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net/dpaa2: support custom hash key

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The DPAA2 hw can support a special offset based
configuration to program distribution on hash.
This is for all cases, which are not directly supported.

e.g. HASH based distribution on inner ip header
of a GRE tunnel.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
This commit is contained in:
Nipun Gupta 2019-01-11 12:24:59 +00:00 committed by Ferruh Yigit
parent 1def64c2d7
commit 5f82296249
3 changed files with 80 additions and 1 deletions
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52
drivers/net/dpaa2/base/dpaa2_hw_dpni.c
View File

@ -1,7 +1,7 @@
/* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
* Copyright 2016 NXP
* Copyright 2016-2018 NXP
*
*/
@ -28,6 +28,56 @@ dpaa2_distset_to_dpkg_profile_cfg(
uint64_t req_dist_set,
struct dpkg_profile_cfg *kg_cfg);
int
rte_pmd_dpaa2_set_custom_hash(uint16_t port_id,
uint16_t offset,
uint8_t size)
{
struct rte_eth_dev *eth_dev = &rte_eth_devices[port_id];
struct dpaa2_dev_priv *priv = eth_dev->data->dev_private;
struct fsl_mc_io *dpni = priv->hw;
struct dpni_rx_tc_dist_cfg tc_cfg;
struct dpkg_profile_cfg kg_cfg;
void *p_params;
int ret, tc_index = 0;
p_params = rte_zmalloc(
NULL, DIST_PARAM_IOVA_SIZE, RTE_CACHE_LINE_SIZE);
if (!p_params) {
DPAA2_PMD_ERR("Unable to allocate flow-dist parameters");
return -ENOMEM;
}
kg_cfg.extracts[0].type = DPKG_EXTRACT_FROM_DATA;
kg_cfg.extracts[0].extract.from_data.offset = offset;
kg_cfg.extracts[0].extract.from_data.size = size;
kg_cfg.num_extracts = 1;
ret = dpkg_prepare_key_cfg(&kg_cfg, p_params);
if (ret) {
DPAA2_PMD_ERR("Unable to prepare extract parameters");
rte_free(p_params);
return ret;
}
memset(&tc_cfg, 0, sizeof(struct dpni_rx_tc_dist_cfg));
tc_cfg.key_cfg_iova = (size_t)(DPAA2_VADDR_TO_IOVA(p_params));
tc_cfg.dist_size = eth_dev->data->nb_rx_queues;
tc_cfg.dist_mode = DPNI_DIST_MODE_HASH;
ret = dpni_set_rx_tc_dist(dpni, CMD_PRI_LOW, priv->token, tc_index,
&tc_cfg);
rte_free(p_params);
if (ret) {
DPAA2_PMD_ERR(
"Setting distribution for Rx failed with err: %d",
ret);
return ret;
}
return 0;
}
int
dpaa2_setup_flow_dist(struct rte_eth_dev *eth_dev,
uint64_t req_dist_set)

28
drivers/net/dpaa2/rte_pmd_dpaa2.h
View File

@ -59,4 +59,32 @@ rte_pmd_dpaa2_mux_flow_create(uint32_t dpdmux_id,
struct rte_flow_item *pattern[],
struct rte_flow_action *actions[]);
/**
* @warning
* @b EXPERIMENTAL: this API may change, or be removed, without prior notice
*
* Create a custom hash key on basis of offset of start of packet and size.
* for e.g. if we need GRE packets (non-vlan and without any extra headers)
* to be hashed on basis of inner IP header, we will provide offset as:
* 14 (eth) + 20 (IP) + 4 (GRE) + 12 (Inner Src offset) = 50 and size
* as 8 bytes.
*
* @param port_id
* The port identifier of the Ethernet device.
* @param offset
* Offset from the start of packet which needs to be included to
* calculate hash
* @param size
* Size of the hash input key
*
* @return
* - 0 if successful.
* - Negative in case of failure.
*/
__rte_experimental
int
rte_pmd_dpaa2_set_custom_hash(uint16_t port_id,
uint16_t offset,
uint8_t size);
#endif /* _RTE_PMD_DPAA2_H */

1
drivers/net/dpaa2/rte_pmd_dpaa2_version.map
View File

@ -15,5 +15,6 @@ EXPERIMENTAL {
global:
rte_pmd_dpaa2_mux_flow_create;
rte_pmd_dpaa2_set_custom_hash;
rte_pmd_dpaa2_set_timestamp;
} DPDK_17.11;