| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | This module sets the Type of Service field in the IPv4 header (including the |
| 2 | 'precedence' bits) or the Priority field in the IPv6 header. Note that TOS |
| 3 | shares the same bits as DSCP and ECN. The TOS target is only valid in the |
| 4 | \fBmangle\fR table. |
| 5 | .TP |
| 6 | \fB\-\-set\-tos\fP \fIvalue\fP[\fB/\fP\fImask\fP] |
| 7 | Zeroes out the bits given by \fImask\fR and XORs \fIvalue\fR into the |
| 8 | TOS/Priority field. If \fImask\fR is omitted, 0xFF is assumed. |
| 9 | .TP |
| 10 | \fB\-\-set\-tos\fP \fIsymbol\fP |
| 11 | You can specify a symbolic name when using the TOS target for IPv4. It implies |
| 12 | a mask of 0xFF. The list of recognized TOS names can be obtained by calling |
| 13 | iptables with \fB\-j TOS \-h\fP. |
| 14 | .PP |
| 15 | The following mnemonics are available: |
| 16 | .TP |
| 17 | \fB\-\-and\-tos\fP \fIbits\fP |
| 18 | Binary AND the TOS value with \fIbits\fR. (Mnemonic for \fB\-\-set\-tos |
| 19 | 0/\fR\fIinvbits\fR, where \fIinvbits\fR is the binary negation of \fIbits\fR.) |
| 20 | .TP |
| 21 | \fB\-\-or\-tos\fP \fIbits\fP |
| 22 | Binary OR the TOS value with \fIbits\fR. (Mnemonic for \fB\-\-set\-tos\fP |
| 23 | \fIbits\fR\fB/\fR\fIbits\fR.) |
| 24 | .TP |
| 25 | \fB\-\-xor\-tos\fP \fIbits\fP |
| 26 | Binary XOR the TOS value with \fIbits\fR. (Mnemonic for \fB\-\-set\-tos\fP |
| 27 | \fIbits\fR\fB/0\fR.) |