forked from luck/tmp_suning_uos_patched
789141b215
The value of the session's .mtu field, as defined by pppol2tp_connect() or pppol2tp_session_create(), is later overwritten by pppol2tp_session_init() (unless getting the tunnel's socket PMTU fails). This field is then only used when setting the PPP channel's MTU in pppol2tp_connect(). Furthermore, the SIOC[GS]IFMTU ioctls only act on the session's .mtu without propagating this value to the PPP channel, making them useless. This patch initialises the PPP channel's MTU directly and ignores the session's .mtu entirely. MTU is still computed by subtracting the PPPOL2TP_HEADER_OVERHEAD constant. It is not optimal, but that doesn't really matter: po->chan.mtu is only used when the channel is part of a multilink PPP bundle. Running multilink PPP over packet switched networks is certainly not going to be efficient, so not picking the best MTU does not harm (in the worst case, packets will just be fragmented by the underlay). The SIOC[GS]IFMTU ioctls are removed entirely (as opposed to simply ignored), because these ioctls commands are part of the requests that should be handled generically by the socket layer. PX_PROTO_OL2TP was the only socket type abusing these ioctls. Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
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.