Return-path: Received: from mms3.broadcom.com ([216.31.210.19]:3233 "EHLO mms3.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755765Ab3KFWHj (ORCPT ); Wed, 6 Nov 2013 17:07:39 -0500 From: "Arend van Spriel" To: "John W. Linville" cc: linux-wireless@vger.kernel.org, "Arend van Spriel" Subject: [PATCH 2/7] brcmfmac: add separate function for passing bus tx overhead Date: Wed, 6 Nov 2013 23:07:17 +0100 Message-ID: <1383775642-647-3-git-send-email-arend@broadcom.com> (sfid-20131106_230749_378874_8FA63D5A) In-Reply-To: <1383775642-647-1-git-send-email-arend@broadcom.com> References: <1383775642-647-1-git-send-email-arend@broadcom.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: The common driver needs the packet overhead for the bus in order to reserve headroom for sk_buffs. For the SDIO driver this depends on firmware features so it is not possible to provide it in the brcmf_attach() call. Reviewed-by: Franky Lin Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel --- drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h | 3 ++- drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c | 14 ++++++++++++-- drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c | 4 +++- drivers/net/wireless/brcm80211/brcmfmac/usb.c | 4 ++-- 4 files changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h index 7640d8a..392fc28 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h @@ -139,7 +139,7 @@ extern bool brcmf_c_prec_enq(struct device *dev, struct pktq *q, extern void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp); /* Indication from bus module regarding presence/insertion of dongle. */ -extern int brcmf_attach(uint bus_hdrlen, struct device *dev); +extern int brcmf_attach(struct device *dev); /* Indication from bus module regarding removal/absence of dongle */ extern void brcmf_detach(struct device *dev); /* Indication from bus module that dongle should be reset */ @@ -152,6 +152,7 @@ extern void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success); extern int brcmf_bus_start(struct device *dev); +extern void brcmf_bus_add_txhdrlen(struct device *dev, uint len); #ifdef CONFIG_BRCMFMAC_SDIO extern void brcmf_sdio_exit(void); diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index 64e9cff..0c4c230 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -1016,7 +1016,7 @@ void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) } } -int brcmf_attach(uint bus_hdrlen, struct device *dev) +int brcmf_attach(struct device *dev) { struct brcmf_pub *drvr = NULL; int ret = 0; @@ -1031,7 +1031,7 @@ int brcmf_attach(uint bus_hdrlen, struct device *dev) mutex_init(&drvr->proto_block); /* Link to bus module */ - drvr->hdrlen = bus_hdrlen; + drvr->hdrlen = 0; drvr->bus_if = dev_get_drvdata(dev); drvr->bus_if->drvr = drvr; @@ -1138,6 +1138,16 @@ fail: return 0; } +void brcmf_bus_add_txhdrlen(struct device *dev, uint len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + if (drvr) { + drvr->hdrlen += len; + } +} + static void brcmf_bus_detach(struct brcmf_pub *drvr) { brcmf_dbg(TRACE, "Enter\n"); diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c index b02953c..928983b 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c @@ -3983,7 +3983,7 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev) bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; /* Attach to the common layer, reserve hdr space */ - ret = brcmf_attach(bus->tx_hdrlen, bus->sdiodev->dev); + ret = brcmf_attach(bus->sdiodev->dev); if (ret != 0) { brcmf_err("brcmf_attach failed\n"); goto fail; @@ -4027,6 +4027,8 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev) list_add(&dlst->list, &bus->sdiodev->bus_if->dcmd_list); } + brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen); + /* if firmware path present try to download and bring up bus */ ret = brcmf_bus_start(bus->sdiodev->dev); if (ret != 0) { diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c index 422f44c..51c4de0 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -1255,7 +1255,7 @@ static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) bus->chiprev = bus_pub->chiprev; /* Attach to the common driver interface */ - ret = brcmf_attach(0, dev); + ret = brcmf_attach(dev); if (ret) { brcmf_err("brcmf_attach failed\n"); goto fail; @@ -1454,7 +1454,7 @@ static int brcmf_usb_resume(struct usb_interface *intf) struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); brcmf_dbg(USB, "Enter\n"); - if (!brcmf_attach(0, devinfo->dev)) + if (!brcmf_attach(devinfo->dev)) return brcmf_bus_start(&usb->dev); return 0; -- 1.8.1.3