The public API headers are grouped by topics:

device: dev, ethdev, ethctrl, rte_flow, rte_tm, rte_mtr, bbdev, cryptodev, security, compressdev, compress, eventdev, event_eth_rx_adapter, event_eth_tx_adapter, event_timer_adapter, event_crypto_adapter, rawdev, metrics, bitrate, latency, devargs, PCI, vdev, vfio
device specific: softnic, bond, vhost, vdpa, KNI, ixgbe, i40e, ice, bnxt, dpaa, dpaa2, dpaa2_mempool, dpaa2_cmdif, dpaa2_qdma, crypto_scheduler
memory: memseg, memzone, mempool, malloc, memcpy
timers: cycles, timer, alarm
locks: atomic, mcslock, rwlock, spinlock, ticketlock, RCU
CPU arch: branch prediction, cache prefetch, SIMD, byte order, CPU flags, CPU pause, I/O access
CPU multicore: interrupts, launch, lcore, per-lcore, service cores, keepalive, power/freq
layers: ethernet, ARP, HIGIG, ICMP, ESP, IPsec, IPsec group, IPsec SA, IPsec SAD, IP, SCTP, TCP, UDP, GTP, GRO, GSO, frag/reass, VXLAN
QoS: metering, scheduler, RED congestion
routing: LPM IPv4 route, LPM IPv6 route, RIB IPv4, RIB IPv6, FIB IPv4, FIB IPv6
hashes: hash, jhash, thash, FBK hash, CRC hash
classification reorder, distributor, EFD, ACL, member, flow classify, BPF
containers: mbuf, mbuf pool ops, ring, stack, tailq, bitmap
packet framework:
- port: ethdev, ring, frag, reass, sched, kni, src/sink
- table: lpm IPv4, lpm IPv6, ACL, hash, array, stub
- pipeline port_in_action table_action
basic: approx fraction, random, config file, key/value args, string
debug: jobstats, telemetry, pdump, hexdump, debug, log, errno
misc: EAL config, common, experimental APIs, ABI versioning, version