[PATCH 1/1] xdp: compact the function xsk_map_inc

[Zhu Yanjun]

From: Zhu Yanjun <zyjzyj2...@gmail.com>

The function xsk_map_inc always returns zero. As such, changing the
return type to void and removing the test code.

Signed-off-by: Zhu Yanjun <zyjzyj2...@gmail.com>
Signed-off-by: Zhu Yanjun <yanj...@nvidia.com>
---
 net/xdp/xsk.c    |    1 -
 net/xdp/xsk.h    |    2 +-
 net/xdp/xskmap.c |   10 ++--------
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index cfbec39..c1b8a88 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -548,7 +548,6 @@ static void xsk_unbind_dev(struct xdp_sock *xs)
        node = list_first_entry_or_null(&xs->map_list, struct xsk_map_node,
                                        node);
        if (node) {
-               WARN_ON(xsk_map_inc(node->map));
                map = node->map;
                *map_entry = node->map_entry;
        }
diff --git a/net/xdp/xsk.h b/net/xdp/xsk.h
index b9e896c..766b9e2 100644
--- a/net/xdp/xsk.h
+++ b/net/xdp/xsk.h
@@ -41,7 +41,7 @@ struct xsk_map_node {
 
 void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
                             struct xdp_sock **map_entry);
-int xsk_map_inc(struct xsk_map *map);
+void xsk_map_inc(struct xsk_map *map);
 void xsk_map_put(struct xsk_map *map);
 void xsk_clear_pool_at_qid(struct net_device *dev, u16 queue_id);
 int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool,
diff --git a/net/xdp/xskmap.c b/net/xdp/xskmap.c
index 49da2b8..c7dd94a 100644
--- a/net/xdp/xskmap.c
+++ b/net/xdp/xskmap.c
@@ -11,10 +11,9 @@
 
 #include "xsk.h"
 
-int xsk_map_inc(struct xsk_map *map)
+void xsk_map_inc(struct xsk_map *map)
 {
        bpf_map_inc(&map->map);
-       return 0;
 }
 
 void xsk_map_put(struct xsk_map *map)
@@ -26,17 +25,12 @@ void xsk_map_put(struct xsk_map *map)
                                               struct xdp_sock **map_entry)
 {
        struct xsk_map_node *node;
-       int err;
 
        node = kzalloc(sizeof(*node), GFP_ATOMIC | __GFP_NOWARN);
        if (!node)
                return ERR_PTR(-ENOMEM);
 
-       err = xsk_map_inc(map);
-       if (err) {
-               kfree(node);
-               return ERR_PTR(err);
-       }
+       xsk_map_inc(map);
 
        node->map = map;
        node->map_entry = map_entry;
-- 
1.7.1