From: Konstantin Ananyev Date: Fri, 27 Sep 2019 13:50:53 +0000 (+0100) Subject: mbuf: move definitions into a separate file X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3eb860b08eb794471b84a46d2c7f147957e66c04;p=dpdk.git mbuf: move definitions into a separate file Right now inclusion of rte_mbuf.h header can cause inclusion of some arch/os specific headers. That prevents it to be included directly by some non-DPDK (but related) entities: KNI, BPF programs, etc. To overcome that problem usually a separate definitions of rte_mbuf structure is created within these entities. That aproach has a lot of drawbacks: code duplication, error prone, etc. This patch moves rte_mbuf structure definition (and some related macros) into a separate file that can be included by both rte_mbuf.h and other non-DPDK entities. Note that it doesn't introduce any change for current DPDK code. Signed-off-by: Konstantin Ananyev Acked-by: Andrew Rybchenko Acked-by: Michel Machado Acked-by: Olivier Matz --- diff --git a/lib/librte_mbuf/Makefile b/lib/librte_mbuf/Makefile index c8f6d26895..f3b76ad23f 100644 --- a/lib/librte_mbuf/Makefile +++ b/lib/librte_mbuf/Makefile @@ -19,6 +19,9 @@ LIBABIVER := 5 SRCS-$(CONFIG_RTE_LIBRTE_MBUF) := rte_mbuf.c rte_mbuf_ptype.c rte_mbuf_pool_ops.c # install includes -SYMLINK-$(CONFIG_RTE_LIBRTE_MBUF)-include := rte_mbuf.h rte_mbuf_ptype.h rte_mbuf_pool_ops.h +SYMLINK-$(CONFIG_RTE_LIBRTE_MBUF)-include := rte_mbuf.h +SYMLINK-$(CONFIG_RTE_LIBRTE_MBUF)-include += rte_mbuf_core.h +SYMLINK-$(CONFIG_RTE_LIBRTE_MBUF)-include += rte_mbuf_ptype.h +SYMLINK-$(CONFIG_RTE_LIBRTE_MBUF)-include += rte_mbuf_pool_ops.h include $(RTE_SDK)/mk/rte.lib.mk diff --git a/lib/librte_mbuf/meson.build b/lib/librte_mbuf/meson.build index 6cc11ebb40..36bb6eb9d3 100644 --- a/lib/librte_mbuf/meson.build +++ b/lib/librte_mbuf/meson.build @@ -3,7 +3,8 @@ version = 5 sources = files('rte_mbuf.c', 'rte_mbuf_ptype.c', 'rte_mbuf_pool_ops.c') -headers = files('rte_mbuf.h', 'rte_mbuf_ptype.h', 'rte_mbuf_pool_ops.h') +headers = files('rte_mbuf.h', 'rte_mbuf_core.h', + 'rte_mbuf_ptype.h', 'rte_mbuf_pool_ops.h') deps += ['mempool'] allow_experimental_apis = true diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index db24cd0c4a..bd26764a25 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -42,369 +42,12 @@ #include #include #include +#include #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 PKT_RX_VLAN_STRIPPED is also present, the VLAN - * header has been stripped from mbuf data, else it is still - * present. - */ -#define PKT_RX_VLAN (1ULL << 0) - -#define PKT_RX_RSS_HASH (1ULL << 1) /**< RX packet with RSS hash result. */ -#define PKT_RX_FDIR (1ULL << 2) /**< RX packet with FDIR match indicate. */ - -/** - * Deprecated. - * Checking this flag alone is deprecated: check the 2 bits of - * PKT_RX_L4_CKSUM_MASK. - * This flag was set when the L4 checksum of a packet was detected as - * wrong by the hardware. - */ -#define PKT_RX_L4_CKSUM_BAD (1ULL << 3) - -/** - * Deprecated. - * Checking this flag alone is deprecated: check the 2 bits of - * PKT_RX_IP_CKSUM_MASK. - * This flag was set when the IP checksum of a packet was detected as - * wrong by the hardware. - */ -#define PKT_RX_IP_CKSUM_BAD (1ULL << 4) - -#define PKT_RX_EIP_CKSUM_BAD (1ULL << 5) /**< External IP header checksum error. */ - -/** - * 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 PKT_RX_VLAN_STRIPPED is set, PKT_RX_VLAN must also be set. - */ -#define PKT_RX_VLAN_STRIPPED (1ULL << 6) - -/** - * Mask of bits used to determine the status of RX IP checksum. - * - PKT_RX_IP_CKSUM_UNKNOWN: no information about the RX IP checksum - * - PKT_RX_IP_CKSUM_BAD: the IP checksum in the packet is wrong - * - PKT_RX_IP_CKSUM_GOOD: the IP checksum in the packet is valid - * - PKT_RX_IP_CKSUM_NONE: the IP checksum is not correct in the packet - * data, but the integrity of the IP header is verified. - */ -#define