#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
+#include <errno.h>
#include <net/if.h>
/* Verbs header. */
#include <rte_ethdev.h>
#include <rte_pci.h>
#include <rte_common.h>
+#include <rte_kvargs.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-pedantic"
#endif
#include "mlx5_autoconf.h"
#include "mlx5_defs.h"
+/* Device parameter to enable RX completion queue compression. */
+#define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
+
+/* Device parameter to configure inline send. */
+#define MLX5_TXQ_INLINE "txq_inline"
+
+/*
+ * Device parameter to configure the number of TX queues threshold for
+ * enabling inline send.
+ */
+#define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
+
+/* Device parameter to enable multi-packet send WQEs. */
+#define MLX5_TXQ_MPW_EN "txq_mpw_en"
+
/**
* Retrieve integer value from environment variable.
*
return ret;
}
+/**
+ * Verify and store value for device argument.
+ *
+ * @param[in] key
+ * Key argument to verify.
+ * @param[in] val
+ * Value associated with key.
+ * @param opaque
+ * User data.
+ *
+ * @return
+ * 0 on success, negative errno value on failure.
+ */
+static int
+mlx5_args_check(const char *key, const char *val, void *opaque)
+{
+ struct priv *priv = opaque;
+ unsigned long tmp;
+
+ errno = 0;
+ tmp = strtoul(val, NULL, 0);
+ if (errno) {
+ WARN("%s: \"%s\" is not a valid integer", key, val);
+ return errno;
+ }
+ if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) {
+ priv->cqe_comp = !!tmp;
+ } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) {
+ priv->txq_inline = tmp;
+ } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
+ priv->txqs_inline = tmp;
+ } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
+ priv->mps = !!tmp;
+ } else {
+ WARN("%s: unknown parameter", key);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * Parse device parameters.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param devargs
+ * Device arguments structure.
+ *
+ * @return
+ * 0 on success, errno value on failure.
+ */
+static int
+mlx5_args(struct priv *priv, struct rte_devargs *devargs)
+{
+ const char **params = (const char *[]){
+ MLX5_RXQ_CQE_COMP_EN,
+ MLX5_TXQ_INLINE,
+ MLX5_TXQS_MIN_INLINE,
+ MLX5_TXQ_MPW_EN,
+ NULL,
+ };
+ struct rte_kvargs *kvlist;
+ int ret = 0;
+ int i;
+
+ if (devargs == NULL)
+ return 0;
+ /* Following UGLY cast is done to pass checkpatch. */
+ kvlist = rte_kvargs_parse(devargs->args, params);
+ if (kvlist == NULL)
+ return 0;
+ /* Process parameters. */
+ for (i = 0; (params[i] != NULL); ++i) {
+ if (rte_kvargs_count(kvlist, params[i])) {
+ ret = rte_kvargs_process(kvlist, params[i],
+ mlx5_args_check, priv);
+ if (ret != 0)
+ return ret;
+ }
+ }
+ rte_kvargs_free(kvlist);
+ return 0;
+}
+
static struct eth_driver mlx5_driver;
/**
priv->port = port;
priv->pd = pd;
priv->mtu = ETHER_MTU;
+ priv->mps = mps; /* Enable MPW by default if supported. */
+ priv->cqe_comp = 1; /* Enable compression by default. */
+ err = mlx5_args(priv, pci_dev->devargs);
+ if (err) {
+ ERROR("failed to process device arguments: %s",
+ strerror(err));
+ goto port_error;
+ }
if (ibv_exp_query_device(ctx, &exp_device_attr)) {
ERROR("ibv_exp_query_device() failed");
goto port_error;
priv_get_num_vfs(priv, &num_vfs);
priv->sriov = (num_vfs || sriov);
- priv->mps = mps;
+ if (priv->mps && !mps) {
+ ERROR("multi-packet send not supported on this device"
+ " (" MLX5_TXQ_MPW_EN ")");
+ err = ENOTSUP;
+ goto port_error;
+ }
/* Allocate and register default RSS hash keys. */
priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
sizeof((*priv->rss_conf)[0]), 0);
static struct rte_driver rte_mlx5_driver = {
.type = PMD_PDEV,
- .name = MLX5_DRIVER_NAME,
.init = rte_mlx5_pmd_init,
};
-PMD_REGISTER_DRIVER(rte_mlx5_driver)
+PMD_REGISTER_DRIVER(rte_mlx5_driver, net_mlx5);
+DRIVER_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);