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https://unix.stackexchange.com/questions/72519/how-do-i-check-if-i-have-packet-socket-support-enabled-in-my-distros-kernel
How do I check that packet socket support has been compiled into my kernel? I'm running Crunchbang, a Debian-based distribution. ... How do I check if I have packet socket support enabled in my distro's kernel? Ask Question Asked 6 years, ... check-config errors on Linux 3.19.0 kernel, configured under Ubuntu 15.04 x86-64. 1.
https://www.linuxquestions.org/questions/linux-newbie-8/enable-packet-socket-4175550745/
Aug 20, 2015 · Hi I am trying run wireshark and in one of the document it says that "packet socket" has to be enabled. How do I go about listing if this is enabled in the kernel How do I enable this if this is not Thanks and Regards
https://github.com/Microsoft/WSL/issues/1628
Jan 21, 2017 · A brief description Trying to start isc-dhpc-server results in messages about unsupported Packet socket and Socket Filtering Expected results Everything working fine and dhcp-server giving ips to clients Actual results (with terminal out...
https://googleprojectzero.blogspot.com/2017/05/exploiting-linux-kernel-via-packet.html
To create an AF_PACKET socket a process must have the CAP_NET_RAW capability in the user namespace that governs its network namespace. More details can be found in the packet sockets documentation. It should be noted that if a kernel has unprivileged user namespaces enabled, then an unprivileged user is able to create packet sockets.
http://manpages.ubuntu.com/manpages/artful/man7/tcp.7.html
tcp_autocorking (Boolean; default: enabled; since Linux 3.14) If this option is enabled, the kernel tries to coalesce small writes (from consecutive write(2) and sendmsg(2) calls) as much as possible, in order to decrease the total number of sent packets. Coalescing is done if at least one prior packet for the flow is waiting in Qdisc queues or ...
http://manpages.ubuntu.com/manpages/disco/en/man7/packet.7.html
All incoming packets of that protocol type will be passed to the packet socket before they are passed to the protocols implemented in the kernel. In order to create a packet socket, a process must have the CAP_NET_RAW capability in the user namespace that governs its network namespace.
https://help.ubuntu.com/lts/serverguide/DPDK.html
That said if you have multiple nodes, but all network cards on one, you should consider spreading your cards. If not at least allocate your memory to the node where the cards reside, for example in a two node all to node #2: -m 0, 2048. You can use the tool lstopo from the package hwloc-nox to see on which socket your cards are located.
https://stackoverflow.com/questions/1814485/sending-udp-packet-in-linux-kernel
Run your code when you're in a text mode console (i.e. press Ctrl+Alt+F1 to go to the text console). This way a kernel panic will print out the stack trace and any extra information about what went wrong. If that doesn't help you, update your question with the stack trace.
https://news.ycombinator.com/item?id=14309755
May 10, 2017 · "Packet sockets" is shorthand for the AF_PACKET type sockets in Linux that let you construct network packets from the ground up, including the ethernet header, if you so wish. That's as opposed to a regular socket, which is higher level and restricts you to a much smaller subset of things you can change/set.
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