From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]:47072 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933143AbcJSCdn (ORCPT ); Tue, 18 Oct 2016 22:33:43 -0400 From: Jarod Wilson To: linux-kernel@vger.kernel.org Cc: Jarod Wilson , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Maya Erez , Simon Kelley , Stanislav Yakovlev Subject: [PATCH net-next 2/6] net: use core MTU range checking in wireless drivers Date: Tue, 18 Oct 2016 22:33:29 -0400 Message-Id: <20161019023333.15760-3-jarod@redhat.com> (sfid-20161019_043512_692157_D515CD3E) In-Reply-To: <20161019023333.15760-1-jarod@redhat.com> References: <20161019023333.15760-1-jarod@redhat.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: - set max_mtu in wil6210 driver - set max_mtu in atmel driver - set min/max_mtu in cisco airo driver, remove airo_change_mtu - set min/max_mtu in ipw2100/ipw2200 drivers, remove libipw_change_mtu - set min/max_mtu in p80211netdev, remove wlan_change_mtu CC: netdev@vger.kernel.org CC: linux-wireless@vger.kernel.org CC: Maya Erez CC: Simon Kelley CC: Stanislav Yakovlev Signed-off-by: Jarod Wilson --- drivers/net/wireless/ath/wil6210/netdev.c | 17 +---------------- drivers/net/wireless/atmel/atmel.c | 13 ++++--------- drivers/net/wireless/cisco/airo.c | 14 +++----------- drivers/net/wireless/intel/ipw2x00/ipw2100.c | 3 ++- drivers/net/wireless/intel/ipw2x00/ipw2200.c | 8 ++++++-- drivers/net/wireless/intel/ipw2x00/libipw.h | 1 - drivers/net/wireless/intel/ipw2x00/libipw_module.c | 9 --------- drivers/staging/wlan-ng/p80211netdev.c | 18 +++++------------- 8 files changed, 21 insertions(+), 62 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/netdev.c b/drivers/net/wireless/ath/wil6210/netdev.c index 61de5e9..d18372c 100644 --- a/drivers/net/wireless/ath/wil6210/netdev.c +++ b/drivers/net/wireless/ath/wil6210/netdev.c @@ -41,21 +41,6 @@ static int wil_stop(struct net_device *ndev) return wil_down(wil); } -static int wil_change_mtu(struct net_device *ndev, int new_mtu) -{ - struct wil6210_priv *wil = ndev_to_wil(ndev); - - if (new_mtu < 68 || new_mtu > mtu_max) { - wil_err(wil, "invalid MTU %d\n", new_mtu); - return -EINVAL; - } - - wil_dbg_misc(wil, "change MTU %d -> %d\n", ndev->mtu, new_mtu); - ndev->mtu = new_mtu; - - return 0; -} - static int wil_do_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) { struct wil6210_priv *wil = ndev_to_wil(ndev); @@ -69,7 +54,6 @@ static const struct net_device_ops wil_netdev_ops = { .ndo_start_xmit = wil_start_xmit, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, - .ndo_change_mtu = wil_change_mtu, .ndo_do_ioctl = wil_do_ioctl, }; @@ -126,6 +110,7 @@ static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget) static void wil_dev_setup(struct net_device *dev) { ether_setup(dev); + dev->max_mtu = mtu_max; dev->tx_queue_len = WIL_TX_Q_LEN_DEFAULT; } diff --git a/drivers/net/wireless/atmel/atmel.c b/drivers/net/wireless/atmel/atmel.c index bf2e9a0..eb92d5a 100644 --- a/drivers/net/wireless/atmel/atmel.c +++ b/drivers/net/wireless/atmel/atmel.c @@ -1295,14 +1295,6 @@ static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev) return &priv->wstats; } -static int atmel_change_mtu(struct net_device *dev, int new_mtu) -{ - if ((new_mtu < 68) || (new_mtu > 2312)) - return -EINVAL; - dev->mtu = new_mtu; - return 0; -} - static int atmel_set_mac_address(struct net_device *dev, void *p) { struct sockaddr *addr = p; @@ -1506,7 +1498,6 @@ static const struct file_operations atmel_proc_fops = { static const struct net_device_ops atmel_netdev_ops = { .ndo_open = atmel_open, .ndo_stop = atmel_close, - .ndo_change_mtu = atmel_change_mtu, .ndo_set_mac_address = atmel_set_mac_address, .ndo_start_xmit = start_tx, .ndo_do_ioctl = atmel_ioctl, @@ -1600,6 +1591,10 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port, dev->irq = irq; dev->base_addr = port; + /* MTU range: 68 - 2312 */ + dev->min_mtu = 68; + dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN; + SET_NETDEV_DEV(dev, sys_dev); if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) { diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c index 69b826d..4b04045 100644 --- a/drivers/net/wireless/cisco/airo.c +++ b/drivers/net/wireless/cisco/airo.c @@ -2329,14 +2329,6 @@ static int airo_set_mac_address(struct net_device *dev, void *p) return 0; } -static int airo_change_mtu(struct net_device *dev, int new_mtu) -{ - if ((new_mtu < 68) || (new_mtu > 2400)) - return -EINVAL; - dev->mtu = new_mtu; - return 0; -} - static LIST_HEAD(airo_devices); static void add_airo_dev(struct airo_info *ai) @@ -2656,7 +2648,6 @@ static const struct net_device_ops airo11_netdev_ops = { .ndo_get_stats = airo_get_stats, .ndo_set_mac_address = airo_set_mac_address, .ndo_do_ioctl = airo_ioctl, - .ndo_change_mtu = airo_change_mtu, }; static void wifi_setup(struct net_device *dev) @@ -2668,6 +2659,8 @@ static void wifi_setup(struct net_device *dev) dev->type = ARPHRD_IEEE80211; dev->hard_header_len = ETH_HLEN; dev->mtu = AIRO_DEF_MTU; + dev->min_mtu = 68; + dev->max_mtu = MIC_MSGLEN_MAX; dev->addr_len = ETH_ALEN; dev->tx_queue_len = 100; @@ -2754,7 +2747,6 @@ static const struct net_device_ops airo_netdev_ops = { .ndo_set_rx_mode = airo_set_multicast_list, .ndo_set_mac_address = airo_set_mac_address, .ndo_do_ioctl = airo_ioctl, - .ndo_change_mtu = airo_change_mtu, .ndo_validate_addr = eth_validate_addr, }; @@ -2766,7 +2758,6 @@ static const struct net_device_ops mpi_netdev_ops = { .ndo_set_rx_mode = airo_set_multicast_list, .ndo_set_mac_address = airo_set_mac_address, .ndo_do_ioctl = airo_ioctl, - .ndo_change_mtu = airo_change_mtu, .ndo_validate_addr = eth_validate_addr, }; @@ -2822,6 +2813,7 @@ static struct net_device *_init_airo_card( unsigned short irq, int port, dev->irq = irq; dev->base_addr = port; dev->priv_flags &= ~IFF_TX_SKB_SHARING; + dev->max_mtu = MIC_MSGLEN_MAX; SET_NETDEV_DEV(dev, dmdev); diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c index bfa542c..6417609 100644 --- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c +++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c @@ -6035,7 +6035,6 @@ static const struct net_device_ops ipw2100_netdev_ops = { .ndo_open = ipw2100_open, .ndo_stop = ipw2100_close, .ndo_start_xmit = libipw_xmit, - .ndo_change_mtu = libipw_change_mtu, .ndo_tx_timeout = ipw2100_tx_timeout, .ndo_set_mac_address = ipw2100_set_address, .ndo_validate_addr = eth_validate_addr, @@ -6071,6 +6070,8 @@ static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev, dev->wireless_data = &priv->wireless_data; dev->watchdog_timeo = 3 * HZ; dev->irq = 0; + dev->min_mtu = 68; + dev->max_mtu = LIBIPW_DATA_LEN; /* NOTE: We don't use the wireless_handlers hook * in dev as the system will start throwing WX requests diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2200.c b/drivers/net/wireless/intel/ipw2x00/ipw2200.c index bfd6861..ef9af8a 100644 --- a/drivers/net/wireless/intel/ipw2x00/ipw2200.c +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c @@ -11561,7 +11561,6 @@ static const struct net_device_ops ipw_prom_netdev_ops = { .ndo_open = ipw_prom_open, .ndo_stop = ipw_prom_stop, .ndo_start_xmit = ipw_prom_hard_start_xmit, - .ndo_change_mtu = libipw_change_mtu, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; @@ -11587,6 +11586,9 @@ static