/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2010-2016 Intel Corporation */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "i40e_logs.h" #include "base/i40e_prototype.h" #include "base/i40e_type.h" #include "i40e_ethdev.h" #include "i40e_rxtx.h" #define DEFAULT_TX_RS_THRESH 32 #define DEFAULT_TX_FREE_THRESH 32 #define I40E_TX_MAX_BURST 32 #define I40E_DMA_MEM_ALIGN 4096 /* Base address of the HW descriptor ring should be 128B aligned. */ #define I40E_RING_BASE_ALIGN 128 #define I40E_TXD_CMD (I40E_TX_DESC_CMD_EOP | I40E_TX_DESC_CMD_RS) #ifdef RTE_LIBRTE_IEEE1588 #define I40E_TX_IEEE1588_TMST PKT_TX_IEEE1588_TMST #else #define I40E_TX_IEEE1588_TMST 0 #endif #define I40E_TX_CKSUM_OFFLOAD_MASK ( \ PKT_TX_IP_CKSUM | \ PKT_TX_L4_MASK | \ PKT_TX_TCP_SEG | \ PKT_TX_OUTER_IP_CKSUM) #define I40E_TX_OFFLOAD_MASK ( \ PKT_TX_OUTER_IPV4 | \ PKT_TX_OUTER_IPV6 | \ PKT_TX_IPV4 | \ PKT_TX_IPV6 | \ PKT_TX_IP_CKSUM | \ PKT_TX_L4_MASK | \ PKT_TX_OUTER_IP_CKSUM | \ PKT_TX_TCP_SEG | \ PKT_TX_QINQ_PKT | \ PKT_TX_VLAN_PKT | \ PKT_TX_TUNNEL_MASK | \ I40E_TX_IEEE1588_TMST) #define I40E_TX_OFFLOAD_NOTSUP_MASK \ (PKT_TX_OFFLOAD_MASK ^ I40E_TX_OFFLOAD_MASK) static inline void i40e_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union i40e_rx_desc *rxdp) { if (rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) & (1 << I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)) { mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED; mb->vlan_tci = rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1); PMD_RX_LOG(DEBUG, "Descriptor l2tag1: %u", rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1)); } else { mb->vlan_tci = 0; } #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC if (rte_le_to_cpu_16(rxdp->wb.qword2.ext_status) & (1 << I40E_RX_DESC_EXT_STATUS_L2TAG2P_SHIFT)) { mb->ol_flags |= PKT_RX_QINQ_STRIPPED | PKT_RX_QINQ | PKT_RX_VLAN_STRIPPED | PKT_RX_VLAN; mb->vlan_tci_outer = mb->vlan_tci; mb->vlan_tci = rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_2); PMD_RX_LOG(DEBUG, "Descriptor l2tag2_1: %u, l2tag2_2: %u", rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_1), rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_2)); } else { mb->vlan_tci_outer = 0; } #endif PMD_RX_LOG(DEBUG, "Mbuf vlan_tci: %u, vlan_tci_outer: %u", mb->vlan_tci, mb->vlan_tci_outer); } /* Translate the rx descriptor status to pkt flags */ static inline uint64_t i40e_rxd_status_to_pkt_flags(uint64_t qword) { uint64_t flags; /* Check if RSS_HASH */ flags = (((qword >> I40E_RX_DESC_STATUS_FLTSTAT_SHIFT) & I40E_RX_DESC_FLTSTAT_RSS_HASH) == I40E_RX_DESC_FLTSTAT_RSS_HASH) ? PKT_RX_RSS_HASH : 0; /* Check if FDIR Match */ flags |= (qword & (1 << I40E_RX_DESC_STATUS_FLM_SHIFT) ? PKT_RX_FDIR : 0); return flags; } static inline uint64_t i40e_rxd_error_to_pkt_flags(uint64_t qword) { uint64_t flags = 0; uint64_t error_bits = (qword >> I40E_RXD_QW1_ERROR_SHIFT); #define I40E_RX_ERR_BITS 0x3f if (likely((error_bits & I40E_RX_ERR_BITS) == 0)) { flags |= (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD); return flags; } if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_IPE_SHIFT))) flags |= PKT_RX_IP_CKSUM_BAD; else flags |= PKT_RX_IP_CKSUM_GOOD; if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_L4E_SHIFT))) flags |= PKT_RX_L4_CKSUM_BAD; else flags |= PKT_RX_L4_CKSUM_GOOD; if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_EIPE_SHIFT))) flags |= PKT_RX_EIP_CKSUM_BAD; return flags; } /* Function to check and set the ieee1588 timesync index and get the * appropriate flags. */ #ifdef RTE_LIBRTE_IEEE1588 static inline uint64_t i40e_get_iee15888_flags(struct rte_mbuf *mb, uint64_t qword) { uint64_t pkt_flags = 0; uint16_t tsyn = (qword & (I40E_RXD_QW1_STATUS_TSYNVALID_MASK | I40E_RXD_QW1_STATUS_TSYNINDX_MASK)) >> I40E_RX_DESC_STATUS_TSYNINDX_SHIFT; if ((mb->packet_type & RTE_PTYPE_L2_MASK) == RTE_PTYPE_L2_ETHER_TIMESYNC) pkt_flags = PKT_RX_IEEE1588_PTP; if (tsyn & 0x04) { pkt_flags |= PKT_RX_IEEE1588_TMST; mb->timesync = tsyn & 0x03; } return pkt_flags; } #endif #define I40E_RX_DESC_EXT_STATUS_FLEXBH_MASK 0x03 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID 0x01 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_FLEX 0x02 #define I40E_RX_DESC_EXT_STATUS_FLEXBL_MASK 0x03 #define I40E_RX_DESC_EXT_STATUS_FLEXBL_FLEX 0x01 static inline uint64_t i40e_rxd_build_fdir(volatile union i40e_rx_desc *rxdp, struct rte_mbuf *mb) { uint64_t flags = 0; #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC uint16_t flexbh, flexbl; flexbh = (rte_le_to_cpu_32(rxdp->wb.qword2.ext_status) >> I40E_RX_DESC_EXT_STATUS_FLEXBH_SHIFT) & I40E_RX_DESC_EXT_STATUS_FLEXBH_MASK; flexbl = (rte_le_to_cpu_32(rxdp->wb.qword2.ext_status) >> I40E_RX_DESC_EXT_STATUS_FLEXBL_SHIFT) & I40E_RX_DESC_EXT_STATUS_FLEXBL_MASK; if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID) { mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.fd_id); flags |= PKT_RX_FDIR_ID; } else if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FLEX) { mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.flex_bytes_hi); flags |= PKT_RX_FDIR_FLX; } if (flexbl == I40E_RX_DESC_EXT_STATUS_FLEXBL_FLEX) { mb->hash.fdir.lo = rte_le_to_cpu_32(rxdp->wb.qword3.lo_dword.flex_bytes_lo); flags |= PKT_RX_FDIR_FLX; } #else mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword0.hi_dword.fd_id); flags |= PKT_RX_FDIR_ID; #endif return flags; } static inline void i40e_parse_tunneling_params(uint64_t ol_flags, union i40e_tx_offload tx_offload, uint32_t *cd_tunneling) { /* EIPT: External (outer) IP header type */ if (ol_flags & PKT_TX_OUTER_IP_CKSUM) *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV4; else if (ol_flags & PKT_TX_OUTER_IPV4) *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV4_NO_CSUM; else if (ol_flags & PKT_TX_OUTER_IPV6) *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV6; /* EIPLEN: External (outer) IP header length, in DWords */ *cd_tunneling |= (tx_offload.outer_l3_len >> 2) << I40E_TXD_CTX_QW0_EXT_IPLEN_SHIFT; /* L4TUNT: L4 Tunneling Type */ switch (ol_flags & PKT_TX_TUNNEL_MASK) { case PKT_TX_TUNNEL_IPIP: /* for non UDP / GRE tunneling, set to 00b */ break; case PKT_TX_TUNNEL_VXLAN: case PKT_TX_TUNNEL_GENEVE: *cd_tunneling |= I40E_TXD_CTX_UDP_TUNNELING; break; case PKT_TX_TUNNEL_GRE: *cd_tunneling |= I40E_TXD_CTX_GRE_TUNNELING; break; default: PMD_TX_LOG(ERR, "Tunnel type not supported"); return; } /* L4TUNLEN: L4 Tunneling Length, in Words * * We depend on app to set rte_mbuf.l2_len correctly. * For IP in GRE it should be set to the length of the GRE * header; * for MAC in GRE or MAC in UDP it should be set to the length * of the GRE or UDP headers plus the inner MAC up to including * its last Ethertype. */ *cd_tunneling |= (tx_offload.l2_len >> 1) << I40E_TXD_CTX_QW0_NATLEN_SHIFT; } static inline void i40e_txd_enable_checksum(uint64_t ol_flags, uint32_t *td_cmd, uint32_t *td_offset, union i40e_tx_offload tx_offload) { /* Set MACLEN */ if (ol_flags & PKT_TX_TUNNEL_MASK) *td_offset |= (tx_offload.outer_l2_len >> 1) << I40E_TX_DESC_LENGTH_MACLEN_SHIFT; else *td_offset |= (tx_offload.l2_len >> 1) << I40E_TX_DESC_LENGTH_MACLEN_SHIFT; /* Enable L3 checksum offloads */ if (ol_flags & PKT_TX_IP_CKSUM) { *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4_CSUM; *td_offset |= (tx_offload.l3_len >> 2) << I40E_TX_DESC_LENGTH_IPLEN_SHIFT; } else if (ol_flags & PKT_TX_IPV4) { *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4; *td_offset |= (tx_offload.l3_len >> 2) << I40E_TX_DESC_LENGTH_IPLEN_SHIFT; } else if (ol_flags & PKT_TX_IPV6) { *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV6; *td_offset |= (tx_offload.l3_len >> 2) << I40E_TX_DESC_LENGTH_IPLEN_SHIFT; } if (ol_flags & PKT_TX_TCP_SEG) { *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_TCP; *td_offset |= (tx_offload.l4_len >> 2) << I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT; return; } /* Enable L4 checksum offloads */ switch (ol_flags & PKT_TX_L4_MASK) { case PKT_TX_TCP_CKSUM: *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_TCP; *td_offset |= (sizeof(struct tcp_hdr) >> 2) << I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT; break; case PKT_TX_SCTP_CKSUM: *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_SCTP; *td_offset |= (sizeof(struct sctp_hdr) >> 2) << I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT; break; case PKT_TX_UDP_CKSUM: *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_UDP; *td_offset |= (sizeof(struct udp_hdr) >> 2) << I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT; break; default: break; } } /* Construct the tx flags */ static inline uint64_t i40e_build_ctob(uint32_t td_cmd, uint32_t td_offset, unsigned int size, uint32_t td_tag) { return rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DATA | ((uint64_t)td_cmd << I40E_TXD_QW1_CMD_SHIFT) | ((uint64_t)td_offset << I40E_TXD_QW1_OFFSET_SHIFT) | ((uint64_t)size << I40E_TXD_QW1_TX_BUF_SZ_SHIFT) | ((uint64_t)td_tag << I40E_TXD_QW1_L2TAG1_SHIFT)); } static inline int i40e_xmit_cleanup(struct i40e_tx_queue *txq) { struct i40e_tx_entry *sw_ring = txq->sw_ring; volatile struct i40e_tx_desc *txd = txq->tx_ring; uint16_t last_desc_cleaned = txq->last_desc_cleaned; uint16_t nb_tx_desc = txq->nb_tx_desc; uint16_t desc_to_clean_to; uint16_t nb_tx_to_clean; desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh); if (desc_to_clean_to >= nb_tx_desc) desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc); desc_to_clean_to = sw_ring[desc_to_clean_to].last_id; if ((txd[desc_to_clean_to].cmd_type_offset_bsz & rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) != rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)) { PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done " "(port=%d queue=%d)", desc_to_clean_to, txq->port_id, txq->queue_id); return -1; } if (last_desc_cleaned > desc_to_clean_to) nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) + desc_to_clean_to); else nb_tx_to_clean = (uint16_t)(desc_to_clean_to - last_desc_cleaned); txd[desc_to_clean_to].cmd_type_offset_bsz = 0; txq->last_desc_cleaned = desc_to_clean_to; txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean); return 0; } static inline int #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC check_rx_burst_bulk_alloc_preconditions(struct i40e_rx_queue *rxq) #else check_rx_burst_bulk_alloc_preconditions(__rte_unused struct i40e_rx_queue *rxq) #endif { int ret = 0; #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC if (!