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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_cq *cq; /* Completion Queue. */
109 struct ibv_exp_wq *wq; /* Work Queue. */
110 int32_t (*poll)(); /* Verbs poll function. */
111 int32_t (*recv)(); /* Verbs receive function. */
112 unsigned int port_id; /* Port ID for incoming packets. */
113 unsigned int elts_n; /* (*elts)[] length. */
114 unsigned int elts_head; /* Current index in (*elts)[]. */
115 unsigned int sp:1; /* Use scattered RX elements. */
116 unsigned int csum:1; /* Enable checksum offloading. */
117 unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
118 unsigned int vlan_strip:1; /* Enable VLAN stripping. */
120 struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
121 struct rxq_elt (*no_sp)[]; /* RX elements. */
123 uint32_t mb_len; /* Length of a mp-issued mbuf. */
124 unsigned int socket; /* CPU socket ID for allocations. */
125 struct mlx5_rxq_stats stats; /* RX queue counters. */
126 struct ibv_exp_res_domain *rd; /* Resource Domain. */
127 struct fdir_queue fdir_queue; /* Flow director queue. */
128 struct ibv_mr *mr; /* Memory Region (for mp). */
129 struct ibv_exp_wq_family *if_wq; /* WQ burst interface. */
130 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
131 struct ibv_exp_cq_family_v1 *if_cq; /* CQ interface. */
132 #else /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
133 struct ibv_exp_cq_family *if_cq; /* CQ interface. */
134 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
137 /* Hash RX queue types. */
142 #ifdef HAVE_FLOW_SPEC_IPV6
146 #endif /* HAVE_FLOW_SPEC_IPV6 */
150 /* Flow structure with Ethernet specification. It is packed to prevent padding
151 * between attr and spec as this layout is expected by libibverbs. */
152 struct flow_attr_spec_eth {
153 struct ibv_exp_flow_attr attr;
154 struct ibv_exp_flow_spec_eth spec;
155 } __attribute__((packed));
157 /* Define a struct flow_attr_spec_eth object as an array of at least
158 * "size" bytes. Room after the first index is normally used to store
159 * extra flow specifications. */
160 #define FLOW_ATTR_SPEC_ETH(name, size) \
161 struct flow_attr_spec_eth name \
162 [((size) / sizeof(struct flow_attr_spec_eth)) + \
163 !!((size) % sizeof(struct flow_attr_spec_eth))]
165 /* Initialization data for hash RX queue. */
166 struct hash_rxq_init {
167 uint64_t hash_fields; /* Fields that participate in the hash. */
168 uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
169 unsigned int flow_priority; /* Flow priority to use. */
172 enum ibv_exp_flow_spec_type type;
175 struct ibv_exp_flow_spec_tcp_udp tcp_udp;
176 struct ibv_exp_flow_spec_ipv4 ipv4;
177 #ifdef HAVE_FLOW_SPEC_IPV6
178 struct ibv_exp_flow_spec_ipv6 ipv6;
179 #endif /* HAVE_FLOW_SPEC_IPV6 */
180 struct ibv_exp_flow_spec_eth eth;
181 } flow_spec; /* Flow specification template. */
182 const struct hash_rxq_init *underlayer; /* Pointer to underlayer. */
185 /* Initialization data for indirection table. */
186 struct ind_table_init {
187 unsigned int max_size; /* Maximum number of WQs. */
188 /* Hash RX queues using this table. */
189 unsigned int hash_types;
190 unsigned int hash_types_n;
193 /* Initialization data for special flows. */
194 struct special_flow_init {
195 uint8_t dst_mac_val[6];
196 uint8_t dst_mac_mask[6];
197 unsigned int hash_types;
198 unsigned int per_vlan:1;
201 enum hash_rxq_flow_type {
202 HASH_RXQ_FLOW_TYPE_PROMISC,
203 HASH_RXQ_FLOW_TYPE_ALLMULTI,
204 HASH_RXQ_FLOW_TYPE_BROADCAST,
205 HASH_RXQ_FLOW_TYPE_IPV6MULTI,
206 HASH_RXQ_FLOW_TYPE_MAC,
210 static inline const char *
211 hash_rxq_flow_type_str(enum hash_rxq_flow_type flow_type)
214 case HASH_RXQ_FLOW_TYPE_PROMISC:
215 return "promiscuous";
216 case HASH_RXQ_FLOW_TYPE_ALLMULTI:
217 return "allmulticast";
218 case HASH_RXQ_FLOW_TYPE_BROADCAST:
220 case HASH_RXQ_FLOW_TYPE_IPV6MULTI:
221 return "IPv6 multicast";
222 case HASH_RXQ_FLOW_TYPE_MAC:
230 struct priv *priv; /* Back pointer to private data. */
231 struct ibv_qp *qp; /* Hash RX QP. */
232 enum hash_rxq_type type; /* Hash RX queue type. */
233 /* MAC flow steering rules, one per VLAN ID. */
234 struct ibv_exp_flow *mac_flow[MLX5_MAX_MAC_ADDRESSES][MLX5_MAX_VLAN_IDS];
235 struct ibv_exp_flow *special_flow
236 [MLX5_MAX_SPECIAL_FLOWS][MLX5_MAX_VLAN_IDS];
241 struct rte_mbuf *buf;
244 /* Linear buffer type. It is used when transmitting buffers with too many
245 * segments that do not fit the hardware queue (see max_send_sge).
