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numam-dpdk/drivers/net/txgbe/txgbe_rxtx.h
Jiawen Wu f8aadb64df net/txgbe: add copyright owner 
All rights reserved by Beijing Wangxun Technology Co., Ltd.
Part of the code references Intel.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-04-29 17:01:06 +02:00

428 lines
17 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2015-2020 Beijing WangXun Technology Co., Ltd.
* Copyright(c) 2010-2017 Intel Corporation
*/
#ifndef _TXGBE_RXTX_H_
#define _TXGBE_RXTX_H_
/*****************************************************************************
* Receive Descriptor
*****************************************************************************/
struct txgbe_rx_desc {
struct {
union {
__le32 dw0;
struct {
__le16 pkt;
__le16 hdr;
} lo;
};
union {
__le32 dw1;
struct {
__le16 ipid;
__le16 csum;
} hi;
};
} qw0; /* also as r.pkt_addr */
struct {
union {
__le32 dw2;
struct {
__le32 status;
} lo;
};
union {
__le32 dw3;
struct {
__le16 len;
__le16 tag;
} hi;
};
} qw1; /* also as r.hdr_addr */
};
/* @txgbe_rx_desc.qw0 */
#define TXGBE_RXD_PKTADDR(rxd, v) \
(((volatile __le64 *)(rxd))[0] = cpu_to_le64(v))
/* @txgbe_rx_desc.qw1 */
#define TXGBE_RXD_HDRADDR(rxd, v) \
(((volatile __le64 *)(rxd))[1] = cpu_to_le64(v))
/* @txgbe_rx_desc.dw0 */
#define TXGBE_RXD_RSSTYPE(dw) RS(dw, 0, 0xF)
#define TXGBE_RSSTYPE_NONE 0
#define TXGBE_RSSTYPE_IPV4TCP 1
#define TXGBE_RSSTYPE_IPV4 2
#define TXGBE_RSSTYPE_IPV6TCP 3
#define TXGBE_RSSTYPE_IPV4SCTP 4
#define TXGBE_RSSTYPE_IPV6 5
#define TXGBE_RSSTYPE_IPV6SCTP 6
#define TXGBE_RSSTYPE_IPV4UDP 7
#define TXGBE_RSSTYPE_IPV6UDP 8
#define TXGBE_RSSTYPE_FDIR 15
#define TXGBE_RXD_SECTYPE(dw) RS(dw, 4, 0x3)
#define TXGBE_RXD_SECTYPE_NONE LS(0, 4, 0x3)
#define TXGBE_RXD_SECTYPE_LINKSEC LS(1, 4, 0x3)
#define TXGBE_RXD_SECTYPE_IPSECESP LS(2, 4, 0x3)
#define TXGBE_RXD_SECTYPE_IPSECAH LS(3, 4, 0x3)
#define TXGBE_RXD_TPIDSEL(dw) RS(dw, 6, 0x7)
#define TXGBE_RXD_PTID(dw) RS(dw, 9, 0xFF)
#define TXGBE_RXD_RSCCNT(dw) RS(dw, 17, 0xF)
#define TXGBE_RXD_HDRLEN(dw) RS(dw, 21, 0x3FF)
#define TXGBE_RXD_SPH MS(31, 0x1)
/* @txgbe_rx_desc.dw1 */
/** bit 0-31, as rss hash when **/
#define TXGBE_RXD_RSSHASH(rxd) ((rxd)->qw0.dw1)
/** bit 0-31, as ip csum when **/
#define TXGBE_RXD_IPID(rxd) ((rxd)->qw0.hi.ipid)
#define TXGBE_RXD_CSUM(rxd) ((rxd)->qw0.hi.csum)
/** bit 0-31, as fdir id when **/
#define TXGBE_RXD_FDIRID(rxd) ((rxd)->qw0.hi.dw1)
/* @txgbe_rx_desc.dw2 */
#define TXGBE_RXD_STATUS(rxd) ((rxd)->qw1.lo.status)
/** bit 0-1 **/
