1This module sets the netfilter mark value associated with a connection. The 2mark is 32 bits wide. 3.TP 4\fB\-\-set\-xmark\fP \fIvalue\fP[\fB/\fP\fImask\fP] 5Zero out the bits given by \fImask\fP and XOR \fIvalue\fP into the ctmark. 6.TP 7\fB\-\-save\-mark\fP [\fB\-\-nfmask\fP \fInfmask\fP] [\fB\-\-ctmask\fP \fIctmask\fP] 8Copy the packet mark (nfmark) to the connection mark (ctmark) using the given 9masks. The new nfmark value is determined as follows: 10.IP 11ctmark = (ctmark & ~ctmask) ^ (nfmark & nfmask) 12.IP 13i.e. \fIctmask\fP defines what bits to clear and \fInfmask\fP what bits of the 14nfmark to XOR into the ctmark. \fIctmask\fP and \fInfmask\fP default to 150xFFFFFFFF. 16.TP 17\fB\-\-restore\-mark\fP [\fB\-\-nfmask\fP \fInfmask\fP] [\fB\-\-ctmask\fP \fIctmask\fP] 18Copy the connection mark (ctmark) to the packet mark (nfmark) using the given 19masks. The new ctmark value is determined as follows: 20.IP 21nfmark = (nfmark & ~\fInfmask\fP) ^ (ctmark & \fIctmask\fP); 22.IP 23i.e. \fInfmask\fP defines what bits to clear and \fIctmask\fP what bits of the 24ctmark to XOR into the nfmark. \fIctmask\fP and \fInfmask\fP default to 250xFFFFFFFF. 26.IP 27\fB\-\-restore\-mark\fP is only valid in the \fBmangle\fP table. 28.PP 29The following mnemonics are available for \fB\-\-set\-xmark\fP: 30.TP 31\fB\-\-and\-mark\fP \fIbits\fP 32Binary AND the ctmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark 330/\fP\fIinvbits\fP, where \fIinvbits\fP is the binary negation of \fIbits\fP.) 34.TP 35\fB\-\-or\-mark\fP \fIbits\fP 36Binary OR the ctmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark\fP 37\fIbits\fP\fB/\fP\fIbits\fP.) 38.TP 39\fB\-\-xor\-mark\fP \fIbits\fP 40Binary XOR the ctmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark\fP 41\fIbits\fP\fB/0\fP.) 42.TP 43\fB\-\-set\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP] 44Set the connection mark. If a mask is specified then only those bits set in the 45mask are modified. 46.TP 47\fB\-\-save\-mark\fP [\fB\-\-mask\fP \fImask\fP] 48Copy the nfmark to the ctmark. If a mask is specified, only those bits are 49copied. 50.TP 51\fB\-\-restore\-mark\fP [\fB\-\-mask\fP \fImask\fP] 52Copy the ctmark to the nfmark. If a mask is specified, only those bits are 53copied. This is only valid in the \fBmangle\fP table. 54