25d11a86c5
The bpf folder didn't actual contain a test application, but instead basic examples of BPF code for use with testpmd. Therefore we can move it to the `examples` folder. Being different, it also needs a README with it, explaining what it is and how to use it. References to the code from the testpmd docs are suitably updated. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
/* 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;
|
|
}
|