[PATCH 12/12] test: add test for pcap PMD

Stephen Hemminger
2026-01-06T18:34:26Z

This test was generated by Claude AI with some prompting and
pointing at existing ring PMD test. It tests timestamps and
jumbo frame support.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
app/test/meson.build | 2 +
app/test/test_pmd_pcap.c | 1471 ++++++++++++++++++++++++++++++++++++++
2 files changed, 1473 insertions(+)
create mode 100644 app/test/test_pmd_pcap.c

diff --git a/app/test/meson.build b/app/test/meson.build
index efec42a6bf..6bc37a2f94 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -141,6 +141,7 @@ source_file_deps = {
'test_per_lcore.c': [],
'test_pflock.c': [],
'test_pie.c': ['sched'],
+ 'test_pmd_pcap.c': ['ethdev', 'net', 'bus_vdev'] + packet_burst_generator_deps,
'test_pmd_perf.c': ['ethdev', 'net'] + packet_burst_generator_deps,
'test_pmd_ring.c': ['net_ring', 'ethdev', 'bus_vdev'],
'test_pmd_ring_perf.c': ['ethdev', 'net_ring', 'bus_vdev'],
@@ -216,6 +217,7 @@ source_file_deps = {
source_file_ext_deps = {
'test_compressdev.c': ['zlib'],
'test_pcapng.c': ['pcap'],
+ 'test_pmd_pcap.c': ['pcap'],
}

def_lib = get_option('default_library')
diff --git a/app/test/test_pmd_pcap.c b/app/test/test_pmd_pcap.c
new file mode 100644
index 0000000000..1134404eb8
--- /dev/null
+++ b/app/test/test_pmd_pcap.c
@@ -0,0 +1,1471 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2026 Stephen Hemminger
+ */
+
+#include "test.h"
+#include "packet_burst_generator.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <pcap/pcap.h>
+
+#include <rte_ethdev.h>
+#include <rte_bus_vdev.h>
+#include <rte_mbuf.h>
+#include <rte_mbuf_dyn.h>
+#include <rte_mempool.h>
+#include <rte_ether.h>
+#include <rte_ip.h>
+#include <rte_udp.h>
+
+#define SOCKET0 0
+#define RING_SIZE 256
+#define NB_MBUF 1024
+#define NUM_PACKETS 64
+#define MAX_PKT_BURST 32
+#define PCAP_SNAPLEN 65535
+
+/* Packet sizes to test */
+#define PKT_SIZE_MIN 60
+#define PKT_SIZE_SMALL 128
+#define PKT_SIZE_MEDIUM 512
+#define PKT_SIZE_LARGE 1024
+#define PKT_SIZE_MTU 1500
+#define PKT_SIZE_JUMBO 9000
+
+static struct rte_mempool *mp;
+
+/* Timestamp dynamic field access */
+static int timestamp_dynfield_offset = -1;
+static uint64_t timestamp_rx_dynflag;
+
+/* Temporary file paths */
+static char tx_pcap_path[PATH_MAX];
+static char rx_pcap_path[PATH_MAX];
+static char infinite_pcap_path[PATH_MAX];
+static char timestamp_pcap_path[PATH_MAX];
+static char varied_pcap_path[PATH_MAX];
+static char jumbo_pcap_path[PATH_MAX];
+
+/* MAC addresses for packet generation */
+static struct rte_ether_addr src_mac;
+static struct rte_ether_addr dst_mac = {
+ .addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
+};
+
+/* Sample Ethernet/IPv4/UDP packet for testing */
+static const uint8_t test_packet[] = {
+ /* Ethernet header */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* dst MAC (broadcast) */
+ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, /* src MAC */
+ 0x08, 0x00, /* EtherType: IPv4 */
+ /* IPv4 header */
+ 0x45, 0x00, 0x00, 0x2e, /* ver, ihl, tos, len */
+ 0x00, 0x01, 0x00, 0x00, /* id, flags, frag */
+ 0x40, 0x11, 0x00, 0x00, /* ttl, proto(UDP), csum */
+ 0x0a, 0x00, 0x00, 0x01, /* src: 10.0.0.1 */
+ 0x0a, 0x00, 0x00, 0x02, /* dst: 10.0.0.2 */
+ /* UDP header */
+ 0x04, 0xd2, 0x04, 0xd2, /* sport, dport (1234) */
+ 0x00, 0x1a, 0x00, 0x00, /* len, csum */
+ /* Payload: "Test packet!" */
+ 0x54, 0x65, 0x73, 0x74, 0x20, 0x70,
+ 0x61, 0x63, 0x6b, 0x65, 0x74, 0x21
+};
+
+/*
+ * Helper: Get timestamp from mbuf using dynamic field
+ */
+static inline rte_mbuf_timestamp_t
+mbuf_timestamp_get(const struct rte_mbuf *mbuf)
+{
+ return *RTE_MBUF_DYNFIELD(mbuf, timestamp_dynfield_offset,
+ rte_mbuf_timestamp_t *);
+}
+
+/*
+ * Helper: Check if mbuf has valid timestamp
+ */
+static inline int
+mbuf_has_timestamp(const struct rte_mbuf *mbuf)
+{
+ if (timestamp_dynfield_offset < 0)
+ return 0;
+ return (mbuf->ol_flags & timestamp_rx_dynflag) != 0;
+}
+
+/*
+ * Helper: Initialize timestamp dynamic field access
+ */
+static int
+timestamp_init(void)
+{
+ int offset;
+
+ offset = rte_mbuf_dynfield_lookup(RTE_MBUF_DYNFIELD_TIMESTAMP_NAME,
+ NULL);
+ if (offset < 0) {
+ printf("Timestamp dynfield not registered\n");
+ return -1;
+ }
+ timestamp_dynfield_offset = offset;
+
+ offset = rte_mbuf_dynflag_lookup(RTE_MBUF_DYNFLAG_RX_TIMESTAMP_NAME,
+ NULL);
+ if (offset < 0) {
+ printf("Timestamp dynflag not registered\n");
+ return -1;
+ }
+ timestamp_rx_dynflag = RTE_BIT64(offset);
+
+ return 0;
+}
+
+/*
+ * Helper: Create a unique temporary file path
+ */
+static int
+create_temp_path(char *buf, size_t buflen, const char *prefix)
+{
+ int fd;
+
+ snprintf(buf, buflen, "/tmp/%s_XXXXXX.pcap", prefix);
+ fd = mkstemps(buf, 5); /* 5 = strlen(".pcap") */
+ if (fd < 0)
+ return -1;
+ close(fd);
+ return 0;
+}
+
+/*
+ * Helper: Create a pcap file with test packets using libpcap
+ */
+static int
+create_test_pcap(const char *path, unsigned int num_pkts)
+{
+ pcap_t *pd;
+ pcap_dumper_t *dumper;
+ struct pcap_pkthdr hdr;
+ unsigned int i;
+
+ pd = pcap_open_dead(DLT_EN10MB, PCAP_SNAPLEN);
