net: openvswitch: rename flow_stats to sw_flow_stats

There is a flow_stats structure defined in include/net/flow_offload.h
and a follow up patch adds #include <net/flow_offload.h> to
net/sch_generic.h.

This breaks compilation since OVS codebase includes net/sock.h which
pulls in linux/filter.h which includes net/sch_generic.h.

In file included from ./include/net/sch_generic.h:18:0,
                 from ./include/linux/filter.h:25,
                 from ./include/net/sock.h:59,
                 from ./include/linux/tcp.h:19,
                 from net/openvswitch/datapath.c:24

This definition takes precedence on OVS since it is placed in the
networking core, so rename flow_stats in OVS to sw_flow_stats since
this structure is contained in sw_flow.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index dca3b1e..bc89e16 100644 (file)
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -59,7 +59,7 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies)
 void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags,
                           const struct sk_buff *skb)
 {
-       struct flow_stats *stats;
+       struct sw_flow_stats *stats;
        unsigned int cpu = smp_processor_id();
        int len = skb->len + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
 
@@ -87,7 +87,7 @@ void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags,
                        if (likely(flow->stats_last_writer != -1) &&
                            likely(!rcu_access_pointer(flow->stats[cpu]))) {
                                /* Try to allocate CPU-specific stats. */
-                               struct flow_stats *new_stats;
+                               struct sw_flow_stats *new_stats;
 
                                new_stats =
                                        kmem_cache_alloc_node(flow_stats_cache,
@@ -134,7 +134,7 @@ void ovs_flow_stats_get(const struct sw_flow *flow,
 
        /* We open code this to make sure cpu 0 is always considered */
        for (cpu = 0; cpu < nr_cpu_ids; cpu = cpumask_next(cpu, &flow->cpu_used_mask)) {
-               struct flow_stats *stats = rcu_dereference_ovsl(flow->stats[cpu]);
+               struct sw_flow_stats *stats = rcu_dereference_ovsl(flow->stats[cpu]);
 
                if (stats) {
                        /* Local CPU may write on non-local stats, so we must
@@ -158,7 +158,7 @@ void ovs_flow_stats_clear(struct sw_flow *flow)
 
        /* We open code this to make sure cpu 0 is always considered */
        for (cpu = 0; cpu < nr_cpu_ids; cpu = cpumask_next(cpu, &flow->cpu_used_mask)) {
-               struct flow_stats *stats = ovsl_dereference(flow->stats[cpu]);
+               struct sw_flow_stats *stats = ovsl_dereference(flow->stats[cpu]);
 
                if (stats) {
                        spin_lock_bh(&stats->lock);

diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 3e2cc22..a5506e2 100644 (file)
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -194,7 +194,7 @@ struct sw_flow_actions {
        struct nlattr actions[];
 };
 
-struct flow_stats {
+struct sw_flow_stats {
        u64 packet_count;               /* Number of packets matched. */
        u64 byte_count;                 /* Number of bytes matched. */
        unsigned long used;             /* Last used time (in jiffies). */
@@ -216,7 +216,7 @@ struct sw_flow {
        struct cpumask cpu_used_mask;
        struct sw_flow_mask *mask;
        struct sw_flow_actions __rcu *sf_acts;
-       struct flow_stats __rcu *stats[]; /* One for each CPU.  First one
+       struct sw_flow_stats __rcu *stats[]; /* One for each CPU.  First one
                                           * is allocated at flow creation time,
                                           * the rest are allocated on demand
                                           * while holding the 'stats[0].lock'.

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 988fd8a..cf3582c 100644 (file)
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -66,7 +66,7 @@ void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
 struct sw_flow *ovs_flow_alloc(void)
 {
        struct sw_flow *flow;
-       struct flow_stats *stats;
+       struct sw_flow_stats *stats;
 
        flow = kmem_cache_zalloc(flow_cache, GFP_KERNEL);
        if (!flow)
@@ -110,7 +110,7 @@ static void flow_free(struct sw_flow *flow)
        for (cpu = 0; cpu < nr_cpu_ids; cpu = cpumask_next(cpu, &flow->cpu_used_mask))
                if (flow->stats[cpu])
                        kmem_cache_free(flow_stats_cache,
-                                       (struct flow_stats __force *)flow->stats[cpu]);
+                                       (struct sw_flow_stats __force *)flow->stats[cpu]);
        kmem_cache_free(flow_cache, flow);
 }
 
@@ -712,13 +712,13 @@ int ovs_flow_init(void)
 
        flow_cache = kmem_cache_create("sw_flow", sizeof(struct sw_flow)
                                       + (nr_cpu_ids
-                                         * sizeof(struct flow_stats *)),
+                                         * sizeof(struct sw_flow_stats *)),
                                       0, 0, NULL);
        if (flow_cache == NULL)
                return -ENOMEM;
 
        flow_stats_cache
-               = kmem_cache_create("sw_flow_stats", sizeof(struct flow_stats),
+               = kmem_cache_create("sw_flow_stats", sizeof(struct sw_flow_stats),
                                    0, SLAB_HWCACHE_ALIGN, NULL);
        if (flow_stats_cache == NULL) {
                kmem_cache_destroy(flow_cache);