8354e9c7e8
When the mlx5en(4) driver was converted to using BUSDMA(9) the call to m_defrag() was moved after the part of the TX routine that strips the header from the mbuf chain. Before it called m_defrag it first trimmed off the now-empty mbufs from the start of the chain. This has the side effect of also removing the head of the chain that has M_PKTHDR set. m_defrag() will not defrag a chain that does not have M_PKTHDR set, thus it was effectively never defragging the mbuf chains. As it turns out, trimming the mbufs in this fashion is unnecessary since the call to bus_dmamap_load_mbuf_sg doesn't map empty mbufs anyway, so remove it. Differential Revision: https://reviews.freebsd.org/D12050 Submitted by: mjoras@ MFC after: 1 week Sponsored by: Mellanox Technologies |
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| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README | ||
| README.md | ||
| UPDATING | ||
FreeBSD Source:
This is the top level of the FreeBSD source directory. This file
was last revised on:
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the Makefile in this directory for more information on the
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