X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_rxtx_vec_neon.h;h=e914d017d68d483d0ac47d4c755c4fc492f528ff;hb=9bf26e1318e3cd7a04115c8201255505e90cab83;hp=240d396e3518b954dac9d96b55ecbeebfb90f4d7;hpb=5f8ba81c42283107f064aa6c5566ac8726b35f45;p=dpdk.git diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h index 240d396e35..e914d017d6 100644 --- a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h +++ b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h @@ -26,294 +26,6 @@ #pragma GCC diagnostic ignored "-Wcast-qual" -/** - * Fill in buffer descriptors in a multi-packet send descriptor. - * - * @param txq - * Pointer to TX queue structure. - * @param dseg - * Pointer to buffer descriptor to be written. - * @param pkts - * Pointer to array of packets to be sent. - * @param n - * Number of packets to be filled. - */ -static inline void -txq_wr_dseg_v(struct mlx5_txq_data *txq, uint8_t *dseg, - struct rte_mbuf **pkts, unsigned int n) -{ - unsigned int pos; - uintptr_t addr; - const uint8x16_t dseg_shuf_m = { - 3, 2, 1, 0, /* length, bswap32 */ - 4, 5, 6, 7, /* lkey */ - 15, 14, 13, 12, /* addr, bswap64 */ - 11, 10, 9, 8 - }; -#ifdef MLX5_PMD_SOFT_COUNTERS - uint32_t tx_byte = 0; -#endif - - for (pos = 0; pos < n; ++pos, dseg += MLX5_WQE_DWORD_SIZE) { - uint8x16_t desc; - struct rte_mbuf *pkt = pkts[pos]; - - addr = rte_pktmbuf_mtod(pkt, uintptr_t); - desc = vreinterpretq_u8_u32((uint32x4_t) { - DATA_LEN(pkt), - mlx5_tx_mb2mr(txq, pkt), - addr, - addr >> 32 }); - desc = vqtbl1q_u8(desc, dseg_shuf_m); - vst1q_u8(dseg, desc); -#ifdef MLX5_PMD_SOFT_COUNTERS - tx_byte += DATA_LEN(pkt); -#endif - } -#ifdef MLX5_PMD_SOFT_COUNTERS - txq->stats.obytes += tx_byte; -#endif -} - -/** - * Send multi-segmented packets until it encounters a single segment packet in - * the pkts list. - * - * @param txq - * Pointer to TX queue structure. - * @param pkts - * Pointer to array of packets to be sent. - * @param pkts_n - * Number of packets to be sent. - * - * @return - * Number of packets successfully transmitted (<= pkts_n). - */ -static uint16_t -txq_scatter_v(struct mlx5_txq_data *txq, struct rte_mbuf **pkts, - uint16_t pkts_n) -{ - uint16_t elts_head = txq->elts_head; - const uint16_t elts_n = 1 << txq->elts_n; - const uint16_t elts_m = elts_n - 1; - const uint16_t wq_n = 1 << txq->wqe_n; - const uint16_t wq_mask = wq_n - 1; - const unsigned int nb_dword_per_wqebb = - MLX5_WQE_SIZE / MLX5_WQE_DWORD_SIZE; - const unsigned int nb_dword_in_hdr = - sizeof(struct mlx5_wqe) / MLX5_WQE_DWORD_SIZE; - unsigned int n; - volatile struct mlx5_wqe *wqe = NULL; - - assert(elts_n > pkts_n); - mlx5_tx_complete(txq); - /* A CQE slot must always be available. */ - assert((1u << txq->cqe_n) - (txq->cq_pi - txq->cq_ci)); - if (unlikely(!pkts_n)) - return 0; - for (n = 0; n < pkts_n; ++n) { - struct rte_mbuf *buf = pkts[n]; - unsigned int segs_n = buf->nb_segs; - unsigned int ds = nb_dword_in_hdr; - unsigned