Defined in 3 files as a macro:

• include/net/tcp.h, line 233 (as a macro)
• tools/testing/selftests/bpf/progs/bpf_tracing_net.h, line 92 (as a macro)
• tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c, line 38 (as a macro)

Referenced in 6 files:

• net/ipv4/tcp_input.c, line 4634
• net/ipv4/tcp_output.c
  • line 681
  • line 749
• net/netfilter/nf_conntrack_proto_tcp.c, line 373
• net/netfilter/nf_synproxy_core.c
  • line 87
  • line 131
  • line 146
• tools/testing/selftests/bpf/progs/test_tcp_custom_syncookie.c
  • line 272
  • line 382
  • line 397
• tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
  • line 254
  • line 494