cxgbe tom: Halve the size of offload transmit software descriptors
Needs ReviewPublic
Actions

Authored by jhb on Tue, Nov 26, 4:47 PM.

Details

Reviewers

Summary

Use bitfields to pack tx_credits and plen into a single 32-bit word.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 60788
Build 57672: arc lint + arc unit

Event Timeline

jhb created this revision.Tue, Nov 26, 4:47 PM

Herald added subscribers: ae, imp. · View Herald TranscriptTue, Nov 26, 4:47 PM

jhb requested review of this revision.Tue, Nov 26, 4:47 PM

Harbormaster completed remote builds in B60788: Diff 146980.Tue, Nov 26, 4:47 PM

jhb added a child revision: D47760: cxgbe tom: Make t4_push_frames static to t4_cpl_io.c.Tue, Nov 26, 4:48 PM

This isn't required for the other changes. Originally I was going to add another 1-bit field to struct ofld_tx_sdesc and had done this as a prep (I stole the extra bit from plen). However, I ended up not needing that change but still kept this as it does reduce memory usage a bit.