X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fflow.h;h=5be481e6b2635a796065d51085b6d19294a7fd99;hb=080437614b40799853a42806fa29e7c71f42210d;hp=c08d3dfeb80bb0bf91a0b40ca020d270cae25832;hpb=a61680c6d15fa1f1ae3072a83c0e3d7ed08f6048;p=openvswitch diff --git a/datapath/flow.h b/datapath/flow.h index c08d3dfe..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 @@ -34,7 +44,7 @@ struct sw_flow_key { struct { __be64 tun_id; /* Encapsulating tunnel ID. */ u32 priority; /* Packet QoS priority. */ - u16 in_port; /* Input switch port (or USHRT_MAX). */ + u16 in_port; /* Input switch port (or DP_MAX_PORTS). */ } phy; struct { u8 src[ETH_ALEN]; /* Ethernet source address. */ @@ -44,9 +54,9 @@ struct sw_flow_key { } eth; struct { u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */ - u8 tos; /* IP ToS. */ - u8 ttl; /* IP TTL/hop limit. */ - u8 frag; /* One of OVS_FRAG_TYPE_*. */ + u8 tos; /* IP ToS. */ + u8 ttl; /* IP TTL/hop limit. */ + u8 frag; /* One of OVS_FRAG_TYPE_*. */ } ip; union { struct { @@ -70,7 +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. */ + __be32 label; /* IPv6 flow label. */ struct { __be16 src; /* TCP/UDP source port. */ __be16 dst; /* TCP/UDP destination port. */ @@ -86,7 +96,7 @@ struct sw_flow_key { struct sw_flow { struct rcu_head rcu; - struct hlist_node hash_node; + struct hlist_node hash_node[2]; u32 hash; struct sw_flow_key key; @@ -116,22 +126,22 @@ struct arp_eth_header { unsigned char ar_tip[4]; /* target IP address */ } __packed; -int flow_init(void); -void flow_exit(void); +int ovs_flow_init(void); +void ovs_flow_exit(void); -struct sw_flow *flow_alloc(void); -void flow_deferred_free(struct sw_flow *); +struct sw_flow *ovs_flow_alloc(void); +void ovs_flow_deferred_free(struct sw_flow *); -struct sw_flow_actions *flow_actions_alloc(const struct nlattr *); -void flow_deferred_free_acts(struct sw_flow_actions *); +struct sw_flow_actions *ovs_flow_actions_alloc(const struct nlattr *); +void ovs_flow_deferred_free_acts(struct sw_flow_actions *); -void flow_hold(struct sw_flow *); -void flow_put(struct sw_flow *); +void ovs_flow_hold(struct sw_flow *); +void ovs_flow_put(struct sw_flow *); -int flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *, - int *key_lenp); -void flow_used(struct sw_flow *, struct sk_buff *); -u64 flow_used_time(unsigned long flow_jiffies); +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: @@ -152,41 +162,46 @@ u64 flow_used_time(unsigned long flow_jiffies); */ #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(u32 *priority, 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 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 flow_tbl_count(struct flow_table *table) +static inline int ovs_flow_tbl_count(struct flow_table *table) { return table->count; } -static inline int flow_tbl_need_to_expand(struct flow_table *table) +static inline int ovs_flow_tbl_need_to_expand(struct flow_table *table) { return (table->count > table->n_buckets); } -struct sw_flow *flow_tbl_lookup(struct flow_table *table, - struct sw_flow_key *key, int len); -void flow_tbl_destroy(struct flow_table *table); -void flow_tbl_deferred_destroy(struct flow_table *table); -struct flow_table *flow_tbl_alloc(int new_size); -struct flow_table *flow_tbl_expand(struct flow_table *table); -void flow_tbl_insert(struct flow_table *table, struct sw_flow *flow); -void flow_tbl_remove(struct flow_table *table, struct sw_flow *flow); -u32 flow_hash(const struct sw_flow_key *key, int key_len); - -struct sw_flow *flow_tbl_next(struct flow_table *table, u32 *bucket, u32 *idx); -extern const u32 ovs_key_lens[OVS_KEY_ATTR_MAX + 1]; +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 */