net/mlx4: add RSS flow rule action support

[dpdk.git] / drivers / net / mlx4 / mlx4.c

diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 52f8d51..0db9a19 100644 (file)
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -50,6 +50,7 @@
 #pragma GCC diagnostic ignored "-Wpedantic"
 #endif
 #include <infiniband/verbs.h>
+#include <infiniband/mlx4dv.h>
 #ifdef PEDANTIC
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
@@ -99,8 +100,20 @@ mlx4_dev_configure(struct rte_eth_dev *dev)
 {
        struct priv *priv = dev->data->dev_private;
        struct rte_flow_error error;
+       uint8_t log2_range = rte_log2_u32(dev->data->nb_rx_queues);
        int ret;
 
+       /* Prepare range for RSS contexts before creating the first WQ. */
+       ret = mlx4dv_set_context_attr(priv->ctx,
+                                     MLX4DV_SET_CTX_ATTR_LOG_WQS_RANGE_SZ,
+                                     &log2_range);
+       if (ret) {
+               ERROR("cannot set up range size for RSS context to %u"
+                     " (for %u Rx queues), error: %s",
+                     1 << log2_range, dev->data->nb_rx_queues, strerror(ret));
+               rte_errno = ret;
+               return -ret;
+       }
        /* Prepare internal flow rules. */
        ret = mlx4_flow_sync(priv, &error);
        if (ret) {