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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/kernel.h>#include <linux/list.h>#include <linux/netlink.h>#include <net/flow_dissector.h>
struct flow_match { struct flow_dissector *dissector; void *mask; void *key;};
struct flow_match_meta { struct flow_dissector_key_meta *key, *mask;};
struct flow_match_basic { struct flow_dissector_key_basic *key, *mask;};
struct flow_match_control { struct flow_dissector_key_control *key, *mask;};
struct flow_match_eth_addrs { struct flow_dissector_key_eth_addrs *key, *mask;};
struct flow_match_vlan { struct flow_dissector_key_vlan *key, *mask;};
struct flow_match_arp { struct flow_dissector_key_arp *key, *mask;};
struct flow_match_ipv4_addrs { struct flow_dissector_key_ipv4_addrs *key, *mask;};
struct flow_match_ipv6_addrs { struct flow_dissector_key_ipv6_addrs *key, *mask;};
struct flow_match_ip { struct flow_dissector_key_ip *key, *mask;};
struct flow_match_ports { struct flow_dissector_key_ports *key, *mask;};
struct flow_match_ports_range { struct flow_dissector_key_ports_range *key, *mask;};
struct flow_match_icmp { struct flow_dissector_key_icmp *key, *mask;};
struct flow_match_tcp { struct flow_dissector_key_tcp *key, *mask;};
struct flow_match_ipsec { struct flow_dissector_key_ipsec *key, *mask;};
struct flow_match_mpls { struct flow_dissector_key_mpls *key, *mask;};
struct flow_match_enc_keyid { struct flow_dissector_key_keyid *key, *mask;};
struct flow_match_enc_opts { struct flow_dissector_key_enc_opts *key, *mask;};
struct flow_match_ct { struct flow_dissector_key_ct *key, *mask;};
struct flow_match_pppoe { struct flow_dissector_key_pppoe *key, *mask;};
struct flow_match_l2tpv3 { struct flow_dissector_key_l2tpv3 *key, *mask;};
struct flow_rule;
void flow_rule_match_meta(const struct flow_rule *rule, struct flow_match_meta *out);void flow_rule_match_basic(const struct flow_rule *rule, struct flow_match_basic *out);void flow_rule_match_control(const struct flow_rule *rule, struct flow_match_control *out);void flow_rule_match_eth_addrs(const struct flow_rule *rule, struct flow_match_eth_addrs *out);void flow_rule_match_vlan(const struct flow_rule *rule, struct flow_match_vlan *out);void flow_rule_match_cvlan(const struct flow_rule *rule, struct flow_match_vlan *out);void flow_rule_match_arp(const struct flow_rule *rule, struct flow_match_arp *out);void flow_rule_match_ipv4_addrs(const struct flow_rule *rule, struct flow_match_ipv4_addrs *out);void flow_rule_match_ipv6_addrs(const struct flow_rule *rule, struct flow_match_ipv6_addrs *out);void flow_rule_match_ip(const struct flow_rule *rule, struct flow_match_ip *out);void flow_rule_match_ports(const struct flow_rule *rule, struct flow_match_ports *out);void flow_rule_match_ports_range(const struct flow_rule *rule, struct flow_match_ports_range *out);void flow_rule_match_tcp(const struct flow_rule *rule, struct flow_match_tcp *out);void flow_rule_match_ipsec(const struct flow_rule *rule, struct flow_match_ipsec *out);void flow_rule_match_icmp(const struct flow_rule *rule, struct flow_match_icmp *out);void flow_rule_match_mpls(const struct flow_rule *rule, struct flow_match_mpls *out);void flow_rule_match_enc_control(const struct flow_rule *rule, struct flow_match_control *out);void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule, struct flow_match_ipv4_addrs *out);void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule, struct flow_match_ipv6_addrs *out);void flow_rule_match_enc_ip(const struct flow_rule *rule, struct flow_match_ip *out);void flow_rule_match_enc_ports(const struct flow_rule *rule, struct flow_match_ports *out);void flow_rule_match_enc_keyid(const struct flow_rule *rule, struct flow_match_enc_keyid *out);void flow_rule_match_enc_opts(const struct flow_rule *rule, struct flow_match_enc_opts *out);void flow_rule_match_ct(const struct flow_rule *rule, struct flow_match_ct *out);void flow_rule_match_pppoe(const struct flow_rule *rule, struct flow_match_pppoe *out);void flow_rule_match_l2tpv3(const struct flow_rule *rule, struct flow_match_l2tpv3 *out);
