GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-20 21:51:05 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch

Browse source 
Jesse Gross says:

====================
[GIT net-next] Open vSwitch

Open vSwitch changes for net-next/3.14. Highlights are:
 * Performance improvements in the mechanism to get packets to userspace
   using memory mapped netlink and skb zero copy where appropriate.
 * Per-cpu flow stats in situations where flows are likely to be shared
   across CPUs. Standard flow stats are used in other situations to save
   memory and allocation time.
 * A handful of code cleanups and rationalization.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2014-01-06 19:48:38 -05:00
commit 39b6b2992f
17 changed files with 483 additions and 213 deletions
Download patch file Download diff file Expand all files Collapse all files

60
net/openvswitch/flow_table.c
View file

@ -44,8 +44,6 @@
#include <net/ipv6.h>
#include <net/ndisc.h>
#include "datapath.h"
#define TBL_MIN_BUCKETS 1024
#define REHASH_INTERVAL (10 * 60 * HZ)
@ -72,19 +70,42 @@ void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
*d++ = *s++ & *m++;
}
struct sw_flow *ovs_flow_alloc(void)
struct sw_flow *ovs_flow_alloc(bool percpu_stats)
{
struct sw_flow *flow;
int cpu;
flow = kmem_cache_alloc(flow_cache, GFP_KERNEL);
if (!flow)
return ERR_PTR(-ENOMEM);
spin_lock_init(&flow->lock);
flow->sf_acts = NULL;
flow->mask = NULL;
flow->stats.is_percpu = percpu_stats;
if (!percpu_stats) {
flow->stats.stat = kzalloc(sizeof(*flow->stats.stat), GFP_KERNEL);
if (!flow->stats.stat)
goto err;
spin_lock_init(&flow->stats.stat->lock);
} else {
flow->stats.cpu_stats = alloc_percpu(struct flow_stats);
if (!flow->stats.cpu_stats)
goto err;
for_each_possible_cpu(cpu) {
struct flow_stats *cpu_stats;
cpu_stats = per_cpu_ptr(flow->stats.cpu_stats, cpu);
spin_lock_init(&cpu_stats->lock);
}
}
return flow;
err:
kfree(flow);
return ERR_PTR(-ENOMEM);
}
int ovs_flow_tbl_count(struct flow_table *table)
@ -118,6 +139,10 @@ static struct flex_array *alloc_buckets(unsigned int n_buckets)
static void flow_free(struct sw_flow *flow)
{
kfree((struct sf_flow_acts __force *)flow->sf_acts);
if (flow->stats.is_percpu)
free_percpu(flow->stats.cpu_stats);
else
kfree(flow->stats.stat);
kmem_cache_free(flow_cache, flow);
}
@ -128,13 +153,6 @@ static void rcu_free_flow_callback(struct rcu_head *rcu)
flow_free(flow);
}
static void rcu_free_sw_flow_mask_cb(struct rcu_head *rcu)
{
struct sw_flow_mask *mask = container_of(rcu, struct sw_flow_mask, rcu);
kfree(mask);
}
static void flow_mask_del_ref(struct sw_flow_mask *mask, bool deferred)
{
if (!mask)
@ -146,7 +164,7 @@ static void flow_mask_del_ref(struct sw_flow_mask *mask, bool deferred)
if (!mask->ref_count) {
list_del_rcu(&mask->list);
if (deferred)
call_rcu(&mask->rcu, rcu_free_sw_flow_mask_cb);
kfree_rcu(mask, rcu);
else
kfree(mask);
}
@ -429,11 +447,11 @@ static struct sw_flow *masked_flow_lookup(struct table_instance *ti,
return NULL;
}
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *tbl,
struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *tbl,
const struct sw_flow_key *key,
u32 *n_mask_hit)
{
struct table_instance *ti = rcu_dereference(tbl->ti);
struct table_instance *ti = rcu_dereference_ovsl(tbl->ti);
struct sw_flow_mask *mask;
struct sw_flow *flow;
@ -447,6 +465,14 @@ struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *tbl,
return NULL;
}
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *tbl,
const struct sw_flow_key *key)
{
u32 __always_unused n_mask_hit;
return ovs_flow_tbl_lookup_stats(tbl, key, &n_mask_hit);
}
int ovs_flow_tbl_num_masks(const struct flow_table *table)
{
struct sw_flow_mask *mask;
@ -514,11 +540,7 @@ static struct sw_flow_mask *flow_mask_find(const struct flow_table *tbl,
return NULL;
}
/**
* add a new mask into the mask list.
* The caller needs to make sure that 'mask' is not the same
* as any masks that are already on the list.
*/
/* Add 'mask' into the mask list, if it is not already there. */
static int flow_mask_insert(struct flow_table *tbl, struct sw_flow *flow,
struct sw_flow_mask *new)
{