PKT_RX_IP_CKSUM_MASK ((1ULL << 4) | (1ULL << 7)) - -#define PKT_RX_IP_CKSUM_UNKNOWN 0 -#define PKT_RX_IP_CKSUM_BAD (1ULL << 4) -#define PKT_RX_IP_CKSUM_GOOD (1ULL << 7) -#define PKT_RX_IP_CKSUM_NONE ((1ULL << 4) | (1ULL << 7)) - -/** - * Mask of bits used to determine the status of RX L4 checksum. - * - PKT_RX_L4_CKSUM_UNKNOWN: no information about the RX L4 checksum - * - PKT_RX_L4_CKSUM_BAD: the L4 checksum in the packet is wrong - * - PKT_RX_L4_CKSUM_GOOD: the L4 checksum in the packet is valid - * - PKT_RX_L4_CKSUM_NONE: the L4 checksum is not correct in the packet - * data, but the integrity of the L4 data is verified. - */ -#define PKT_RX_L4_CKSUM_MASK ((1ULL << 3) | (1ULL << 8)) - -#define PKT_RX_L4_CKSUM_UNKNOWN 0 -#define PKT_RX_L4_CKSUM_BAD (1ULL << 3) -#define PKT_RX_L4_CKSUM_GOOD (1ULL << 8) -#define PKT_RX_L4_CKSUM_NONE ((1ULL << 3) | (1ULL << 8)) - -#define PKT_RX_IEEE1588_PTP (1ULL << 9) /**< RX IEEE1588 L2 Ethernet PT Packet. */ -#define PKT_RX_IEEE1588_TMST (1ULL << 10) /**< RX IEEE1588 L2/L4 timestamped packet.*/ -#define PKT_RX_FDIR_ID (1ULL << 13) /**< FD id reported if FDIR match. */ -#define PKT_RX_FDIR_FLX (1ULL << 14) /**< Flexible bytes reported if FDIR match. */ - -/** - * The 2 vlans have been stripped by the hardware and their tci are - * saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). - * This can only happen if vlan stripping is enabled in the RX - * configuration of the PMD. - * When PKT_RX_QINQ_STRIPPED is set, the flags (PKT_RX_VLAN | - * PKT_RX_VLAN_STRIPPED | PKT_RX_QINQ) must also be set. - */ -#define PKT_RX_QINQ_STRIPPED (1ULL << 15) - -/** - * 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 PKT_RX_LRO (1ULL << 16) - -/** - * Indicate that the timestamp field in the mbuf is valid. - */ -#define PKT_RX_TIMESTAMP (1ULL << 17) - -/** - * Indicate that security offload processing was applied on the RX packet. - */ -#define PKT_RX_SEC_OFFLOAD (1ULL << 18) - -/** - * Indicate that security offload processing failed on the RX packet. - */ -#define PKT_RX_SEC_OFFLOAD_FAILED (1ULL << 19) - -/** - * The RX packet is a double VLAN, and the outer tci has been - * saved in in mbuf->vlan_tci_outer. If PKT_RX_QINQ set, PKT_RX_VLAN - * also should be set and inner tci should be saved to mbuf->vlan_tci. - * If the flag PKT_RX_QINQ_STRIPPED is also present, both VLANs - * headers have been stripped from mbuf data, else they are still - * present. - */ -#define PKT_RX_QINQ (1ULL << 20) - -/** - * Mask of bits used to determine the status of outer RX L4 checksum. - * - PKT_RX_OUTER_L4_CKSUM_UNKNOWN: no info about the outer RX L4 checksum - * - PKT_RX_OUTER_L4_CKSUM_BAD: the outer L4 checksum in the packet is wrong - * - PKT_RX_OUTER_L4_CKSUM_GOOD: the outer L4 checksum in the packet is valid - * - PKT_RX_OUTER_L4_CKSUM_INVALID: invalid outer L4 checksum state. - * - * The detection of PKT_RX_OUTER_L4_CKSUM_GOOD shall be based on the given - * HW capability, At minimum, the PMD should support - * PKT_RX_OUTER_L4_CKSUM_UNKNOWN and PKT_RX_OUTER_L4_CKSUM_BAD states - * if the DEV_RX_OFFLOAD_OUTER_UDP_CKSUM offload is available. - */ -#define PKT_RX_OUTER_L4_CKSUM_MASK ((1ULL << 21) | (1ULL << 22)) - -#define PKT_RX_OUTER_L4_CKSUM_UNKNOWN 0 -#define PKT_RX_OUTER_L4_CKSUM_BAD (1ULL << 21) -#define PKT_RX_OUTER_L4_CKSUM_GOOD (1ULL << 22) -#define PKT_RX_OUTER_L4_CKSUM_INVALID ((1ULL << 21) | (1ULL << 22)) - -/* add new RX flags here */ - -/* add new TX flags here */ - -/** - * Indicate that the metadata field in the mbuf is in use. - */ -#define PKT_TX_METADATA (1ULL << 40) - -/** - * 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 PKT_TX_OUTER_UDP_CKSUM flag. - * c) Set the PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6 flag. - * 2) Configure DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flag. - */ -#define PKT_TX_OUTER_UDP_CKSUM (1ULL << 41) - -/** - * 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 