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Code Issues Releases Activity

ixl(4): Fix two important RSS bugs.

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- Change tc_mapping field to assign 64 queues instead of 16 to the PF's VSI;
  add comments to describe how this is done.

- Set hash lut size to 512 when setting filter control; the lut size defaults
  to 128 if this isn't set.

Differential Revision:	https://reviews.freebsd.org/D5203
Reviewed by:	gallatin
Tested by:	jeffrey.e.pieper@intel.com
Sponsored by:	Intel Corporation
This commit is contained in:
Eric Joyner 2016-02-19 21:58:14 +00:00
parent dcd95d8a01
commit c11f1016ec
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=295826
1 changed files with 12 additions and 2 deletions
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12
sys/dev/ixl/if_ixl.c
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@ -1175,6 +1175,7 @@ ixl_init_locked(struct ixl_pf *pf)
#ifdef IXL_FDIR
filter.enable_fdir = TRUE;
#endif
filter.hash_lut_size = I40E_HASH_LUT_SIZE_512;
if (i40e_set_filter_control(hw, &filter))
device_printf(dev, "set_filter_control() failed\n");
@ -2758,8 +2759,17 @@ ixl_initialize_vsi(struct ixl_vsi *vsi)
*/
ctxt.info.valid_sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
ctxt.info.mapping_flags |= I40E_AQ_VSI_QUE_MAP_CONTIG;
/* In contig mode, que_mapping[0] is first queue index used by this VSI */
ctxt.info.queue_mapping[0] = 0;
ctxt.info.tc_mapping[0] = 0x0800;
/*
* This VSI will only use traffic class 0; start traffic class 0's
* queue allocation at queue 0, and assign it 64 (2^6) queues (though
* the driver may not use all of them).
*/
ctxt.info.tc_mapping[0] = ((0 << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT)
& I40E_AQ_VSI_TC_QUE_OFFSET_MASK) |
((6 << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT)
& I40E_AQ_VSI_TC_QUE_NUMBER_MASK);
/* Set VLAN receive stripping mode */
ctxt.info.valid_sections |= I40E_AQ_VSI_PROP_VLAN_VALID;