246 * Extra segments are copied (linearized) in such buffers, replacing the
247 * last SGE during TX.
248 * The size is arbitrary but large enough to hold a jumbo frame with
249 * 8 segments considering mbuf.buf_len is about 2048 bytes. */
250 typedef uint8_t linear_t[16384];
252 /* TX queue descriptor. */
254 struct priv *priv; /* Back pointer to private data. */
255 int32_t (*poll_cnt)(struct ibv_cq *cq, uint32_t max);
256 int (*send_pending)();
257 #if MLX5_PMD_MAX_INLINE > 0
258 int (*send_pending_inline)();
260 #if MLX5_PMD_SGE_WR_N > 1
261 int (*send_pending_sg_list)();
263 int (*send_flush)(struct ibv_qp *qp);
264 struct ibv_cq *cq; /* Completion Queue. */
265 struct ibv_qp *qp; /* Queue Pair. */
266 struct txq_elt (*elts)[]; /* TX elements. */
267 #if MLX5_PMD_MAX_INLINE > 0
268 uint32_t max_inline; /* Max inline send size <= MLX5_PMD_MAX_INLINE. */
270 unsigned int elts_n; /* (*elts)[] length. */
271 unsigned int elts_head; /* Current index in (*elts)[]. */
272 unsigned int elts_tail; /* First element awaiting completion. */
273 unsigned int elts_comp; /* Number of completion requests. */
274 unsigned int elts_comp_cd; /* Countdown for next completion request. */
275 unsigned int elts_comp_cd_init; /* Initial value for countdown. */
277 const struct rte_mempool *mp; /* Cached Memory Pool. */
278 struct ibv_mr *mr; /* Memory Region (for mp). */
279 uint32_t lkey; /* mr->lkey */
280 } mp2mr[MLX5_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
281 struct mlx5_txq_stats stats; /* TX queue counters. */
282 /* Elements used only for init part are here. */
283 linear_t (*elts_linear)[]; /* Linearized buffers. */
284 struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */
285 struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
286 struct ibv_exp_cq_family *if_cq; /* CQ interface. */
287 struct ibv_exp_res_domain *rd; /* Resource Domain. */
288 unsigned int socket; /* CPU socket ID for allocations. */
293 extern const struct hash_rxq_init hash_rxq_init[];
294 extern const unsigned int hash_rxq_init_n;
296 extern uint8_t rss_hash_default_key[];
297 extern const size_t rss_hash_default_key_len;
299 size_t priv_flow_attr(struct priv *, struct ibv_exp_flow_attr *,
300 size_t, enum hash_rxq_type);
301 int priv_create_hash_rxqs(struct priv *);
302 void priv_destroy_hash_rxqs(struct priv *);
303 int priv_allow_flow_type(struct priv *, enum hash_rxq_flow_type);
304 int priv_rehash_flows(struct priv *);
305 void rxq_cleanup(struct rxq *);
306 int rxq_rehash(struct rte_eth_dev *, struct rxq *);
307 int rxq_setup(struct rte_eth_dev *, struct rxq *, uint16_t, unsigned int,
308 const struct rte_eth_rxconf *, struct rte_mempool *);
309 int mlx5_rx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int,
310 const struct rte_eth_rxconf *, struct rte_mempool *);
311 void mlx5_rx_queue_release(void *);
312 uint16_t mlx5_rx_burst_secondary_setup(void *dpdk_rxq, struct rte_mbuf **pkts,
318 void txq_cleanup(struct txq *);
319 int txq_setup(struct rte_eth_dev *dev, struct txq *txq, uint16_t desc,
320 unsigned int socket, const struct rte_eth_txconf *conf);
322 int mlx5_tx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int,
323 const struct rte_eth_txconf *);
324 void mlx5_tx_queue_release(void *);
325 uint16_t mlx5_tx_burst_secondary_setup(void *dpdk_txq, struct rte_mbuf **pkts,
330 struct ibv_mr *mlx5_mp2mr(struct ibv_pd *, const struct rte_mempool *);
331 void txq_mp2mr_iter(const struct rte_mempool *, void *);
332 uint16_t mlx5_tx_burst(void *, struct rte_mbuf **, uint16_t);
333 uint16_t mlx5_rx_burst_sp(void *, struct rte_mbuf **, uint16_t);
334 uint16_t mlx5_rx_burst(void *, struct rte_mbuf **, uint16_t);
335 uint16_t removed_tx_burst(void *, struct rte_mbuf **, uint16_t);
336 uint16_t removed_rx_burst(void *, struct rte_mbuf **, uint16_t);
338 #endif /* RTE_PMD_MLX5_RXTX_H_ */