enum flow_action_id { FLOW_ACTION_ACCEPT = 0, FLOW_ACTION_DROP, FLOW_ACTION_TRAP, FLOW_ACTION_GOTO, FLOW_ACTION_REDIRECT, FLOW_ACTION_MIRRED, FLOW_ACTION_REDIRECT_INGRESS, FLOW_ACTION_MIRRED_INGRESS, FLOW_ACTION_VLAN_PUSH, FLOW_ACTION_VLAN_POP, FLOW_ACTION_VLAN_MANGLE, FLOW_ACTION_TUNNEL_ENCAP, FLOW_ACTION_TUNNEL_DECAP, FLOW_ACTION_MANGLE, FLOW_ACTION_ADD, FLOW_ACTION_CSUM, FLOW_ACTION_MARK, FLOW_ACTION_PTYPE, FLOW_ACTION_PRIORITY, FLOW_ACTION_RX_QUEUE_MAPPING, FLOW_ACTION_WAKE, FLOW_ACTION_QUEUE, FLOW_ACTION_SAMPLE, FLOW_ACTION_POLICE, FLOW_ACTION_CT, FLOW_ACTION_CT_METADATA, FLOW_ACTION_MPLS_PUSH, FLOW_ACTION_MPLS_POP, FLOW_ACTION_MPLS_MANGLE, FLOW_ACTION_GATE, FLOW_ACTION_PPPOE_PUSH, FLOW_ACTION_JUMP, FLOW_ACTION_PIPE, FLOW_ACTION_VLAN_PUSH_ETH, FLOW_ACTION_VLAN_POP_ETH, FLOW_ACTION_CONTINUE, NUM_FLOW_ACTIONS,};
/* This is mirroring enum pedit_header_type definition for easy mapping between * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver. */enum flow_action_mangle_base { FLOW_ACT_MANGLE_UNSPEC = 0, FLOW_ACT_MANGLE_HDR_TYPE_ETH, FLOW_ACT_MANGLE_HDR_TYPE_IP4, FLOW_ACT_MANGLE_HDR_TYPE_IP6, FLOW_ACT_MANGLE_HDR_TYPE_TCP, FLOW_ACT_MANGLE_HDR_TYPE_UDP,};
enum flow_action_hw_stats_bit { FLOW_ACTION_HW_STATS_IMMEDIATE_BIT, FLOW_ACTION_HW_STATS_DELAYED_BIT, FLOW_ACTION_HW_STATS_DISABLED_BIT,
FLOW_ACTION_HW_STATS_NUM_BITS};
enum flow_action_hw_stats { FLOW_ACTION_HW_STATS_IMMEDIATE = BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT), FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT), FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE | FLOW_ACTION_HW_STATS_DELAYED, FLOW_ACTION_HW_STATS_DISABLED = BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT), FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,};
typedef void (*action_destr)(void *priv);
struct flow_action_cookie { u32 cookie_len; u8 cookie[];};
struct flow_action_cookie *flow_action_cookie_create(void *data, unsigned int len, gfp_t gfp);void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
struct flow_action_police { u32 burst; u64 rate_bytes_ps; u64 peakrate_bytes_ps; u32 avrate; u16 overhead; u64 burst_pkt; u64 rate_pkt_ps; u32 mtu; struct { enum flow_action_id act_id; u32 extval; } exceed, notexceed;};
struct flow_action_entry { enum flow_action_id id; u32 hw_index; unsigned long cookie; u64 miss_cookie; enum flow_action_hw_stats hw_stats; action_destr destructor; void *destructor_priv; union { u32 chain_index; /* FLOW_ACTION_GOTO */ struct net_device *dev; /* FLOW_ACTION_REDIRECT */ struct { /* FLOW_ACTION_VLAN */ u16 vid; __be16 proto; u8 prio; } vlan; struct { /* FLOW_ACTION_VLAN_PUSH_ETH */ unsigned char dst[ETH_ALEN]; unsigned char src[ETH_ALEN]; } vlan_push_eth; struct { /* FLOW_ACTION_MANGLE */ /* FLOW_ACTION_ADD */ enum flow_action_mangle_base htype; u32 offset; u32 mask; u32 val; } mangle; struct ip_tunnel_info *tunnel; /* FLOW_ACTION_TUNNEL_ENCAP */ u32 csum_flags; /* FLOW_ACTION_CSUM */ u32 mark; /* FLOW_ACTION_MARK */ u16 ptype; /* FLOW_ACTION_PTYPE */ u16 rx_queue; /* FLOW_ACTION_RX_QUEUE_MAPPING */ u32 priority; /* FLOW_ACTION_PRIORITY */ struct { /* FLOW_ACTION_QUEUE */ u32 ctx; u32 index; u8 vf; } queue; struct { /* FLOW_ACTION_SAMPLE */ struct psample_group *psample_group; u32 rate; u32 trunc_size; bool truncate; } sample; struct flow_action_police police; /* FLOW_ACTION_POLICE */ struct { /* FLOW_ACTION_CT */ int action; u16 zone; struct nf_flowtable *flow_table; } ct; struct { unsigned long cookie; u32 mark; u32 labels[4]; bool orig_dir; } ct_metadata; struct { /* FLOW_ACTION_MPLS_PUSH */ u32 label; __be16 proto; u8 tc; u8 bos; u8 ttl; } mpls_push; struct { /* FLOW_ACTION_MPLS_POP */ __be16 proto; } mpls_pop; struct { /* FLOW_ACTION_MPLS_MANGLE */ u32 label; u8 tc; u8 bos; u8 ttl; } mpls_mangle; struct { s32 prio; u64 basetime; u64 cycletime; u64 cycletimeext; u32 num_entries; struct action_gate_entry *entries; } gate; struct { /* FLOW_ACTION_PPPOE_PUSH */ u16 sid; } pppoe; }; struct flow_action_cookie *user_cookie; /* user defined action cookie */};
struct flow_action { unsigned int num_entries; struct flow_action_entry entries[] __counted_by(num_entries);};
static inline bool flow_action_has_entries(const struct flow_action *action){ return action->num_entries;}
/** * flow_offload_has_one_action() - check if exactly one action is present * @action: tc filter flow offload action * * Return: true if exactly one action is present. */static inline bool flow_offload_has_one_action(const struct flow_action *action){ return action->num_entries == 1;}
static inline bool flow_action_is_last_entry(const struct flow_action *action, const struct flow_action_entry *entry){ return entry == &action->entries[action->num_entries - 1];}
#define flow_action_for_each(__i, __act, __actions) \ for (__i = 0, __act = &(__actions)->entries[0]; \ __i < (__actions)->num_entries; \ __act = &(__actions)->entries[++__i])
static inline boolflow_action_mixed_hw_stats_check(const struct flow_action *action, struct netlink_ext_ack *extack){ const struct flow_action_entry *action_entry; u8 last_hw_stats; int i;
if (flow_offload_has_one_action(action)) return true;
flow_action_for_each(i, action_entry, action) { if (i && action_entry->hw_stats != last_hw_stats) { NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported"); return false; } last_hw_stats = action_entry->hw_stats; } return true;}
static inline const struct flow_action_entry *flow_action_first_entry_get(const struct flow_action *action){ WARN_ON(!flow_action_has_entries(action)); return &action->entries[0];}
static inline bool__flow_action_hw_stats_check(const struct flow_action *action, struct netlink_ext_ack *extack, bool check_allow_bit, enum flow_action_hw_stats_bit allow_bit){ const struct flow_action_entry *action_entry;
if (!flow_action_has_entries(action)) return true; if (!flow_action_mixed_hw_stats_check(action, extack)) return false;
action_entry = flow_action_first_entry_get(action);
/* Zero is not a legal value for hw_stats, catch anyone passing it */ WARN_ON_ONCE(!action_entry->hw_stats);
if (!check_allow_bit && ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) { NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\""); return false; } else if (check_allow_bit && !(action_entry->hw_stats & BIT(allow_bit))) { NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type"); return false; } return true;}
static inline boolflow_action_hw_stats_check(const struct flow_action *action, struct netlink_ext_ack *extack, enum flow_action_hw_stats_bit allow_bit){ return __flow_action_hw_stats_check(action, extack, true, allow_bit);}
static inline boolflow_action_basic_hw_stats_check(const struct flow_action *action, struct netlink_ext_ack *extack){ return __flow_action_hw_stats_check(action, extack, false, 0);}
struct flow_rule { struct flow_match match; struct flow_action action;};
struct flow_rule *flow_rule_alloc(unsigned int num_actions);
static inline bool flow_rule_match_key(const struct flow_rule *rule, enum flow_dissector_key_id key){ return dissector_uses_key(rule->match.dissector, key);}
