d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
5139502783
numam-dpdk/lib/mbuf/rte_mbuf_core.h
Eli Britstein da0333c879 mbuf: avoid cast-align warning in data offset macro 
In rte_pktmbuf_mtod_offset macro, there is a casting from char * to type
't', which may cause cast-align warning when using strict cast align
flag with supporting gcc:
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
CFLAGS="-Wcast-align=strict" make V=1 -C examples/l2fwd clean static

main.c: In function 'l2fwd_mac_updating':
/dpdk/build/include/rte_mbuf_core.h:719:3: warning: cast increases
required alignment of target type [-Wcast-align]
  719 |  ((t)((char *)(m)->buf_addr + (m)->data_off + (o)))
      |   ^
/dpdk/build/include/rte_mbuf_core.h:733:32: note: in expansion of macro
'rte_pktmbuf_mtod_offset'
  733 | #define rte_pktmbuf_mtod(m, t) rte_pktmbuf_mtod_offset(m, t, 0)
      |                                ^~~~~~~~~~~~~~~~~~~~~~~

As the code assumes correct alignment, add first a (void *) casting, to
avoid the warning.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Eli Britstein <elibr@nvidia.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2021-10-25 17:27:48 +02:00

868 lines
31 KiB
C
Raw Blame History

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright 2014 6WIND S.A.
*/
#ifndef _RTE_MBUF_CORE_H_
#define _RTE_MBUF_CORE_H_
/**
* @file
* This file contains definion of RTE mbuf structure itself,
* packet offload flags and some related macros.
* For majority of DPDK entities, it is not recommended to include
* this file directly, use include <rte_mbuf.h> instead.
*
* New fields and flags should fit in the "dynamic space".
*/
#include <stdint.h>
#include <rte_compat.h>
#include <rte_byteorder.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Packet Offload Features Flags. It also carry packet type information.
* Critical resources. Both rx/tx shared these bits. Be cautious on any change
*
* - RX flags start at bit position zero, and get added to the left of previous
* flags.
* - The most-significant 3 bits are reserved for generic mbuf flags
* - TX flags therefore start at bit position 60 (i.e. 63-3), and new flags get
* added to the right of the previously defined flags i.e. they should count
* downwards, not upwards.
*
* Keep these flags synchronized with rte_get_rx_ol_flag_name() and
* rte_get_tx_ol_flag_name().
*/
/**
* The RX packet is a 802.1q VLAN packet, and the tci has been
* saved in in mbuf->vlan_tci.
* If the flag RTE_MBUF_F_RX_VLAN_STRIPPED is also present, the VLAN
* header has been stripped from mbuf data, else it is still
* present.
*/
#define RTE_MBUF_F_RX_VLAN (1ULL << 0)
#define PKT_RX_VLAN RTE_DEPRECATED(PKT_RX_VLAN) RTE_MBUF_F_RX_VLAN
/** RX packet with RSS hash result. */
#define RTE_MBUF_F_RX_RSS_HASH (1ULL << 1)
#define PKT_RX_RSS_HASH RTE_DEPRECATED(PKT_RX_RSS_HASH) RTE_MBUF_F_RX_RSS_HASH
/** RX packet with FDIR match indicate. */
#define RTE_MBUF_F_RX_FDIR (1ULL << 2)
#define PKT_RX_FDIR RTE_DEPRECATED(PKT_RX_FDIR) RTE_MBUF_F_RX_FDIR
/**
* This flag is set when the outermost IP header checksum is detected as
* wrong by the hardware.
*/
#define RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD (1ULL << 5)
#define PKT_RX_OUTER_IP_CKSUM_BAD RTE_DEPRECATED(PKT_RX_OUTER_IP_CKSUM_BAD) \
RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD
/**
* A vlan has been stripped by the hardware and its tci is saved in
* mbuf->vlan_tci. This can only happen if vlan stripping is enabled
* in the RX configuration of the PMD.
* When RTE_MBUF_F_RX_VLAN_STRIPPED is set, RTE_MBUF_F_RX_VLAN must also be set.
*/
#define RTE_MBUF_F_RX_VLAN_STRIPPED (1ULL << 6)
#define PKT_RX_VLAN_STRIPPED RTE_DEPRECATED(PKT_RX_VLAN_STRIPPED) \
RTE_MBUF_F_RX_VLAN_STRIPPED
/**
* Mask of bits used to determine the status of RX IP checksum.
* - RTE_MBUF_F_RX_IP_CKSUM_UNKNOWN: no information about the RX IP checksum
* - RTE_MBUF_F_RX_IP_CKSUM_BAD: the IP checksum in the packet is wrong
* - RTE_MBUF_F_RX_IP_CKSUM_GOOD: the IP checksum in the packet is valid
* - RTE_MBUF_F_RX_IP_CKSUM_NONE: the IP checksum is not correct in the packet
* data, but the integrity of the IP header is verified.
