to the tags to the filter of the master interface. Because we now need to call vlan_vid_add, then we also need to hold the RTNL mutex. Propagate that requirement to the callers of dsa_8021q_setup and modify the existing call sites as appropriate. Note that one call path, sja1105_best_effort_vlan_filtering_set -> sja1105_vlan_filtering -> sja1105_setup_8021q_tagging, was already holding this lock. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
133 lines
2.7 KiB
C
133 lines
2.7 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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#if IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q)
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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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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(u16 vid);
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#else
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int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled)
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{
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return 0;
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}
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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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{
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return 0;
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}
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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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{
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return 0;
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}
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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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{
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return NULL;
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}
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u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port)
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{
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return 0;
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}
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u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port)
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{
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return 0;
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}
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u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan)
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{
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return 0;
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}
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int dsa_8021q_rx_switch_id(u16 vid)
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{
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return 0;
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}
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int dsa_8021q_rx_source_port(u16 vid)
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{
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return 0;
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}
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u16 dsa_8021q_rx_subvlan(u16 vid)
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{
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return 0;
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}
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bool vid_is_dsa_8021q(u16 vid)
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{
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return false;
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}
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#endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */
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#endif /* _NET_DSA_8021Q_H */
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