int ipw_prom_alloc(struct ipw_priv *priv) priv->prom_net_dev->type = ARPHRD_IEEE80211_RADIOTAP; priv->prom_net_dev->netdev_ops = &ipw_prom_netdev_ops; + priv->prom_net_dev->min_mtu = 68; + priv->prom_net_dev->max_mtu = LIBIPW_DATA_LEN; + priv->prom_priv->ieee->iw_mode = IW_MODE_MONITOR; SET_NETDEV_DEV(priv->prom_net_dev, &priv->pci_dev->dev); @@ -11619,7 +11621,6 @@ static const struct net_device_ops ipw_netdev_ops = { .ndo_set_rx_mode = ipw_net_set_multicast_list, .ndo_set_mac_address = ipw_net_set_mac_address, .ndo_start_xmit = libipw_xmit, - .ndo_change_mtu = libipw_change_mtu, .ndo_validate_addr = eth_validate_addr, }; @@ -11729,6 +11730,9 @@ static int ipw_pci_probe(struct pci_dev *pdev, net_dev->wireless_handlers = &ipw_wx_handler_def; net_dev->ethtool_ops = &ipw_ethtool_ops; + net_dev->min_mtu = 68; + net_dev->max_mtu = LIBIPW_DATA_LEN; + err = sysfs_create_group(&pdev->dev.kobj, &ipw_attribute_group); if (err) { IPW_ERROR("failed to create sysfs device attributes\n"); diff --git a/drivers/net/wireless/intel/ipw2x00/libipw.h b/drivers/net/wireless/intel/ipw2x00/libipw.h index b057161..b513551 100644 --- a/drivers/net/wireless/intel/ipw2x00/libipw.h +++ b/drivers/net/wireless/intel/ipw2x00/libipw.h @@ -948,7 +948,6 @@ static inline int libipw_is_cck_rate(u8 rate) /* libipw.c */ void free_libipw(struct net_device *dev, int monitor); struct net_device *alloc_libipw(int sizeof_priv, int monitor); -int libipw_change_mtu(struct net_device *dev, int new_mtu); void libipw_networks_age(struct libipw_device *ieee, unsigned long age_secs); diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_module.c b/drivers/net/wireless/intel/ipw2x00/libipw_module.c index 60f2874..2332075 100644 --- a/drivers/net/wireless/intel/ipw2x00/libipw_module.c +++ b/drivers/net/wireless/intel/ipw2x00/libipw_module.c @@ -118,15 +118,6 @@ static void libipw_networks_initialize(struct libipw_device *ieee) &ieee->network_free_list); } -int libipw_change_mtu(struct net_device *dev, int new_mtu) -{ - if ((new_mtu < 68) || (new_mtu > LIBIPW_DATA_LEN)) - return -EINVAL; - dev->mtu = new_mtu; - return 0; -} -EXPORT_SYMBOL(libipw_change_mtu); - struct net_device *alloc_libipw(int sizeof_priv, int monitor) { struct libipw_device *ieee; diff --git a/drivers/staging/wlan-ng/p80211netdev.c b/drivers/staging/wlan-ng/p80211netdev.c index 825a63a..4762d38 100644 --- a/drivers/staging/wlan-ng/p80211netdev.c +++ b/drivers/staging/wlan-ng/p80211netdev.c @@ -669,18 +669,6 @@ static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr) return result; } -static int wlan_change_mtu(struct net_device *dev, int new_mtu) -{ - /* 2312 is max 802.11 payload, 20 is overhead, (ether + llc +snap) - and another 8 for wep. */ - if ((new_mtu < 68) || (new_mtu > (2312 - 20 - 8))) - return -EINVAL; - - dev->mtu = new_mtu; - - return 0; -} - static const struct net_device_ops p80211_netdev_ops = { .ndo_init = p80211knetdev_init, .ndo_open = p80211knetdev_open, @@ -690,7 +678,6 @@ static const struct net_device_ops p80211_netdev_ops = { .ndo_do_ioctl = p80211knetdev_do_ioctl, .ndo_set_mac_address = p80211knetdev_set_mac_address, .ndo_tx_timeout = p80211knetdev_tx_timeout, - .ndo_change_mtu = wlan_change_mtu, .ndo_validate_addr = eth_validate_addr, }; @@ -756,6 +743,11 @@ int wlan_setup(struct wlandevice *wlandev, struct device *physdev) wdev->wiphy = wiphy; wdev->iftype = NL80211_IFTYPE_STATION; netdev->ieee80211_ptr = wdev; + netdev->min_mtu = 68; + /* 2312 is max 802.11 payload, 20 is overhead, + * (ether + llc + snap) and another 8 for wep. + */ + netdev->max_mtu = (2312 - 20 - 8); netif_stop_queue(netdev); netif_carrier_off(netdev); -- 2.10.0