From patchwork Sun Jun 3 18:20:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Erik Stromdahl X-Patchwork-Id: 10445525 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B7685601BC for ; Sun, 3 Jun 2018 18:22:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A75D528A4D for ; Sun, 3 Jun 2018 18:22:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9BC3228B1C; Sun, 3 Jun 2018 18:22:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3285828A4D for ; Sun, 3 Jun 2018 18:22:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751439AbeFCSWc (ORCPT ); Sun, 3 Jun 2018 14:22:32 -0400 Received: from mail-lf0-f66.google.com ([209.85.215.66]:45801 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750991AbeFCSWT (ORCPT ); Sun, 3 Jun 2018 14:22:19 -0400 Received: by mail-lf0-f66.google.com with SMTP id n3-v6so21785904lfe.12 for ; Sun, 03 Jun 2018 11:22:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=5DMKLZYTmlJFvoUPhMn4hyhqS7ajK0ZkKEyyR3/euZE=; b=Fr5TYjtp6KllIFK6SOea8CAdqemyYqbu5jc0IfzguD/5yE3CpIjsC3hhhnjBsbBt5e JIBqFBxmcZfujpqj+6MsWaea6Nb2vTC7kDkTnDDum86Nd5P4URqehLaQbXti3FqD11OS JkjOyfkq6oEL5Wf2E5SMM5ff6mox5nx0S8o3Dq05g3qXYMPHhQ9psWg1QYHRT8SAmu/Y +nYGhLBVIsqHK+dcuDRePTKYTkxQi8SsRVRn23pUsAQ5pyKnFk6wUMM2YWv2l+BIFn8+ TTqg/nd1ss1mLJrBgj3sH0C9iFqGaGTJDnVQ1GEbiP5/KXHYtN89/jbvfXNkVZVHDJjD CJ0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=5DMKLZYTmlJFvoUPhMn4hyhqS7ajK0ZkKEyyR3/euZE=; b=rUAtg3hCh/QhBPqGnnSaoYd2QN3FeKi6cezL011Qp1RQDsRqQOgQb++ASW/IACY3Rh UEjK1qyCzjriK2cYCW3DX+xvD4r5jbuRQNtde+pF4fdnP08806YVwBZpSoAyx29dEj0s 6LYyazRispXw21cPtTEbAjptOqUr2Xw6dtmrANIFchOdo66XXzliVNDlxfz7HrCq7SPu f6fbs+Oxy+/+x0TaEqFbeO6YjUjhL1Sd5LupGymoObrqOLiF9Ervlj3YVmnkOIrBmkaV 5CP8uYa9DztVisWRc+0kJlhtNVb2uxRBe8DInf/8BtXGLwFvoQMZr72PPSQO3dl7S34V orCg== X-Gm-Message-State: ALKqPwd8HnHaFRV0jorBtl+sX84EQwbtBMjaaIGW1YfkCc17rFqFaoxy ke/6qRXLWAmHJRUuF/371kg= X-Google-Smtp-Source: ADUXVKKIIE6o6NRwSSFgBAzypqmclPZoejxDHHu/MYc+ubpKg3Dg3nAsDAtKAXQPsah+QgETNkv+lg== X-Received: by 2002:a19:3b0e:: with SMTP id i14-v6mr10936316lfa.48.1528050137827; Sun, 03 Jun 2018 11:22:17 -0700 (PDT) Received: from localhost.localdomain (90-227-62-61-no75.tbcn.telia.com. [90.227.62.61]) by smtp.gmail.com with ESMTPSA id l200-v6sm4980562lfe.77.2018.06.03.11.22.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 03 Jun 2018 11:22:17 -0700 (PDT) From: Erik Stromdahl To: kvalo@qca.qualcomm.com, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org Cc: Erik Stromdahl Subject: [RFC v5 10/12] ath10k: htt: High latency TX support Date: Sun, 3 Jun 2018 20:20:27 +0200 Message-Id: <20180603182029.8914-11-erik.stromdahl@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180603182029.8914-1-erik.stromdahl@gmail.com> References: <20180603182029.8914-1-erik.stromdahl@gmail.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add HTT TX function for HL interfaces. Intended for SDIO and USB. Signed-off-by: Erik Stromdahl --- drivers/net/wireless/ath/ath10k/htt_tx.c | 92 ++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index 740e8740844e..87f7b221b6a8 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -495,6 +495,9 @@ int ath10k_htt_tx_start(struct ath10k_htt *htt) if (htt->tx_mem_allocated) return 0; + if (ar->dev_type == ATH10K_DEV_TYPE_HL) + return 0; + ret = ath10k_htt_tx_alloc_buf(htt); if (ret) goto free_idr_pending_tx; @@ -1188,6 +1191,94 