From patchwork Mon Oct 17 20:33:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009587 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56FB9C433FE for ; Mon, 17 Oct 2022 20:37:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230261AbiJQUhL (ORCPT ); Mon, 17 Oct 2022 16:37:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230407AbiJQUg1 (ORCPT ); Mon, 17 Oct 2022 16:36:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B02F61B13; Mon, 17 Oct 2022 13:34:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 4B99CB81A76; Mon, 17 Oct 2022 20:33:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B2DA3C433C1; Mon, 17 Oct 2022 20:33:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038791; bh=MccqlVPC0WKRXb6nDQ8Cj+Jx/2SVq2lJw2hIz+6Pjkk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AfGXcB9gtAA2Xes6rDhGTo4q1Uw1tXwTpsYm3Jxo+EdTzn/1m+ljog3cLWmdqnxXD TwUfLCnmENdWZP+yzY7yscPlf80l/YInkdCQlYWutjOG1YcDfH/9sqOmiftqds/fbg qLo7Z+2TVMrkr1Qn5bcZOxLGZO59PvJnGAzKc/ZQUpKeB7SEJE6WH0lLbAK7Kz0JyN rF3hnAEZy205qJgeviSfr80hsWLz/rBDxk0nv5ThWZUsrAT+3jSoCNHyr+QRNDTZm8 VcfFMPgU2/XJQs0gAG2buKxrMjvJW+MyzxvG9MbiMahmo+6AeEiQ99SxCEhZf29m90 SmXA/vW8vFKiA== Date: Mon, 17 Oct 2022 15:33:01 -0500 From: "Gustavo A. R. Silva" To: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 1/6][next] orinoco: Avoid clashing function prototypes Message-ID: <2387e02ae7f31388f24041cae8d02d5e12151708.1666038048.git.gustavoars@kernel.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org When built with Control Flow Integrity, function prototypes between caller and function declaration must match. These mismatches are visible at compile time with the new -Wcast-function-type-strict in Clang[1]. Fix a total of 53 warnings like these: drivers/net/wireless/intersil/orinoco/wext.c:1379:27: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_param *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict] IW_HANDLER(SIOCGIWPOWER, (iw_handler)orinoco_ioctl_getpower), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../net/wireless/wext-compat.c:1607:33: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_point *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict] [IW_IOCTL_IDX(SIOCSIWGENIE)] = (iw_handler) cfg80211_wext_siwgenie, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The orinoco Wireless Extension handler callbacks (iw_handler) use a union for the data argument. Actually use the union and perform explicit member selection in the function body instead of having a function prototype mismatch. No significant binary differences were seen before/after changes. Link: https://github.com/KSPP/linux/issues/234 Link: https://reviews.llvm.org/D134831 [1] Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/intersil/orinoco/wext.c | 109 +++++++++++-------- 1 file changed, 62 insertions(+), 47 deletions(-) diff --git a/drivers/net/wireless/intersil/orinoco/wext.c b/drivers/net/wireless/intersil/orinoco/wext.c index 4a01260027bc..b8eb5d60192f 100644 --- a/drivers/net/wireless/intersil/orinoco/wext.c +++ b/drivers/net/wireless/intersil/orinoco/wext.c @@ -154,9 +154,10 @@ static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev) static int orinoco_ioctl_setwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct orinoco_private *priv = ndev_priv(dev); int err = -EINPROGRESS; /* Call commit handler */ unsigned long flags; @@ -213,9 +214,10 @@ static int orinoco_ioctl_setwap(struct net_device *dev, static int orinoco_ioctl_getwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct orinoco_private *priv = ndev_priv(dev); int err = 0; @@ -234,9 +236,10 @@ static int orinoco_ioctl_getwap(struct net_device *dev, static int orinoco_ioctl_setiwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, + union iwreq_data *wrqu, char *keybuf) { + struct iw_point *erq = &wrqu->encoding; struct orinoco_private *priv = ndev_priv(dev); int index = (erq->flags & IW_ENCODE_INDEX) - 1; int setindex = priv->tx_key; @@ -325,9 +328,10 @@ static int orinoco_ioctl_setiwencode(struct net_device *dev, static int orinoco_ioctl_getiwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, + union iwreq_data *wrqu, char *keybuf) { + struct iw_point *erq = &wrqu->encoding; struct orinoco_private *priv = ndev_priv(dev); int index = (erq->flags & IW_ENCODE_INDEX) - 1; unsigned long flags; @@ -361,9 +365,10 @@ static int orinoco_ioctl_getiwencode(struct net_device *dev, static int orinoco_ioctl_setessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, + union iwreq_data *wrqu, char *essidbuf) { + struct iw_point *erq = &wrqu->essid; struct orinoco_private *priv = ndev_priv(dev); unsigned long flags; @@ -392,9 +397,10 @@ static int orinoco_ioctl_setessid(struct net_device *dev, static int orinoco_ioctl_getessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, + union iwreq_data *wrqu, char *essidbuf) { + struct iw_point *erq = &wrqu->essid; struct orinoco_private *priv = ndev_priv(dev); int active; int err = 0; @@ -420,9 +426,10 @@ static int orinoco_ioctl_getessid(struct net_device *dev, static int orinoco_ioctl_setfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *frq, + union iwreq_data *wrqu, char *extra) { + struct iw_freq *frq = &wrqu->freq; struct orinoco_private *priv = ndev_priv(dev); int chan = -1; unsigned long flags; @@ -469,9 +476,10 @@ static int orinoco_ioctl_setfreq(struct net_device *dev, static int orinoco_ioctl_getfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *frq, + union iwreq_data *wrqu, char *extra) { + struct iw_freq *frq = &wrqu->freq; struct orinoco_private *priv = ndev_priv(dev); int tmp; @@ -488,9 +496,10 @@ static int orinoco_ioctl_getfreq(struct net_device *dev, static int orinoco_ioctl_getsens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *srq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *srq = &wrqu->sens; struct orinoco_private *priv = ndev_priv(dev); struct hermes *hw = &priv->hw; u16 val; @@ -517,9 +526,10 @@ static int orinoco_ioctl_getsens(struct net_device *dev, static int orinoco_ioctl_setsens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *srq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *srq = &wrqu->sens; struct orinoco_private *priv = ndev_priv(dev); int val = srq->value; unsigned long flags; @@ -540,9 +550,10 @@ static int orinoco_ioctl_setsens(struct net_device *dev, static int orinoco_ioctl_setrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; struct orinoco_private *priv = ndev_priv(dev); int ratemode; int bitrate; /* 100s of kilobits */ @@ -574,9 +585,10 @@ static int orinoco_ioctl_setrate(struct net_device *dev, static int orinoco_ioctl_getrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; struct orinoco_private *priv = ndev_priv(dev); int err = 0; int bitrate, automatic; @@ -610,9 +622,10 @@ static int orinoco_ioctl_getrate(struct net_device *dev, static int orinoco_ioctl_setpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *prq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *prq = &wrqu->power; struct orinoco_private *priv = ndev_priv(dev); int err = -EINPROGRESS; /* Call commit handler */ unsigned long flags; @@ -664,9 +677,10 @@ static int orinoco_ioctl_setpower(struct net_device *dev, static int orinoco_ioctl_getpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *prq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *prq = &wrqu->power; struct orinoco_private *priv = ndev_priv(dev); struct hermes *hw = &priv->hw; int err = 0; @@ -1097,7 +1111,7 @@ static int orinoco_ioctl_set_mlme(struct net_device *dev, static int orinoco_ioctl_reset(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1121,7 +1135,7 @@ static int orinoco_ioctl_reset(struct net_device *dev, static int orinoco_ioctl_setibssport(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { @@ -1143,7 +1157,7 @@ static int orinoco_ioctl_setibssport(struct net_device *dev, static int orinoco_ioctl_getibssport(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1155,7 +1169,7 @@ static int orinoco_ioctl_getibssport(struct net_device *dev, static int orinoco_ioctl_setport3(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1201,7 +1215,7 @@ static int orinoco_ioctl_setport3(struct net_device *dev, static int orinoco_ioctl_getport3(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1213,7 +1227,7 @@ static int orinoco_ioctl_getport3(struct net_device *dev, static int orinoco_ioctl_setpreamble(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1245,7 +1259,7 @@ static int orinoco_ioctl_setpreamble(struct net_device *dev, static int orinoco_ioctl_getpreamble(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1265,9 +1279,10 @@ static int orinoco_ioctl_getpreamble(struct net_device *dev, * For Wireless Tools 25 and 26 append "dummy" are the end. */ static int orinoco_ioctl_getrid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct orinoco_private *priv = ndev_priv(dev); struct hermes *hw = &priv->hw; int rid = data->flags; @@ -1303,7 +1318,7 @@ static int orinoco_ioctl_getrid(struct net_device *dev, /* Commit handler, called after set operations */ static int orinoco_ioctl_commit(struct net_device *dev, struct iw_request_info *info, - void *wrqu, + union iwreq_data *wrqu, char *extra) { struct orinoco_private *priv = ndev_priv(dev); @@ -1347,36 +1362,36 @@ static const struct iw_priv_args orinoco_privtab[] = { */ static const iw_handler orinoco_handler[] = { - IW_HANDLER(SIOCSIWCOMMIT, (iw_handler)orinoco_ioctl_commit), + IW_HANDLER(SIOCSIWCOMMIT, orinoco_ioctl_commit), IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname), - IW_HANDLER(SIOCSIWFREQ, (iw_handler)orinoco_ioctl_setfreq), - IW_HANDLER(SIOCGIWFREQ, (iw_handler)orinoco_ioctl_getfreq), + IW_HANDLER(SIOCSIWFREQ, orinoco_ioctl_setfreq), + IW_HANDLER(SIOCGIWFREQ, orinoco_ioctl_getfreq), IW_HANDLER(SIOCSIWMODE, (iw_handler)cfg80211_wext_siwmode), IW_HANDLER(SIOCGIWMODE, (iw_handler)cfg80211_wext_giwmode), - IW_HANDLER(SIOCSIWSENS, (iw_handler)orinoco_ioctl_setsens), - IW_HANDLER(SIOCGIWSENS, (iw_handler)orinoco_ioctl_getsens), + IW_HANDLER(SIOCSIWSENS, orinoco_ioctl_setsens), + IW_HANDLER(SIOCGIWSENS, orinoco_ioctl_getsens), IW_HANDLER(SIOCGIWRANGE, (iw_handler)cfg80211_wext_giwrange), IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy), IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy), IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy), IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy), - IW_HANDLER(SIOCSIWAP, (iw_handler)orinoco_ioctl_setwap), - IW_HANDLER(SIOCGIWAP, (iw_handler)orinoco_ioctl_getwap), + IW_HANDLER(SIOCSIWAP, orinoco_ioctl_setwap), + IW_HANDLER(SIOCGIWAP, orinoco_ioctl_getwap), IW_HANDLER(SIOCSIWSCAN, (iw_handler)cfg80211_wext_siwscan), IW_HANDLER(SIOCGIWSCAN, (iw_handler)cfg80211_wext_giwscan), - IW_HANDLER(SIOCSIWESSID, (iw_handler)orinoco_ioctl_setessid), - IW_HANDLER(SIOCGIWESSID, (iw_handler)orinoco_ioctl_getessid), - IW_HANDLER(SIOCSIWRATE, (iw_handler)orinoco_ioctl_setrate), - IW_HANDLER(SIOCGIWRATE, (iw_handler)orinoco_ioctl_getrate), + IW_HANDLER(SIOCSIWESSID, orinoco_ioctl_setessid), + IW_HANDLER(SIOCGIWESSID, orinoco_ioctl_getessid), + IW_HANDLER(SIOCSIWRATE, orinoco_ioctl_setrate), + IW_HANDLER(SIOCGIWRATE, orinoco_ioctl_getrate), IW_HANDLER(SIOCSIWRTS, (iw_handler)cfg80211_wext_siwrts), IW_HANDLER(SIOCGIWRTS, (iw_handler)cfg80211_wext_giwrts), IW_HANDLER(SIOCSIWFRAG, (iw_handler)cfg80211_wext_siwfrag), IW_HANDLER(SIOCGIWFRAG, (iw_handler)cfg80211_wext_giwfrag), IW_HANDLER(SIOCGIWRETRY, (iw_handler)cfg80211_wext_giwretry), - IW_HANDLER(SIOCSIWENCODE, (iw_handler)orinoco_ioctl_setiwencode), - IW_HANDLER(SIOCGIWENCODE, (iw_handler)orinoco_ioctl_getiwencode), - IW_HANDLER(SIOCSIWPOWER, (iw_handler)orinoco_ioctl_setpower), - IW_HANDLER(SIOCGIWPOWER, (iw_handler)orinoco_ioctl_getpower), + IW_HANDLER(SIOCSIWENCODE, orinoco_ioctl_setiwencode), + IW_HANDLER(SIOCGIWENCODE, orinoco_ioctl_getiwencode), + IW_HANDLER(SIOCSIWPOWER, orinoco_ioctl_setpower), + IW_HANDLER(SIOCGIWPOWER, orinoco_ioctl_getpower), IW_HANDLER(SIOCSIWGENIE, orinoco_ioctl_set_genie), IW_HANDLER(SIOCGIWGENIE, orinoco_ioctl_get_genie), IW_HANDLER(SIOCSIWMLME, orinoco_ioctl_set_mlme), @@ -1391,15 +1406,15 @@ static const iw_handler orinoco_handler[] = { Added typecasting since we no longer use iwreq_data -- Moustafa */ static const iw_handler orinoco_private_handler[] = { - [0] = (iw_handler)orinoco_ioctl_reset, - [1] = (iw_handler)orinoco_ioctl_reset, - [2] = (iw_handler)orinoco_ioctl_setport3, - [3] = (iw_handler)orinoco_ioctl_getport3, - [4] = (iw_handler)orinoco_ioctl_setpreamble, - [5] = (iw_handler)orinoco_ioctl_getpreamble, - [6] = (iw_handler)orinoco_ioctl_setibssport, - [7] = (iw_handler)orinoco_ioctl_getibssport, - [9] = (iw_handler)orinoco_ioctl_getrid, + [0] = orinoco_ioctl_reset, + [1] = orinoco_ioctl_reset, + [2] = orinoco_ioctl_setport3, + [3] = orinoco_ioctl_getport3, + [4] = orinoco_ioctl_setpreamble, + [5] = orinoco_ioctl_getpreamble, + [6] = orinoco_ioctl_setibssport, + [7] = orinoco_ioctl_getibssport, + [9] = orinoco_ioctl_getrid, }; const struct iw_handler_def orinoco_handler_def = { From patchwork Mon Oct 17 20:34:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009588 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 54F99C4332F for ; Mon, 17 Oct 2022 20:37:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231423AbiJQUhp (ORCPT ); Mon, 17 Oct 2022 16:37:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229828AbiJQUh1 (ORCPT ); Mon, 17 Oct 2022 16:37:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7918917E10; Mon, 17 Oct 2022 13:35:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E5209B81A74; Mon, 17 Oct 2022 20:34:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EBC96C433D6; Mon, 17 Oct 2022 20:34:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038872; bh=7UX6j6F5sTRryY4fCR8niC+hFX4BEghwSjN/DowAEA8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LQYy1qM583njaRFaF+9eHXScJMdIuCMaOoUxvBqhD3eSpdDLJj+JqI1zlh7NuBZbB vGF/2FDAdbL3rOBbomW98VYQxqSushZLquBjIMpb0HX8yj+fGcH3Xp4RHMnMtTvifG d30Ezk7ElEjDMitpzu1tl4uqqI/gLQSJf2ObuxxRfIsHk2y5KrvdHVX4/2JFf5uMBM dvPYY8YRit/POWWHEzrb/8pLgRjlT83j+D9AERYUPtfS0+PhZg4ih6ZPr0BYig9XS3 Em9kqBlm2cP7g+2GELW/q39lO32QB+1sSLS1vIrQDu1g+xTfYDYIeDza/7FZBPKudf PR1TS8gdEU3nw== Date: Mon, 17 Oct 2022 15:34:22 -0500 From: "Gustavo A. R. Silva" To: Johannes Berg , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 2/6][next] cfg80211: Avoid clashing function prototypes Message-ID: <291de76bc7cd5c21dc2f2471382ab0caaf625b22.1666038048.git.gustavoars@kernel.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org When built with Control Flow Integrity, function prototypes between caller and function declaration must match. These mismatches are visible at compile time with the new -Wcast-function-type-strict in Clang[1]. Fix a total of 10 warnings like these: ../drivers/net/wireless/intersil/orinoco/wext.c:1390:27: error: incompatible function pointer types initializing 'const iw_handler' (aka 'int (*const)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') with an expression of type 'int (struct net_device *, struct iw_request_info *, struct iw_param *, char *)' [-Wincompatible-function-pointer-types] IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), ^~~~~~~~~~~~~~~~~~~~~~ ../include/uapi/linux/wireless.h:357:23: note: expanded from macro 'IW_HANDLER' [IW_IOCTL_IDX(id)] = func The cfg80211 Wireless Extension handler callbacks (iw_handler) use a union for the data argument. Actually use the union and perform explicit member selection in the function body instead of having a function prototype mismatch. No significant binary differences were seen before/after changes. Link: https://github.com/KSPP/linux/issues/234 Link: https://reviews.llvm.org/D134831 [1] Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/intersil/orinoco/wext.c | 22 +-- include/net/cfg80211-wext.h | 20 +-- net/wireless/scan.c | 3 +- net/wireless/wext-compat.c | 180 +++++++++---------- net/wireless/wext-compat.h | 8 +- net/wireless/wext-sme.c | 5 +- 6 files changed, 112 insertions(+), 126 deletions(-) diff --git a/drivers/net/wireless/intersil/orinoco/wext.c b/drivers/net/wireless/intersil/orinoco/wext.c index b8eb5d60192f..dea1ff044342 100644 --- a/drivers/net/wireless/intersil/orinoco/wext.c +++ b/drivers/net/wireless/intersil/orinoco/wext.c @@ -1363,31 +1363,31 @@ static const struct iw_priv_args orinoco_privtab[] = { static const iw_handler orinoco_handler[] = { IW_HANDLER(SIOCSIWCOMMIT, orinoco_ioctl_commit), - IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname), + IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), IW_HANDLER(SIOCSIWFREQ, orinoco_ioctl_setfreq), IW_HANDLER(SIOCGIWFREQ, orinoco_ioctl_getfreq), - IW_HANDLER(SIOCSIWMODE, (iw_handler)cfg80211_wext_siwmode), - IW_HANDLER(SIOCGIWMODE, (iw_handler)cfg80211_wext_giwmode), + IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), + IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), IW_HANDLER(SIOCSIWSENS, orinoco_ioctl_setsens), IW_HANDLER(SIOCGIWSENS, orinoco_ioctl_getsens), - IW_HANDLER(SIOCGIWRANGE, (iw_handler)cfg80211_wext_giwrange), + IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy), IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy), IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy), IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy), IW_HANDLER(SIOCSIWAP, orinoco_ioctl_setwap), IW_HANDLER(SIOCGIWAP, orinoco_ioctl_getwap), - IW_HANDLER(SIOCSIWSCAN, (iw_handler)cfg80211_wext_siwscan), - IW_HANDLER(SIOCGIWSCAN, (iw_handler)cfg80211_wext_giwscan), + IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), + IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), IW_HANDLER(SIOCSIWESSID, orinoco_ioctl_setessid), IW_HANDLER(SIOCGIWESSID, orinoco_ioctl_getessid), IW_HANDLER(SIOCSIWRATE, orinoco_ioctl_setrate), IW_HANDLER(SIOCGIWRATE, orinoco_ioctl_getrate), - IW_HANDLER(SIOCSIWRTS, (iw_handler)cfg80211_wext_siwrts), - IW_HANDLER(SIOCGIWRTS, (iw_handler)cfg80211_wext_giwrts), - IW_HANDLER(SIOCSIWFRAG, (iw_handler)cfg80211_wext_siwfrag), - IW_HANDLER(SIOCGIWFRAG, (iw_handler)cfg80211_wext_giwfrag), - IW_HANDLER(SIOCGIWRETRY, (iw_handler)cfg80211_wext_giwretry), + IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), + IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), + IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), + IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), + IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), IW_HANDLER(SIOCSIWENCODE, orinoco_ioctl_setiwencode), IW_HANDLER(SIOCGIWENCODE, orinoco_ioctl_getiwencode), IW_HANDLER(SIOCSIWPOWER, orinoco_ioctl_setpower), diff --git a/include/net/cfg80211-wext.h b/include/net/cfg80211-wext.h index ad77caf2ffde..0ee36d97e068 100644 --- a/include/net/cfg80211-wext.h +++ b/include/net/cfg80211-wext.h @@ -19,34 +19,34 @@ */ int cfg80211_wext_giwname(struct net_device *dev, struct iw_request_info *info, - char *name, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, - u32 *mode, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, - u32 *mode, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_siwscan(struct net_device *dev, struct iw_request_info *info, union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwscan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwrange(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_siwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_siwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwretry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *retry, char *extra); + union iwreq_data *wrqu, char *extra); #endif /* __NET_CFG80211_WEXT_H */ diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 806a5f1330ff..853619bc0f1a 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -3229,8 +3229,9 @@ static int ieee80211_scan_results(struct cfg80211_registered_device *rdev, int cfg80211_wext_giwscan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct cfg80211_registered_device *rdev; int res; diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index ddf340bfa07a..b5274859ccfd 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -25,16 +25,17 @@ int cfg80211_wext_giwname(struct net_device *dev, struct iw_request_info *info, - char *name, char *extra) + union iwreq_data *wrqu, char *extra) { - strcpy(name, "IEEE 802.11"); + strcpy(wrqu->name, "IEEE 802.11"); return 0; } EXPORT_WEXT_HANDLER(cfg80211_wext_giwname); int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, - u32 *mode, char *extra) + union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev; struct vif_params vifparams; @@ -71,8 +72,9 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode); int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, - u32 *mode, char *extra) + union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct wireless_dev *wdev = dev->ieee80211_ptr; if (!wdev) @@ -108,8 +110,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode); int cfg80211_wext_giwrange(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct wireless_dev *wdev = dev->ieee80211_ptr; struct iw_range *range = (struct iw_range *) extra; enum nl80211_band band; @@ -251,8 +254,9 @@ int cfg80211_wext_freq(struct iw_freq *freq) int cfg80211_wext_siwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); u32 orts = wdev->wiphy->rts_threshold; @@ -281,8 +285,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts); int cfg80211_wext_giwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct wireless_dev *wdev = dev->ieee80211_ptr; rts->value = wdev->wiphy->rts_threshold; @@ -295,8 +300,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts); int cfg80211_wext_siwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *frag = &wrqu->frag; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); u32 ofrag = wdev->wiphy->frag_threshold; @@ -325,8 +331,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag); int cfg80211_wext_giwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *frag = &wrqu->frag; struct wireless_dev *wdev = dev->ieee80211_ptr; frag->value = wdev->wiphy->frag_threshold; @@ -339,8 +346,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag); static int cfg80211_wext_siwretry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *retry, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *retry = &wrqu->retry; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); u32 changed = 0; @@ -378,8 +386,9 @@ static int cfg80211_wext_siwretry(struct net_device *dev, int