kubernetes/vendor/github.com/ishidawataru/sctp/ipsock_linux.go

//from https://github.com/golang/go
// Boolean to int.
func boolint(b bool) int { … }

//from https://github.com/golang/go
func ipToSockaddr(family int, ip net.IP, port int, zone string) (syscall.Sockaddr, error) { … }

//from https://github.com/golang/go
func sockaddr(a *net.TCPAddr, family int) (syscall.Sockaddr, error) { … }

type ipStackCapabilities …

var ipStackCaps …

//from https://github.com/golang/go
// supportsIPv4 reports whether the platform supports IPv4 networking
// functionality.
func supportsIPv4() bool { … }

//from https://github.com/golang/go
// supportsIPv6 reports whether the platform supports IPv6 networking
// functionality.
func supportsIPv6() bool { … }

//from https://github.com/golang/go
// supportsIPv4map reports whether the platform supports mapping an
// IPv4 address inside an IPv6 address at transport layer
// protocols. See RFC 4291, RFC 4038 and RFC 3493.
func supportsIPv4map() bool { … }

//from https://github.com/golang/go
// Probe probes IPv4, IPv6 and IPv4-mapped IPv6 communication
// capabilities which are controlled by the IPV6_V6ONLY socket option
// and kernel configuration.
//
// Should we try to use the IPv4 socket interface if we're only
// dealing with IPv4 sockets? As long as the host system understands
// IPv4-mapped IPv6, it's okay to pass IPv4-mapeed IPv6 addresses to
// the IPv6 interface. That simplifies our code and is most
// general. Unfortunately, we need to run on kernels built without
// IPv6 support too. So probe the kernel to figure it out.
func (p *ipStackCapabilities) probe() { … }

//from https://github.com/golang/go
//Change: we check the first IP address in the list of candidate SCTP IP addresses
func (a *SCTPAddr) isWildcard() bool { … }

func (a *SCTPAddr) family() int { … }

//from https://github.com/golang/go
func favoriteAddrFamily(network string, laddr *SCTPAddr, raddr *SCTPAddr, mode string) (family int, ipv6only bool) { … }

//from https://github.com/golang/go
//Changes: it is for SCTP only
func setDefaultSockopts(s int, family int, ipv6only bool) error { … }