#define TXGBE_RXD_STAT_DD MS(0, 0x1) /* Descriptor Done */
#define TXGBE_RXD_STAT_EOP MS(1, 0x1) /* End of Packet */
/** bit 2-31, when EOP=0 **/
#define TXGBE_RXD_NEXTP_RESV(v) LS(v, 2, 0x3)
#define TXGBE_RXD_NEXTP(dw) RS(dw, 4, 0xFFFF) /* Next Descriptor */
/** bit 2-31, when EOP=1 **/
#define TXGBE_RXD_PKT_CLS_MASK MS(2, 0x7) /* Packet Class */
#define TXGBE_RXD_PKT_CLS_TC_RSS LS(0, 2, 0x7) /* RSS Hash */
#define TXGBE_RXD_PKT_CLS_FLM LS(1, 2, 0x7) /* FDir Match */
#define TXGBE_RXD_PKT_CLS_SYN LS(2, 2, 0x7) /* TCP Sync */
#define TXGBE_RXD_PKT_CLS_5TUPLE LS(3, 2, 0x7) /* 5 Tuple */
#define TXGBE_RXD_PKT_CLS_ETF LS(4, 2, 0x7) /* Ethertype Filter */
#define TXGBE_RXD_STAT_VLAN MS(5, 0x1) /* IEEE VLAN Packet */
#define TXGBE_RXD_STAT_UDPCS MS(6, 0x1) /* UDP xsum calculated */
#define TXGBE_RXD_STAT_L4CS MS(7, 0x1) /* L4 xsum calculated */
#define TXGBE_RXD_STAT_IPCS MS(8, 0x1) /* IP xsum calculated */
#define TXGBE_RXD_STAT_PIF MS(9, 0x1) /* Non-unicast address */
#define TXGBE_RXD_STAT_EIPCS MS(10, 0x1) /* Encap IP xsum calculated */
#define TXGBE_RXD_STAT_VEXT MS(11, 0x1) /* Multi-VLAN */
#define TXGBE_RXD_STAT_IPV6EX MS(12, 0x1) /* IPv6 with option header */
#define TXGBE_RXD_STAT_LLINT MS(13, 0x1) /* Pkt caused LLI */
#define TXGBE_RXD_STAT_1588 MS(14, 0x1) /* IEEE1588 Time Stamp */
#define TXGBE_RXD_STAT_SECP MS(15, 0x1) /* Security Processing */
#define TXGBE_RXD_STAT_LB MS(16, 0x1) /* Loopback Status */
/*** bit 17-30, when PTYPE=IP ***/
#define TXGBE_RXD_STAT_BMC MS(17, 0x1) /* PTYPE=IP, BMC status */
#define TXGBE_RXD_ERR_FDIR_LEN MS(20, 0x1) /* FDIR Length error */
#define TXGBE_RXD_ERR_FDIR_DROP MS(21, 0x1) /* FDIR Drop error */
#define TXGBE_RXD_ERR_FDIR_COLL MS(22, 0x1) /* FDIR Collision error */
#define TXGBE_RXD_ERR_HBO MS(23, 0x1) /* Header Buffer Overflow */
#define TXGBE_RXD_ERR_EIPCS MS(26, 0x1) /* Encap IP header error */
#define TXGBE_RXD_ERR_SECERR MS(27, 0x1) /* macsec or ipsec error */
#define TXGBE_RXD_ERR_RXE MS(29, 0x1) /* Any MAC Error */
#define TXGBE_RXD_ERR_L4CS MS(30, 0x1) /* TCP/UDP xsum error */
#define TXGBE_RXD_ERR_IPCS MS(31, 0x1) /* IP xsum error */
#define TXGBE_RXD_ERR_CSUM(dw) RS(dw, 30, 0x3)
/*** bit 17-30, when PTYPE=FCOE ***/
#define TXGBE_RXD_STAT_FCOEFS MS(17, 0x1) /* PTYPE=FCOE, FCoE EOF/SOF */
#define TXGBE_RXD_FCSTAT_MASK MS(18, 0x3) /* FCoE Pkt Stat */
#define TXGBE_RXD_FCSTAT_NOMTCH LS(0, 18, 0x3) /* No Ctxt Match */
#define TXGBE_RXD_FCSTAT_NODDP LS(1, 18, 0x3) /* Ctxt w/o DDP */
#define TXGBE_RXD_FCSTAT_FCPRSP LS(2, 18, 0x3) /* Recv. FCP_RSP */
