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[144.49.247.25]) by smtp-relay.gmail.com with ESMTPS id 6a1803df08f44-8f1a5387e0csm440656d6.15.2026.06.29.11.50.32 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Jun 2026 11:50:33 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qt1-f200.google.com with SMTP id d75a77b69052e-51c0199faafso13996681cf.3 for ; Mon, 29 Jun 2026 11:50:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1782759032; x=1783363832; 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=fJNguK9akImV8lK82j7ByChpMDHPYd8i6dcAmIH/J9c=; b=K2cHa1RhoDw5YjW4PaqktaguPIF/rrfv9qcCRmNly0hEH18tbMMuoQpl4kZ2+vRtYW m1tz4bGB5FfgknQ9rkDVqNuOh9hOOUJaqhXwuUg+eeL27luIJ818ESYynCplZTDys5xY 1tY8Kxgk0bfJv/3VR8uvkKbiD94Ak7Zn3gcWk= X-Received: by 2002:a05:622a:2599:b0:51b:60f1:6895 with SMTP id d75a77b69052e-51c1073fe7emr8046601cf.2.1782759031863; Mon, 29 Jun 2026 11:50:31 -0700 (PDT) X-Received: by 2002:a05:622a:2599:b0:51b:60f1:6895 with SMTP id d75a77b69052e-51c1073fe7emr8046071cf.2.1782759031204; Mon, 29 Jun 2026 11:50:31 -0700 (PDT) Received: from lvnvda3289.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-51c109ffbb3sm2176341cf.23.2026.06.29.11.50.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2026 11:50:30 -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 v4 14/15] bnxt_en: Add support for inline transmit BDs Date: Mon, 29 Jun 2026 11:49:20 -0700 Message-ID: <20260629184921.3496727-15-michael.chan@broadcom.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260629184921.3496727-1-michael.chan@broadcom.com> References: <20260629184921.3496727-1-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 62c1eea01647..ad6c8644e09c 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 a726940a7014..1a34e334bc18 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