X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_rxtx.h;h=d443db4279c3f4a299a6ffc14d973376fc00e666;hb=151cbe3aabf9e1a71e02827e5e1ff0814275019a;hp=df4bd3cf93f78d01ee3f53a765232ae61f9d744e;hpb=e1592b6c4deace2c9350b1ce9f1b78c6113675a8;p=dpdk.git diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h index df4bd3cf93..d443db4279 100644 --- a/drivers/net/mlx5/mlx5_rxtx.h +++ b/drivers/net/mlx5/mlx5_rxtx.h @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -32,21 +31,10 @@ #include "mlx5_autoconf.h" #include "mlx5_mr.h" -/* Support tunnel matching. */ -#define MLX5_FLOW_TUNNEL 10 /* Mbuf dynamic flag offset for inline. */ extern uint64_t rte_net_mlx5_dynf_inline_mask; -struct mlx5_rxq_stats { -#ifdef MLX5_PMD_SOFT_COUNTERS - uint64_t ipackets; /**< Total of successfully received packets. */ - uint64_t ibytes; /**< Total of successfully received bytes. */ -#endif - uint64_t idropped; /**< Total of packets dropped when RX ring full. */ - uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */ -}; - struct mlx5_txq_stats { #ifdef MLX5_PMD_SOFT_COUNTERS uint64_t opackets; /**< Total of successfully sent packets. */ @@ -57,153 +45,6 @@ struct mlx5_txq_stats { struct mlx5_priv; -/* Compressed CQE context. */ -struct rxq_zip { - uint16_t ai; /* Array index. */ - uint16_t ca; /* Current array index. */ - uint16_t na; /* Next array index. */ - uint16_t cq_ci; /* The next CQE. */ - uint32_t cqe_cnt; /* Number of CQEs. */ -}; - -/* Multi-Packet RQ buffer header. */ -struct mlx5_mprq_buf { - struct rte_mempool *mp; - uint16_t refcnt; /* Atomically accessed refcnt. */ - uint8_t pad[RTE_PKTMBUF_HEADROOM]; /* Headroom for the first packet. */ - struct rte_mbuf_ext_shared_info shinfos[]; - /* - * Shared information per stride. - * More memory will be allocated for the first stride head-room and for - * the strides data. - */ -} __rte_cache_aligned; - -/* Get pointer to the first stride. */ -#define mlx5_mprq_buf_addr(ptr, strd_n) (RTE_PTR_ADD((ptr), \ - sizeof(struct mlx5_mprq_buf) + \ - (strd_n) * \ - sizeof(struct rte_mbuf_ext_shared_info) + \ - RTE_PKTMBUF_HEADROOM)) - -#define MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES 6 -#define MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES 9 - -enum mlx5_rxq_err_state { - MLX5_RXQ_ERR_STATE_NO_ERROR = 0, - MLX5_RXQ_ERR_STATE_NEED_RESET, - MLX5_RXQ_ERR_STATE_NEED_READY, -}; - -enum mlx5_rqx_code { - MLX5_RXQ_CODE_EXIT = 0, - MLX5_RXQ_CODE_NOMBUF, - MLX5_RXQ_CODE_DROPPED, -}; - -struct mlx5_eth_rxseg { - struct rte_mempool *mp; /**< Memory pool to allocate segment from. */ - uint16_t length; /**< Segment data length, configures split point. */ - uint16_t offset; /**< Data offset from beginning of mbuf data buffer. */ - uint32_t reserved; /**< Reserved field. */ -}; - -/* RX queue descriptor. */ -struct mlx5_rxq_data { - unsigned int csum:1; /* Enable checksum offloading. */ - unsigned int hw_timestamp:1; /* Enable HW timestamp. */ - unsigned int rt_timestamp:1; /* Realtime timestamp format. */ - unsigned int vlan_strip:1; /* Enable VLAN stripping. */ - unsigned int crc_present:1; /* CRC must be subtracted. */ - unsigned int sges_n:3; /* Log 2 of SGEs (max buffers per packet). */ - unsigned int cqe_n:4; /* Log 2 of CQ elements. */ - unsigned int elts_n:4; /* Log 