selftests: xsk: Remove unused variables

Remove unused variables and typedefs. The *_npkts variables are
incremented but never used.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210825093722.10219-4-magnus.karlsson@gmail.com

tools/testing/selftests/bpf/xdpxceiver.c

@@ -70,7 +70,6 @@
 #include <errno.h>
 #include <getopt.h>
 #include <asm/barrier.h>
-typedef __u16 __sum16;
 #include <linux/if_link.h>
 #include <linux/if_ether.h>
 #include <linux/ip.h>
@@ -454,7 +453,6 @@ static void complete_tx_only(struct xsk_socket_info *xsk, int batch_size)
 	if (rcvd) {
 		xsk_ring_cons__release(&xsk->umem->cq, rcvd);
 		xsk->outstanding_tx -= rcvd;
-		xsk->tx_npkts += rcvd;
 	}
 }
 
@@ -512,7 +510,6 @@ static void rx_pkt(struct xsk_socket_info *xsk, struct pollfd *fds)
 
 	xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
 	xsk_ring_cons__release(&xsk->rx, rcvd);
-	xsk->rx_npkts += rcvd;
 }
 
 static void tx_only(struct xsk_socket_info *xsk, u32 *frameptr, int batch_size)

tools/testing/selftests/bpf/xdpxceiver.h

@@ -44,10 +44,6 @@
 
 #define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)
 
-typedef __u32 u32;
-typedef __u16 u16;
-typedef __u8 u8;
-
 enum TEST_MODES {
 	TEST_MODE_UNCONFIGURED = -1,
 	TEST_MODE_SKB,
@@ -104,10 +100,6 @@ struct xsk_socket_info {
 	struct xsk_ring_prod tx;
 	struct xsk_umem_info *umem;
 	struct xsk_socket *xsk;
-	unsigned long rx_npkts;
-	unsigned long tx_npkts;
-	unsigned long prev_rx_npkts;
-	unsigned long prev_tx_npkts;
 	u32 outstanding_tx;
 };