rte_mbuf - Man Page

void * buf_addr
struct rte_mbuf * next
uint16_t refcnt
uint16_t nb_segs
uint16_t port
uint64_t ol_flags
uint32_t pkt_len
uint16_t data_len
uint16_t vlan_tci
uint16_t vlan_tci_outer
uint16_t buf_len
struct rte_mempool * pool
uint64_t dynfield2
struct rte_mbuf_ext_shared_info * shinfo
uint16_t priv_size
uint16_t timesync
uint32_t dynfield1 [9]

Virtual address of segment buffer.

Definition at line 469 of file rte_mbuf_core.h.

Next segment of scattered packet. This field is valid when physical address field is undefined. Otherwise next pointer in the second cache line will be used.

Definition at line 486 of file rte_mbuf_core.h.

Reference counter. Its size should at least equal to the size of port field (16 bits), to support zero-copy broadcast. It should only be accessed using the following functions: rte_mbuf_refcnt_update(), rte_mbuf_refcnt_read(), and rte_mbuf_refcnt_set(). The functionality of these functions (atomic, or non-atomic) is controlled by the RTE_MBUF_REFCNT_ATOMIC flag.

Definition at line 501 of file rte_mbuf_core.h.

Number of segments. Only valid for the first segment of an mbuf chain.

Definition at line 507 of file rte_mbuf_core.h.

Input port (16 bits to support more than 256 virtual ports). The event eth Tx adapter uses this field to specify the output port.

Definition at line 512 of file rte_mbuf_core.h.

Offload features.

Definition at line 514 of file rte_mbuf_core.h.

L2/L3/L4 and tunnel information.

Definition at line 527 of file rte_mbuf_core.h.

(Outer) L2 type.

Definition at line 530 of file rte_mbuf_core.h.

(Outer) L3 type.

Definition at line 531 of file rte_mbuf_core.h.

(Outer) L4 type.

Definition at line 532 of file rte_mbuf_core.h.

Tunnel type.

Definition at line 533 of file rte_mbuf_core.h.

ESP next protocol type, valid if RTE_PTYPE_TUNNEL_ESP tunnel type is set on both Tx and Rx.

Definition at line 535 of file rte_mbuf_core.h.

Inner L2 type.

Definition at line 542 of file rte_mbuf_core.h.

Inner L3 type.

Definition at line 544 of file rte_mbuf_core.h.

Inner L4 type.

Definition at line 548 of file rte_mbuf_core.h.

Total pkt len: sum of all segments.

Definition at line 552 of file rte_mbuf_core.h.

Amount of data in segment buffer.

Definition at line 553 of file rte_mbuf_core.h.

VLAN TCI (CPU order), valid if RTE_MBUF_F_RX_VLAN is set.

Definition at line 555 of file rte_mbuf_core.h.

RSS hash result if RSS enabled

Definition at line 559 of file rte_mbuf_core.h.

Second 4 flexible bytes

Definition at line 566 of file rte_mbuf_core.h.

First 4 flexible bytes or FD ID, dependent on RTE_MBUF_F_RX_FDIR_* flag in ol_flags.

Definition at line 569 of file rte_mbuf_core.h.

Filter identifier if FDIR enabled

Hierarchical scheduler : 8 bytes

Definition at line 574 of file rte_mbuf_core.h.

The event eth Tx adapter uses this field to store Tx queue id.

See also

rte_event_eth_tx_adapter_txq_set()

Definition at line 579 of file rte_mbuf_core.h.

Eventdev ethdev Tx adapter

User defined tags. See rte_distributor_process()

Definition at line 585 of file rte_mbuf_core.h.

hash information

Outer VLAN TCI (CPU order), valid if RTE_MBUF_F_RX_QINQ is set.

Definition at line 591 of file rte_mbuf_core.h.

Length of segment buffer.

Definition at line 593 of file rte_mbuf_core.h.

Pool from which mbuf was allocated.

Definition at line 595 of file rte_mbuf_core.h.

Reserved for dynamic fields when the next pointer is in first cache line (i.e. RTE_IOVA_IN_MBUF is 0).

Definition at line 611 of file rte_mbuf_core.h.

combined for easy fetch

Definition at line 616 of file rte_mbuf_core.h.

L2 (MAC) Header Length for non-tunneling pkt. Outer_L4_len + ... + Inner_L2_len for tunneling pkt.

Definition at line 619 of file rte_mbuf_core.h.

L3 (IP) Header Length.

Definition at line 623 of file rte_mbuf_core.h.

L4 (TCP/UDP) Header Length.

Definition at line 625 of file rte_mbuf_core.h.

TCP TSO segment size

Definition at line 627 of file rte_mbuf_core.h.

Outer L3 (IP) Hdr Length.

Definition at line 642 of file rte_mbuf_core.h.

Outer L2 (MAC) Hdr Length.

Definition at line 644 of file rte_mbuf_core.h.

Shared data for external buffer attached to mbuf. See rte_pktmbuf_attach_extbuf().

Definition at line 654 of file rte_mbuf_core.h.

Size of the application private data. In case of an indirect mbuf, it stores the direct mbuf private data size.

Definition at line 659 of file rte_mbuf_core.h.

Timesync flags for use with IEEE1588.

Definition at line 662 of file rte_mbuf_core.h.

Reserved for dynamic fields.

Definition at line 664 of file rte_mbuf_core.h.