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net/i40e: fix Rx hang when disable LLDP

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Remove stopping LLDP as a workaround for a known
errata which can cause Rx hang.

Ref: Item #70 from
http://www.intel.com/content/www/us/en/embedded/products/networking/xl710-10-40-controller-spec-update.html

Fixes: 4861cde461 ("i40e: new poll mode driver")

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
This commit is contained in:
Qi Zhang 2016-10-20 04:40:13 +08:00 committed by Bruce Richardson
parent f3f9b17bb8
commit fcbd40d432
1 changed files with 0 additions and 9 deletions
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9
drivers/net/i40e/i40e_ethdev.c
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@ -1223,11 +1223,6 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
dev->rx_pkt_burst = NULL;
dev->tx_pkt_burst = NULL;
/* Disable LLDP */
ret = i40e_aq_stop_lldp(hw, true, NULL);
if (ret != I40E_SUCCESS) /* Its failure can be ignored */
PMD_INIT_LOG(INFO, "Failed to stop lldp");
/* Clear PXE mode */
i40e_clear_pxe_mode(hw);
@ -9432,10 +9427,6 @@ i40e_dcb_init_configure(struct rte_eth_dev *dev, bool sw_dcb)
* LLDP MIB change event.
*/
if (sw_dcb == TRUE) {
ret = i40e_aq_stop_lldp(hw, TRUE, NULL);
if (ret != I40E_SUCCESS)
PMD_INIT_LOG(DEBUG, "Failed to stop lldp");
ret = i40e_init_dcb(hw);
/* if sw_dcb, lldp agent is stopped, the return from
* i40e_init_dcb we expect is failure with I40E_AQ_RC_EPERM