From 1f720275d887edaf7491a89634668de2af78b53e Mon Sep 17 00:00:00 2001 From: Shijith Thotton Date: Sat, 25 Mar 2017 11:54:38 +0530 Subject: [PATCH] net/liquidio: add Tx data path for single segment Signed-off-by: Shijith Thotton Signed-off-by: Jerin Jacob Signed-off-by: Derek Chickles Signed-off-by: Venkat Koppula Signed-off-by: Srisivasubramanian S Signed-off-by: Mallesham Jatharakonda --- drivers/net/liquidio/base/lio_hw_defs.h | 1 + drivers/net/liquidio/lio_ethdev.c | 3 + drivers/net/liquidio/lio_rxtx.c | 89 +++++++++++++++ drivers/net/liquidio/lio_rxtx.h | 138 ++++++++++++++++++++++++ 4 files changed, 231 insertions(+) diff --git a/drivers/net/liquidio/base/lio_hw_defs.h b/drivers/net/liquidio/base/lio_hw_defs.h index 2db70851a9..1c1ad8e6bc 100644 --- a/drivers/net/liquidio/base/lio_hw_defs.h +++ b/drivers/net/liquidio/base/lio_hw_defs.h @@ -108,6 +108,7 @@ enum octeon_tag_type { /* pre-defined host->NIC tag values */ #define LIO_CONTROL (0x11111110) +#define LIO_DATA(i) (0x11111111 + (i)) /* used for NIC operations */ #define LIO_OPCODE 1 diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c index b2e7a2909c..5c5aade5fd 100644 --- a/drivers/net/liquidio/lio_ethdev.c +++ b/drivers/net/liquidio/lio_ethdev.c @@ -529,6 +529,7 @@ lio_eth_dev_uninit(struct rte_eth_dev *eth_dev) eth_dev->data->mac_addrs = NULL; eth_dev->rx_pkt_burst = NULL; + eth_dev->tx_pkt_burst = NULL; return 0; } @@ -542,6 +543,7 @@ lio_eth_dev_init(struct rte_eth_dev *eth_dev) PMD_INIT_FUNC_TRACE(); eth_dev->rx_pkt_burst = &lio_dev_recv_pkts; + eth_dev->tx_pkt_burst = &lio_dev_xmit_pkts; /* Primary does the initialization. */ if (rte_eal_process_type() != RTE_PROC_PRIMARY) @@ -577,6 +579,7 @@ lio_eth_dev_init(struct rte_eth_dev *eth_dev) "MAC addresses memory allocation failed\n"); eth_dev->dev_ops = NULL; eth_dev->rx_pkt_burst = NULL; + eth_dev->tx_pkt_burst = NULL; return -ENOMEM; } diff --git a/drivers/net/liquidio/lio_rxtx.c b/drivers/net/liquidio/lio_rxtx.c index 63d8896d60..14113e1bef 100644 --- a/drivers/net/liquidio/lio_rxtx.c +++ b/drivers/net/liquidio/lio_rxtx.c @@ -1384,3 +1384,92 @@ lio_delete_instruction_queue(struct lio_device *lio_dev, int iq_no) lio_dev->instr_queue[iq_no] = NULL; lio_dev->num_iqs--; } + +/** Send data packet to the device + * @param lio_dev - lio device pointer + * @param ndata - control structure with queueing, and buffer information + * + * @returns IQ_FAILED if it failed to add to the input queue. IQ_STOP if it the + * queue should be stopped, and LIO_IQ_SEND_OK if it sent okay. + */ +static inline int +lio_send_data_pkt(struct lio_device *lio_dev, struct lio_data_pkt *ndata) +{ + return lio_send_command(lio_dev, ndata->q_no, &ndata->cmd, + ndata->buf, ndata->datasize, ndata->reqtype); +} + +uint16_t +lio_dev_xmit_pkts(void *tx_queue, struct rte_mbuf **pkts, uint16_t nb_pkts) +{ + struct lio_instr_queue *txq = tx_queue; + union lio_cmd_setup cmdsetup; + struct lio_device *lio_dev; + struct lio_data_pkt ndata; + int i, processed = 0; + struct rte_mbuf *m; + uint32_t tag = 0; + int status = 0; + int iq_no; + + lio_dev = txq->lio_dev; + iq_no = txq->txpciq.s.q_no; + + if (!lio_dev->linfo.link.s.link_up) { + PMD_TX_LOG(lio_dev, ERR, "Transmit failed link_status : %d\n", + lio_dev->linfo.link.s.link_up); + goto xmit_failed; + } + + for (i = 0; i < nb_pkts; i++) { + uint32_t pkt_len = 0; + + m = pkts[i]; + + /* Prepare the attributes for the data to be passed to BASE. */ + memset(&ndata, 0, sizeof(struct lio_data_pkt)); + + ndata.buf = m; + + ndata.q_no = iq_no; + + cmdsetup.cmd_setup64 = 0; + cmdsetup.s.iq_no = iq_no; + + /* check checksum offload flags to form cmd */ + if (m->ol_flags & PKT_TX_IP_CKSUM) + cmdsetup.s.ip_csum = 1; + + if ((m->ol_flags & PKT_TX_TCP_CKSUM) || + (m->ol_flags & PKT_TX_UDP_CKSUM)) + cmdsetup.s.transport_csum = 1; + + if (m->nb_segs == 1) { + pkt_len = rte_pktmbuf_data_len(m); + cmdsetup.s.u.datasize = pkt_len; + lio_prepare_pci_cmd(lio_dev, &ndata.cmd, + &cmdsetup, tag); + ndata.cmd.cmd3.dptr = rte_mbuf_data_dma_addr(m); + ndata.reqtype = LIO_REQTYPE_NORESP_NET; + } + + ndata.datasize = pkt_len; + + status = lio_send_data_pkt(lio_dev, &ndata); + + if (unlikely(status == LIO_IQ_SEND_FAILED)) { + PMD_TX_LOG(lio_dev, ERR, "send failed\n"); + break; + } + + if (unlikely(status == LIO_IQ_SEND_STOP)) + PMD_TX_LOG(lio_dev, DEBUG, "iq full\n"); + + processed++; + } + +xmit_failed: + + return processed; +} + diff --git a/drivers/net/liquidio/lio_rxtx.h b/drivers/net/liquidio/lio_rxtx.h index 10bca4c9b3..6813aea12e 100644 --- a/drivers/net/liquidio/lio_rxtx.h +++ b/drivers/net/liquidio/lio_rxtx.h @@ -249,6 +249,50 @@ union octeon_cmd { #define OCTEON_CMD_SIZE (sizeof(union octeon_cmd)) +/** Structure of data information passed by driver to the BASE + * layer when forwarding data to Octeon device software. + */ +struct lio_data_pkt { + /** Pointer to information maintained by NIC module for this packet. The + * BASE layer passes this as-is to the driver. + */ + void *buf; + + /** Type of buffer passed in "buf" above. */ + uint32_t reqtype; + + /** Total data bytes to be transferred in this command. */ + uint32_t datasize; + + /** Command to be passed to the Octeon device software. */ + union lio_instr_64B cmd; + + /** Input queue to use to send this command. */ + uint32_t q_no; +}; + +/** Structure passed by driver to BASE layer to prepare a command to send + * network data to Octeon. + */ +union lio_cmd_setup { + struct { + uint32_t iq_no : 8; + uint32_t gather : 1; + uint32_t timestamp : 1; + uint32_t ip_csum : 1; + uint32_t transport_csum : 1; + uint32_t tnl_csum : 1; + uint32_t rsvd : 19; + + union { + uint32_t datasize; + uint32_t gatherptrs; + } u; + } s; + + uint64_t cmd_setup64; +}; + /* Instruction Header */ struct octeon_instr_ih3 { #if RTE_BYTE_ORDER == RTE_BIG_ENDIAN @@ -418,6 +462,98 @@ struct octeon_instr_rdp { #endif }; +union octeon_packet_params { + uint32_t pkt_params32; + struct { +#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN + uint32_t reserved : 24; + uint32_t ip_csum : 1; /* Perform IP header checksum(s) */ + /* Perform Outer