Defined in 1 files as a struct:

• bsd/sys/protosw.h, line 135 (as a struct)

Referenced in 3 files:

• bsd/netinet/ip_icmp.c, line 619
• bsd/netinet/tcp_subr.c, line 2425
• bsd/netinet/udp_usrreq.c, line 921