Hi! This series optimizes the nfp XDP TX performance a little bit. I run quick tests on an Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz. Single core/queue performance for both touch and drop and touch and forward is above 20Mpps @64B packets, drop being 2Mpps faster. I think this is max for a single queue on the low power NFPs.
There are also a few minor fixes included for code in net-next. Jakub Kicinski (6): nfp: replace -ENOTSUPP with -EOPNOTSUPP nfp: drop rx_ring param from buffer allocation nfp: do simple XDP TX buffer recycling nfp: avoid reading TX queue indexes from the device nfp: don't completely refuse to work with old flashes nfp: provide 256 bytes of XDP headroom in all configurations drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c | 24 +-- drivers/net/ethernet/netronome/nfp/nfp_net.h | 6 +- .../net/ethernet/netronome/nfp/nfp_net_common.c | 171 +++++++++++---------- .../net/ethernet/netronome/nfp/nfp_net_ethtool.c | 2 +- .../net/ethernet/netronome/nfp/nfp_net_offload.c | 12 +- .../net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c | 4 +- 6 files changed, 118 insertions(+), 101 deletions(-) -- 2.11.0