/** * flow_rule_is_supp_control_flags() - check for supported control flags * @supp_flags: control flags supported by driver * @ctrl_flags: control flags present in rule * @extack: The netlink extended ACK for reporting errors. * * Return: true if only supported control flags are set, false otherwise. */static inline bool flow_rule_is_supp_control_flags(const u32 supp_flags, const u32 ctrl_flags, struct netlink_ext_ack *extack){ if (likely((ctrl_flags & ~supp_flags) == 0)) return true;
NL_SET_ERR_MSG_FMT_MOD(extack, "Unsupported match on control.flags %#x", ctrl_flags);
return false;}
/** * flow_rule_is_supp_enc_control_flags() - check for supported control flags * @supp_enc_flags: encapsulation control flags supported by driver * @enc_ctrl_flags: encapsulation control flags present in rule * @extack: The netlink extended ACK for reporting errors. * * Return: true if only supported control flags are set, false otherwise. */static inline bool flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags, const u32 enc_ctrl_flags, struct netlink_ext_ack *extack){ if (likely((enc_ctrl_flags & ~supp_enc_flags) == 0)) return true;
NL_SET_ERR_MSG_FMT_MOD(extack, "Unsupported match on enc_control.flags %#x", enc_ctrl_flags);
return false;}
/** * flow_rule_has_control_flags() - check for presence of any control flags * @ctrl_flags: control flags present in rule * @extack: The netlink extended ACK for reporting errors. * * Return: true if control flags are set, false otherwise. */static inline bool flow_rule_has_control_flags(const u32 ctrl_flags, struct netlink_ext_ack *extack){ return !flow_rule_is_supp_control_flags(0, ctrl_flags, extack);}
/** * flow_rule_has_enc_control_flags() - check for presence of any control flags * @enc_ctrl_flags: encapsulation control flags present in rule * @extack: The netlink extended ACK for reporting errors. * * Return: true if control flags are set, false otherwise. */static inline bool flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags, struct netlink_ext_ack *extack){ return !flow_rule_is_supp_enc_control_flags(0, enc_ctrl_flags, extack);}
/** * flow_rule_match_has_control_flags() - match and check for any control flags * @rule: The flow_rule under evaluation. * @extack: The netlink extended ACK for reporting errors. * * Return: true if control flags are set, false otherwise. */static inline bool flow_rule_match_has_control_flags(const struct flow_rule *rule, struct netlink_ext_ack *extack){ struct flow_match_control match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) return false;
flow_rule_match_control(rule, &match);
return flow_rule_has_control_flags(match.mask->flags, extack);}
struct flow_stats { u64 pkts; u64 bytes; u64 drops; u64 lastused; enum flow_action_hw_stats used_hw_stats; bool used_hw_stats_valid;};
static inline void flow_stats_update(struct flow_stats *flow_stats, u64 bytes, u64 pkts, u64 drops, u64 lastused, enum flow_action_hw_stats used_hw_stats){ flow_stats->pkts += pkts; flow_stats->bytes += bytes; flow_stats->drops += drops; flow_stats->lastused = max_t(u64, flow_stats->lastused, lastused);
/* The driver should pass value with a maximum of one bit set. * Passing FLOW_ACTION_HW_STATS_ANY is invalid. */ WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY); flow_stats->used_hw_stats |= used_hw_stats; flow_stats->used_hw_stats_valid = true;}
enum flow_block_command { FLOW_BLOCK_BIND, FLOW_BLOCK_UNBIND,};
enum flow_block_binder_type { FLOW_BLOCK_BINDER_TYPE_UNSPEC, FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS, FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS, FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP, FLOW_BLOCK_BINDER_TYPE_RED_MARK,};
struct flow_block { struct list_head cb_list;};
struct netlink_ext_ack;
