Helper function bpf_get_numa_node_id
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Return the id of the current NUMA node. The primary use case for this helper is the selection of sockets for the local NUMA node, when the program is attached to sockets using the SO_ATTACH_REUSEPORT_EBPF option (see also socket(7)), but the helper is also available to other eBPF program types, similarly to bpf_get_smp_processor_id().
Returns
The id of current NUMA node.
static long (* const bpf_get_numa_node_id)(void) = (void *) 42;
Usage
Docs could be improved
This part of the docs is incomplete, contributions are very welcome
Program types
This helper call can be used in the following program types:
BPF_PROG_TYPE_CGROUP_DEVICEBPF_PROG_TYPE_CGROUP_SKBBPF_PROG_TYPE_CGROUP_SOCKBPF_PROG_TYPE_CGROUP_SOCKOPTBPF_PROG_TYPE_CGROUP_SOCK_ADDRBPF_PROG_TYPE_CGROUP_SYSCTLBPF_PROG_TYPE_FLOW_DISSECTORBPF_PROG_TYPE_KPROBEBPF_PROG_TYPE_LSMBPF_PROG_TYPE_LWT_INBPF_PROG_TYPE_LWT_OUTBPF_PROG_TYPE_LWT_SEG6LOCALBPF_PROG_TYPE_LWT_XMITBPF_PROG_TYPE_NETFILTERBPF_PROG_TYPE_PERF_EVENTBPF_PROG_TYPE_RAW_TRACEPOINTBPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLEBPF_PROG_TYPE_SCHED_ACTBPF_PROG_TYPE_SCHED_CLSBPF_PROG_TYPE_SK_LOOKUPBPF_PROG_TYPE_SK_MSGBPF_PROG_TYPE_SK_REUSEPORTBPF_PROG_TYPE_SK_SKBBPF_PROG_TYPE_SOCKET_FILTERBPF_PROG_TYPE_SOCK_OPSBPF_PROG_TYPE_STRUCT_OPSBPF_PROG_TYPE_SYSCALLBPF_PROG_TYPE_TRACEPOINTBPF_PROG_TYPE_TRACINGBPF_PROG_TYPE_XDP
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome