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34 #ifndef RTE_PMD_MLX5_RXTX_H_
35 #define RTE_PMD_MLX5_RXTX_H_
41 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
43 #pragma GCC diagnostic ignored "-pedantic"
45 #include <infiniband/verbs.h>
47 #pragma GCC diagnostic error "-pedantic"
50 /* DPDK headers don't like -pedantic. */
52 #pragma GCC diagnostic ignored "-pedantic"
55 #include <rte_mempool.h>
57 #pragma GCC diagnostic error "-pedantic"
60 #include "mlx5_utils.h"
62 #include "mlx5_autoconf.h"
63 #include "mlx5_defs.h"
65 struct mlx5_rxq_stats {
66 unsigned int idx; /**< Mapping index. */
67 #ifdef MLX5_PMD_SOFT_COUNTERS
68 uint64_t ipackets; /**< Total of successfully received packets. */
69 uint64_t ibytes; /**< Total of successfully received bytes. */
71 uint64_t idropped; /**< Total of packets dropped when RX ring full. */
72 uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */
75 struct mlx5_txq_stats {
76 unsigned int idx; /**< Mapping index. */
77 #ifdef MLX5_PMD_SOFT_COUNTERS
78 uint64_t opackets; /**< Total of successfully sent packets. */
79 uint64_t obytes; /**< Total of successfully sent bytes. */
81 uint64_t odropped; /**< Total of packets not sent when TX ring full. */
84 /* RX element (scattered packets). */
86 struct ibv_sge sges[MLX5_PMD_SGE_WR_N]; /* Scatter/Gather Elements. */
87 struct rte_mbuf *bufs[MLX5_PMD_SGE_WR_N]; /* SGEs buffers. */
92 struct ibv_sge sge; /* Scatter/Gather Element. */
93 struct rte_mbuf *buf; /* SGE buffer. */
96 /* Flow director queue structure. */
98 struct ibv_qp *qp; /* Associated RX QP. */
99 struct ibv_exp_rwq_ind_table *ind_table; /* Indirection table. */
104 /* RX queue descriptor. */
106 struct priv *priv; /* Back pointer to private data. */
107 struct rte_mempool *mp; /* Memory Pool for allocations. */
108 struct ibv_mr *mr; /* Memory Region (for mp). */
109 struct ibv_cq *cq; /* Completion Queue. */
110 struct ibv_exp_wq *wq; /* Work Queue. */
111 struct ibv_exp_wq_family *if_wq; /* WQ burst interface. */
112 struct ibv_exp_cq_family *if_cq; /* CQ interface. */
113 unsigned int port_id; /* Port ID for incoming packets. */
114 unsigned int elts_n; /* (*elts)[] length. */
115 unsigned int elts_head; /* Current index in (*elts)[]. */
117 struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
118 struct rxq_elt (*no_sp)[]; /* RX elements. */
120 unsigned int sp:1; /* Use scattered RX elements. */
121 unsigned int csum:1; /* Enable checksum offloading. */
122 unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
123 uint32_t mb_len; /* Length of a mp-issued mbuf. */
124 struct mlx5_rxq_stats stats; /* RX queue counters. */
125 unsigned int socket; /* CPU socket ID for allocations. */
126 struct ibv_exp_res_domain *rd; /* Resource Domain. */
127 struct fdir_queue fdir_queue; /* Flow director queue. */
130 /* Hash RX queue types. */
135 #ifdef HAVE_FLOW_SPEC_IPV6
139 #endif /* HAVE_FLOW_SPEC_IPV6 */
143 /* Flow structure with Ethernet specification. It is packed to prevent padding
144 * between attr and spec as this layout is expected by libibverbs. */
145 struct flow_attr_spec_eth {
146 struct ibv_exp_flow_attr attr;
147 struct ibv_exp_flow_spec_eth spec;
148 } __attribute__((packed));
150 /* Define a struct flow_attr_spec_eth object as an array of at least
151 * "size" bytes. Room after the first index is normally used to store
152 * extra flow specifications. */
153 #define FLOW_ATTR_SPEC_ETH(name, size) \
154 struct flow_attr_spec_eth name \
155 [((size) / sizeof(struct flow_attr_spec_eth)) + \
156 !!((size) % sizeof(struct flow_attr_spec_eth))]
158 /* Initialization data for hash RX queue. */
159 struct hash_rxq_init {
160 uint64_t hash_fields; /* Fields that participate in the hash. */
161 uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
162 unsigned int flow_priority; /* Flow priority to use. */
165 enum ibv_exp_flow_spec_type type;
168 struct ibv_exp_flow_spec_tcp_udp tcp_udp;
169 struct ibv_exp_flow_spec_ipv4 ipv4;
170 #ifdef HAVE_FLOW_SPEC_IPV6
171 struct ibv_exp_flow_spec_ipv6 ipv6;
172 #endif /* HAVE_FLOW_SPEC_IPV6 */
173 struct ibv_exp_flow_spec_eth eth;
174 } flow_spec; /* Flow specification template. */
175 const struct hash_rxq_init *underlayer; /* Pointer to underlayer. */
178 /* Initialization data for indirection table. */
179 struct ind_table_init {
180 unsigned int max_size; /* Maximum number of WQs. */
181 /* Hash RX queues using this table. */
182 unsigned int hash_types;