+ if (pd == NULL) {
+ printf("pcap_open_dead failed\n");
+ return -1;
+ }
+
+ dumper = pcap_dump_open(pd, path);
+ if (dumper == NULL) {
+ printf("pcap_dump_open failed: %s\n", pcap_geterr(pd));
+ pcap_close(pd);
+ return -1;
+ }
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.caplen = sizeof(test_packet);
+ hdr.len = sizeof(test_packet);
+
+ for (i = 0; i < num_pkts; i++) {
+ hdr.ts.tv_sec = i;
+ hdr.ts.tv_usec = 0;
+ pcap_dump((u_char *)dumper, &hdr, test_packet);
+ }
+
+ pcap_dump_close(dumper);
+ pcap_close(pd);
+ return 0;
+}
+
+/*
+ * Helper: Create pcap file with packets of specified size
+ */
+static int
+create_sized_pcap(const char *path, unsigned int num_pkts, uint16_t pkt_size)
+{
+ pcap_t *pd;
+ pcap_dumper_t *dumper;
+ struct pcap_pkthdr hdr;
+ uint8_t *pkt_data;
+ unsigned int i;
+
+ /* Minimum valid ethernet frame */
+ if (pkt_size < 60)
+ pkt_size = 60;
+
+ pkt_data = calloc(1, pkt_size);
+ if (pkt_data == NULL)
+ return -1;
+
+ /* Build ethernet header */
+ struct rte_ether_hdr *eth_hdr = (struct rte_ether_hdr *)pkt_data;
+ rte_ether_addr_copy(&src_mac, &eth_hdr->src_addr);
+ rte_ether_addr_copy(&dst_mac, &eth_hdr->dst_addr);
+ eth_hdr->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
+
+ /* Build IP header */
+ struct rte_ipv4_hdr *ip_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
+ uint16_t ip_len = pkt_size - sizeof(struct rte_ether_hdr);
+ ip_hdr->version_ihl = RTE_IPV4_VHL_DEF;
+ ip_hdr->total_length = rte_cpu_to_be_16(ip_len);
+ ip_hdr->time_to_live = 64;
+ ip_hdr->next_proto_id = IPPROTO_UDP;
+ ip_hdr->src_addr = rte_cpu_to_be_32(IPV4_ADDR(10, 0, 0, 1));
+ ip_hdr->dst_addr = rte_cpu_to_be_32(IPV4_ADDR(10, 0, 0, 2));
+ ip_hdr->hdr_checksum = 0;
+ ip_hdr->hdr_checksum = rte_ipv4_cksum(ip_hdr);
+
+ /* Build UDP header */
+ struct rte_udp_hdr *udp_hdr = (struct rte_udp_hdr *)(ip_hdr + 1);
+ uint16_t udp_len = ip_len - sizeof(struct rte_ipv4_hdr);
+ udp_hdr->src_port = rte_cpu_to_be_16(1234);
+ udp_hdr->dst_port = rte_cpu_to_be_16(1234);
+ udp_hdr->dgram_len = rte_cpu_to_be_16(udp_len);
+ udp_hdr->dgram_cksum = 0;
+
+ /* Fill payload with pattern */
+ uint8_t *payload = (uint8_t *)(udp_hdr + 1);
+ uint16_t payload_len = udp_len - sizeof(struct rte_udp_hdr);
+ for (uint16_t j = 0; j < payload_len; j++)
+ payload[j] = (uint8_t)(j & 0xFF);
+
+ pd = pcap_open_dead(DLT_EN10MB, PCAP_SNAPLEN);
+ if (pd == NULL) {
+ free(pkt_data);
+ return -1;
+ }
+
+ dumper = pcap_dump_open(pd, path);
+ if (dumper == NULL) {
+ pcap_close(pd);
+ free(pkt_data);
+ return -1;
+ }
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.caplen = pkt_size;
+ hdr.len = pkt_size;
+
+ for (i = 0; i < num_pkts; i++) {
+ hdr.ts.tv_sec = i;
+ hdr.ts.tv_usec = 0;
+ /* Vary sequence byte in payload */
+ payload[0] = (uint8_t)(i & 0xFF);
+ pcap_dump((u_char *)dumper, &hdr, pkt_data);
+ }
+
+ pcap_dump_close(dumper);
+ pcap_close(pd);
+ free(pkt_data);
+ return 0;
+}
+
+/*
+ * Helper: Create pcap file with varied packet sizes
+ */
+static int
+create_varied_pcap(const char *path, unsigned int num_pkts)
+{
+ static const uint16_t sizes[] = {
+ PKT_SIZE_MIN, PKT_SIZE_SMALL, PKT_SIZE_MEDIUM,
+ PKT_SIZE_LARGE, PKT_SIZE_MTU
+ };
+ pcap_t *pd;
+ pcap_dumper_t *dumper;
+ struct pcap_pkthdr hdr;
+ uint8_t *pkt_data;
+ unsigned int i;
+
+ pkt_data = calloc(1, PKT_SIZE_MTU);
+ if (pkt_data == NULL)
+ return -1;
+
+ pd = pcap_open_dead(DLT_EN10MB, PCAP_SNAPLEN);
+ if (pd == NULL) {
+ free(pkt_data);
+ return -1;
+ }
+
+ dumper = pcap_dump_open(pd, path);
+ if (dumper == NULL) {
+ pcap_close(pd);
+ free(pkt_data);
+ return -1;
+ }
+
+ for (i = 0; i < num_pkts; i++) {
+ uint16_t pkt_size = sizes[i % RTE_DIM(sizes)];
+
+ memset(pkt_data, 0, pkt_size);
+
+ /* Build ethernet header */
+ struct rte_ether_hdr *eth_hdr = (struct rte_ether_hdr *)pkt_data;
+ rte_ether_addr_copy(&src_mac, &eth_hdr->src_addr);
+ rte_ether_addr_copy(&dst_mac, &eth_hdr->dst_addr);
+ eth_hdr->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
+
+ /* Build IP header */
+ struct rte_ipv4_hdr *ip_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
+ uint16_t ip_len = pkt_size - sizeof(struct rte_ether_hdr);
+ ip_hdr->version_ihl = RTE_IPV4_VHL_DEF;
+ ip_hdr->total_length = rte_cpu_to_be_16(ip_len);
+ ip_hdr->time_to_live = 64;
+ ip_hdr->next_proto_id = IPPROTO_UDP;
+ ip_hdr->src_addr = rte_cpu_to_be_32(IPV4_ADDR(10, 0, 0, 1));
+ ip_hdr->dst_addr = rte_cpu_to_be_32(IPV4_ADDR(10, 0, 0, 2));
+ ip_hdr->hdr_checksum = 0;
+ ip_hdr->hdr_checksum = rte_ipv4_cksum(ip_hdr);
+
+ /* Build UDP header */
+ struct rte_udp_hdr *udp_hdr = (struct rte_udp_hdr *)(ip_hdr + 1);
+ uint16_t udp_len = ip_len - sizeof(struct rte_ipv4_hdr);
+ udp_hdr->src_port = rte_cpu_to_be_16(1234);
+ udp_hdr->dst_port = rte_cpu_to_be_16(1234);
+ udp_hdr->dgram_len = rte_cpu_to_be_16(udp_len);
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.ts.tv_sec = i;
+ hdr.caplen = pkt_size;
+ hdr.len = pkt_size;
+
+ pcap_dump((u_char *)dumper, &hdr, pkt_data);
+ }
+
+ pcap_dump_close(dumper);
+ pcap_close(pd);
+ free(pkt_data);
+ return 0;
+}
+
+/*
+ * Helper: Create pcap file with specific timestamps for testing