(rxq->rx_free_thresh >= RTE_PMD_I40E_RX_MAX_BURST)) { PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " "rxq->rx_free_thresh=%d, " "RTE_PMD_I40E_RX_MAX_BURST=%d", rxq->rx_free_thresh, RTE_PMD_I40E_RX_MAX_BURST); ret = -EINVAL; } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) { PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " "rxq->rx_free_thresh=%d, " "rxq->nb_rx_desc=%d", rxq->rx_free_thresh, rxq->nb_rx_desc); ret = -EINVAL; } else if (rxq->nb_rx_desc % rxq->rx_free_thresh != 0) { PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " "rxq->nb_rx_desc=%d, " "rxq->rx_free_thresh=%d", rxq->nb_rx_desc, rxq->rx_free_thresh); ret = -EINVAL; } #else ret = -EINVAL; #endif return ret; } #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC #define I40E_LOOK_AHEAD 8 #if (I40E_LOOK_AHEAD != 8) #error "PMD I40E: I40E_LOOK_AHEAD must be 8\n" #endif static inline int i40e_rx_scan_hw_ring(struct i40e_rx_queue *rxq) { volatile union i40e_rx_desc *rxdp; struct i40e_rx_entry *rxep; struct rte_mbuf *mb; uint16_t pkt_len; uint64_t qword1; uint32_t rx_status; int32_t s[I40E_LOOK_AHEAD], nb_dd; int32_t i, j, nb_rx = 0; uint64_t pkt_flags; uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl; rxdp = &rxq->rx_ring[rxq->rx_tail]; rxep = &rxq->sw_ring[rxq->rx_tail]; qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len); rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT; /* Make sure there is at least 1 packet to receive */ if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT))) return 0; /** * Scan LOOK_AHEAD descriptors at a time to determine which * descriptors reference packets that are ready to be received. */ for (i = 0; i < RTE_PMD_I40E_RX_MAX_BURST; i+=I40E_LOOK_AHEAD, rxdp += I40E_LOOK_AHEAD, rxep += I40E_LOOK_AHEAD) { /* Read desc statuses backwards to avoid race condition */ for (j = I40E_LOOK_AHEAD - 1; j >= 0; j--) { qword1 = rte_le_to_cpu_64(\ rxdp[j].wb.qword1.status_error_len); s[j] = (qword1 & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT; } rte_smp_rmb(); /* Compute how many status bits were set */ for (j = 0, nb_dd = 0; j < I40E_LOOK_AHEAD; j++) nb_dd += s[j] & (1 << I40E_RX_DESC_STATUS_DD_SHIFT); nb_rx += nb_dd; /* Translate descriptor info to mbuf parameters */ for (j = 0; j < nb_dd; j++) { mb = rxep[j].mbuf; qword1 = rte_le_to_cpu_64(\ rxdp[j].wb.qword1.status_error_len); pkt_len = ((qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >> I40E_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len; mb->data_len = pkt_len; mb->pkt_len = pkt_len; mb->ol_flags = 0; i40e_rxd_to_vlan_tci(mb, &rxdp[j]); pkt_flags = i40e_rxd_status_to_pkt_flags(qword1); pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1); mb->packet_type = ptype_tbl[(uint8_t)((qword1 & I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT)]; if (pkt_flags & PKT_RX_RSS_HASH) mb->hash.rss = rte_le_to_cpu_32(\ rxdp[j].wb.qword0.hi_dword.rss); if (pkt_flags & PKT_RX_FDIR) pkt_flags |= i40e_rxd_build_fdir(&rxdp[j], mb); #ifdef RTE_LIBRTE_IEEE1588 pkt_flags |= i40e_get_iee15888_flags(mb, qword1); #endif mb->ol_flags |= pkt_flags; } for (j = 0; j < I40E_LOOK_AHEAD; j++) rxq->rx_stage[i + j] = rxep[j].mbuf; if (nb_dd != I40E_LOOK_AHEAD) break; } /* Clear software ring entries */ for (i = 0; i < nb_rx; i++) rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL; return nb_rx; } static inline uint16_t i40e_rx_fill_from_stage(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { uint16_t i; struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail]; nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail); for (i = 0; i < nb_pkts; i++) rx_pkts[i] = stage[i]; rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts); rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts); return nb_pkts; } static inline int i40e_rx_alloc_bufs(struct i40e_rx_queue *rxq) { volatile union i40e_rx_desc *rxdp; struct i40e_rx_entry *rxep; struct rte_mbuf *mb; uint16_t alloc_idx, i; uint64_t dma_addr; int diag; /* Allocate buffers in bulk */ alloc_idx = (uint16_t)(rxq->rx_free_trigger - (rxq->rx_free_thresh - 1)); rxep = &(rxq->sw_ring[alloc_idx]); diag = rte_mempool_get_bulk(rxq->mp, (void *)rxep, rxq->rx_free_thresh); if (unlikely(diag != 0)) { PMD_DRV_LOG(ERR, "Failed to get mbufs in bulk"); return -ENOMEM; } rxdp = &rxq->rx_ring[alloc_idx]; for (i = 0; i < rxq->rx_free_thresh; i++) { if (likely(i < (rxq->rx_free_thresh - 1))) /* Prefetch next mbuf */ rte_prefetch0(rxep[i + 1].mbuf); mb = rxep[i].mbuf; rte_mbuf_refcnt_set(mb, 1); mb->next = NULL; mb->data_off = RTE_PKTMBUF_HEADROOM; mb->nb_segs = 1; mb->port = rxq->port_id; dma_addr = rte_cpu_to_le_64(\ rte_mbuf_data_iova_default(mb)); rxdp[i].read.hdr_addr = 0; rxdp[i].read.pkt_addr = dma_addr; } /* Update rx tail regsiter */ rte_wmb(); I40E_PCI_REG_WRITE_RELAXED(rxq->qrx_tail, rxq->rx_free_trigger); rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_trigger + rxq->rx_free_thresh); if (rxq->rx_free_trigger >= rxq->nb_rx_desc) rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1); return 0; } static inline uint16_t rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { struct i40e_rx_queue *rxq = (struct i40e_rx_queue *)rx_queue; struct rte_eth_dev *dev; uint16_t nb_rx = 0; if (!nb_pkts) return 0; if (rxq->rx_nb_avail) return i40e_rx_fill_from_stage(rxq, rx_pkts, nb_pkts); nb_rx = (uint16_t)i40e_rx_scan_hw_ring(rxq); rxq->rx_next_avail = 0; rxq->rx_nb_avail = nb_rx; rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx); if (rxq->rx_tail > rxq->rx_free_trigger) { if (i40e_rx_alloc_bufs(rxq) != 0) { uint16_t i, j; dev = I40E_VSI_TO_ETH_DEV(rxq->vsi); dev->data->rx_mbuf_alloc_failed += rxq->rx_free_thresh; rxq->rx_nb_avail = 0; rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx); for (i = 0, j = rxq->rx_tail; i < nb_rx; i++, j++) rxq->sw_ring[j].mbuf = rxq->rx_stage[i]; return 0; } } if (rxq->rx_tail >= rxq->nb_rx_desc) rxq->rx_tail = 0; if (rxq->rx_nb_avail) return i40e_rx_fill_from_stage(rxq, rx_pkts, nb_pkts); return 0; } static uint16_t i40e_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { uint16_t nb_rx = 0, n, count; if (unlikely(nb_pkts == 0)) return 0; if (likely(nb_pkts <= RTE_PMD_I40E_RX_MAX_BURST)) return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts); while (nb_pkts) { n = RTE_MIN(nb_pkts, RTE_PMD_I40E_RX_MAX_BURST); count = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n); nb_rx = (uint16_t)(nb_rx + count); nb_pkts = (uint16_t)(nb_pkts - count); if (count < n) break; } return nb_rx; } #else static uint16_t i40e_recv_pkts_bulk_alloc(void __rte_unused *rx_queue, struct rte_mbuf __rte_unused **rx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */ uint16_t i40e_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { struct i40e_rx_queue *rxq; volatile union i40e_rx_desc *rx_ring; volatile union i40e_rx_desc *rxdp; union i40e_rx_desc rxd; struct i40e_rx_entry *sw_ring; struct i40e_rx_entry *rxe; struct rte_eth_dev *dev; struct rte_mbuf *rxm; struct rte_mbuf *nmb; uint16_t nb_rx; uint32_t rx_status; uint64_t qword1; uint16_t rx_packet_len; uint16_t rx_id, nb_hold; uint64_t dma_addr; uint64_t pkt_flags; uint32_t *ptype_tbl; nb_rx = 0; nb_hold = 0; rxq = rx_queue; rx_id = rxq->rx_tail; rx_ring = rxq->rx_ring; sw_ring = rxq->sw_ring; ptype_tbl = rxq->vsi->adapter->ptype_tbl; while (nb_rx < nb_pkts) { rxdp = &rx_ring[rx_id]; qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len); rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT; /* Check the DD bit first */ if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT))) break; nmb = rte_mbuf_raw_alloc(rxq->mp); if (unlikely(!nmb)) { dev = I40E_VSI_TO_ETH_DEV(rxq->vsi); dev->data->rx_mbuf_alloc_failed++; break; } rxd = *rxdp; nb_hold++; rxe = &sw_ring[rx_id]; rx_id++; if (unlikely(rx_id == rxq->nb_rx_desc)) rx_id = 0; /* Prefetch next mbuf */ rte_prefetch0(sw_ring[rx_id].mbuf); /** * When next RX descriptor is on a cache line boundary, * prefetch the next 4 RX descriptors and next 8 pointers * to mbufs. */ if ((rx_id & 0x3) == 0) { rte_prefetch0(&rx_ring[rx_id]); rte_prefetch0(&sw_ring[rx_id]); } rxm = rxe->mbuf; rxe->mbuf = nmb; dma_addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb)); rxdp->read.hdr_addr = 0; rxdp->read.pkt_addr = dma_addr; rx_packet_len = ((qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >> I40E_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len; rxm->data_off = RTE_PKTMBUF_HEADROOM; rte_prefetch0(RTE_PTR_ADD(rxm->buf_addr, RTE_PKTMBUF_HEADROOM)); rxm->nb_segs = 1; rxm->next = NULL; rxm->pkt_len = rx_packet_len; rxm->data_len = rx_packet_len; rxm->port = rxq->port_id; rxm->ol_flags = 0; i40e_rxd_to_vlan_tci(rxm, &rxd); pkt_flags = i40e_rxd_status_to_pkt_flags(qword1); pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1); rxm->packet_type = ptype_tbl[(uint8_t)((qword1 & I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT)]; if (pkt_flags & PKT_RX_RSS_HASH) rxm->hash.rss = rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss); if (pkt_flags & PKT_RX_FDIR) pkt_flags |= i40e_rxd_build_fdir(&rxd, rxm); #ifdef RTE_LIBRTE_IEEE1588 pkt_flags |= i40e_get_iee15888_flags(rxm, qword1); #endif rxm->ol_flags |= pkt_flags; rx_pkts[nb_rx++] = rxm; } rxq->rx_tail = rx_id; /** * If the number of free RX descriptors is greater than the RX free * threshold of the queue, advance the receive tail register of queue. * Update that register with the value of the last processed RX * descriptor minus 1. */ nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold); if (nb_hold > rxq->rx_free_thresh) { rx_id = (uint16_t) ((rx_id == 0) ? (rxq->nb_rx_desc - 1) : (rx_id - 1)); I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id); nb_hold = 0; } rxq->nb_rx_hold = nb_hold; return nb_rx; } uint16_t i40e_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { struct i40e_rx_queue *rxq = rx_queue; volatile union i40e_rx_desc *rx_ring = rxq->rx_ring; volatile union i40e_rx_desc *rxdp; union i40e_rx_desc rxd; struct i40e_rx_entry *sw_ring = rxq->sw_ring; struct i40e_rx_entry *rxe; struct rte_mbuf *first_seg = rxq->pkt_first_seg; struct rte_mbuf *last_seg = rxq->pkt_last_seg; struct rte_mbuf *nmb, *rxm; uint16_t rx_id = rxq->rx_tail; uint16_t nb_rx = 