*/
#define RTE_MBUF_F_RX_IP_CKSUM_MASK ((1ULL << 4) | (1ULL << 7))
#define PKT_RX_IP_CKSUM_MASK RTE_DEPRECATED(PKT_RX_IP_CKSUM_MASK) \
RTE_MBUF_F_RX_IP_CKSUM_MASK
#define RTE_MBUF_F_RX_IP_CKSUM_UNKNOWN 0
#define RTE_MBUF_F_RX_IP_CKSUM_BAD (1ULL << 4)
#define RTE_MBUF_F_RX_IP_CKSUM_GOOD (1ULL << 7)
#define RTE_MBUF_F_RX_IP_CKSUM_NONE ((1ULL << 4) | (1ULL << 7))
#define PKT_RX_IP_CKSUM_UNKNOWN RTE_DEPRECATED(PKT_RX_IP_CKSUM_UNKNOWN) \
RTE_MBUF_F_RX_IP_CKSUM_UNKNOWN
#define PKT_RX_IP_CKSUM_BAD RTE_DEPRECATED(PKT_RX_IP_CKSUM_BAD) \
RTE_MBUF_F_RX_IP_CKSUM_BAD
#define PKT_RX_IP_CKSUM_GOOD RTE_DEPRECATED(PKT_RX_IP_CKSUM_GOOD) \
RTE_MBUF_F_RX_IP_CKSUM_GOOD
#define PKT_RX_IP_CKSUM_NONE RTE_DEPRECATED(PKT_RX_IP_CKSUM_NONE) \
RTE_MBUF_F_RX_IP_CKSUM_NONE
/**
* Mask of bits used to determine the status of RX L4 checksum.
* - RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN: no information about the RX L4 checksum
* - RTE_MBUF_F_RX_L4_CKSUM_BAD: the L4 checksum in the packet is wrong
* - RTE_MBUF_F_RX_L4_CKSUM_GOOD: the L4 checksum in the packet is valid
* - RTE_MBUF_F_RX_L4_CKSUM_NONE: the L4 checksum is not correct in the packet
* data, but the integrity of the L4 data is verified.
*/
#define RTE_MBUF_F_RX_L4_CKSUM_MASK ((1ULL << 3) | (1ULL << 8))
#define PKT_RX_L4_CKSUM_MASK RTE_DEPRECATED(PKT_RX_L4_CKSUM_MASK) \
RTE_MBUF_F_RX_L4_CKSUM_MASK
#define RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN 0
#define RTE_MBUF_F_RX_L4_CKSUM_BAD (1ULL << 3)
#define RTE_MBUF_F_RX_L4_CKSUM_GOOD (1ULL << 8)
#define RTE_MBUF_F_RX_L4_CKSUM_NONE ((1ULL << 3) | (1ULL << 8))
#define PKT_RX_L4_CKSUM_UNKNOWN RTE_DEPRECATED(PKT_RX_L4_CKSUM_UNKNOWN) \
RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN
#define PKT_RX_L4_CKSUM_BAD RTE_DEPRECATED(PKT_RX_L4_CKSUM_BAD) \
RTE_MBUF_F_RX_L4_CKSUM_BAD
#define PKT_RX_L4_CKSUM_GOOD RTE_DEPRECATED(PKT_RX_L4_CKSUM_GOOD) \
RTE_MBUF_F_RX_L4_CKSUM_GOOD
#define PKT_RX_L4_CKSUM_NONE RTE_DEPRECATED(PKT_RX_L4_CKSUM_NONE) \
RTE_MBUF_F_RX_L4_CKSUM_NONE
/** RX IEEE1588 L2 Ethernet PT Packet. */
#define RTE_MBUF_F_RX_IEEE1588_PTP (1ULL << 9)
#define PKT_RX_IEEE1588_PTP RTE_DEPRECATED(PKT_RX_IEEE1588_PTP) \
RTE_MBUF_F_RX_IEEE1588_PTP
/** RX IEEE1588 L2/L4 timestamped packet.*/
#define RTE_MBUF_F_RX_IEEE1588_TMST (1ULL << 10)
#define PKT_RX_IEEE1588_TMST RTE_DEPRECATED(PKT_RX_IEEE1588_TMST) \
RTE_MBUF_F_RX_IEEE1588_TMST
/** FD id reported if FDIR match. */
#define RTE_MBUF_F_RX_FDIR_ID (1ULL << 13)
#define PKT_RX_FDIR_ID RTE_DEPRECATED(PKT_RX_FDIR_ID) \
RTE_MBUF_F_RX_FDIR_ID
/** Flexible bytes reported if FDIR match. */
#define RTE_MBUF_F_RX_FDIR_FLX (1ULL << 14)
#define PKT_RX_FDIR_FLX RTE_DEPRECATED(PKT_RX_FDIR_FLX) \
RTE_MBUF_F_RX_FDIR_FLX
/**
* The outer VLAN has been stripped by the hardware and its TCI is
* saved in mbuf->vlan_tci_outer.
* This can only happen if VLAN stripping is enabled in the Rx
* configuration of the PMD.
* When RTE_MBUF_F_RX_QINQ_STRIPPED is set, the flags RTE_MBUF_F_RX_VLAN
* and RTE_MBUF_F_RX_QINQ must also be set.
*
* - If both RTE_MBUF_F_RX_QINQ_STRIPPED and RTE_MBUF_F_RX_VLAN_STRIPPED are
* set, the 2 VLANs have been stripped by the hardware and their TCIs are
* saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer).
* - If RTE_MBUF_F_RX_QINQ_STRIPPED is set and RTE_MBUF_F_RX_VLAN_STRIPPED
* is unset, only the outer VLAN is removed from packet data, but both tci
* are saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer).
*/
#define RTE_MBUF_F_RX_QINQ_STRIPPED (1ULL << 15)
#define PKT_RX_QINQ_STRIPPED RTE_DEPRECATED(PKT_RX_QINQ_STRIPPED) \
RTE_MBUF_F_RX_QINQ_STRIPPED
/**
* When packets are coalesced by a hardware or virtual driver, this flag
* can be set in the RX mbuf, meaning that the m->tso_segsz field is
* valid and is set to the segment size of original packets.
