The PMD uses a public interface to allow applications to control the token pop mode. Supported token pop modes are as follows, and they impact core scheduling affinity for ldb ports.
AUTO_POP: Pop the CQ tokens immediately after dequeueing. DELAYED_POP: Pop CQ tokens after (dequeue_depth - 1) events are released. Supported on load-balanced ports only. DEFERRED_POP: Pop the CQ tokens during next dequeue operation. Signed-off-by: Timothy McDaniel <timothy.mcdan...@intel.com> --- drivers/event/dlb2/meson.build | 5 ++- drivers/event/dlb2/rte_pmd_dlb2.c | 39 +++++++++++++++++++++++ drivers/event/dlb2/rte_pmd_dlb2_event_version.map | 6 ++++ 3 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 drivers/event/dlb2/rte_pmd_dlb2.c diff --git a/drivers/event/dlb2/meson.build b/drivers/event/dlb2/meson.build index 492452e..4549a75 100644 --- a/drivers/event/dlb2/meson.build +++ b/drivers/event/dlb2/meson.build @@ -1,3 +1,4 @@ + # SPDX-License-Identifier: BSD-3-Clause # Copyright(c) 2019-2020 Intel Corporation @@ -6,7 +7,9 @@ sources = files('dlb2.c', 'dlb2_xstats.c', 'pf/dlb2_main.c', 'pf/dlb2_pf.c', - 'pf/base/dlb2_resource.c' + 'pf/base/dlb2_resource.c', + 'rte_pmd_dlb2.c' ) deps += ['mbuf', 'mempool', 'ring', 'bus_vdev', 'pci', 'bus_pci'] +install_headers('rte_pmd_dlb2.h') \ No newline at end of file diff --git a/drivers/event/dlb2/rte_pmd_dlb2.c b/drivers/event/dlb2/rte_pmd_dlb2.c new file mode 100644 index 0000000..b09b585 --- /dev/null +++ b/drivers/event/dlb2/rte_pmd_dlb2.c @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2020 Intel Corporation + */ + +#include <rte_eventdev.h> +#include <rte_eventdev_pmd.h> + +#include "rte_pmd_dlb2.h" +#include "dlb2_priv.h" +#include "dlb2_inline_fns.h" + +int +rte_pmd_dlb2_set_token_pop_mode(uint8_t dev_id, + uint8_t port_id, + enum dlb2_token_pop_mode mode) +{ + struct dlb2_eventdev *dlb2; + struct rte_eventdev *dev; + + RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL); + dev = &rte_eventdevs[dev_id]; + + dlb2 = dlb2_pmd_priv(dev); + + if (mode >= NUM_TOKEN_POP_MODES) + return -EINVAL; + + /* The event device must be configured, but not yet started */ + if (!dlb2->configured || dlb2->run_state != DLB2_RUN_STATE_STOPPED) + return -EINVAL; + + /* The token pop mode must be set before configuring the port */ + if (port_id >= dlb2->num_ports || dlb2->ev_ports[port_id].setup_done) + return -EINVAL; + + dlb2->ev_ports[port_id].qm_port.token_pop_mode = mode; + + return 0; +} diff --git a/drivers/event/dlb2/rte_pmd_dlb2_event_version.map b/drivers/event/dlb2/rte_pmd_dlb2_event_version.map index 299ae63..84b81a4 100644 --- a/drivers/event/dlb2/rte_pmd_dlb2_event_version.map +++ b/drivers/event/dlb2/rte_pmd_dlb2_event_version.map @@ -1,3 +1,9 @@ DPDK_21.0 { local: *; }; + +EXPERIMENTAL { + global: + + rte_pmd_dlb2_set_token_pop_mode; +}; -- 2.6.4