Defined in 2 files as a macro:

• include/net/tcp.h, line 183 (as a macro)
• tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c, line 29 (as a macro)

Referenced in 9 files:

• net/ipv4/tcp.c, line 3266
• net/ipv4/tcp_input.c
  • line 4014
  • line 4067
• net/ipv4/tcp_output.c, line 622
• net/netfilter/nf_synproxy_core.c
  • line 62
  • line 121
• net/netfilter/nft_exthdr.c, line 273
• net/netfilter/xt_TCPMSS.c
  • line 118
  • line 181
• net/netfilter/xt_tcpmss.c, line 54
• net/sched/sch_cake.c, line 1135
• tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c, line 465