cfg80211_wext_giwretry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *retry, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *retry = &wrqu->retry; struct wireless_dev *wdev = dev->ieee80211_ptr; retry->disabled = 0; @@ -588,8 +597,9 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, static int cfg80211_wext_siwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *keybuf) + union iwreq_data *wrqu, char *keybuf) { + struct iw_point *erq = &wrqu->encoding; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); int idx, err; @@ -664,8 +674,9 @@ static int cfg80211_wext_siwencode(struct net_device *dev, static int cfg80211_wext_siwencodeext(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *erq = &wrqu->encoding; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; @@ -767,8 +778,9 @@ static int cfg80211_wext_siwencodeext(struct net_device *dev, static int cfg80211_wext_giwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *keybuf) + union iwreq_data *wrqu, char *keybuf) { + struct iw_point *erq = &wrqu->encoding; struct wireless_dev *wdev = dev->ieee80211_ptr; int idx; @@ -804,8 +816,9 @@ static int cfg80211_wext_giwencode(struct net_device *dev, static int cfg80211_wext_siwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *wextfreq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_freq *wextfreq = &wrqu->freq; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct cfg80211_chan_def chandef = { @@ -870,8 +883,9 @@ static int cfg80211_wext_siwfreq(struct net_device *dev, static int cfg80211_wext_giwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *freq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_freq *freq = &wrqu->freq; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct cfg80211_chan_def chandef = {}; @@ -1147,8 +1161,9 @@ static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) static int cfg80211_wext_siwauth(struct net_device *dev, struct iw_request_info *info, - struct iw_param *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *data = &wrqu->param; struct wireless_dev *wdev = dev->ieee80211_ptr; if (wdev->iftype != NL80211_IFTYPE_STATION) @@ -1180,7 +1195,7 @@ static int cfg80211_wext_siwauth(struct net_device *dev, static int cfg80211_wext_giwauth(struct net_device *dev, struct iw_request_info *info, - struct iw_param *data, char *extra) + union iwreq_data *wrqu, char *extra) { /* XXX: what do we need? */ @@ -1189,8 +1204,9 @@ static int cfg80211_wext_giwauth(struct net_device *dev, static int cfg80211_wext_siwpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *wrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *wrq = &wrqu->power; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); bool ps; @@ -1238,8 +1254,9 @@ static int cfg80211_wext_siwpower(struct net_device *dev, static int cfg80211_wext_giwpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *wrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *wrq = &wrqu->power; struct wireless_dev *wdev = dev->ieee80211_ptr; wrq->disabled = !wdev->ps; @@ -1249,8 +1266,9 @@ static int cfg80211_wext_giwpower(struct net_device *dev, static int cfg80211_wext_siwrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rate, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rate = &wrqu->bitrate; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct cfg80211_bitrate_mask mask; @@ -1307,8 +1325,9 @@ static int cfg80211_wext_siwrate(struct net_device *dev, static int cfg80211_wext_giwrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rate, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rate = &wrqu->bitrate; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct station_info sinfo = {}; @@ -1430,8 +1449,9 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) static int cfg80211_wext_siwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, char *extra) + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); int ret; @@ -1455,8 +1475,9 @@ static int cfg80211_wext_siwap(struct net_device *dev, static int cfg80211_wext_giwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, char *extra) + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); int ret; @@ -1480,8 +1501,9 @@ static int cfg80211_wext_giwap(struct net_device *dev, static int cfg80211_wext_siwessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *ssid) + union iwreq_data *wrqu, char *ssid) { + struct iw_point *data = &wrqu->data; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); int ret; @@ -1505,8 +1527,9 @@ static int cfg80211_wext_siwessid(struct net_device *dev, static int cfg80211_wext_giwessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *ssid) + union iwreq_data *wrqu, char *ssid) { + struct iw_point *data = &wrqu->data; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); int ret; @@ -1533,7 +1556,7 @@ static int cfg80211_wext_giwessid(struct net_device *dev, static int cfg80211_wext_siwpmksa(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); @@ -1584,78 +1607,39 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev, return ret; } -#define DEFINE_WEXT_COMPAT_STUB(func, type) \ - static int __ ## func(struct net_device *dev, \ - struct iw_request_info *info, \ - union iwreq_data *wrqu, \ - char *extra) \ - { \ - return func(dev, info, (type *)wrqu, extra); \ - } - -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point) -DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point) - static const iw_handler cfg80211_handlers[] = { - [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname, - [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq, - [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq, - [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode, - [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode, - [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange, - [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap, - [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap, - [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme, - [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, - [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan, - [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid, - [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid, - [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate, - [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate, - [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts, - [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts, - [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag, - [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag, - [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, - [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, - [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry, - [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry, - [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode, - [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode, - [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower, - [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower, - [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie, - [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth, - [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth, - [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext, - [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa, + [IW_IOCTL_IDX(SIOCGIWNAME)] = cfg80211_wext_giwname, + [IW_IOCTL_IDX(SIOCSIWFREQ)] = cfg80211_wext_siwfreq, + [IW_IOCTL_IDX(SIOCGIWFREQ)] = cfg80211_wext_giwfreq, + [IW_IOCTL_IDX(SIOCSIWMODE)] = cfg80211_wext_siwmode, + [IW_IOCTL_IDX(SIOCGIWMODE)] = cfg80211_wext_giwmode, + [IW_IOCTL_IDX(SIOCGIWRANGE)] = cfg80211_wext_giwrange, + [IW_IOCTL_IDX(SIOCSIWAP)] = cfg80211_wext_siwap, + [IW_IOCTL_IDX(SIOCGIWAP)] = cfg80211_wext_giwap, + [IW_IOCTL_IDX(SIOCSIWMLME)] = cfg80211_wext_siwmlme, + [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, + [IW_IOCTL_IDX(SIOCGIWSCAN)] = cfg80211_wext_giwscan, + [IW_IOCTL_IDX(SIOCSIWESSID)] = cfg80211_wext_siwessid, + [IW_IOCTL_IDX(SIOCGIWESSID)] = cfg80211_wext_giwessid, + [IW_IOCTL_IDX(SIOCSIWRATE)] = cfg80211_wext_siwrate, + [IW_IOCTL_IDX(SIOCGIWRATE)] = cfg80211_wext_giwrate, + [IW_IOCTL_IDX(SIOCSIWRTS)] = cfg80211_wext_siwrts, + [IW_IOCTL_IDX(SIOCGIWRTS)] = cfg80211_wext_giwrts, + [IW_IOCTL_IDX(SIOCSIWFRAG)] = cfg80211_wext_siwfrag, + [IW_IOCTL_IDX(SIOCGIWFRAG)] = cfg80211_wext_giwfrag, + [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, + [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, + [IW_IOCTL_IDX(SIOCSIWRETRY)] = cfg80211_wext_siwretry, + [IW_IOCTL_IDX(SIOCGIWRETRY)] = cfg80211_wext_giwretry, + [IW_IOCTL_IDX(SIOCSIWENCODE)] = cfg80211_wext_siwencode, + [IW_IOCTL_IDX(SIOCGIWENCODE)] = cfg80211_wext_giwencode, + [IW_IOCTL_IDX(SIOCSIWPOWER)] = cfg80211_wext_siwpower, + [IW_IOCTL_IDX(SIOCGIWPOWER)] = cfg80211_wext_giwpower, + [IW_IOCTL_IDX(SIOCSIWGENIE)] = cfg80211_wext_siwgenie, + [IW_IOCTL_IDX(SIOCSIWAUTH)] = cfg80211_wext_siwauth, + [IW_IOCTL_IDX(SIOCGIWAUTH)] = cfg80211_wext_giwauth, + [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= cfg80211_wext_siwencodeext, + [IW_IOCTL_IDX(SIOCSIWPMKSA)] = cfg80211_wext_siwpmksa, }; const struct iw_handler_def cfg80211_wext_handler = { diff --git a/net/wireless/wext-compat.h b/net/wireless/wext-compat.h index 8d3cc1552e2f..c02eb789e676 100644 --- a/net/wireless/wext-compat.h +++ b/net/wireless/wext-compat.h @@ -13,7 +13,7 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *freq, char *extra); + struct iw_freq *wextfreq, char *extra); int cfg80211_ibss_wext_giwfreq(struct net_device *dev, struct iw_request_info *info, struct iw_freq *freq, char *extra); @@ -32,7 +32,7 @@ int cfg80211_ibss_wext_giwessid(struct net_device *dev, int cfg80211_mgd_wext_siwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *freq, char *extra); + struct iw_freq *wextfreq, char *extra); int cfg80211_mgd_wext_giwfreq(struct net_device *dev, struct iw_request_info *info, struct iw_freq *freq, char *extra); @@ -51,10 +51,10 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev, int cfg80211_wext_siwmlme(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_siwgenie(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra); + union iwreq_data *wrqu, char *extra); int cfg80211_wext_freq(struct iw_freq *freq); diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c index 68f45afc352d..191c6d98c700 100644 --- a/net/wireless/wext-sme.c +++ b/net/wireless/wext-sme.c @@ -324,8 +324,9 @@ int cfg80211_mgd_wext_giwap(struct net_device *dev, int cfg80211_wext_siwgenie(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); u8 *ie = extra; @@ -374,7 +375,7 @@ int cfg80211_wext_siwgenie(struct net_device *dev, int cfg80211_wext_siwmlme(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct iw_mlme *mlme = (struct iw_mlme *)extra; From patchwork Mon Oct 17 20:34:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009589 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D30D1C43217 for ; Mon, 17 Oct 2022 20:37:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231478AbiJQUhs (ORCPT ); Mon, 17 Oct 2022 16:37:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231482AbiJQUhb (ORCPT ); Mon, 17 Oct 2022 16:37:31 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4ADDF80BD3; Mon, 17 Oct 2022 13:35:44 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 855B2B81AD3; Mon, 17 Oct 2022 20:34:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA7ABC433C1; Mon, 17 Oct 2022 20:34:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038898; bh=pr4++4yUHbZlDDwyrw3c+RvKoKW1WA0ngYLG9iMMutk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MrHVh88PjdMGfdAOf5Bim7C4ijNzrtPm7Ai19A9NZ+q3r08LrdzKnGZIHGSWUZ230 JsgVFUnWvvdkLZ2hgnlSu4x4Vajj1lL9ePVl4HW5uXncvlIWwrXZRsSUUn1uLoA5qo /4wfQsL6kFxU1uTRKUxiHVuYgJsH4w+6r5EQ9poI7hqrnEyIPVjjKRXt+jwH1IxgKu vYKtsG3xBrG1jbUGqEynnfgCQVzS9hCVB6PuaK5Q6u4ngJJTagu93SGDSPs++s2TQp TA99IJzxIqAStR8Wd+x+3kUb+vgRShV/+7BvZ5v5OMKIzUJDR5iFg2Ouajlhqzhx1W Bivv/zPi927Pg== Date: Mon, 17 Oct 2022 15:34:48 -0500 From: "Gustavo A. R. Silva" To: Stanislav Yakovlev , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 3/6][next] ipw2x00: Remove unnecessary cast to iw_handler in ipw_wx_handlers Message-ID: <421a4b4673da8fb610850f674d0994ad46bc1ed6.1666038048.git.gustavoars@kernel.