*/
#define RTE_MBUF_F_RX_LRO (1ULL << 16)
#define PKT_RX_LRO RTE_DEPRECATED(PKT_RX_LRO) RTE_MBUF_F_RX_LRO
/* There is no flag defined at offset 17. It is free for any future use. */
/**
* Indicate that security offload processing was applied on the RX packet.
*/
#define RTE_MBUF_F_RX_SEC_OFFLOAD (1ULL << 18)
#define PKT_RX_SEC_OFFLOAD RTE_DEPRECATED(PKT_RX_SEC_OFFLOAD) \
RTE_MBUF_F_RX_SEC_OFFLOAD
/**
* Indicate that security offload processing failed on the RX packet.
*/
#define RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED (1ULL << 19)
#define PKT_RX_SEC_OFFLOAD_FAILED RTE_DEPRECATED(PKT_RX_SEC_OFFLOAD_FAILED) \
RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED
/**
* The RX packet is a double VLAN, and the outer tci has been
* saved in mbuf->vlan_tci_outer. If this flag is set, RTE_MBUF_F_RX_VLAN
* must also be set and the inner tci is saved in mbuf->vlan_tci.
* If the flag RTE_MBUF_F_RX_QINQ_STRIPPED is also present, both VLANs
* headers have been stripped from mbuf data, else they are still
* present.
*/
#define RTE_MBUF_F_RX_QINQ (1ULL << 20)
#define PKT_RX_QINQ RTE_DEPRECATED(PKT_RX_QINQ) RTE_MBUF_F_RX_QINQ
/**
* Mask of bits used to determine the status of outer RX L4 checksum.
* - RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN: no info about the outer RX L4
* checksum
* - RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD: the outer L4 checksum in the packet
* is wrong
* - RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD: the outer L4 checksum in the packet
* is valid
* - RTE_MBUF_F_RX_OUTER_L4_CKSUM_INVALID: invalid outer L4 checksum state.
*
* The detection of RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD shall be based on the
* given HW capability, At minimum, the PMD should support
* RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN and RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD
* states if the RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM offload is available.
*/
#define RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK ((1ULL << 21) | (1ULL << 22))
#define PKT_RX_OUTER_L4_CKSUM_MASK RTE_DEPRECATED(PKT_RX_OUTER_L4_CKSUM_MASK) \
RTE_MBUF_F_RX_OUTER_L4_CKSUM_MASK
#define RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN 0
#define RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD (1ULL << 21)
#define RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD (1ULL << 22)
#define RTE_MBUF_F_RX_OUTER_L4_CKSUM_INVALID ((1ULL << 21) | (1ULL << 22))
#define PKT_RX_OUTER_L4_CKSUM_UNKNOWN \
RTE_DEPRECATED(PKT_RX_OUTER_L4_CKSUM_UNKNOWN) \
RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN
#define PKT_RX_OUTER_L4_CKSUM_BAD RTE_DEPRECATED(PKT_RX_OUTER_L4_CKSUM_BAD) \
RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD
#define PKT_RX_OUTER_L4_CKSUM_GOOD RTE_DEPRECATED(PKT_RX_OUTER_L4_CKSUM_GOOD) \
RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD
#define PKT_RX_OUTER_L4_CKSUM_INVALID \
RTE_DEPRECATED(PKT_RX_OUTER_L4_CKSUM_INVALID) \
RTE_MBUF_F_RX_OUTER_L4_CKSUM_INVALID
/* add new RX flags here, don't forget to update RTE_MBUF_F_FIRST_FREE */
#define RTE_MBUF_F_FIRST_FREE (1ULL << 23)
#define PKT_FIRST_FREE RTE_DEPRECATED(PKT_FIRST_FREE) RTE_MBUF_F_FIRST_FREE
#define RTE_MBUF_F_LAST_FREE (1ULL << 40)
#define PKT_LAST_FREE RTE_DEPRECATED(PKT_LAST_FREE) RTE_MBUF_F_LAST_FREE
/* add new TX flags here, don't forget to update RTE_MBUF_F_LAST_FREE */
/**
* Outer UDP checksum offload flag. This flag is used for enabling
* outer UDP checksum in PMD. To use outer UDP checksum, the user needs to
* 1) Enable the following in mbuf,
* a) Fill outer_l2_len and outer_l3_len in mbuf.
* b) Set the RTE_MBUF_F_TX_OUTER_UDP_CKSUM flag.
* c) Set the RTE_MBUF_F_TX_OUTER_IPV4 or RTE_MBUF_F_TX_OUTER_IPV6 flag.
* 2) Configure RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM offload flag.
*/
#define RTE_MBUF_F_TX_OUTER_UDP_CKSUM (1ULL << 41)
#define PKT_TX_OUTER_UDP_CKSUM RTE_DEPRECATED(PKT_TX_OUTER_UDP_CKSUM) \
RTE_MBUF_F_TX_OUTER_UDP_CKSUM
/**
* UDP Fragmentation Offload flag. This flag is used for enabling UDP
* fragmentation in SW or in HW. When use UFO, mbuf->tso_segsz is used
* to store the MSS of UDP fragments.
*/
#define RTE_MBUF_F_TX_UDP_SEG (1ULL << 42)
#define PKT_TX_UDP_SEG RTE_DEPRECATED(PKT_TX_UDP_SEG) RTE_MBUF_F_TX_UDP_SEG
/**
* Request security offload processing on the TX packet.
* To use Tx security offload, the user needs to fill l2_len in mbuf
* indicating L2 header size and where L3 header starts.
*/
#define RTE_MBUF_F_TX_SEC_OFFLOAD (1ULL << 43)
#define PKT_TX_SEC_OFFLOAD RTE_DEPRECATED(PKT_TX_SEC_OFFLOAD) \
RTE_MBUF_F_TX_SEC_OFFLOAD
/**
* Offload the MACsec. This flag must be set by the application to enable
* this offload feature for a packet to be transmitted.
