59 lines
1.1 KiB
Go
59 lines
1.1 KiB
Go
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package sctp
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const (
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paddingMultiple = 4
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)
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func getPadding(len int) int {
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return (paddingMultiple - (len % paddingMultiple)) % paddingMultiple
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}
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func padByte(in []byte, cnt int) []byte {
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if cnt < 0 {
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cnt = 0
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}
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padding := make([]byte, cnt)
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return append(in, padding...)
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}
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// Serial Number Arithmetic (RFC 1982)
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func sna32LT(i1, i2 uint32) bool {
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return (i1 < i2 && i2-i1 < 1<<31) || (i1 > i2 && i1-i2 > 1<<31)
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}
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func sna32LTE(i1, i2 uint32) bool {
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return i1 == i2 || sna32LT(i1, i2)
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}
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func sna32GT(i1, i2 uint32) bool {
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return (i1 < i2 && (i2-i1) >= 1<<31) || (i1 > i2 && (i1-i2) <= 1<<31)
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}
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func sna32GTE(i1, i2 uint32) bool {
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return i1 == i2 || sna32GT(i1, i2)
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}
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func sna32EQ(i1, i2 uint32) bool {
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return i1 == i2
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}
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func sna16LT(i1, i2 uint16) bool {
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return (i1 < i2 && (i2-i1) < 1<<15) || (i1 > i2 && (i1-i2) > 1<<15)
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}
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func sna16LTE(i1, i2 uint16) bool {
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return i1 == i2 || sna16LT(i1, i2)
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}
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func sna16GT(i1, i2 uint16) bool {
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return (i1 < i2 && (i2-i1) >= 1<<15) || (i1 > i2 && (i1-i2) <= 1<<15)
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}
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func sna16GTE(i1, i2 uint16) bool {
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return i1 == i2 || sna16GT(i1, i2)
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}
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func sna16EQ(i1, i2 uint16) bool {
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return i1 == i2
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}
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