+ */
+static int
+create_timestamped_pcap(const char *path, unsigned int num_pkts,
+ uint32_t base_sec, uint32_t usec_increment)
+{
+ pcap_t *pd;
+ pcap_dumper_t *dumper;
+ struct pcap_pkthdr hdr;
+ unsigned int i;
+
+ pd = pcap_open_dead_with_tstamp_precision(DLT_EN10MB, PCAP_SNAPLEN,
+ PCAP_TSTAMP_PRECISION_MICRO);
+ if (pd == NULL)
+ return -1;
+
+ dumper = pcap_dump_open(pd, path);
+ if (dumper == NULL) {
+ pcap_close(pd);
+ return -1;
+ }
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.caplen = sizeof(test_packet);
+ hdr.len = sizeof(test_packet);
+
+ for (i = 0; i < num_pkts; i++) {
+ uint64_t total_usec = (uint64_t)i * usec_increment;
+ hdr.ts.tv_sec = base_sec + total_usec / 1000000;
+ hdr.ts.tv_usec = total_usec % 1000000;
+ pcap_dump((u_char *)dumper, &hdr, test_packet);
+ }
+
+ pcap_dump_close(dumper);
+ pcap_close(pd);
+ return 0;
+}
+
+/*
+ * Helper: Count packets in a pcap file using libpcap
+ */
+static int
+count_pcap_packets(const char *path)
+{
+ pcap_t *pd;
+ char errbuf[PCAP_ERRBUF_SIZE];
+ struct pcap_pkthdr *hdr;
+ const u_char *data;
+ int count = 0;
+
+ pd = pcap_open_offline(path, errbuf);
+ if (pd == NULL)
+ return -1;
+
+ while (pcap_next_ex(pd, &hdr, &data) == 1)
+ count++;
+
+ pcap_close(pd);
+ return count;
+}
+
+/*
+ * Helper: Get packet sizes from pcap file
+ */
+static int
+get_pcap_packet_sizes(const char *path, uint16_t *sizes, unsigned int max_pkts)
+{
+ pcap_t *pd;
+ char errbuf[PCAP_ERRBUF_SIZE];
+ struct pcap_pkthdr *hdr;
+ const u_char *data;
+ unsigned int count = 0;
+
+ pd = pcap_open_offline(path, errbuf);
+ if (pd == NULL)
+ return -1;
+
+ while (pcap_next_ex(pd, &hdr, &data) == 1 && count < max_pkts) {
+ sizes[count] = hdr->caplen;
+ count++;
+ }
+
+ pcap_close(pd);
+ return count;
+}
+
+/*
+ * Helper: Configure and start a pcap ethdev port
+ */
+static int
+setup_pcap_port(uint16_t port)
+{
+ struct rte_eth_conf port_conf = {
+ .rxmode.offloads = RTE_ETH_RX_OFFLOAD_TIMESTAMP,
+ };
+ int ret;
+
+ ret = rte_eth_dev_configure(port, 1, 1, &port_conf);
+ TEST_ASSERT(ret == 0, "Failed to configure port %u: %s",
+ port, rte_strerror(-ret));
+
+ ret = rte_eth_rx_queue_setup(port, 0, RING_SIZE, SOCKET0, NULL, mp);
+ TEST_ASSERT(ret == 0, "Failed to setup RX queue on port %u: %s",
+ port, rte_strerror(-ret));
+
+ ret = rte_eth_tx_queue_setup(port, 0, RING_SIZE, SOCKET0, NULL);
+ TEST_ASSERT(ret == 0, "Failed to setup TX queue on port %u: %s",
+ port, rte_strerror(-ret));
+
+ ret = rte_eth_dev_start(port);
+ TEST_ASSERT(ret == 0, "Failed to start port %u: %s",
+ port, rte_strerror(-ret));
+
+ return 0;
+}
+
+/*
+ * Helper: Create a pcap vdev and return its port ID
+ */
+static int
+create_pcap_vdev(const char *name, const char *devargs, uint16_t *port_id)
+{
+ int ret;
+
+ ret = rte_vdev_init(name, devargs);
+ TEST_ASSERT(ret == 0, "Failed to create vdev %s: %s",
+ name, rte_strerror(-ret));
+
+ ret = rte_eth_dev_get_port_by_name(name, port_id);
+ TEST_ASSERT(ret == 0, "Failed to get port ID for %s", name);
+
+ return 0;
+}
+
+/*
+ * Helper: Cleanup a pcap vdev
+ */
+static void
+cleanup_pcap_vdev(const char *name, uint16_t port_id)
+{
+ rte_eth_dev_stop(port_id);
+ rte_vdev_uninit(name);
+}
+
+/*
+ * Helper: Generate test packets using packet_burst_generator
+ */
+static int
+generate_test_packets(struct rte_mempool *pool, struct rte_mbuf **mbufs,
+ unsigned int count, uint8_t pkt_len)
+{
+ struct rte_ether_hdr eth_hdr;
+ struct rte_ipv4_hdr ip_hdr;
+ struct rte_udp_hdr udp_hdr;
+ uint16_t ip_pkt_data_len;
+ int nb_pkt;
+
+ /* Initialize ethernet header */
+ initialize_eth_header(&eth_hdr, &src_mac, &dst_mac,
+ RTE_ETHER_TYPE_IPV4, 0, 0);
+
+ /* Calculate IP payload length (total - eth - ip headers) */
+ ip_pkt_data_len = pkt_len - sizeof(struct rte_ether_hdr) -
+ sizeof(struct rte_ipv4_hdr);
+
+ /* Initialize UDP header */
+ initialize_udp_header(&udp_hdr, 1234, 1234,
+ ip_pkt_data_len - sizeof(struct rte_udp_hdr));
+
+ /* Initialize IPv4 header */
+ initialize_ipv4_header(&ip_hdr, IPV4_ADDR(10, 0, 0, 1),
+ IPV4_ADDR(10, 0, 0, 2), ip_pkt_data_len);
+
+ /* Generate packet burst */
+ nb_pkt = generate_packet_burst(pool, mbufs, &eth_hdr, 0,
+ &ip_hdr, 1, &udp_hdr,
+ count, pkt_len, 1);
+
+ return nb_pkt;
+}
+
+/*
+ * Helper: Allocate mbufs and fill with test packet data (legacy method)
+ */
+static int
+alloc_test_mbufs(struct rte_mbuf **mbufs, unsigned int count)
+{
+ unsigned int i;
+ int ret;
+
+ ret = rte_pktmbuf_alloc_bulk(mp, mbufs, count);
+ if (ret != 0)
+ return -1;
+
+ for (i = 0; i < count; i++) {
+ rte_memcpy(rte_pktmbuf_mtod(mbufs[i], void *),
+ test_packet, sizeof(test_packet));
+ mbufs[i]->data_len = sizeof(test_packet);
+ mbufs[i]->pkt_len = sizeof(test_packet);
+ }
+ return 0;
+}
+
+/*
+ * Helper: Allocate a multi-segment mbuf for jumbo frames
+ * Returns the head mbuf with chained segments, or NULL on failure
+ */
+static struct rte_mbuf *
+alloc_jumbo_mbuf(uint32_t pkt_len, uint8_t fill_byte)
+{
+ struct rte_mbuf *head = NULL;
+ struct rte_mbuf **prev = &head;
+ uint32_t remaining = pkt_len;
+ uint16_t nb_segs = 0;
+