PKT_TX_UDP_SEG (1ULL << 42) - -/** - * Request security offload processing on the TX packet. - */ -#define PKT_TX_SEC_OFFLOAD (1ULL << 43) - -/** - * Offload the MACsec. This flag must be set by the application to enable - * this offload feature for a packet to be transmitted. - */ -#define PKT_TX_MACSEC (1ULL << 44) - -/** - * 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 PKT_TX_TCP_SEG for TSO, or PKT_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 PKT_TX_TUNNEL_VXLAN (0x1ULL << 45) -#define PKT_TX_TUNNEL_GRE (0x2ULL << 45) -#define PKT_TX_TUNNEL_IPIP (0x3ULL << 45) -#define PKT_TX_TUNNEL_GENEVE (0x4ULL << 45) -/** TX packet with MPLS-in-UDP RFC 7510 header. */ -#define PKT_TX_TUNNEL_MPLSINUDP (0x5ULL << 45) -#define PKT_TX_TUNNEL_VXLAN_GPE (0x6ULL << 45) -#define PKT_TX_TUNNEL_GTP (0x7ULL << 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 PKT_TX_TUNNEL_GRE - * or PKT_TX_TUNNEL_IPIP if possible. - * The ethdev must be configured with DEV_TX_OFFLOAD_IP_TNL_TSO. - * Outer and inner checksums are done according to the existing flags like - * PKT_TX_xxx_CKSUM. - * Specific tunnel headers that contain payload length, sequence id - * or checksum are not expected to be updated. - */ -#define PKT_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 PKT_TX_TUNNEL_VXLAN - * if possible. - * The ethdev must be configured with DEV_TX_OFFLOAD_UDP_TNL_TSO. - * Outer and inner checksums are done according to the existing flags like - * PKT_TX_xxx_CKSUM. - * Specific tunnel headers that contain payload length, sequence id - * or checksum are not expected to be updated. - */ -#define PKT_TX_TUNNEL_UDP (0xEULL << 45) -/* add new TX TUNNEL type here */ -#define PKT_TX_TUNNEL_MASK (0xFULL << 45) - -/** - * 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 PKT_TX_QINQ (1ULL << 49) -/* this old name is deprecated */ -#define PKT_TX_QINQ_PKT PKT_TX_QINQ - -/** - * TCP segmentation offload. To enable this offload feature for a - * packet to be transmitted on hardware supporting TSO: - * - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies - * PKT_TX_TCP_CKSUM) - * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6 - * - if it's IPv4, set the PKT_TX_IP_CKSUM flag - * - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz - */ -#define PKT_TX_TCP_SEG (1ULL << 50) - -#define PKT_TX_IEEE1588_TMST (1ULL << 51) /**< TX IEEE1588 packet to timestamp. */ - -/** - * 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 PKT_TX_TCP_CKSUM, PKT_TX_SCTP_CKSUM or PKT_TX_UDP_CKSUM - * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6 - */ -#define PKT_TX_L4_NO_CKSUM (0ULL << 52) /**< Disable L4 cksum of TX pkt. */ -#define PKT_TX_TCP_CKSUM (1ULL << 52) /**< TCP cksum of TX pkt. computed by NIC. */ -#define PKT_TX_SCTP_CKSUM (2ULL << 52) /**< SCTP cksum of TX pkt. computed by NIC. */ -#define PKT_TX_UDP_CKSUM (3ULL << 52) /**< UDP cksum of TX pkt. computed by NIC. */ -#define PKT_TX_L4_MASK (3ULL << 52) /**< Mask for L4 cksum offload request. */ - -/** - * Offload the IP checksum in the hardware. The flag PKT_TX_IPV4 should - * also be set by the application, although a PMD will only check - * PKT_TX_IP_CKSUM. - * - fill the mbuf offload information: l2_len, l3_len - */ -#define PKT_TX_IP_CKSUM (1ULL << 54) - -/** - * 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 PKT_TX_IPV4 (1ULL << 55) - -/** - * 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 PKT_TX_IPV6 (1ULL << 56) - -/** - * 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 PKT_TX_VLAN (1ULL << 57) -/* this old name is deprecated */ -#define PKT_TX_VLAN_PKT PKT_TX_VLAN - -/** - * Offload the IP checksum of an external header in the hardware. The - * flag PKT_TX_OUTER_IPV4 should also be set by the application, although - * a PMD will only check PKT_TX_OUTER_IP_CKSUM. - * - fill the mbuf offload information: outer_l2_len, outer_l3_len - */ -#define PKT_TX_OUTER_IP_CKSUM (1ULL << 58) - -/** - * 