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selftests: xsk: Simplify frame traversal in dumping thread 

Store offsets to each layer in a separate variables rather than compute
them every single time.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210329224316.17793-6-maciej.fijalkowski@intel.com
This commit is contained in:
Maciej Fijalkowski 2021-03-30 00:43:04 +02:00 committed by Alexei Starovoitov
parent 965d2cb0f6
commit aa2d61c154
1 changed files with 21 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
tools/testing/selftests/bpf/xdpxceiver.c
View File

@ -658,45 +658,40 @@ static void tx_only_all(struct ifobject *ifobject)
static void worker_pkt_dump(void)
{
struct in_addr ipaddr;
struct ethhdr *ethhdr;
struct iphdr *iphdr;
struct udphdr *udphdr;
char s[128];
int payload;
void *ptr;
fprintf(stdout, "---------------------------------------\n");
for (int iter = 0; iter < num_frames - 1; iter++) {
ptr = pkt_buf[iter]->payload;
ethhdr = ptr;
iphdr = ptr + sizeof(*ethhdr);
udphdr = ptr + sizeof(*ethhdr) + sizeof(*iphdr);
/*extract L2 frame */
fprintf(stdout, "DEBUG>> L2: dst mac: ");
for (int i = 0; i < ETH_ALEN; i++)
fprintf(stdout, "%02X", ((struct ethhdr *)
pkt_buf[iter]->payload)->h_dest[i]);
fprintf(stdout, "%02X", ethhdr->h_dest[i]);
fprintf(stdout, "\nDEBUG>> L2: src mac: ");
for (int i = 0; i < ETH_ALEN; i++)
fprintf(stdout, "%02X", ((struct ethhdr *)
pkt_buf[iter]->payload)->h_source[i]);
fprintf(stdout, "%02X", ethhdr->h_source[i]);
/*extract L3 frame */
fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n",
((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->ihl);
ipaddr.s_addr =
((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->saddr;
fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n", inet_ntoa(ipaddr));
ipaddr.s_addr =
((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->daddr;
fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n", inet_ntoa(ipaddr));
fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n", iphdr->ihl);
fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n",
inet_ntop(AF_INET, &iphdr->saddr, s, sizeof(s)));
fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n",
inet_ntop(AF_INET, &iphdr->daddr, s, sizeof(s)));
/*extract L4 frame */
fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n",
ntohs(((struct udphdr *)(pkt_buf[iter]->payload +
sizeof(struct ethhdr) +
sizeof(struct iphdr)))->source));
fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n",
ntohs(((struct udphdr *)(pkt_buf[iter]->payload +
sizeof(struct ethhdr) +
sizeof(struct iphdr)))->dest));
fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n", ntohs(udphdr->source));
fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n", ntohs(udphdr->dest));
/*extract L5 frame */
int payload = *((uint32_t *)(pkt_buf[iter]->payload + PKT_HDR_SIZE));
payload = *((uint32_t *)(ptr + PKT_HDR_SIZE));
if (payload == EOT) {
print_verbose("End-of-transmission frame received\n");