int len = PKT_LEN(buf); - uint16_t wqe_ci = txq->wqe_ci; - const uint8x16_t ctrl_shuf_m = { - 3, 2, 1, 0, /* bswap32 */ - 7, 6, 5, 4, /* bswap32 */ - 11, 10, 9, 8, /* bswap32 */ - 12, 13, 14, 15 - }; - uint8_t cs_flags; - uint16_t max_elts; - uint16_t max_wqe; - uint8x16_t *t_wqe; - uint8_t *dseg; - uint8x16_t ctrl; - - assert(segs_n); - max_elts = elts_n - (elts_head - txq->elts_tail); - max_wqe = wq_n - (txq->wqe_ci - txq->wqe_pi); - /* - * A MPW session consumes 2 WQEs at most to - * include MLX5_MPW_DSEG_MAX pointers. - */ - if (segs_n == 1 || - max_elts < segs_n || max_wqe < 2) - break; - wqe = &((volatile struct mlx5_wqe64 *) - txq->wqes)[wqe_ci & wq_mask].hdr; - cs_flags = txq_ol_cksum_to_cs(buf); - /* Title WQEBB pointer. */ - t_wqe = (uint8x16_t *)wqe; - dseg = (uint8_t *)(wqe + 1); - do { - if (!(ds++ % nb_dword_per_wqebb)) { - dseg = (uint8_t *) - &((volatile struct mlx5_wqe64 *) - txq->wqes)[++wqe_ci & wq_mask]; - } - txq_wr_dseg_v(txq, dseg, &buf, 1); - dseg += MLX5_WQE_DWORD_SIZE; - (*txq->elts)[elts_head++ & elts_m] = buf; - buf = buf->next; - } while (--segs_n); - ++wqe_ci; - /* Fill CTRL in the header. */ - ctrl = vreinterpretq_u8_u32((uint32x4_t) { - MLX5_OPC_MOD_MPW << 24 | - txq->wqe_ci << 8 | MLX5_OPCODE_TSO, - txq->qp_num_8s | ds, 0, 0}); - ctrl = vqtbl1q_u8(ctrl, ctrl_shuf_m); - vst1q_u8((void *)t_wqe, ctrl); - /* Fill ESEG in the header. */ - vst1q_u16((void *)(t_wqe + 1), - (uint16x8_t) { 0, 0, cs_flags, rte_cpu_to_be_16(len), - 0, 0, 0, 0 }); - txq->wqe_ci = wqe_ci; - } - if (!n) - return 0; - txq->elts_comp += (uint16_t)(elts_head - txq->elts_head); - txq->elts_head = elts_head; - if (txq->elts_comp >= MLX5_TX_COMP_THRESH) { - wqe->ctrl[2] = rte_cpu_to_be_32(8); - wqe->ctrl[3] = txq->elts_head; - txq->elts_comp = 0; -#ifndef NDEBUG - ++txq->cq_pi; -#endif - } -#ifdef MLX5_PMD_SOFT_COUNTERS - txq->stats.opackets += n; -#endif - mlx5_tx_dbrec(txq, wqe); - return n; -} - -/** - * Send burst of packets with Enhanced MPW. If it encounters a multi-seg packet, - * it returns to make it processed by txq_scatter_v(). All the packets in - * the pkts list should be single segment packets having same offload flags. - * This must be checked by txq_count_contig_single_seg() and txq_calc_offload(). - * - * @param txq - * Pointer to TX queue structure. - * @param pkts - * Pointer to array of packets to be sent. - * @param pkts_n - * Number of packets to be sent (<= MLX5_VPMD_TX_MAX_BURST). - * @param cs_flags - * Checksum offload flags to be written in the descriptor. - * - * @return - * Number of packets successfully transmitted (<= pkts_n). - */ -static inline uint16_t -txq_burst_v(struct mlx5_txq_data *txq, struct rte_mbuf **pkts, uint16_t pkts_n, - uint8_t cs_flags) -{ - struct rte_mbuf **elts; - uint16_t elts_head = txq->elts_head; - const uint16_t elts_n = 1 << txq->elts_n; - const uint16_t elts_m = elts_n - 1; - const unsigned int