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iproute2: tc cake qdisc add nat, docsis & ptm modes

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Add cake nat de-masquerading mode: nat, nonat.
Also docsis & ptm overhead related keywords: nat, nonat,
ptm, docsis-downstream-ip, docsis-downstream, docsis-upstream-ip
& docsis-upstream.

Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
v19.07.3_mercusys_ac12_duma
Kevin Darbyshire-Bryant 8 years ago committed by John Crispin
parent de8e032385
commit 4ef1144958
2 changed files with 57 additions and 13 deletions
Show Stats Download Patch File Download Diff File

2
package/network/utils/iproute2/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=iproute2
PKG_VERSION:=4.4.0
PKG_RELEASE:=3
PKG_RELEASE:=4
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=@KERNEL/linux/utils/net/iproute2

68
package/network/utils/iproute2/patches/950-add-cake-to-tc.patch
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@ -1,6 +1,6 @@
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -850,4 +850,56 @@ struct tc_pie_xstats {
@@ -850,4 +850,57 @@ struct tc_pie_xstats {
__u32 maxq; /* maximum queue size */
__u32 ecn_mark; /* packets marked with ecn*/
};
@ -17,6 +17,7 @@
+ TCA_CAKE_TARGET,
+ TCA_CAKE_AUTORATE,
+ TCA_CAKE_MEMORY,
+ TCA_CAKE_NAT,
+ __TCA_CAKE_MAX
+};
+#define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1)
@ -69,7 +70,7 @@
--- /dev/null
+++ b/tc/q_cake.c
@@ -0,0 +1,600 @@
@@ -0,0 +1,643 @@
+/*
+ * Common Applications Kept Enhanced -- CAKE
+ *
@ -126,8 +127,8 @@
+ fprintf(stderr, "Usage: ... cake [ bandwidth RATE | unlimited* | autorate_ingress ]\n"
+ " [ rtt TIME | datacentre | lan | metro | regional | internet* | oceanic | satellite | interplanetary ]\n"
+ " [ besteffort | precedence | diffserv8 | diffserv4* ]\n"
+ " [ flowblind | srchost | dsthost | hosts | flows* | dual-srchost | dual-dsthost | triple-isolate ]\n"
+ " [ atm | noatm* ] [ overhead N | conservative | raw* ]\n"
+ " [ flowblind | srchost | dsthost | hosts | flows* | dual-srchost | dual-dsthost | triple-isolate ] [ nat | nonat* ]\n"
+ " [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
+ " [ memlimit LIMIT ]\n"
+ " (* marks defaults)\n");
+}
@ -144,6 +145,7 @@
+ int overhead = 0;
+ bool overhead_set = false;
+ int flowmode = -1;
+ int nat = -1;
+ int atm = -1;
+ int autorate = -1;
+ struct rtattr *tail;
@ -228,6 +230,13 @@
+ } else if (strcmp(*argv, "triple-isolate") == 0) {
+ flowmode = 7;
+
+ } else if (strcmp(*argv, "nat") == 0) {
+ nat = 1;
+ } else if (strcmp(*argv, "nonat") == 0) {
+ nat = 0;
+
+ } else if (strcmp(*argv, "ptm") == 0) {
+ atm = 2;
+ } else if (strcmp(*argv, "atm") == 0) {
+ atm = 1;
+ } else if (strcmp(*argv, "noatm") == 0) {
@ -247,7 +256,29 @@
+ overhead = 48;
+ overhead_set = true;
+
+ /* Various ADSL framing schemes */
+ /*
+ * DOCSIS overhead figures courtesy of Greg White @ CableLabs.
+ * The "-ip" versions include the Ethernet frame header, in case
+ * you are shaping an IP interface instead of an Ethernet one.
+ */
+ } else if (strcmp(*argv, "docsis-downstream-ip") == 0) {
+ atm = 0;
+ overhead += 35;
+ overhead_set = true;
+ } else if (strcmp(*argv, "docsis-downstream") == 0) {
+ atm = 0;
+ overhead += 35 - 14;
+ overhead_set = true;
+ } else if (strcmp(*argv, "docsis-upstream-ip") == 0) {
+ atm = 0;
+ overhead += 28;
+ overhead_set = true;
+ } else if (strcmp(*argv, "docsis-upstream") == 0) {
+ atm = 0;
+ overhead += 28 - 14;
+ overhead_set = true;
+
+ /* Various ADSL framing schemes, all over ATM cells */
+ } else if (strcmp(*argv, "ipoa-vcmux") == 0) {
+ atm = 1;
+ overhead += 8;
@ -281,20 +312,23 @@
+ overhead += 40;
+ overhead_set = true;
+
+ /* Typical VDSL2 framing schemes */
+ /* NB: PTM includes HDLC's 0x7D/7E expansion, adds extra 1/128 */
+ /* Typical VDSL2 framing schemes, both over PTM */
+ /* PTM has 64b/65b coding which absorbs some bandwidth */
+ } else if (strcmp(*argv, "pppoe-ptm") == 0) {
+ atm = 0;
+ atm = 2;
+ overhead += 27;
+ overhead_set = true;
+ } else if (strcmp(*argv, "bridged-ptm") == 0) {
+ atm = 0;
+ atm = 2;
+ overhead += 19;
+ overhead_set = true;
+
+ } else if (strcmp(*argv, "via-ethernet") == 0) {
+ /*
+ * The above overheads are relative to an IP packet,
+ * but if the physical interface is Ethernet, Linux
+ * includes Ethernet framing overhead already.
+ * but Linux includes Ethernet framing overhead already
+ * if we are shaping an Ethernet interface rather than
+ * an IP interface.
+ */
+ overhead -= 14;
+ overhead_set = true;
@ -371,6 +405,8 @@
+ addattr_l(n, 1024, TCA_CAKE_AUTORATE, &autorate, sizeof(autorate));
+ if (memlimit)
+ addattr_l(n, 1024, TCA_CAKE_MEMORY, &memlimit, sizeof(memlimit));
+ if (nat != -1)
+ addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
+
+ tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+ return 0;
@ -387,6 +423,7 @@
+ unsigned memlimit = 0;
+ int overhead = 0;
+ int atm = 0;
+ int nat = 0;
+ int autorate = 0;
+ SPRINT_BUF(b1);
+ SPRINT_BUF(b2);
@ -439,6 +476,8 @@
+ if (tb[TCA_CAKE_FLOW_MODE] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_FLOW_MODE]) >= sizeof(__u32)) {
+ flowmode = rta_getattr_u32(tb[TCA_CAKE_FLOW_MODE]);
+ nat = !!(flowmode & 64);
+ flowmode &= ~64;
+ switch(flowmode) {
+ case 0:
+ fprintf(f, "flowblind ");
@ -468,6 +507,9 @@
+ fprintf(f, "(?flowmode?) ");
+ break;
+ };
+
+ if(nat)
+ fprintf(f, "nat ");
+ }
+ if (tb[TCA_CAKE_ATM] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_ATM]) >= sizeof(__u32)) {
@ -485,8 +527,10 @@
+ if (interval)
+ fprintf(f, "rtt %s ", sprint_time(interval, b2));
+
+ if (atm)
+ if (atm == 1)
+ fprintf(f, "atm ");
+ else if (atm == 2)
+ fprintf(f, "ptm ");
+ else if (overhead)
+ fprintf(f, "noatm ");
+

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