2 of Mbufs. */ - unsigned int rss_hash:1; /* RSS hash result is enabled. */ - unsigned int mark:1; /* Marked flow available on the queue. */ - unsigned int strd_num_n:5; /* Log 2 of the number of stride. */ - unsigned int strd_sz_n:4; /* Log 2 of stride size. */ - unsigned int strd_shift_en:1; /* Enable 2bytes shift on a stride. */ - unsigned int err_state:2; /* enum mlx5_rxq_err_state. */ - unsigned int strd_scatter_en:1; /* Scattered packets from a stride. */ - unsigned int lro:1; /* Enable LRO. */ - unsigned int dynf_meta:1; /* Dynamic metadata is configured. */ - volatile uint32_t *rq_db; - volatile uint32_t *cq_db; - uint16_t port_id; - uint32_t elts_ci; - uint32_t rq_ci; - uint16_t consumed_strd; /* Number of consumed strides in WQE. */ - uint32_t rq_pi; - uint32_t cq_ci; - uint16_t rq_repl_thresh; /* Threshold for buffer replenishment. */ - union { - struct rxq_zip zip; /* Compressed context. */ - uint16_t decompressed; - /* Number of ready mbufs decompressed from the CQ. */ - }; - struct mlx5_mr_ctrl mr_ctrl; /* MR control descriptor. */ - uint16_t mprq_max_memcpy_len; /* Maximum size of packet to memcpy. */ - volatile void *wqes; - volatile struct mlx5_cqe(*cqes)[]; - struct rte_mbuf *(*elts)[]; - struct mlx5_mprq_buf *(*mprq_bufs)[]; - struct rte_mempool *mp; - struct rte_mempool *mprq_mp; /* Mempool for Multi-Packet RQ. */ - struct mlx5_mprq_buf *mprq_repl; /* Stashed mbuf for replenish. */ - struct mlx5_dev_ctx_shared *sh; /* Shared context. */ - uint16_t idx; /* Queue index. */ - struct mlx5_rxq_stats stats; - rte_xmm_t mbuf_initializer; /* Default rearm/flags for vectorized Rx. */ - struct rte_mbuf fake_mbuf; /* elts padding for vectorized Rx. */ - void *cq_uar; /* Verbs CQ user access region. */ - uint32_t cqn; /* CQ number. */ - uint8_t cq_arm_sn; /* CQ arm seq number. */ -#ifndef RTE_ARCH_64 - rte_spinlock_t *uar_lock_cq; - /* CQ (UAR) access lock required for 32bit implementations */ -#endif - uint32_t tunnel; /* Tunnel information. */ - int timestamp_offset; /* Dynamic mbuf field for timestamp. */ - uint64_t timestamp_rx_flag; /* Dynamic mbuf flag for timestamp. */ - uint64_t flow_meta_mask; - int32_t flow_meta_offset; - uint32_t rxseg_n; /* Number of split segment descriptions. */ - struct mlx5_eth_rxseg rxseg[MLX5_MAX_RXQ_NSEG]; - /* Buffer split segment descriptions - sizes, offsets, pools. */ -} __rte_cache_aligned; - -enum mlx5_rxq_type { - MLX5_RXQ_TYPE_STANDARD, /* Standard Rx queue. */ - MLX5_RXQ_TYPE_HAIRPIN, /* Hairpin Rx queue. */ - MLX5_RXQ_TYPE_UNDEFINED, -}; - -/* RX queue control descriptor. */ -struct mlx5_rxq_ctrl { - struct mlx5_rxq_data rxq; /* Data path structure. */ - LIST_ENTRY(mlx5_rxq_ctrl) next; /* Pointer to the next element. */ - uint32_t refcnt; /* Reference counter. */ - struct mlx5_rxq_obj *obj; /* Verbs/DevX elements. */ - struct mlx5_priv *priv; /* Back pointer to private data. */ - enum mlx5_rxq_type type; /* Rxq type. */ - unsigned int socket; /* CPU socket ID for allocations. */ - unsigned int irq:1; /* Whether IRQ is enabled. */ - uint32_t flow_mark_n; /* Number of Mark/Flag flows using this Queue. */ - uint32_t flow_tunnels_n[MLX5_FLOW_TUNNEL]; /* Tunnels counters. */ - uint32_t wqn; /* WQ number. */ - uint16_t dump_file_n; /* Number of dump files. */ - struct