*/
#define RTE_MBUF_F_TX_MACSEC (1ULL << 44)
#define PKT_TX_MACSEC RTE_DEPRECATED(PKT_TX_MACSEC) RTE_MBUF_F_TX_MACSEC
/**
* Bits 45:48 used for the tunnel type.
* The tunnel type must be specified for TSO or checksum on the inner part
* of tunnel packets.
* These flags can be used with RTE_MBUF_F_TX_TCP_SEG for TSO, or
* RTE_MBUF_F_TX_xxx_CKSUM.
* The mbuf fields for inner and outer header lengths are required:
* outer_l2_len, outer_l3_len, l2_len, l3_len, l4_len and tso_segsz for TSO.
*/
#define RTE_MBUF_F_TX_TUNNEL_VXLAN (0x1ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_GRE (0x2ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_IPIP (0x3ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_GENEVE (0x4ULL << 45)
/** TX packet with MPLS-in-UDP RFC 7510 header. */
#define RTE_MBUF_F_TX_TUNNEL_MPLSINUDP (0x5ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_VXLAN_GPE (0x6ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_GTP (0x7ULL << 45)
#define RTE_MBUF_F_TX_TUNNEL_ESP (0x8ULL << 45)
/**
* Generic IP encapsulated tunnel type, used for TSO and checksum offload.
* It can be used for tunnels which are not standards or listed above.
* It is preferred to use specific tunnel flags like RTE_MBUF_F_TX_TUNNEL_GRE
* or RTE_MBUF_F_TX_TUNNEL_IPIP if possible.
* The ethdev must be configured with RTE_ETH_TX_OFFLOAD_IP_TNL_TSO.
* Outer and inner checksums are done according to the existing flags like
* RTE_MBUF_F_TX_xxx_CKSUM.
* Specific tunnel headers that contain payload length, sequence id
* or checksum are not expected to be updated.
*/
#define RTE_MBUF_F_TX_TUNNEL_IP (0xDULL << 45)
/**
* Generic UDP encapsulated tunnel type, used for TSO and checksum offload.
* UDP tunnel type implies outer IP layer.
* It can be used for tunnels which are not standards or listed above.
* It is preferred to use specific tunnel flags like RTE_MBUF_F_TX_TUNNEL_VXLAN
* if possible.
* The ethdev must be configured with RTE_ETH_TX_OFFLOAD_UDP_TNL_TSO.
* Outer and inner checksums are done according to the existing flags like
* RTE_MBUF_F_TX_xxx_CKSUM.
* Specific tunnel headers that contain payload length, sequence id
* or checksum are not expected to be updated.
*/
#define RTE_MBUF_F_TX_TUNNEL_UDP (0xEULL << 45)
/* add new TX TUNNEL type here */
#define RTE_MBUF_F_TX_TUNNEL_MASK (0xFULL << 45)
#define PKT_TX_TUNNEL_VXLAN RTE_DEPRECATED(PKT_TX_TUNNEL_VXLAN) \
RTE_MBUF_F_TX_TUNNEL_VXLAN
#define PKT_TX_TUNNEL_GRE RTE_DEPRECATED(PKT_TX_TUNNEL_GRE) \
RTE_MBUF_F_TX_TUNNEL_GRE
#define PKT_TX_TUNNEL_IPIP RTE_DEPRECATED(PKT_TX_TUNNEL_IPIP) \
RTE_MBUF_F_TX_TUNNEL_IPIP
#define PKT_TX_TUNNEL_GENEVE RTE_DEPRECATED(PKT_TX_TUNNEL_GENEVE) \
RTE_MBUF_F_TX_TUNNEL_GENEVE
#define PKT_TX_TUNNEL_MPLSINUDP RTE_DEPRECATED(PKT_TX_TUNNEL_MPLSINUDP) \
RTE_MBUF_F_TX_TUNNEL_MPLSINUDP
#define PKT_TX_TUNNEL_VXLAN_GPE RTE_DEPRECATED(PKT_TX_TUNNEL_VXLAN_GPE) \
RTE_MBUF_F_TX_TUNNEL_VXLAN_GPE
#define PKT_TX_TUNNEL_GTP RTE_DEPRECATED(PKT_TX_TUNNEL_GTP) \
RTE_MBUF_F_TX_TUNNEL_GTP
#define PKT_TX_TUNNEL_IP RTE_DEPRECATED(PKT_TX_TUNNEL_IP) \
RTE_MBUF_F_TX_TUNNEL_IP
#define PKT_TX_TUNNEL_UDP RTE_DEPRECATED(PKT_TX_TUNNEL_UDP) \
RTE_MBUF_F_TX_TUNNEL_UDP
#define PKT_TX_TUNNEL_MASK RTE_DEPRECATED(PKT_TX_TUNNEL_MASK) \
RTE_MBUF_F_TX_TUNNEL_MASK
/**
* Double VLAN insertion (QinQ) request to driver, driver may offload the
* insertion based on device capability.
* mbuf 'vlan_tci' & 'vlan_tci_outer' must be valid when this flag is set.