+ while (remaining > 0) {
+ struct rte_mbuf *seg = rte_pktmbuf_alloc(mp);
+ uint16_t seg_size;
+
+ if (seg == NULL) {
+ rte_pktmbuf_free(head);
+ return NULL;
+ }
+
+ seg_size = RTE_MIN(remaining, rte_pktmbuf_tailroom(seg));
+ seg->data_len = seg_size;
+
+ /* Fill segment with pattern */
+ memset(rte_pktmbuf_mtod(seg, void *), fill_byte, seg_size);
+
+ *prev = seg;
+ prev = &seg->next;
+ remaining -= seg_size;
+ nb_segs++;
+ }
+
+ if (head != NULL) {
+ head->pkt_len = pkt_len;
+ head->nb_segs = nb_segs;
+ }
+
+ return head;
+}
+
+/*
+ * Helper: Receive packets from port (no retry needed for file-based RX)
+ */
+static int
+receive_packets(uint16_t port, struct rte_mbuf **mbufs,
+ unsigned int max_pkts, unsigned int *received)
+{
+ unsigned int total = 0;
+
+ while (total < max_pkts) {
+ uint16_t nb_rx = rte_eth_rx_burst(port, 0, &mbufs[total], max_pkts - total);
+ if (nb_rx == 0)
+ break;
+ total += nb_rx;
+ }
+ *received = total;
+ return 0;
+}
+
+/*
+ * Helper: Verify mbuf contains expected test packet
+ */
+static int
+verify_packet(struct rte_mbuf *mbuf)
+{
+ TEST_ASSERT_EQUAL(rte_pktmbuf_data_len(mbuf), sizeof(test_packet),
+ "Packet length mismatch");
+ TEST_ASSERT_BUFFERS_ARE_EQUAL(rte_pktmbuf_mtod(mbuf, void *),
+ test_packet, sizeof(test_packet),
+ "Packet data mismatch");
+ return 0;
+}
+
+/*
+ * Helper: Check if network interface exists
+ */
+static int
+iface_exists(const char *name)
+{
+ struct ifreq ifr;
+ int sock, ret;
+
+ sock = socket(AF_INET, SOCK_DGRAM, 0);
+ if (sock < 0)
+ return 0;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strlcpy(ifr.ifr_name, name, IFNAMSIZ);
+ ret = ioctl(sock, SIOCGIFINDEX, &ifr);
+ close(sock);
+ return ret == 0;
+}
+
+/*
+ * Helper: Find a usable test interface
+ */
+static const char *
+find_test_iface(void)
+{
+ if (iface_exists("dummy0"))
+ return "dummy0";
+ if (iface_exists("lo"))
+ return "lo";
+ return NULL;
+}
+
+/*
+ * Test: Transmit packets to pcap file
+ */
+static int
+test_tx_to_file(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ char devargs[256];
+ uint16_t port_id;
+ int nb_tx, pkt_count;
+
+ printf("Testing TX to pcap file\n");
+
+ TEST_ASSERT(create_temp_path(tx_pcap_path, sizeof(tx_pcap_path),
+ "pcap_tx") == 0,
+ "Failed to create temp file path");
+
+ snprintf(devargs, sizeof(devargs), "tx_pcap=%s", tx_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_tx", devargs, &port_id) == 0,
+ "Failed to create TX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup TX port");
+ TEST_ASSERT(alloc_test_mbufs(mbufs, NUM_PACKETS) == 0,
+ "Failed to allocate mbufs");
+
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, NUM_PACKETS);
+ TEST_ASSERT_EQUAL(nb_tx, NUM_PACKETS,
+ "TX burst failed: sent %d/%d", nb_tx, NUM_PACKETS);
+
+ cleanup_pcap_vdev("net_pcap_tx", port_id);
+
+ pkt_count = count_pcap_packets(tx_pcap_path);
+ TEST_ASSERT_EQUAL(pkt_count, NUM_PACKETS,
+ "Pcap file has %d packets, expected %d",
+ pkt_count, NUM_PACKETS);
+
+ printf("TX to file PASSED: %d packets written\n", NUM_PACKETS);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: Receive packets from pcap file
+ * Uses output from TX test as input
+ */
+static int
+test_rx_from_file(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int received, i;
+
+ printf("Testing RX from pcap file\n");
+
+ /* Create input file if TX test didn't run */
+ if (access(tx_pcap_path, F_OK) != 0) {
+ TEST_ASSERT(create_temp_path(tx_pcap_path, sizeof(tx_pcap_path),
+ "pcap_rx_input") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_test_pcap(tx_pcap_path, NUM_PACKETS) == 0,
+ "Failed to create input pcap");
+ }
+
+ snprintf(devargs, sizeof(devargs), "rx_pcap=%s", tx_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_rx", devargs, &port_id) == 0,
+ "Failed to create RX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup RX port");
+
+ receive_packets(port_id, mbufs, NUM_PACKETS, &received);
+ TEST_ASSERT_EQUAL(received, NUM_PACKETS,
+ "Received %u packets, expected %d", received, NUM_PACKETS);
+
+ for (i = 0; i < received; i++) {
+ TEST_ASSERT(verify_packet(mbufs[i]) == 0,
+ "Packet %u verification failed", i);
+ }
+ rte_pktmbuf_free_bulk(mbufs, received);
+
+ cleanup_pcap_vdev("net_pcap_rx", port_id);
+
+ printf("RX from file PASSED: %u packets verified\n", received);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: TX with varied packet sizes using packet_burst_generator
+ */
+static int
+test_tx_varied_sizes(void)
+{
+ static const uint8_t test_sizes[] = {
+ PKT_SIZE_MIN, PKT_SIZE_SMALL, PACKET_BURST_GEN_PKT_LEN_128
+ };
+ char tx_path[PATH_MAX];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int i;
+
+ printf("Testing TX with varied packet sizes\n");
+
+ TEST_ASSERT(create_temp_path(tx_path, sizeof(tx_path),
+ "pcap_tx_varied") == 0,
+ "Failed to create temp file path");
+
+ snprintf(devargs, sizeof(devargs), "tx_pcap=%s", tx_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_tx_var", devargs, &port_id) == 0,
+ "Failed to create TX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup TX port");
+
+ for (i = 0; i < RTE_DIM(test_sizes); i++) {