#define TXGBE_RXD_FCSTAT_DDP LS(3, 18, 0x3) /* Ctxt w/ DDP */
#define TXGBE_RXD_FCERR_MASK MS(20, 0x7) /* FCERR */
#define TXGBE_RXD_FCERR_0 LS(0, 20, 0x7)
#define TXGBE_RXD_FCERR_1 LS(1, 20, 0x7)
#define TXGBE_RXD_FCERR_2 LS(2, 20, 0x7)
#define TXGBE_RXD_FCERR_3 LS(3, 20, 0x7)
#define TXGBE_RXD_FCERR_4 LS(4, 20, 0x7)
#define TXGBE_RXD_FCERR_5 LS(5, 20, 0x7)
#define TXGBE_RXD_FCERR_6 LS(6, 20, 0x7)
#define TXGBE_RXD_FCERR_7 LS(7, 20, 0x7)
/* @txgbe_rx_desc.dw3 */
#define TXGBE_RXD_LENGTH(rxd) ((rxd)->qw1.hi.len)
#define TXGBE_RXD_VLAN(rxd) ((rxd)->qw1.hi.tag)
/*****************************************************************************
* Transmit Descriptor
*****************************************************************************/
/**
* Transmit Context Descriptor (TXGBE_TXD_TYP=CTXT)
**/
struct txgbe_tx_ctx_desc {
__le32 dw0; /* w.vlan_macip_lens */
__le32 dw1; /* w.seqnum_seed */
__le32 dw2; /* w.type_tucmd_mlhl */
__le32 dw3; /* w.mss_l4len_idx */
};
/* @txgbe_tx_ctx_desc.dw0 */
#define TXGBE_TXD_IPLEN(v) LS(v, 0, 0x1FF) /* ip/fcoe header end */
#define TXGBE_TXD_MACLEN(v) LS(v, 9, 0x7F) /* desc mac len */
#define TXGBE_TXD_VLAN(v) LS(v, 16, 0xFFFF) /* vlan tag */
/* @txgbe_tx_ctx_desc.dw1 */
/*** bit 0-31, when TXGBE_TXD_DTYP_FCOE=0 ***/
#define TXGBE_TXD_IPSEC_SAIDX(v) LS(v, 0, 0x3FF) /* ipsec SA index */
#define TXGBE_TXD_ETYPE(v) LS(v, 11, 0x1) /* tunnel type */
#define TXGBE_TXD_ETYPE_UDP LS(0, 11, 0x1)
#define TXGBE_TXD_ETYPE_GRE LS(1, 11, 0x1)
#define TXGBE_TXD_EIPLEN(v) LS(v, 12, 0x7F) /* tunnel ip header */
#define TXGBE_TXD_DTYP_FCOE MS(16, 0x1) /* FCoE/IP descriptor */
#define TXGBE_TXD_ETUNLEN(v) LS(v, 21, 0xFF) /* tunnel header */
#define TXGBE_TXD_DECTTL(v) LS(v, 29, 0xF) /* decrease ip TTL */
/*** bit 0-31, when TXGBE_TXD_DTYP_FCOE=1 ***/
#define TXGBE_TXD_FCOEF_EOF_MASK MS(10, 0x3) /* FC EOF index */
#define TXGBE_TXD_FCOEF_EOF_N LS(0, 10, 0x3) /* EOFn */
#define TXGBE_TXD_FCOEF_EOF_T LS(1, 10, 0x3) /* EOFt */
#define TXGBE_TXD_FCOEF_EOF_NI LS(2, 10, 0x3) /* EOFni */
#define TXGBE_TXD_FCOEF_EOF_A LS(3, 10, 0x3) /* EOFa */
#define TXGBE_TXD_FCOEF_SOF MS(12, 0x1) /* FC SOF index */
#define TXGBE_TXD_FCOEF_PARINC MS(13, 0x1) /* Rel_Off in F_CTL */
#define TXGBE_TXD_FCOEF_ORIE MS(14, 0x1) /* orientation end */
#define TXGBE_TXD_FCOEF_ORIS MS(15, 0x1) /* orientation start */
/* @txgbe_tx_ctx_desc.dw2 */
#define TXGBE_TXD_IPSEC_ESPLEN(v) LS(v, 1, 0x1FF) /* ipsec ESP length */
#define TXGBE_TXD_SNAP MS(10, 0x1) /* SNAP indication */
