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add ipsec nat traversal patch
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@678 3c298f89-4303-0410-b956-a3cf2f4a3e73
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140
openwrt/package/linux/kernel-patches/311-ipsec-nat-traversal
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140
openwrt/package/linux/kernel-patches/311-ipsec-nat-traversal
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@ -0,0 +1,140 @@
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packaging/utils/nattpatch 2.4
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--- linux/include/net/sock.h 2002/02/06 15:25:10 1.1
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+++ linux/include/net/sock.h 2002/05/22 12:14:56
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@@ -488,7 +488,13 @@
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} bictcp;
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};
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-
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+#if 1
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+#define UDP_OPT_IN_SOCK 1
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+struct udp_opt {
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+ __u32 esp_in_udp;
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+};
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+#endif
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+
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/*
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* This structure really needs to be cleaned up.
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* Most of it is for TCP, and not used by any of
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@@ -655,6 +661,9 @@
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#if defined(CONFIG_SPX) || defined (CONFIG_SPX_MODULE)
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struct spx_opt af_spx;
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#endif /* CONFIG_SPX */
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+#if 1
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+ struct udp_opt af_udp;
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+#endif
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} tp_pinfo;
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--- linux/net/Config.in.orig Fri Feb 9 14:34:13 2001
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+++ linux/net/Config.in Thu Feb 22 19:40:08 2001
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@@ -88,3 +88,5 @@
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endmenu
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+bool 'IPSEC NAT-Traversal' CONFIG_IPSEC_NAT_TRAVERSAL
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+
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endmenu
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--- linux/net/ipv4/udp.c.1 Wed Jan 28 15:57:05 2004
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+++ linux/net/ipv4/udp.c Wed Jan 28 15:58:56 2004
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@@ -787,6 +787,9 @@
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static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
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{
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+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
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+ struct udp_opt *tp = &(sk->tp_pinfo.af_udp);
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+#endif
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/*
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* Charge it to the socket, dropping if the queue is full.
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*/
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@@ -804,6 +807,40 @@
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}
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#endif
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+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
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+ if (tp->esp_in_udp) {
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+ /*
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+ * Set skb->sk and xmit packet to ipsec_rcv.
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+ *
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+ * If ret != 0, ipsec_rcv refused the packet (not ESPinUDP),
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+ * restore skb->sk and fall back to sock_queue_rcv_skb
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+ */
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+ struct inet_protocol *esp = NULL;
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+
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+#if defined(CONFIG_KLIPS) && !defined(CONFIG_KLIPS_MODULE)
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+ /* optomize only when we know it is statically linked */
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+ extern struct inet_protocol esp_protocol;
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+ esp = &esp_protocol;
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+#else
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+ for (esp = (struct inet_protocol *)inet_protos[IPPROTO_ESP & (MAX_INET_PROTOS - 1)];
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+ (esp) && (esp->protocol != IPPROTO_ESP);
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+ esp = esp->next);
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+#endif
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+
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+ if (esp && esp->handler) {
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+ struct sock *sav_sk = skb->sk;
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+ skb->sk = sk;
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+ if (esp->handler(skb) == 0) {
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+ skb->sk = sav_sk;
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+ /*not sure we might count ESPinUDP as UDP...*/
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+ UDP_INC_STATS_BH(UdpInDatagrams);
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+ return 0;
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+ }
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+ skb->sk = sav_sk;
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+ }
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+ }
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+#endif
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+
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if (sock_queue_rcv_skb(sk,skb)<0) {
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UDP_INC_STATS_BH(UdpInErrors);
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IP_INC_STATS_BH(IpInDiscards);
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@@ -1027,13 +1064,49 @@
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return len;
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}
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+static int udp_setsockopt(struct sock *sk, int level, int optname,
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+ char *optval, int optlen)
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+{
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+ struct udp_opt *tp = &(sk->tp_pinfo.af_udp);
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+ int val;
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+ int err = 0;
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+
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+ if (level != SOL_UDP)
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+ return ip_setsockopt(sk, level, optname, optval, optlen);
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+
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+ if(optlen<sizeof(int))
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+ return -EINVAL;
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+
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+ if (get_user(val, (int *)optval))
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+ return -EFAULT;
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+
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+ lock_sock(sk);
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+
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+ switch(optname) {
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+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
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+#ifndef UDP_ESPINUDP
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+#define UDP_ESPINUDP 100
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+#endif
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+ case UDP_ESPINUDP:
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+ tp->esp_in_udp = val;
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+ break;
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+#endif
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+ default:
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+ err = -ENOPROTOOPT;
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+ break;
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+ }
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+
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+ release_sock(sk);
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+ return err;
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+}
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+
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struct proto udp_prot = {
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name: "UDP",
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close: udp_close,
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connect: udp_connect,
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disconnect: udp_disconnect,
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ioctl: udp_ioctl,
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- setsockopt: ip_setsockopt,
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+ setsockopt: udp_setsockopt,
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getsockopt: ip_getsockopt,
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sendmsg: udp_sendmsg,
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recvmsg: udp_recvmsg,
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@ -1,5 +1,5 @@
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#
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# Automatically generated by make menuconfig: don't edit
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# Automatically generated make config: don't edit
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#
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CONFIG_MIPS=y
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CONFIG_MIPS32=y
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@ -181,6 +181,10 @@ CONFIG_MTD_PARTITIONS=y
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# CONFIG_MTD_CONCAT is not set
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# CONFIG_MTD_REDBOOT_PARTS is not set
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# CONFIG_MTD_CMDLINE_PARTS is not set