+ struct rte_mbuf *mbufs[MAX_PKT_BURST];
+ int nb_pkt, nb_tx;
+
+ nb_pkt = generate_test_packets(mp, mbufs, MAX_PKT_BURST,
+ test_sizes[i]);
+ TEST_ASSERT(nb_pkt > 0,
+ "Failed to generate packets of size %u",
+ test_sizes[i]);
+
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, nb_pkt);
+ if (nb_tx < nb_pkt)
+ rte_pktmbuf_free_bulk(&mbufs[nb_tx], nb_pkt - nb_tx);
+
+ printf(" Size %u: generated %d, transmitted %d\n",
+ test_sizes[i], nb_pkt, nb_tx);
+ TEST_ASSERT(nb_tx > 0, "Failed to TX packets of size %u",
+ test_sizes[i]);
+ }
+
+ cleanup_pcap_vdev("net_pcap_tx_var", port_id);
+ unlink(tx_path);
+
+ printf("TX varied sizes PASSED\n");
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: RX with varied packet sizes
+ */
+static int
+test_rx_varied_sizes(void)
+{
+ static const uint16_t expected_sizes[] = {
+ PKT_SIZE_MIN, PKT_SIZE_SMALL, PKT_SIZE_MEDIUM,
+ PKT_SIZE_LARGE, PKT_SIZE_MTU
+ };
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ uint16_t rx_sizes[NUM_PACKETS];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int received, i;
+
+ printf("Testing RX with varied packet sizes\n");
+
+ TEST_ASSERT(create_temp_path(varied_pcap_path, sizeof(varied_pcap_path),
+ "pcap_varied") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_varied_pcap(varied_pcap_path, NUM_PACKETS) == 0,
+ "Failed to create varied pcap");
+
+ snprintf(devargs, sizeof(devargs), "rx_pcap=%s", varied_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_var", devargs, &port_id) == 0,
+ "Failed to create varied RX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup varied RX port");
+
+ receive_packets(port_id, mbufs, NUM_PACKETS, &received);
+ TEST_ASSERT_EQUAL(received, NUM_PACKETS,
+ "Received %u packets, expected %d", received, NUM_PACKETS);
+
+ /* Verify packet sizes match expected pattern */
+ for (i = 0; i < received; i++) {
+ uint16_t expected = expected_sizes[i % RTE_DIM(expected_sizes)];
+ rx_sizes[i] = rte_pktmbuf_pkt_len(mbufs[i]);
+ TEST_ASSERT_EQUAL(rx_sizes[i], expected,
+ "Packet %u: size %u, expected %u",
+ i, rx_sizes[i], expected);
+ }
+
+ rte_pktmbuf_free_bulk(mbufs, received);
+ cleanup_pcap_vdev("net_pcap_var", port_id);
+
+ printf("RX varied sizes PASSED: %u packets with correct sizes\n", received);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: Infinite RX mode - loops through pcap file continuously
+ */
+static int
+test_infinite_rx(void)
+{
+ struct rte_mbuf *mbufs[MAX_PKT_BURST];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int total_rx = 0;
+ int iter, attempts;
+
+ printf("Testing infinite RX mode\n");
+
+ TEST_ASSERT(create_temp_path(infinite_pcap_path, sizeof(infinite_pcap_path),
+ "pcap_inf") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_test_pcap(infinite_pcap_path, NUM_PACKETS) == 0,
+ "Failed to create input pcap");
+
+ snprintf(devargs, sizeof(devargs),
+ "rx_pcap=%s,infinite_rx=1", infinite_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_inf", devargs, &port_id) == 0,
+ "Failed to create infinite RX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup infinite RX port");
+
+ /* Read more packets than file contains to verify looping */
+ for (iter = 0; iter < 3 && total_rx < NUM_PACKETS * 2; iter++) {
+ for (attempts = 0; attempts < 100 && total_rx < NUM_PACKETS * 2;
+ attempts++) {
+ uint16_t nb_rx = rte_eth_rx_burst(port_id, 0, mbufs,
+ MAX_PKT_BURST);
+ if (nb_rx > 0)
+ rte_pktmbuf_free_bulk(mbufs, nb_rx);
+ total_rx += nb_rx;
+ if (nb_rx == 0)
+ usleep(100);
+ }
+ }
+
+ cleanup_pcap_vdev("net_pcap_inf", port_id);
+
+ TEST_ASSERT(total_rx >= NUM_PACKETS * 2,
+ "Infinite RX: got %u packets, need >= %d",
+ total_rx, NUM_PACKETS * 2);
+
+ printf("Infinite RX PASSED: %u packets (file has %d)\n",
+ total_rx, NUM_PACKETS);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: TX drop mode - packets dropped when no tx_pcap specified
+ */
+static int
+test_tx_drop(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ struct rte_eth_stats stats;
+ char devargs[256];
+ uint16_t port_id;
+ int nb_tx;
+
+ printf("Testing TX drop mode\n");
+
+ TEST_ASSERT(create_temp_path(rx_pcap_path, sizeof(rx_pcap_path),
+ "pcap_drop") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_test_pcap(rx_pcap_path, NUM_PACKETS) == 0,
+ "Failed to create input pcap");
+
+ /* Only rx_pcap - TX should silently drop */
+ snprintf(devargs, sizeof(devargs), "rx_pcap=%s", rx_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_drop", devargs, &port_id) == 0,
+ "Failed to create drop vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup drop port");
+ TEST_ASSERT(alloc_test_mbufs(mbufs, NUM_PACKETS) == 0,
+ "Failed to allocate mbufs");
+
+ TEST_ASSERT(rte_eth_stats_reset(port_id) == 0,
+ "Failed to reset stats");
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, NUM_PACKETS);
+
+ /* Packets should be accepted even in drop mode */
+ TEST_ASSERT_EQUAL(nb_tx, NUM_PACKETS,
+ "Drop mode TX: %d/%d accepted", nb_tx, NUM_PACKETS);
+
+ TEST_ASSERT(rte_eth_stats_get(port_id, &stats) == 0,
+ "Failed to get stats");
+ cleanup_pcap_vdev("net_pcap_drop", port_id);
+
+ printf("TX drop PASSED: %d packets dropped, opackets=%" PRIu64"\n",