struct flow_block_offload { enum flow_block_command command; enum flow_block_binder_type binder_type; bool block_shared; bool unlocked_driver_cb; struct net *net; struct flow_block *block; struct list_head cb_list; struct list_head *driver_block_list; struct netlink_ext_ack *extack; struct Qdisc *sch; struct list_head *cb_list_head;};
enum tc_setup_type;typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data, void *cb_priv);
struct flow_block_cb;
struct flow_block_indr { struct list_head list; struct net_device *dev; struct Qdisc *sch; enum flow_block_binder_type binder_type; void *data; void *cb_priv; void (*cleanup)(struct flow_block_cb *block_cb);};
struct flow_block_cb { struct list_head driver_list; struct list_head list; flow_setup_cb_t *cb; void *cb_ident; void *cb_priv; void (*release)(void *cb_priv); struct flow_block_indr indr; unsigned int refcnt;};
struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb, void *cb_ident, void *cb_priv, void (*release)(void *cb_priv));struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb, void *cb_ident, void *cb_priv, void (*release)(void *cb_priv), struct flow_block_offload *bo, struct net_device *dev, struct Qdisc *sch, void *data, void *indr_cb_priv, void (*cleanup)(struct flow_block_cb *block_cb));void flow_block_cb_free(struct flow_block_cb *block_cb);
struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block, flow_setup_cb_t *cb, void *cb_ident);
void *flow_block_cb_priv(struct flow_block_cb *block_cb);void flow_block_cb_incref(struct flow_block_cb *block_cb);unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
static inline void flow_block_cb_add(struct flow_block_cb *block_cb, struct flow_block_offload *offload){ list_add_tail(&block_cb->list, &offload->cb_list);}
static inline void flow_block_cb_remove(struct flow_block_cb *block_cb, struct flow_block_offload *offload){ list_move(&block_cb->list, &offload->cb_list);}
static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb, struct flow_block_offload *offload){ list_del(&block_cb->indr.list); list_move(&block_cb->list, &offload->cb_list);}
bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident, struct list_head *driver_block_list);
int flow_block_cb_setup_simple(struct flow_block_offload *f, struct list_head *driver_list, flow_setup_cb_t *cb, void *cb_ident, void *cb_priv, bool ingress_only);
enum flow_cls_command { FLOW_CLS_REPLACE, FLOW_CLS_DESTROY, FLOW_CLS_STATS, FLOW_CLS_TMPLT_CREATE, FLOW_CLS_TMPLT_DESTROY,};
struct flow_cls_common_offload { u32 chain_index; __be16 protocol; u32 prio; bool skip_sw; struct netlink_ext_ack *extack;};
struct flow_cls_offload { struct flow_cls_common_offload common; enum flow_cls_command command; bool use_act_stats; unsigned long cookie; struct flow_rule *rule; struct flow_stats stats; u32 classid;};
enum offload_act_command { FLOW_ACT_REPLACE, FLOW_ACT_DESTROY, FLOW_ACT_STATS,};
struct flow_offload_action { struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/ enum offload_act_command command; enum flow_action_id id; u32 index; unsigned long cookie; struct flow_stats stats; struct flow_action action;};
struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
static inline struct flow_rule *flow_cls_offload_flow_rule(const struct flow_cls_offload *flow_cmd){ return flow_cmd->rule;}
static inline void flow_block_init(struct flow_block *flow_block){ INIT_LIST_HEAD(&flow_block->cb_list);}
typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv, enum tc_setup_type type, void *type_data, void *data, void (*cleanup)(struct flow_block_cb *block_cb));
int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv, void (*release)(void *cb_priv));int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch, enum tc_setup_type type, void *data, struct flow_block_offload *bo, void (*cleanup)(struct flow_block_cb *block_cb));bool flow_indr_dev_exists(void);
#endif /* _NET_FLOW_OFFLOAD_H */