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 PKT_TX_OUTER_IPV4 (1ULL << 59) - -/** - * 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 PKT_TX_OUTER_IPV6 (1ULL << 60) - -/** - * Bitmask of all supported packet Tx offload features flags, - * which can be set for packet. - */ -#define PKT_TX_OFFLOAD_MASK ( \ - PKT_TX_OUTER_IPV6 | \ - PKT_TX_OUTER_IPV4 | \ - PKT_TX_OUTER_IP_CKSUM | \ - PKT_TX_VLAN_PKT | \ - PKT_TX_IPV6 | \ - PKT_TX_IPV4 | \ - PKT_TX_IP_CKSUM | \ - PKT_TX_L4_MASK | \ - PKT_TX_IEEE1588_TMST | \ - PKT_TX_TCP_SEG | \ - PKT_TX_QINQ_PKT | \ - PKT_TX_TUNNEL_MASK | \ - PKT_TX_MACSEC | \ - PKT_TX_SEC_OFFLOAD | \ - PKT_TX_UDP_SEG | \ - PKT_TX_OUTER_UDP_CKSUM | \ - PKT_TX_METADATA) - -/** - * Mbuf having an external buffer attached. shinfo in mbuf must be filled. - */ -#define EXT_ATTACHED_MBUF (1ULL << 61) - -#define IND_ATTACHED_MBUF (1ULL << 62) /**< Indirect attached mbuf */ - -/** Alignment constraint of mbuf private area. */ -#define RTE_MBUF_PRIV_ALIGN 8 - /** * Get the name of a RX offload flag * @@ -455,310 +98,6 @@ const char *rte_get_tx_ol_flag_name(uint64_t mask); */ int rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen); -/** - * 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) - -/* define a set of marker types that can be used to refer to set points in the - * mbuf */ -__extension__ -typedef void *MARKER[0]; /**< generic marker for a point in a structure */ -__extension__ -typedef uint8_t MARKER8[0]; /**< generic marker with 1B alignment */ -__extension__ -typedef uint64_t MARKER64[0]; /**< marker that allows us to overwrite 8 bytes - * with a single assignment */ - -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 { - 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_STD_C11 - union { - rte_iova_t buf_iova; - rte_iova_t buf_physaddr; /**< deprecated */ - } __rte_aligned(sizeof(rte_iova_t)); - - /* next 8 bytes are initialised on RX descriptor rearm */ - 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 CONFIG_RTE_MBUF_REFCNT_ATOMIC - * config option. - */ - RTE_STD_C11 - union { - rte_atomic16_t refcnt_atomic; /**< Atomically accessed refcnt */ - uint16_t refcnt; /**< Non-atomically accessed refcnt */ - }; - uint16_t nb_segs; /**< Number of segments. */ - - /** 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 */ - 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. */ - struct { - uint32_t l2_type:4; /**< (Outer) L2 type. */ - uint32_t l3_type:4; /**< (Outer) L3 type. */ - uint32_t l4_type:4; /**< (Outer) L4 type. */ - uint32_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. */ - }; - }; - uint32_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 PKT_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 PKT_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 */ - struct { - /** - * Application specific metadata value - * for egress flow rule match. - * Valid if PKT_TX_METADATA is set. - * Located here to allow conjunct use - * with hash.sched.hi. - */ - uint32_t tx_metadata; - uint32_t reserved; - }; - }; - - /** Outer VLAN TCI (CPU order), valid if PKT_RX_QINQ is set. */ - uint16_t vlan_tci_outer; - - uint16_t buf_len; /**< Length of segment buffer. */ - - /** Valid if PKT_RX_TIMESTAMP is set. The unit and time reference - * are not normalized but are always the same for a given port. - * Some devices allow to query rte_eth_read_clock that will return the - * current device timestamp. - */ - uint64_t timestamp; - - /* second cache line - fields only used in slow path or on TX */ - MARKER cacheline1 __rte_cache_min_aligned; - - RTE_STD_C11 - union { - void *userdata; /**< Can be used for external metadata */ - uint64_t udata64; /**< Allow 8-byte userdata on 32-bit */ - }; - - struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */ - struct rte_mbuf *next; /**< Next segment of scattered packet. */ - - /* 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; */ - }; - }; - - /** 