This patch set continues on from the changes in part 1, and depends upon that patch set.
This patch set reorders the fields in the mbuf structure and splits the structure across two cache lines, given lots of new space for new fields to be added. This set uses some of that space by expanding the ol_flags field and by adding in a packet_type field. A part 3 patchset is planned to introduce other new fields into the new mbuf structure. With the splitting of the mbuf across multiple cache lines, performance degradations are seen inside the drivers, both fast-path and slow path. For the fast-path, this patchset reworks the way in which the pool pointer is used to free packets post-TX, which removes the perf regression. For the slow path, an alternative approach is taken - a new scattered packets RX function is introduced into the vector PMD. Using this function, throughput for the slow path RX-TX using testpmd is increased by up to 20% over the original baseline. Bruce Richardson (12): mbuf: reorder fields by time of use mbuf: add packet_type field mbuf: expand ol_flags field to 64-bits mbuf: introduce a flag to indicate a control mbuf mbuf: minor changes for readability mbuf: use macros only to access the mbuf metadata mbuf: add named points inside the mbuf structure ixgbe: rework vector pmd following mbuf changes mbuf: split mbuf across two cache lines. mbuf: move l2_len and l3_len to second cache line ixgbe: Fix perf regression due to moved pool ptr ixgbe: Improve slow-path perf: vector scattered RX Olivier Matz (1): mbuf: replace data pointer by an offset app/test-pmd/csumonly.c | 2 +- app/test-pmd/flowgen.c | 2 +- app/test-pmd/icmpecho.c | 2 +- app/test-pmd/ieee1588fwd.c | 4 +- app/test-pmd/macfwd-retry.c | 2 +- app/test-pmd/macfwd.c | 2 +- app/test-pmd/macswap.c | 2 +- app/test-pmd/rxonly.c | 2 +- app/test-pmd/testpmd.c | 2 +- app/test-pmd/txonly.c | 7 +- app/test/packet_burst_generator.c | 7 +- app/test/test_mbuf.c | 8 +- app/test/test_table_acl.c | 7 +- app/test/test_table_pipeline.c | 8 +- examples/exception_path/main.c | 3 +- examples/vhost/main.c | 37 +-- examples/vhost_xen/main.c | 14 +- lib/librte_ip_frag/rte_ipv4_fragmentation.c | 6 +- lib/librte_ip_frag/rte_ipv6_fragmentation.c | 6 +- lib/librte_mbuf/rte_mbuf.c | 10 +- lib/librte_mbuf/rte_mbuf.h | 127 +++++---- lib/librte_pmd_bond/rte_eth_bond_pmd.c | 4 +- lib/librte_pmd_e1000/em_rxtx.c | 12 +- lib/librte_pmd_e1000/igb_rxtx.c | 13 +- lib/librte_pmd_i40e/i40e_rxtx.c | 17 +- lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 56 ++-- lib/librte_pmd_ixgbe/ixgbe_rxtx.h | 22 +- lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c | 390 +++++++++++++++++----------- lib/librte_pmd_pcap/rte_eth_pcap.c | 9 +- lib/librte_pmd_virtio/virtio_rxtx.c | 10 +- lib/librte_pmd_virtio/virtqueue.h | 3 +- lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c | 5 +- lib/librte_pmd_xenvirt/rte_eth_xenvirt.c | 2 +- 33 files changed, 466 insertions(+), 337 deletions(-) -- 1.9.3
