Function mlx5_setup_tis

dpdk/drivers/net/mlx5/mlx5.c:1307–1352

* Set up multiple TISs with different affinities according to * number of bonding ports * * @param priv * Pointer of shared context. * * @return * Zero on success, -1 otherwise. */

 * Zero on success, -1 otherwise.
 */
static int
mlx5_setup_tis(struct mlx5_dev_ctx_shared *sh)
{
	struct mlx5_devx_lag_context lag_ctx = { 0 };
	struct mlx5_devx_tis_attr tis_attr = { 0 };
	int i;

	tis_attr.transport_domain = sh->td->id;
	if (sh->bond.n_port) {
		if (!mlx5_devx_cmd_query_lag(sh->cdev->ctx, &lag_ctx)) {
			sh->lag.tx_remap_affinity[0] =
				lag_ctx.tx_remap_affinity_1;
			sh->lag.tx_remap_affinity[1] =
				lag_ctx.tx_remap_affinity_2;
			sh->lag.affinity_mode = lag_ctx.port_select_mode;
		} else {
			DRV_LOG(ERR, "Failed to query lag affinity.");
			return -1;
		}
		if (sh->lag.affinity_mode == MLX5_LAG_MODE_TIS)
			DRV_LOG(DEBUG, "LAG number of ports : %d, affinity_1 & 2 : pf%d & %d.\n",
				sh->bond.n_port, lag_ctx.tx_remap_affinity_1,
				lag_ctx.tx_remap_affinity_2);
		else if (sh->lag.affinity_mode == MLX5_LAG_MODE_HASH)
			DRV_LOG(INFO, "Device %s enabled HW hash based LAG.",
					sh->ibdev_name);
	}
	for (i = 0; i <= sh->bond.n_port; i++) {
		/*
		 * lag_tx_port_affinity: 0 auto-selection, 1 PF1, 2 PF2 vice versa.
		 * Each TIS binds to one PF by setting lag_tx_port_affinity (> 0).
		 * Once LAG enabled, we create multiple TISs and bind each one to
		 * different PFs, then TIS[i+1] gets affinity i+1 and goes to PF i+1.
		 * TIS[0] is reserved for HW Hash mode.
		 */
		tis_attr.lag_tx_port_affinity = i;
		sh->tis[i] = mlx5_devx_cmd_create_tis(sh->cdev->ctx, &tis_attr);
		if (!sh->tis[i]) {
			DRV_LOG(ERR, "Failed to create TIS %d/%d for [bonding] device"
				" %s.", i, sh->bond.n_port,
				sh->ibdev_name);
			return -1;
		}
	}
	return 0;
}

/**
 * Verify and store value for share device argument.