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

[Chris J Arges <carges@cloudflare.com>]

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

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