Re: [PATCH 0/2] bnxt_en: Add XDP RSS hash metadata

On 2026-02-13 13:24:26, Chris J Arges wrote:

This patchset adds the ability to use an XDP program to extract the RSS
hash of a given an xdp_md context.

I see net-next is closed: https://netdev.bots.linux.dev/net-next.html
I'll re-send with proper target after Feb 23rd.
--chris


 

For example this XDP program extracts hash and rss_type:

        ret = bpf_xdp_metadata_rx_hash(ctx, &hash, &rss_type);
        if (ret == 0) {
                bpf_printk("XDP: RX hash=0x%x type=%02x", hash, rss_type);
        }

I was able to test this with a Broadcom BCM57414 NIC and verify that the
rss_type and hash were correct for IPv4/6 TCP/UDP and ICMP traffic.

Chris J Arges (2):
  bnxt_en: use bnxt_xdp_buff for xdp context
  bnxt_en: Implement XDP RSS hash metadata extraction

 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 29 ++++++++----
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  2 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 47 +++++++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h |  9 ++++
 4 files changed, 77 insertions(+), 10 deletions(-)

-- 
2.43.0