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[144.49.247.121]) by smtp-relay.gmail.com with ESMTPS id 5a478bee46e88-3081e5ee91asm427575eec.10.2026.06.14.00.25.39 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 14 Jun 2026 00:25:40 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-dy1-f198.google.com with SMTP id 5a478bee46e88-30762d67a64so3344901eec.0 for ; Sun, 14 Jun 2026 00:25:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1781421938; x=1782026738; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=NwzZFIxcbRJ+s5HDyZ0yU5a7I0wsgJseSsFu0xR3apw=; b=fVzfi4DYKi2GjAOsl2/HHtkKwB/GnM41TVViJekgFABKrIGUvKXLhMd3uV913w0xAw CJ0E4Vym3bUYN2oXx4sJGqAu/2Q2WSwwiUkwMn8+CLT1CR7HOspW6ejfrBGuB2F31/Zg xOUlzR0ND4DPYZU7K/ApMaZH3tMcbnZJME0Ds= X-Received: by 2002:a05:7300:6d22:b0:2f7:d419:dee0 with SMTP id 5a478bee46e88-3081ff3da2dmr5313555eec.6.1781421937820; Sun, 14 Jun 2026 00:25:37 -0700 (PDT) X-Received: by 2002:a05:7300:6d22:b0:2f7:d419:dee0 with SMTP id 5a478bee46e88-3081ff3da2dmr5313546eec.6.1781421937193; Sun, 14 Jun 2026 00:25:37 -0700 (PDT) Received: from lvnvda3289.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3081ea43bc7sm10043280eec.22.2026.06.14.00.25.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Jun 2026 00:25:36 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, pavan.chebbi@broadcom.com, andrew.gospodarek@broadcom.com Subject: [PATCH net-next v3 14/15] bnxt_en: Add support for inline transmit BDs Date: Sun, 14 Jun 2026 00:24:06 -0700 Message-ID: <20260614072407.2761092-15-michael.chan@broadcom.com> X-Mailer: git-send-email 2.45.4 In-Reply-To: <20260614072407.2761092-1-michael.chan@broadcom.com> References: <20260614072407.2761092-1-michael.chan@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Newer chips (P5_PLUS) support inline transmit BDs that contain extra data. One such use case is to transmit out-of-sequence kTLS packets with encryption enabled. To account for these inline BDs during TX completion, we add the inline_data_bds field to struct bnxt_sw_tx_bd (tx_buf). tx_buf->is_push will always be set when sending these inline BDs as the operation is similar to push packets. tx_buf->skb will always be NULL as there is no associated SKB. The next patch will make use of this feature. Reviewed-by: Andy Gospodarek Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 15 ++++++++++++--- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 3560ee5525fd..ce3175721be2 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -848,7 +848,7 @@ static bool __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr, head_buf = tx_buf; skb = tx_buf->skb; - if (unlikely(!skb)) { + if (unlikely(!skb && !tx_buf->is_push)) { bnxt_sched_reset_txr(bp, txr, cons); return rc; } @@ -860,13 +860,22 @@ static bool __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr, } cons = NEXT_TX(cons); - tx_pkts++; - tx_bytes += skb->len; + if (skb) { + tx_pkts++; + tx_bytes += skb->len; + } tx_buf->skb = NULL; tx_buf->is_ts_pkt = 0; if (tx_buf->is_push) { tx_buf->is_push = 0; + cons += tx_buf->inline_data_bds; + tx_buf->inline_data_bds = 0; + if (!skb) { + /* presync BD */ + cons = NEXT_TX(cons); + continue; + } goto next_tx_int; } diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 4ca36b99c4a3..500bb9171274 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -917,6 +917,7 @@ struct bnxt_sw_tx_bd { u8 is_push; u8 is_sw_gso; u8 action; + u8 inline_data_bds; unsigned short nr_frags; union { u16 rx_prod; -- 2.51.0