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numam-dpdk/drivers/net/ngbe/ngbe_rxtx.h
Jiawen Wu 59b46438fd net/ngbe: support VLAN offload and VLAN filter 
Support to set VLAN and QinQ offload, and filter of a VLAN tag
identifier.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
2021-10-30 00:53:19 +02:00

377 lines
15 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018-2021 Beijing WangXun Technology Co., Ltd.
* Copyright(c) 2010-2017 Intel Corporation
*/
#ifndef _NGBE_RXTX_H_
#define _NGBE_RXTX_H_
/*****************************************************************************
* Receive Descriptor
*****************************************************************************/
struct ngbe_rx_desc {
struct {
union {
rte_le32_t dw0;
struct {
rte_le16_t pkt;
rte_le16_t hdr;
} lo;
};
union {
rte_le32_t dw1;
struct {
rte_le16_t ipid;
rte_le16_t csum;
} hi;
};
} qw0; /* also as r.pkt_addr */
struct {
union {
rte_le32_t dw2;
struct {
rte_le32_t status;
} lo;
};
union {
rte_le32_t dw3;
struct {
rte_le16_t len;
rte_le16_t tag;
} hi;
};
} qw1; /* also as r.hdr_addr */
};
/* @ngbe_rx_desc.qw0 */
#define NGBE_RXD_PKTADDR(rxd, v) \
(((volatile __le64 *)(rxd))[0] = cpu_to_le64(v))
/* @ngbe_rx_desc.qw1 */
#define NGBE_RXD_HDRADDR(rxd, v) \
(((volatile __le64 *)(rxd))[1] = cpu_to_le64(v))
/* @ngbe_rx_desc.dw0 */
#define NGBE_RXD_RSSTYPE(dw) RS(dw, 0, 0xF)
#define NGBE_RSSTYPE_NONE 0
#define NGBE_RSSTYPE_IPV4TCP 1
#define NGBE_RSSTYPE_IPV4 2
#define NGBE_RSSTYPE_IPV6TCP 3
#define NGBE_RSSTYPE_IPV4SCTP 4
#define NGBE_RSSTYPE_IPV6 5
#define NGBE_RSSTYPE_IPV6SCTP 6
#define NGBE_RSSTYPE_IPV4UDP 7
#define NGBE_RSSTYPE_IPV6UDP 8
#define NGBE_RSSTYPE_FDIR 15
#define NGBE_RXD_SECTYPE(dw) RS(dw, 4, 0x3)
#define NGBE_RXD_SECTYPE_NONE LS(0, 4, 0x3)
#define NGBE_RXD_SECTYPE_IPSECESP LS(2, 4, 0x3)
#define NGBE_RXD_SECTYPE_IPSECAH LS(3, 4, 0x3)
#define NGBE_RXD_TPIDSEL(dw) RS(dw, 6, 0x7)
#define NGBE_RXD_PTID(dw) RS(dw, 9, 0xFF)
#define NGBE_RXD_RSCCNT(dw) RS(dw, 17, 0xF)
#define NGBE_RXD_HDRLEN(dw) RS(dw, 21, 0x3FF)
#define NGBE_RXD_SPH MS(31, 0x1)
/* @ngbe_rx_desc.dw1 */
/** bit 0-31, as rss hash when **/
#define NGBE_RXD_RSSHASH(rxd) ((rxd)->qw0.dw1)
/** bit 0-31, as ip csum when **/
#define NGBE_RXD_IPID(rxd) ((rxd)->qw0.hi.ipid)
#define NGBE_RXD_CSUM(rxd) ((rxd)->qw0.hi.csum)
/* @ngbe_rx_desc.dw2 */
#define NGBE_RXD_STATUS(rxd) ((rxd)->qw1.lo.status)
/** bit 0-1 **/
#define NGBE_RXD_STAT_DD MS(0, 0x1) /* Descriptor Done */
#define NGBE_RXD_STAT_EOP MS(1, 0x1) /* End of Packet */
/** bit 2-31, when EOP=0 **/
#define NGBE_RXD_NEXTP_RESV(v) LS(v, 2, 0x3)
#define NGBE_RXD_NEXTP(dw) RS(dw, 4, 0xFFFF) /* Next Descriptor */
/** bit 2-31, when EOP=1 **/
#define NGBE_RXD_PKT_CLS_MASK MS(2, 0x7) /* Packet Class */