+ nb_tx, stats.opackets);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: Statistics accuracy and reset
+ */
+static int
+test_stats(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ struct rte_eth_stats stats;
+ char devargs[256];
+ char stats_tx_path[PATH_MAX];
+ uint16_t port_id;
+ unsigned int received;
+ int nb_tx;
+
+ printf("Testing statistics accuracy\n");
+
+ TEST_ASSERT(create_temp_path(rx_pcap_path, sizeof(rx_pcap_path),
+ "pcap_stats_rx") == 0,
+ "Failed to create RX temp path");
+ TEST_ASSERT(create_temp_path(stats_tx_path, sizeof(stats_tx_path),
+ "pcap_stats_tx") == 0,
+ "Failed to create TX temp path");
+ TEST_ASSERT(create_test_pcap(rx_pcap_path, NUM_PACKETS) == 0,
+ "Failed to create input pcap");
+
+ snprintf(devargs, sizeof(devargs),
+ "rx_pcap=%s,tx_pcap=%s", rx_pcap_path, stats_tx_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_stats", devargs, &port_id) == 0,
+ "Failed to create stats vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup stats port");
+
+ /* Verify stats start at zero */
+ TEST_ASSERT(rte_eth_stats_reset(port_id) == 0,
+ "Failed to reset stats");
+ TEST_ASSERT(rte_eth_stats_get(port_id, &stats) == 0,
+ "Failed to get stats");
+ TEST_ASSERT(stats.ipackets == 0 && stats.opackets == 0 &&
+ stats.ibytes == 0 && stats.obytes == 0,
+ "Initial stats not zero");
+
+ /* RX and verify stats */
+ receive_packets(port_id, mbufs, NUM_PACKETS, &received);
+ TEST_ASSERT(rte_eth_stats_get(port_id, &stats) == 0,
+ "Failed to get stats after RX");
+ TEST_ASSERT_EQUAL(stats.ipackets, received,
+ "RX stats: ipackets=%"PRIu64", received=%u",
+ stats.ipackets, received);
+
+ /* TX and verify stats */
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, received);
+ TEST_ASSERT(rte_eth_stats_get(port_id, &stats) == 0,
+ "Failed to get stats after TX");
+ TEST_ASSERT_EQUAL(stats.opackets, (uint64_t)nb_tx,
+ "TX stats: opackets=%"PRIu64", sent=%u",
+ stats.opackets, nb_tx);
+
+ /* Verify stats reset */
+ TEST_ASSERT(rte_eth_stats_reset(port_id) == 0,
+ "Failed to reset stats");
+ TEST_ASSERT(rte_eth_stats_get(port_id, &stats) == 0,
+ "Failed to get stats after reset");
+ TEST_ASSERT(stats.ipackets == 0 && stats.opackets == 0,
+ "Stats not reset to zero");
+
+ cleanup_pcap_vdev("net_pcap_stats", port_id);
+ unlink(stats_tx_path);
+
+ printf("Statistics PASSED: RX=%u, TX=%d\n", received, nb_tx);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: MTU configuration
+ */
+static int
+test_set_mtu(void)
+{
+ char devargs[256];
+ char mtu_tx_path[PATH_MAX];
+ uint16_t port_id;
+ static const uint16_t mtu_values[] = {1500, 9000, 1280};
+ int ret = 0;
+ size_t i;
+
+ printf("Testing MTU configuration\n");
+
+ TEST_ASSERT(create_temp_path(rx_pcap_path, sizeof(rx_pcap_path),
+ "pcap_mtu_rx") == 0,
+ "Failed to create RX temp path");
+ TEST_ASSERT(create_temp_path(mtu_tx_path, sizeof(mtu_tx_path),
+ "pcap_mtu_tx") == 0,
+ "Failed to create TX temp path");
+ TEST_ASSERT(create_test_pcap(rx_pcap_path, 1) == 0,
+ "Failed to create input pcap");
+
+ snprintf(devargs, sizeof(devargs),
+ "rx_pcap=%s,tx_pcap=%s", rx_pcap_path, mtu_tx_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_mtu", devargs, &port_id) == 0,
+ "Failed to create MTU vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup MTU port");
+
+ for (i = 0; i < RTE_DIM(mtu_values); i++) {
+ uint16_t mtu;
+
+ ret = rte_eth_dev_set_mtu(port_id, mtu_values[i]);
+ if (ret != 0)
+ break;
+
+ TEST_ASSERT(rte_eth_dev_get_mtu(port_id, &mtu) == 0, "Failed to get MTU");
+ TEST_ASSERT_EQUAL(mtu, mtu_values[i], "MTU set mismatch for %u", mtu_values[i]);
+ }
+
+ cleanup_pcap_vdev("net_pcap_mtu", port_id);
+ unlink(mtu_tx_path);
+
+ if (ret == 0) {
+ printf("MTU test completed\n");
+ return TEST_SUCCESS;
+ }
+
+ if (ret == -ENOTSUP) {
+ printf("MTU set not supported\n");
+ return TEST_SKIPPED;
+ }
+
+ printf("Failed to set MTU: %s", strerror(-ret));
+ return TEST_FAILED;
+}
+
+/*
+ * Test: Jumbo frame RX (multi-segment mbufs)
+ */
+static int
+test_jumbo_rx(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int received, i;
+ const unsigned int num_jumbo = 16;
+
+ printf("Testing jumbo frame RX (%u byte packets, multi-segment)\n",
+ PKT_SIZE_JUMBO);
+
+ TEST_ASSERT(create_temp_path(jumbo_pcap_path, sizeof(jumbo_pcap_path),
+ "pcap_jumbo") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_sized_pcap(jumbo_pcap_path, num_jumbo,
+ PKT_SIZE_JUMBO) == 0,
+ "Failed to create jumbo pcap");
+
+ snprintf(devargs, sizeof(devargs), "rx_pcap=%s", jumbo_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_jumbo", devargs, &port_id) == 0,
+ "Failed to create jumbo RX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup jumbo RX port");
+
+ receive_packets(port_id, mbufs, num_jumbo, &received);
+ TEST_ASSERT_EQUAL(received, num_jumbo,
+ "Received %u packets, expected %u", received, num_jumbo);
+
+ /* Verify all packets are jumbo size (may be multi-segment) */
+ for (i = 0; i < received; i++) {
+ uint32_t pkt_len = rte_pktmbuf_pkt_len(mbufs[i]);
+ uint16_t nb_segs = mbufs[i]->nb_segs;
+
+ TEST_ASSERT_EQUAL(pkt_len, PKT_SIZE_JUMBO,
