From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [RFC Patch] net: reserve ports for applications using fixed port numbers Date: Thu, 04 Feb 2010 10:21:13 -0800 (PST) Message-ID: <20100204.102113.267879565.davem@davemloft.net> References: <201002041444.01897.opurdila@ixiacom.com> <20100204.094110.64247447.davem@davemloft.net> <201002042015.51092.opurdila@ixiacom.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: amwang-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org, linux-sctp-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org Return-path: In-Reply-To: <201002042015.51092.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org From: Octavian Purdila Date: Thu, 4 Feb 2010 20:15:51 +0200 > int inet_is_reserved_local_port(int port) > { > if (test_bit(port, reserved_ports)) > return 1; > return 0; > } > > In theory it might be slower because of the reserved_ports bitmap will have a > larger memory footprint than just a min/max, especially with random port > allocation. But is this an issue in practice? No need to speculate, some simple benchmarks would confirm or deny this. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html