*/
#define RTE_MBUF_F_TX_QINQ (1ULL << 49)
#define PKT_TX_QINQ RTE_DEPRECATED(PKT_TX_QINQ) RTE_MBUF_F_TX_QINQ
#define PKT_TX_QINQ_PKT RTE_DEPRECATED(PKT_TX_QINQ_PKT) RTE_MBUF_F_TX_QINQ
/**
* TCP segmentation offload. To enable this offload feature for a
* packet to be transmitted on hardware supporting TSO:
* - set the RTE_MBUF_F_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies
* RTE_MBUF_F_TX_TCP_CKSUM)
* - set the flag RTE_MBUF_F_TX_IPV4 or RTE_MBUF_F_TX_IPV6
* - if it's IPv4, set the RTE_MBUF_F_TX_IP_CKSUM flag
* - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz
*/
#define RTE_MBUF_F_TX_TCP_SEG (1ULL << 50)
#define PKT_TX_TCP_SEG RTE_DEPRECATED(PKT_TX_TCP_SEG) RTE_MBUF_F_TX_TCP_SEG
/** TX IEEE1588 packet to timestamp. */
#define RTE_MBUF_F_TX_IEEE1588_TMST (1ULL << 51)
#define PKT_TX_IEEE1588_TMST RTE_DEPRECATED(PKT_TX_IEEE1588_TMST) \
RTE_MBUF_F_TX_IEEE1588_TMST
/*
* Bits 52+53 used for L4 packet type with checksum enabled: 00: Reserved,
* 01: TCP checksum, 10: SCTP checksum, 11: UDP checksum. To use hardware
* L4 checksum offload, the user needs to:
* - fill l2_len and l3_len in mbuf
* - set the flags RTE_MBUF_F_TX_TCP_CKSUM, RTE_MBUF_F_TX_SCTP_CKSUM or
* RTE_MBUF_F_TX_UDP_CKSUM
* - set the flag RTE_MBUF_F_TX_IPV4 or RTE_MBUF_F_TX_IPV6
*/
/** Disable L4 cksum of TX pkt. */
#define RTE_MBUF_F_TX_L4_NO_CKSUM (0ULL << 52)
/** TCP cksum of TX pkt. computed by NIC. */
#define RTE_MBUF_F_TX_TCP_CKSUM (1ULL << 52)
/** SCTP cksum of TX pkt. computed by NIC. */
#define RTE_MBUF_F_TX_SCTP_CKSUM (2ULL << 52)
/** UDP cksum of TX pkt. computed by NIC. */
#define RTE_MBUF_F_TX_UDP_CKSUM (3ULL << 52)
/** Mask for L4 cksum offload request. */
#define RTE_MBUF_F_TX_L4_MASK (3ULL << 52)
#define PKT_TX_L4_NO_CKSUM RTE_DEPRECATED(PKT_TX_L4_NO_CKSUM) \
RTE_MBUF_F_TX_L4_NO_CKSUM
#define PKT_TX_TCP_CKSUM RTE_DEPRECATED(PKT_TX_TCP_CKSUM) \
RTE_MBUF_F_TX_TCP_CKSUM
#define PKT_TX_SCTP_CKSUM RTE_DEPRECATED(PKT_TX_SCTP_CKSUM) \
RTE_MBUF_F_TX_SCTP_CKSUM
#define PKT_TX_UDP_CKSUM RTE_DEPRECATED(PKT_TX_UDP_CKSUM) \
RTE_MBUF_F_TX_UDP_CKSUM
#define PKT_TX_L4_MASK RTE_DEPRECATED(PKT_TX_L4_MASK) RTE_MBUF_F_TX_L4_MASK
/**
* Offload the IP checksum in the hardware. The flag RTE_MBUF_F_TX_IPV4 should
* also be set by the application, although a PMD will only check
* RTE_MBUF_F_TX_IP_CKSUM.
* - fill the mbuf offload information: l2_len, l3_len
*/
#define RTE_MBUF_F_TX_IP_CKSUM (1ULL << 54)
#define PKT_TX_IP_CKSUM RTE_DEPRECATED(PKT_TX_IP_CKSUM) RTE_MBUF_F_TX_IP_CKSUM
/**
* Packet is IPv4. This flag must be set when using any offload feature
* (TSO, L3 or L4 checksum) to tell the NIC that the packet is an IPv4
* packet. If the packet is a tunneled packet, this flag is related to
* the inner headers.
*/
#define RTE_MBUF_F_TX_IPV4 (1ULL << 55)
#define PKT_TX_IPV4 RTE_DEPRECATED(PKT_TX_IPV4) RTE_MBUF_F_TX_IPV4
/**
* Packet is IPv6. This flag must be set when using an offload feature
* (TSO or L4 checksum) to tell the NIC that the packet is an IPv6
* packet. If the packet is a tunneled packet, this flag is related to
* the inner headers.
*/
#define RTE_MBUF_F_TX_IPV6 (1ULL << 56)
#define PKT_TX_IPV6 RTE_DEPRECATED(PKT_TX_IPV6) RTE_MBUF_F_TX_IPV6
/**
* VLAN tag insertion request to driver, driver may offload the insertion
* based on the device capability.
* mbuf 'vlan_tci' field must be valid when this flag is set.
*/
#define RTE_MBUF_F_TX_VLAN (1ULL << 57)
#define PKT_TX_VLAN RTE_DEPRECATED(PKT_TX_VLAN) RTE_MBUF_F_TX_VLAN
#define PKT_TX_VLAN_PKT RTE_DEPRECATED(PKT_TX_VLAN_PKT) RTE_MBUF_F_TX_VLAN
/**
* Offload the IP checksum of an external header in the hardware. The
* flag RTE_MBUF_F_TX_OUTER_IPV4 should also be set by the application, although
* a PMD will only check RTE_MBUF_F_TX_OUTER_IP_CKSUM.
