mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-09 06:26:39 +07:00
e298e50570
With mega flow implementation ovs flow can be shared between multiple CPUs which makes stats updates highly contended operation. This patch uses per-CPU stats in cases where a flow is likely to be shared (if there is a wildcard in the 5-tuple and therefore likely to be spread by RSS). In other situations, it uses the current strategy, saving memory and allocation time. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
201 lines
5.7 KiB
C
201 lines
5.7 KiB
C
/*
|
|
* Copyright (c) 2007-2013 Nicira, Inc.
|
|
*
|
|
* 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
|
|
#define FLOW_H 1
|
|
|
|
#include <linux/cache.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/openvswitch.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/time.h>
|
|
#include <linux/flex_array.h>
|
|
#include <net/inet_ecn.h>
|
|
|
|
struct sk_buff;
|
|
|
|
/* Used to memset ovs_key_ipv4_tunnel padding. */
|
|
#define OVS_TUNNEL_KEY_SIZE \
|
|
(offsetof(struct ovs_key_ipv4_tunnel, ipv4_ttl) + \
|
|
FIELD_SIZEOF(struct ovs_key_ipv4_tunnel, ipv4_ttl))
|
|
|
|
struct ovs_key_ipv4_tunnel {
|
|
__be64 tun_id;
|
|
__be32 ipv4_src;
|
|
__be32 ipv4_dst;
|
|
__be16 tun_flags;
|
|
u8 ipv4_tos;
|
|
u8 ipv4_ttl;
|
|
};
|
|
|
|
static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
|
|
const struct iphdr *iph, __be64 tun_id,
|
|
__be16 tun_flags)
|
|
{
|
|
tun_key->tun_id = tun_id;
|
|
tun_key->ipv4_src = iph->saddr;
|
|
tun_key->ipv4_dst = iph->daddr;
|
|
tun_key->ipv4_tos = iph->tos;
|
|
tun_key->ipv4_ttl = iph->ttl;
|
|
tun_key->tun_flags = tun_flags;
|
|
|
|
/* clear struct padding. */
|
|
memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
|
|
sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
|
|
}
|
|
|
|
struct sw_flow_key {
|
|
struct ovs_key_ipv4_tunnel tun_key; /* Encapsulating tunnel key. */
|
|
struct {
|
|
u32 priority; /* Packet QoS priority. */
|
|
u32 skb_mark; /* SKB mark. */
|
|
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. */
|
|
__be16 type; /* Ethernet frame type. */
|
|
} 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_*. */
|
|
} ip;
|
|
union {
|
|
struct {
|
|
struct {
|
|
__be32 src; /* IP source address. */
|
|
__be32 dst; /* IP destination address. */
|
|
} addr;
|
|
union {
|
|
struct {
|
|
__be16 src; /* TCP/UDP/SCTP source port. */
|
|
__be16 dst; /* TCP/UDP/SCTP destination port. */
|
|
__be16 flags; /* TCP flags. */
|
|
} tp;
|
|
struct {
|
|
u8 sha[ETH_ALEN]; /* ARP source hardware address. */
|
|
u8 tha[ETH_ALEN]; /* ARP target hardware address. */
|
|
} arp;
|
|
};
|
|
} ipv4;
|
|
struct {
|
|
struct {
|
|
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/SCTP source port. */
|
|
__be16 dst; /* TCP/UDP/SCTP destination port. */
|
|
__be16 flags; /* TCP flags. */
|
|
} tp;
|
|
struct {
|
|
struct in6_addr target; /* ND target address. */
|
|
u8 sll[ETH_ALEN]; /* ND source link layer address. */
|
|
u8 tll[ETH_ALEN]; /* ND target link layer address. */
|
|
} nd;
|
|
} ipv6;
|
|
};
|
|
} __aligned(BITS_PER_LONG/8); /* Ensure that we can do comparisons as longs. */
|
|
|
|
struct sw_flow_key_range {
|
|
unsigned short int start;
|
|
unsigned short int end;
|
|
};
|
|
|
|
struct sw_flow_mask {
|
|
int ref_count;
|
|
struct rcu_head rcu;
|
|
struct list_head list;
|
|
struct sw_flow_key_range range;
|
|
struct sw_flow_key key;
|
|
};
|
|
|
|
struct sw_flow_match {
|
|
struct sw_flow_key *key;
|
|
struct sw_flow_key_range range;
|
|
struct sw_flow_mask *mask;
|
|
};
|
|
|
|
struct sw_flow_actions {
|
|
struct rcu_head rcu;
|
|
u32 actions_len;
|
|
struct nlattr actions[];
|
|
};
|
|
|
|
struct flow_stats {
|
|
u64 packet_count; /* Number of packets matched. */
|
|
u64 byte_count; /* Number of bytes matched. */
|
|
unsigned long used; /* Last used time (in jiffies). */
|
|
spinlock_t lock; /* Lock for atomic stats update. */
|
|
__be16 tcp_flags; /* Union of seen TCP flags. */
|
|
};
|
|
|
|
struct sw_flow_stats {
|
|
bool is_percpu;
|
|
union {
|
|
struct flow_stats *stat;
|
|
struct flow_stats __percpu *cpu_stats;
|
|
};
|
|
};
|
|
|
|
struct sw_flow {
|
|
struct rcu_head rcu;
|
|
struct hlist_node hash_node[2];
|
|
u32 hash;
|
|
|
|
struct sw_flow_key key;
|
|
struct sw_flow_key unmasked_key;
|
|
struct sw_flow_mask *mask;
|
|
struct sw_flow_actions __rcu *sf_acts;
|
|
struct sw_flow_stats stats;
|
|
};
|
|
|
|
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 */
|
|
unsigned char ar_pln; /* length of protocol address */
|
|
__be16 ar_op; /* ARP opcode (command) */
|
|
|
|
/* Ethernet+IPv4 specific members. */
|
|
unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
|
|
unsigned char ar_sip[4]; /* sender IP address */
|
|
unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
|
|
unsigned char ar_tip[4]; /* target IP address */
|
|
} __packed;
|
|
|
|
void ovs_flow_stats_update(struct sw_flow *flow, struct sk_buff *skb);
|
|
void ovs_flow_stats_get(struct sw_flow *flow, struct ovs_flow_stats *stats,
|
|
unsigned long *used, __be16 *tcp_flags);
|
|
void ovs_flow_stats_clear(struct sw_flow *flow);
|
|
u64 ovs_flow_used_time(unsigned long flow_jiffies);
|
|
|
|
int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);
|
|
|
|
#endif /* flow.h */
|