net/mlx5: add option to configure FCS or decapsulation

[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx.h

diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 974a847..5116a15 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -109,6 +109,7 @@ enum mlx5_rxq_err_state {
 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). */
@@ -148,6 +149,7 @@ struct mlx5_rxq_data {
        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. */
@@ -442,6 +444,8 @@ struct mlx5_hrxq *mlx5_hrxq_drop_new(struct rte_eth_dev *dev);
 void mlx5_hrxq_drop_release(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);
+
 
 /* mlx5_txq.c */
 
@@ -719,4 +723,59 @@ mlx5_txpp_convert_rx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t ts)
        return (ts & UINT32_MAX) + (ts >> 32) * NS_PER_S;
 }
 
+/**
+ * Convert timestamp from mbuf format to linear counter
+ * of Clock Queue completions (24 bits)
+ *
+ * @param sh
+ *   Pointer to the device shared context to fetch Tx
+ *   packet pacing timestamp and parameters.
+ * @param ts
+ *   Timestamp from mbuf to convert.
+ * @return
+ *   positive or zero value - completion ID to wait
+ *   negative value - conversion error
+ */
+static __rte_always_inline int32_t
+mlx5_txpp_convert_tx_ts(struct mlx5_dev_ctx_shared *sh, uint64_t mts)
+{
+       uint64_t ts, ci;
+       uint32_t tick;
+
+       do {
+               /*
+                * Read atomically two uint64_t fields and compare lsb bits.
+                * It there is no match - the timestamp was updated in
+                * 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);
+               rte_compiler_barrier();
+               if (!((ts ^ ci) << (64 - MLX5_CQ_INDEX_WIDTH)))
+                       break;
+       } while (true);
+       /* Perform the skew correction, positive value to send earlier. */
+       mts -= sh->txpp.skew;
+       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);
+               return -1;
+       }
+       tick = sh->txpp.tick;
+       MLX5_ASSERT(tick);
+       /* Convert delta to completions, round up. */
+       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);
+               return -1;
+       }
+       mts <<= 64 - MLX5_CQ_INDEX_WIDTH;
+       ci += mts;
+       ci >>= 64 - MLX5_CQ_INDEX_WIDTH;
+       return ci;
+}
+
 #endif /* RTE_PMD_MLX5_RXTX_H_ */