#define NGBE_RXD_PKT_CLS_TC_RSS LS(0, 2, 0x7) /* RSS Hash */
#define NGBE_RXD_PKT_CLS_FLM LS(1, 2, 0x7) /* FDir Match */
#define NGBE_RXD_PKT_CLS_SYN LS(2, 2, 0x7) /* TCP Sync */
#define NGBE_RXD_PKT_CLS_5TUPLE LS(3, 2, 0x7) /* 5 Tuple */
#define NGBE_RXD_PKT_CLS_ETF LS(4, 2, 0x7) /* Ethertype Filter */
#define NGBE_RXD_STAT_VLAN MS(5, 0x1) /* IEEE VLAN Packet */
#define NGBE_RXD_STAT_UDPCS MS(6, 0x1) /* UDP xsum calculated */
#define NGBE_RXD_STAT_L4CS MS(7, 0x1) /* L4 xsum calculated */
#define NGBE_RXD_STAT_IPCS MS(8, 0x1) /* IP xsum calculated */
#define NGBE_RXD_STAT_PIF MS(9, 0x1) /* Non-unicast address */
#define NGBE_RXD_STAT_EIPCS MS(10, 0x1) /* Encap IP xsum calculated */
#define NGBE_RXD_STAT_VEXT MS(11, 0x1) /* Multi-VLAN */
#define NGBE_RXD_STAT_IPV6EX MS(12, 0x1) /* IPv6 with option header */
#define NGBE_RXD_STAT_LLINT MS(13, 0x1) /* Pkt caused LLI */
#define NGBE_RXD_STAT_1588 MS(14, 0x1) /* IEEE1588 Time Stamp */
#define NGBE_RXD_STAT_SECP MS(15, 0x1) /* Security Processing */
#define NGBE_RXD_STAT_LB MS(16, 0x1) /* Loopback Status */
/*** bit 17-30, when PTYPE=IP ***/
#define NGBE_RXD_STAT_BMC MS(17, 0x1) /* PTYPE=IP, BMC status */
#define NGBE_RXD_ERR_HBO MS(23, 0x1) /* Header Buffer Overflow */
#define NGBE_RXD_ERR_EIPCS MS(26, 0x1) /* Encap IP header error */
#define NGBE_RXD_ERR_SECERR MS(27, 0x1) /* macsec or ipsec error */
#define NGBE_RXD_ERR_RXE MS(29, 0x1) /* Any MAC Error */
#define NGBE_RXD_ERR_L4CS MS(30, 0x1) /* TCP/UDP xsum error */
#define NGBE_RXD_ERR_IPCS MS(31, 0x1) /* IP xsum error */
#define NGBE_RXD_ERR_CSUM(dw) RS(dw, 30, 0x3)
/* @ngbe_rx_desc.dw3 */
#define NGBE_RXD_LENGTH(rxd) ((rxd)->qw1.hi.len)
#define NGBE_RXD_VLAN(rxd) ((rxd)->qw1.hi.tag)
/*****************************************************************************
* Transmit Descriptor
*****************************************************************************/
/**
* Transmit Context Descriptor (NGBE_TXD_TYP=CTXT)
**/
struct ngbe_tx_ctx_desc {
rte_le32_t dw0; /* w.vlan_macip_lens */
rte_le32_t dw1; /* w.seqnum_seed */
rte_le32_t dw2; /* w.type_tucmd_mlhl */
rte_le32_t dw3; /* w.mss_l4len_idx */
};
/* @ngbe_tx_ctx_desc.dw0 */
#define NGBE_TXD_IPLEN(v) LS(v, 0, 0x1FF) /* ip/fcoe header end */
#define NGBE_TXD_MACLEN(v) LS(v, 9, 0x7F) /* desc mac len */
#define NGBE_TXD_VLAN(v) LS(v, 16, 0xFFFF) /* vlan tag */
/* @ngbe_tx_ctx_desc.dw1 */
/*** bit 0-31, when NGBE_TXD_DTYP_FCOE=0 ***/
#define NGBE_TXD_IPSEC_SAIDX(v) LS(v, 0, 0x3FF) /* ipsec SA index */
#define NGBE_TXD_ETYPE(v) LS(v, 11, 0x1) /* tunnel type */
#define NGBE_TXD_ETYPE_UDP LS(0, 11, 0x1)
#define NGBE_TXD_ETYPE_GRE LS(1, 11, 0x1)
#define NGBE_TXD_EIPLEN(v) LS(v, 12, 0x7F) /* tunnel ip header */
