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Miller" Cc: Alexander Duyck , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Andrew Lunn , Simon Horman , Mike Marciniszyn , Lee Trager , Jacob Keller , Dimitri Daskalakis , Mohsin Bashir , Mina Almasry , netdev@vger.kernel.org, kernel-team@meta.com Subject: [PATCH net 0/2] Fix page fragment handling when PAGE_SIZE > 4K Date: Tue, 24 Mar 2026 12:51:21 -0700 Message-ID: <20260324195123.3486219-1-dimitri.daskalakis1@gmail.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Dimitri Daskalakis FBNIC operates on fixed size descriptors (4K). When the OS supports pages larger than 4K, we fragment the page across multiple descriptors. While performance testing, I found several issues with our page fragment handling, resulting in low throughput and potential RX stalls. Dimitri Daskalakis (2): eth: fbnic: Account for page fragments when updating BDQ tail eth: fbnic: Fix debugfs output for BDQ's with page frags drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c | 2 +- drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) -- 2.52.0