* - fill the mbuf offload information: outer_l2_len, outer_l3_len
*/
#define RTE_MBUF_F_TX_OUTER_IP_CKSUM (1ULL << 58)
#define PKT_TX_OUTER_IP_CKSUM RTE_DEPRECATED(PKT_TX_OUTER_IP_CKSUM) \
RTE_MBUF_F_TX_OUTER_IP_CKSUM
/**
* Packet outer header is IPv4. This flag must be set when using any
* outer offload feature (L3 or L4 checksum) to tell the NIC that the
* outer header of the tunneled packet is an IPv4 packet.
*/
#define RTE_MBUF_F_TX_OUTER_IPV4 (1ULL << 59)
#define PKT_TX_OUTER_IPV4 RTE_DEPRECATED(PKT_TX_OUTER_IPV4) \
RTE_MBUF_F_TX_OUTER_IPV4
/**
* Packet outer header is IPv6. This flag must be set when using any
* outer offload feature (L4 checksum) to tell the NIC that the outer
* header of the tunneled packet is an IPv6 packet.
*/
#define RTE_MBUF_F_TX_OUTER_IPV6 (1ULL << 60)
#define PKT_TX_OUTER_IPV6 RTE_DEPRECATED(PKT_TX_OUTER_IPV6) \
RTE_MBUF_F_TX_OUTER_IPV6
/**
* Bitmask of all supported packet Tx offload features flags,
* which can be set for packet.
*/
#define RTE_MBUF_F_TX_OFFLOAD_MASK ( \
RTE_MBUF_F_TX_OUTER_IPV6 | \
RTE_MBUF_F_TX_OUTER_IPV4 | \
RTE_MBUF_F_TX_OUTER_IP_CKSUM | \
RTE_MBUF_F_TX_VLAN | \
RTE_MBUF_F_TX_IPV6 | \
RTE_MBUF_F_TX_IPV4 | \
RTE_MBUF_F_TX_IP_CKSUM | \
RTE_MBUF_F_TX_L4_MASK | \
RTE_MBUF_F_TX_IEEE1588_TMST | \
RTE_MBUF_F_TX_TCP_SEG | \
RTE_MBUF_F_TX_QINQ | \
RTE_MBUF_F_TX_TUNNEL_MASK | \
RTE_MBUF_F_TX_MACSEC | \
RTE_MBUF_F_TX_SEC_OFFLOAD | \
RTE_MBUF_F_TX_UDP_SEG | \
RTE_MBUF_F_TX_OUTER_UDP_CKSUM)
#define PKT_TX_OFFLOAD_MASK RTE_DEPRECATED(PKT_TX_OFFLOAD_MASK) RTE_MBUF_F_TX_OFFLOAD_MASK
/**
* Mbuf having an external buffer attached. shinfo in mbuf must be filled.
*/
#define RTE_MBUF_F_EXTERNAL (1ULL << 61)
#define EXT_ATTACHED_MBUF RTE_DEPRECATED(EXT_ATTACHED_MBUF) RTE_MBUF_F_EXTERNAL
#define RTE_MBUF_F_INDIRECT (1ULL << 62) /**< Indirect attached mbuf */
#define IND_ATTACHED_MBUF RTE_DEPRECATED(IND_ATTACHED_MBUF) RTE_MBUF_F_INDIRECT
/** Alignment constraint of mbuf private area. */
#define RTE_MBUF_PRIV_ALIGN 8
/**
* Some NICs need at least 2KB buffer to RX standard Ethernet frame without
* splitting it into multiple segments.
* So, for mbufs that planned to be involved into RX/TX, the recommended
* minimal buffer length is 2KB + RTE_PKTMBUF_HEADROOM.
*/
#define RTE_MBUF_DEFAULT_DATAROOM 2048
#define RTE_MBUF_DEFAULT_BUF_SIZE \
(RTE_MBUF_DEFAULT_DATAROOM + RTE_PKTMBUF_HEADROOM)
struct rte_mbuf_sched {
uint32_t queue_id; /**< Queue ID. */
uint8_t traffic_class;
/**< Traffic class ID. Traffic class 0
* is the highest priority traffic class.
*/
uint8_t color;
/**< Color. @see enum rte_color.*/
uint16_t reserved; /**< Reserved. */
}; /**< Hierarchical scheduler */
/**
* enum for the tx_offload bit-fields lengths and offsets.
* defines the layout of rte_mbuf tx_offload field.