#define TXGBE_TXD_TPID_SEL(v) LS(v, 11, 0x7) /* vlan tag index */
#define TXGBE_TXD_IPSEC_ESP MS(14, 0x1) /* ipsec type: esp=1 ah=0 */
#define TXGBE_TXD_IPSEC_ESPENC MS(15, 0x1) /* ESP encrypt */
#define TXGBE_TXD_CTXT MS(20, 0x1) /* context descriptor */
#define TXGBE_TXD_PTID(v) LS(v, 24, 0xFF) /* packet type */
/* @txgbe_tx_ctx_desc.dw3 */
#define TXGBE_TXD_DD MS(0, 0x1) /* descriptor done */
#define TXGBE_TXD_IDX(v) LS(v, 4, 0x1) /* ctxt desc index */
#define TXGBE_TXD_L4LEN(v) LS(v, 8, 0xFF) /* l4 header length */
#define TXGBE_TXD_MSS(v) LS(v, 16, 0xFFFF) /* l4 MSS */
/**
* Transmit Data Descriptor (TXGBE_TXD_TYP=DATA)
**/
struct txgbe_tx_desc {
__le64 qw0; /* r.buffer_addr , w.reserved */
__le32 dw2; /* r.cmd_type_len, w.nxtseq_seed */
__le32 dw3; /* r.olinfo_status, w.status */
};
/* @txgbe_tx_desc.qw0 */
/* @txgbe_tx_desc.dw2 */
#define TXGBE_TXD_DATLEN(v) ((0xFFFF & (v))) /* data buffer length */
#define TXGBE_TXD_1588 ((0x1) << 19) /* IEEE1588 time stamp */
#define TXGBE_TXD_DATA ((0x0) << 20) /* data descriptor */
#define TXGBE_TXD_EOP ((0x1) << 24) /* End of Packet */
#define TXGBE_TXD_FCS ((0x1) << 25) /* Insert FCS */
#define TXGBE_TXD_LINKSEC ((0x1) << 26) /* Insert LinkSec */
#define TXGBE_TXD_ECU ((0x1) << 28) /* forward to ECU */
#define TXGBE_TXD_CNTAG ((0x1) << 29) /* insert CN tag */
#define TXGBE_TXD_VLE ((0x1) << 30) /* insert VLAN tag */
#define TXGBE_TXD_TSE ((0x1) << 31) /* transmit segmentation */
#define TXGBE_TXD_FLAGS (TXGBE_TXD_FCS | TXGBE_TXD_EOP)
/* @txgbe_tx_desc.dw3 */
#define TXGBE_TXD_DD_UNUSED TXGBE_TXD_DD
#define TXGBE_TXD_IDX_UNUSED(v) TXGBE_TXD_IDX(v)
#define TXGBE_TXD_CC ((0x1) << 7) /* check context */
#define TXGBE_TXD_IPSEC ((0x1) << 8) /* request ipsec offload */
#define TXGBE_TXD_L4CS ((0x1) << 9) /* insert TCP/UDP/SCTP csum */
#define TXGBE_TXD_IPCS ((0x1) << 10) /* insert IPv4 csum */
#define TXGBE_TXD_EIPCS ((0x1) << 11) /* insert outer IP csum */
#define TXGBE_TXD_MNGFLT ((0x1) << 12) /* enable management filter */
#define TXGBE_TXD_PAYLEN(v) ((0x7FFFF & (v)) << 13) /* payload length */
#define RTE_PMD_TXGBE_TX_MAX_BURST 32
#define RTE_PMD_TXGBE_RX_MAX_BURST 32
#define RTE_TXGBE_TX_MAX_FREE_BUF_SZ 64
#define RX_RING_SZ ((TXGBE_RING_DESC_MAX + RTE_PMD_TXGBE_RX_MAX_BURST) * \
sizeof(struct txgbe_rx_desc))
#define rte_packet_prefetch(p) rte_prefetch1(p)
#define RTE_TXGBE_REGISTER_POLL_WAIT_10_MS 10
#define RTE_TXGBE_WAIT_100_US 100
#define TXGBE_TX_MAX_SEG 40
/**
* Structure associated with each descriptor of the RX ring of a RX queue.
