Change logic to check tx_avail < nsegs + reserved_space
Details
Details
- Reviewers
kmacy scottl hiren gnn - Group Reviewers
Intel Networking - Commits
- rS298224: Correct possible underflow conditions when checking for available space
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Diff Detail
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- rS FreeBSD src repository - subversion
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Just tagging you guys to see if this makes sense. I saw the em(4) driver underflow this calculation with dtrace and suspected that there is a small chance the other Intel drivers may do the same in extreme conditions considering that the code is basically the same.