On Thu, Dec 18, 2014 at 3:56 PM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > On Wed, 2014-12-17 at 18:00 +0200, Arik Nemtsov wrote: >> Some network cards (Intel) produce per-channel regdomains and rely on >> cfg80211 to merge rules as needed. This hits the max rules limit and >> fails. > > Maybe we should consider just getting rid of this or bumping it to > something ridiculously large like 1000? Looking at how this is (not) > used, there's no real sense in limiting it. The only possible problem is > the O(n^2) complexity when doing an intersection, but processing a > million combinations is probably not a big deal? In fact, even if that > becomes a problem, we can easily optimise that complexity away by > sorting the rules or so. Then it becomes O(n log n)... Well when someone does NL80211_CMD_GET_REG from usermode, we send the entire regdom in a single message, so 1000 rules may become problematic.. Arik -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