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#
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# User Modules And Translation Layers
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#
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CONFIG_MTD_CHAR=y
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CONFIG_MTD_BLOCK=y
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# CONFIG_FTL is not set
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@ -246,6 +250,10 @@ CONFIG_MTD_BCM947XX=y
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# CONFIG_MTD_SLRAM is not set
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# CONFIG_MTD_MTDRAM is not set
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# CONFIG_MTD_BLKMTD is not set
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#
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# Disk-On-Chip Device Drivers
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#
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# CONFIG_MTD_DOC1000 is not set
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# CONFIG_MTD_DOC2000 is not set
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# CONFIG_MTD_DOC2001 is not set
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@ -432,6 +440,10 @@ CONFIG_IP6_NF_TARGET_MARK=m
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# CONFIG_IP_SCTP is not set
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# CONFIG_ATM is not set
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CONFIG_VLAN_8021Q=y
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#
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#
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#
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# CONFIG_IPX is not set
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# CONFIG_ATALK is not set
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# CONFIG_DECNET is not set
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@ -498,6 +510,7 @@ CONFIG_NET_CLS_POLICE=y
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# Network testing
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#
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# CONFIG_NET_PKTGEN is not set
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CONFIG_IPSEC_NAT_TRAVERSAL=y
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#
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# Telephony Support
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@ -516,12 +529,20 @@ CONFIG_NET_CLS_POLICE=y
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# SCSI support
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#
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CONFIG_SCSI=m
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#
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# SCSI support type (disk, tape, CD-ROM)
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#
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CONFIG_BLK_DEV_SD=m
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CONFIG_SD_EXTRA_DEVS=5
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# CONFIG_CHR_DEV_ST is not set
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# CONFIG_CHR_DEV_OSST is not set
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# CONFIG_BLK_DEV_SR is not set
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CONFIG_CHR_DEV_SG=m
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#
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# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
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#
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# CONFIG_SCSI_DEBUG_QUEUES is not set
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# CONFIG_SCSI_MULTI_LUN is not set
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# CONFIG_SCSI_CONSTANTS is not set
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@ -741,6 +762,10 @@ CONFIG_NET_RADIO=y
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# CONFIG_PLX_HERMES is not set
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# CONFIG_TMD_HERMES is not set
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# CONFIG_PCI_HERMES is not set
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#
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# Prism54 PCI/PCMCIA GT/Duette Driver - 802.11(a/b/g)
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#
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# CONFIG_PRISM54 is not set
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CONFIG_NET_WIRELESS=y
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@ -812,6 +837,14 @@ CONFIG_PRINTER=m
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# Joysticks
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#
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# CONFIG_INPUT_GAMEPORT is not set
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#
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# Input core support is needed for gameports
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#
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#
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# Input core support is needed for joysticks
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#
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# CONFIG_QIC02_TAPE is not set
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# CONFIG_IPMI_HANDLER is not set
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# CONFIG_IPMI_PANIC_EVENT is not set
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@ -1041,12 +1074,24 @@ CONFIG_NLS_DEFAULT="iso8859-1"
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#
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CONFIG_USB=m
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# CONFIG_USB_DEBUG is not set
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#
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# Miscellaneous USB options
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#
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CONFIG_USB_DEVICEFS=y
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# CONFIG_USB_BANDWIDTH is not set
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#
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# USB Host Controller Drivers
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#
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CONFIG_USB_EHCI_HCD=m
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# CONFIG_USB_UHCI is not set
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CONFIG_USB_UHCI_ALT=m
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CONFIG_USB_OHCI=m
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#
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# USB Device Class drivers
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#
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# CONFIG_USB_AUDIO is not set
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# CONFIG_USB_EMI26 is not set
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# CONFIG_USB_BLUETOOTH is not set
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@ -1063,7 +1108,15 @@ CONFIG_USB_STORAGE_SDDR55=y
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CONFIG_USB_STORAGE_JUMPSHOT=y
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# CONFIG_USB_ACM is not set
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CONFIG_USB_PRINTER=m
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#
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# USB Human Interface Devices (HID)
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#
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# CONFIG_USB_HID is not set
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#
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# Input core support is needed for USB HID input layer or HIDBP support
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#
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# CONFIG_USB_HIDINPUT is not set
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# CONFIG_USB_HIDDEV is not set
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# CONFIG_USB_KBD is not set
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@ -1072,23 +1125,47 @@ CONFIG_USB_PRINTER=m
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# CONFIG_USB_WACOM is not set
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# CONFIG_USB_KBTAB is not set
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# CONFIG_USB_POWERMATE is not set
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#
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# USB Imaging devices
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#
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# CONFIG_USB_DC2XX is not set
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# CONFIG_USB_MDC800 is not set
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# CONFIG_USB_SCANNER is not set
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# CONFIG_USB_MICROTEK is not set
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# CONFIG_USB_HPUSBSCSI is not set
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#
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# USB Multimedia devices
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#
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#
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# Video4Linux support is needed for USB Multimedia device support
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#
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#
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# USB Network adaptors
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#
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# CONFIG_USB_PEGASUS is not set
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# CONFIG_USB_RTL8150 is not set
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# CONFIG_USB_KAWETH is not set
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# CONFIG_USB_CATC is not set
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# CONFIG_USB_CDCETHER is not set
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# CONFIG_USB_USBNET is not set
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#
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# USB port drivers
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#
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# CONFIG_USB_USS720 is not set
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#
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# USB Serial Converter support
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#
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# CONFIG_USB_SERIAL is not set
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#
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# USB Miscellaneous drivers
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#
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# CONFIG_USB_RIO500 is not set
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# CONFIG_USB_AUERSWALD is not set
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# CONFIG_USB_TIGL is not set
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