From: Vladimir Kondratiev Date: Tue, 27 May 2014 11:45:44 +0000 (+0300) Subject: wil6210: limit MTU X-Git-Tag: v3.16-rc1~27^2~99^2^2~18 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d87bac1b26e81192d7264a73ea11324be80b493c;p=~emulex%2Finfiniband.git wil6210: limit MTU Obey 802.11 spec that defines max. data size 7920 bytes Signed-off-by: Vladimir Kondratiev Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/wil6210/netdev.c b/drivers/net/wireless/ath/wil6210/netdev.c index fdcaeb820e7..106b6dcb773 100644 --- a/drivers/net/wireless/ath/wil6210/netdev.c +++ b/drivers/net/wireless/ath/wil6210/netdev.c @@ -32,12 +32,26 @@ 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 > IEEE80211_MAX_DATA_LEN_DMG) + return -EINVAL; + + wil_dbg_misc(wil, "change MTU %d -> %d\n", ndev->mtu, new_mtu); + ndev->mtu = new_mtu; + + return 0; +} + static const struct net_device_ops wil_netdev_ops = { .ndo_open = wil_open, .ndo_stop = wil_stop, .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, }; static int wil6210_netdev_poll_rx(struct napi_struct *napi, int budget)