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https://github.com/torvalds/linux
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9f38f28624
For supporting multiple virtual interfaces in the future, introduce a wil6210_vif structure which will hold per-VIF data. Change the module initialization so wil6210_vif will be part of net_device structure, and wireless_dev will be embedded inside the wil6210_vif structure. This will allow us to find the appropriate wil6210_vif structure when we only have access to wireless_dev or net_device. Signed-off-by: Lior David <liord@codeaurora.org> Signed-off-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
272 lines
6 KiB
C
272 lines
6 KiB
C
/*
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* Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
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* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/etherdevice.h>
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#include "wil6210.h"
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#include "txrx.h"
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static int wil_open(struct net_device *ndev)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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int rc;
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wil_dbg_misc(wil, "open\n");
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if (debug_fw ||
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test_bit(WMI_FW_CAPABILITY_WMI_ONLY, wil->fw_capabilities)) {
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wil_err(wil, "while in debug_fw or wmi_only mode\n");
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return -EINVAL;
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}
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rc = wil_pm_runtime_get(wil);
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if (rc < 0)
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return rc;
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rc = wil_up(wil);
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if (rc)
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wil_pm_runtime_put(wil);
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return rc;
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}
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static int wil_stop(struct net_device *ndev)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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int rc;
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wil_dbg_misc(wil, "stop\n");
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rc = wil_down(wil);
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if (!rc)
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wil_pm_runtime_put(wil);
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return rc;
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}
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static const struct net_device_ops wil_netdev_ops = {
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.ndo_open = wil_open,
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.ndo_stop = wil_stop,
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.ndo_start_xmit = wil_start_xmit,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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};
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static int wil6210_netdev_poll_rx(struct napi_struct *napi, int budget)
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{
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struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
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napi_rx);
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int quota = budget;
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int done;
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wil_rx_handle(wil, "a);
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done = budget - quota;
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if (done < budget) {
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napi_complete_done(napi, done);
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wil6210_unmask_irq_rx(wil);
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wil_dbg_txrx(wil, "NAPI RX complete\n");
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}
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wil_dbg_txrx(wil, "NAPI RX poll(%d) done %d\n", budget, done);
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return done;
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}
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static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget)
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{
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struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
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napi_tx);
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int tx_done = 0;
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uint i;
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/* always process ALL Tx complete, regardless budget - it is fast */
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for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
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struct vring *vring = &wil->vring_tx[i];
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struct vring_tx_data *txdata = &wil->vring_tx_data[i];
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if (!vring->va || !txdata->enabled)
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continue;
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tx_done += wil_tx_complete(wil, i);
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}
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if (tx_done < budget) {
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napi_complete(napi);
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wil6210_unmask_irq_tx(wil);
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wil_dbg_txrx(wil, "NAPI TX complete\n");
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}
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wil_dbg_txrx(wil, "NAPI TX poll(%d) done %d\n", budget, tx_done);
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return min(tx_done, budget);
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}
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static void wil_dev_setup(struct net_device *dev)
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{
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ether_setup(dev);
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dev->max_mtu = mtu_max;
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dev->tx_queue_len = WIL_TX_Q_LEN_DEFAULT;
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}
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struct wil6210_vif *
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wil_vif_alloc(struct wil6210_priv *wil, const char *name,
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unsigned char name_assign_type, enum nl80211_iftype iftype,
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u8 mid)
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{
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struct net_device *ndev;
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struct wireless_dev *wdev;
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struct wil6210_vif *vif;
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ndev = alloc_netdev(sizeof(*vif), name, name_assign_type,
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wil_dev_setup);
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if (!ndev) {
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dev_err(wil_to_dev(wil), "alloc_netdev failed\n");
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return ERR_PTR(-ENOMEM);
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}
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if (mid == 0)
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wil->ndev = ndev;
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vif = ndev_to_vif(ndev);
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vif->wil = wil;
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vif->mid = mid;
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wdev = &vif->wdev;
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wdev->wiphy = wil->wiphy;
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wdev->iftype = iftype;
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ndev->netdev_ops = &wil_netdev_ops;
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wil_set_ethtoolops(ndev);
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ndev->ieee80211_ptr = wdev;
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ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
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NETIF_F_SG | NETIF_F_GRO |
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NETIF_F_TSO | NETIF_F_TSO6 |
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NETIF_F_RXHASH;
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ndev->features |= ndev->hw_features;
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SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
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wdev->netdev = ndev;
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return vif;
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}
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void *wil_if_alloc(struct device *dev)
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{
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struct wireless_dev *wdev;
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struct wil6210_priv *wil;
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struct wil6210_vif *vif;
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int rc = 0;
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wil = wil_cfg80211_init(dev);
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if (IS_ERR(wil)) {
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dev_err(dev, "wil_cfg80211_init failed\n");
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return wil;
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}
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rc = wil_priv_init(wil);
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if (rc) {
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dev_err(dev, "wil_priv_init failed\n");
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goto out_cfg;
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}
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wil_dbg_misc(wil, "if_alloc\n");
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vif = wil_vif_alloc(wil, "wlan%d", NET_NAME_UNKNOWN,
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NL80211_IFTYPE_STATION, 0);
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if (IS_ERR(vif)) {
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dev_err(dev, "wil_vif_alloc failed\n");
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rc = -ENOMEM;
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goto out_priv;
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}
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wdev = &vif->wdev;
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wil->wdev = wdev;
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wil->radio_wdev = wdev;
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return wil;
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out_priv:
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wil_priv_deinit(wil);
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out_cfg:
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wil_cfg80211_deinit(wil);
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return ERR_PTR(rc);
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}
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void wil_if_free(struct wil6210_priv *wil)
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{
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struct net_device *ndev = wil_to_ndev(wil);
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wil_dbg_misc(wil, "if_free\n");
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if (!ndev)
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return;
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wil_priv_deinit(wil);
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wil_to_ndev(wil) = NULL;
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free_netdev(ndev);
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wil_cfg80211_deinit(wil);
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}
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int wil_if_add(struct wil6210_priv *wil)
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{
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struct wireless_dev *wdev = wil_to_wdev(wil);
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struct wiphy *wiphy = wil->wiphy;
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struct net_device *ndev = wil_to_ndev(wil);
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int rc;
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wil_dbg_misc(wil, "entered");
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strlcpy(wiphy->fw_version, wil->fw_version, sizeof(wiphy->fw_version));
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rc = wiphy_register(wiphy);
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if (rc < 0) {
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wil_err(wil, "failed to register wiphy, err %d\n", rc);
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return rc;
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}
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netif_napi_add(ndev, &wil->napi_rx, wil6210_netdev_poll_rx,
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WIL6210_NAPI_BUDGET);
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netif_tx_napi_add(ndev, &wil->napi_tx, wil6210_netdev_poll_tx,
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WIL6210_NAPI_BUDGET);
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wil_update_net_queues_bh(wil, NULL, true);
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rc = register_netdev(ndev);
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if (rc < 0) {
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dev_err(&ndev->dev, "Failed to register netdev: %d\n", rc);
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goto out_wiphy;
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}
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return 0;
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out_wiphy:
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wiphy_unregister(wdev->wiphy);
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return rc;
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}
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void wil_if_remove(struct wil6210_priv *wil)
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{
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struct net_device *ndev = wil_to_ndev(wil);
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struct wireless_dev *wdev = wil_to_wdev(wil);
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wil_dbg_misc(wil, "if_remove\n");
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unregister_netdev(ndev);
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wiphy_unregister(wdev->wiphy);
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}
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