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cxgbe: Add a struct sge_ofld_txq type.

Authored by jhb on Mar 22 2021, 10:44 PM.
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This type mirrors struct sge_ofld_rxq and holds state for TCP offload
transmit queues. Currently it only holds a work queue but will
include additional state in future changes.

Sponsored by: Chelsio Communications

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rS FreeBSD src repository - subversion
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Buildable 37997
Build 34886: arc lint + arc unit

Event Timeline

jhb requested review of this revision.Mar 22 2021, 10:44 PM
  • Add alloc/free_ofld_txq() routines.

The offload tx queues are also used for RATELIMIT tx and we should either set cxgbe_rate_tag->eo_txq to ofld_txq->wrq in ethofld_transmit or change eo_txq to be a sge_ofld_txq.

np requested changes to this revision.Mar 25 2021, 5:17 AM

There's also this in t4_main.c that needs to be updated to sizeof(struct sge_ofld_txq):

s->ofld_txq = malloc(s->nofldtxq * sizeof(struct sge_wrq),  M_CXGBE, M_ZERO | M_WAITOK);
This revision now requires changes to proceed.Mar 25 2021, 5:17 AM
  • Fix with RATELIMIT and malloc size.

Using 'sizeof(*s->ofld_txq)' here instead of the type would perhaps have been more future proof.


I changed the type of cst->eo_txq so that this line would still work (and it also seemed more natural for eo_txq to point to the actual txq rather than just the embedded wrq).

This revision is now accepted and ready to land.Mar 25 2021, 10:37 PM

Let's land this if it's ready.

This revision was automatically updated to reflect the committed changes.