mlx5_devx_dbr_page *rq_dbrec_page; - uint64_t rq_dbr_offset; - /* Storing RQ door-bell information, needed when freeing door-bell. */ - struct mlx5_devx_dbr_page *cq_dbrec_page; - uint64_t cq_dbr_offset; - /* Storing CQ door-bell information, needed when freeing door-bell. */ - void *wq_umem; /* WQ buffer registration info. */ - void *cq_umem; /* CQ buffer registration info. */ - struct rte_eth_hairpin_conf hairpin_conf; /* Hairpin configuration. */ - uint32_t hairpin_status; /* Hairpin binding status. */ -}; - /* TX queue send local data. */ __extension__ struct mlx5_txq_local { @@ -216,6 +57,7 @@ struct mlx5_txq_local { uint16_t wqe_free; /* available wqe remain. */ uint16_t mbuf_off; /* data offset in current mbuf. */ uint16_t mbuf_nseg; /* number of remaining mbuf. */ + uint16_t mbuf_free; /* number of inline mbufs to free. */ }; /* TX queue descriptor. */ @@ -249,6 +91,7 @@ struct mlx5_txq_data { uint16_t vlan_en:1; /* VLAN insertion in WQE is supported. */ uint16_t db_nc:1; /* Doorbell mapped to non-cached region. */ uint16_t db_heu:1; /* Doorbell heuristic write barrier. */ + uint16_t fast_free:1; /* mbuf fast free on Tx is enabled. */ uint16_t inlen_send; /* Ordinary send data inline size. */ uint16_t inlen_empw; /* eMPW max packet size to inline. */ uint16_t inlen_mode; /* Minimal data length to inline. */ @@ -306,77 +149,6 @@ struct mlx5_txq_ctrl { #define MLX5_TX_BFREG(txq) \ (MLX5_PROC_PRIV((txq)->port_id)->uar_table[(txq)->idx]) -/* mlx5_rxq.c */ - -extern uint8_t rss_hash_default_key[]; - -int mlx5_check_mprq_support(struct rte_eth_dev *dev); -int mlx5_rxq_mprq_enabled(struct mlx5_rxq_data *rxq); -int mlx5_mprq_enabled(struct rte_eth_dev *dev); -unsigned int mlx5_rxq_cqe_num(struct mlx5_rxq_data *rxq_data); -int mlx5_mprq_free_mp(struct rte_eth_dev *dev); -int mlx5_mprq_alloc_mp(struct rte_eth_dev *dev); -int mlx5_rx_queue_start(struct rte_eth_dev *dev, uint16_t queue_id); -int mlx5_rx_queue_stop(struct rte_eth_dev *dev, uint16_t queue_id); -int mlx5_rx_queue_start_primary(struct rte_eth_dev *dev, uint16_t queue_id); -int mlx5_rx_queue_stop_primary(struct rte_eth_dev *dev, uint16_t queue_id); -int mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, - unsigned int socket, const struct rte_eth_rxconf *conf, - struct rte_mempool *mp); -int mlx5_rx_hairpin_queue_setup - (struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, - const struct rte_eth_hairpin_conf *hairpin_conf); -void mlx5_rx_queue_release(void *dpdk_rxq); -int mlx5_rx_intr_vec_enable(struct rte_eth_dev *dev); -void mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev); -int mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id); -int mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id); -int mlx5_rxq_obj_verify(struct rte_eth_dev *dev); -struct mlx5_rxq_ctrl *mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, - uint16_t desc, unsigned int socket, - const struct rte_eth_rxconf *conf, - const struct rte_eth_rxseg_split *rx_seg, - uint16_t n_seg); -struct mlx5_rxq_ctrl *mlx5_rxq_hairpin_new - (struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, - const struct rte_eth_hairpin_conf *hairpin_conf); -struct mlx5_rxq_ctrl *mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx); -int mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx); -int mlx5_rxq_verify(struct rte_eth_dev *dev); -int rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl); -int mlx5_ind_table_obj_verify(struct rte_eth_dev *dev); -struct mlx5_ind_table_obj *mlx5_ind_table_obj_get(struct rte_eth_dev *dev, - const uint16_t *queues, - uint32_t queues_n); -int mlx5_ind_table_obj_release(struct rte_eth_dev *dev, - struct mlx5_ind_table_obj *ind_tbl, - bool standalone); -struct mlx5_cache_entry *mlx5_hrxq_create_cb(struct mlx5_cache_list *list, - struct mlx5_cache_entry *entry __rte_unused, void *cb_ctx); -int mlx5_hrxq_match_cb(struct mlx5_cache_list *list, - struct mlx5_cache_entry *entry, - void *cb_ctx); -void mlx5_hrxq_remove_cb(struct mlx5_cache_list *list, - struct mlx5_cache_entry *entry); -uint32_t mlx5_hrxq_get(struct rte_eth_dev *dev, - struct mlx5_flow_rss_desc *rss_desc); -int mlx5_hrxq_release(struct rte_eth_dev *dev, uint32_t hxrq_idx); -uint32_t mlx5_hrxq_verify(struct rte_eth_dev *dev); - - -enum mlx5_rxq_type mlx5_rxq_get_type(struct rte_eth_dev *dev, uint16_t idx); -const struct rte_eth_hairpin_conf *mlx5_rxq_get_hairpin_conf - (struct rte_eth_dev *dev, uint16_t idx); -struct mlx5_hrxq *mlx5_drop_action_create(struct rte_eth_dev *dev); -void mlx5_drop_action_destroy(struct rte_eth_dev *dev); -uint64_t mlx5_get_rx_port_offloads(void); -uint64_t mlx5_get_rx_queue_offloads(struct rte_eth_dev *dev); -void mlx5_rxq_timestamp_set(struct rte_eth_dev *dev); -int mlx5_hrxq_modify(struct rte_eth_dev *dev, uint32_t hxrq_idx, - const uint8_t *rss_key, uint32_t rss_key_len, - uint64_t hash_fields, - const uint16_t *queues, uint32_t queues_n); - /* mlx5_txq.c */ int mlx5_tx_queue_start(struct rte_eth_dev *dev, uint16_t queue_id); @@ -417,45 +189,21 @@ extern uint8_t mlx5_swp_types_table[]; void mlx5_set_ptype_table(void); void mlx5_set_cksum_table(void); void mlx5_set_swp_types_table(void); -uint16_t mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n); -void mlx5_rxq_initialize(struct mlx5_rxq_data *rxq); -__rte_noinline int mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec); -void mlx5_mprq_buf_free_cb(void *addr, void *opaque); -void mlx5_mprq_buf_free(struct mlx5_mprq_buf *buf); -uint16_t mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, - uint16_t pkts_n); uint16_t removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n); -uint16_t removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, - uint16_t pkts_n); -int mlx5_rx_descriptor_status(void *rx_queue, uint16_t offset); int mlx5_tx_descriptor_status(void *tx_queue, uint16_t offset); -uint32_t mlx5_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id); void mlx5_dump_debug_information(const char *path, const char *title, const void *buf, unsigned int len); int mlx5_queue_state_modify_primary(struct rte_eth_dev *dev, const struct mlx5_mp_arg_queue_state_modify *sm); -void mlx5_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, - struct rte_eth_rxq_info *qinfo); void mlx5_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, struct rte_eth_txq_info *qinfo); -int mlx5_rx_burst_mode_get(struct rte_eth_dev *dev, uint16_t rx_queue_id, - struct rte_eth_burst_mode *mode); int mlx5_tx_burst_mode_get(struct rte_eth_dev *dev, uint16_t tx_queue_id, struct rte_eth_burst_mode *mode); -/* Vectorized version of mlx5_rxtx.c */ -int mlx5_rxq_check_vec_support(struct mlx5_rxq_data *rxq_data); -int mlx5_check_vec_rx_support(struct rte_eth_dev *dev); -uint16_t mlx5_rx_burst_vec(void *dpdk_txq, struct rte_mbuf **pkts, - uint16_t pkts_n); -uint16_t mlx5_rx_burst_mprq_vec(void *dpdk_txq, struct rte_mbuf **pkts, - uint16_t pkts_n); - /* mlx5_mr.c */ void mlx5_mr_flush_local_cache(struct mlx5_mr_ctrl *mr_ctrl); -uint32_t mlx5_rx_addr2mr_bh(struct mlx5_rxq_data *rxq, uintptr_t addr); uint32_t mlx5_tx_mb2mr_bh(struct mlx5_txq_data *txq, struct rte_mbuf *mb); uint32_t mlx5_tx_update_ext_mp(struct mlx5_txq_data *txq, uintptr_t addr, struct rte_mempool *mp); @@ -538,35 +286,6 @@ mlx5_mb2mp(struct rte_mbuf *buf) return buf->pool; } -/** - * Query LKey from a packet buffer for Rx. No need to flush local caches for Rx - * as mempool is pre-configured and static. - * - * @param rxq - * Pointer to Rx queue structure. - * @param addr - * Address to search. - * - * @return - * Searched LKey on success, UINT32_MAX on no match. - */ -static __rte_always_inline uint32_t -mlx5_rx_addr2mr(struct mlx5_rxq_data *rxq, uintptr_t addr) -{ - struct mlx5_mr_ctrl *mr_ctrl = &rxq->mr_ctrl; - uint32_t lkey; - - /* Linear search on MR cache array. */ - lkey = mlx5_mr_lookup_lkey(mr_ctrl->cache, &mr_ctrl->mru, - MLX5_MR_CACHE_N, addr); - if (likely(lkey != UINT32_MAX)) - return lkey; - /* Take slower bottom-half (Binary Search) on miss. */ - return mlx5_rx_addr2mr_bh(rxq, addr); -} - -#define mlx5_rx_mb2mr(rxq, mb) mlx5_rx_addr2mr(rxq, (uintptr_t)((mb)->buf_addr)) - /** * Query LKey from a packet buffer for Tx. If not found, add the mempool. * @@ -637,25 +356,6 @@ mlx5_tx_dbrec(struct mlx5_txq_data *txq, volatile struct mlx5_wqe *wqe) mlx5_tx_dbrec_cond_wmb(txq, wqe, 1); } -/** - * Convert timestamp from HW format to linear counter - * from Packet Pacing Clock Queue CQE timestamp format. - * - * @param sh - * Pointer to the device shared context. Might be needed - * to convert according current device configuration. - * @param ts - * Timestamp from CQE to convert. - * @return - * UTC in nanoseconds - */ -static __rte_always_inline uint64_t -mlx5_txpp_convert_rx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t ts) -{ - RTE_SET_USED(sh); - return (ts & UINT32_MAX) + (ts >> 32) * NS_PER_S; -} - /** * Convert timestamp from mbuf format to linear counter * of Clock Queue completions (24 bits) @@ -682,8 +382,8 @@ mlx5_txpp_convert_tx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t mts) * the service thread, data should be re-read. */ rte_compiler_barrier(); - ci = rte_atomic64_read(&sh->txpp.ts.ci_ts); - ts = rte_atomic64_read(&sh->txpp.ts.ts); + ci = __atomic_load_n(&sh->txpp.ts.ci_ts, __ATOMIC_RELAXED); + ts = __atomic_load_n(&sh->txpp.ts.ts, __ATOMIC_RELAXED); rte_compiler_barrier(); if (!