#define NGBE_TXD_DTYP_FCOE MS(16, 0x1) /* FCoE/IP descriptor */
#define NGBE_TXD_ETUNLEN(v) LS(v, 21, 0xFF) /* tunnel header */
#define NGBE_TXD_DECTTL(v) LS(v, 29, 0xF) /* decrease ip TTL */
/* @ngbe_tx_ctx_desc.dw2 */
#define NGBE_TXD_IPSEC_ESPLEN(v) LS(v, 1, 0x1FF) /* ipsec ESP length */
#define NGBE_TXD_SNAP MS(10, 0x1) /* SNAP indication */
#define NGBE_TXD_TPID_SEL(v) LS(v, 11, 0x7) /* vlan tag index */
#define NGBE_TXD_IPSEC_ESP MS(14, 0x1) /* ipsec type: esp=1 ah=0 */
#define NGBE_TXD_IPSEC_ESPENC MS(15, 0x1) /* ESP encrypt */
#define NGBE_TXD_CTXT MS(20, 0x1) /* context descriptor */
#define NGBE_TXD_PTID(v) LS(v, 24, 0xFF) /* packet type */
/* @ngbe_tx_ctx_desc.dw3 */
#define NGBE_TXD_DD MS(0, 0x1) /* descriptor done */
#define NGBE_TXD_IDX(v) LS(v, 4, 0x1) /* ctxt desc index */
#define NGBE_TXD_L4LEN(v) LS(v, 8, 0xFF) /* l4 header length */
#define NGBE_TXD_MSS(v) LS(v, 16, 0xFFFF) /* l4 MSS */
/**
* Transmit Data Descriptor (NGBE_TXD_TYP=DATA)
**/
struct ngbe_tx_desc {
rte_le64_t qw0; /* r.buffer_addr , w.reserved */
rte_le32_t dw2; /* r.cmd_type_len, w.nxtseq_seed */
rte_le32_t dw3; /* r.olinfo_status, w.status */
};
/* @ngbe_tx_desc.dw2 */
#define NGBE_TXD_DATLEN(v) ((0xFFFF & (v))) /* data buffer length */
#define NGBE_TXD_1588 ((0x1) << 19) /* IEEE1588 time stamp */
#define NGBE_TXD_DATA ((0x0) << 20) /* data descriptor */
#define NGBE_TXD_EOP ((0x1) << 24) /* End of Packet */
#define NGBE_TXD_FCS ((0x1) << 25) /* Insert FCS */
#define NGBE_TXD_LINKSEC ((0x1) << 26) /* Insert LinkSec */
#define NGBE_TXD_ECU ((0x1) << 28) /* forward to ECU */
#define NGBE_TXD_CNTAG ((0x1) << 29) /* insert CN tag */
#define NGBE_TXD_VLE ((0x1) << 30) /* insert VLAN tag */
#define NGBE_TXD_TSE ((0x1) << 31) /* transmit segmentation */
#define NGBE_TXD_FLAGS (NGBE_TXD_FCS | NGBE_TXD_EOP)
/* @ngbe_tx_desc.dw3 */
#define NGBE_TXD_DD_UNUSED NGBE_TXD_DD
#define NGBE_TXD_IDX_UNUSED(v) NGBE_TXD_IDX(v)
#define NGBE_TXD_CC ((0x1) << 7) /* check context */
#define NGBE_TXD_IPSEC ((0x1) << 8) /* request ipsec offload */
#define NGBE_TXD_L4CS ((0x1) << 9) /* insert TCP/UDP/SCTP csum */
#define NGBE_TXD_IPCS ((0x1) << 10) /* insert IPv4 csum */
#define NGBE_TXD_EIPCS ((0x1) << 11) /* insert outer IP csum */
#define NGBE_TXD_MNGFLT ((0x1) << 12) /* enable management filter */
#define NGBE_TXD_PAYLEN(v) ((0x7FFFF & (v)) << 13) /* payload length */
#define RTE_PMD_NGBE_TX_MAX_BURST 32
#define RTE_PMD_NGBE_RX_MAX_BURST 32
#define RTE_NGBE_TX_MAX_FREE_BUF_SZ 64
#define RX_RING_SZ ((NGBE_RING_DESC_MAX + RTE_PMD_NGBE_RX_MAX_BURST) * \
sizeof(struct ngbe_rx_desc))
#define rte_packet_prefetch(p) rte_prefetch1(p)
#define RTE_NGBE_REGISTER_POLL_WAIT_10_MS 10
#define RTE_NGBE_WAIT_100_US 100
