feat: Add tcp_info to Linux uClibc bindings

(backport <#4347>)
(cherry picked from commit c023ed5)

Author: b-parikh

src/unix/linux_like/linux/uclibc/mod.rs

@@ -114,6 +114,42 @@ s! {
     pub struct pthread_condattr_t {
         size: [u8; crate::__SIZEOF_PTHREAD_CONDATTR_T],
     }
+
+    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,
+        /// This contains the bitfields `tcpi_snd_wscale` and `tcpi_rcv_wscale`.
+        /// Each is 4 bits.
+        pub tcpi_snd_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_total_retrans: u32,
+    }
 }
 
 impl siginfo_t {