diff mbox

[4/4] nl80211: Join and Leave handling for OCB mode

Message ID 1410445822-6559-5-git-send-email-rostislav.lisovy@fel.cvut.cz (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Rostislav Lisovy Sept. 11, 2014, 2:30 p.m. UTC
Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
---
 include/uapi/linux/nl80211.h |  8 ++++++++
 net/wireless/nl80211.c       | 47 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)

Comments

Johannes Berg Oct. 9, 2014, 8:31 a.m. UTC | #1
On Thu, 2014-09-11 at 16:30 +0200, Rostislav Lisovy wrote:
> Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>

same comment about commit log here - also this patch should either go
first in the series, or just be squashed with the cfg80211 patch,
there's no real need to distinguish between the two. I guess it can't be
first, so best just squash it.

I think you can also squash patches 1 and 2, since 2 is so small.

> ---
>  include/uapi/linux/nl80211.h |  8 ++++++++
>  net/wireless/nl80211.c       | 47 ++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 55 insertions(+)
> 
> diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
> index cdf9ba4..4b39455 100644
> --- a/include/uapi/linux/nl80211.h
> +++ b/include/uapi/linux/nl80211.h
> @@ -544,6 +544,11 @@
>   * @NL80211_CMD_LEAVE_MESH: Leave the mesh network -- no special arguments, the
>   *	network is determined by the network interface.
>   *
> + * @NL80211_CMD_JOIN_OCB: Join the OCB network. The center frequency and
> + *	bandwidth of a channel must be given.
> + * @NL80211_CMD_LEAVE_OCB: Leave the OCB network -- no special arguments, the
> + *	network is determined by the network interface.
> + *
>   * @NL80211_CMD_UNPROT_DEAUTHENTICATE: Unprotected deauthentication frame
>   *	notification. This event is used to indicate that an unprotected
>   *	deauthentication frame was dropped when MFP is in use.
> @@ -833,6 +838,9 @@ enum nl80211_commands {
>  	NL80211_CMD_JOIN_MESH,
>  	NL80211_CMD_LEAVE_MESH,
>  
> +	NL80211_CMD_JOIN_OCB,
> +	NL80211_CMD_LEAVE_OCB,
> +
>  	NL80211_CMD_UNPROT_DEAUTHENTICATE,
>  	NL80211_CMD_UNPROT_DISASSOCIATE,

No no, you really really really can't add anything in the middle of this
enum. The's a comments at the top of it explaining why :)

> diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
> index cf178d2..bfbb54d 100644
> --- a/net/wireless/nl80211.c
> +++ b/net/wireless/nl80211.c
> @@ -1876,6 +1876,7 @@ static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
>  	 * operation to set the monitor channel if possible.
>  	 */
>  	return !wdev ||
> +		wdev->iftype == NL80211_IFTYPE_OCB ||
>  		wdev->iftype == NL80211_IFTYPE_AP ||
>  		wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
>  		wdev->iftype == NL80211_IFTYPE_MONITOR ||

I don't think this is right - join() handles the channel setting.

> @@ -2307,6 +2308,8 @@ static int nl80211_send_chandef(struct sk_buff *msg,
>  			chandef->chan->center_freq))
>  		return -ENOBUFS;
>  	switch (chandef->width) {
> +	case NL80211_CHAN_WIDTH_5:
> +	case NL80211_CHAN_WIDTH_10:

This is also wrong, just like the cfg80211.h change in the other patch,
since the NL80211_ATTR_WIPHY_CHANNEL_TYPE cannot encode 5/10 MHz.

You need to remove both changes.

> +static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
> +{
> +	struct cfg80211_registered_device *rdev = info->user_ptr[0];
> +	struct net_device *dev = info->user_ptr[1];
> +	struct ocb_setup setup;
> +	int err;
> +
> +	/* start with default */
> +	memset(&setup, 0x0, sizeof(setup));

struct ocb_setup setup = {};

Would be an easier way to generate the same code. IMHO no comment is
needed.

johannes

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diff mbox

Patch

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index cdf9ba4..4b39455 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -544,6 +544,11 @@ 
  * @NL80211_CMD_LEAVE_MESH: Leave the mesh network -- no special arguments, the
  *	network is determined by the network interface.
  *
+ * @NL80211_CMD_JOIN_OCB: Join the OCB network. The center frequency and
+ *	bandwidth of a channel must be given.
+ * @NL80211_CMD_LEAVE_OCB: Leave the OCB network -- no special arguments, the
+ *	network is determined by the network interface.
+ *
  * @NL80211_CMD_UNPROT_DEAUTHENTICATE: Unprotected deauthentication frame
  *	notification. This event is used to indicate that an unprotected
  *	deauthentication frame was dropped when MFP is in use.
@@ -833,6 +838,9 @@  enum nl80211_commands {
 	NL80211_CMD_JOIN_MESH,
 	NL80211_CMD_LEAVE_MESH,
 
+	NL80211_CMD_JOIN_OCB,
+	NL80211_CMD_LEAVE_OCB,
+
 	NL80211_CMD_UNPROT_DEAUTHENTICATE,
 	NL80211_CMD_UNPROT_DISASSOCIATE,
 
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index cf178d2..bfbb54d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1876,6 +1876,7 @@  static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
 	 * operation to set the monitor channel if possible.
 	 */
 	return !wdev ||
+		wdev->iftype == NL80211_IFTYPE_OCB ||
 		wdev->iftype == NL80211_IFTYPE_AP ||
 		wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
 		wdev->iftype == NL80211_IFTYPE_MONITOR ||
@@ -2307,6 +2308,8 @@  static int nl80211_send_chandef(struct sk_buff *msg,
 			chandef->chan->center_freq))
 		return -ENOBUFS;
 	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
 	case NL80211_CHAN_WIDTH_20_NOHT:
 	case NL80211_CHAN_WIDTH_20:
 	case NL80211_CHAN_WIDTH_40:
@@ -8118,6 +8121,34 @@  static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
 	return -EINVAL;
 }
 
+static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct ocb_setup setup;
+	int err;
+
+	/* start with default */
+	memset(&setup, 0x0, sizeof(setup));
+
+	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
+		return -EINVAL;
+
+	err = nl80211_parse_chandef(rdev, info, &setup.chandef);
+	if (err)
+		return err;
+
+	return cfg80211_join_ocb(rdev, dev, &setup);
+}
+
+static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+
+	return cfg80211_leave_ocb(rdev, dev);
+}
+
 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -9952,6 +9983,22 @@  static const struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_JOIN_OCB,
+		.doit = nl80211_join_ocb,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL80211_CMD_LEAVE_OCB,
+		.doit = nl80211_leave_ocb,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
 #ifdef CONFIG_PM
 	{
 		.cmd = NL80211_CMD_GET_WOWLAN,