selftests, xsk: Rename AF_XDP testing app

Recently, xsk part of libbpf was moved to selftests/bpf directory and
lives on its own because there is an AF_XDP testing application that
needs it called xdpxceiver. That name makes it a bit hard to indicate
who maintains it as there are other XDP samples in there, whereas this
one is strictly about AF_XDP.

Do s/xdpxceiver/xskxceiver so that it will be easier to figure out who
maintains it. A follow-up patch will correct MAINTAINERS file.

Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220707111613.49031-2-maciej.fijalkowski@intel.com

1 files changed, 172 insertions, 0 deletions

diff --git a/tools/testing/selftests/bpf/xskxceiver.h b/tools/testing/selftests/bpf/xskxceiver.h
new file mode 100644
index 000000000000..3d17053f98e5
--- /dev/null
+++ b/tools/testing/selftests/bpf/xskxceiver.h
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: GPL-2.0
+ * Copyright(c) 2020 Intel Corporation.
+ */
+
+#ifndef XSKXCEIVER_H_
+#define XSKXCEIVER_H_
+
+#ifndef SOL_XDP
+#define SOL_XDP 283
+#endif
+
+#ifndef AF_XDP
+#define AF_XDP 44
+#endif
+
+#ifndef PF_XDP
+#define PF_XDP AF_XDP
+#endif
+
+#ifndef SO_BUSY_POLL_BUDGET
+#define SO_BUSY_POLL_BUDGET 70
+#endif
+
+#ifndef SO_PREFER_BUSY_POLL
+#define SO_PREFER_BUSY_POLL 69
+#endif
+
+#define TEST_PASS 0
+#define TEST_FAILURE -1
+#define MAX_INTERFACES 2
+#define MAX_INTERFACE_NAME_CHARS 7
+#define MAX_INTERFACES_NAMESPACE_CHARS 10
+#define MAX_SOCKETS 2
+#define MAX_TEST_NAME_SIZE 32
+#define MAX_TEARDOWN_ITER 10
+#define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
+			sizeof(struct udphdr))
+#define MIN_ETH_PKT_SIZE 64
+#define ETH_FCS_SIZE 4
+#define MIN_PKT_SIZE (MIN_ETH_PKT_SIZE - ETH_FCS_SIZE)
+#define PKT_SIZE (MIN_PKT_SIZE)
+#define IP_PKT_SIZE (PKT_SIZE - sizeof(struct ethhdr))
+#define IP_PKT_VER 0x4
+#define IP_PKT_TOS 0x9
+#define UDP_PKT_SIZE (IP_PKT_SIZE - sizeof(struct iphdr))
+#define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
+#define USLEEP_MAX 10000
+#define SOCK_RECONF_CTR 10
+#define BATCH_SIZE 64
+#define POLL_TMOUT 1000
+#define RECV_TMOUT 3
+#define DEFAULT_PKT_CNT (4 * 1024)
+#define DEFAULT_UMEM_BUFFERS (DEFAULT_PKT_CNT / 4)
+#define UMEM_SIZE (DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE)
+#define RX_FULL_RXQSIZE 32
+#define UMEM_HEADROOM_TEST_SIZE 128
+#define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)
+
+#define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)
+
+enum test_mode {
+	TEST_MODE_SKB,
+	TEST_MODE_DRV,
+	TEST_MODE_MAX
+};
+
+enum test_type {
+	TEST_TYPE_RUN_TO_COMPLETION,
+	TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME,
+	TEST_TYPE_RUN_TO_COMPLETION_SINGLE_PKT,
+	TEST_TYPE_POLL,
+	TEST_TYPE_UNALIGNED,
+	TEST_TYPE_ALIGNED_INV_DESC,
+	TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,
+	TEST_TYPE_UNALIGNED_INV_DESC,
+	TEST_TYPE_HEADROOM,
+	TEST_TYPE_TEARDOWN,
+	TEST_TYPE_BIDI,
+	TEST_TYPE_STATS_RX_DROPPED,
+	TEST_TYPE_STATS_TX_INVALID_DESCS,
+	TEST_TYPE_STATS_RX_FULL,
+	TEST_TYPE_STATS_FILL_EMPTY,
+	TEST_TYPE_BPF_RES,
+	TEST_TYPE_MAX
+};
+
+static bool opt_pkt_dump;
+static bool opt_verbose;
+
+struct xsk_umem_info {
+	struct xsk_ring_prod fq;
+	struct xsk_ring_cons cq;
+	struct xsk_umem *umem;
+	u32 num_frames;
+	u32 frame_headroom;
+	void *buffer;
+	u32 frame_size;
+	bool unaligned_mode;
+};
+
+struct xsk_socket_info {
+	struct xsk_ring_cons rx;
+	struct xsk_ring_prod tx;
+	struct xsk_umem_info *umem;
+	struct xsk_socket *xsk;
+	u32 outstanding_tx;
+	u32 rxqsize;
+};
+
+struct pkt {
+	u64 addr;
+	u32 len;
+	u32 payload;
+	bool valid;
+};
+
+struct pkt_stream {
+	u32 nb_pkts;
+	u32 rx_pkt_nb;
+	struct pkt *pkts;
+	bool use_addr_for_fill;
+};
+
+struct ifobject;
+typedef int (*validation_func_t)(struct ifobject *ifobj);
+typedef void *(*thread_func_t)(void *arg);
+
+struct ifobject {
+	char ifname[MAX_INTERFACE_NAME_CHARS];
+	char nsname[MAX_INTERFACES_NAMESPACE_CHARS];
+	struct xsk_socket_info *xsk;
+	struct xsk_socket_info *xsk_arr;
+	struct xsk_umem_info *umem;
+	thread_func_t func_ptr;
+	validation_func_t validation_func;
+	struct pkt_stream *pkt_stream;
+	int ns_fd;
+	int xsk_map_fd;
+	u32 dst_ip;
+	u32 src_ip;
+	u32 xdp_flags;
+	u32 bind_flags;
+	u16 src_port;
+	u16 dst_port;
+	bool tx_on;
+	bool rx_on;
+	bool use_poll;
+	bool busy_poll;
+	bool use_fill_ring;
+	bool release_rx;
+	u8 dst_mac[ETH_ALEN];
+	u8 src_mac[ETH_ALEN];
+};
+
+struct test_spec {
+	struct ifobject *ifobj_tx;
+	struct ifobject *ifobj_rx;
+	struct pkt_stream *pkt_stream_default;
+	u16 total_steps;
+	u16 current_step;
+	u16 nb_sockets;
+	bool fail;
+	char name[MAX_TEST_NAME_SIZE];
+};
+
+pthread_barrier_t barr;
+pthread_mutex_t pacing_mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_cond_t pacing_cond = PTHREAD_COND_INITIALIZER;
+
+int pkts_in_flight;
+
+#endif				/* XSKXCEIVER_H_ */