This series adds AF_XDP zero coppy support to icssg driver.
Tests were performed on AM64x-EVM with xdpsock application [1].
A clear improvement is seen Transmit (txonly) and receive (rxdrop) for 64 byte packets. 1500 byte test seems to be limited by line rate (1G link) so no improvement seen there in packet rate
Having some issue with l2fwd as the benchmarking numbers show 0 for 64 byte packets after forwading first batch packets and I am currently looking into it.
AF_XDP performance using 64 byte packets in Kpps. AF_XDP performance using 64 byte packets in Kpps. Benchmark: XDP-SKB XDP-Native XDP-Native(ZeroCopy) rxdrop 253 473 656 txonly 350 354 855 l2fwd 178 240 0
AF_XDP performance using 1500 byte packets in Kpps. Benchmark: XDP-SKB XDP-Native XDP-Native(ZeroCopy) rxdrop 82 82 82 txonly 81 82 82 l2fwd 81 82 82
[1]: https://github.com/xdp-project/bpf-examples/tree/master/AF_XDP-example v4: https://lore.kernel.org/all/20251023093927.1878411-1-m-malladi@ti.com/
v5-v4: - Rebased to the latest tip - Collected Reviewed-by from Jacob Keller jacob.e.keller@intel.com
Meghana Malladi (6): net: ti: icssg-prueth: Add functions to create and destroy Rx/Tx queues net: ti: icssg-prueth: Add XSK pool helpers net: ti: icssg-prueth: Add AF_XDP zero copy for TX net: ti: icssg-prueth: Make emac_run_xdp function independent of page net: ti: icssg-prueth: Add AF_XDP zero copy for RX net: ti: icssg-prueth: Enable zero copy in XDP features
drivers/net/ethernet/ti/icssg/icssg_common.c | 471 ++++++++++++++++--- drivers/net/ethernet/ti/icssg/icssg_prueth.c | 394 +++++++++++++--- drivers/net/ethernet/ti/icssg/icssg_prueth.h | 25 +- 3 files changed, 741 insertions(+), 149 deletions(-)
base-commit: b981e100c19dcd91ce8cca8562c3cdabd4fcf28c