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github_dpdk
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examples/bpf/t3.c
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Ciara Power
examples: remove old build system references
08 сен 2020, 00:51
08 сен 2020, 00:51
f399b01
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/* 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__ -target bpf -Wno-int-to-void-pointer-cast -c t3.c * * To compile on ARM: * clang -O2 -I/usr/include/aarch64-linux-gnu -target bpf \ * -Wno-int-to-void-pointer-cast -c t3.c * * NOTE: if DPDK is not installed system-wide, add compiler flag with path * to DPDK rte_mbuf.h file to above commands, * e.g. "clang -I/path/to/dpdk/headers -O2 ..." */ #include <stdint.h> #include <stddef.h> #include <stdio.h> #include <net/ethernet.h> #include <rte_config.h> #include <rte_mbuf_core.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; }