18/01/2021 09:46, Raslan Darawsheh: > From: raktim bhatt > > > Hi All, > > > > I am trying to build a multi-RX-queue dpdk program, using RSS to split the > > incoming traffic into RX queues on a single port. Mellanox ConnectX-5 and > > DPDK Version 19.11 is used for this purpose. It works fine when I use IP > > over Ethernet packets as input. However when the packet contains IP over > > MPLS over Ethernet, RSS does not seem to work. As a result, all packets > > belonging to various flows (with different src & dst IPs, ports over MPLS) > > are all sent into the same RX queue. > > > > > > My queries are > > > > 1. Is there any parameter/techniques in DPDK to distribute MPLS packets to > > multiple RX queues? > > > I've tried it over my setup with testpmd: > ./build/app/dpdk-testpmd -n 4 -w 0000:08:00.0 -- --mbcache=512 -i > --nb-cores=27 --rxq=4 --txq=4 --rss-ip > testpmd> set verbose 1 > testpmd> start > > then tried to send two MPLS packets with different src IP: > packet1 = Ether()/MPLS()/IP(src='1.1.1.1') > packet2 = Ether()/MPLS()/IP(src='1.1.1.2') > > and I see that both packets are being spread over the queues, see the bellow > testpmd dump output: > testpmd> port 0/queue 3: received 1 packets > src=00:00:00:00:00:00 - dst=FF:FF:FF:FF:FF:FF - type=0x8847 - length=60 - > nb_segs=1 - RSS hash=0x43781943 - RSS queue=0x3 - hw ptype: L2_ETHER > L3_IPV4_EXT_UNKNOWN L4_NONFRAG - sw ptype: L2_ETHER - l2_len=14 - Receive > queue=0x3 > ol_flags: PKT_RX_RSS_HASH PKT_RX_L4_CKSUM_UNKNOWN PKT_RX_IP_CKSUM_GOOD > PKT_RX_OUTER_L4_CKSUM_UNKNOWN > port 0/queue 1: received 1 packets > src=00:00:00:00:00:00 - dst=FF:FF:FF:FF:FF:FF - type=0x8847 - length=60 - > nb_segs=1 - RSS hash=0xb8631e05 - RSS queue=0x1 - hw ptype: L2_ETHER > L3_IPV4_EXT_UNKNOWN L4_NONFRAG - sw ptype: L2_ETHER - l2_len=14 - Receive > queue=0x1 > ol_flags: PKT_RX_RSS_HASH PKT_RX_L4_CKSUM_UNKNOWN PKT_RX_IP_CKSUM_GOOD > PKT_RX_OUTER_L4_CKSUM_UNKNOWN > > first packet was received on queue 3 and the second one was received over > queue 1, > by the way, this is with both 19.11.0 and v19.11.6 > > > 2. Is there any way to strip off MPLS tags (between Eth and IP) in > > hardware, something like hw_vlan_strip? > > > For this I'm not sure we have such thing in dpdk maybe Thomas can confirm > this here?
Look for "POP_MPLS" in rte_flow.