*/
enum {
RTE_MBUF_L2_LEN_BITS = 7,
RTE_MBUF_L3_LEN_BITS = 9,
RTE_MBUF_L4_LEN_BITS = 8,
RTE_MBUF_TSO_SEGSZ_BITS = 16,
RTE_MBUF_OUTL3_LEN_BITS = 9,
RTE_MBUF_OUTL2_LEN_BITS = 7,
RTE_MBUF_TXOFLD_UNUSED_BITS = sizeof(uint64_t) * CHAR_BIT -
RTE_MBUF_L2_LEN_BITS -
RTE_MBUF_L3_LEN_BITS -
RTE_MBUF_L4_LEN_BITS -
RTE_MBUF_TSO_SEGSZ_BITS -
RTE_MBUF_OUTL3_LEN_BITS -
RTE_MBUF_OUTL2_LEN_BITS,
#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
RTE_MBUF_L2_LEN_OFS =
sizeof(uint64_t) * CHAR_BIT - RTE_MBUF_L2_LEN_BITS,
RTE_MBUF_L3_LEN_OFS = RTE_MBUF_L2_LEN_OFS - RTE_MBUF_L3_LEN_BITS,
RTE_MBUF_L4_LEN_OFS = RTE_MBUF_L3_LEN_OFS - RTE_MBUF_L4_LEN_BITS,
RTE_MBUF_TSO_SEGSZ_OFS = RTE_MBUF_L4_LEN_OFS - RTE_MBUF_TSO_SEGSZ_BITS,
RTE_MBUF_OUTL3_LEN_OFS =
RTE_MBUF_TSO_SEGSZ_OFS - RTE_MBUF_OUTL3_LEN_BITS,
RTE_MBUF_OUTL2_LEN_OFS =
RTE_MBUF_OUTL3_LEN_OFS - RTE_MBUF_OUTL2_LEN_BITS,
RTE_MBUF_TXOFLD_UNUSED_OFS =
RTE_MBUF_OUTL2_LEN_OFS - RTE_MBUF_TXOFLD_UNUSED_BITS,
#else
RTE_MBUF_L2_LEN_OFS = 0,
RTE_MBUF_L3_LEN_OFS = RTE_MBUF_L2_LEN_OFS + RTE_MBUF_L2_LEN_BITS,
RTE_MBUF_L4_LEN_OFS = RTE_MBUF_L3_LEN_OFS + RTE_MBUF_L3_LEN_BITS,
RTE_MBUF_TSO_SEGSZ_OFS = RTE_MBUF_L4_LEN_OFS + RTE_MBUF_L4_LEN_BITS,
RTE_MBUF_OUTL3_LEN_OFS =
RTE_MBUF_TSO_SEGSZ_OFS + RTE_MBUF_TSO_SEGSZ_BITS,
RTE_MBUF_OUTL2_LEN_OFS =
RTE_MBUF_OUTL3_LEN_OFS + RTE_MBUF_OUTL3_LEN_BITS,
RTE_MBUF_TXOFLD_UNUSED_OFS =
RTE_MBUF_OUTL2_LEN_OFS + RTE_MBUF_OUTL2_LEN_BITS,
#endif
};
/**
* The generic rte_mbuf, containing a packet mbuf.
*/
struct rte_mbuf {
RTE_MARKER cacheline0;
void *buf_addr; /**< Virtual address of segment buffer. */
/**
* Physical address of segment buffer.
* Force alignment to 8-bytes, so as to ensure we have the exact
* same mbuf cacheline0 layout for 32-bit and 64-bit. This makes
* working on vector drivers easier.
*/
rte_iova_t buf_iova __rte_aligned(sizeof(rte_iova_t));
/* next 8 bytes are initialised on RX descriptor rearm */
RTE_MARKER64 rearm_data;
uint16_t data_off;
/**
* 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.
*/
uint16_t refcnt;
/**
* Number of segments. Only valid for the first segment of an mbuf
* chain.
*/
uint16_t nb_segs;
/** Input port (16 bits to support more than 256 virtual ports).
* The event eth Tx adapter uses this field to specify the output port.
*/
uint16_t port;
uint64_t ol_flags; /**< Offload features. */
/* remaining bytes are set on RX when pulling packet from descriptor */
RTE_MARKER rx_descriptor_fields1;
/*
* The packet type, which is the combination of outer/inner L2, L3, L4
* and tunnel types. The packet_type is about data really present in the
* mbuf. Example: if vlan stripping is enabled, a received vlan packet
* would have RTE_PTYPE_L2_ETHER and not RTE_PTYPE_L2_VLAN because the
* vlan is stripped from the data.
*/
RTE_STD_C11
union {
uint32_t packet_type; /**< L2/L3/L4 and tunnel information. */
__extension__
struct {
uint8_t l2_type:4; /**< (Outer) L2 type. */
uint8_t l3_type:4; /**< (Outer) L3 type. */
uint8_t l4_type:4; /**< (Outer) L4 type. */
uint8_t tun_type:4; /**< Tunnel type. */
RTE_STD_C11
union {
uint8_t inner_esp_next_proto;
/**< ESP next protocol type, valid if
* RTE_PTYPE_TUNNEL_ESP tunnel type is set
* on both Tx and Rx.
*/
__extension__
struct {
uint8_t inner_l2_type:4;
/**< Inner L2 type. */
uint8_t inner_l3_type:4;
/**< Inner L3 type. */
};
};
uint8_t inner_l4_type:4; /**< Inner L4 type. */
};
};
uint32_t pkt_len; /**< Total pkt len: sum of all segments. */
uint16_t data_len; /**< Amount of data in segment buffer. */
/** VLAN TCI (CPU order), valid if RTE_MBUF_F_RX_VLAN is set. */
uint16_t vlan_tci;
RTE_STD_C11
union {
union {
uint32_t rss; /**< RSS hash result if RSS enabled */
struct {
union {
struct {
uint16_t hash;
uint16_t id;
};
uint32_t lo;
/**< Second 4 flexible bytes */
};
uint32_t hi;
/**< First 4 flexible bytes or FD ID, dependent
* on RTE_MBUF_F_RX_FDIR_* flag in ol_flags.
*/
} fdir; /**< Filter identifier if FDIR enabled */
struct rte_mbuf_sched sched;
/**< Hierarchical scheduler : 8 bytes */
struct {
uint32_t reserved1;
uint16_t reserved2;
uint16_t txq;
/**< The event eth Tx adapter uses this field
* to store Tx queue id.
* @see rte_event_eth_tx_adapter_txq_set()
*/
} txadapter; /**< Eventdev ethdev Tx adapter */
/**< User defined tags. See rte_distributor_process() */
uint32_t usr;
} hash; /**< hash information */
};
/** Outer VLAN TCI (CPU order), valid if RTE_MBUF_F_RX_QINQ is set. */
uint16_t vlan_tci_outer;
uint16_t buf_len; /**< Length of segment buffer. */
struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */
/* second cache line - fields only used in slow path or on TX */
RTE_MARKER cacheline1 __rte_cache_min_aligned;
/**
* Next segment of scattered packet. Must be NULL in the last segment or
* in case of non-segmented packet.
