c08afcdcf9
Functions efx_tc_netdev_event and efx_tc_netevent_event do not exist
in that case as object files tc_bindings.o and tc_encap_actions.o
are not built, so the calls to them from ef100_netdev_event and
ef100_netevent_event cause link errors.
Wrap the corresponding header files (tc_bindings.h, tc_encap_actions.h)
with #if IS_ENABLED(CONFIG_SFC_SRIOV), and add an #else with static
inline stubs for these two functions.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306102026.ISK5JfUQ-lkp@intel.com/
Fixes: 7e5e7d8000 ("sfc: neighbour lookup for TC encap action offload")
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2023, Advanced Micro Devices, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EFX_TC_ENCAP_ACTIONS_H
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#define EFX_TC_ENCAP_ACTIONS_H
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#include "net_driver.h"
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#if IS_ENABLED(CONFIG_SFC_SRIOV)
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#include <linux/refcount.h>
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#include <net/tc_act/tc_tunnel_key.h>
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/**
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* struct efx_neigh_binder - driver state for a neighbour entry
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* @net: the network namespace in which this neigh resides
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* @dst_ip: the IPv4 destination address resolved by this neigh
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* @dst_ip6: the IPv6 destination address resolved by this neigh
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* @ha: the hardware (Ethernet) address of the neighbour
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* @n_valid: true if the neighbour is in NUD_VALID state
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* @lock: protects @ha and @n_valid
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* @ttl: Time To Live associated with the route used
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* @dying: set when egdev is going away, to skip further updates
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* @egdev: egress device from the route lookup. Holds a reference
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* @dev_tracker: reference tracker entry for @egdev
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* @ns_tracker: reference tracker entry for @ns
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* @ref: counts encap actions referencing this entry
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* @used: jiffies of last time traffic hit any encap action using this.
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* When counter reads update this, a new neighbour event is sent to
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* indicate that the neighbour entry is still in use.
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* @users: list of &struct efx_tc_encap_action
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* @linkage: entry in efx->neigh_ht (keys are @net, @dst_ip, @dst_ip6).
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* @work: processes neighbour state changes, updates the encap actions
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* @efx: owning NIC instance.
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*
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* Associates a neighbour entry with the encap actions that are
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* interested in it, allowing the latter to be updated when the
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* neighbour details change.
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* Whichever of @dst_ip and @dst_ip6 is not in use will be all-zeroes,
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* this distinguishes IPv4 from IPv6 entries.
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*/
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struct efx_neigh_binder {
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struct net *net;
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__be32 dst_ip;
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struct in6_addr dst_ip6;
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char ha[ETH_ALEN];
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bool n_valid;
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rwlock_t lock;
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u8 ttl;
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bool dying;
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struct net_device *egdev;
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netdevice_tracker dev_tracker;
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netns_tracker ns_tracker;
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refcount_t ref;
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unsigned long used;
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struct list_head users;
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struct rhash_head linkage;
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struct work_struct work;
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struct efx_nic *efx;
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};
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/* This limit is arbitrary; current hardware (SN1022) handles encap headers
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* of up to 126 bytes, but that limit is not enshrined in the MCDI protocol.
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*/
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#define EFX_TC_MAX_ENCAP_HDR 126
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struct efx_tc_encap_action {
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enum efx_encap_type type;
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struct ip_tunnel_key key; /* 52 bytes */
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u32 dest_mport; /* is copied into struct efx_tc_action_set */
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u8 encap_hdr_len;
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bool n_valid;
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u8 encap_hdr[EFX_TC_MAX_ENCAP_HDR];
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struct efx_neigh_binder *neigh;
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struct list_head list; /* entry on neigh->users list */
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struct list_head users; /* action sets using this encap_md */
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struct rhash_head linkage; /* efx->tc_encap_ht */
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refcount_t ref;
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u32 fw_id; /* index of this entry in firmware encap table */
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};
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/* create/uncreate/teardown hashtables */
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int efx_tc_init_encap_actions(struct efx_nic *efx);
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void efx_tc_destroy_encap_actions(struct efx_nic *efx);
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void efx_tc_fini_encap_actions(struct efx_nic *efx);
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struct efx_tc_flow_rule;
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bool efx_tc_check_ready(struct efx_nic *efx, struct efx_tc_flow_rule *rule);
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struct efx_tc_encap_action *efx_tc_flower_create_encap_md(
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struct efx_nic *efx, const struct ip_tunnel_info *info,
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struct net_device *egdev, struct netlink_ext_ack *extack);
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void efx_tc_flower_release_encap_md(struct efx_nic *efx,
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struct efx_tc_encap_action *encap);
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void efx_tc_unregister_egdev(struct efx_nic *efx, struct net_device *net_dev);
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int efx_tc_netevent_event(struct efx_nic *efx, unsigned long event,
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void *ptr);
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#else /* CONFIG_SFC_SRIOV */
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static inline int efx_tc_netevent_event(struct efx_nic *efx,
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unsigned long event, void *ptr)
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{
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return NOTIFY_DONE;
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}
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#endif /* CONFIG_SFC_SRIOV */
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#endif /* EFX_TC_ENCAP_ACTIONS_H */
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