Documentation/networking/ip-sysctl.rst

245 	See also tcp_max_syn_backlog for additional tuning for TCP sockets.
284 	when they know how/when to uncork their sockets.
392 	If set, incoming connections to listening sockets that do not have a
396 	listening socket's mark is unchanged. Listening sockets that already
439 	Enables child sockets to inherit the L3 master device index.
441 	across L3 master domains (e.g., VRFs) with connected sockets
452 	Maximal number of TCP sockets not attached to any user file handle,
478 	Maximal number of timewait sockets held by system simultaneously.
494 	max: number of pages allowed for queueing by all TCP sockets.
555 	you should think about lowering this value, such sockets
625 	min: Minimal size of receive buffer used by TCP sockets.
631 	default: initial size of receive buffer used by TCP sockets.
748 	Initial time period in second to disable Fastopen on active TCP sockets
831 	Enable reuse of TIME-WAIT sockets for new connections when it is
847 	min: Amount of memory reserved for send buffers for TCP sockets.
852 	default: initial size of send buffer used by TCP sockets.  This
860 	send buffers for TCP sockets. This value does not override
875 	sockets not using TCP_NOTSENT_LOWAT. For these sockets, a change
921 	on systems with a lot of TCP sockets, since it increases
939 	Number of pages allowed for queueing by all UDP sockets.
947 	max: Number of pages allowed for queueing by all UDP sockets.
952 	Minimal size of receive buffer used by UDP sockets in moderation.
954 	total pages of UDP sockets exceed udp_mem pressure. The unit is byte.
959 	Minimal size of send buffer used by UDP sockets in moderation.
961 	total pages of UDP sockets exceed udp_mem pressure. The unit is byte.
1077 	the new socket and all sockets bound to the port have SO_REUSEADDR.
1094 	certain kinds of local sockets.  Currently we only do this
1095 	for established TCP and connected UDP sockets.
1103 	Restrict ICMP_PROTO datagram sockets to users in the group range.
1105 	create ping sockets.  Setting it to "100 100" would grant permissions
1110 	Enable early demux for established TCP sockets.
1115 	Enable early demux for connected UDP sockets. Disable this if
2610 	Number of pages allowed for queueing by all SCTP sockets.
2618 	max: Number of pages allowed for queueing by all SCTP sockets.