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D. Wythe ce7ca79471 net/smc: fix fallback failed while sendmsg with fastopen
Before determining whether the msg has unsupported options, it has been
prematurely terminated by the wrong status check.

For the application, the general usages of MSG_FASTOPEN likes

fd = socket(...)
/* rather than connect */
sendto(fd, data, len, MSG_FASTOPEN)

Hence, We need to check the flag before state check, because the sock
state here is always SMC_INIT when applications tries MSG_FASTOPEN.
Once we found unsupported options, fallback it to TCP.

Fixes: ee9dfbef02 ("net/smc: handle sockopts forcing fallback")
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>

v2 -> v1: Optimize code style
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2023-03-08 13:00:55 +00:00
arch bpf-for-netdev 2023-03-06 20:28:00 -08:00
block
certs
crypto
Documentation ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause 2023-03-07 13:44:30 -08:00
drivers net: usb: qmi_wwan: add Telit 0x1080 composition 2023-03-07 15:27:29 +01:00
fs ARM: SoC drivers for 6.3 2023-02-27 10:04:49 -08:00
include ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause 2023-03-07 13:44:30 -08:00
init
io_uring
ipc
kernel bpf-for-netdev 2023-03-06 20:28:00 -08:00
lib
LICENSES
mm memblock: small optimizations 2023-02-27 09:34:53 -08:00
net net/smc: fix fallback failed while sendmsg with fastopen 2023-03-08 13:00:55 +00:00
rust
samples
scripts
security
sound ARM: SoC drivers for 6.3 2023-02-27 10:04:49 -08:00
tools ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause 2023-03-07 13:44:30 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
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.mailmap mailmap: update entries for Stephen Hemminger 2023-03-07 13:43:56 -08:00
.rustfmt.toml
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MAINTAINERS ARM: SoC fixes for 6.3, part 1 2023-02-27 10:09:40 -08:00
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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.

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.