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; - - /** Sequence number. See also rte_reorder_insert(). */ - uint32_t seqn; - - /** Shared data for external buffer attached to mbuf. See - * rte_pktmbuf_attach_extbuf(). - */ - struct rte_mbuf_ext_shared_info *shinfo; - -} __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 */ - rte_atomic16_t refcnt_atomic; /**< Atomically accessed refcnt */ -}; - -/**< Maximum number of nb_segs allowed. */ -#define RTE_MBUF_MAX_NB_SEGS UINT16_MAX - /** * Prefetch the first part of the mbuf * @@ -955,31 +294,6 @@ rte_mbuf_to_priv(struct rte_mbuf *m) return RTE_PTR_ADD(m, sizeof(struct rte_mbuf)); } -/** - * 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 & IND_ATTACHED_MBUF) - -/** - * 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 & EXT_ATTACHED_MBUF) - -/** - * 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 & (IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF))) - /** * Private data in case of pktmbuf pool. * @@ -2042,62 +1356,10 @@ static inline struct rte_mbuf *rte_pktmbuf_lastseg(struct rte_mbuf *m) return m; } -/** - * 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)((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)) - /* deprecated */ #define rte_pktmbuf_mtophys_offset(m, o) \ rte_pktmbuf_iova_offset(m, 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) - /* deprecated */ #define rte_pktmbuf_mtophys(m) rte_pktmbuf_iova(m) diff --git a/lib/librte_mbuf/rte_mbuf_core.h b/lib/librte_mbuf/rte_mbuf_core.h new file mode 100644 index 0000000000..3398c12c84 --- /dev/null +++ b/lib/librte_mbuf/rte_mbuf_core.h @@ -0,0 +1,794 @@ +/* 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 instead. + */ + +#include +#include +#include + +#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 PKT_RX_VLAN_STRIPPED is also present, the VLAN + * header has been stripped from mbuf data, else it is still + * present. + */ +#define PKT_RX_VLAN (1ULL << 0) + +/** RX packet with RSS hash result. */ +#define PKT_RX_RSS_HASH (1ULL << 1) + + /** RX packet with FDIR match indicate. */ +#define PKT_RX_FDIR (1ULL << 2) + +/** + * Deprecated. + * Checking this flag alone is deprecated: check the 2 bits of + * PKT_RX_L4_CKSUM_MASK. + * This flag was set when the L4 checksum of a packet was detected as + * wrong by the hardware. + */ +#define PKT_RX_L4_CKSUM_BAD (1ULL << 3) + +/** + * Deprecated. + * Checking this flag alone is deprecated: check the 2 bits of + * PKT_RX_IP_CKSUM_MASK. + * This flag was set when the IP checksum of a packet was detected as + * wrong by the hardware. + */ +#define PKT_RX_IP_CKSUM_BAD (1ULL << 4) + + /** External IP header checksum error. */ +#define PKT_RX_EIP_CKSUM_BAD (1ULL << 5) + +/** + * 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 PKT_RX_VLAN_STRIPPED is set, PKT_RX_VLAN must also be set. + */ +#define PKT_RX_VLAN_STRIPPED (1ULL << 6) + +/** + * Mask of bits used to determine the status of RX IP checksum. + * - PKT_RX_IP_CKSUM_UNKNOWN: no information about the RX IP checksum + * - PKT_RX_IP_CKSUM_BAD: the IP checksum in the packet is wrong + * - PKT_RX_IP_CKSUM_GOOD: the IP checksum in the packet is valid + * - PKT_RX_IP_CKSUM_NONE: the IP checksum is not correct in the packet + * data, but the integrity of the IP header is verified. + */ +#define PKT_RX_IP_CKSUM_MASK ((1ULL << 4) | (1ULL << 7)) + +#define PKT_RX_IP_CKSUM_UNKNOWN 0 +#define PKT_RX_IP_CKSUM_BAD (1ULL << 4) +#define PKT_RX_IP_CKSUM_GOOD (1ULL << 7) +#define PKT_RX_IP_CKSUM_NONE ((1ULL << 4) | (1ULL << 7)) + +/** + * Mask of bits used to determine the status of RX L4 checksum. + * - PKT_RX_L4_CKSUM_UNKNOWN: no information about the RX L4 checksum + * - PKT_RX_L4_CKSUM_BAD: the L4 checksum in the packet is wrong + * - PKT_RX_L4_CKSUM_GOOD: the L4 checksum in the packet is valid + * - PKT_RX_L4_CKSUM_NONE: the L4 checksum is not correct in the packet + * data, but the integrity of the L4 data is verified. + */ +#define PKT_RX_L4_CKSUM_MASK ((1ULL << 3) | (1ULL << 8)) + +#define PKT_RX_L4_CKSUM_UNKNOWN 0 +#define PKT_RX_L4_CKSUM_BAD (1ULL << 3) +#define PKT_RX_L4_CKSUM_GOOD (1ULL << 8) +#define PKT_RX_L4_CKSUM_NONE ((1ULL << 3) | (1ULL << 8)) + +/** RX IEEE1588 L2 Ethernet PT Packet. */ +#define PKT_RX_IEEE1588_PTP (1ULL << 9) + +/** RX IEEE1588 L2/L4 timestamped packet.