flowcache: more "unsigned int"

Make ->hash_count, ->low_watermark and ->high_watermark unsigned int
and propagate unsignedness to other variables.

This change doesn't change code generation because these fields aren't
used in 64-bit contexts but make it anyway: these fields can't be
negative numbers.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 10 insertions, 9 deletions

diff --git a/include/net/flowcache.h b/include/net/flowcache.h
index 9caf3bfc8d2d..51eb971e8973 100644
--- a/include/net/flowcache.h
+++ b/include/net/flowcache.h
@@ -8,7 +8,7 @@
 
 struct flow_cache_percpu {
         struct hlist_head               *hash_table;
-        int                             hash_count;
+        unsigned int                    hash_count;
         u32                             hash_rnd;
         int                             hash_rnd_recalc;
         struct tasklet_struct           flush_tasklet;
@@ -18,8 +18,8 @@ struct flow_cache {
         u32                             hash_shift;
         struct flow_cache_percpu __percpu *percpu;
         struct hlist_node               node;
-        int                             low_watermark;
-        int                             high_watermark;
+        unsigned int                    low_watermark;
+        unsigned int                    high_watermark;
         struct timer_list               rnd_timer;
 };
 #endif  /* _NET_FLOWCACHE_H */
diff --git a/net/core/flow.c b/net/core/flow.c
index 923156d2a750..f7f5d1932a27 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -99,7 +99,8 @@ static void flow_cache_gc_task(struct work_struct *work)
 }
 
 static void flow_cache_queue_garbage(struct flow_cache_percpu *fcp,
-                                     int deleted, struct list_head *gc_list,
+                                     unsigned int deleted,
+                                     struct list_head *gc_list,
                                      struct netns_xfrm *xfrm)
 {
         if (deleted) {
@@ -114,18 +115,18 @@ static void flow_cache_queue_garbage(struct flow_cache_percpu *fcp,
 
 static void __flow_cache_shrink(struct flow_cache *fc,
                                 struct flow_cache_percpu *fcp,
-                                int shrink_to)
+                                unsigned int shrink_to)
 {
         struct flow_cache_entry *fle;
         struct hlist_node *tmp;
         LIST_HEAD(gc_list);
-        int deleted = 0;
+        unsigned int deleted = 0;
         struct netns_xfrm *xfrm = container_of(fc, struct netns_xfrm,
                                                 flow_cache_global);
         unsigned int i;
 
         for (i = 0; i < flow_cache_hash_size(fc); i++) {
-                int saved = 0;
+                unsigned int saved = 0;
 
                 hlist_for_each_entry_safe(fle, tmp,
                                           &fcp->hash_table[i], u.hlist) {
@@ -146,7 +147,7 @@ static void __flow_cache_shrink(struct flow_cache *fc,
 static void flow_cache_shrink(struct flow_cache *fc,
                               struct flow_cache_percpu *fcp)
 {
-        int shrink_to = fc->low_watermark / flow_cache_hash_size(fc);
+        unsigned int shrink_to = fc->low_watermark / flow_cache_hash_size(fc);
 
         __flow_cache_shrink(fc, fcp, shrink_to);
 }
@@ -296,7 +297,7 @@ static void flow_cache_flush_tasklet(unsigned long data)
         struct flow_cache_entry *fle;
         struct hlist_node *tmp;
         LIST_HEAD(gc_list);
-        int deleted = 0;
+        unsigned int deleted = 0;
         struct netns_xfrm *xfrm = container_of(fc, struct netns_xfrm,
                                                 flow_cache_global);
         unsigned int i;