Defined in 2 files as a member:

• include/linux/tcp.h, line 246 (as a member)
• tools/testing/selftests/bpf/bpf_tcp_helpers.h, line 69 (as a member)

Referenced in 2 files:

• net/ipv4/tcp_input.c, line 5987
• net/ipv4/tcp_output.c, line 820