nb_dword_per_wqebb = - MLX5_WQE_SIZE / MLX5_WQE_DWORD_SIZE; - const unsigned int nb_dword_in_hdr = - sizeof(struct mlx5_wqe) / MLX5_WQE_DWORD_SIZE; - unsigned int n = 0; - unsigned int pos; - uint16_t max_elts; - uint16_t max_wqe; - uint32_t comp_req = 0; - const uint16_t wq_n = 1 << txq->wqe_n; - const uint16_t wq_mask = wq_n - 1; - uint16_t wq_idx = txq->wqe_ci & wq_mask; - volatile struct mlx5_wqe64 *wq = - &((volatile struct mlx5_wqe64 *)txq->wqes)[wq_idx]; - volatile struct mlx5_wqe *wqe = (volatile struct mlx5_wqe *)wq; - const uint8x16_t ctrl_shuf_m = { - 3, 2, 1, 0, /* bswap32 */ - 7, 6, 5, 4, /* bswap32 */ - 11, 10, 9, 8, /* bswap32 */ - 12, 13, 14, 15 - }; - uint8x16_t *t_wqe; - uint8_t *dseg; - uint8x16_t ctrl; - - /* Make sure all packets can fit into a single WQE. */ - assert(elts_n > pkts_n); - mlx5_tx_complete(txq); - max_elts = (elts_n - (elts_head - txq->elts_tail)); - /* A CQE slot must always be available. */ - assert((1u << txq->cqe_n) - (txq->cq_pi - txq->cq_ci)); - max_wqe = (1u << txq->wqe_n) - (txq->wqe_ci - txq->wqe_pi); - pkts_n = RTE_MIN((unsigned int)RTE_MIN(pkts_n, max_wqe), max_elts); - if (unlikely(!pkts_n)) - return 0; - elts = &(*txq->elts)[elts_head & elts_m]; - /* Loop for available tailroom first. */ - n = RTE_MIN(elts_n - (elts_head & elts_m), pkts_n); - for (pos = 0; pos < (n & -2); pos += 2) - vst1q_u64((void *)&elts[pos], vld1q_u64((void *)&pkts[pos])); - if (n & 1) - elts[pos] = pkts[pos]; - /* Check if it crosses the end of the queue. */ - if (unlikely(n < pkts_n)) { - elts = &(*txq->elts)[0]; - for (pos = 0; pos < pkts_n - n; ++pos) - elts[pos] = pkts[n + pos]; - } - txq->elts_head += pkts_n; - /* Save title WQEBB pointer. */ - t_wqe = (uint8x16_t *)wqe; - dseg = (uint8_t *)(wqe + 1); - /* Calculate the number of entries to the end. */ - n = RTE_MIN( - (wq_n - wq_idx) * nb_dword_per_wqebb - nb_dword_in_hdr, - pkts_n); - /* Fill DSEGs. */ - txq_wr_dseg_v(txq, dseg, pkts, n); - /* Check if it crosses the end of the queue. */ - if (n < pkts_n) { - dseg = (uint8_t *)txq->wqes; - txq_wr_dseg_v(txq, dseg, &pkts[n], pkts_n - n); - } - if (txq->elts_comp + pkts_n < MLX5_TX_COMP_THRESH) { - txq->elts_comp += pkts_n; - } else { - /* Request a completion. */ - txq->elts_comp = 0; -#ifndef NDEBUG - ++txq->cq_pi; -#endif - comp_req = 8; - } - /* Fill CTRL in the header. */ - ctrl = vreinterpretq_u8_u32((uint32x4_t) { - MLX5_OPC_MOD_ENHANCED_MPSW << 24 | - txq->wqe_ci << 8 | MLX5_OPCODE_ENHANCED_MPSW, - txq->qp_num_8s | (pkts_n + 2), - comp_req, - txq->elts_head }); - ctrl = vqtbl1q_u8(ctrl, ctrl_shuf_m); - vst1q_u8((void *)t_wqe, ctrl); - /* Fill ESEG in the header. */ - vst1q_u8((void *)(t_wqe + 1), - (uint8x16_t) { 0, 0, 0, 0, - cs_flags, 0, 0, 0, - 0, 0, 0, 0, - 0, 0, 0, 0 }); -#ifdef MLX5_PMD_SOFT_COUNTERS - txq->stats.opackets += pkts_n; -#endif - txq->wqe_ci += (nb_dword_in_hdr + pkts_n + (nb_dword_per_wqebb - 1)) / - nb_dword_per_wqebb; - /* Ring