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Miller" , Jakub Kicinski , John Fastabend , Stanislav Fomichev Cc: kernel-team@cloudflare.com, jbrandeburg@cloudflare.com, Andrew Lunn , Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: Re: [PATCH 0/2] bnxt_en: Add XDP RSS hash metadata Message-ID: References: <20260213192449.1294830-1-carges@cloudflare.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260213192449.1294830-1-carges@cloudflare.com> 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