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org Previous patches have removed the rest of the casts to iw_handler in ipw_wx_handlers array definition, and with that multiple -Wcast-function-type-strict warnings have been fixed. Remove the one cast to iw_handler remaining, which was not removed in previous patches because there was no -Wcast-function-type-strict warning associated with it. Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/intel/ipw2x00/ipw2200.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2200.c b/drivers/net/wireless/intel/ipw2x00/ipw2200.c index 5b483de18c81..3158f91b18d5 100644 --- a/drivers/net/wireless/intel/ipw2x00/ipw2200.c +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c @@ -9870,7 +9870,7 @@ static int ipw_wx_sw_reset(struct net_device *dev, /* Rebase the WE IOCTLs to zero for the handler array */ static iw_handler ipw_wx_handlers[] = { - IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname), + IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), IW_HANDLER(SIOCSIWFREQ, ipw_wx_set_freq), IW_HANDLER(SIOCGIWFREQ, ipw_wx_get_freq), IW_HANDLER(SIOCSIWMODE, ipw_wx_set_mode), From patchwork Mon Oct 17 20:35:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009590 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6806C4332F for ; Mon, 17 Oct 2022 20:38:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231587AbiJQUiz (ORCPT ); Mon, 17 Oct 2022 16:38:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231695AbiJQUia (ORCPT ); Mon, 17 Oct 2022 16:38:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D5C77FFA9; Mon, 17 Oct 2022 13:36:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5B766B81A76; Mon, 17 Oct 2022 20:35:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC2E4C433D6; Mon, 17 Oct 2022 20:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038942; bh=F36n4nCpfw2nmlWWxjmA4XyYrHFbK5qHOgNzg7nmRj0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NdRLJQlxY7HyEZv03xCk0qHwOIL+TyaiFtS0JB3ORyGrvVkUfPL8Fv751Pbpq68sU Hc73vcn6u8WSImmHsOHM63HAUiGvB/wvyLNsvg0cTrvUwwFqO7lSRGEid80qiTctZv yuIdJJu+9lKy+BEW6gYoGoa7VoTuf42HM5vKuT7h4Niv/u3S7zjww/8DCMq8s60N4w qAnuzpZ4K62dj+Ms+qclwpKHwd5i+ClOKmsiPzhcmrwaXmmjVPx759jYY3AkOEsRb4 DPfb7iW9hciXs0bLgFKibky7vQLARCEqK/DeyTXfIONjZ+8kW99wCpiDS5fI+9V1y1 QQkdlyJ96FhNQ== Date: Mon, 17 Oct 2022 15:35:33 -0500 From: "Gustavo A. R. Silva" To: Jouni Malinen , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 4/6][next] hostap: Avoid clashing function prototypes Message-ID: <099d191c65efdf2f5f7b40a87a7eb3aabcae3e04.1666038048.git.gustavoars@kernel.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org When built with Control Flow Integrity, function prototypes between caller and function declaration must match. These mismatches are visible at compile time with the new -Wcast-function-type-strict in Clang[1]. Fix a total of 42 warnings like these: ../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict] (iw_handler) prism2_get_name, /* SIOCGIWNAME */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ The hostap Wireless Extension handler callbacks (iw_handler) use a union for the data argument. Actually use the union and perform explicit member selection in the function body instead of having a function prototype mismatch. No significant binary differences were seen before/after changes. Link: https://github.com/KSPP/linux/issues/235 Link: https://reviews.llvm.org/D134831 [1] Signed-off-by: Gustavo A. R. Silva --- .../wireless/intersil/hostap/hostap_ioctl.c | 245 ++++++++++-------- 1 file changed, 133 insertions(+), 112 deletions(-) diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c index 4e0a0c881697..25dcc3f32b67 100644 --- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c +++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c @@ -91,7 +91,7 @@ static int prism2_get_datarates(struct net_device *dev, u8 *rates) static int prism2_get_name(struct net_device *dev, struct iw_request_info *info, - char *name, char *extra) + union iwreq_data *wrqu, char *extra) { u8 rates[10]; int len, i, over2 = 0; @@ -105,7 +105,7 @@ static int prism2_get_name(struct net_device *dev, } } - strcpy(name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS"); + strcpy(wrqu->name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS"); return 0; } @@ -113,8 +113,9 @@ static int prism2_get_name(struct net_device *dev, static int prism2_ioctl_siwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *keybuf) + union iwreq_data *wrqu, char *keybuf) { + struct iw_point *erq = &wrqu->encoding; struct hostap_interface *iface; local_info_t *local; int i; @@ -215,8 +216,9 @@ static int prism2_ioctl_siwencode(struct net_device *dev, static int prism2_ioctl_giwencode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *key) + union iwreq_data *wrqu, char *key) { + struct iw_point *erq = &wrqu->encoding; struct hostap_interface *iface; local_info_t *local; int i, len; @@ -321,8 +323,9 @@ static int hostap_set_rate(struct net_device *dev) static int prism2_ioctl_siwrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; struct hostap_interface *iface; local_info_t *local; @@ -381,8 +384,9 @@ static int prism2_ioctl_siwrate(struct net_device *dev, static int prism2_ioctl_giwrate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; u16 val; struct hostap_interface *iface; local_info_t *local; @@ -440,8 +444,9 @@ static int prism2_ioctl_giwrate(struct net_device *dev, static int prism2_ioctl_siwsens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *sens, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *sens = &wrqu->sens; struct hostap_interface *iface; local_info_t *local; @@ -461,8 +466,9 @@ static int prism2_ioctl_siwsens(struct net_device *dev, static int prism2_ioctl_giwsens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *sens, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *sens = &wrqu->sens; struct hostap_interface *iface; local_info_t *local; __le16 val; @@ -485,8 +491,9 @@ static int prism2_ioctl_giwsens(struct net_device *dev, /* Deprecated in new wireless extension API */ static int prism2_ioctl_giwaplist(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; struct sockaddr *addr; @@ -526,8 +533,9 @@ static int prism2_ioctl_giwaplist(struct net_device *dev, static int prism2_ioctl_siwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct hostap_interface *iface; local_info_t *local; __le16 val; @@ -553,8 +561,9 @@ static int prism2_ioctl_siwrts(struct net_device *dev, static int prism2_ioctl_giwrts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct hostap_interface *iface; local_info_t *local; __le16 val; @@ -576,8 +585,9 @@ static int prism2_ioctl_giwrts(struct net_device *dev, static int prism2_ioctl_siwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct hostap_interface *iface; local_info_t *local; __le16 val; @@ -603,8 +613,9 @@ static int prism2_ioctl_siwfrag(struct net_device *dev, static int prism2_ioctl_giwfrag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct hostap_interface *iface; local_info_t *local; __le16 val; @@ -669,8 +680,9 @@ static int hostap_join_ap(struct net_device *dev) static int prism2_ioctl_siwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, char *extra) + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; #ifdef PRISM2_NO_STATION_MODES return -EOPNOTSUPP; #else /* PRISM2_NO_STATION_MODES */ @@ -709,8 +721,9 @@ static int prism2_ioctl_siwap(struct net_device *dev, static int prism2_ioctl_giwap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *ap_addr, char *extra) + union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct hostap_interface *iface; local_info_t *local; @@ -745,8 +758,9 @@ static int prism2_ioctl_giwap(struct net_device *dev, static int prism2_ioctl_siwnickn(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *nickname) + union iwreq_data *wrqu, char *nickname) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; @@ -766,8 +780,9 @@ static int prism2_ioctl_siwnickn(struct net_device *dev, static int prism2_ioctl_giwnickn(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *nickname) + union iwreq_data *wrqu, char *nickname) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; int len; @@ -793,8 +808,9 @@ static int prism2_ioctl_giwnickn(struct net_device *dev, static int prism2_ioctl_siwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *freq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_freq *freq = &wrqu->freq; struct hostap_interface *iface; local_info_t *local; @@ -830,8 +846,9 @@ static int prism2_ioctl_siwfreq(struct net_device *dev, static int prism2_ioctl_giwfreq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *freq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_freq *freq = &wrqu->freq; struct hostap_interface *iface; local_info_t *local; u16 val; @@ -874,8 +891,9 @@ static void hostap_monitor_set_type(local_info_t *local) static int prism2_ioctl_siwessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *ssid) + union iwreq_data *wrqu, char *ssid) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; @@ -910,8 +928,9 @@ static int prism2_ioctl_siwessid(struct net_device *dev, static int prism2_ioctl_giwessid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *essid) + union iwreq_data *wrqu, char *essid) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; u16 val; @@ -946,8 +965,9 @@ static int prism2_ioctl_giwessid(struct net_device *dev, static int prism2_ioctl_giwrange(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; struct iw_range *range = (struct iw_range *) extra; @@ -1121,8 +1141,9 @@ static int hostap_monitor_mode_disable(local_info_t *local) static int prism2_ioctl_siwmode(struct net_device *dev, struct iw_request_info *info, - __u32 *mode, char *extra) + union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct hostap_interface *iface; local_info_t *local; int double_reset = 0; @@ -1197,8 +1218,9 @@ static int prism2_ioctl_siwmode(struct net_device *dev, static int prism2_ioctl_giwmode(struct net_device *dev, struct iw_request_info *info, - __u32 *mode, char *extra) + union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct hostap_interface *iface; local_info_t *local; @@ -1222,8 +1244,9 @@ static int prism2_ioctl_giwmode(struct net_device *dev, static int prism2_ioctl_siwpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *wrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *wrq = &wrqu->power; #ifdef PRISM2_NO_STATION_MODES return -EOPNOTSUPP; #else /* PRISM2_NO_STATION_MODES */ @@ -1281,8 +1304,9 @@ static int prism2_ioctl_siwpower(struct net_device *dev, static int prism2_ioctl_giwpower(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->power; #ifdef PRISM2_NO_STATION_MODES return -EOPNOTSUPP; #else /* PRISM2_NO_STATION_MODES */ @@ -1339,8 +1363,9 @@ static int prism2_ioctl_giwpower(struct net_device *dev, static int prism2_ioctl_siwretry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->retry; struct hostap_interface *iface; local_info_t *local; @@ -1400,8 +1425,9 @@ static int prism2_ioctl_siwretry(struct net_device *dev, static int prism2_ioctl_giwretry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->retry; struct hostap_interface *iface; local_info_t *local; __le16 shortretry, longretry, lifetime, altretry; @@ -1494,8 +1520,9 @@ static u16 prism2_txpower_dBm_to_hfa386x(int val) static int prism2_ioctl_siwtxpow(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->txpower; struct hostap_interface *iface; local_info_t *local; #ifdef RAW_TXPOWER_SETTING @@ -1575,9 +1602,10 @@ static int prism2_ioctl_siwtxpow(struct net_device *dev, static int prism2_ioctl_giwtxpow(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rrq, char *extra) + union iwreq_data *wrqu, char *extra) { #ifdef RAW_TXPOWER_SETTING + struct iw_param *rrq = &wrqu->txpower; struct hostap_interface *iface; local_info_t *local; u16 resp0; @@ -1710,8 +1738,9 @@ static inline int prism2_request_scan(struct net_device *dev) static int prism2_ioctl_siwscan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; int ret; @@ -2057,8 +2086,9 @@ static inline int prism2_ioctl_giwscan_sta(struct net_device *dev, static int prism2_ioctl_giwscan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface; local_info_t *local; int res; @@ -2303,7 +2333,7 @@ static int prism2_ioctl_priv_inquire(struct net_device *dev, int *i) static int prism2_ioctl_priv_prism2_param(struct net_device *dev, struct iw_request_info *info, - void *wrqu, char *extra) + union iwreq_data *uwrq, char *extra) { struct hostap_interface *iface; local_info_t *local; @@ -2654,7 +2684,7 @@ static int prism2_ioctl_priv_prism2_param(struct net_device *dev, static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev, struct iw_request_info *info, - void *wrqu, char *extra) + union iwreq_data *wrqu, char *extra) { struct hostap_interface *iface; local_info_t *local; @@ -2841,7 +2871,7 @@ static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev, static int prism2_ioctl_priv_readmif(struct net_device *dev, struct iw_request_info *info, - void *wrqu, char *extra) + union iwreq_data *wrqu, char *extra) { struct hostap_interface *iface; local_info_t *local; @@ -2862,7 +2892,7 @@ static int prism2_ioctl_priv_readmif(struct net_device *dev, static int prism2_ioctl_priv_writemif(struct net_device *dev, struct iw_request_info *info, - void *wrqu, char *extra) + union iwreq_data *wrqu, char *extra) { struct hostap_interface *iface; local_info_t *local; @@ -2885,7 +2915,7 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i) struct hostap_interface *iface; local_info_t *local; int ret = 0; - u32 mode; + union iwreq_data wrqu; iface = netdev_priv(dev); local = iface->local; @@ -2899,8 +2929,8 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i) if (*i == 0) { /* Disable monitor mode - old mode was not saved, so go to * Master mode */ - mode = IW_MODE_MASTER; - ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL); + wrqu.mode = IW_MODE_MASTER; + ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL); } else if (*i == 1) { /* netlink socket mode is not supported anymore since it did * not separate different devices from each other and was not @@ -2916,8 +2946,8 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i) local->monitor_type = PRISM2_MONITOR_PRISM; break; } - mode = IW_MODE_MONITOR; - ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL); + wrqu.mode = IW_MODE_MONITOR; + ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL); hostap_monitor_mode_enable(local); } else ret = -EINVAL; @@ -3079,8 +3109,9 @@ static int prism2_set_genericelement(struct net_device *dev, u8 *elem, static int prism2_ioctl_siwauth(struct net_device *dev, struct iw_request_info *info, - struct iw_param *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *data = &wrqu->param; struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; @@ -3145,8 +3176,9 @@ static int prism2_ioctl_siwauth(struct net_device *dev, static int prism2_ioctl_giwauth(struct net_device *dev, struct iw_request_info *info, - struct iw_param *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *data = &wrqu->param; struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; @@ -3184,8 +3216,9 @@ static int prism2_ioctl_giwauth(struct net_device *dev, static int prism2_ioctl_siwencodeext(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *erq = &wrqu->encoding; struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; @@ -3358,8 +3391,9 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev, static int prism2_ioctl_giwencodeext(struct net_device *dev, struct iw_request_info *info, - struct iw_point *erq, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *erq = &wrqu->encoding; struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; struct lib80211_crypt_data **crypt; @@ -3666,16 +3700,18 @@ static int prism2_ioctl_set_assoc_ap_addr(local_info_t *local, static int prism2_ioctl_siwgenie(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; return prism2_set_genericelement(dev, extra, data->length); } static int prism2_ioctl_giwgenie(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_point *data = &wrqu->data; struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; int len = local->generic_elem_len - 2; @@ -3713,7 +3749,7 @@ static int prism2_ioctl_set_generic_element(local_info_t *local, static int prism2_ioctl_siwmlme(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *extra) + union iwreq_data *wrqu, char *extra) { struct hostap_interface *iface = netdev_priv(dev); local_info_t *local = iface->local; @@ -3864,70 +3900,55 @@ const struct ethtool_ops prism2_ethtool_ops = { static const iw_handler prism2_handler[] = { - (iw_handler) NULL, /* SIOCSIWCOMMIT */ - (iw_handler) prism2_get_name, /* SIOCGIWNAME */ - (iw_handler) NULL, /* SIOCSIWNWID */ - (iw_handler) NULL, /* SIOCGIWNWID */ - (iw_handler) prism2_ioctl_siwfreq, /* SIOCSIWFREQ */ - (iw_handler) prism2_ioctl_giwfreq, /* SIOCGIWFREQ */ - (iw_handler) prism2_ioctl_siwmode, /* SIOCSIWMODE */ - (iw_handler) prism2_ioctl_giwmode, /* SIOCGIWMODE */ - (iw_handler) prism2_ioctl_siwsens, /* SIOCSIWSENS */ - (iw_handler) prism2_ioctl_giwsens, /* SIOCGIWSENS */ - (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */ - (iw_handler) prism2_ioctl_giwrange, /* SIOCGIWRANGE */ - (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */ - (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */ - (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */ - (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */ - iw_handler_set_spy, /* SIOCSIWSPY */ - iw_handler_get_spy, /* SIOCGIWSPY */ - iw_handler_set_thrspy, /* SIOCSIWTHRSPY */ - iw_handler_get_thrspy, /* SIOCGIWTHRSPY */ - (iw_handler) prism2_ioctl_siwap, /* SIOCSIWAP */ - (iw_handler) prism2_ioctl_giwap, /* SIOCGIWAP */ - (iw_handler) prism2_ioctl_siwmlme, /* SIOCSIWMLME */ - (iw_handler) prism2_ioctl_giwaplist, /* SIOCGIWAPLIST */ - (iw_handler) prism2_ioctl_siwscan, /* SIOCSIWSCAN */ - (iw_handler) prism2_ioctl_giwscan, /* SIOCGIWSCAN */ - (iw_handler) prism2_ioctl_siwessid, /* SIOCSIWESSID */ - (iw_handler) prism2_ioctl_giwessid, /* SIOCGIWESSID */ - (iw_handler) prism2_ioctl_siwnickn, /* SIOCSIWNICKN */ - (iw_handler) prism2_ioctl_giwnickn, /* SIOCGIWNICKN */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) prism2_ioctl_siwrate, /* SIOCSIWRATE */ - (iw_handler) prism2_ioctl_giwrate, /* SIOCGIWRATE */ - (iw_handler) prism2_ioctl_siwrts, /* SIOCSIWRTS */ - (iw_handler) prism2_ioctl_giwrts, /* SIOCGIWRTS */ - (iw_handler) prism2_ioctl_siwfrag, /* SIOCSIWFRAG */ - (iw_handler) prism2_ioctl_giwfrag, /* SIOCGIWFRAG */ - (iw_handler) prism2_ioctl_siwtxpow, /* SIOCSIWTXPOW */ - (iw_handler) prism2_ioctl_giwtxpow, /* SIOCGIWTXPOW */ - (iw_handler) prism2_ioctl_siwretry, /* SIOCSIWRETRY */ - (iw_handler) prism2_ioctl_giwretry, /* SIOCGIWRETRY */ - (iw_handler) prism2_ioctl_siwencode, /* SIOCSIWENCODE */ - (iw_handler) prism2_ioctl_giwencode, /* SIOCGIWENCODE */ - (iw_handler) prism2_ioctl_siwpower, /* SIOCSIWPOWER */ - (iw_handler) prism2_ioctl_giwpower, /* SIOCGIWPOWER */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) prism2_ioctl_siwgenie, /* SIOCSIWGENIE */ - (iw_handler) prism2_ioctl_giwgenie, /* SIOCGIWGENIE */ - (iw_handler) prism2_ioctl_siwauth, /* SIOCSIWAUTH */ - (iw_handler) prism2_ioctl_giwauth, /* SIOCGIWAUTH */ - (iw_handler) prism2_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */ - (iw_handler) prism2_ioctl_giwencodeext, /* SIOCGIWENCODEEXT */ - (iw_handler) NULL, /* SIOCSIWPMKSA */ - (iw_handler) NULL, /* -- hole -- */ + IW_HANDLER(SIOCGIWNAME, prism2_get_name), + IW_HANDLER(SIOCSIWFREQ, prism2_ioctl_siwfreq), + IW_HANDLER(SIOCGIWFREQ, prism2_ioctl_giwfreq), + IW_HANDLER(SIOCSIWMODE, prism2_ioctl_siwmode), + IW_HANDLER(SIOCGIWMODE, prism2_ioctl_giwmode), + IW_HANDLER(SIOCSIWSENS, prism2_ioctl_siwsens), + IW_HANDLER(SIOCGIWSENS, prism2_ioctl_giwsens), + IW_HANDLER(SIOCGIWRANGE, prism2_ioctl_giwrange), + IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy), + IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy), + IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy), + IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy), + IW_HANDLER(SIOCSIWAP, prism2_ioctl_siwap), + IW_HANDLER(SIOCGIWAP, prism2_ioctl_giwap), + IW_HANDLER(SIOCSIWMLME, prism2_ioctl_siwmlme), + IW_HANDLER(SIOCGIWAPLIST, prism2_ioctl_giwaplist), + IW_HANDLER(SIOCSIWSCAN, prism2_ioctl_siwscan), + IW_HANDLER(SIOCGIWSCAN, prism2_ioctl_giwscan), + IW_HANDLER(SIOCSIWESSID, prism2_ioctl_siwessid), + IW_HANDLER(SIOCGIWESSID, prism2_ioctl_giwessid), + IW_HANDLER(SIOCSIWNICKN, prism2_ioctl_siwnickn), + IW_HANDLER(SIOCGIWNICKN, prism2_ioctl_giwnickn), + IW_HANDLER(SIOCSIWRATE, prism2_ioctl_siwrate), + IW_HANDLER(SIOCGIWRATE, prism2_ioctl_giwrate), + IW_HANDLER(SIOCSIWRTS, prism2_ioctl_siwrts), + IW_HANDLER(SIOCGIWRTS, prism2_ioctl_giwrts), + IW_HANDLER(SIOCSIWFRAG, prism2_ioctl_siwfrag), + IW_HANDLER(SIOCGIWFRAG, prism2_ioctl_giwfrag), + IW_HANDLER(SIOCSIWTXPOW, prism2_ioctl_siwtxpow), + IW_HANDLER(SIOCGIWTXPOW, prism2_ioctl_giwtxpow), + IW_HANDLER(SIOCSIWRETRY, prism2_ioctl_siwretry), + IW_HANDLER(SIOCGIWRETRY, prism2_ioctl_giwretry), + IW_HANDLER(SIOCSIWENCODE, prism2_ioctl_siwencode), + IW_HANDLER(SIOCGIWENCODE, prism2_ioctl_giwencode), + IW_HANDLER(SIOCSIWPOWER, prism2_ioctl_siwpower), + IW_HANDLER(SIOCGIWPOWER, prism2_ioctl_giwpower), + IW_HANDLER(SIOCSIWGENIE, prism2_ioctl_siwgenie), + IW_HANDLER(SIOCGIWGENIE, prism2_ioctl_giwgenie), + IW_HANDLER(SIOCSIWAUTH, prism2_ioctl_siwauth), + IW_HANDLER(SIOCGIWAUTH, prism2_ioctl_giwauth), + IW_HANDLER(SIOCSIWENCODEEXT, prism2_ioctl_siwencodeext), + IW_HANDLER(SIOCGIWENCODEEXT, prism2_ioctl_giwencodeext), }; -static