QP doorbell. */ - mlx5_tx_dbrec_cond_wmb(txq, wqe, pkts_n < MLX5_VPMD_TX_MAX_BURST); - return pkts_n; -} - /** * Store free buffers to RX SW ring. * @@ -353,8 +65,11 @@ rxq_copy_mbuf_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t n) * @param elts * Pointer to SW ring to be filled. The first mbuf has to be pre-built from * the title completion descriptor to be copied to the rest of mbufs. + * + * @return + * Number of mini-CQEs successfully decompressed. */ -static inline void +static inline uint16_t rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq, struct rte_mbuf **elts) { @@ -380,7 +95,7 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq, }; /* Restore the compressed count. Must be 16 bits. */ const uint16_t mcqe_n = t_pkt->data_len + - (rxq->crc_present * ETHER_CRC_LEN); + (rxq->crc_present * RTE_ETHER_CRC_LEN); const uint64x2_t rearm = vld1q_u64((void *)&t_pkt->rearm_data); const uint32x4_t rxdf_mask = { @@ -394,8 +109,8 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq, vreinterpretq_u8_u32(rxdf_mask)); const uint16x8_t crc_adj = { 0, 0, - rxq->crc_present * ETHER_CRC_LEN, 0, - rxq->crc_present * ETHER_CRC_LEN, 0, + rxq->crc_present * RTE_ETHER_CRC_LEN, 0, + rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0 }; const uint32_t flow_tag = t_pkt->hash.fdir.hi; @@ -506,6 +221,7 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq, rxq->stats.ibytes += rcvd_byte; #endif rxq->cq_ci += mcqe_n; + return mcqe_n; } /** @@ -551,6 +267,7 @@ rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq, const uint64x1_t mbuf_init = vld1_u64(&rxq->mbuf_initializer); const uint64x1_t r32_mask = vcreate_u64(0xffffffff); uint64x2_t rearm0, rearm1, rearm2, rearm3; + uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3; if (rxq->mark) { const uint32x4_t ft_def = vdupq_n_u32(MLX5_FLOW_MARK_DEFAULT); @@ -583,14 +300,18 @@ rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq, ptype = vshrn_n_u32(ptype_info, 10); /* Errored packets will have RTE_PTYPE_ALL_MASK. */ ptype = vorr_u16(ptype, op_err); - pkts[0]->packet_type = - mlx5_ptype_table[vget_lane_u8(vreinterpret_u8_u16(ptype), 6)]; - pkts[1]->packet_type = - mlx5_ptype_table[vget_lane_u8(vreinterpret_u8_u16(ptype), 4)]; - pkts[2]->packet_type = - mlx5_ptype_table[vget_lane_u8(vreinterpret_u8_u16(ptype), 2)]; - pkts[3]->packet_type = - mlx5_ptype_table[vget_lane_u8(vreinterpret_u8_u16(ptype), 0)]; + pt_idx0 = vget_lane_u8(vreinterpret_u8_u16(ptype), 6); + pt_idx1 = vget_lane_u8(vreinterpret_u8_u16(ptype), 4); + pt_idx2 = vget_lane_u8(vreinterpret_u8_u16(ptype), 2); + pt_idx3 = vget_lane_u8(vreinterpret_u8_u16(ptype), 0); + pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] | + !!(pt_idx0 & (1 << 6)) * rxq->tunnel; + pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] | + !!(pt_idx1 & (1 << 6)) * rxq->tunnel; + pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] | + !!