1 This module sets the netfilter mark value associated with a connection. The
4 \fB\-\-set\-xmark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
5 Zero out the bits given by \fImask\fR and XOR \fIvalue\fR into the ctmark.
7 \fB\-\-save\-mark\fP [\fB\-\-nfmask\fP \fInfmask\fP] [\fB\-\-ctmask\fP \fIctmask\fP]
8 Copy the packet mark (nfmark) to the connection mark (ctmark) using the given
9 masks. The new nfmark value is determined as follows:
11 ctmark = (ctmark & ~ctmask) ^ (nfmark & nfmask)
13 i.e. \fIctmask\fR defines what bits to clear and \fInfmask\fR what bits of the
14 nfmark to XOR into the ctmark. \fIctmask\fR and \fInfmask\fR default to
17 \fB\-\-restore\-mark\fP [\fB\-\-nfmask\fP \fInfmask\fP] [\fB\-\-ctmask\fP \fIctmask\fP]
18 Copy the connection mark (ctmark) to the packet mark (nfmark) using the given
19 masks. The new ctmark value is determined as follows:
21 nfmark = (nfmark & ~\fInfmask\fR) ^ (ctmark & \fIctmask\fR);
23 i.e. \fInfmask\fR defines what bits to clear and \fIctmask\fR what bits of the
24 ctmark to XOR into the nfmark. \fIctmask\fR and \fInfmask\fR default to
27 \fB\-\-restore\-mark\fP is only valid in the \fBmangle\fP table.
29 The following mnemonics are available for \fB\-\-set\-xmark\fP:
31 \fB\-\-and\-mark\fP \fIbits\fP
32 Binary AND the ctmark with \fIbits\fR. (Mnemonic for \fB\-\-set\-xmark
33 0/\fR\fIinvbits\fR, where \fIinvbits\fR is the binary negation of \fIbits\fR.)
35 \fB\-\-or\-mark\fP \fIbits\fP
36 Binary OR the ctmark with \fIbits\fR. (Mnemonic for \fB\-\-set\-xmark\fP
37 \fIbits\fR\fB/\fR\fIbits\fR.)
39 \fB\-\-xor\-mark\fP \fIbits\fP
40 Binary XOR the ctmark with \fIbits\fR. (Mnemonic for \fB\-\-set\-xmark\fP
43 \fB\-\-set\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
44 Set the connection mark. If a mask is specified then only those bits set in the
47 \fB\-\-save\-mark\fP [\fB\-\-mask\fP \fImask\fP]
48 Copy the nfmark to the ctmark. If a mask is specified, only those bits are
51 \fB\-\-restore\-mark\fP [\fB\-\-mask\fP \fImask\fP]
52 Copy the ctmark to the nfmark. If a mask is specified, only those bits are
53 copied. This is only valid in the \fBmangle\fR table.