drivers/net/ethernet/sfc/tc_conntrack.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /****************************************************************************
   3  * Driver for Solarflare network controllers and boards
   4  * Copyright 2023, Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #ifndef EFX_TC_CONNTRACK_H
  12 #define EFX_TC_CONNTRACK_H
  13 #include "net_driver.h"
  14
  15 #if IS_ENABLED(CONFIG_SFC_SRIOV)
  16 #include <linux/refcount.h>
  17 #include <net/netfilter/nf_flow_table.h>
  18
  19 struct efx_tc_ct_zone {
  20         u16 zone;
  21         struct rhash_head linkage;
  22         refcount_t ref;
  23         struct nf_flowtable *nf_ft;
  24         struct efx_nic *efx;
  25         struct mutex mutex; /* protects cts list */
  26         struct list_head cts; /* list of efx_tc_ct_entry in this zone */
  27 };
  28
  29 /* create/uncreate/teardown hashtables */
  30 int efx_tc_init_conntrack(struct efx_nic *efx);
  31 void efx_tc_destroy_conntrack(struct efx_nic *efx);
  32 void efx_tc_fini_conntrack(struct efx_nic *efx);
  33
  34 struct efx_tc_ct_zone *efx_tc_ct_register_zone(struct efx_nic *efx, u16 zone,
  35                                                struct nf_flowtable *ct_ft);
  36 void efx_tc_ct_unregister_zone(struct efx_nic *efx,
  37                                struct efx_tc_ct_zone *ct_zone);
  38
  39 struct efx_tc_ct_entry {
  40         unsigned long cookie;
  41         struct rhash_head linkage;
  42         __be16 eth_proto;
  43         u8 ip_proto;
  44         bool dnat;
  45         __be32 src_ip, dst_ip, nat_ip;
  46         struct in6_addr src_ip6, dst_ip6;
  47         __be16 l4_sport, l4_dport, l4_natport; /* Ports (UDP, TCP) */
  48         struct efx_tc_ct_zone *zone;
  49         u32 mark;
  50         struct efx_tc_counter *cnt;
  51         struct list_head list; /* entry on zone->cts */
  52 };
  53
  54 #endif /* CONFIG_SFC_SRIOV */
  55 #endif /* EFX_TC_CONNTRACK_H */