(pt_idx2 & (1 << 6)) * rxq->tunnel; + pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] | + !!(pt_idx3 & (1 << 6)) * rxq->tunnel; /* Fill flags for checksum and VLAN. */ pinfo = vandq_u32(ptype_info, ptype_ol_mask); pinfo = vreinterpretq_u32_u8( @@ -713,7 +434,7 @@ rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n, 12, 13, 14, -1 /* 1st CQE */ }; const uint16x8_t crc_adj = { - 0, 0, rxq->crc_present * ETHER_CRC_LEN, 0, 0, 0, 0, 0 + 0, 0, rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0 }; const uint32x4_t flow_mark_adj = { 0, 0, 0, rxq->mark * (-1) }; @@ -725,24 +446,17 @@ rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n, rte_prefetch_non_temporal(cq + 2); rte_prefetch_non_temporal(cq + 3); pkts_n = RTE_MIN(pkts_n, MLX5_VPMD_RX_MAX_BURST); - /* - * Order of indexes: - * rq_ci >= cq_ci >= rq_pi - * Definition of indexes: - * rq_ci - cq_ci := # of buffers owned by HW (posted). - * cq_ci - rq_pi := # of buffers not returned to app (decompressed). - * N - (rq_ci - rq_pi) := # of buffers consumed (to be replenished). - */ repl_n = q_n - (rxq->rq_ci - rxq->rq_pi); - if (repl_n >= MLX5_VPMD_RXQ_RPLNSH_THRESH) + if (repl_n >= rxq->rq_repl_thresh) mlx5_rx_replenish_bulk_mbuf(rxq, repl_n); /* See if there're unreturned mbufs from compressed CQE. */ - rcvd_pkt = rxq->cq_ci - rxq->rq_pi; + rcvd_pkt = rxq->decompressed; if (rcvd_pkt > 0) { rcvd_pkt = RTE_MIN(rcvd_pkt, pkts_n); rxq_copy_mbuf_v(rxq, pkts, rcvd_pkt); rxq->rq_pi += rcvd_pkt; pkts += rcvd_pkt; + rxq->decompressed -= rcvd_pkt; } elts_idx = rxq->rq_pi & q_mask; elts = &(*rxq->elts)[elts_idx]; @@ -750,10 +464,11 @@ rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n, pkts_n = RTE_ALIGN_FLOOR(pkts_n - rcvd_pkt, MLX5_VPMD_DESCS_PER_LOOP); /* Not to cross queue end. */ pkts_n = RTE_MIN(pkts_n, q_n - elts_idx); + pkts_n = RTE_MIN(pkts_n, q_n - cq_idx); if (!pkts_n) return rcvd_pkt; /* At this point, there shouldn't be any remained packets. */ - assert(rxq->rq_pi == rxq->cq_ci); + assert(rxq->decompressed == 0); /* * Note that vectors have reverse order - {v3, v2, v1, v0}, because * there's no instruction to count trailing zeros. __builtin_clzl() is @@ -999,18 +714,20 @@ rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n, /* Decompress the last CQE if compressed. */ if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) { assert(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP)); - rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]); + rxq->decompressed = rxq_cq_decompress_v(rxq, &cq[nocmp_n], + &elts[nocmp_n]); /* Return more packets if needed. */ if (nocmp_n < pkts_n) { - uint16_t n = rxq->cq_ci - rxq->rq_pi; + uint16_t n = rxq->decompressed; n = RTE_MIN(n, pkts_n - nocmp_n); rxq_copy_mbuf_v(rxq, &pkts[nocmp_n], n); rxq->rq_pi += n; rcvd_pkt += n; + rxq->decompressed -= n; } } - rte_compiler_barrier(); + rte_cio_wmb(); *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci); return rcvd_pkt; }