const iw_handler prism2_private_handler[] = -{ /* SIOCIWFIRSTPRIV + */ - (iw_handler) prism2_ioctl_priv_prism2_param, /* 0 */ - (iw_handler) prism2_ioctl_priv_get_prism2_param, /* 1 */ - (iw_handler) prism2_ioctl_priv_writemif, /* 2 */ - (iw_handler) prism2_ioctl_priv_readmif, /* 3 */ +static const iw_handler prism2_private_handler[] = { + IW_HANDLER(SIOCIWFIRSTPRIV + 0, prism2_ioctl_priv_prism2_param), + IW_HANDLER(SIOCIWFIRSTPRIV + 1, prism2_ioctl_priv_get_prism2_param), + IW_HANDLER(SIOCIWFIRSTPRIV + 2, prism2_ioctl_priv_writemif), + IW_HANDLER(SIOCIWFIRSTPRIV + 3, prism2_ioctl_priv_readmif), }; const struct iw_handler_def hostap_iw_handler_def = @@ -3935,8 +3956,8 @@ const struct iw_handler_def hostap_iw_handler_def = .num_standard = ARRAY_SIZE(prism2_handler), .num_private = ARRAY_SIZE(prism2_private_handler), .num_private_args = ARRAY_SIZE(prism2_priv), - .standard = (iw_handler *) prism2_handler, - .private = (iw_handler *) prism2_private_handler, + .standard = prism2_handler, + .private = prism2_private_handler, .private_args = (struct iw_priv_args *) prism2_priv, .get_wireless_stats = hostap_get_wireless_stats, }; From patchwork Mon Oct 17 20:35:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009591 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BCF7BC433FE for ; Mon, 17 Oct 2022 20:39:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231689AbiJQUjM (ORCPT ); Mon, 17 Oct 2022 16:39:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231735AbiJQUie (ORCPT ); Mon, 17 Oct 2022 16:38:34 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB37880F4F; Mon, 17 Oct 2022 13:36:23 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D1BDAB81A74; Mon, 17 Oct 2022 20:36:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2A85C433C1; Mon, 17 Oct 2022 20:36:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038966; bh=pbOZw+bdkvn1CI7laJVHYAyhhP8M4FbHNGoIE07IU3w=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aIhdU2qP2V5tRf5rVNwY8ZASJAZDj1tA2jxD91+CsVH9Rw3rf1eKn351CV81VQFoL ixEYeXfij43BwnL/QZ/nFutbruHyT9yWnggO1kxKoTBgaZHLpuIksXmN5ZaP7xcHax siOZZ201NYfh+1s6RvRiSP2ZJ52If4c2YQVsoRwZ3kee1FWzBYbIFKH+xBcW98hTaN j69ix+bp9QuTi2/75II5DW3qhLUzisMJXS5dDhXDT1qQ6FDytYkup8Mu2jZD8zGDJw Fh9pTycPPt06qEJWYj3LvJ1I0VHM9naiKHSlzCJhNlMNWg9IY3b/WHTeW2dejrsBKn y5KEjHz51Vx6Q== Date: Mon, 17 Oct 2022 15:35:57 -0500 From: "Gustavo A. R. Silva" To: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 5/6][next] zd1201: Avoid clashing function prototypes Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org When built with Control Flow Integrity, function prototypes between caller and function declaration must match. These mismatches are visible at compile time with the new -Wcast-function-type-strict in Clang[1]. Fix a total of 30 warnings like these: ../drivers/net/wireless/zydas/zd1201.c:1560:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_freq *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict] (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ The zd1201 Wireless Extension handler callbacks (iw_handler) use a union for the data argument. Actually use the union and perform explicit member selection in the function body instead of having a function prototype mismatch. No significant binary differences were seen before/after changes. Link: https://github.com/KSPP/linux/issues/233 Link: https://reviews.llvm.org/D134831 [1] Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/zydas/zd1201.c | 173 ++++++++++++++-------------- 1 file changed, 88 insertions(+), 85 deletions(-) diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c index 82bc0d44212e..5111b6089fb9 100644 --- a/drivers/net/wireless/zydas/zd1201.c +++ b/drivers/net/wireless/zydas/zd1201.c @@ -886,7 +886,7 @@ static void zd1201_set_multicast(struct net_device *dev) } static int zd1201_config_commit(struct net_device *dev, - struct iw_request_info *info, struct iw_point *data, char *essid) + struct iw_request_info *info, union iwreq_data *wrqu, char *essid) { struct zd1201 *zd = netdev_priv(dev); @@ -894,15 +894,16 @@ static int zd1201_config_commit(struct net_device *dev, } static int zd1201_get_name(struct net_device *dev, - struct iw_request_info *info, char *name, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { - strcpy(name, "IEEE 802.11b"); + strcpy(wrqu->name, "IEEE 802.11b"); return 0; } static int zd1201_set_freq(struct net_device *dev, - struct iw_request_info *info, struct iw_freq *freq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_freq *freq = &wrqu->freq; struct zd1201 *zd = netdev_priv(dev); short channel = 0; int err; @@ -922,8 +923,9 @@ static int zd1201_set_freq(struct net_device *dev, } static int zd1201_get_freq(struct net_device *dev, - struct iw_request_info *info, struct iw_freq *freq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_freq *freq = &wrqu->freq; struct zd1201 *zd = netdev_priv(dev); short channel; int err; @@ -938,8 +940,9 @@ static int zd1201_get_freq(struct net_device *dev, } static int zd1201_set_mode(struct net_device *dev, - struct iw_request_info *info, __u32 *mode, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct zd1201 *zd = netdev_priv(dev); short porttype, monitor = 0; unsigned char buffer[IW_ESSID_MAX_SIZE+2]; @@ -1001,8 +1004,9 @@ static int zd1201_set_mode(struct net_device *dev, } static int zd1201_get_mode(struct net_device *dev, - struct iw_request_info *info, __u32 *mode, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + __u32 *mode = &wrqu->mode; struct zd1201 *zd = netdev_priv(dev); short porttype; int err; @@ -1038,8 +1042,9 @@ static int zd1201_get_mode(struct net_device *dev, } static int zd1201_get_range(struct net_device *dev, - struct iw_request_info *info, struct iw_point *wrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_point *wrq = &wrqu->data; struct iw_range *range = (struct iw_range *)extra; wrq->length = sizeof(struct iw_range); @@ -1077,8 +1082,9 @@ static int zd1201_get_range(struct net_device *dev, * the stats after asking the bssid. */ static int zd1201_get_wap(struct net_device *dev, - struct iw_request_info *info, struct sockaddr *ap_addr, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct sockaddr *ap_addr = &wrqu->ap_addr; struct zd1201 *zd = netdev_priv(dev); unsigned char buffer[6]; @@ -1098,15 +1104,16 @@ static int zd1201_get_wap(struct net_device *dev, } static int zd1201_set_scan(struct net_device *dev, - struct iw_request_info *info, struct iw_point *srq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { /* We do everything in get_scan */ return 0; } static int zd1201_get_scan(struct net_device *dev, - struct iw_request_info *info, struct iw_point *srq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_point *srq = &wrqu->data; struct zd1201 *zd = netdev_priv(dev); int err, i, j, enabled_save; struct iw_event iwe; @@ -1197,8 +1204,9 @@ static int zd1201_get_scan(struct net_device *dev, } static int zd1201_set_essid(struct net_device *dev, - struct iw_request_info *info, struct iw_point *data, char *essid) + struct iw_request_info *info, union iwreq_data *wrqu, char *essid) { + struct iw_point *data = &wrqu->data; struct zd1201 *zd = netdev_priv(dev); if (data->length > IW_ESSID_MAX_SIZE) @@ -1212,8 +1220,9 @@ static int zd1201_set_essid(struct net_device *dev, } static int zd1201_get_essid(struct net_device *dev, - struct iw_request_info *info, struct iw_point *data, char *essid) + struct iw_request_info *info, union iwreq_data *wrqu, char *essid) { + struct iw_point *data = &wrqu->data; struct zd1201 *zd = netdev_priv(dev); memcpy(essid, zd->essid, zd->essidlen); @@ -1224,8 +1233,9 @@ static int zd1201_get_essid(struct net_device *dev, } static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info, - struct iw_point *data, char *nick) + union iwreq_data *wrqu, char *nick) { + struct iw_point *data = &wrqu->data; strcpy(nick, "zd1201"); data->flags = 1; data->length = strlen(nick); @@ -1233,8 +1243,9 @@ static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info, } static int zd1201_set_rate(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; struct zd1201 *zd = netdev_priv(dev); short rate; int err; @@ -1266,8 +1277,9 @@ static int zd1201_set_rate(struct net_device *dev, } static int zd1201_get_rate(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->bitrate; struct zd1201 *zd = netdev_priv(dev); short rate; int err; @@ -1299,8 +1311,9 @@ static int zd1201_get_rate(struct net_device *dev, } static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct zd1201 *zd = netdev_priv(dev); int err; short val = rts->value; @@ -1319,8 +1332,9 @@ static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info, } static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *rts, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *rts = &wrqu->rts; struct zd1201 *zd = netdev_priv(dev); short rtst; int err; @@ -1336,8 +1350,9 @@ static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info, } static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *frag = &wrqu->frag; struct zd1201 *zd = netdev_priv(dev); int err; short val = frag->value; @@ -1357,8 +1372,9 @@ static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info, } static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *frag, char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *frag = &wrqu->frag; struct zd1201 *zd = netdev_priv(dev); short fragt; int err; @@ -1374,20 +1390,21 @@ static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info, } static int zd1201_set_retry(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { return 0; } static int zd1201_get_retry(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { return 0; } static int zd1201_set_encode(struct net_device *dev, - struct iw_request_info *info, struct iw_point *erq, char *key) + struct iw_request_info *info, union iwreq_data *wrqu, char *key) { + struct iw_point *erq = &wrqu->encoding; struct zd1201 *zd = netdev_priv(dev); short i; int err, rid; @@ -1443,8 +1460,9 @@ static int zd1201_set_encode(struct net_device *dev, } static int zd1201_get_encode(struct net_device *dev, - struct iw_request_info *info, struct iw_point *erq, char *key) + struct iw_request_info *info, union iwreq_data *wrqu, char *key) { + struct iw_point *erq = &wrqu->encoding; struct zd1201 *zd = netdev_priv(dev); short i; int err; @@ -1476,8 +1494,9 @@ static int zd1201_get_encode(struct net_device *dev, } static int zd1201_set_power(struct net_device *dev, - struct iw_request_info *info, struct iw_param *vwrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->power; struct zd1201 *zd = netdev_priv(dev); short enabled, duration, level; int err; @@ -1515,8 +1534,9 @@ static int zd1201_set_power(struct net_device *dev, } static int zd1201_get_power(struct net_device *dev, - struct iw_request_info *info, struct iw_param *vwrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->power; struct zd1201 *zd = netdev_priv(dev); short enabled, level, duration; int err; @@ -1553,57 +1573,37 @@ static int zd1201_get_power(struct net_device *dev, static const