1. Oracle Solaris 11.4 DTrace (Dynamic Tracing) Guide
  2. DTrace Providers
  3. Network and Network Service Protocol Providers
  4. tcp Provider
  5. Argument Types for the tcp Provider
  6. tcplsinfo_t Structure

tcplsinfo_t Structure

The tcplsinfo_t structure contains the previous tcp state during a state change. 

typedef struct tcplsinfo {
        int32_t tcps_state;              /* TCP state */
} tcplsinfo_t;

The tcps_state member of tcplsinfo_t contains the previous TCP state. Inline definitions are provided for the various TCP states: TCP_STATE_CLOSED, TCP_STATE_SYN_SENT, and so on. Use inline tcp_state_string[] to convert state to a string.