Commit 59fd3486 authored by Ilya Leoshkevich's avatar Ilya Leoshkevich Committed by Alexei Starovoitov

selftests/bpf: fix test_xdp_noinline on s390

test_xdp_noinline fails on s390 due to a handful of endianness issues.
Use ntohs for parsing eth_proto.
Replace bswaps with ntohs/htons.
Signed-off-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
Acked-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 01a0f9e4
......@@ -14,6 +14,7 @@
#include <linux/tcp.h>
#include <linux/udp.h>
#include "bpf_helpers.h"
#include "bpf_endian.h"
static __u32 rol32(__u32 word, unsigned int shift)
{
......@@ -305,7 +306,7 @@ bool encap_v6(struct xdp_md *xdp, struct ctl_value *cval,
ip6h->nexthdr = IPPROTO_IPV6;
ip_suffix = pckt->flow.srcv6[3] ^ pckt->flow.port16[0];
ip6h->payload_len =
__builtin_bswap16(pkt_bytes + sizeof(struct ipv6hdr));
bpf_htons(pkt_bytes + sizeof(struct ipv6hdr));
ip6h->hop_limit = 4;
ip6h->saddr.in6_u.u6_addr32[0] = 1;
......@@ -322,7 +323,7 @@ bool encap_v4(struct xdp_md *xdp, struct ctl_value *cval,
struct real_definition *dst, __u32 pkt_bytes)
{
__u32 ip_suffix = __builtin_bswap16(pckt->flow.port16[0]);
__u32 ip_suffix = bpf_ntohs(pckt->flow.port16[0]);
struct eth_hdr *new_eth;
struct eth_hdr *old_eth;
__u16 *next_iph_u16;
......@@ -352,7 +353,7 @@ bool encap_v4(struct xdp_md *xdp, struct ctl_value *cval,
iph->protocol = IPPROTO_IPIP;
iph->check = 0;
iph->tos = 1;
iph->tot_len = __builtin_bswap16(pkt_bytes + sizeof(struct iphdr));
iph->tot_len = bpf_htons(pkt_bytes + sizeof(struct iphdr));
/* don't update iph->daddr, since it will overwrite old eth_proto
* and multiple iterations of bpf_prog_run() will fail
*/
......@@ -639,7 +640,7 @@ static int process_l3_headers_v6(struct packet_description *pckt,
iph_len = sizeof(struct ipv6hdr);
*protocol = ip6h->nexthdr;
pckt->flow.proto = *protocol;
*pkt_bytes = __builtin_bswap16(ip6h->payload_len);
*pkt_bytes = bpf_ntohs(ip6h->payload_len);
off += iph_len;
if (*protocol == 45) {
return XDP_DROP;
......@@ -671,7 +672,7 @@ static int process_l3_headers_v4(struct packet_description *pckt,
return XDP_DROP;
*protocol = iph->protocol;
pckt->flow.proto = *protocol;
*pkt_bytes = __builtin_bswap16(iph->tot_len);
*pkt_bytes = bpf_ntohs(iph->tot_len);
off += 20;
if (iph->frag_off & 65343)
return XDP_DROP;
......@@ -808,10 +809,10 @@ int balancer_ingress(struct xdp_md *ctx)
nh_off = sizeof(struct eth_hdr);
if (data + nh_off > data_end)
return XDP_DROP;
eth_proto = eth->eth_proto;
if (eth_proto == 8)
eth_proto = bpf_ntohs(eth->eth_proto);
if (eth_proto == ETH_P_IP)
return process_packet(data, nh_off, data_end, 0, ctx);
else if (eth_proto == 56710)
else if (eth_proto == ETH_P_IPV6)
return process_packet(data, nh_off, data_end, 1, ctx);
else
return XDP_DROP;
......
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