From patchwork Tue Sep 29 20:25:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 289364 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94DDCC52D18 for ; Tue, 29 Sep 2020 20:37:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 190AD20774 for ; Tue, 29 Sep 2020 20:37:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="W50wQ+Ga"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="aYCDVQdM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729898AbgI2Uhq (ORCPT ); Tue, 29 Sep 2020 16:37:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729576AbgI2UgX (ORCPT ); Tue, 29 Sep 2020 16:36:23 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C47C3C0613D9; Tue, 29 Sep 2020 13:36:12 -0700 (PDT) Message-Id: <20200929203502.084703195@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601411771; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=LrldQJQw6qypyNQybdI02NG+9/ckddJHjYgk5hlEHHQ=; b=W50wQ+GaNd8R4tSNqTICBdQk/2YIRsw/r76XqikWEnHF2rKl0QKsifKzK/4rpV3JddmiKx 5X9q0gc1DwFsx2n5C1lF6JO6j7qwcsl6yNq7fwB7V/6Q3n4KpRPYmTGSv4n00HudhtSxvI fjbk1EPV24IDWvSw+12gnFlG6RBnY4uxWmnrJKPSZdd09LynExhub++x0V0wIKoQTOdcTv vVCFtXASKKnFemHFsTagTjSzQsahMlM34laJrI1RDyJofrTl+M2kz5U+WEWJu5Fu9EURdU 9bxJK/Fruu0QWmbEeCkavOHYNgBbhfl4d0nmx0aubAlDJFkABGcbkXcnjeIWqA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601411771; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=LrldQJQw6qypyNQybdI02NG+9/ckddJHjYgk5hlEHHQ=; b=aYCDVQdMR8R7kgHsLF+gsqoZURiRjoLdvdDdOUWZI6x+sX8Je6Xb+rKLwd0K1HqRODWQKz pZYqigkaNJN28jAA== Date: Tue, 29 Sep 2020 22:25:35 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Paul McKenney , Matthew Wilcox , Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jakub Kicinski , netdev@vger.kernel.org, Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Sebastian Andrzej Siewior , Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Kalle Valo , linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih Subject: [patch V2 26/36] net: brcmfmac: Convey execution context via argument to brcmf_netif_rx() References: <20200929202509.673358734@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org bcrmgf_netif_rx() uses in_interrupt to chose between netif_rx() and netif_rx_ni(). in_interrupt() usage in drivers is phased out. Convey the execution mode via an 'inirq' argument through the various callchains leading to brcmf_netif_rx(): brcmf_pcie_isr_thread() <- Task context brcmf_proto_msgbuf_rx_trigger() brcmf_msgbuf_process_rx() brcmf_msgbuf_process_msgtype() brcmf_msgbuf_process_rx_complete() brcmf_netif_mon_rx() brcmf_netif_rx(isirq = false) brcmf_netif_rx(isirq = false) brcmf_sdio_readframes() <- Task context sdio_claim_host() might sleep brcmf_rx_frame(isirq = false) brcmf_sdio_rxglom() <- Task context sdio_claim_host() might sleep brcmf_rx_frame(isirq = false) brcmf_usb_rx_complete() <- Interrupt context brcmf_rx_frame(isirq = true) brcmf_rx_frame() brcmf_proto_rxreorder() brcmf_proto_bcdc_rxreorder() brcmf_fws_rxreorder() brcmf_netif_rx() brcmf_netif_rx() Signed-off-by: Thomas Gleixner Cc: Arend van Spriel Cc: Kalle Valo Reviewed-by: Arend van Spriel --- V2: New patch. Using an argument instead of switching to netif_rx_any_context() --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 4 +-- drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 3 +- drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 16 ++++++------ drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h | 2 - drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c | 10 +++---- drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h | 2 - drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 5 ++- drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h | 6 ++-- drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 4 +-- drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 2 - 10 files changed, 29 insertions(+), 25 deletions(-) --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c @@ -397,9 +397,9 @@ brcmf_proto_bcdc_add_tdls_peer(struct br } static void brcmf_proto_bcdc_rxreorder(struct brcmf_if *ifp, - struct sk_buff *skb) + struct sk_buff *skb, bool inirq) { - brcmf_fws_rxreorder(ifp, skb); + brcmf_fws_rxreorder(ifp, skb, inirq); } static void --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h @@ -249,7 +249,8 @@ int brcmf_bus_reset(struct brcmf_bus *bu */ /* Receive frame for delivery to OS. Callee disposes of rxp. */ -void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event); +void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event, + bool inirq); /* Receive async event packet from firmware. Callee disposes of rxp. */ void brcmf_rx_event(struct device *dev, struct sk_buff *rxp); --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -395,7 +395,7 @@ void brcmf_txflowblock_if(struct brcmf_i spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); } -void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) +void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq) { /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new * STA connects to the AP interface. This is an obsoleted standard most @@ -418,14 +418,15 @@ void brcmf_netif_rx(struct brcmf_if *ifp ifp->ndev->stats.rx_packets++; brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); - if (in_interrupt()) + if (inirq) { netif_rx(skb); - else + } else { /* If the receive is not processed inside an ISR, * the softirqd must be woken explicitly to service * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). */ netif_rx_ni(skb); + } } void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) @@ -474,7 +475,7 @@ void brcmf_netif_mon_rx(struct brcmf_if skb->pkt_type = PACKET_OTHERHOST; skb->protocol = htons(ETH_P_802_2); - brcmf_netif_rx(ifp, skb); + brcmf_netif_rx(ifp, skb, false); } static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, @@ -496,7 +497,8 @@ static int brcmf_rx_hdrpull(struct brcmf return 0; } -void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event) +void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event, + bool inirq) { struct brcmf_if *ifp; struct brcmf_bus *bus_if = dev_get_drvdata(dev); @@ -508,14 +510,14 @@ void brcmf_rx_frame(struct device *dev, return; if (brcmf_proto_is_reorder_skb(skb)) { - brcmf_proto_rxreorder(ifp, skb); + brcmf_proto_rxreorder(ifp, skb, inirq); } else { /* Process special event packets */ if (handle_event) brcmf_fweh_process_skb(ifp->drvr, skb, BCMILCP_SUBTYPE_VENDOR_LONG); - brcmf_netif_rx(ifp, skb); + brcmf_netif_rx(ifp, skb, inirq); } } --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h @@ -208,7 +208,7 @@ void brcmf_remove_interface(struct brcmf void brcmf_txflowblock_if(struct brcmf_if *ifp, enum brcmf_netif_stop_reason reason, bool state); void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success); -void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb); +void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq); void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb); void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked); int brcmf_net_mon_attach(struct brcmf_if *ifp); --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c @@ -1664,7 +1664,7 @@ static void brcmf_rxreorder_get_skb_list rfi->pend_pkts -= skb_queue_len(skb_list); } -void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt) +void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt, bool inirq) { struct brcmf_pub *drvr = ifp->drvr; u8 *reorder_data; @@ -1682,7 +1682,7 @@ void brcmf_fws_rxreorder(struct brcmf_if /* validate flags and flow id */ if (flags == 0xFF) { bphy_err(drvr, "invalid flags...so ignore this packet\n"); - brcmf_netif_rx(ifp, pkt); + brcmf_netif_rx(ifp, pkt, inirq); return; } @@ -1694,7 +1694,7 @@ void brcmf_fws_rxreorder(struct brcmf_if if (rfi == NULL) { brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n", flow_id); - brcmf_netif_rx(ifp, pkt); + brcmf_netif_rx(ifp, pkt, inirq); return; } @@ -1719,7 +1719,7 @@ void brcmf_fws_rxreorder(struct brcmf_if rfi = kzalloc(buf_size, GFP_ATOMIC); if (rfi == NULL) { bphy_err(drvr, "failed to alloc buffer\n"); - brcmf_netif_rx(ifp, pkt); + brcmf_netif_rx(ifp, pkt, inirq); return; } @@ -1833,7 +1833,7 @@ void brcmf_fws_rxreorder(struct brcmf_if netif_rx: skb_queue_walk_safe(&reorder_list, pkt, pnext) { __skb_unlink(pkt, &reorder_list); - brcmf_netif_rx(ifp, pkt); + brcmf_netif_rx(ifp, pkt, inirq); } } --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h @@ -42,6 +42,6 @@ void brcmf_fws_add_interface(struct brcm void brcmf_fws_del_interface(struct brcmf_if *ifp); void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb); void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked); -void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb); +void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq); #endif /* FWSIGNAL_H_ */ --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c @@ -536,7 +536,8 @@ static int brcmf_msgbuf_hdrpull(struct b return -ENODEV; } -static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb) +static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb, + bool inirq) { } @@ -1190,7 +1191,7 @@ brcmf_msgbuf_process_rx_complete(struct } skb->protocol = eth_type_trans(skb, ifp->ndev); - brcmf_netif_rx(ifp, skb); + brcmf_netif_rx(ifp, skb, false); } static void brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf *msgbuf, --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h @@ -32,7 +32,7 @@ struct brcmf_proto { u8 peer[ETH_ALEN]); void (*add_tdls_peer)(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN]); - void (*rxreorder)(struct brcmf_if *ifp, struct sk_buff *skb); + void (*rxreorder)(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq); void (*add_if)(struct brcmf_if *ifp); void (*del_if)(struct brcmf_if *ifp); void (*reset_if)(struct brcmf_if *ifp); @@ -109,9 +109,9 @@ static inline bool brcmf_proto_is_reorde } static inline void -brcmf_proto_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb) +brcmf_proto_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq) { - ifp->drvr->proto->rxreorder(ifp, skb); + ifp->drvr->proto->rxreorder(ifp, skb, inirq); } static inline void --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -1704,7 +1704,7 @@ static u8 brcmf_sdio_rxglom(struct brcmf brcmf_rx_event(bus->sdiodev->dev, pfirst); else brcmf_rx_frame(bus->sdiodev->dev, pfirst, - false); + false, false); bus->sdcnt.rxglompkts++; } @@ -2038,7 +2038,7 @@ static uint brcmf_sdio_readframes(struct brcmf_rx_event(bus->sdiodev->dev, pkt); else brcmf_rx_frame(bus->sdiodev->dev, pkt, - false); + false, false); /* prepare the descriptor for the next read */ rd->len = rd->len_nxtfrm << 4; --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -532,7 +532,7 @@ static void brcmf_usb_rx_complete(struct if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP || devinfo->bus_pub.state == BRCMFMAC_USB_STATE_SLEEP) { skb_put(skb, urb->actual_length); - brcmf_rx_frame(devinfo->dev, skb, true); + brcmf_rx_frame(devinfo->dev, skb, true, true); brcmf_usb_rx_refill(devinfo, req); usb_mark_last_busy(urb->dev); } else {