*/ +#define PKT_RX_IEEE1588_TMST (1ULL << 10) + +/** FD id reported if FDIR match. */ +#define PKT_RX_FDIR_ID (1ULL << 13) + +/** Flexible bytes reported if FDIR match. */ +#define PKT_RX_FDIR_FLX (1ULL << 14) + +/** + * The 2 vlans have been stripped by the hardware and their tci are + * saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). + * This can only happen if vlan stripping is enabled in the RX + * configuration of the PMD. + * When PKT_RX_QINQ_STRIPPED is set, the flags (PKT_RX_VLAN | + * PKT_RX_VLAN_STRIPPED | PKT_RX_QINQ) must also be set. + */ +#define PKT_RX_QINQ_STRIPPED (1ULL << 15) + +/** + * 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 PKT_RX_LRO (1ULL << 16) + +/** + * Indicate that the timestamp field in the mbuf is valid. + */ +#define PKT_RX_TIMESTAMP (1ULL << 17) + +/** + * Indicate that security offload processing was applied on the RX packet. + */ +#define PKT_RX_SEC_OFFLOAD (1ULL << 18) + +/** + * Indicate that security offload processing failed on the RX packet. + */ +#define PKT_RX_SEC_OFFLOAD_FAILED (1ULL << 19) + +/** + * The RX packet is a double VLAN, and the outer tci has been + * saved in in mbuf->vlan_tci_outer. If PKT_RX_QINQ set, PKT_RX_VLAN + * also should be set and inner tci should be saved to mbuf->vlan_tci. + * If the flag PKT_RX_QINQ_STRIPPED is also present, both VLANs + * headers have been stripped from mbuf data, else they are still + * present. + */ +#define PKT_RX_QINQ (1ULL << 20) + +/** + * Mask of bits used to determine the status of outer RX L4 checksum. + * - PKT_RX_OUTER_L4_CKSUM_UNKNOWN: no info about the outer RX L4 checksum + * - PKT_RX_OUTER_L4_CKSUM_BAD: the outer L4 checksum in the packet is wrong + * - PKT_RX_OUTER_L4_CKSUM_GOOD: the outer L4 checksum in the packet is valid + * - PKT_RX_OUTER_L4_CKSUM_INVALID: invalid outer L4 checksum state. + * + * The detection of PKT_RX_OUTER_L4_CKSUM_GOOD shall be based on the given + * HW capability, At minimum, the PMD should support + * PKT_RX_OUTER_L4_CKSUM_UNKNOWN and PKT_RX_OUTER_L4_CKSUM_BAD states + * if the DEV_RX_OFFLOAD_OUTER_UDP_CKSUM offload is available. + */ +#define PKT_RX_OUTER_L4_CKSUM_MASK ((1ULL << 21) | (1ULL << 22)) + +#define PKT_RX_OUTER_L4_CKSUM_UNKNOWN 0 +#define PKT_RX_OUTER_L4_CKSUM_BAD (1ULL << 21) +#define PKT_RX_OUTER_L4_CKSUM_GOOD (1ULL << 22) +#define PKT_RX_OUTER_L4_CKSUM_INVALID ((1ULL << 21) | (1ULL << 22)) + +/* add new RX flags here */ + +/* add new TX flags here */ + +/** + * Indicate that the metadata field in the mbuf is in use. + */ +#define PKT_TX_METADATA (1ULL << 40) + +/** + * 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 PKT_TX_OUTER_UDP_CKSUM flag. + * c) Set the PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6 flag. + * 2) Configure DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flag. + */ +#define PKT_TX_OUTER_UDP_CKSUM (1ULL << 41) + +/** + * 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 PKT_TX_UDP_SEG (1ULL << 42) + +/** + * Request security offload processing on the TX packet. + */ +#define PKT_TX_SEC_OFFLOAD (1ULL << 43) + +/** + * Offload the MACsec. This flag must be set by the application to enable + * this offload feature for a packet to be transmitted. + */ +#define PKT_TX_MACSEC (1ULL << 44) + +/** + * 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 PKT_TX_TCP_SEG for TSO, or PKT_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 PKT_TX_TUNNEL_VXLAN (0x1ULL << 45) +#define PKT_TX_TUNNEL_GRE (0x2ULL << 45) +#define PKT_TX_TUNNEL_IPIP (0x3ULL << 45) +#define