((ts ^ ci) << (64 - MLX5_CQ_INDEX_WIDTH))) break; @@ -693,7 +393,8 @@ mlx5_txpp_convert_tx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t mts) mts -= ts; if (unlikely(mts >= UINT64_MAX / 2)) { /* We have negative integer, mts is in the past. */ - rte_atomic32_inc(&sh->txpp.err_ts_past); + __atomic_fetch_add(&sh->txpp.err_ts_past, + 1, __ATOMIC_RELAXED); return -1; } tick = sh->txpp.tick; @@ -702,7 +403,8 @@ mlx5_txpp_convert_tx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t mts) mts = (mts + tick - 1) / tick; if (unlikely(mts >= (1 << MLX5_CQ_INDEX_WIDTH) / 2 - 1)) { /* We have mts is too distant future. */ - rte_atomic32_inc(&sh->txpp.err_ts_future); + __atomic_fetch_add(&sh->txpp.err_ts_future, + 1, __ATOMIC_RELAXED); return -1; } mts <<= 64 - MLX5_CQ_INDEX_WIDTH; @@ -711,204 +413,4 @@ mlx5_txpp_convert_tx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t mts) return ci; } -/** - * Set timestamp in mbuf dynamic field. - * - * @param mbuf - * Structure to write into. - * @param offset - * Dynamic field offset in mbuf structure. - * @param timestamp - * Value to write. - */ -static __rte_always_inline void -mlx5_timestamp_set(struct rte_mbuf *mbuf, int offset, - rte_mbuf_timestamp_t timestamp) -{ - *RTE_MBUF_DYNFIELD(mbuf, offset, rte_mbuf_timestamp_t *) = timestamp; -} - -/** - * Replace MPRQ buffer. - * - * @param rxq - * Pointer to Rx queue structure. - * @param rq_idx - * RQ index to replace. - */ -static __rte_always_inline void -mprq_buf_replace(struct mlx5_rxq_data *rxq, uint16_t rq_idx) -{ - const uint32_t strd_n = 1 << rxq->strd_num_n; - struct mlx5_mprq_buf *rep = rxq->mprq_repl; - volatile struct mlx5_wqe_data_seg *wqe = - &((volatile struct mlx5_wqe_mprq *)rxq->wqes)[rq_idx].dseg; - struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[rq_idx]; - void *addr; - - if (__atomic_load_n(&buf->refcnt, __ATOMIC_RELAXED) > 1) { - MLX5_ASSERT(rep != NULL); - /* Replace MPRQ buf. */ - (*rxq->mprq_bufs)[rq_idx] = rep; - /* Replace WQE. */ - addr = mlx5_mprq_buf_addr(rep, strd_n); - wqe->addr = rte_cpu_to_be_64((uintptr_t)addr); - /* If there's only one MR, no need to replace LKey in WQE. */ - if (unlikely(mlx5_mr_btree_len(&rxq->mr_ctrl.cache_bh) > 1)) - wqe->lkey = mlx5_rx_addr2mr(rxq, (uintptr_t)addr); - /* Stash a mbuf for next replacement. */ - if (likely(!rte_mempool_get(rxq->mprq_mp, (void **)&rep))) - rxq->mprq_repl = rep; - else - rxq->mprq_repl = NULL; - /* Release the old buffer. */ - mlx5_mprq_buf_free(buf); - } else if (unlikely(rxq->mprq_repl == NULL)) { - struct mlx5_mprq_buf *rep; - - /* - * Currently, the MPRQ mempool is out of buffer - * and doing memcpy regardless of the size of Rx - * packet. Retry allocation to get back to - * normal. - */ - if (!rte_mempool_get(rxq->mprq_mp, (void **)&rep)) - rxq->mprq_repl = rep; - } -} - -/** - * Attach or copy MPRQ buffer content to a packet. - * - * @param rxq - * Pointer to Rx queue structure. - * @param pkt - * Pointer to a packet to fill. - * @param len - * Packet length. - * @param buf - * Pointer to a MPRQ buffer to take the data from. - * @param strd_idx - * Stride index to start from. - * @param strd_cnt - * Number of strides to consume. - */ -static __rte_always_inline enum mlx5_rqx_code -mprq_buf_to_pkt(struct mlx5_rxq_data *rxq, struct rte_mbuf *pkt, uint32_t len, - struct mlx5_mprq_buf *buf, uint16_t strd_idx, uint16_t strd_cnt) -{ - const uint32_t strd_n = 1 << rxq->strd_num_n; - const uint16_t strd_sz = 1 << rxq->strd_sz_n; - const uint16_t strd_shift = - MLX5_MPRQ_STRIDE_SHIFT_BYTE * rxq->strd_shift_en; - const int32_t hdrm_overlap = - len + RTE_PKTMBUF_HEADROOM - strd_cnt * strd_sz; - const uint32_t offset = strd_idx * strd_sz + strd_shift; - void *addr = RTE_PTR_ADD(mlx5_mprq_buf_addr(buf, strd_n), offset); - - /* - * Memcpy packets to the target mbuf if: - * - The size of packet is smaller than mprq_max_memcpy_len. - * - Out of buffer in the Mempool for Multi-Packet RQ. - * - The packet's stride overlaps a headroom and scatter is off. - */ - if (len <= rxq->mprq_max_memcpy_len || - rxq->mprq_repl == NULL || - (hdrm_overlap > 0 && !rxq->strd_scatter_en)) { - if (likely(len <= - (uint32_t)(pkt->buf_len - RTE_PKTMBUF_HEADROOM))) { - rte_memcpy(rte_pktmbuf_mtod(pkt, void *), - addr, len); - DATA_LEN(pkt) = len; - } else if (rxq->strd_scatter_en) { - struct rte_mbuf *prev = pkt; - uint32_t seg_len = RTE_MIN(len, (uint32_t) - (pkt->buf_len - RTE_PKTMBUF_HEADROOM)); - uint32_t rem_len = len - seg_len; - - rte_memcpy(rte_pktmbuf_mtod(pkt, void *), - addr, seg_len); - DATA_LEN(pkt) = seg_len; - while (rem_len) { - struct rte_mbuf *next = - rte_pktmbuf_alloc(rxq->mp); - - if (unlikely(next == NULL)) - return MLX5_RXQ_CODE_NOMBUF; - NEXT(prev) = next; - SET_DATA_OFF(next, 0); - addr = RTE_PTR_ADD(addr, seg_len); - seg_len = RTE_MIN(rem_len, (uint32_t) - (next->buf_len - RTE_PKTMBUF_HEADROOM)); - rte_memcpy - (rte_pktmbuf_mtod(next, void *), - addr, seg_len); - DATA_LEN(next) = seg_len; - rem_len -= seg_len; - prev = next; - ++NB_SEGS(pkt); - } - } else { - return MLX5_RXQ_CODE_DROPPED; - } - } else { - rte_iova_t buf_iova; - struct rte_mbuf_ext_shared_info *shinfo; - uint16_t buf_len = strd_cnt * strd_sz; - void *buf_addr; - - /* Increment the refcnt of the whole chunk. */ - __atomic_add_fetch(&buf->refcnt, 1, __ATOMIC_RELAXED); - MLX5_ASSERT(__atomic_load_n(&buf->refcnt, - __ATOMIC_RELAXED) <= strd_n + 1); - buf_addr = RTE_PTR_SUB(addr, RTE_PKTMBUF_HEADROOM); - /* - * MLX5 device doesn't use iova but it is necessary in a - * case where the Rx packet is transmitted via a - * different PMD. - */ - buf_iova = rte_mempool_virt2iova(buf) + - RTE_PTR_DIFF(buf_addr, buf); - shinfo = &buf->shinfos[strd_idx]; - rte_mbuf_ext_refcnt_set(shinfo, 1); - /* - * EXT_ATTACHED_MBUF will be set to pkt->ol_flags when - * attaching the stride to mbuf and more offload flags - * will be added below by calling rxq_cq_to_mbuf(). - * Other fields will be overwritten. - */ - rte_pktmbuf_attach_extbuf(pkt, buf_addr, buf_iova, - buf_len, shinfo); - /* Set mbuf head-room. */ - SET_DATA_OFF(pkt, RTE_PKTMBUF_HEADROOM); - MLX5_ASSERT(pkt->ol_flags == EXT_ATTACHED_MBUF); - MLX5_ASSERT(rte_pktmbuf_tailroom(pkt) >= - len - (hdrm_overlap > 0 ? hdrm_overlap : 0)); - DATA_LEN(pkt) = len; - /* - * Copy the last fragment of a packet (up to headroom - * size bytes) in case there is a stride overlap with - * a next packet's headroom. Allocate a separate mbuf - * to store this fragment and link it. Scatter is on. - */ - if (hdrm_overlap > 0) { - MLX5_ASSERT(rxq->strd_scatter_en); - struct rte_mbuf *seg = - rte_pktmbuf_alloc(rxq->mp); - - if (unlikely(seg == NULL)) - return MLX5_RXQ_CODE_NOMBUF; - SET_DATA_OFF(seg, 0); - rte_memcpy(rte_pktmbuf_mtod(seg, void *), - RTE_PTR_ADD(addr, len - hdrm_overlap), - hdrm_overlap); - DATA_LEN(seg) = hdrm_overlap; - DATA_LEN(pkt) = len - hdrm_overlap; - NEXT(pkt) = seg; - NB_SEGS(pkt) = 2; - } - } - return MLX5_RXQ_CODE_EXIT; -} - #endif /* RTE_PMD_MLX5_RXTX_H_ */