*/
struct txgbe_rx_entry {
struct rte_mbuf *mbuf; /**< mbuf associated with RX descriptor. */
};
struct txgbe_scattered_rx_entry {
struct rte_mbuf *fbuf; /**< First segment of the fragmented packet. */
};
/**
* Structure associated with each descriptor of the TX ring of a TX queue.
*/
struct txgbe_tx_entry {
struct rte_mbuf *mbuf; /**< mbuf associated with TX desc, if any. */
uint16_t next_id; /**< Index of next descriptor in ring. */
uint16_t last_id; /**< Index of last scattered descriptor. */
};
/**
* Structure associated with each descriptor of the TX ring of a TX queue.
*/
struct txgbe_tx_entry_v {
struct rte_mbuf *mbuf; /**< mbuf associated with TX desc, if any. */
};
/**
* Structure associated with each RX queue.
*/
struct txgbe_rx_queue {
struct rte_mempool *mb_pool; /**< mbuf pool to populate RX ring. */
volatile struct txgbe_rx_desc *rx_ring; /**< RX ring virtual address. */
uint64_t rx_ring_phys_addr; /**< RX ring DMA address. */
volatile uint32_t *rdt_reg_addr; /**< RDT register address. */
volatile uint32_t *rdh_reg_addr; /**< RDH register address. */
struct txgbe_rx_entry *sw_ring; /**< address of RX software ring. */
/**< address of scattered Rx software ring. */
struct txgbe_scattered_rx_entry *sw_sc_ring;
struct rte_mbuf *pkt_first_seg; /**< First segment of current packet. */
struct rte_mbuf *pkt_last_seg; /**< Last segment of current packet. */
uint16_t nb_rx_desc; /**< number of RX descriptors. */
uint16_t rx_tail; /**< current value of RDT register. */
uint16_t nb_rx_hold; /**< number of held free RX desc. */
uint16_t rx_nb_avail; /**< nr of staged pkts ready to ret to app */
uint16_t rx_next_avail; /**< idx of next staged pkt to ret to app */
uint16_t rx_free_trigger; /**< triggers rx buffer allocation */
#ifdef RTE_LIB_SECURITY
uint8_t using_ipsec;
/**< indicates that IPsec RX feature is in use */
#endif
uint16_t rx_free_thresh; /**< max free RX desc to hold. */
uint16_t queue_id; /**< RX queue index. */
uint16_t reg_idx; /**< RX queue register index. */
/**< Packet type mask for different NICs. */
uint16_t pkt_type_mask;
uint16_t port_id; /**< Device port identifier. */
uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */
uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
uint8_t rx_deferred_start; /**< not in global dev start. */
/** flags to set in mbuf when a vlan is detected. */
uint64_t vlan_flags;
uint64_t offloads; /**< Rx offloads with DEV_RX_OFFLOAD_* */
/** need to alloc dummy mbuf, for wraparound when scanning hw ring */
struct rte_mbuf fake_mbuf;
/** hold packets to return to application */
struct rte_mbuf *rx_stage[RTE_PMD_TXGBE_RX_MAX_BURST * 2];
};
/**
* TXGBE CTX Constants
*/
enum txgbe_ctx_num {
TXGBE_CTX_0 = 0, /**< CTX0 */
TXGBE_CTX_1 = 1, /**< CTX1 */
TXGBE_CTX_NUM = 2, /**< CTX NUMBER */
};
/** Offload features */
union txgbe_tx_offload {
uint64_t data[2];
struct {
uint64_t ptid:8; /**< Packet Type Identifier. */
uint64_t l2_len:7; /**< L2 (MAC) Header Length. */
uint64_t l3_len:9; /**< L3 (IP) Header Length. */
uint64_t l4_len:8; /**< L4 (TCP/UDP) Header Length. */
uint64_t tso_segsz:16; /**< TCP TSO segment size */
uint64_t vlan_tci:16;
/**< VLAN Tag Control Identifier (CPU order). */
/* fields for TX offloading of tunnels */
uint64_t outer_tun_len:8; /**< Outer TUN (Tunnel) Hdr Length. */
uint64_t outer_l2_len:8; /**< Outer L2 (MAC) Hdr Length. */
uint64_t outer_l3_len:16; /**< Outer L3 (IP) Hdr Length. */
#ifdef RTE_LIB_SECURITY
/* inline ipsec related*/
uint64_t sa_idx:8; /**< TX SA database entry index */
uint64_t sec_pad_len:4; /**< padding length */
#endif
};
};
/**
* Structure to check if new context need be built
*/
struct txgbe_ctx_info {
uint64_t flags; /**< ol_flags for context build. */
/**< tx offload: vlan, tso, l2-l3-l4 lengths. */
union txgbe_tx_offload tx_offload;
/** compare mask for tx offload. */
union txgbe_tx_offload tx_offload_mask;
};
/**
* Structure associated with each TX queue.
