d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

test/bpf: use hton for endianness

Browse Source 
Convert host machine endianness to networking endianness for
comparison of incoming packets with BPF filter

Suggested-by: Brian Brooks <brian.brooks@arm.com>
Signed-off-by: Malvika Gupta <malvika.gupta@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
This commit is contained in:
Malvika Gupta 2018-11-02 14:08:08 -05:00 committed by Thomas Monjalon
parent 0aaec3760e
commit 6cebeb5382
2 changed files with 19 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
test/bpf/t1.c
View File

@ -20,32 +20,36 @@
* (011) ret #1
* (012) ret #0
*
* To compile:
* clang -O2 -target bpf -c t1.c
* To compile on x86:
* clang -O2 -U __GNUC__ -target bpf -c t1.c
*
* To compile on ARM:
* clang -O2 -I/usr/include/aarch64-linux-gnu/ -target bpf -c t1.c
*/
#include <stdint.h>
#include <net/ethernet.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
uint64_t
entry(void *pkt)
{
struct ether_header *ether_header = (void *)pkt;
if (ether_header->ether_type != __builtin_bswap16(0x0800))
if (ether_header->ether_type != htons(0x0800))
return 0;
struct iphdr *iphdr = (void *)(ether_header + 1);
if (iphdr->protocol != 17 || (iphdr->frag_off & 0x1ffff) != 0 ||
iphdr->daddr != __builtin_bswap32(0x1020304))
iphdr->daddr != htonl(0x1020304))
return 0;
int hlen = iphdr->ihl * 4;
struct udphdr *udphdr = (void *)iphdr + hlen;
if (udphdr->dest != __builtin_bswap16(5000))
if (udphdr->dest != htons(5000))
return 0;
return 1;

13
test/bpf/t3.c
View File

@ -6,9 +6,15 @@
* 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:
* clang -O2 -I${RTE_SDK}/${RTE_TARGET}/include \
*
* 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>
@ -17,6 +23,7 @@
#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);
@ -29,7 +36,7 @@ entry(const void *pkt)
mb = pkt;
eth = rte_pktmbuf_mtod(mb, const struct ether_header *);
if (eth->ether_type == __builtin_bswap16(ETHERTYPE_ARP))
if (eth->ether_type == htons(ETHERTYPE_ARP))
rte_pktmbuf_dump(stdout, mb, 64);
return 1;