183 unsigned int hash_types_n;
186 /* Initialization data for special flows. */
187 struct special_flow_init {
188 uint8_t dst_mac_val[6];
189 uint8_t dst_mac_mask[6];
190 unsigned int hash_types;
193 enum hash_rxq_flow_type {
194 HASH_RXQ_FLOW_TYPE_PROMISC,
195 HASH_RXQ_FLOW_TYPE_ALLMULTI,
196 HASH_RXQ_FLOW_TYPE_BROADCAST,
197 HASH_RXQ_FLOW_TYPE_IPV6MULTI,
198 HASH_RXQ_FLOW_TYPE_MAC,
202 static inline const char *
203 hash_rxq_flow_type_str(enum hash_rxq_flow_type flow_type)
206 case HASH_RXQ_FLOW_TYPE_PROMISC:
207 return "promiscuous";
208 case HASH_RXQ_FLOW_TYPE_ALLMULTI:
209 return "allmulticast";
210 case HASH_RXQ_FLOW_TYPE_BROADCAST:
212 case HASH_RXQ_FLOW_TYPE_IPV6MULTI:
213 return "IPv6 multicast";
214 case HASH_RXQ_FLOW_TYPE_MAC:
222 struct priv *priv; /* Back pointer to private data. */
223 struct ibv_qp *qp; /* Hash RX QP. */
224 enum hash_rxq_type type; /* Hash RX queue type. */
225 /* MAC flow steering rules, one per VLAN ID. */
226 struct ibv_exp_flow *mac_flow[MLX5_MAX_MAC_ADDRESSES][MLX5_MAX_VLAN_IDS];
227 struct ibv_exp_flow *special_flow[MLX5_MAX_SPECIAL_FLOWS];
232 struct rte_mbuf *buf;
235 /* Linear buffer type. It is used when transmitting buffers with too many
236 * segments that do not fit the hardware queue (see max_send_sge).
237 * Extra segments are copied (linearized) in such buffers, replacing the
238 * last SGE during TX.
239 * The size is arbitrary but large enough to hold a jumbo frame with
240 * 8 segments considering mbuf.buf_len is about 2048 bytes. */
241 typedef uint8_t linear_t[16384];
243 /* TX queue descriptor. */
245 struct priv *priv; /* Back pointer to private data. */
247 const struct rte_mempool *mp; /* Cached Memory Pool. */
248 struct ibv_mr *mr; /* Memory Region (for mp). */
249 uint32_t lkey; /* mr->lkey */
250 } mp2mr[MLX5_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
251 struct ibv_cq *cq; /* Completion Queue. */
252 struct ibv_qp *qp; /* Queue Pair. */
253 struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
254 struct ibv_exp_cq_family *if_cq; /* CQ interface. */
255 #if MLX5_PMD_MAX_INLINE > 0
256 uint32_t max_inline; /* Max inline send size <= MLX5_PMD_MAX_INLINE. */
258 unsigned int elts_n; /* (*elts)[] length. */
259 struct txq_elt (*elts)[]; /* TX elements. */
260 unsigned int elts_head; /* Current index in (*elts)[]. */
261 unsigned int elts_tail; /* First element awaiting completion. */
262 unsigned int elts_comp; /* Number of completion requests. */
263 unsigned int elts_comp_cd; /* Countdown for next completion request. */
264 unsigned int elts_comp_cd_init; /* Initial value for countdown. */
265 struct mlx5_txq_stats stats; /* TX queue counters. */
266 linear_t (*elts_linear)[]; /* Linearized buffers. */
267 struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */
268 unsigned int socket; /* CPU socket ID for allocations. */
269 struct ibv_exp_res_domain *rd; /* Resource Domain. */
274 extern const struct hash_rxq_init hash_rxq_init[];
275 extern const unsigned int hash_rxq_init_n;
277 extern uint8_t rss_hash_default_key[];
278 extern const size_t rss_hash_default_key_len;
280 size_t priv_flow_attr(struct priv *, struct ibv_exp_flow_attr *,
281 size_t, enum hash_rxq_type);
282 int priv_create_hash_rxqs(struct priv *);
283 void priv_destroy_hash_rxqs(struct priv *);
284 int priv_allow_flow_type(struct priv *, enum hash_rxq_flow_type);
285 int priv_rehash_flows(struct priv *);
286 void rxq_cleanup(struct rxq *);
287 int rxq_rehash(struct rte_eth_dev *, struct rxq *);
288 int rxq_setup(struct rte_eth_dev *, struct rxq *, uint16_t, unsigned int,
289 const struct rte_eth_rxconf *, struct rte_mempool *);
290 int mlx5_rx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int,
291 const struct rte_eth_rxconf *, struct rte_mempool *);
292 void mlx5_rx_queue_release(void *);
296 void txq_cleanup(struct txq *);
297 int mlx5_tx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int,
298 const struct rte_eth_txconf *);
299 void mlx5_tx_queue_release(void *);
303 void txq_mp2mr_iter(const struct rte_mempool *, void *);
304 uint16_t mlx5_tx_burst(void *, struct rte_mbuf **, uint16_t);
305 uint16_t mlx5_rx_burst_sp(void *, struct rte_mbuf **, uint16_t);
306 uint16_t mlx5_rx_burst(void *, struct rte_mbuf **, uint16_t);
307 uint16_t removed_tx_burst(void *, struct rte_mbuf **, uint16_t);
308 uint16_t removed_rx_burst(void *, struct rte_mbuf **, uint16_t);
310 #endif /* RTE_PMD_MLX5_RXTX_H_ */