[PATCH v2] samples/bpf: xdpsock: fix swap.cocci warning

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Fix following swap.cocci warning:
./samples/bpf/xdpsock_user.c:528:22-23:
WARNING opportunity for swap()

Signed-off-by: Yihao Han <hanyihao@xxxxxxxx>
---
Change log:
v2:
- Remove temp variable.
---
 samples/bpf/xsk_fwd.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/samples/bpf/xsk_fwd.c b/samples/bpf/xsk_fwd.c
index 1cd97c84c337..db15323728c0 100644
--- a/samples/bpf/xsk_fwd.c
+++ b/samples/bpf/xsk_fwd.c
@@ -651,11 +651,8 @@ static void swap_mac_addresses(void *data)
 	struct ether_header *eth = (struct ether_header *)data;
 	struct ether_addr *src_addr = (struct ether_addr *)&eth->ether_shost;
 	struct ether_addr *dst_addr = (struct ether_addr *)&eth->ether_dhost;
-	struct ether_addr tmp;
 
-	tmp = *src_addr;
-	*src_addr = *dst_addr;
-	*dst_addr = tmp;
+	swap(*src_addr, *dst_addr);
 }
 
 static void *
-- 
2.17.1




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