PKT_TX_TUNNEL_GENEVE (0x4ULL << 45) +/** TX packet with MPLS-in-UDP RFC 7510 header. */ +#define PKT_TX_TUNNEL_MPLSINUDP (0x5ULL << 45) +#define PKT_TX_TUNNEL_VXLAN_GPE (0x6ULL << 45) +#define PKT_TX_TUNNEL_GTP (0x7ULL << 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 PKT_TX_TUNNEL_GRE + * or PKT_TX_TUNNEL_IPIP if possible. + * The ethdev must be configured with DEV_TX_OFFLOAD_IP_TNL_TSO. + * Outer and inner checksums are done according to the existing flags like + * PKT_TX_xxx_CKSUM. + * Specific tunnel headers that contain payload length, sequence id + * or checksum are not expected to be updated. + */ +#define PKT_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 PKT_TX_TUNNEL_VXLAN + * if possible. + * The ethdev must be configured with DEV_TX_OFFLOAD_UDP_TNL_TSO. + * Outer and inner checksums are done according to the existing flags like + * PKT_TX_xxx_CKSUM. + * Specific tunnel headers that contain payload length, sequence id + * or checksum are not expected to be updated. + */ +#define PKT_TX_TUNNEL_UDP (0xEULL << 45) +/* add new TX TUNNEL type here */ +#define PKT_TX_TUNNEL_MASK (0xFULL << 45) + +/** + * 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 PKT_TX_QINQ (1ULL << 49) +/* this old name is deprecated */ +#define PKT_TX_QINQ_PKT PKT_TX_QINQ + +/** + * TCP segmentation offload. To enable this offload feature for a + * packet to be transmitted on hardware supporting TSO: + * - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies + * PKT_TX_TCP_CKSUM) + * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6 + * - if it's IPv4, set the PKT_TX_IP_CKSUM flag + * - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz + */ +#define PKT_TX_TCP_SEG (1ULL << 50) + +/** TX IEEE1588 packet to timestamp. */ +#define PKT_TX_IEEE1588_TMST (1ULL << 51) + +/** + * 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 PKT_TX_TCP_CKSUM, PKT_TX_SCTP_CKSUM or PKT_TX_UDP_CKSUM + * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6 + */ +#define PKT_TX_L4_NO_CKSUM (0ULL << 52) /**< Disable L4 cksum of TX pkt. */ + +/** TCP cksum of TX pkt. computed by NIC. */ +#define PKT_TX_TCP_CKSUM (1ULL << 52) + +/** SCTP cksum of TX pkt. computed by NIC. */ +#define PKT_TX_SCTP_CKSUM (2ULL << 52) + +/** UDP cksum of TX pkt. computed by NIC. */ +#define PKT_TX_UDP_CKSUM (3ULL << 52) + +/** Mask for L4 cksum offload request. */ +#define PKT_TX_L4_MASK (3ULL << 52) + +/** + * Offload the IP checksum in the hardware. The flag PKT_TX_IPV4 should + * also be set by the application, although a PMD will only check + * PKT_TX_IP_CKSUM. + * - fill the mbuf offload information: l2_len, l3_len + */ +#define PKT_TX_IP_CKSUM (1ULL << 54) + +/** + * 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 PKT_TX_IPV4 (1ULL << 55) + +/** + * 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 PKT_TX_IPV6 (1ULL << 56) + +/** + * 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 PKT_TX_VLAN (1ULL << 57) +/* this old name is deprecated */ +#define PKT_TX_VLAN_PKT PKT_TX_VLAN + +/** + * Offload the IP checksum of an external header in the hardware. The + * flag PKT_TX_OUTER_IPV4 should also be set by the application, although + * a PMD will only check PKT_TX_OUTER_IP_CKSUM. + * - fill the mbuf offload information: outer_l2_len, outer_l3_len + */ +#define PKT_TX_OUTER_IP_CKSUM (1ULL << 58) + +/** + * 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 PKT_TX_OUTER_IPV4 (1ULL << 59) + +/** + * 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 PKT_TX_OUTER_IPV6 (1ULL << 60) + +/** + * Bitmask of all supported packet Tx offload features flags, + * which can be set for packet. + */ +#define PKT_TX_OFFLOAD_MASK ( \ + PKT_TX_OUTER_IPV6 | \ + PKT_TX_OUTER_IPV4 | \ + PKT_TX_OUTER_IP_CKSUM | \ + PKT_TX_VLAN_PKT | \ + PKT_TX_IPV6 | \ + PKT_TX_IPV4 | \ + PKT_TX_IP_CKSUM | \ + PKT_TX_L4_MASK | \ + PKT_TX_IEEE1588_TMST | \ + PKT_TX_TCP_SEG | \ + PKT_TX_QINQ_PKT | \ + PKT_TX_TUNNEL_MASK | \ + PKT_TX_MACSEC | \ + PKT_TX_SEC_OFFLOAD | \ + PKT_TX_UDP_SEG | \ + PKT_TX_OUTER_UDP_CKSUM | \ + PKT_TX_METADATA) + +/** + * Mbuf having an external buffer attached. shinfo in mbuf must be filled. + */ +#define EXT_ATTACHED_MBUF (1ULL << 61) + +#define IND_ATTACHED_MBUF (1ULL << 62) /**< Indirect attached mbuf */ + +/** 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) + +/* + * define a set of marker types that can be used to refer to set points in the + * mbuf. + */ +__extension__ +typedef void *MARKER[0]; /**< generic marker for a point in a structure */ +__extension__ +typedef uint8_t MARKER8[0]; /**< generic marker with 1B alignment */ + + /** marker that allows us to overwrite 8 bytes with a single assignment */ +__extension__ +typedef uint64_t MARKER64[0]; + +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 { + 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_STD_C11 + union { + rte_iova_t buf_iova; + rte_iova_t buf_physaddr; /**< deprecated */ + } __rte_aligned(sizeof(rte_iova_t)); + + /* next 8 bytes are initialised on RX descriptor rearm */ + 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 CONFIG_RTE_MBUF_REFCNT_ATOMIC + * config option. + */ + RTE_STD_C11 + union { + rte_atomic16_t refcnt_atomic; /**< Atomically accessed refcnt */ + /** Non-atomically accessed refcnt */ + uint16_t refcnt; + }; + uint16_t nb_segs; /**< Number of segments. */ + + /** 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 */ + 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. */ + struct { + uint32_t l2_type:4; /**< (Outer) L2 type. */ + uint32_t l3_type:4; /**< (Outer) L3 type. */ + uint32_t l4_type:4; /**< (Outer) L4 type. */ + uint32_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. */ + }; + }; + uint32_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 PKT_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 PKT_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 */ + struct { + /** + * Application specific metadata value + * for egress flow rule match. + * Valid if PKT_TX_METADATA is set. + * Located here to allow conjunct use + * with hash.sched.hi. + */ + uint32_t tx_metadata; + uint32_t reserved; + }; + }; + + /** Outer VLAN TCI (CPU order), valid if PKT_RX_QINQ is set. */ + uint16_t vlan_tci_outer; + + uint16_t buf_len; /**< Length of segment buffer. */ + + /** Valid if PKT_RX_TIMESTAMP is set. The unit and time reference + * are not normalized but are always the same for a given port. + * Some devices allow to query rte_eth_read_clock that will return the + * current device timestamp. + */ + uint64_t timestamp; + + /* second cache line - fields only used in slow path or on TX */ + MARKER cacheline1 __rte_cache_min_aligned; + + RTE_STD_C11 + union { + void *userdata; /**< Can be used for external metadata */ + uint64_t udata64; /**< Allow 8-byte userdata on 32-bit */ + }; + + struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */ + struct rte_mbuf *next; /**< Next segment of scattered packet. */ + + /* 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; */ + }; + }; + + /** 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; + + /** Sequence number. See also rte_reorder_insert(). */ + uint32_t seqn; + + /** Shared data for external buffer attached to mbuf. See + * rte_pktmbuf_attach_extbuf(). + */ + struct rte_mbuf_ext_shared_info *shinfo; + +} __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 */ + rte_atomic16_t refcnt_atomic; /**< Atomically accessed 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 & IND_ATTACHED_MBUF) + +/** + * 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 & EXT_ATTACHED_MBUF) + +/** + * 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 & (IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF))) + +#define MBUF_INVALID_PORT UINT16_MAX + +/** + * 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)((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_ */