1 files changed, 43 insertions, 0 deletions
diff --git a/src/seastar/dpdk/examples/bpf/t3.c b/src/seastar/dpdk/examples/bpf/t3.c
new file mode 100644
index 000000000..9ba34638a
--- /dev/null
+++ b/src/seastar/dpdk/examples/bpf/t3.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+/*
+ * eBPF program sample.
+ * Accepts pointer to struct rte_mbuf as an input parameter.
+ * Dump the mbuf into stdout if it is an ARP packet (aka tcpdump 'arp').
+ *
+ * To compile on x86:
+ * clang -O2 -U __GNUC__ -I${RTE_SDK}/${RTE_TARGET}/include \
+ * -target bpf -Wno-int-to-void-pointer-cast -c t3.c
+ *
+ * To compile on ARM:
+ * clang -O2 -I/usr/include/aarch64-linux-gnu \
+ * -I${RTE_SDK}/${RTE_TARGET}/include -target bpf \
+ * -Wno-int-to-void-pointer-cast -c t3.c
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <net/ethernet.h>
+#include <rte_config.h>
+#include "mbuf.h"
+#include <arpa/inet.h>
+
+extern void rte_pktmbuf_dump(FILE *, const struct rte_mbuf *, unsigned int);
+
+uint64_t
+entry(const void *pkt)
+{
+	const struct rte_mbuf *mb;
+	const struct ether_header *eth;
+
+	mb = pkt;
+	eth = rte_pktmbuf_mtod(mb, const struct ether_header *);
+
+	if (eth->ether_type == htons(ETHERTYPE_ARP))
+		rte_pktmbuf_dump(stdout, mb, 64);
+
+	return 1;
+}