SAF_XMITCRC32
if (flags & SAF_XMITCRC32) {
if (!(flags & SAF_XMITCRC32))
if (flags & SAF_XMITCRC32) {
state->sa_flags &= ~SAF_XMITCRC32 & ~SAF_XMITCRCNONE;
state->sa_flags |= SAF_XMITCRC32;