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) return res; } +#define HTT_TX_HL_NEEDED_HEADROOM \ + (unsigned int)(sizeof(struct htt_cmd_hdr) + \ + sizeof(struct htt_data_tx_desc) + \ + sizeof(struct ath10k_htc_hdr)) + +static int ath10k_htt_tx_hl(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode, + struct sk_buff *msdu) +{ + struct ath10k *ar = htt->ar; + int res, data_len; + struct htt_cmd_hdr *cmd_hdr; + struct htt_data_tx_desc *tx_desc; + struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); + struct sk_buff *tmp_skb; + bool is_eth = (txmode == ATH10K_HW_TXRX_ETHERNET); + u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu); + u8 tid = ath10k_htt_tx_get_tid(msdu, is_eth); + u8 flags0 = 0; + u16 flags1 = 0; + + data_len = msdu->len; + + switch (txmode) { + case ATH10K_HW_TXRX_RAW: + case ATH10K_HW_TXRX_NATIVE_WIFI: + flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; + /* fall through */ + case ATH10K_HW_TXRX_ETHERNET: + flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); + break; + case ATH10K_HW_TXRX_MGMT: + flags0 |= SM(ATH10K_HW_TXRX_MGMT, + HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); + flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; + break; + } + + if (skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) + flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; + + flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID); + flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID); + if (msdu->ip_summed == CHECKSUM_PARTIAL && + !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) { + flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD; + flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD; + } + + /* Prepend the HTT header and TX desc struct to the data message + * and realloc the skb if it does not have enough headroom. + */ + if (skb_headroom(msdu) < HTT_TX_HL_NEEDED_HEADROOM) { + tmp_skb = msdu; + + ath10k_dbg(htt->ar, ATH10K_DBG_HTT, + "Not enough headroom in skb. Current headroom: %u, needed: %u. Reallocating...\n", + skb_headroom(msdu), HTT_TX_HL_NEEDED_HEADROOM); + msdu = skb_realloc_headroom(msdu, HTT_TX_HL_NEEDED_HEADROOM); + kfree_skb(tmp_skb); + if (!msdu) { + ath10k_warn(htt->ar, "htt hl tx: Unable to realloc skb!\n"); + res = -ENOMEM; + goto out; + } + } + + skb_push(msdu, sizeof(*cmd_hdr)); + skb_push(msdu, sizeof(*tx_desc)); + cmd_hdr = (struct htt_cmd_hdr *)msdu->data; + tx_desc = (struct htt_data_tx_desc *)(msdu->data + sizeof(*cmd_hdr)); + + cmd_hdr->msg_type = HTT_H2T_MSG_TYPE_TX_FRM; + tx_desc->flags0 = flags0; + tx_desc->flags1 = __cpu_to_le16(flags1); + tx_desc->len = __cpu_to_le16(data_len); + tx_desc->id = 0; + tx_desc->frags_paddr = 0; /* always zero */ + /* Initialize peer_id to INVALID_PEER because this is NOT + * Reinjection path + */ + tx_desc->peerid = __cpu_to_le32(HTT_INVALID_PEERID); + + res = ath10k_htc_send(&htt->ar->htc, htt->eid, msdu); + +out: + return res; +} + static int ath10k_htt_tx_32(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode, struct sk_buff *msdu) @@ -1622,6 +1713,7 @@ static const struct ath10k_htt_tx_ops htt_tx_ops_64 = { static const struct ath10k_htt_tx_ops htt_tx_ops_hl = { .htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_hl, .htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_32, + .htt_tx = ath10k_htt_tx_hl, }; void ath10k_htt_set_tx_ops(struct ath10k_htt *htt)