transport header checksum */ + uint32_t transport_csum : 1; + /* Find tunnel, and perform transport csum. */ + uint32_t tnl_csum : 1; + uint32_t tsflag : 1; /* Timestamp this packet */ + uint32_t ipsec_ops : 4; /* IPsec operation */ +#else + uint32_t ipsec_ops : 4; + uint32_t tsflag : 1; + uint32_t tnl_csum : 1; + uint32_t transport_csum : 1; + uint32_t ip_csum : 1; + uint32_t reserved : 7; +#endif + } s; +}; + +/** Utility function to prepare a 64B NIC instruction based on a setup command + * @param cmd - pointer to instruction to be filled in. + * @param setup - pointer to the setup structure + * @param q_no - which queue for back pressure + * + * Assumes the cmd instruction is pre-allocated, but no fields are filled in. + */ +static inline void +lio_prepare_pci_cmd(struct lio_device *lio_dev, + union lio_instr_64B *cmd, + union lio_cmd_setup *setup, + uint32_t tag) +{ + union octeon_packet_params packet_params; + struct octeon_instr_pki_ih3 *pki_ih3; + struct octeon_instr_irh *irh; + struct octeon_instr_ih3 *ih3; + int port; + + memset(cmd, 0, sizeof(union lio_instr_64B)); + + ih3 = (struct octeon_instr_ih3 *)&cmd->cmd3.ih3; + pki_ih3 = (struct octeon_instr_pki_ih3 *)&cmd->cmd3.pki_ih3; + + /* assume that rflag is cleared so therefore front data will only have + * irh and ossp[1] and ossp[2] for a total of 24 bytes + */ + ih3->pkind = lio_dev->instr_queue[setup->s.iq_no]->txpciq.s.pkind; + /* PKI IH */ + ih3->fsz = OCTEON_PCI_CMD_O3; + + if (!setup->s.gather) { + ih3->dlengsz = setup->s.u.datasize; + } else { + ih3->gather = 1; + ih3->dlengsz = setup->s.u.gatherptrs; + } + + pki_ih3->w = 1; + pki_ih3->raw = 0; + pki_ih3->utag = 0; + pki_ih3->utt = 1; + pki_ih3->uqpg = lio_dev->instr_queue[setup->s.iq_no]->txpciq.s.use_qpg; + + port = (int)lio_dev->instr_queue[setup->s.iq_no]->txpciq.s.port; + + if (tag) + pki_ih3->tag = tag; + else + pki_ih3->tag = LIO_DATA(port); + + pki_ih3->tagtype = OCTEON_ORDERED_TAG; + pki_ih3->qpg = lio_dev->instr_queue[setup->s.iq_no]->txpciq.s.qpg; + pki_ih3->pm = 0x0; /* parse from L2 */ + pki_ih3->sl = 32; /* sl will be sizeof(pki_ih3) + irh + ossp0 + ossp1*/ + + irh = (struct octeon_instr_irh *)&cmd->cmd3.irh; + + irh->opcode = LIO_OPCODE; + irh->subcode = LIO_OPCODE_NW_DATA; + + packet_params.pkt_params32 = 0; + packet_params.s.ip_csum = setup->s.ip_csum; + packet_params.s.transport_csum = setup->s.transport_csum; + packet_params.s.tsflag = setup->s.timestamp; + + irh->ossp = packet_params.pkt_params32; +} + int lio_setup_sc_buffer_pool(struct lio_device *lio_dev); void lio_free_sc_buffer_pool(struct lio_device *lio_dev); @@ -554,6 +690,8 @@ void lio_delete_droq_queue(struct lio_device *lio_dev, int oq_no); int lio_setup_sglists(struct lio_device *lio_dev, int iq_no, int fw_mapped_iq, int num_descs, unsigned int socket_id); +uint16_t lio_dev_xmit_pkts(void *tx_queue, struct rte_mbuf **pkts, + uint16_t nb_pkts); int lio_setup_iq(struct lio_device *lio_dev, int q_index, union octeon_txpciq iq_no, uint32_t num_descs, void *app_ctx, unsigned int socket_id); -- 2.20.1