X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fflow.h;h=5be481e6b2635a796065d51085b6d19294a7fd99;hb=96628ae85fe26ac86d35bca5f4c288e56048c3d6;hp=997692c58df77cbff59ea48e890be580936a2bc6;hpb=df2c07f4338faac04f4969f243fe4e8083b309ac;p=openvswitch diff --git a/datapath/flow.h b/datapath/flow.h index 997692c5..5be481e6 100644 --- a/datapath/flow.h +++ b/datapath/flow.h @@ -1,9 +1,19 @@ /* - * Copyright (c) 2009, 2010, 2011 Nicira Networks. - * Distributed under the terms of the GNU GPL version 2. + * Copyright (c) 2007-2011 Nicira, Inc. * - * Significant portions of this file may be copied from parts of the Linux - * kernel, by Linus Torvalds and others. + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA */ #ifndef FLOW_H @@ -11,6 +21,7 @@ #include #include +#include #include #include #include @@ -18,9 +29,8 @@ #include #include #include - -#include "openvswitch/datapath-protocol.h" -#include "table.h" +#include +#include struct sk_buff; @@ -32,8 +42,11 @@ struct sw_flow_actions { struct sw_flow_key { struct { - __be64 tun_id; /* Encapsulating tunnel ID. */ - u16 in_port; /* Input switch port. */ + __be64 tun_id; /* Encapsulating tunnel ID. */ + u32 priority; /* Packet QoS priority. */ + u16 in_port; /* Input switch port (or DP_MAX_PORTS). */ + } phy; + struct { u8 src[ETH_ALEN]; /* Ethernet source address. */ u8 dst[ETH_ALEN]; /* Ethernet destination address. */ __be16 tci; /* 0 if no VLAN, VLAN_TAG_PRESENT set otherwise. */ @@ -41,7 +54,9 @@ struct sw_flow_key { } eth; struct { u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */ - u8 tos; /* IP ToS (DSCP field, 6 bits). */ + u8 tos; /* IP ToS. */ + u8 ttl; /* IP TTL/hop limit. */ + u8 frag; /* One of OVS_FRAG_TYPE_*. */ } ip; union { struct { @@ -65,6 +80,7 @@ struct sw_flow_key { struct in6_addr src; /* IPv6 source address. */ struct in6_addr dst; /* IPv6 destination address. */ } addr; + __be32 label; /* IPv6 flow label. */ struct { __be16 src; /* TCP/UDP source port. */ __be16 dst; /* TCP/UDP destination port. */ @@ -80,7 +96,8 @@ struct sw_flow_key { struct sw_flow { struct rcu_head rcu; - struct tbl_node tbl_node; + struct hlist_node hash_node[2]; + u32 hash; struct sw_flow_key key; struct sw_flow_actions __rcu *sf_acts; @@ -95,8 +112,7 @@ struct sw_flow { u8 tcp_flags; /* Union of seen TCP flags. */ }; -struct arp_eth_header -{ +struct arp_eth_header { __be16 ar_hrd; /* format of hardware address */ __be16 ar_pro; /* format of protocol address */ unsigned char ar_hln; /* length of hardware address */ @@ -110,54 +126,82 @@ struct arp_eth_header unsigned char ar_tip[4]; /* target IP address */ } __packed; -int flow_init(void); -void flow_exit(void); - -struct sw_flow *flow_alloc(void); -void flow_deferred_free(struct sw_flow *); -void flow_free_tbl(struct tbl_node *); +int ovs_flow_init(void); +void ovs_flow_exit(void); -struct sw_flow_actions *flow_actions_alloc(const struct nlattr *); -void flow_deferred_free_acts(struct sw_flow_actions *); +struct sw_flow *ovs_flow_alloc(void); +void ovs_flow_deferred_free(struct sw_flow *); -void flow_hold(struct sw_flow *); -void flow_put(struct sw_flow *); +struct sw_flow_actions *ovs_flow_actions_alloc(const struct nlattr *); +void ovs_flow_deferred_free_acts(struct sw_flow_actions *); -int flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *, - int *key_lenp, bool *is_frag); -void flow_used(struct sw_flow *, struct sk_buff *); -u64 flow_used_time(unsigned long flow_jiffies); +void ovs_flow_hold(struct sw_flow *); +void ovs_flow_put(struct sw_flow *); -u32 flow_hash(const struct sw_flow_key *, int key_lenp); -int flow_cmp(const struct tbl_node *, void *target, int len); +int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *, + int *key_lenp); +void ovs_flow_used(struct sw_flow *, struct sk_buff *); +u64 ovs_flow_used_time(unsigned long flow_jiffies); /* Upper bound on the length of a nlattr-formatted flow key. The longest * nlattr-formatted flow key would be: * * struct pad nl hdr total * ------ --- ------ ----- + * OVS_KEY_ATTR_PRIORITY 4 -- 4 8 * OVS_KEY_ATTR_TUN_ID 8 -- 4 12 * OVS_KEY_ATTR_IN_PORT 4 -- 4 8 * OVS_KEY_ATTR_ETHERNET 12 -- 4 16 * OVS_KEY_ATTR_8021Q 4 -- 4 8 * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 - * OVS_KEY_ATTR_IPV6 34 2 4 40 + * OVS_KEY_ATTR_IPV6 40 -- 4 44 * OVS_KEY_ATTR_ICMPV6 2 2 4 8 * OVS_KEY_ATTR_ND 28 -- 4 32 * ------------------------------------------------- - * total 132 + * total 144 */ -#define FLOW_BUFSIZE 132 +#define FLOW_BUFSIZE 144 -int flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *); -int flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp, +int ovs_flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *); +int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp, const struct nlattr *); -int flow_metadata_from_nlattrs(u16 *in_port, __be64 *tun_id, - const struct nlattr *); +int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port, __be64 *tun_id, + const struct nlattr *); + +#define MAX_ACTIONS_BUFSIZE (16 * 1024) +#define TBL_MIN_BUCKETS 1024 -static inline struct sw_flow *flow_cast(const struct tbl_node *node) +struct flow_table { + struct flex_array *buckets; + unsigned int count, n_buckets; + struct rcu_head rcu; + int node_ver; + u32 hash_seed; + bool keep_flows; +}; + +static inline int ovs_flow_tbl_count(struct flow_table *table) { - return container_of(node, struct sw_flow, tbl_node); + return table->count; } +static inline int ovs_flow_tbl_need_to_expand(struct flow_table *table) +{ + return (table->count > table->n_buckets); +} + +struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *table, + struct sw_flow_key *key, int len); +void ovs_flow_tbl_destroy(struct flow_table *table); +void ovs_flow_tbl_deferred_destroy(struct flow_table *table); +struct flow_table *ovs_flow_tbl_alloc(int new_size); +struct flow_table *ovs_flow_tbl_expand(struct flow_table *table); +struct flow_table *ovs_flow_tbl_rehash(struct flow_table *table); +void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow); +void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow); +u32 ovs_flow_hash(const struct sw_flow_key *key, int key_len); + +struct sw_flow *ovs_flow_tbl_next(struct flow_table *table, u32 *bucket, u32 *idx); +extern const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1]; + #endif /* flow.h */