iw_handler zd1201_iw_handler[] = { - (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */ - (iw_handler) zd1201_get_name, /* SIOCGIWNAME */ - (iw_handler) NULL, /* SIOCSIWNWID */ - (iw_handler) NULL, /* SIOCGIWNWID */ - (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */ - (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */ - (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */ - (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */ - (iw_handler) NULL, /* SIOCSIWSENS */ - (iw_handler) NULL, /* SIOCGIWSENS */ - (iw_handler) NULL, /* SIOCSIWRANGE */ - (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */ - (iw_handler) NULL, /* SIOCSIWPRIV */ - (iw_handler) NULL, /* SIOCGIWPRIV */ - (iw_handler) NULL, /* SIOCSIWSTATS */ - (iw_handler) NULL, /* SIOCGIWSTATS */ - (iw_handler) NULL, /* SIOCSIWSPY */ - (iw_handler) NULL, /* SIOCGIWSPY */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */ - (iw_handler) zd1201_get_wap, /* SIOCGIWAP */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* SIOCGIWAPLIST */ - (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */ - (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */ - (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */ - (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */ - (iw_handler) NULL, /* SIOCSIWNICKN */ - (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */ - (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */ - (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */ - (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */ - (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */ - (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */ - (iw_handler) NULL, /* SIOCSIWTXPOW */ - (iw_handler) NULL, /* SIOCGIWTXPOW */ - (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */ - (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */ - (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */ - (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */ - (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */ - (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */ + IW_HANDLER(SIOCSIWCOMMIT, zd1201_config_commit), + IW_HANDLER(SIOCGIWNAME, zd1201_get_name), + IW_HANDLER(SIOCSIWFREQ, zd1201_set_freq), + IW_HANDLER(SIOCGIWFREQ, zd1201_get_freq), + IW_HANDLER(SIOCSIWMODE, zd1201_set_mode), + IW_HANDLER(SIOCGIWMODE, zd1201_get_mode), + IW_HANDLER(SIOCGIWRANGE, zd1201_get_range), + IW_HANDLER(SIOCGIWAP, zd1201_get_wap), + IW_HANDLER(SIOCSIWSCAN, zd1201_set_scan), + IW_HANDLER(SIOCGIWSCAN, zd1201_get_scan), + IW_HANDLER(SIOCSIWESSID, zd1201_set_essid), + IW_HANDLER(SIOCGIWESSID, zd1201_get_essid), + IW_HANDLER(SIOCGIWNICKN, zd1201_get_nick), + IW_HANDLER(SIOCSIWRATE, zd1201_set_rate), + IW_HANDLER(SIOCGIWRATE, zd1201_get_rate), + IW_HANDLER(SIOCSIWRTS, zd1201_set_rts), + IW_HANDLER(SIOCGIWRTS, zd1201_get_rts), + IW_HANDLER(SIOCSIWFRAG, zd1201_set_frag), + IW_HANDLER(SIOCGIWFRAG, zd1201_get_frag), + IW_HANDLER(SIOCSIWRETRY, zd1201_set_retry), + IW_HANDLER(SIOCGIWRETRY, zd1201_get_retry), + IW_HANDLER(SIOCSIWENCODE, zd1201_set_encode), + IW_HANDLER(SIOCGIWENCODE, zd1201_get_encode), + IW_HANDLER(SIOCSIWPOWER, zd1201_set_power), + IW_HANDLER(SIOCGIWPOWER, zd1201_get_power), }; static int zd1201_set_hostauth(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->param; struct zd1201 *zd = netdev_priv(dev); if (!zd->ap) @@ -1613,8 +1613,9 @@ static int zd1201_set_hostauth(struct net_device *dev, } static int zd1201_get_hostauth(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->param; struct zd1201 *zd = netdev_priv(dev); short hostauth; int err; @@ -1632,8 +1633,9 @@ static int zd1201_get_hostauth(struct net_device *dev, } static int zd1201_auth_sta(struct net_device *dev, - struct iw_request_info *info, struct sockaddr *sta, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct sockaddr *sta = &wrqu->ap_addr; struct zd1201 *zd = netdev_priv(dev); unsigned char buffer[10]; @@ -1648,8 +1650,9 @@ static int zd1201_auth_sta(struct net_device *dev, } static int zd1201_set_maxassoc(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->param; struct zd1201 *zd = netdev_priv(dev); if (!zd->ap) @@ -1659,8 +1662,9 @@ static int zd1201_set_maxassoc(struct net_device *dev, } static int zd1201_get_maxassoc(struct net_device *dev, - struct iw_request_info *info, struct iw_param *rrq, char *extra) + struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { + struct iw_param *rrq = &wrqu->param; struct zd1201 *zd = netdev_priv(dev); short maxassoc; int err; @@ -1678,12 +1682,11 @@ static int zd1201_get_maxassoc(struct net_device *dev, } static const iw_handler zd1201_private_handler[] = { - (iw_handler) zd1201_set_hostauth, /* ZD1201SIWHOSTAUTH */ - (iw_handler) zd1201_get_hostauth, /* ZD1201GIWHOSTAUTH */ - (iw_handler) zd1201_auth_sta, /* ZD1201SIWAUTHSTA */ - (iw_handler) NULL, /* nothing to get */ - (iw_handler) zd1201_set_maxassoc, /* ZD1201SIMAXASSOC */ - (iw_handler) zd1201_get_maxassoc, /* ZD1201GIMAXASSOC */ + IW_HANDLER(ZD1201SIWHOSTAUTH, zd1201_set_hostauth), + IW_HANDLER(ZD1201GIWHOSTAUTH, zd1201_get_hostauth), + IW_HANDLER(ZD1201SIWAUTHSTA, zd1201_auth_sta), + IW_HANDLER(ZD1201SIWMAXASSOC, zd1201_set_maxassoc), + IW_HANDLER(ZD1201GIWMAXASSOC, zd1201_get_maxassoc), }; static const struct iw_priv_args zd1201_private_args[] = { @@ -1703,8 +1706,8 @@ static const struct iw_handler_def zd1201_iw_handlers = { .num_standard = ARRAY_SIZE(zd1201_iw_handler), .num_private = ARRAY_SIZE(zd1201_private_handler), .num_private_args = ARRAY_SIZE(zd1201_private_args), - .standard = (iw_handler *)zd1201_iw_handler, - .private = (iw_handler *)zd1201_private_handler, + .standard = zd1201_iw_handler, + .private = zd1201_private_handler, .private_args = (struct iw_priv_args *) zd1201_private_args, .get_wireless_stats = zd1201_get_wireless_stats, }; From patchwork Mon Oct 17 20:36:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13009592 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9AB7C433FE for ; Mon, 17 Oct 2022 20:40:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231703AbiJQUkD (ORCPT ); Mon, 17 Oct 2022 16:40:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230476AbiJQUj0 (ORCPT ); Mon, 17 Oct 2022 16:39:26 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EAC9F7437F; Mon, 17 Oct 2022 13:36:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2A6E061280; Mon, 17 Oct 2022 20:36:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6873CC433C1; Mon, 17 Oct 2022 20:36:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666038989; bh=8750zFEwFVNAjzVEB/qQuvRZAcia7DBMMJZC9I72k5g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JBDjXlRt9lKmF7p3KvZ1zR8MFGWbZcgJTW19bhyQHAMUg/IA466A9F3PSHJdhkzTt v5K7cxcdQziZerLEnb8M9AWvHeESdpp15Fh0H0+DeYQdUZ8waxh9bSdrlKmxnv2k1K wpe42i075BIULjmIAcrMZR1V8UoDuNIPVZfghxB1q3SpuTppTtRsIhhP0UYRZqdUv+ uKI1gzDfzjOee+6invQQHC48hqSAcocX/ovBeNgleMI4TA4eWGz5elOcWW/cyUy3FD hKewJsrGH5I7cQSq7ytyGOiIrMrODhQJLKOshZneEWgjv35Z0bPdoIOoN9C78DD8rw Gr3M3cyCQORKA== Date: Mon, 17 Oct 2022 15:36:20 -0500 From: "Gustavo A. R. Silva" To: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 6/6][next] airo: Avoid clashing function prototypes Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org When built with Control Flow Integrity, function prototypes between caller and function declaration must match. These mismatches are visible at compile time with the new -Wcast-function-type-strict in Clang[1]. Fix a total of 32 warnings like these: ../drivers/net/wireless/cisco/airo.c:7570:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, void *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict] (iw_handler) airo_config_commit, /* SIOCSIWCOMMIT */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The airo Wireless Extension handler callbacks (iw_handler) use a union for the data argument. Actually use the union and perform explicit member selection in the function body instead of having a function prototype mismatch. No significant binary differences were seen before/after changes. Link: https://github.com/KSPP/linux/issues/236 Link: https://reviews.llvm.org/D134831 [1] Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook --- drivers/net/wireless/cisco/airo.c | 203 ++++++++++++++++-------------- 1 file changed, 107 insertions(+), 96 deletions(-) diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c index 10daef81c355..b04c586943f3 100644 --- a/drivers/net/wireless/cisco/airo.c +++ b/drivers/net/wireless/cisco/airo.c @@ -4807,7 +4807,8 @@ static int get_dec_u16(char *buffer, int *start, int limit) } static int airo_config_commit(struct net_device *dev, - struct iw_request_info *info, void *zwrq, + struct iw_request_info *info, + union iwreq_data *wrqu, char *extra); static inline int sniffing_mode(struct airo_info *ai) @@ -5804,10 +5805,10 @@ static int airo_get_quality (StatusRid *status_rid, CapabilityRid *cap_rid) */ static int airo_get_name(struct net_device *dev, struct iw_request_info *info, - char *cwrq, + union iwreq_data *cwrq, char *extra) { - strcpy(cwrq, "IEEE 802.11-DS"); + strcpy(cwrq->name, "IEEE 802.11-DS"); return 0; } @@ -5817,9 +5818,10 @@ static int airo_get_name(struct net_device *dev, */ static int airo_set_freq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *fwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_freq *fwrq = &wrqu->freq; struct airo_info *local = dev->ml_priv; int rc = -EINPROGRESS; /* Call commit handler */ @@ -5858,9 +5860,10 @@ static int airo_set_freq(struct net_device *dev, */ static int airo_get_freq(struct net_device *dev, struct iw_request_info *info, - struct iw_freq *fwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_freq *fwrq = &wrqu->freq; struct airo_info *local = dev->ml_priv; StatusRid status_rid; /* Card status info */ int ch; @@ -5890,9 +5893,10 @@ static int airo_get_freq(struct net_device *dev, */ static int airo_set_essid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->essid; struct airo_info *local = dev->ml_priv; SsidRid SSID_rid; /* SSIDs */ @@ -5935,9 +5939,10 @@ static int airo_set_essid(struct net_device *dev, */ static int airo_get_essid(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->essid; struct airo_info *local = dev->ml_priv; StatusRid status_rid; /* Card status info */ @@ -5963,9 +5968,10 @@ static int airo_get_essid(struct net_device *dev, */ static int airo_set_wap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *awrq, + union iwreq_data *wrqu, char *extra) { + struct sockaddr *awrq = &wrqu->ap_addr; struct airo_info *local = dev->ml_priv; Cmd cmd; Resp rsp; @@ -5998,9 +6004,10 @@ static int airo_set_wap(struct net_device *dev, */ static int airo_get_wap(struct net_device *dev, struct iw_request_info *info, - struct sockaddr *awrq, + union iwreq_data *wrqu, char *extra) { + struct sockaddr *awrq = &wrqu->ap_addr; struct airo_info *local = dev->ml_priv; StatusRid status_rid; /* Card status info */ @@ -6019,9 +6026,10 @@ static int airo_get_wap(struct net_device *dev, */ static int airo_set_nick(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->data; struct airo_info *local = dev->ml_priv; /* Check the size of the string */ @@ -6042,9 +6050,10 @@ static int airo_set_nick(struct net_device *dev, */ static int