+ "Packet %u: size %u, expected %u",
+ i, pkt_len, PKT_SIZE_JUMBO);
+
+ /* Jumbo frames should use multiple segments */
+ if (nb_segs > 1)
+ printf(" Packet %u: %u segments\n", i, nb_segs);
+ }
+
+ rte_pktmbuf_free_bulk(mbufs, received);
+ cleanup_pcap_vdev("net_pcap_jumbo", port_id);
+
+ printf("Jumbo RX PASSED: %u jumbo packets received\n", received);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: Jumbo frame TX (multi-segment mbufs)
+ */
+static int
+test_jumbo_tx(void)
+{
+ struct rte_mbuf *mbufs[MAX_PKT_BURST];
+ char tx_path[PATH_MAX];
+ char devargs[256];
+ uint16_t port_id;
+ uint16_t sizes[MAX_PKT_BURST];
+ int nb_tx, pkt_count, ret;
+ unsigned int i;
+ const unsigned int num_jumbo = 8;
+
+ printf("Testing jumbo frame TX (multi-segment mbufs)\n");
+
+ TEST_ASSERT(create_temp_path(tx_path, sizeof(tx_path),
+ "pcap_jumbo_tx") == 0,
+ "Failed to create temp file path");
+
+ snprintf(devargs, sizeof(devargs), "tx_pcap=%s", tx_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_jumbo_tx", devargs, &port_id) == 0,
+ "Failed to create TX vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup TX port");
+
+ /* Set MTU to allow jumbo frames - PMD drops packets exceeding MTU */
+ ret = rte_eth_dev_set_mtu(port_id, PKT_SIZE_JUMBO);
+ if (ret != 0) {
+ printf("Failed to set MTU to %u: %s\n",
+ PKT_SIZE_JUMBO, rte_strerror(-ret));
+ cleanup_pcap_vdev("net_pcap_jumbo_tx", port_id);
+ unlink(tx_path);
+ return TEST_SKIPPED;
+ }
+
+ /* Allocate multi-segment mbufs for jumbo frames */
+ for (i = 0; i < num_jumbo; i++) {
+ mbufs[i] = alloc_jumbo_mbuf(PKT_SIZE_JUMBO, (uint8_t)(i & 0xFF));
+ if (mbufs[i] == NULL) {
+ /* Free already allocated mbufs */
+ while (i > 0)
+ rte_pktmbuf_free(mbufs[--i]);
+ cleanup_pcap_vdev("net_pcap_jumbo_tx", port_id);
+ unlink(tx_path);
+ return TEST_FAILED;
+ }
+ printf(" Packet %u: %u segments for %u bytes\n",
+ i, mbufs[i]->nb_segs, PKT_SIZE_JUMBO);
+ }
+
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, num_jumbo);
+ /* Free any unsent mbufs */
+ for (i = nb_tx; i < num_jumbo; i++)
+ rte_pktmbuf_free(mbufs[i]);
+
+ TEST_ASSERT_EQUAL(nb_tx, (int)num_jumbo,
+ "TX burst failed: sent %d/%u", nb_tx, num_jumbo);
+
+ cleanup_pcap_vdev("net_pcap_jumbo_tx", port_id);
+
+ /* Verify pcap file has correct packet count and sizes */
+ pkt_count = get_pcap_packet_sizes(tx_path, sizes, MAX_PKT_BURST);
+ TEST_ASSERT_EQUAL(pkt_count, (int)num_jumbo,
+ "Pcap file has %d packets, expected %u",
+ pkt_count, num_jumbo);
+
+ for (i = 0; i < (unsigned int)pkt_count; i++) {
+ TEST_ASSERT_EQUAL(sizes[i], PKT_SIZE_JUMBO,
+ "Packet %u: size %u, expected %u",
+ i, sizes[i], PKT_SIZE_JUMBO);
+ }
+
+ unlink(tx_path);
+
+ printf("Jumbo TX PASSED: %d jumbo packets written\n", nb_tx);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: Layering on Linux network interface
+ */
+static int
+test_iface(void)
+{
+ struct rte_mbuf *mbufs[MAX_PKT_BURST];
+ struct rte_eth_dev_info dev_info;
+ char devargs[256];
+ uint16_t port_id;
+ const char *iface;
+ int ret, nb_tx, nb_pkt;
+
+ printf("Testing pcap on network interface\n");
+
+ iface = find_test_iface();
+ if (iface == NULL) {
+ printf("No suitable interface, skipping\n");
+ return TEST_SKIPPED;
+ }
+ printf("Using interface: %s\n", iface);
+
+ snprintf(devargs, sizeof(devargs), "iface=%s", iface);
+ if (rte_vdev_init("net_pcap_iface", devargs) < 0) {
+ printf("Cannot create iface vdev (needs root?), skipping\n");
+ return TEST_SKIPPED;
+ }
+
+ TEST_ASSERT(rte_eth_dev_get_port_by_name("net_pcap_iface",
+ &port_id) == 0,
+ "Failed to get iface port ID");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup iface port");
+
+ ret = rte_eth_dev_info_get(port_id, &dev_info);
+ TEST_ASSERT(ret == 0, "Failed to get dev info: %s", rte_strerror(-ret));
+
+ printf("Driver: %s, max_rx_queues=%u, max_tx_queues=%u\n",
+ dev_info.driver_name, dev_info.max_rx_queues,
+ dev_info.max_tx_queues);
+
+ /* Use packet_burst_generator for interface test */
+ nb_pkt = generate_test_packets(mp, mbufs, MAX_PKT_BURST,
+ PACKET_BURST_GEN_PKT_LEN);
+ TEST_ASSERT(nb_pkt > 0, "Failed to generate packets");
+
+ nb_tx = rte_eth_tx_burst(port_id, 0, mbufs, nb_pkt);
+ if (nb_tx < nb_pkt)
+ rte_pktmbuf_free_bulk(&mbufs[nb_tx], nb_pkt - nb_tx);
+
+ cleanup_pcap_vdev("net_pcap_iface", port_id);
+
+ printf("Interface test PASSED: sent %d packets\n", nb_tx);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test: MAC address with phy_mac option
+ */
+static int
+test_mac_address(void)
+{
+ struct rte_ether_addr orig_mac, new_mac, read_mac;
+ char devargs[256];
+ uint16_t port_id;
+ const char *iface;
+ int ret;
+
+ printf("Testing MAC address configuration\n");
+
+ iface = find_test_iface();
+ if (iface == NULL) {
+ printf("No suitable interface, skipping\n");
+ return TEST_SKIPPED;
+ }
+
+ if (strcmp(iface, "lo") == 0) {
+ printf("Need dummy interface to test setting mac address\n");
+ return TEST_SKIPPED;
+ }
+
+ snprintf(devargs, sizeof(devargs), "iface=%s,phy_mac=1", iface);
+ if (rte_vdev_init("net_pcap_mac", devargs) < 0) {
+ printf("Cannot create mac vdev (needs root?), skipping\n");