*/
struct txgbe_tx_queue {
/** TX ring virtual address. */
volatile struct txgbe_tx_desc *tx_ring;
uint64_t tx_ring_phys_addr; /**< TX ring DMA address. */
union {
/**< address of SW ring for scalar PMD. */
struct txgbe_tx_entry *sw_ring;
/**< address of SW ring for vector PMD */
struct txgbe_tx_entry_v *sw_ring_v;
};
volatile uint32_t *tdt_reg_addr; /**< Address of TDT register. */
volatile uint32_t *tdc_reg_addr; /**< Address of TDC register. */
uint16_t nb_tx_desc; /**< number of TX descriptors. */
uint16_t tx_tail; /**< current value of TDT reg. */
/**< Start freeing TX buffers if there are less free descriptors than
* this value.
*/
uint16_t tx_free_thresh;
/** Index to last TX descriptor to have been cleaned. */
uint16_t last_desc_cleaned;
/** Total number of TX descriptors ready to be allocated. */
uint16_t nb_tx_free;
uint16_t tx_next_dd; /**< next desc to scan for DD bit */
uint16_t queue_id; /**< TX queue index. */
uint16_t reg_idx; /**< TX queue register index. */
uint16_t port_id; /**< Device port identifier. */
uint8_t pthresh; /**< Prefetch threshold register. */
uint8_t hthresh; /**< Host threshold register. */
uint8_t wthresh; /**< Write-back threshold reg. */
uint64_t offloads; /* Tx offload flags of DEV_TX_OFFLOAD_* */
uint32_t ctx_curr; /**< Hardware context states. */
/** Hardware context0 history. */
struct txgbe_ctx_info ctx_cache[TXGBE_CTX_NUM];
const struct txgbe_txq_ops *ops; /**< txq ops */
uint8_t tx_deferred_start; /**< not in global dev start. */
#ifdef RTE_LIB_SECURITY
uint8_t using_ipsec;
/**< indicates that IPsec TX feature is in use */
#endif
};
struct txgbe_txq_ops {
void (*release_mbufs)(struct txgbe_tx_queue *txq);
void (*free_swring)(struct txgbe_tx_queue *txq);
void (*reset)(struct txgbe_tx_queue *txq);
};
/* Takes an ethdev and a queue and sets up the tx function to be used based on
* the queue parameters. Used in tx_queue_setup by primary process and then
* in dev_init by secondary process when attaching to an existing ethdev.
*/
void txgbe_set_tx_function(struct rte_eth_dev *dev, struct txgbe_tx_queue *txq);
void txgbe_set_rx_function(struct rte_eth_dev *dev);
int txgbe_dev_tx_done_cleanup(void *tx_queue, uint32_t free_cnt);
uint64_t txgbe_get_tx_port_offloads(struct rte_eth_dev *dev);
uint64_t txgbe_get_rx_queue_offloads(struct rte_eth_dev *dev);
uint64_t txgbe_get_rx_port_offloads(struct rte_eth_dev *dev);
uint64_t txgbe_get_tx_queue_offloads(struct rte_eth_dev *dev);
#endif /* _TXGBE_RXTX_H_ */
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