*/
struct rte_mbuf *next;
/* fields to support TX offloads */
RTE_STD_C11
union {
uint64_t tx_offload; /**< combined for easy fetch */
__extension__
struct {
uint64_t l2_len:RTE_MBUF_L2_LEN_BITS;
/**< L2 (MAC) Header Length for non-tunneling pkt.
* Outer_L4_len + ... + Inner_L2_len for tunneling pkt.
*/
uint64_t l3_len:RTE_MBUF_L3_LEN_BITS;
/**< L3 (IP) Header Length. */
uint64_t l4_len:RTE_MBUF_L4_LEN_BITS;
/**< L4 (TCP/UDP) Header Length. */
uint64_t tso_segsz:RTE_MBUF_TSO_SEGSZ_BITS;
/**< TCP TSO segment size */
/*
* Fields for Tx offloading of tunnels.
* These are undefined for packets which don't request
* any tunnel offloads (outer IP or UDP checksum,
* tunnel TSO).
*
* PMDs should not use these fields unconditionally
* when calculating offsets.
*
* Applications are expected to set appropriate tunnel
* offload flags when they fill in these fields.
*/
uint64_t outer_l3_len:RTE_MBUF_OUTL3_LEN_BITS;
/**< Outer L3 (IP) Hdr Length. */
uint64_t outer_l2_len:RTE_MBUF_OUTL2_LEN_BITS;
/**< Outer L2 (MAC) Hdr Length. */
/* uint64_t unused:RTE_MBUF_TXOFLD_UNUSED_BITS; */
};
};
/** Shared data for external buffer attached to mbuf. See
* rte_pktmbuf_attach_extbuf().
*/
struct rte_mbuf_ext_shared_info *shinfo;
/** Size of the application private data. In case of an indirect
* mbuf, it stores the direct mbuf private data size.
*/
uint16_t priv_size;
/** Timesync flags for use with IEEE1588. */
uint16_t timesync;
uint32_t dynfield1[9]; /**< Reserved for dynamic fields. */
} __rte_cache_aligned;
/**
* Function typedef of callback to free externally attached buffer.
*/
typedef void (*rte_mbuf_extbuf_free_callback_t)(void *addr, void *opaque);
/**
* Shared data at the end of an external buffer.
*/
struct rte_mbuf_ext_shared_info {
rte_mbuf_extbuf_free_callback_t free_cb; /**< Free callback function */
void *fcb_opaque; /**< Free callback argument */
uint16_t refcnt;
};
/** Maximum number of nb_segs allowed. */
#define RTE_MBUF_MAX_NB_SEGS UINT16_MAX
/**
* Returns TRUE if given mbuf is cloned by mbuf indirection, or FALSE
* otherwise.
*
* If a mbuf has its data in another mbuf and references it by mbuf
* indirection, this mbuf can be defined as a cloned mbuf.
*/
#define RTE_MBUF_CLONED(mb) ((mb)->ol_flags & RTE_MBUF_F_INDIRECT)
/**
* Returns TRUE if given mbuf has an external buffer, or FALSE otherwise.
*
* External buffer is a user-provided anonymous buffer.
*/
#define RTE_MBUF_HAS_EXTBUF(mb) ((mb)->ol_flags & RTE_MBUF_F_EXTERNAL)
/**
* Returns TRUE if given mbuf is direct, or FALSE otherwise.
*
* If a mbuf embeds its own data after the rte_mbuf structure, this mbuf
* can be defined as a direct mbuf.
*/
#define RTE_MBUF_DIRECT(mb) \
(!((mb)->ol_flags & (RTE_MBUF_F_INDIRECT | RTE_MBUF_F_EXTERNAL)))
/** Uninitialized or unspecified port. */
#define RTE_MBUF_PORT_INVALID UINT16_MAX
/** For backwards compatibility. */
#define MBUF_INVALID_PORT RTE_MBUF_PORT_INVALID
/**
* A macro that points to an offset into the data in the mbuf.
*
* The returned pointer is cast to type t. Before using this
* function, the user must ensure that the first segment is large
* enough to accommodate its data.
*
* @param m
* The packet mbuf.
* @param o
* The offset into the mbuf data.
* @param t
* The type to cast the result into.
*/
#define rte_pktmbuf_mtod_offset(m, t, o) \
((t)(void *)((char *)(m)->buf_addr + (m)->data_off + (o)))
/**
* A macro that points to the start of the data in the mbuf.
*
* The returned pointer is cast to type t. Before using this
* function, the user must ensure that the first segment is large
* enough to accommodate its data.
*
* @param m
* The packet mbuf.
* @param t
* The type to cast the result into.
*/
#define rte_pktmbuf_mtod(m, t) rte_pktmbuf_mtod_offset(m, t, 0)
/**
* A macro that returns the IO address that points to an offset of the
* start of the data in the mbuf
*
* @param m
* The packet mbuf.
* @param o
* The offset into the data to calculate address from.
*/
#define rte_pktmbuf_iova_offset(m, o) \
(rte_iova_t)((m)->buf_iova + (m)->data_off + (o))
/**
* A macro that returns the IO address that points to the start of the
* data in the mbuf
*
* @param m
* The packet mbuf.
*/
#define rte_pktmbuf_iova(m) rte_pktmbuf_iova_offset(m, 0)
#ifdef __cplusplus
}
#endif
#endif /* _RTE_MBUF_CORE_H_ */
Reference in New Issue View Git Blame Copy Permalink