0, nb_hold = 0, rx_packet_len; struct rte_eth_dev *dev; uint32_t rx_status; uint64_t qword1; uint64_t dma_addr; uint64_t pkt_flags; uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl; while (nb_rx < nb_pkts) { rxdp = &rx_ring[rx_id]; qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len); rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT; /* Check the DD bit */ if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT))) break; nmb = rte_mbuf_raw_alloc(rxq->mp); if (unlikely(!nmb)) { dev = I40E_VSI_TO_ETH_DEV(rxq->vsi); dev->data->rx_mbuf_alloc_failed++; break; } rxd = *rxdp; nb_hold++; rxe = &sw_ring[rx_id]; rx_id++; if (rx_id == rxq->nb_rx_desc) rx_id = 0; /* Prefetch next mbuf */ rte_prefetch0(sw_ring[rx_id].mbuf); /** * When next RX descriptor is on a cache line boundary, * prefetch the next 4 RX descriptors and next 8 pointers * to mbufs. */ if ((rx_id & 0x3) == 0) { rte_prefetch0(&rx_ring[rx_id]); rte_prefetch0(&sw_ring[rx_id]); } rxm = rxe->mbuf; rxe->mbuf = nmb; dma_addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb)); /* Set data buffer address and data length of the mbuf */ rxdp->read.hdr_addr = 0; rxdp->read.pkt_addr = dma_addr; rx_packet_len = (qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >> I40E_RXD_QW1_LENGTH_PBUF_SHIFT; rxm->data_len = rx_packet_len; rxm->data_off = RTE_PKTMBUF_HEADROOM; /** * If this is the first buffer of the received packet, set the * pointer to the first mbuf of the packet and initialize its * context. Otherwise, update the total length and the number * of segments of the current scattered packet, and update the * pointer to the last mbuf of the current packet. */ if (!first_seg) { first_seg = rxm; first_seg->nb_segs = 1; first_seg->pkt_len = rx_packet_len; } else { first_seg->pkt_len = (uint16_t)(first_seg->pkt_len + rx_packet_len); first_seg->nb_segs++; last_seg->next = rxm; } /** * If this is not the last buffer of the received packet, * update the pointer to the last mbuf of the current scattered * packet and continue to parse the RX ring. */ if (!(rx_status & (1 << I40E_RX_DESC_STATUS_EOF_SHIFT))) { last_seg = rxm; continue; } /** * This is the last buffer of the received packet. If the CRC * is not stripped by the hardware: * - Subtract the CRC length from the total packet length. * - If the last buffer only contains the whole CRC or a part * of it, free the mbuf associated to the last buffer. If part * of the CRC is also contained in the previous mbuf, subtract * the length of that CRC part from the data length of the * previous mbuf. */ rxm->next = NULL; if (unlikely(rxq->crc_len > 0)) { first_seg->pkt_len -= ETHER_CRC_LEN; if (rx_packet_len <= ETHER_CRC_LEN) { rte_pktmbuf_free_seg(rxm); first_seg->nb_segs--; last_seg->data_len = (uint16_t)(last_seg->data_len - (ETHER_CRC_LEN - rx_packet_len)); last_seg->next = NULL; } else rxm->data_len = (uint16_t)(rx_packet_len - ETHER_CRC_LEN); } first_seg->port = rxq->port_id; first_seg->ol_flags = 0; i40e_rxd_to_vlan_tci(first_seg, &rxd); pkt_flags = i40e_rxd_status_to_pkt_flags(qword1); pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1); first_seg->packet_type = ptype_tbl[(uint8_t)((qword1 & I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT)]; if (pkt_flags & PKT_RX_RSS_HASH) first_seg->hash.rss = rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss); if (pkt_flags & PKT_RX_FDIR) pkt_flags |= i40e_rxd_build_fdir(&rxd, first_seg); #ifdef RTE_LIBRTE_IEEE1588 pkt_flags |= i40e_get_iee15888_flags(first_seg, qword1); #endif first_seg->ol_flags |= pkt_flags; /* Prefetch data of first segment, if configured to do so. */ rte_prefetch0(RTE_PTR_ADD(first_seg->buf_addr, first_seg->data_off)); rx_pkts[nb_rx++] = first_seg; first_seg = NULL; } /* Record index of the next RX descriptor to probe. */ rxq->rx_tail = rx_id; rxq->pkt_first_seg = first_seg; rxq->pkt_last_seg = last_seg; /** * If the number of free RX descriptors is greater than the RX free * threshold of the queue, advance the Receive Descriptor Tail (RDT) * register. Update the RDT with the value of the last processed RX * descriptor minus 1, to guarantee that the RDT register is never * equal to the RDH register, which creates a "full" ring situtation * from the hardware point of view. */ nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold); if (nb_hold > rxq->rx_free_thresh) { rx_id = (uint16_t)(rx_id == 0 ? (rxq->nb_rx_desc - 1) : (rx_id - 1)); I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id); nb_hold = 0; } rxq->nb_rx_hold = nb_hold; return nb_rx; } /* Check if the context descriptor is needed for TX offloading */ static inline uint16_t i40e_calc_context_desc(uint64_t flags) { static uint64_t mask = PKT_TX_OUTER_IP_CKSUM | PKT_TX_TCP_SEG | PKT_TX_QINQ_PKT | PKT_TX_TUNNEL_MASK; #ifdef RTE_LIBRTE_IEEE1588 mask |= PKT_TX_IEEE1588_TMST; #endif return (flags & mask) ? 1 : 0; } /* set i40e TSO context descriptor */ static inline uint64_t i40e_set_tso_ctx(struct rte_mbuf *mbuf, union i40e_tx_offload tx_offload) { uint64_t ctx_desc = 0; uint32_t cd_cmd, hdr_len, cd_tso_len; if (!tx_offload.l4_len) { PMD_DRV_LOG(DEBUG, "L4 length set to 0"); return ctx_desc; } /** * in case of non tunneling packet, the outer_l2_len and * outer_l3_len must be 0. */ hdr_len = tx_offload.outer_l2_len + tx_offload.outer_l3_len + tx_offload.l2_len + tx_offload.l3_len + tx_offload.l4_len; cd_cmd = I40E_TX_CTX_DESC_TSO; cd_tso_len = mbuf->pkt_len - hdr_len; ctx_desc |= ((uint64_t)cd_cmd << I40E_TXD_CTX_QW1_CMD_SHIFT) | ((uint64_t)cd_tso_len << I40E_TXD_CTX_QW1_TSO_LEN_SHIFT) | ((uint64_t)mbuf->tso_segsz << I40E_TXD_CTX_QW1_MSS_SHIFT); return ctx_desc; } uint16_t i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) { struct i40e_tx_queue *txq; struct i40e_tx_entry *sw_ring; struct i40e_tx_entry *txe, *txn; volatile struct i40e_tx_desc *txd; volatile struct i40e_tx_desc *txr; struct rte_mbuf *tx_pkt; struct rte_mbuf *m_seg; uint32_t cd_tunneling_params; uint16_t tx_id; uint16_t nb_tx; uint32_t td_cmd; uint32_t td_offset; uint32_t td_tag; uint64_t ol_flags; uint16_t nb_used; uint16_t nb_ctx; uint16_t tx_last; uint16_t slen; uint64_t buf_dma_addr; union i40e_tx_offload tx_offload = {0}; txq = tx_queue; sw_ring = txq->sw_ring; txr = txq->tx_ring; tx_id = txq->tx_tail; txe = &sw_ring[tx_id]; /* Check if the descriptor ring needs to be cleaned. */ if (txq->nb_tx_free < txq->tx_free_thresh) i40e_xmit_cleanup(txq); for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) { td_cmd = 0; td_tag = 0; td_offset = 0; tx_pkt = *tx_pkts++; RTE_MBUF_PREFETCH_TO_FREE(txe->mbuf); ol_flags = tx_pkt->ol_flags; tx_offload.l2_len = tx_pkt->l2_len; tx_offload.l3_len = tx_pkt->l3_len; tx_offload.outer_l2_len = tx_pkt->outer_l2_len; tx_offload.outer_l3_len = tx_pkt->outer_l3_len; tx_offload.l4_len = tx_pkt->l4_len; tx_offload.tso_segsz = tx_pkt->tso_segsz; /* Calculate the number of context descriptors needed. */ nb_ctx = i40e_calc_context_desc(ol_flags); /** * The number of descriptors that must be allocated for * a packet equals to the number of the segments of that * packet plus 1 context descriptor if needed. */ nb_used = (uint16_t)(tx_pkt->nb_segs + nb_ctx); tx_last = (uint16_t)(tx_id + nb_used - 1); /* Circular ring */ if (tx_last >= txq->nb_tx_desc) tx_last = (uint16_t)(tx_last - txq->nb_tx_desc); if (nb_used > txq->nb_tx_free) { if (i40e_xmit_cleanup(txq) != 0) { if (nb_tx == 0) return 0; goto end_of_tx; } if (unlikely(nb_used > txq->tx_rs_thresh)) { while (nb_used > txq->nb_tx_free) { if (i40e_xmit_cleanup(txq) != 0) { if (nb_tx == 0) return 0; goto end_of_tx; } } } } /* Descriptor based VLAN insertion */ if (ol_flags & (PKT_TX_VLAN_PKT | PKT_TX_QINQ_PKT)) { td_cmd |= I40E_TX_DESC_CMD_IL2TAG1; td_tag = tx_pkt->vlan_tci; } /* Always enable CRC offload insertion */ td_cmd |= I40E_TX_DESC_CMD_ICRC; /* Fill in tunneling parameters if necessary */ cd_tunneling_params = 0; if (ol_flags & PKT_TX_TUNNEL_MASK) i40e_parse_tunneling_params(ol_flags, tx_offload, &cd_tunneling_params); /* Enable checksum offloading */ if (ol_flags & I40E_TX_CKSUM_OFFLOAD_MASK) i40e_txd_enable_checksum(ol_flags, &td_cmd, &td_offset, tx_offload); if (nb_ctx) { /* Setup TX context descriptor if required */ volatile struct i40e_tx_context_desc *ctx_txd = (volatile struct i40e_tx_context_desc *)\ &txr[tx_id]; uint16_t cd_l2tag2 = 0; uint64_t cd_type_cmd_tso_mss = I40E_TX_DESC_DTYPE_CONTEXT; txn = &sw_ring[txe->next_id]; RTE_MBUF_PREFETCH_TO_FREE(txn->mbuf); if (txe->mbuf != NULL) { rte_pktmbuf_free_seg(txe->mbuf); txe->mbuf = NULL; } /* TSO enabled means no timestamp */ if (ol_flags & PKT_TX_TCP_SEG) cd_type_cmd_tso_mss |= i40e_set_tso_ctx(tx_pkt, tx_offload); else { #ifdef RTE_LIBRTE_IEEE1588 if (ol_flags & PKT_TX_IEEE1588_TMST) cd_type_cmd_tso_mss |= ((uint64_t)I40E_TX_CTX_DESC_TSYN << I40E_TXD_CTX_QW1_CMD_SHIFT); #endif } ctx_txd->tunneling_params = rte_cpu_to_le_32(cd_tunneling_params); if (ol_flags & PKT_TX_QINQ_PKT) { cd_l2tag2 = tx_pkt->vlan_tci_outer; cd_type_cmd_tso_mss |= ((uint64_t)I40E_TX_CTX_DESC_IL2TAG2 << I40E_TXD_CTX_QW1_CMD_SHIFT); } ctx_txd->l2tag2 = rte_cpu_to_le_16(cd_l2tag2); ctx_txd->type_cmd_tso_mss = rte_cpu_to_le_64(cd_type_cmd_tso_mss); PMD_TX_LOG(DEBUG, "mbuf: %p, TCD[%u]:\n" "tunneling_params: %#x;\n" "l2tag2: %#hx;\n" "rsvd: %#hx;\n" "type_cmd_tso_mss: %#"PRIx64";\n", tx_pkt, tx_id, ctx_txd->tunneling_params, ctx_txd->l2tag2, ctx_txd->rsvd, ctx_txd->type_cmd_tso_mss); txe->last_id = tx_last; tx_id = txe->next_id; txe = txn; } m_seg = tx_pkt; do { txd = &txr[tx_id]; txn = &sw_ring[txe->next_id]; if (txe->mbuf) rte_pktmbuf_free_seg(txe->mbuf); txe->mbuf = m_seg; /* Setup TX Descriptor */ slen = m_seg->data_len; buf_dma_addr = rte_mbuf_data_iova(m_seg); PMD_TX_LOG(DEBUG, "mbuf: %p, TDD[%u]:\n" "buf_dma_addr: %#"PRIx64";\n" "td_cmd: %#x;\n" "td_offset: %#x;\n" "td_len: %u;\n" "td_tag: %#x;\n", tx_pkt, tx_id, buf_dma_addr, td_cmd, td_offset, slen, td_tag); txd->buffer_addr = rte_cpu_to_le_64(buf_dma_addr); txd->cmd_type_offset_bsz = i40e_build_ctob(td_cmd, td_offset, slen, td_tag); txe->last_id = tx_last; tx_id = txe->next_id; txe = txn; m_seg = m_seg->next; } while (m_seg != NULL); /* The last packet data descriptor needs End Of Packet (EOP) */ td_cmd |= I40E_TX_DESC_CMD_EOP; txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used); txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used); if (txq->nb_tx_used >= txq->tx_rs_thresh) { PMD_TX_FREE_LOG(DEBUG, "Setting RS bit on TXD id=" "%4u (port=%d queue=%d)", tx_last, txq->port_id, txq->queue_id); td_cmd |= I40E_TX_DESC_CMD_RS; /* Update txq RS bit counters */ txq->nb_tx_used = 0; } txd->cmd_type_offset_bsz |= rte_cpu_to_le_64(((uint64_t)td_cmd) << I40E_TXD_QW1_CMD_SHIFT); } end_of_tx: rte_wmb(); PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u", (unsigned) txq->port_id, (unsigned) txq->queue_id, (unsigned) tx_id, (unsigned) nb_tx); I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, tx_id); txq->tx_tail = tx_id; return nb_tx; } static __rte_always_inline int i40e_tx_free_bufs(struct i40e_tx_queue *txq) { struct i40e_tx_entry *txep; uint16_t i; if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz & rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) != rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)) return 0; txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]); for (i = 0; i < txq->tx_rs_thresh; i++) rte_prefetch0((txep + i)->mbuf); if (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE) { for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) { rte_mempool_put(txep->mbuf->pool, txep->mbuf); txep->mbuf = NULL; } } else { for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) { rte_pktmbuf_free_seg(txep->mbuf); txep->mbuf = NULL; } } txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh); txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh); if (txq->tx_next_dd >= txq->nb_tx_desc) txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1); return txq->tx_rs_thresh; } /* Populate 4 descriptors with data from 4 mbufs */ static inline void tx4(volatile struct i40e_tx_desc *txdp, struct rte_mbuf **pkts) { uint64_t dma_addr; uint32_t i; for (i = 0; i < 4; i++, txdp++, pkts++) { dma_addr = rte_mbuf_data_iova(*pkts); txdp->buffer_addr = rte_cpu_to_le_64(dma_addr); txdp->cmd_type_offset_bsz = i40e_build_ctob((uint32_t)I40E_TD_CMD, 0, (*pkts)->data_len, 0); } } /* Populate 1 descriptor with data from 1 mbuf */ static inline void tx1(volatile struct i40e_tx_desc *txdp, struct rte_mbuf **pkts) { uint64_t dma_addr; dma_addr = rte_mbuf_data_iova(*pkts); txdp->buffer_addr = rte_cpu_to_le_64(dma_addr); txdp->cmd_type_offset_bsz = i40e_build_ctob((uint32_t)I40E_TD_CMD, 0, (*pkts)->data_len, 0); } /* Fill hardware descriptor ring with mbuf data */ static inline void i40e_tx_fill_hw_ring(struct i40e_tx_queue *txq, struct rte_mbuf **pkts, uint16_t nb_pkts) { volatile struct i40e_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]); struct i40e_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]); const int N_PER_LOOP = 4; const int N_PER_LOOP_MASK = N_PER_LOOP - 1; int mainpart, leftover; int i, j; mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK)); leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK)); for (i = 0; i < mainpart; i += N_PER_LOOP) { for (j = 0; j < N_PER_LOOP; ++j) { (txep + i + j)->mbuf = *(pkts + i + j); } tx4(txdp + i, pkts + i); } if (unlikely(leftover > 0)) { for (i = 0; i < leftover; ++i) { (txep + mainpart + i)->mbuf = *(pkts + mainpart + i); tx1(txdp + mainpart + i, pkts + mainpart + i); } } } static inline uint16_t tx_xmit_pkts(struct i40e_tx_queue *txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) { volatile struct i40e_tx_desc *txr = txq->tx_ring; uint16_t n = 0; /** * Begin scanning the H/W ring for done descriptors when the number * of available descriptors drops below tx_free_thresh. For each done * descriptor, free the associated buffer. */ if (txq->nb_tx_free < txq->tx_free_thresh) i40e_tx_free_bufs(txq); /* Use available descriptor only */ nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts); if (unlikely(!nb_pkts)) return 0; txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts); if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) { n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail); i40e_tx_fill_hw_ring(txq, tx_pkts, n); txr[txq->tx_next_rs].cmd_type_offset_bsz |= rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) << I40E_TXD_QW1_CMD_SHIFT); txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); txq->tx_tail = 0; } /* Fill hardware descriptor ring with mbuf data */ i40e_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n)); txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n)); /* Determin if RS bit needs to be set */ if (txq->tx_tail > txq->tx_next_rs) { txr[txq->tx_next_rs].cmd_type_offset_bsz |= rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) << I40E_TXD_QW1_CMD_SHIFT); txq->tx_next_rs = (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh); if (txq->tx_next_rs >= txq->nb_tx_desc) txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); } if (txq->tx_tail >= txq->nb_tx_desc) txq->tx_tail = 0; /* Update the tx tail register */ rte_wmb(); I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, txq->tx_tail); return nb_pkts; } static uint16_t i40e_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) { uint16_t nb_tx = 0; if (likely(nb_pkts <= I40E_TX_MAX_BURST)) return tx_xmit_pkts((struct i40e_tx_queue *)tx_queue, tx_pkts, nb_pkts); while (nb_pkts) { uint16_t ret, num = (uint16_t)RTE_MIN(nb_pkts, I40E_TX_MAX_BURST); ret = tx_xmit_pkts((struct i40e_tx_queue *)tx_queue, &tx_pkts[nb_tx], num); nb_tx = (uint16_t)(nb_tx + ret); nb_pkts = (uint16_t)(nb_pkts - ret); if (ret < num) break; } return nb_tx; } static uint16_t i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) { uint16_t nb_tx = 0; struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue; while (nb_pkts) { uint16_t ret, num; num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh); ret = i40e_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num); nb_tx += ret; nb_pkts -= ret; if (ret < num) break; } return nb_tx; } /********************************************************************* * * TX prep functions * **********************************************************************/ uint16_t i40e_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) { int i, ret; uint64_t ol_flags; struct rte_mbuf *m; for (i = 0; i < nb_pkts; i++) { m = tx_pkts[i]; ol_flags = m->ol_flags; /* Check for m->nb_segs to not exceed the limits. */ if (!(ol_flags & PKT_TX_TCP_SEG)) { if (m->nb_segs > I40E_TX_MAX_MTU_SEG || m->pkt_len > I40E_FRAME_SIZE_MAX) { rte_errno = -EINVAL; return i; } } else if (m->nb_segs > I40E_TX_MAX_SEG || m->tso_segsz < I40E_MIN_TSO_MSS || m->tso_segsz > I40E_MAX_TSO_MSS || m->pkt_len > I40E_TSO_FRAME_SIZE_MAX) { /* MSS outside the range (256B - 9674B) are considered * malicious */ rte_errno = -EINVAL; return i; } if (ol_flags & I40E_TX_OFFLOAD_NOTSUP_MASK) { rte_errno = -ENOTSUP; return i; } /* check the size of packet */ if (m->pkt_len < I40E_TX_MIN_PKT_LEN) { rte_errno = -EINVAL; return i; } #ifdef RTE_LIBRTE_ETHDEV_DEBUG ret = rte_validate_tx_offload(m); if (ret != 0) { rte_errno = ret; return i; } #endif ret = rte_net_intel_cksum_prepare(m); if (ret != 0) { rte_errno = ret; return i; } } return i; } /* * Find the VSI the queue belongs to. 'queue_idx' is the queue index * application used, which assume having sequential ones. But from driver's * perspective, it's different. For example, q0 belongs to FDIR VSI, q1-q64 * to MAIN VSI, , q65-96 to SRIOV VSIs, q97-128 to VMDQ VSIs. For application * running on host, q1-64 and q97-128 can be used, total 96 queues. They can * use queue_idx from 0 to 95 to access queues, while real queue would be * different. This function will do a queue mapping to find VSI the queue * belongs to. */ static struct i40e_vsi* i40e_pf_get_vsi_by_qindex(struct i40e_pf *pf, uint16_t queue_idx) { /* the queue in MAIN VSI range */ if (queue_idx < pf->main_vsi->nb_qps) return pf->main_vsi; queue_idx -= pf->main_vsi->nb_qps; /* queue_idx is greater than VMDQ VSIs range */ if (queue_idx > pf->nb_cfg_vmdq_vsi * pf->vmdq_nb_qps - 1) { PMD_INIT_LOG(ERR, "queue_idx out of range. VMDQ configured?"); return NULL; } return pf->vmdq[queue_idx / pf->vmdq_nb_qps].vsi; } static uint16_t i40e_get_queue_offset_by_qindex(struct i40e_pf *pf, uint16_t queue_idx) { /* the queue in MAIN VSI range */ if (queue_idx < pf->main_vsi->nb_qps) return queue_idx; /* It's VMDQ queues */ queue_idx -= pf->main_vsi->nb_qps; if (pf->nb_cfg_vmdq_vsi) return queue_idx % pf->vmdq_nb_qps; else { PMD_INIT_LOG(ERR, "Fail to get queue offset"); return (uint16_t)(-1); } } int i40e_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) { struct i40e_rx_queue *rxq; int err; struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); PMD_INIT_FUNC_TRACE(); rxq = dev->data->rx_queues[rx_queue_id]; err = i40e_alloc_rx_queue_mbufs(rxq); if (err) { PMD_DRV_LOG(ERR, "Failed to allocate RX queue mbuf"); return err; } rte_wmb(); /* Init the RX tail regieter. */ I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1); err = i40e_switch_rx_queue(hw, rxq->reg_idx, TRUE); if (err) { PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on", rx_queue_id); i40e_rx_queue_release_mbufs(rxq); i40e_reset_rx_queue(rxq); return err; } dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; return 0; } int i40e_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) { struct i40e_rx_queue *rxq; int err; struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); rxq = dev->data->rx_queues[rx_queue_id]; /* * rx_queue_id is queue id application refers to, while * rxq->reg_idx is the real queue index. */ err = i40e_switch_rx_queue(hw, rxq->reg_idx, FALSE); if (err) { PMD_DRV_LOG(ERR, "Failed to switch RX queue %u off", rx_queue_id); return err; } i40e_rx_queue_release_mbufs(rxq); i40e_reset_rx_queue(rxq); dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; return 0; } int i40e_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) { int err; struct i40e_tx_queue *txq; struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); PMD_INIT_FUNC_TRACE(); txq = dev->data->tx_queues[tx_queue_id]; /* * tx_queue_id is queue id application refers to, while * rxq->reg_idx is the real queue index. */ err = i40e_switch_tx_queue(hw, txq->reg_idx, TRUE); if (err) { PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on", tx_queue_id); return err; } dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; return 0; } int i40e_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) { struct i40e_tx_queue *txq; int err; struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); txq = dev->data->tx_queues[tx_queue_id]; /* * tx_queue_id is queue id application refers to, while * txq->reg_idx is the real queue index. */ err = i40e_switch_tx_queue(hw, txq->reg_idx, FALSE); if (err) { PMD_DRV_LOG(ERR, "Failed to switch TX queue %u of", tx_queue_id); return err; } i40e_tx_queue_release_mbufs(txq); i40e_reset_tx_queue(txq); dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; return 0; } const uint32_t * i40e_dev_supported_ptypes_get(struct rte_eth_dev *dev) { static const uint32_t ptypes[] = { /* refers to i40e_rxd_pkt_type_mapping() */ RTE_PTYPE_L2_ETHER, RTE_PTYPE_L2_ETHER_TIMESYNC, RTE_PTYPE_L2_ETHER_LLDP, RTE_PTYPE_L2_ETHER_ARP, RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, RTE_PTYPE_L4_FRAG, RTE_PTYPE_L4_ICMP, RTE_PTYPE_L4_NONFRAG, RTE_PTYPE_L4_SCTP, RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP, RTE_PTYPE_TUNNEL_GRENAT, RTE_PTYPE_TUNNEL_IP, RTE_PTYPE_INNER_L2_ETHER, RTE_PTYPE_INNER_L2_ETHER_VLAN, RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, RTE_PTYPE_INNER_L4_FRAG, RTE_PTYPE_INNER_L4_ICMP, RTE_PTYPE_INNER_L4_NONFRAG, RTE_PTYPE_INNER_L4_SCTP, RTE_PTYPE_INNER_L4_TCP, RTE_PTYPE_INNER_L4_UDP, RTE_PTYPE_UNKNOWN }; if (dev->rx_pkt_burst == i40e_recv_pkts || #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC dev->rx_pkt_burst == i40e_recv_pkts_bulk_alloc || #endif dev->rx_pkt_burst == i40e_recv_scattered_pkts || dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec || dev->rx_pkt_burst == i40e_recv_pkts_vec || dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx2 || dev->rx_pkt_burst == i40e_recv_pkts_vec_avx2) return ptypes; return NULL; } static int i40e_dev_first_queue(uint16_t idx, void **queues, int num) { uint16_t i; for (i = 0; i < num; i++) { if (i != idx && queues[i]) return 0; } return 1; } static int i40e_dev_rx_queue_setup_runtime(struct rte_eth_dev *dev, struct i40e_rx_queue *rxq) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); int use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq); uint16_t buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM); int use_scattered_rx = ((rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size); if (i40e_rx_queue_init(rxq) != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failed to do RX queue initialization"); return -EINVAL; } if (i40e_dev_first_queue(rxq->queue_id, dev->data->rx_queues, dev->data->nb_rx_queues)) { /** * If it is the first queue to setup, * set all flags to default and call * i40e_set_rx_function. */ ad->rx_bulk_alloc_allowed = true; ad->rx_vec_allowed = true; dev->data->scattered_rx = use_scattered_rx; if (use_def_burst_func) ad->rx_bulk_alloc_allowed = false; i40e_set_rx_function(dev); return 0; } else if (ad->rx_vec_allowed && !rte_is_power_of_2(rxq->nb_rx_desc)) { PMD_DRV_LOG(ERR, "Vector mode is allowed, but descriptor" " number %d of queue %d isn't power of 2", rxq->nb_rx_desc, rxq->queue_id); return -EINVAL; } /* check bulk alloc conflict */ if (ad->rx_bulk_alloc_allowed && use_def_burst_func) { PMD_DRV_LOG(ERR, "Can't use default burst."); return -EINVAL; } /* check scatterred conflict */ if (!dev->data->scattered_rx && use_scattered_rx) { PMD_DRV_LOG(ERR, "Scattered rx is required."); return -EINVAL; } /* check vector conflict */ if (ad->rx_vec_allowed && i40e_rxq_vec_setup(rxq)) { PMD_DRV_LOG(ERR, "Failed vector rx setup."); return -EINVAL; } return 0; } int i40e_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, uint16_t nb_desc, unsigned int socket_id, const struct rte_eth_rxconf *rx_conf, struct rte_mempool *mp) { struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); struct i40e_vsi *vsi; struct i40e_pf *pf = NULL; struct i40e_vf *vf = NULL; struct i40e_rx_queue *rxq; const struct rte_memzone *rz; uint32_t ring_size; uint16_t len, i; uint16_t reg_idx, base, bsf, tc_mapping; int q_offset, use_def_burst_func = 1; uint64_t offloads; offloads = rx_conf->offloads | dev->data->dev_conf.rxmode.offloads; if (hw->mac.type == I40E_MAC_VF || hw->mac.type == I40E_MAC_X722_VF) { vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); vsi = &vf->vsi; if (!vsi) return -EINVAL; reg_idx = queue_idx; } else { pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); vsi = i40e_pf_get_vsi_by_qindex(pf, queue_idx); if (!vsi) return -EINVAL; q_offset = i40e_get_queue_offset_by_qindex(pf, queue_idx); if (q_offset < 0) return -EINVAL; reg_idx = vsi->base_queue + q_offset; } if (nb_desc % I40E_ALIGN_RING_DESC != 0 || (nb_desc > I40E_MAX_RING_DESC) || (nb_desc < I40E_MIN_RING_DESC)) { PMD_DRV_LOG(ERR, "Number (%u) of receive descriptors is " "invalid", nb_desc); return -EINVAL; } /* Free memory if needed */ if (dev->data->rx_queues[queue_idx]) { i40e_dev_rx_queue_release(dev->data->rx_queues[queue_idx]); dev->data->rx_queues[queue_idx] = NULL; } /* Allocate the rx queue data structure */ rxq = rte_zmalloc_socket("i40e rx queue", sizeof(struct i40e_rx_queue), RTE_CACHE_LINE_SIZE, socket_id); if (!rxq) { PMD_DRV_LOG(ERR, "Failed to allocate memory for " "rx queue data structure"); return -ENOMEM; } rxq->mp = mp; rxq->nb_rx_desc = nb_desc; rxq->rx_free_thresh = rx_conf->rx_free_thresh; rxq->queue_id = queue_idx; rxq->reg_idx = reg_idx; rxq->port_id = dev->data->port_id; if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC) rxq->crc_len = ETHER_CRC_LEN; else rxq->crc_len = 0; rxq->drop_en = rx_conf->rx_drop_en; rxq->vsi = vsi; rxq->rx_deferred_start = rx_conf->rx_deferred_start; rxq->offloads = offloads; /* Allocate the maximun number of RX ring hardware descriptor. */ len = I40E_MAX_RING_DESC; /** * Allocating a little more memory because vectorized/bulk_alloc Rx * functions doesn't check boundaries each time. */ len += RTE_PMD_I40E_RX_MAX_BURST; ring_size = RTE_ALIGN(len * sizeof(union i40e_rx_desc), I40E_DMA_MEM_ALIGN); rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx, ring_size, I40E_RING_BASE_ALIGN, socket_id); if (!rz) { i40e_dev_rx_queue_release(rxq); PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for RX"); return -ENOMEM; } /* Zero all the descriptors in the ring. */ memset(rz->addr, 0, ring_size); rxq->rx_ring_phys_addr = rz->iova; rxq->rx_ring = (union i40e_rx_desc *)rz->addr; len = (uint16_t)(nb_desc + RTE_PMD_I40E_RX_MAX_BURST); /* Allocate the software ring. */ rxq->sw_ring = rte_zmalloc_socket("i40e rx sw ring", sizeof(struct i40e_rx_entry) * len, RTE_CACHE_LINE_SIZE, socket_id); if (!rxq->sw_ring) { i40e_dev_rx_queue_release(rxq); PMD_DRV_LOG(ERR, "Failed to allocate memory for SW ring"); return -ENOMEM; } i40e_reset_rx_queue(rxq); rxq->q_set = TRUE; for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { if (!(vsi->enabled_tc & (1 << i))) continue; tc_mapping = rte_le_to_cpu_16(vsi->info.tc_mapping[i]); base = (tc_mapping & I40E_AQ_VSI_TC_QUE_OFFSET_MASK) >> I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT; bsf = (tc_mapping & I40E_AQ_VSI_TC_QUE_NUMBER_MASK) >> I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT; if (queue_idx >= base && queue_idx < (base + BIT(bsf))) rxq->dcb_tc = i; } if (dev->data->dev_started) { if (i40e_dev_rx_queue_setup_runtime(dev, rxq)) { i40e_dev_rx_queue_release(rxq); return -EINVAL; } } else { use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq); if (!use_def_burst_func) { #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are " "satisfied. Rx Burst Bulk Alloc function will be " "used on port=%d, queue=%d.", rxq->port_id, rxq->queue_id); #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */ } else { PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are " "not satisfied, Scattered Rx is requested, " "or RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC is " "not enabled on port=%d, queue=%d.", rxq->port_id, rxq->queue_id); ad->rx_bulk_alloc_allowed = false; } } dev->data->rx_queues[queue_idx] = rxq; return 0; } void i40e_dev_rx_queue_release(void *rxq) { struct i40e_rx_queue *q = (struct i40e_rx_queue *)rxq; if (!q) { PMD_DRV_LOG(DEBUG, "Pointer to rxq is NULL"); return; } i40e_rx_queue_release_mbufs(q); rte_free(q->sw_ring); rte_free(q); } uint32_t i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id) { #define I40E_RXQ_SCAN_INTERVAL 4 volatile union i40e_rx_desc *rxdp; struct i40e_rx_queue *rxq; uint16_t desc = 0; rxq = dev->data->rx_queues[rx_queue_id]; rxdp = &(rxq->rx_ring[rxq->rx_tail]); while ((desc < rxq->nb_rx_desc) && ((rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT) & (1 << I40E_RX_DESC_STATUS_DD_SHIFT)) { /** * Check the DD bit of a rx descriptor of each 4 in a group, * to avoid checking too frequently and downgrading performance * too much. */ desc += I40E_RXQ_SCAN_INTERVAL; rxdp += I40E_RXQ_SCAN_INTERVAL; if (rxq->rx_tail + desc >= rxq->nb_rx_desc) rxdp = &(rxq->rx_ring[rxq->rx_tail + desc - rxq->nb_rx_desc]); } return desc; } int i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) { volatile union i40e_rx_desc *rxdp; struct i40e_rx_queue *rxq = rx_queue; uint16_t desc; int ret; if (unlikely(offset >= rxq->nb_rx_desc)) { PMD_DRV_LOG(ERR, "Invalid RX descriptor id %u", offset); return 0; } desc = rxq->rx_tail + offset; if (desc >= rxq->nb_rx_desc) desc -= rxq->nb_rx_desc; rxdp = &(rxq->rx_ring[desc]); ret = !!(((rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) & I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT) & (1 << I40E_RX_DESC_STATUS_DD_SHIFT)); return ret; } int i40e_dev_rx_descriptor_status(void *rx_queue, uint16_t offset) { struct i40e_rx_queue *rxq = rx_queue; volatile uint64_t *status; uint64_t mask; uint32_t desc; if (unlikely(offset >= rxq->nb_rx_desc)) return -EINVAL; if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold) return RTE_ETH_RX_DESC_UNAVAIL; desc = rxq->rx_tail + offset; if (desc >= rxq->nb_rx_desc) desc -= rxq->nb_rx_desc; status = &rxq->rx_ring[desc].wb.qword1.status_error_len; mask = rte_le_to_cpu_64((1ULL << I40E_RX_DESC_STATUS_DD_SHIFT) << I40E_RXD_QW1_STATUS_SHIFT); if (*status & mask) return RTE_ETH_RX_DESC_DONE; return RTE_ETH_RX_DESC_AVAIL; } int i40e_dev_tx_descriptor_status(void *tx_queue, uint16_t offset) { struct i40e_tx_queue *txq = tx_queue; volatile uint64_t *status; uint64_t mask, expect; uint32_t desc; if (unlikely(offset >= txq->nb_tx_desc)) return -EINVAL; desc = txq->tx_tail + offset; /* go to next desc that has the RS bit */ desc = ((desc + txq->tx_rs_thresh - 1) / txq->tx_rs_thresh) * txq->tx_rs_thresh; if (desc >= txq->nb_tx_desc) { desc -= txq->nb_tx_desc; if (desc >= txq->nb_tx_desc) desc -= txq->nb_tx_desc; } status = &txq->tx_ring[desc].cmd_type_offset_bsz; mask = rte_le_to_cpu_64(I40E_TXD_QW1_DTYPE_MASK); expect = rte_cpu_to_le_64( I40E_TX_DESC_DTYPE_DESC_DONE << I40E_TXD_QW1_DTYPE_SHIFT); if ((*status & mask) == expect) return RTE_ETH_TX_DESC_DONE; return RTE_ETH_TX_DESC_FULL; } static int i40e_dev_tx_queue_setup_runtime(struct rte_eth_dev *dev, struct i40e_tx_queue *txq) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); if (i40e_tx_queue_init(txq) != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failed to do TX queue initialization"); return -EINVAL; } if (i40e_dev_first_queue(txq->queue_id, dev->data->tx_queues, dev->data->nb_tx_queues)) { /** * If it is the first queue to setup, * set all flags and call * i40e_set_tx_function. */ i40e_set_tx_function_flag(dev, txq); i40e_set_tx_function(dev); return 0; } /* check vector conflict */ if (ad->tx_vec_allowed) { if (txq->tx_rs_thresh > RTE_I40E_TX_MAX_FREE_BUF_SZ || i40e_txq_vec_setup(txq)) { PMD_DRV_LOG(ERR, "Failed vector tx setup."); return -EINVAL; } } /* check simple tx conflict */ if (ad->tx_simple_allowed) { if ((txq->offloads & ~DEV_TX_OFFLOAD_MBUF_FAST_FREE) != 0 || txq->tx_rs_thresh < RTE_PMD_I40E_TX_MAX_BURST) { PMD_DRV_LOG(ERR, "No-simple tx is required."); return -EINVAL; } } return 0; } int i40e_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, uint16_t nb_desc, unsigned int socket_id, const struct rte_eth_txconf *tx_conf) { struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct i40e_vsi *vsi; struct i40e_pf *pf = NULL; struct i40e_vf *vf = NULL; struct i40e_tx_queue *txq; const struct rte_memzone *tz; uint32_t ring_size; uint16_t tx_rs_thresh, tx_free_thresh; uint16_t reg_idx, i, base, bsf, tc_mapping; int q_offset; uint64_t offloads; offloads = tx_conf->offloads | dev->data->dev_conf.txmode.offloads; if (hw->mac.type == I40E_MAC_VF || hw->mac.type == I40E_MAC_X722_VF) { vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); vsi = &vf->vsi; if (!vsi) return -EINVAL; reg_idx = queue_idx; } else { pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); vsi = i40e_pf_get_vsi_by_qindex(pf, queue_idx); if (!vsi) return -EINVAL; q_offset = i40e_get_queue_offset_by_qindex(pf, queue_idx); if (q_offset < 0) return -EINVAL; reg_idx = vsi->base_queue + q_offset; } if (nb_desc % I40E_ALIGN_RING_DESC != 0 || (nb_desc > I40E_MAX_RING_DESC) || (nb_desc < I40E_MIN_RING_DESC)) { PMD_DRV_LOG(ERR, "Number (%u) of transmit descriptors is " "invalid", nb_desc); return -EINVAL; } /** * The following two parameters control the setting of the RS bit on * transmit descriptors. TX descriptors will have their RS bit set * after txq->tx_rs_thresh descriptors have been used. The TX * descriptor ring will be cleaned after txq->tx_free_thresh * descriptors are used or if the number of descriptors required to * transmit a packet is greater than the number of free TX descriptors. * * The following constraints must be satisfied: * - tx_rs_thresh must be greater than 0. * - tx_rs_thresh must be less than the size of the ring minus 2. * - tx_rs_thresh must be less than or equal to tx_free_thresh. * - tx_rs_thresh must be a divisor of the ring size. * - tx_free_thresh must be greater than 0. * - tx_free_thresh must be less than the size of the ring minus 3. * * One descriptor in the TX ring is used as a sentinel to avoid a H/W * race condition, hence the maximum threshold constraints. When set * to zero use default values. */ tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ? tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH); tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ? tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH); if (tx_rs_thresh >= (nb_desc - 2)) { PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the " "number of TX descriptors minus 2. " "(tx_rs_thresh=%u port=%d queue=%d)", (unsigned int)tx_rs_thresh, (int)dev->data->port_id, (int)queue_idx); return I40E_ERR_PARAM; } if (tx_free_thresh >= (nb_desc - 3)) { PMD_INIT_LOG(ERR, "tx_free_thresh must be less than the " "number of TX descriptors minus 3. " "(tx_free_thresh=%u port=%d queue=%d)", (unsigned int)tx_free_thresh, (int)dev->data->port_id, (int)queue_idx); return I40E_ERR_PARAM; } if (tx_rs_thresh > tx_free_thresh) { PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or " "equal to tx_free_thresh. (tx_free_thresh=%u" " tx_rs_thresh=%u port=%d queue=%d)", (unsigned int)tx_free_thresh, (unsigned int)tx_rs_thresh, (int)dev->data->port_id, (int)queue_idx); return I40E_ERR_PARAM; } if ((nb_desc % tx_rs_thresh) != 0) { PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the " "number of TX descriptors. (tx_rs_thresh=%u" " port=%d queue=%d)", (unsigned int)tx_rs_thresh, (int)dev->data->port_id, (int)queue_idx); return I40E_ERR_PARAM; } if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) { PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if " "tx_rs_thresh is greater than 1. " "(tx_rs_thresh=%u port=%d queue=%d)", (unsigned int)tx_rs_thresh, (int)dev->data->port_id, (int)queue_idx); return I40E_ERR_PARAM; } /* Free memory if needed. */ if (dev->data->tx_queues[queue_idx]) { i40e_dev_tx_queue_release(dev->data->tx_queues[queue_idx]); dev->data->tx_queues[queue_idx] = NULL; } /* Allocate the TX queue data structure. */ txq = rte_zmalloc_socket("i40e tx queue", sizeof(struct i40e_tx_queue), RTE_CACHE_LINE_SIZE, socket_id); if (!txq) { PMD_DRV_LOG(ERR, "Failed to allocate memory for " "tx queue structure"); return -ENOMEM; } /* Allocate TX hardware ring descriptors. */ ring_size = sizeof(struct i40e_tx_desc) * I40E_MAX_RING_DESC; ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN); tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx, ring_size, I40E_RING_BASE_ALIGN, socket_id); if (!tz) { i40e_dev_tx_queue_release(txq); PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for TX"); return -ENOMEM; } txq->nb_tx_desc = nb_desc; txq->tx_rs_thresh = tx_rs_thresh; txq->tx_free_thresh = tx_free_thresh; txq->pthresh = tx_conf->tx_thresh.pthresh; txq->hthresh = tx_conf->tx_thresh.hthresh; txq->wthresh = tx_conf->tx_thresh.wthresh; txq->queue_id = queue_idx; txq->reg_idx = reg_idx; txq->port_id = dev->data->port_id; txq->offloads = offloads; txq->vsi = vsi; txq->tx_deferred_start = tx_conf->tx_deferred_start; txq->tx_ring_phys_addr = tz->iova; txq->tx_ring = (struct i40e_tx_desc *)tz->addr; /* Allocate software ring */ txq->sw_ring = rte_zmalloc_socket("i40e tx sw ring", sizeof(struct i40e_tx_entry) * nb_desc, RTE_CACHE_LINE_SIZE, socket_id); if (!txq->sw_ring) { i40e_dev_tx_queue_release(txq); PMD_DRV_LOG(ERR, "Failed to allocate memory for SW TX ring"); return -ENOMEM; } i40e_reset_tx_queue(txq); txq->q_set = TRUE; for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { if (!(vsi->enabled_tc & (1 << i))) continue; tc_mapping = rte_le_to_cpu_16(vsi->info.tc_mapping[i]); base = (tc_mapping & I40E_AQ_VSI_TC_QUE_OFFSET_MASK) >> I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT; bsf = (tc_mapping & I40E_AQ_VSI_TC_QUE_NUMBER_MASK) >> I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT; if (queue_idx >= base && queue_idx < (base + BIT(bsf))) txq->dcb_tc = i; } if (dev->data->dev_started) { if (i40e_dev_tx_queue_setup_runtime(dev, txq)) { i40e_dev_tx_queue_release(txq); return -EINVAL; } } else { /** * Use a simple TX queue without offloads or * multi segs if possible */ i40e_set_tx_function_flag(dev, txq); } dev->data->tx_queues[queue_idx] = txq; return 0; } void i40e_dev_tx_queue_release(void *txq) { struct i40e_tx_queue *q = (struct i40e_tx_queue *)txq; if (!q) { PMD_DRV_LOG(DEBUG, "Pointer to TX queue is NULL"); return; } i40e_tx_queue_release_mbufs(q); rte_free(q->sw_ring); rte_free(q); } const struct rte_memzone * i40e_memzone_reserve(const char *name, uint32_t len, int socket_id) { const struct rte_memzone *mz; mz = rte_memzone_lookup(name); if (mz) return mz; mz = rte_memzone_reserve_aligned(name, len, socket_id, RTE_MEMZONE_IOVA_CONTIG, I40E_RING_BASE_ALIGN); return mz; } void i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq) { uint16_t i; /* SSE Vector driver has a different way of releasing mbufs. */ if (rxq->rx_using_sse) { i40e_rx_queue_release_mbufs_vec(rxq); return; } if (!rxq->sw_ring) { PMD_DRV_LOG(DEBUG, "Pointer to sw_ring is NULL"); return; } for (i = 0; i < rxq->nb_rx_desc; i++) { if (rxq->sw_ring[i].mbuf) { rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf); rxq->sw_ring[i].mbuf = NULL; } } #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC if (rxq->rx_nb_avail == 0) return; for (i = 0; i < rxq->rx_nb_avail; i++) { struct rte_mbuf *mbuf; mbuf = rxq->rx_stage[rxq->rx_next_avail + i]; rte_pktmbuf_free_seg(mbuf); } rxq->rx_nb_avail = 0; #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */ } void i40e_reset_rx_queue(struct i40e_rx_queue *rxq) { unsigned i; uint16_t len; if (!rxq) { PMD_DRV_LOG(DEBUG, "Pointer to rxq is NULL"); return; } #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC if (check_rx_burst_bulk_alloc_preconditions(rxq) == 0) len = (uint16_t)(rxq->nb_rx_desc + RTE_PMD_I40E_RX_MAX_BURST); else #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */ len = rxq->nb_rx_desc; for (i = 0; i < len * sizeof(union i40e_rx_desc); i++) ((volatile char *)rxq->rx_ring)[i] = 0; memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf)); for (i = 0; i < RTE_PMD_I40E_RX_MAX_BURST; ++i) rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf; #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC rxq->rx_nb_avail = 0; rxq->rx_next_avail = 0; rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1); #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */ rxq->rx_tail = 0; rxq->nb_rx_hold = 0; rxq->pkt_first_seg = NULL; rxq->pkt_last_seg = NULL; rxq->rxrearm_start = 0; rxq->rxrearm_nb = 0; } void i40e_tx_queue_release_mbufs(struct i40e_tx_queue *txq) { struct rte_eth_dev *dev; uint16_t i; dev = &rte_eth_devices[txq->port_id]; if (!txq || !txq->sw_ring) { PMD_DRV_LOG(DEBUG, "Pointer to rxq or sw_ring is NULL"); return; } /** * vPMD tx will not set sw_ring's mbuf to NULL after free, * so need to free remains more carefully. */ if (dev->tx_pkt_burst == i40e_xmit_pkts_vec_avx2 || dev->tx_pkt_burst == i40e_xmit_pkts_vec) { i = txq->tx_next_dd - txq->tx_rs_thresh + 1; if (txq->tx_tail < i) { for (; i < txq->nb_tx_desc; i++) { rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf); txq->sw_ring[i].mbuf = NULL; } i = 0; } for (; i < txq->tx_tail; i++) { rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf); txq->sw_ring[i].mbuf = NULL; } } else { for (i = 0; i < txq->nb_tx_desc; i++) { if (txq->sw_ring[i].mbuf) { rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf); txq->sw_ring[i].mbuf = NULL; } } } } void i40e_reset_tx_queue(struct i40e_tx_queue *txq) { struct i40e_tx_entry *txe; uint16_t i, prev, size; if (!txq) { PMD_DRV_LOG(DEBUG, "Pointer to txq is NULL"); return; } txe = txq->sw_ring; size = sizeof(struct i40e_tx_desc) * txq->nb_tx_desc; for (i = 0; i < size; i++) ((volatile char *)txq->tx_ring)[i] = 0; prev = (uint16_t)(txq->nb_tx_desc - 1); for (i = 0; i < txq->nb_tx_desc; i++) { volatile struct i40e_tx_desc *txd = &txq->tx_ring[i]; txd->cmd_type_offset_bsz = rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE); txe[i].mbuf = NULL; txe[i].last_id = i; txe[prev].next_id = i; prev = i; } txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1); txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); txq->tx_tail = 0; txq->nb_tx_used = 0; txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1); txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1); } /* Init the TX queue in hardware */ int i40e_tx_queue_init(struct i40e_tx_queue *txq) { enum i40e_status_code err = I40E_SUCCESS; struct i40e_vsi *vsi = txq->vsi; struct i40e_hw *hw = I40E_VSI_TO_HW(vsi); uint16_t pf_q = txq->reg_idx; struct i40e_hmc_obj_txq tx_ctx; uint32_t qtx_ctl; /* clear the context structure first */ memset(&tx_ctx, 0, sizeof(tx_ctx)); tx_ctx.new_context = 1; tx_ctx.base = txq->tx_ring_phys_addr / I40E_QUEUE_BASE_ADDR_UNIT; tx_ctx.qlen = txq->nb_tx_desc; #ifdef RTE_LIBRTE_IEEE1588 tx_ctx.timesync_ena = 1; #endif tx_ctx.rdylist = rte_le_to_cpu_16(vsi->info.qs_handle[txq->dcb_tc]); if (vsi->type == I40E_VSI_FDIR) tx_ctx.fd_ena = TRUE; err = i40e_clear_lan_tx_queue_context(hw, pf_q); if (err != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failure of clean lan tx queue context"); return err; } err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx); if (err != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failure of set lan tx queue context"); return err; } /* Now associate this queue with this PCI function */ qtx_ctl = I40E_QTX_CTL_PF_QUEUE; qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) & I40E_QTX_CTL_PF_INDX_MASK); I40E_WRITE_REG(hw, I40E_QTX_CTL(pf_q), qtx_ctl); I40E_WRITE_FLUSH(hw); txq->qtx_tail = hw->hw_addr + I40E_QTX_TAIL(pf_q); return err; } int i40e_alloc_rx_queue_mbufs(struct i40e_rx_queue *rxq) { struct i40e_rx_entry *rxe = rxq->sw_ring; uint64_t dma_addr; uint16_t i; for (i = 0; i < rxq->nb_rx_desc; i++) { volatile union i40e_rx_desc *rxd; struct rte_mbuf *mbuf = rte_mbuf_raw_alloc(rxq->mp); if (unlikely(!mbuf)) { PMD_DRV_LOG(ERR, "Failed to allocate mbuf for RX"); return -ENOMEM; } rte_mbuf_refcnt_set(mbuf, 1); mbuf->next = NULL; mbuf->data_off = RTE_PKTMBUF_HEADROOM; mbuf->nb_segs = 1; mbuf->port = rxq->port_id; dma_addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf)); rxd = &rxq->rx_ring[i]; rxd->read.pkt_addr = dma_addr; rxd->read.hdr_addr = 0; #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC rxd->read.rsvd1 = 0; rxd->read.rsvd2 = 0; #endif /* RTE_LIBRTE_I40E_16BYTE_RX_DESC */ rxe[i].mbuf = mbuf; } return 0; } /* * Calculate the buffer length, and check the jumbo frame * and maximum packet length. */ static int i40e_rx_queue_config(struct i40e_rx_queue *rxq) { struct i40e_pf *pf = I40E_VSI_TO_PF(rxq->vsi); struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi); struct rte_eth_dev_data *data = pf->dev_data; uint16_t buf_size, len; buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM); switch (pf->flags & (I40E_FLAG_HEADER_SPLIT_DISABLED | I40E_FLAG_HEADER_SPLIT_ENABLED)) { case I40E_FLAG_HEADER_SPLIT_ENABLED: /* Not supported */ rxq->rx_hdr_len = RTE_ALIGN(I40E_RXBUF_SZ_1024, (1 << I40E_RXQ_CTX_HBUFF_SHIFT)); rxq->rx_buf_len = RTE_ALIGN(I40E_RXBUF_SZ_2048, (1 << I40E_RXQ_CTX_DBUFF_SHIFT)); rxq->hs_mode = i40e_header_split_enabled; break; case I40E_FLAG_HEADER_SPLIT_DISABLED: default: rxq->rx_hdr_len = 0; rxq->rx_buf_len = RTE_ALIGN_FLOOR(buf_size, (1 << I40E_RXQ_CTX_DBUFF_SHIFT)); rxq->hs_mode = i40e_header_split_none; break; } len = hw->func_caps.rx_buf_chain_len * rxq->rx_buf_len; rxq->max_pkt_len = RTE_MIN(len, data->dev_conf.rxmode.max_rx_pkt_len); if (data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) { if (rxq->max_pkt_len <= ETHER_MAX_LEN || rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) { PMD_DRV_LOG(ERR, "maximum packet length must " "be larger than %u and smaller than %u," "as jumbo frame is enabled", (uint32_t)ETHER_MAX_LEN, (uint32_t)I40E_FRAME_SIZE_MAX); return I40E_ERR_CONFIG; } } else { if (rxq->max_pkt_len < ETHER_MIN_LEN || rxq->max_pkt_len > ETHER_MAX_LEN) { PMD_DRV_LOG(ERR, "maximum packet length must be " "larger than %u and smaller than %u, " "as jumbo frame is disabled", (uint32_t)ETHER_MIN_LEN, (uint32_t)ETHER_MAX_LEN); return I40E_ERR_CONFIG; } } return 0; } /* Init the RX queue in hardware */ int i40e_rx_queue_init(struct i40e_rx_queue *rxq) { int err = I40E_SUCCESS; struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi); struct rte_eth_dev_data *dev_data = I40E_VSI_TO_DEV_DATA(rxq->vsi); uint16_t pf_q = rxq->reg_idx; uint16_t buf_size; struct i40e_hmc_obj_rxq rx_ctx; err = i40e_rx_queue_config(rxq); if (err < 0) { PMD_DRV_LOG(ERR, "Failed to config RX queue"); return err; } /* Clear the context structure first */ memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq)); rx_ctx.dbuff = rxq->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT; rx_ctx.hbuff = rxq->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT; rx_ctx.base = rxq->rx_ring_phys_addr / I40E_QUEUE_BASE_ADDR_UNIT; rx_ctx.qlen = rxq->nb_rx_desc; #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC rx_ctx.dsize = 1; #endif rx_ctx.dtype = rxq->hs_mode; if (rxq->hs_mode) rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_ALL; else rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_NONE; rx_ctx.rxmax = rxq->max_pkt_len; rx_ctx.tphrdesc_ena = 1; rx_ctx.tphwdesc_ena = 1; rx_ctx.tphdata_ena = 1; rx_ctx.tphhead_ena = 1; rx_ctx.lrxqthresh = 2; rx_ctx.crcstrip = (rxq->crc_len == 0) ? 1 : 0; rx_ctx.l2tsel = 1; /* showiv indicates if inner VLAN is stripped inside of tunnel * packet. When set it to 1, vlan information is stripped from * the inner header, but the hardware does not put it in the * descriptor. So set it zero by default. */ rx_ctx.showiv = 0; rx_ctx.prefena = 1; err = i40e_clear_lan_rx_queue_context(hw, pf_q); if (err != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failed to clear LAN RX queue context"); return err; } err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx); if (err != I40E_SUCCESS) { PMD_DRV_LOG(ERR, "Failed to set LAN RX queue context"); return err; } rxq->qrx_tail = hw->hw_addr + I40E_QRX_TAIL(pf_q); buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM); /* Check if scattered RX needs to be used. */ if ((rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) { dev_data->scattered_rx = 1; } /* Init the RX tail regieter. */ I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1); return 0; } void i40e_dev_clear_queues(struct rte_eth_dev *dev) { uint16_t i; PMD_INIT_FUNC_TRACE(); for (i = 0; i < dev->data->nb_tx_queues; i++) { if (!dev->data->tx_queues[i]) continue; i40e_tx_queue_release_mbufs(dev->data->tx_queues[i]); i40e_reset_tx_queue(dev->data->tx_queues[i]); } for (i = 0; i < dev->data->nb_rx_queues; i++) { if (!dev->data->rx_queues[i]) continue; i40e_rx_queue_release_mbufs(dev->data->rx_queues[i]); i40e_reset_rx_queue(dev->data->rx_queues[i]); } } void i40e_dev_free_queues(struct rte_eth_dev *dev) { uint16_t i; PMD_INIT_FUNC_TRACE(); for (i = 0; i < dev->data->nb_rx_queues; i++) { if (!dev->data->rx_queues[i]) continue; i40e_dev_rx_queue_release(dev->data->rx_queues[i]); dev->data->rx_queues[i] = NULL; } for (i = 0; i < dev->data->nb_tx_queues; i++) { if (!dev->data->tx_queues[i]) continue; i40e_dev_tx_queue_release(dev->data->tx_queues[i]); dev->data->tx_queues[i] = NULL; } } #define I40E_FDIR_NUM_TX_DESC I40E_MIN_RING_DESC #define I40E_FDIR_NUM_RX_DESC I40E_MIN_RING_DESC enum i40e_status_code i40e_fdir_setup_tx_resources(struct i40e_pf *pf) { struct i40e_tx_queue *txq; const struct rte_memzone *tz = NULL; uint32_t ring_size; struct rte_eth_dev *dev; if (!pf) { PMD_DRV_LOG(ERR, "PF is not available"); return I40E_ERR_BAD_PTR; } dev = pf->adapter->eth_dev; /* Allocate the TX queue data structure. */ txq = rte_zmalloc_socket("i40e fdir tx queue", sizeof(struct i40e_tx_queue), RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); if (!txq) { PMD_DRV_LOG(ERR, "Failed to allocate memory for " "tx queue structure."); return I40E_ERR_NO_MEMORY; } /* Allocate TX hardware ring descriptors. */ ring_size = sizeof(struct i40e_tx_desc) * I40E_FDIR_NUM_TX_DESC; ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN); tz = rte_eth_dma_zone_reserve(dev, "fdir_tx_ring", I40E_FDIR_QUEUE_ID, ring_size, I40E_RING_BASE_ALIGN, SOCKET_ID_ANY); if (!tz) { i40e_dev_tx_queue_release(txq); PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for TX."); return I40E_ERR_NO_MEMORY; } txq->nb_tx_desc = I40E_FDIR_NUM_TX_DESC; txq->queue_id = I40E_FDIR_QUEUE_ID; txq->reg_idx = pf->fdir.fdir_vsi->base_queue; txq->vsi = pf->fdir.fdir_vsi; txq->tx_ring_phys_addr = tz->iova; txq->tx_ring = (struct i40e_tx_desc *)tz->addr; /* * don't need to allocate software ring and reset for the fdir * program queue just set the queue has been configured. */ txq->q_set = TRUE; pf->fdir.txq = txq; return I40E_SUCCESS; } enum i40e_status_code i40e_fdir_setup_rx_resources(struct i40e_pf *pf) { struct i40e_rx_queue *rxq; const struct rte_memzone *rz = NULL; uint32_t ring_size; struct rte_eth_dev *dev; if (!pf) { PMD_DRV_LOG(ERR, "PF is not available"); return I40E_ERR_BAD_PTR; } dev = pf->adapter->eth_dev; /* Allocate the RX queue data structure. */ rxq = rte_zmalloc_socket("i40e fdir rx queue", sizeof(struct i40e_rx_queue), RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); if (!rxq) { PMD_DRV_LOG(ERR, "Failed to allocate memory for " "rx queue structure."); return I40E_ERR_NO_MEMORY; } /* Allocate RX hardware ring descriptors. */ ring_size = sizeof(union i40e_rx_desc) * I40E_FDIR_NUM_RX_DESC; ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN); rz = rte_eth_dma_zone_reserve(dev, "fdir_rx_ring", I40E_FDIR_QUEUE_ID, ring_size, I40E_RING_BASE_ALIGN, SOCKET_ID_ANY); if (!rz) { i40e_dev_rx_queue_release(rxq); PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for RX."); return I40E_ERR_NO_MEMORY; } rxq->nb_rx_desc = I40E_FDIR_NUM_RX_DESC; rxq->queue_id = I40E_FDIR_QUEUE_ID; rxq->reg_idx = pf->fdir.fdir_vsi->base_queue; rxq->vsi = pf->fdir.fdir_vsi; rxq->rx_ring_phys_addr = rz->iova; memset(rz->addr, 0, I40E_FDIR_NUM_RX_DESC * sizeof(union i40e_rx_desc)); rxq->rx_ring = (union i40e_rx_desc *)rz->addr; /* * Don't need to allocate software ring and reset for the fdir * rx queue, just set the queue has been configured. */ rxq->q_set = TRUE; pf->fdir.rxq = rxq; return I40E_SUCCESS; } void i40e_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, struct rte_eth_rxq_info *qinfo) { struct i40e_rx_queue *rxq; rxq = dev->data->rx_queues[queue_id]; qinfo->mp = rxq->mp; qinfo->scattered_rx = dev->data->scattered_rx; qinfo->nb_desc = rxq->nb_rx_desc; qinfo->conf.rx_free_thresh = rxq->rx_free_thresh; qinfo->conf.rx_drop_en = rxq->drop_en; qinfo->conf.rx_deferred_start = rxq->rx_deferred_start; qinfo->conf.offloads = rxq->offloads; } void i40e_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, struct rte_eth_txq_info *qinfo) { struct i40e_tx_queue *txq; txq = dev->data->tx_queues[queue_id]; qinfo->nb_desc = txq->nb_tx_desc; qinfo->conf.tx_thresh.pthresh = txq->pthresh; qinfo->conf.tx_thresh.hthresh = txq->hthresh; qinfo->conf.tx_thresh.wthresh = txq->wthresh; qinfo->conf.tx_free_thresh = txq->tx_free_thresh; qinfo->conf.tx_rs_thresh = txq->tx_rs_thresh; qinfo->conf.tx_deferred_start = txq->tx_deferred_start; qinfo->conf.offloads = txq->offloads; } static eth_rx_burst_t i40e_get_latest_rx_vec(bool scatter) { #ifdef RTE_ARCH_X86 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) return scatter ? i40e_recv_scattered_pkts_vec_avx2 : i40e_recv_pkts_vec_avx2; #endif return scatter ? i40e_recv_scattered_pkts_vec : i40e_recv_pkts_vec; } static eth_rx_burst_t i40e_get_recommend_rx_vec(bool scatter) { #ifdef RTE_ARCH_X86 /* * since AVX frequency can be different to base frequency, limit * use of AVX2 version to later plaforms, not all those that could * theoretically run it. */ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) return scatter ? i40e_recv_scattered_pkts_vec_avx2 : i40e_recv_pkts_vec_avx2; #endif return scatter ? i40e_recv_scattered_pkts_vec : i40e_recv_pkts_vec; } void __attribute__((cold)) i40e_set_rx_function(struct rte_eth_dev *dev) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); uint16_t rx_using_sse, i; /* In order to allow Vector Rx there are a few configuration * conditions to be met and Rx Bulk Allocation should be allowed. */ if (rte_eal_process_type() == RTE_PROC_PRIMARY) { if (i40e_rx_vec_dev_conf_condition_check(dev) || !ad->rx_bulk_alloc_allowed) { PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet" " Vector Rx preconditions", dev->data->port_id); ad->rx_vec_allowed = false; } if (ad->rx_vec_allowed) { for (i = 0; i < dev->data->nb_rx_queues; i++) { struct i40e_rx_queue *rxq = dev->data->rx_queues[i]; if (rxq && i40e_rxq_vec_setup(rxq)) { ad->rx_vec_allowed = false; break; } } } } if (ad->rx_vec_allowed) { /* Vec Rx path */ PMD_INIT_LOG(DEBUG, "Vector Rx path will be used on port=%d.", dev->data->port_id); if (ad->use_latest_vec) dev->rx_pkt_burst = i40e_get_latest_rx_vec(dev->data->scattered_rx); else dev->rx_pkt_burst = i40e_get_recommend_rx_vec(dev->data->scattered_rx); } else if (!dev->data->scattered_rx && ad->rx_bulk_alloc_allowed) { PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are " "satisfied. Rx Burst Bulk Alloc function " "will be used on port=%d.", dev->data->port_id); dev->rx_pkt_burst = i40e_recv_pkts_bulk_alloc; } else { /* Simple Rx Path. */ PMD_INIT_LOG(DEBUG, "Simple Rx path will be used on port=%d.", dev->data->port_id); dev->rx_pkt_burst = dev->data->scattered_rx ? i40e_recv_scattered_pkts : i40e_recv_pkts; } /* Propagate information about RX function choice through all queues. */ if (rte_eal_process_type() == RTE_PROC_PRIMARY) { rx_using_sse = (dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec || dev->rx_pkt_burst == i40e_recv_pkts_vec || dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx2 || dev->rx_pkt_burst == i40e_recv_pkts_vec_avx2); for (i = 0; i < dev->data->nb_rx_queues; i++) { struct i40e_rx_queue *rxq = dev->data->rx_queues[i]; if (rxq) rxq->rx_using_sse = rx_using_sse; } } } void __attribute__((cold)) i40e_set_tx_function_flag(struct rte_eth_dev *dev, struct i40e_tx_queue *txq) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); /* Use a simple Tx queue if possible (only fast free is allowed) */ ad->tx_simple_allowed = (txq->offloads == (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE) && txq->tx_rs_thresh >= RTE_PMD_I40E_TX_MAX_BURST); ad->tx_vec_allowed = (ad->tx_simple_allowed && txq->tx_rs_thresh <= RTE_I40E_TX_MAX_FREE_BUF_SZ); if (ad->tx_vec_allowed) PMD_INIT_LOG(DEBUG, "Vector Tx can be enabled on Tx queue %u.", txq->queue_id); else if (ad->tx_simple_allowed) PMD_INIT_LOG(DEBUG, "Simple Tx can be enabled on Tx queue %u.", txq->queue_id); else PMD_INIT_LOG(DEBUG, "Neither simple nor vector Tx enabled on Tx queue %u\n", txq->queue_id); } static eth_tx_burst_t i40e_get_latest_tx_vec(void) { #ifdef RTE_ARCH_X86 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) return i40e_xmit_pkts_vec_avx2; #endif return i40e_xmit_pkts_vec; } static eth_tx_burst_t i40e_get_recommend_tx_vec(void) { #ifdef RTE_ARCH_X86 /* * since AVX frequency can be different to base frequency, limit * use of AVX2 version to later plaforms, not all those that could * theoretically run it. */ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) return i40e_xmit_pkts_vec_avx2; #endif return i40e_xmit_pkts_vec; } void __attribute__((cold)) i40e_set_tx_function(struct rte_eth_dev *dev) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); int i; if (rte_eal_process_type() == RTE_PROC_PRIMARY) { if (ad->tx_vec_allowed) { for (i = 0; i < dev->data->nb_tx_queues; i++) { struct i40e_tx_queue *txq = dev->data->tx_queues[i]; if (txq && i40e_txq_vec_setup(txq)) { ad->tx_vec_allowed = false; break; } } } } if (ad->tx_simple_allowed) { if (ad->tx_vec_allowed) { PMD_INIT_LOG(DEBUG, "Vector tx finally be used."); if (ad->use_latest_vec) dev->tx_pkt_burst = i40e_get_latest_tx_vec(); else dev->tx_pkt_burst = i40e_get_recommend_tx_vec(); } else { PMD_INIT_LOG(DEBUG, "Simple tx finally be used."); dev->tx_pkt_burst = i40e_xmit_pkts_simple; } dev->tx_pkt_prepare = NULL; } else { PMD_INIT_LOG(DEBUG, "Xmit tx finally be used."); dev->tx_pkt_burst = i40e_xmit_pkts; dev->tx_pkt_prepare = i40e_prep_pkts; } } void __attribute__((cold)) i40e_set_default_ptype_table(struct rte_eth_dev *dev) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); int i; for (i = 0; i < I40E_MAX_PKT_TYPE; i++) ad->ptype_tbl[i] = i40e_get_default_pkt_type(i); } void __attribute__((cold)) i40e_set_default_pctype_table(struct rte_eth_dev *dev) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); int i; for (i = 0; i < I40E_FLOW_TYPE_MAX; i++) ad->pctypes_tbl[i] = 0ULL; ad->flow_types_mask = 0ULL; ad->pctypes_mask = 0ULL; ad->pctypes_tbl[RTE_ETH_FLOW_FRAG_IPV4] = (1ULL << I40E_FILTER_PCTYPE_FRAG_IPV4); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_TCP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_TCP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_SCTP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_SCTP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_OTHER] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER); ad->pctypes_tbl[RTE_ETH_FLOW_FRAG_IPV6] = (1ULL << I40E_FILTER_PCTYPE_FRAG_IPV6); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_TCP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_TCP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_SCTP] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_SCTP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_OTHER] = (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER); ad->pctypes_tbl[RTE_ETH_FLOW_L2_PAYLOAD] = (1ULL << I40E_FILTER_PCTYPE_L2_PAYLOAD); if (hw->mac.type == I40E_MAC_X722) { ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_TCP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP); ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_TCP] |= (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK); } for (i = 0; i < I40E_FLOW_TYPE_MAX; i++) { if (ad->pctypes_tbl[i]) ad->flow_types_mask |= (1ULL << i); ad->pctypes_mask |= ad->pctypes_tbl[i]; } } /* Stubs needed for linkage when CONFIG_RTE_LIBRTE_I40E_INC_VECTOR is set to 'n' */ __rte_weak int i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev) { return -1; } __rte_weak uint16_t i40e_recv_pkts_vec( void __rte_unused *rx_queue, struct rte_mbuf __rte_unused **rx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } __rte_weak uint16_t i40e_recv_scattered_pkts_vec( void __rte_unused *rx_queue, struct rte_mbuf __rte_unused **rx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } __rte_weak uint16_t i40e_recv_pkts_vec_avx2(void __rte_unused *rx_queue, struct rte_mbuf __rte_unused **rx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } __rte_weak uint16_t i40e_recv_scattered_pkts_vec_avx2(void __rte_unused *rx_queue, struct rte_mbuf __rte_unused **rx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } __rte_weak int i40e_rxq_vec_setup(struct i40e_rx_queue __rte_unused *rxq) { return -1; } __rte_weak int i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq) { return -1; } __rte_weak void i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue __rte_unused*rxq) { return; } __rte_weak uint16_t i40e_xmit_fixed_burst_vec(void __rte_unused * tx_queue, struct rte_mbuf __rte_unused **tx_pkts, uint16_t __rte_unused nb_pkts) { return 0; } __rte_weak uint16_t i40e_xmit_pkts_vec_avx2(void __rte_unused * tx_queue, struct rte_mbuf __rte_unused **tx_pkts, uint16_t __rte_unused nb_pkts) { return 0; }