[dpdk-dev] [PATCH v3] net/i40e: adjust the RSS table
Xiaoyun Li
xiaoyun.li at intel.com
Mon Dec 3 09:26:32 CET 2018
When starting the device, the RSS table is initialized. So the RSS
update before device_start would be overwritten. This patch allows users
to update the RSS reta table before device_start and adjusts the order
to set entries sequentially.
Signed-off-by: Xiaoyun Li <xiaoyun.li at intel.com>
---
v3:
* Rename the variable and fix typo in commit log.
v2:
* Add support to update RSS table before device_start.
* Simplify the codes with rte_bswap32.
* Polish the commit log.
---
drivers/net/i40e/i40e_ethdev.c | 21 ++++++++++++++-------
drivers/net/i40e/i40e_ethdev.h | 3 +++
2 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 552a7a5..65fd717 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2444,6 +2444,8 @@ i40e_dev_stop(struct rte_eth_dev *dev)
pf->tm_conf.committed = false;
hw->adapter_stopped = 1;
+
+ pf->adapter->rss_reta_updated = 0;
}
static void
@@ -4255,6 +4257,8 @@ i40e_dev_rss_reta_update(struct rte_eth_dev *dev,
}
ret = i40e_set_rss_lut(pf->main_vsi, lut, reta_size);
+ pf->adapter->rss_reta_updated = 1;
+
out:
rte_free(lut);
@@ -8492,13 +8496,16 @@ i40e_pf_config_rss(struct i40e_pf *pf)
return -ENOTSUP;
}
- for (i = 0, j = 0; i < hw->func_caps.rss_table_size; i++, j++) {
- if (j == num)
- j = 0;
- lut = (lut << 8) | (j & ((0x1 <<
- hw->func_caps.rss_table_entry_width) - 1));
- if ((i & 3) == 3)
- I40E_WRITE_REG(hw, I40E_PFQF_HLUT(i >> 2), lut);
+ if (pf->adapter->rss_reta_updated == 0) {
+ for (i = 0, j = 0; i < hw->func_caps.rss_table_size; i++, j++) {
+ if (j == num)
+ j = 0;
+ lut = (lut << 8) | (j & ((0x1 <<
+ hw->func_caps.rss_table_entry_width) - 1));
+ if ((i & 3) == 3)
+ I40E_WRITE_REG(hw, I40E_PFQF_HLUT(i >> 2),
+ rte_bswap32(lut));
+ }
}
rss_conf = pf->dev_data->dev_conf.rx_adv_conf.rss_conf;
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 11ecfc3..930eb9a 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -1081,6 +1081,9 @@ struct i40e_adapter {
/* For devargs */
uint8_t use_latest_vec;
+
+ /* For RSS reta table update */
+ uint8_t rss_reta_updated;
};
/**
--
2.7.4
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