airo_get_nick(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->data; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -6061,9 +6070,10 @@ static int airo_get_nick(struct net_device *dev, */ static int airo_set_rate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->bitrate; struct airo_info *local = dev->ml_priv; CapabilityRid cap_rid; /* Card capability info */ u8 brate = 0; @@ -6131,9 +6141,10 @@ static int airo_set_rate(struct net_device *dev, */ static int airo_get_rate(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->bitrate; struct airo_info *local = dev->ml_priv; StatusRid status_rid; /* Card status info */ @@ -6153,9 +6164,10 @@ static int airo_get_rate(struct net_device *dev, */ static int airo_set_rts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->rts; struct airo_info *local = dev->ml_priv; int rthr = vwrq->value; @@ -6177,9 +6189,10 @@ static int airo_set_rts(struct net_device *dev, */ static int airo_get_rts(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->rts; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -6196,9 +6209,9 @@ static int airo_get_rts(struct net_device *dev, */ static int airo_set_frag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, - char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->frag; struct airo_info *local = dev->ml_priv; int fthr = vwrq->value; @@ -6221,9 +6234,10 @@ static int airo_set_frag(struct net_device *dev, */ static int airo_get_frag(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->frag; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -6240,7 +6254,7 @@ static int airo_get_frag(struct net_device *dev, */ static int airo_set_mode(struct net_device *dev, struct iw_request_info *info, - __u32 *uwrq, + union iwreq_data *uwrq, char *extra) { struct airo_info *local = dev->ml_priv; @@ -6250,7 +6264,7 @@ static int airo_set_mode(struct net_device *dev, if (sniffing_mode(local)) reset = 1; - switch(*uwrq) { + switch(uwrq->mode) { case IW_MODE_ADHOC: local->config.opmode &= ~MODE_CFG_MASK; local->config.opmode |= MODE_STA_IBSS; @@ -6303,7 +6317,7 @@ static int airo_set_mode(struct net_device *dev, */ static int airo_get_mode(struct net_device *dev, struct iw_request_info *info, - __u32 *uwrq, + union iwreq_data *uwrq, char *extra) { struct airo_info *local = dev->ml_priv; @@ -6312,16 +6326,16 @@ static int airo_get_mode(struct net_device *dev, /* If not managed, assume it's ad-hoc */ switch (local->config.opmode & MODE_CFG_MASK) { case MODE_STA_ESS: - *uwrq = IW_MODE_INFRA; + uwrq->mode = IW_MODE_INFRA; break; case MODE_AP: - *uwrq = IW_MODE_MASTER; + uwrq->mode = IW_MODE_MASTER; break; case MODE_AP_RPTR: - *uwrq = IW_MODE_REPEAT; + uwrq->mode = IW_MODE_REPEAT; break; default: - *uwrq = IW_MODE_ADHOC; + uwrq->mode = IW_MODE_ADHOC; } return 0; @@ -6338,9 +6352,10 @@ static inline int valid_index(struct airo_info *ai, int index) */ static int airo_set_encode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->encoding; struct airo_info *local = dev->ml_priv; int perm = (dwrq->flags & IW_ENCODE_TEMP ? 0 : 1); __le16 currentAuthType = local->config.authType; @@ -6437,9 +6452,10 @@ static int airo_set_encode(struct net_device *dev, */ static int airo_get_encode(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->encoding; struct airo_info *local = dev->ml_priv; int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; int wep_key_len; @@ -6784,9 +6800,10 @@ static int airo_get_auth(struct net_device *dev, */ static int airo_set_txpow(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->txpower; struct airo_info *local = dev->ml_priv; CapabilityRid cap_rid; /* Card capability info */ int i; @@ -6821,9 +6838,10 @@ static int airo_set_txpow(struct net_device *dev, */ static int airo_get_txpow(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->txpower; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -6841,9 +6859,10 @@ static int airo_get_txpow(struct net_device *dev, */ static int airo_set_retry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->retry; struct airo_info *local = dev->ml_priv; int rc = -EINVAL; @@ -6879,9 +6898,10 @@ static int airo_set_retry(struct net_device *dev, */ static int airo_get_retry(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->retry; struct airo_info *local = dev->ml_priv; vwrq->disabled = 0; /* Can't be disabled */ @@ -6910,9 +6930,10 @@ static int airo_get_retry(struct net_device *dev, */ static int airo_get_range(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->data; struct airo_info *local = dev->ml_priv; struct iw_range *range = (struct iw_range *) extra; CapabilityRid cap_rid; /* Card capability info */ @@ -7036,9 +7057,9 @@ static int airo_get_range(struct net_device *dev, */ static int airo_set_power(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, - char *extra) + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->power; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -7094,9 +7115,10 @@ static int airo_set_power(struct net_device *dev, */ static int airo_get_power(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->power; struct airo_info *local = dev->ml_priv; __le16 mode; @@ -7125,9 +7147,10 @@ static int airo_get_power(struct net_device *dev, */ static int airo_set_sens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->sens; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -7144,9 +7167,10 @@ static int airo_set_sens(struct net_device *dev, */ static int airo_get_sens(struct net_device *dev, struct iw_request_info *info, - struct iw_param *vwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_param *vwrq = &wrqu->sens; struct airo_info *local = dev->ml_priv; readConfigRid(local, 1); @@ -7164,9 +7188,10 @@ static int airo_get_sens(struct net_device *dev, */ static int airo_get_aplist(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->data; struct airo_info *local = dev->ml_priv; struct sockaddr *address = (struct sockaddr *) extra; struct iw_quality *qual; @@ -7242,7 +7267,7 @@ static int airo_get_aplist(struct net_device *dev, */ static int airo_set_scan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { struct airo_info *ai = dev->ml_priv; @@ -7473,9 +7498,10 @@ static inline char *airo_translate_scan(struct net_device *dev, */ static int airo_get_scan(struct net_device *dev, struct iw_request_info *info, - struct iw_point *dwrq, + union iwreq_data *wrqu, char *extra) { + struct iw_point *dwrq = &wrqu->data; struct airo_info *ai = dev->ml_priv; BSSListElement *net; int err = 0; @@ -7517,7 +7543,7 @@ static int airo_get_scan(struct net_device *dev, */ static int airo_config_commit(struct net_device *dev, struct iw_request_info *info, /* NULL */ - void *zwrq, /* NULL */ + union iwreq_data *wrqu, /* NULL */ char *extra) /* NULL */ { struct airo_info *local = dev->ml_priv; @@ -7567,61 +7593,46 @@ static const struct iw_priv_args airo_private_args[] = { static const iw_handler airo_handler[] = { - (iw_handler) airo_config_commit, /* SIOCSIWCOMMIT */ - (iw_handler) airo_get_name, /* SIOCGIWNAME */ - (iw_handler) NULL, /* SIOCSIWNWID */ - (iw_handler) NULL, /* SIOCGIWNWID */ - (iw_handler) airo_set_freq, /* SIOCSIWFREQ */ - (iw_handler) airo_get_freq, /* SIOCGIWFREQ */ - (iw_handler) airo_set_mode, /* SIOCSIWMODE */ - (iw_handler) airo_get_mode, /* SIOCGIWMODE */ - (iw_handler) airo_set_sens, /* SIOCSIWSENS */ - (iw_handler) airo_get_sens, /* SIOCGIWSENS */ - (iw_handler) NULL, /* SIOCSIWRANGE */ - (iw_handler) airo_get_range, /* SIOCGIWRANGE */ - (iw_handler) NULL, /* SIOCSIWPRIV */ - (iw_handler) NULL, /* SIOCGIWPRIV */ - (iw_handler) NULL, /* SIOCSIWSTATS */ - (iw_handler) NULL, /* SIOCGIWSTATS */ - iw_handler_set_spy, /* SIOCSIWSPY */ - iw_handler_get_spy, /* SIOCGIWSPY */ - iw_handler_set_thrspy, /* SIOCSIWTHRSPY */ - iw_handler_get_thrspy, /* SIOCGIWTHRSPY */ - (iw_handler) airo_set_wap, /* SIOCSIWAP */ - (iw_handler) airo_get_wap, /* SIOCGIWAP */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) airo_get_aplist, /* SIOCGIWAPLIST */ - (iw_handler) airo_set_scan, /* SIOCSIWSCAN */ - (iw_handler) airo_get_scan, /* SIOCGIWSCAN */ - (iw_handler) airo_set_essid, /* SIOCSIWESSID */ - (iw_handler) airo_get_essid, /* SIOCGIWESSID */ - (iw_handler) airo_set_nick, /* SIOCSIWNICKN */ - (iw_handler) airo_get_nick, /* SIOCGIWNICKN */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) airo_set_rate, /* SIOCSIWRATE */ - (iw_handler) airo_get_rate, /* SIOCGIWRATE */ - (iw_handler) airo_set_rts, /* SIOCSIWRTS */ - (iw_handler) airo_get_rts, /* SIOCGIWRTS */ - (iw_handler) airo_set_frag, /* SIOCSIWFRAG */ - (iw_handler) airo_get_frag, /* SIOCGIWFRAG */ - (iw_handler) airo_set_txpow, /* SIOCSIWTXPOW */ - (iw_handler) airo_get_txpow, /* SIOCGIWTXPOW */ - (iw_handler) airo_set_retry, /* SIOCSIWRETRY */ - (iw_handler) airo_get_retry, /* SIOCGIWRETRY */ - (iw_handler) airo_set_encode, /* SIOCSIWENCODE */ - (iw_handler) airo_get_encode, /* SIOCGIWENCODE */ - (iw_handler) airo_set_power, /* SIOCSIWPOWER */ - (iw_handler) airo_get_power, /* SIOCGIWPOWER */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* -- hole -- */ - (iw_handler) NULL, /* SIOCSIWGENIE */ - (iw_handler) NULL, /* SIOCGIWGENIE */ - (iw_handler) airo_set_auth, /* SIOCSIWAUTH */ - (iw_handler) airo_get_auth, /* SIOCGIWAUTH */ - (iw_handler) airo_set_encodeext, /* SIOCSIWENCODEEXT */ - (iw_handler) airo_get_encodeext, /* SIOCGIWENCODEEXT */ - (iw_handler) NULL, /* SIOCSIWPMKSA */ + IW_HANDLER(SIOCSIWCOMMIT, airo_config_commit), + IW_HANDLER(SIOCGIWNAME, airo_get_name), + IW_HANDLER(SIOCSIWFREQ, airo_set_freq), + IW_HANDLER(SIOCGIWFREQ, airo_get_freq), + IW_HANDLER(SIOCSIWMODE, airo_set_mode), + IW_HANDLER(SIOCGIWMODE, airo_get_mode), + IW_HANDLER(SIOCSIWSENS, airo_set_sens), + IW_HANDLER(SIOCGIWSENS, airo_get_sens), + IW_HANDLER(SIOCGIWRANGE, airo_get_range), + IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy), + IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy), + IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy), + IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy), + IW_HANDLER(SIOCSIWAP, airo_set_wap), + IW_HANDLER(SIOCGIWAP, airo_get_wap), + IW_HANDLER(SIOCGIWAPLIST, airo_get_aplist), + IW_HANDLER(SIOCSIWSCAN, airo_set_scan), + IW_HANDLER(SIOCGIWSCAN, airo_get_scan), + IW_HANDLER(SIOCSIWESSID, airo_set_essid), + IW_HANDLER(SIOCGIWESSID, airo_get_essid), + IW_HANDLER(SIOCSIWNICKN, airo_set_nick), + IW_HANDLER(SIOCGIWNICKN, airo_get_nick), + IW_HANDLER(SIOCSIWRATE, airo_set_rate), + IW_HANDLER(SIOCGIWRATE, airo_get_rate), + IW_HANDLER(SIOCSIWRTS, airo_set_rts), + IW_HANDLER(SIOCGIWRTS, airo_get_rts), + IW_HANDLER(SIOCSIWFRAG, airo_set_frag), + IW_HANDLER(SIOCGIWFRAG, airo_get_frag), + IW_HANDLER(SIOCSIWTXPOW, airo_set_txpow), + IW_HANDLER(SIOCGIWTXPOW, airo_get_txpow), + IW_HANDLER(SIOCSIWRETRY, airo_set_retry), + IW_HANDLER(SIOCGIWRETRY, airo_get_retry), + IW_HANDLER(SIOCSIWENCODE, airo_set_encode), + IW_HANDLER(SIOCGIWENCODE, airo_get_encode), + IW_HANDLER(SIOCSIWPOWER, airo_set_power), + IW_HANDLER(SIOCGIWPOWER, airo_get_power), + IW_HANDLER(SIOCSIWAUTH, airo_set_auth), + IW_HANDLER(SIOCGIWAUTH, airo_get_auth), + IW_HANDLER(SIOCSIWENCODEEXT, airo_set_encodeext), + IW_HANDLER(SIOCGIWENCODEEXT, airo_get_encodeext), }; /* Note : don't describe AIROIDIFC and AIROOLDIDIFC in here.