diff options
Diffstat (limited to 'package/network/utils/iproute2/patches')
| -rw-r--r-- | package/network/utils/iproute2/patches/190-add-cake-to-tc.patch | 82 |
1 files changed, 80 insertions, 2 deletions
diff --git a/package/network/utils/iproute2/patches/190-add-cake-to-tc.patch b/package/network/utils/iproute2/patches/190-add-cake-to-tc.patch index b44efac..fa09b4d 100644 --- a/package/network/utils/iproute2/patches/190-add-cake-to-tc.patch +++ b/package/network/utils/iproute2/patches/190-add-cake-to-tc.patch @@ -121,7 +121,7 @@ #endif --- /dev/null +++ b/man/man8/tc-cake.8 -@@ -0,0 +1,632 @@ +@@ -0,0 +1,710 @@ +.TH CAKE 8 "19 July 2018" "iproute2" "Linux" +.SH NAME +CAKE \- Common Applications Kept Enhanced (CAKE) @@ -197,6 +197,12 @@ +] +.br +[ ++.BR split-gso* ++| ++.BR no-split-gso ++] ++.br ++[ +.BR ack-filter +| +.BR ack-filter-aggressive @@ -670,6 +676,78 @@ +case for Comcast Cable, among others), it is best to use a single queue +"besteffort" mode with wash. + ++.PP ++.B split-gso ++ ++.br ++ This option controls whether CAKE will split General Segmentation ++Offload (GSO) super-packets into their on-the-wire components and ++dequeue them individually. ++ ++.br ++Super-packets are created by the networking stack to improve efficiency. ++However, because they are larger they take longer to dequeue, which ++translates to higher latency for competing flows, especially at lower ++bandwidths. CAKE defaults to splitting GSO packets to achieve the lowest ++possible latency. At link speeds higher than 10 Gbps, setting the ++no-split-gso parameter can increase the maximum achievable throughput by ++retaining the full GSO packets. ++ ++.SH OVERRIDING CLASSIFICATION WITH TC FILTERS ++ ++CAKE supports overriding of its internal classification of packets through the ++tc filter mechanism. Packets can be assigned to different priority tins by ++setting the ++.B priority ++field on the skb, and the flow hashing can be overridden by setting the ++.B classid ++parameter. ++ ++.PP ++.B Tin override ++ ++.br ++ To assign a priority tin, the major number of the priority field needs ++to match the qdisc handle of the cake instance; if it does, the minor number ++will be interpreted as the tin index. For example, to classify all ICMP packets ++as 'bulk', the following filter can be used: ++ ++.br ++ # tc qdisc replace dev eth0 handle 1: root cake diffserv3 ++ # tc filter add dev eth0 parent 1: protocol ip prio 1 \\ ++ u32 match icmp type 0 0 action skbedit priority 1:1 ++ ++.PP ++.B Flow hash override ++ ++.br ++ To override flow hashing, the classid can be set. CAKE will interpret ++the major number of the classid as the host hash used in host isolation mode, ++and the minor number as the flow hash used for flow-based queueing. One or both ++of those can be set, and will be used if the relevant flow isolation parameter ++is set (i.e., the major number will be ignored if CAKE is not configured in ++hosts mode, and the minor number will be ignored if CAKE is not configured in ++flows mode). ++ ++.br ++This example will assign all ICMP packets to the first queue: ++ ++.br ++ # tc qdisc replace dev eth0 handle 1: root cake ++ # tc filter add dev eth0 parent 1: protocol ip prio 1 \\ ++ u32 match icmp type 0 0 classid 0:1 ++ ++.br ++If only one of the host and flow overrides is set, CAKE will compute the other ++hash from the packet as normal. Note, however, that the host isolation mode ++works by assigning a host ID to the flow queue; so if overriding both host and ++flow, the same flow cannot have more than one host assigned. In addition, it is ++not possible to assign different source and destination host IDs through the ++override mechanism; if a host ID is assigned, it will be used as both source and ++destination host. ++ ++ ++ +.SH EXAMPLES +# tc qdisc delete root dev eth0 +.br @@ -879,6 +957,7 @@ + __u64 bandwidth = 0; + int ack_filter = -1; + struct rtattr *tail; ++ int split_gso = -1; + int unlimited = 0; + int flowmode = -1; + int autorate = -1; @@ -888,7 +967,6 @@ + int nat = -1; + int atm = -1; + int mpu = 0; -+ int split_gso = -1; + + while (argc > 0) { + if (strcmp(*argv, "bandwidth") == 0) { |