+diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
+index 8d2530d..028b83c 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
-@@ -850,4 +850,57 @@ struct tc_pie_xstats {
+@@ -850,4 +850,59 @@ struct tc_pie_xstats {
__u32 maxq; /* maximum queue size */
__u32 ecn_mark; /* packets marked with ecn*/
};
+ TCA_CAKE_AUTORATE,
+ TCA_CAKE_MEMORY,
+ TCA_CAKE_NAT,
++ TCA_CAKE_ETHERNET,
++ TCA_CAKE_WASH,
+ __TCA_CAKE_MAX
+};
+#define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1)
+};
+
#endif
+diff --git a/tc/Makefile b/tc/Makefile
+index 56acbaa..d421b8e 100644
--- a/tc/Makefile
+++ b/tc/Makefile
@@ -63,6 +63,7 @@ TCMODULES += q_codel.o
TCMODULES += q_hhf.o
TCMODULES += e_bpf.o
+diff --git a/tc/q_cake.c b/tc/q_cake.c
+new file mode 100644
+index 0000000..14e5aab
--- /dev/null
+++ b/tc/q_cake.c
-@@ -0,0 +1,643 @@
+@@ -0,0 +1,654 @@
+/*
+ * Common Applications Kept Enhanced -- CAKE
+ *
+ " [ besteffort | precedence | diffserv8 | diffserv4* ]\n"
+ " [ flowblind | srchost | dsthost | hosts | flows* | dual-srchost | dual-dsthost | triple-isolate ] [ nat | nonat* ]\n"
+ " [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
++ " [ wash | nowash* ]\n"
+ " [ memlimit LIMIT ]\n"
+ " (* marks defaults)\n");
+}
+ unsigned memlimit = 0;
+ int overhead = 0;
+ bool overhead_set = false;
++ bool overhead_override = false;
++ int wash = -1;
+ int flowmode = -1;
+ int nat = -1;
+ int atm = -1;
+ } else if (strcmp(*argv, "diffserv-llt") == 0) {
+ diffserv = 5;
+
++ } else if (strcmp(*argv, "nowash") == 0) {
++ wash = 0;
++ } else if (strcmp(*argv, "wash") == 0) {
++ wash = 1;
++
+ } else if (strcmp(*argv, "flowblind") == 0) {
+ flowmode = 0;
+ } else if (strcmp(*argv, "srchost") == 0) {
+ atm = 0;
+ overhead = 0;
+ overhead_set = true;
++ overhead_override = true;
+ } else if (strcmp(*argv, "conservative") == 0) {
+ /*
+ * Deliberately over-estimate overhead:
+ overhead = 48;
+ overhead_set = true;
+
-+ /*
-+ * 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;
+
+ } else if (strcmp(*argv, "via-ethernet") == 0) {
+ /*
-+ * The above overheads are relative to an IP packet,
-+ * but Linux includes Ethernet framing overhead already
-+ * if we are shaping an Ethernet interface rather than
-+ * an IP interface.
++ * We used to use this flag to manually compensate for
++ * Linux including the Ethernet header on Ethernet-type
++ * interfaces, but not on IP-type interfaces.
++ *
++ * It is no longer needed, because Cake now adjusts for
++ * that automatically, and is thus ignored.
++ *
++ * It would be deleted entirely, but it appears in the
++ * stats output when the automatic compensation is active.
+ */
-+ overhead -= 14;
-+ overhead_set = true;
+
-+ /* Additional Ethernet-related overheads used by some ISPs */
-+ } else if (strcmp(*argv, "ether-phy") == 0) {
-+ /* ethernet pre-amble & interframe gap 20 bytes
-+ * Linux will have already accounted for MACs & frame type 14 bytes
-+ * you probably want to add an FCS as well*/
-+ overhead += 20;
-+ overhead_set = true;
-+ } else if (strcmp(*argv, "ether-all") == 0) {
++ } else if (strcmp(*argv, "ethernet") == 0) {
+ /* ethernet pre-amble & interframe gap & FCS
-+ * Linux will have already accounted for MACs & frame type 14 bytes
-+ * you may need to add vlan tag*/
-+ overhead += 24;
++ * you may need to add vlan tag */
++ overhead += 38;
+ overhead_set = true;
+
-+ } else if (strcmp(*argv, "ether-fcs") == 0) {
-+ /* Frame Check Sequence */
-+ /* we ignore the minimum frame size, because IP packets usually meet it */
-+ overhead += 4;
-+ overhead_set = true;
++ /* Additional Ethernet-related overhead used by some ISPs */
+ } else if (strcmp(*argv, "ether-vlan") == 0) {
+ /* 802.1q VLAN tag - may be repeated */
+ overhead += 4;
+ overhead_set = true;
+
++ /*
++ * DOCSIS cable shapers account for Ethernet frame with FCS,
++ * but not interframe gap nor preamble.
