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In rdma_nl_rcv_skb(), the local variable err is assigned the return value of the supplied callback function, which could be one of ib_nl_handle_resolve_resp(), ib_nl_handle_set_timeout(), or ib_nl_handle_ip_res_resp(). These three functions all return skb->len on success. rdma_nl_rcv_skb() is merely a copy of netlink_rcv_skb(). The callback functions used by the latter have the convention: "Returns 0 on success or a negative error code". In particular, the statement (equal for both functions): if (nlh->nlmsg_flags & NLM_F_ACK || err) implies that rdma_nl_rcv_skb() always will ack a message, independent of the NLM_F_ACK being set in nlmsg_flags or not. The fix could be to change the above statement, but it is better to keep the two *_rcv_skb() functions equal in this respect and instead change the three callback functions in the rdma subsystem to the correct convention. Fixes: |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| 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.
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.