#define NGBE_TX_MAX_SEG 40
#ifndef DEFAULT_TX_FREE_THRESH
#define DEFAULT_TX_FREE_THRESH 32
#endif
/**
* Structure associated with each descriptor of the Rx ring of a Rx queue.
*/
struct ngbe_rx_entry {
struct rte_mbuf *mbuf; /**< mbuf associated with Rx descriptor. */
};
struct ngbe_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 ngbe_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 Rx queue.
*/
struct ngbe_rx_queue {
struct rte_mempool *mb_pool; /**< mbuf pool to populate Rx ring */
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 */
volatile struct ngbe_rx_desc *rx_ring; /**< Rx ring virtual address */
/** address of Rx software ring */
struct ngbe_rx_entry *sw_ring;
/** address of scattered Rx software ring */
struct ngbe_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 */
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 */
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 RTE_ETH_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_NGBE_RX_MAX_BURST * 2];
};
/**
* NGBE CTX Constants
*/
enum ngbe_ctx_num {
NGBE_CTX_0 = 0, /**< CTX0 */
NGBE_CTX_1 = 1, /**< CTX1 */
NGBE_CTX_NUM = 2, /**< CTX NUMBER */
};
/** Offload features */
union ngbe_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. */
};
};
/**
* Structure to check if new context need be built
*/
struct ngbe_ctx_info {
uint64_t flags; /**< ol_flags for context build. */
/**< tx offload: vlan, tso, l2-l3-l4 lengths. */
union ngbe_tx_offload tx_offload;
/** compare mask for tx offload. */
union ngbe_tx_offload tx_offload_mask;
};
/**
* Structure associated with each Tx queue.
*/
struct ngbe_tx_queue {
/** Tx ring virtual address */
volatile struct ngbe_tx_desc *tx_ring;
uint64_t tx_ring_phys_addr; /**< Tx ring DMA address */
struct ngbe_tx_entry *sw_ring; /**< address of SW ring for scalar PMD */
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 */
uint32_t ctx_curr; /**< Hardware context states */
/** Hardware context0 history */
struct ngbe_ctx_info ctx_cache[NGBE_CTX_NUM];
uint8_t tx_deferred_start; /**< not in global dev start */
const struct ngbe_txq_ops *ops; /**< txq ops */
};
struct ngbe_txq_ops {
void (*release_mbufs)(struct ngbe_tx_queue *txq);
void (*free_swring)(struct ngbe_tx_queue *txq);
void (*reset)(struct ngbe_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 ngbe_set_tx_function(struct rte_eth_dev *dev, struct ngbe_tx_queue *txq);
void ngbe_set_rx_function(struct rte_eth_dev *dev);
uint64_t ngbe_get_tx_port_offloads(struct rte_eth_dev *dev);
uint64_t ngbe_get_rx_queue_offloads(struct rte_eth_dev *dev);
uint64_t ngbe_get_rx_port_offloads(struct rte_eth_dev *dev);
#endif /* _NGBE_RXTX_H_ */
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