++ */
++ } else if (strcmp(*argv, "docsis") == 0) {
++ atm = 0;
++ overhead += 18;
++ overhead_set = true;
++
+ } else if (strcmp(*argv, "overhead") == 0) {
+ char* p = NULL;
+ NEXT_ARG();
+ addattr_l(n, 1024, TCA_CAKE_FLOW_MODE, &flowmode, sizeof(flowmode));
+ if (overhead_set)
+ addattr_l(n, 1024, TCA_CAKE_OVERHEAD, &overhead, sizeof(overhead));
++ if (overhead_override) {
++ unsigned zero = 0;
++ addattr_l(n, 1024, TCA_CAKE_ETHERNET, &zero, sizeof(zero));
++ }
+ if (interval)
+ addattr_l(n, 1024, TCA_CAKE_RTT, &interval, sizeof(interval));
+ if (target)
+ addattr_l(n, 1024, TCA_CAKE_MEMORY, &memlimit, sizeof(memlimit));
+ if (nat != -1)
+ addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
++ if (wash != -1)
++ addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
+
+ tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+ return 0;
+ unsigned interval = 0;
+ unsigned memlimit = 0;
+ int overhead = 0;
++ int ethernet = 0;
+ int atm = 0;
+ int nat = 0;
+ int autorate = 0;
++ int wash = 0;
+ SPRINT_BUF(b1);
+ SPRINT_BUF(b2);
+
+ if(nat)
+ fprintf(f, "nat ");
+ }
++ if (tb[TCA_CAKE_WASH] &&
++ RTA_PAYLOAD(tb[TCA_CAKE_WASH]) >= sizeof(__u32)) {
++ wash = rta_getattr_u32(tb[TCA_CAKE_WASH]);
++ }
+ if (tb[TCA_CAKE_ATM] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_ATM]) >= sizeof(__u32)) {
+ atm = rta_getattr_u32(tb[TCA_CAKE_ATM]);
+ RTA_PAYLOAD(tb[TCA_CAKE_OVERHEAD]) >= sizeof(__u32)) {
+ overhead = rta_getattr_u32(tb[TCA_CAKE_OVERHEAD]);
+ }
++ if (tb[TCA_CAKE_ETHERNET] &&
++ RTA_PAYLOAD(tb[TCA_CAKE_ETHERNET]) >= sizeof(__u32)) {
++ ethernet = rta_getattr_u32(tb[TCA_CAKE_ETHERNET]);
++ }
+ if (tb[TCA_CAKE_RTT] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_RTT]) >= sizeof(__u32)) {
+ interval = rta_getattr_u32(tb[TCA_CAKE_RTT]);
+ }
+
++ if (wash)
++ fprintf(f,"wash ");
++
+ if (interval)
+ fprintf(f, "rtt %s ", sprint_time(interval, b2));
+
-+ if (atm == 1)
-+ fprintf(f, "atm ");
-+ else if (atm == 2)
-+ fprintf(f, "ptm ");
-+ else if (overhead)
-+ fprintf(f, "noatm ");
++ if (!atm && overhead == ethernet) {
++ fprintf(f, "raw ");
++ } else {
++ if (atm == 1)
++ fprintf(f, "atm ");
++ else if (atm == 2)
++ fprintf(f, "ptm ");
++ else
++ fprintf(f, "noatm ");
+
-+ if (overhead || atm)
+ fprintf(f, "overhead %d ", overhead);
+
-+ if (!atm && !overhead)
-+ fprintf(f, "raw ");
++ // This is actually the *amount* of automatic compensation, but we only report
++ // its presence as a boolean for now.
++ if (ethernet)
++ fprintf(f, "via-ethernet ");
++ }
+
+ if (memlimit)
+ fprintf(f, "memlimit %s", sprint_size(memlimit, b1));
projects / openwrt / staging / lynxis / omap.git / commitdiff