On Mon, 2008-09-29 at 13:52 +0200, Jiri Slaby wrote:
> --- a/net/wireless/nl80211.c
> +++ b/net/wireless/nl80211.c
> @@ -246,16 +246,26 @@ static int nl80211_get_wiphy(struct sk_buff *skb, struct
> genl_info *info)
> {
> struct sk_buff *msg;
> struct cfg80211_registered_device *dev;
> + size_t bufsize = NLMSG_GOODSIZE;
> + unsigned int tries = 0;
> + int ret;
>
> dev = cfg80211_get_dev_from_info(info);
> if (IS_ERR(dev))
> return PTR_ERR(dev);
>
> - msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
> +retry:
> + msg = nlmsg_new(bufsize, GFP_KERNEL);
> if (!msg)
> goto out_err;
>
> - if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
> + ret = nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev);
> + if (ret == -EMSGSIZE && ++tries < 2) {
> + bufsize *= 2;
> + nlmsg_free(msg);
> + goto retry;
> + }
> + if (ret < 0)
> goto out_free;
>
> cfg80211_put_dev(dev);
>
Works for me. Not the greatest way to do this I guess, but hey, it
works.
johannes
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