+ return TEST_SKIPPED;
+ }
+
+ TEST_ASSERT(rte_eth_dev_get_port_by_name("net_pcap_mac", &port_id) == 0,
+ "Failed to get mac port ID");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup mac port");
+
+ ret = rte_eth_macaddr_get(port_id, &orig_mac);
+ TEST_ASSERT(ret == 0, "Failed to get original MAC");
+ printf("Original MAC: " RTE_ETHER_ADDR_PRT_FMT "\n",
+ RTE_ETHER_ADDR_BYTES(&orig_mac));
+
+ /* Try to set a new MAC */
+ rte_eth_random_addr(new_mac.addr_bytes);
+
+ ret = rte_eth_dev_default_mac_addr_set(port_id, &new_mac);
+ if (ret == 0) {
+ rte_eth_macaddr_get(port_id, &read_mac);
+ printf("New MAC: " RTE_ETHER_ADDR_PRT_FMT "\n",
+ RTE_ETHER_ADDR_BYTES(&read_mac));
+ /* Restore original */
+ rte_eth_dev_default_mac_addr_set(port_id, &orig_mac);
+ ret = TEST_SUCCESS;
+ } else if (ret == -ENOTSUP) {
+ printf("MAC change not supported\n");
+ ret = TEST_SKIPPED;
+ } else {
+ printf("MAC change failed: %s\n", rte_strerror(-ret));
+ ret = TEST_FAILED;
+ }
+
+ cleanup_pcap_vdev("net_pcap_mac", port_id);
+
+ printf("MAC address test completed\n");
+ return ret;
+}
+
+/*
+ * Test: Verify receive timestamps from pcap file
+ */
+static int
+test_rx_timestamp(void)
+{
+ struct rte_mbuf *mbufs[NUM_PACKETS];
+ char devargs[256];
+ uint16_t port_id;
+ unsigned int received, i;
+ const uint32_t base_sec = 1000;
+ const uint32_t usec_increment = 10000; /* 10ms between packets */
+ rte_mbuf_timestamp_t prev_ts = 0;
+
+ printf("Testing RX timestamp accuracy\n");
+
+ TEST_ASSERT(create_temp_path(timestamp_pcap_path, sizeof(timestamp_pcap_path),
+ "pcap_ts") == 0,
+ "Failed to create temp path");
+ TEST_ASSERT(create_timestamped_pcap(timestamp_pcap_path, NUM_PACKETS,
+ base_sec, usec_increment) == 0,
+ "Failed to create timestamped pcap");
+
+ snprintf(devargs, sizeof(devargs), "rx_pcap=%s", timestamp_pcap_path);
+ TEST_ASSERT(create_pcap_vdev("net_pcap_ts", devargs, &port_id) == 0,
+ "Failed to create timestamp vdev");
+ TEST_ASSERT(setup_pcap_port(port_id) == 0,
+ "Failed to setup timestamp port");
+
+ /* Try to initialize timestamp dynamic field access */
+ TEST_ASSERT(timestamp_init() == 0, "Timestamp dynfield not available");
+
+ receive_packets(port_id, mbufs, NUM_PACKETS, &received);
+ TEST_ASSERT_EQUAL(received, NUM_PACKETS,
+ "Received %u packets, expected %d", received, NUM_PACKETS);
+
+ /* Check if first packet has timestamp flag set */
+ if (!mbuf_has_timestamp(mbufs[0])) {
+ printf("Timestamps not enabled in mbufs, skipping validation\n");
+ rte_pktmbuf_free_bulk(mbufs, received);
+ cleanup_pcap_vdev("net_pcap_ts", port_id);
+ return TEST_SUCCESS;
+ }
+
+ for (i = 0; i < received; i++) {
+ struct rte_mbuf *m = mbufs[i];
+
+ TEST_ASSERT(mbuf_has_timestamp(m),
+ "Packet %u missing timestamp flag", i);
+
+ /* PCAP PMD stores timestamp in nanoseconds */
+ rte_mbuf_timestamp_t ts = mbuf_timestamp_get(mbufs[i]);
+ uint64_t expected = (uint64_t)base_sec * NS_PER_S
+ + (uint64_t)i * usec_increment * 1000;
+
+ if (ts != expected)
+ printf("Packet %u: timestamp mismatch, expected=%"PRIu64" actual=%"PRIu64"\n",
+ i, expected, ts);
+
+ /* Verify monotonically increasing timestamps */
+ if (i > 0) {
+ TEST_ASSERT(ts >= prev_ts,
+ "Packet %u: timestamp not monotonic (prev=%"PRIu64", curr=%"PRIu64")",
+ i, prev_ts, ts);
+ }
+ prev_ts = ts;
+ }
+
+ rte_pktmbuf_free_bulk(mbufs, received);
+ cleanup_pcap_vdev("net_pcap_ts", port_id);
+
+ printf("RX timestamp PASSED: %u packets with valid timestamps\n", received);
+ return TEST_SUCCESS;
+}
+
+/*
+ * Test suite setup
+ */
+static int
+test_setup(void)
+{
+ /* Generate random source MAC address */
+ rte_eth_random_addr(src_mac.addr_bytes);
+
+ mp = rte_pktmbuf_pool_create("pcap_test_pool", NB_MBUF, 32, 0,
+ RTE_MBUF_DEFAULT_BUF_SIZE,
+ rte_socket_id());
+ TEST_ASSERT_NOT_NULL(mp, "Failed to create mempool");
+
+ return 0;
+}
+
+/*
+ * Test suite teardown
+ */
+static void
+test_teardown(void)
+{
+ /* Cleanup temp files */
+ if (tx_pcap_path[0] != '\0')
+ unlink(tx_pcap_path);
+ if (rx_pcap_path[0] != '\0')
+ unlink(rx_pcap_path);
+ if (infinite_pcap_path[0] != '\0')
+ unlink(infinite_pcap_path);
+ if (timestamp_pcap_path[0] != '\0')
+ unlink(timestamp_pcap_path);
+ if (varied_pcap_path[0] != '\0')
+ unlink(varied_pcap_path);
+ if (jumbo_pcap_path[0] != '\0')
+ unlink(jumbo_pcap_path);
+
+ rte_mempool_free(mp);
+ mp = NULL;
+}
+
+static struct unit_test_suite test_pmd_pcap_suite = {
+ .setup = test_setup,
+ .teardown = test_teardown,
+ .suite_name = "PCAP PMD Unit Test Suite",
+ .unit_test_cases = {
+ TEST_CASE(test_tx_to_file),
+ TEST_CASE(test_rx_from_file),
+ TEST_CASE(test_tx_varied_sizes),
+ TEST_CASE(test_rx_varied_sizes),
+ TEST_CASE(test_jumbo_rx),
+ TEST_CASE(test_jumbo_tx),
+ TEST_CASE(test_infinite_rx),
+ TEST_CASE(test_tx_drop),
+ TEST_CASE(test_stats),
+ TEST_CASE(test_set_mtu),
+ TEST_CASE(test_iface),
+ TEST_CASE(test_mac_address),
+ TEST_CASE(test_rx_timestamp),
+ TEST_CASES_END()
+ }
+};
+
+static int
+test_pmd_pcap(void)
+{
+ return unit_test_suite_runner(&test_pmd_pcap_suite);
+}
+
+REGISTER_FAST_TEST(pcap_pmd_autotest, true, true, test_pmd_pcap);
--
2.51.0