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| Filename | Latest commit message | Latest commit date |
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88c991a917
The Cavium thunder nicvf driver supports rx/tx rings of up to 65536 entries per. The number of entires are stored in the q_len member of struct q_desc_mem. The problem is that q_len being a u16, results in 65536 becoming 0. In getting pointers to descriptors in the rings, the driver uses q_len minus 1 as a mask after incrementing the pointer, in order to go back to the beginning and not go past the end of the ring. With the q_len set to 0 the mask is no longer correct and the driver does go beyond the end of the ring, causing various ills. Usually the first thing that shows up is a "NETDEV WATCHDOG: enP2p1s0f1 (nicvf): transmit queue 7 timed out" warning. This patch remedies the problem by changing q_len to a u32. Signed-off-by: Dean Nelson <dnelson@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.