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Eric Dumazet 88078d98d1 net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends
After working on IP defragmentation lately, I found that some large
packets defeat CHECKSUM_COMPLETE optimization because of NIC adding
zero paddings on the last (small) fragment.

While removing the padding with pskb_trim_rcsum(), we set skb->ip_summed
to CHECKSUM_NONE, forcing a full csum validation, even if all prior
fragments had CHECKSUM_COMPLETE set.

We can instead compute the checksum of the part we are trimming,
usually smaller than the part we keep.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 13:44:11 -04:00
arch xen: fixes for 4.17-rc1 2018-04-12 11:04:35 -07:00
block
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Documentation soc: ti: K2G: enhancement to support QMSS in K2G NAVSS 2018-04-18 21:00:56 -04:00
drivers net-next/hinic: add arm64 support 2018-04-19 13:34:44 -04:00
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include net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends 2018-04-19 13:44:11 -04:00
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kernel xdp: transition into using xdp_frame for return API 2018-04-17 10:50:29 -04:00
lib Fix for one swiotlb regression in 2.16 from Takashi. 2018-04-12 11:00:48 -07:00
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net net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends 2018-04-19 13:44:11 -04:00
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tools selftest: tc_flower: add testcase for 'ip_flags' 2018-04-17 13:41:54 -04:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.