diff --git a/libc-test/semver/openbsd.txt b/libc-test/semver/openbsd.txt
index 5b0064f72e65..529d9f82472c 100644
--- a/libc-test/semver/openbsd.txt
+++ b/libc-test/semver/openbsd.txt
@@ -808,6 +808,7 @@ ST_RDONLY
 S_IEXEC
 S_IREAD
 S_IWRITE
+TCP_INFO
 TCP_MAXSEG
 TCP_MD5SIG
 TCP_NOPUSH
@@ -1014,6 +1015,7 @@ backtrace
 backtrace_symbols
 backtrace_symbols_fd
 backtrace_symbols_fmt
+basename
 bsearch
 caddr_t
 calloc_conceal
@@ -1027,6 +1029,7 @@ cmsghdr
 daemon
 difftime
 dirfd
+dirname
 dl_iterate_phdr
 dl_phdr_info
 drand48
@@ -1254,6 +1257,7 @@ strtonum
 sync
 syscall
 sysctl
+tcp_info
 telldir
 tmpfs_args
 truncate
@@ -1269,5 +1273,3 @@ utmp
 utrace
 wait4
 xucred
-dirname
-basename
diff --git a/src/unix/bsd/netbsdlike/mod.rs b/src/unix/bsd/netbsdlike/mod.rs
index 07dc39be54e3..07cdec800658 100644
--- a/src/unix/bsd/netbsdlike/mod.rs
+++ b/src/unix/bsd/netbsdlike/mod.rs
@@ -650,6 +650,8 @@ pub const TIMER_ABSTIME: ::c_int = 1;
 
 pub const RB_AUTOBOOT: ::c_int = 0;
 
+pub const TCP_INFO: ::c_int = 9;
+
 #[link(name = "util")]
 extern "C" {
     pub fn setgrent();
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 43b17e1a7ecf..63957d17834f 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -1549,7 +1549,6 @@ pub const TCP_KEEPIDLE: ::c_int = 3;
 pub const TCP_KEEPINTVL: ::c_int = 5;
 pub const TCP_KEEPCNT: ::c_int = 6;
 pub const TCP_KEEPINIT: ::c_int = 7;
-pub const TCP_INFO: ::c_int = 9;
 pub const TCP_MD5SIG: ::c_int = 0x10;
 pub const TCP_CONGCTL: ::c_int = 0x20;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/mod.rs b/src/unix/bsd/netbsdlike/openbsd/mod.rs
index 08c816566166..1b683a4eb98b 100644
--- a/src/unix/bsd/netbsdlike/openbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/mod.rs
@@ -541,6 +541,68 @@ s! {
         #[cfg(not(libc_union))]
         pub ifr_ifru: ::sockaddr,
     }
+
+    pub struct tcp_info {
+        pub tcpi_state: u8,
+        pub __tcpi_ca_state: u8,
+        pub __tcpi_retransmits: u8,
+        pub __tcpi_probes: u8,
+        pub __tcpi_backoff: u8,
+        pub tcpi_options: u8,
+        pub tcpi_snd_wscale: u8,
+        pub tcpi_rcv_wscale: u8,
+        pub tcpi_rto: u32,
+        pub __tcpi_ato: u32,
+        pub tcpi_snd_mss: u32,
+        pub tcpi_rcv_mss: u32,
+        pub __tcpi_unacked: u32,
+        pub __tcpi_sacked: u32,
+        pub __tcpi_lost: u32,
+        pub __tcpi_retrans: u32,
+        pub __tcpi_fackets: u32,
+        pub tcpi_last_data_sent: u32,
+        pub tcpi_last_ack_sent: u32,
+        pub tcpi_last_data_recv: u32,
+        pub tcpi_last_ack_recv: u32,
+        pub __tcpi_pmtu: u32,
+        pub __tcpi_rcv_ssthresh: u32,
+        pub tcpi_rtt: u32,
+        pub tcpi_rttvar: u32,
+        pub tcpi_snd_ssthresh: u32,
+        pub tcpi_snd_cwnd: u32,
+        pub __tcpi_advmss: u32,
+        pub __tcpi_reordering: u32,
+        pub __tcpi_rcv_rtt: u32,
+        pub tcpi_rcv_space: u32,
+        pub tcpi_snd_wnd: u32,
+        pub tcpi_snd_nxt: u32,
+        pub tcpi_rcv_nxt: u32,
+        pub tcpi_toe_tid: u32,
+        pub tcpi_snd_rexmitpack: u32,
+        pub tcpi_rcv_ooopack: u32,
+        pub tcpi_snd_zerowin: u32,
+        pub tcpi_rttmin: u32,
+        pub tcpi_max_sndwnd: u32,
+        pub tcpi_rcv_adv: u32,
+        pub tcpi_rcv_up: u32,
+        pub tcpi_snd_una: u32,
+        pub tcpi_snd_up: u32,
+        pub tcpi_snd_wl1: u32,
+        pub tcpi_snd_wl2: u32,
+        pub tcpi_snd_max: u32,
+        pub tcpi_ts_recent: u32,
+        pub tcpi_ts_recent_age: u32,
+        pub tcpi_rfbuf_cnt: u32,
+        pub tcpi_rfbuf_ts: u32,
+        pub tcpi_so_rcv_sb_cc: u32,
+        pub tcpi_so_rcv_sb_hiwat: u32,
+        pub tcpi_so_rcv_sb_lowat: u32,
+        pub tcpi_so_rcv_sb_wat: u32,
+        pub tcpi_so_snd_sb_cc: u32,
+        pub tcpi_so_snd_sb_hiwat: u32,
+        pub tcpi_so_snd_sb_lowat: u32,
+        pub tcpi_so_snd_sb_wat: u32,
+    }
 }
 
 impl siginfo_t {