From: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
To: bpf@vger.kernel.org, netdev@vger.kernel.org,
daniel@iogearbox.net, ast@kernel.org, andrii@kernel.org
Cc: bjorn.topel@intel.com, magnus.karlsson@intel.com,
ciara.loftus@intel.com, john.fastabend@gmail.com,
toke@redhat.com,
Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Subject: [PATCH v5 bpf-next 05/17] selftests: xsk: simplify frame traversal in dumping thread
Date: Tue, 30 Mar 2021 00:43:04 +0200 [thread overview]
Message-ID: <20210329224316.17793-6-maciej.fijalkowski@intel.com> (raw)
In-Reply-To: <20210329224316.17793-1-maciej.fijalkowski@intel.com>
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>
---
tools/testing/selftests/bpf/xdpxceiver.c | 47 +++++++++++-------------
1 file changed, 21 insertions(+), 26 deletions(-)
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 08058a3d9aec..cf30c7943ac0 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -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");
--
2.20.1
next prev parent reply other threads:[~2021-03-29 22:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-29 22:42 [PATCH v5 bpf-next 00/17] AF_XDP selftests improvements & bpf_link Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 01/17] selftests: xsk: don't call worker_pkt_dump() for stats test Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 02/17] selftests: xsk: remove struct ifaceconfigobj Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 03/17] selftests: xsk: remove unused function Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 04/17] selftests: xsk: remove inline keyword from source file Maciej Fijalkowski
2021-03-29 22:43 ` Maciej Fijalkowski [this message]
2021-03-29 22:43 ` [PATCH v5 bpf-next 06/17] libbpf: xsk: use bpf_link Maciej Fijalkowski
2021-03-31 13:10 ` Toke Høiland-Jørgensen
2021-03-29 22:43 ` [PATCH v5 bpf-next 07/17] samples: bpf: do not unload prog within xdpsock Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 08/17] selftests: xsk: remove thread for netns switch Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 09/17] selftests: xsk: split worker thread Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 10/17] selftests: xsk: remove Tx synchronization resources Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 11/17] selftests: xsk: refactor teardown/bidi test cases and testapp_validate Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 12/17] selftests: xsk: remove sync_mutex_tx and atomic var Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 13/17] veth: implement ethtool's get_channels() callback Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 14/17] selftests: xsk: implement bpf_link test Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 15/17] selftests: xsk: remove thread attribute Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 16/17] selftests: xsk: Remove mutex and condition variable Maciej Fijalkowski
2021-03-29 22:43 ` [PATCH v5 bpf-next 17/17] selftests: xsk: Remove unused defines Maciej Fijalkowski
2021-03-30 16:34 ` [PATCH v5 bpf-next 00/17] AF_XDP selftests improvements & bpf_link Alexei Starovoitov
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