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[UDP]: Revert udplite and code split.

Browse source 
This reverts commit db1ed684f6 ("[IPV6]
UDP: Rename IPv6 UDP files."), commit
8be8af8fa4 ("[IPV4] UDP: Move
IPv4-specific bits to other file.") and commit
e898d4db27 ("[UDP]: Allow users to
configure UDP-Lite.").

First, udplite is of such small cost, and it is a core protocol just
like TCP and normal UDP are.

We spent enormous amounts of effort to make udplite share as much code
with core UDP as possible.  All of that work is less valuable if we're
just going to slap a config option on udplite support.

It is also causing build failures, as reported on linux-next, showing
that the changeset was not tested very well.  In fact, this is the
second build failure resulting from the udplite change.

Finally, the config options provided was a bool, instead of a modular
option.  Meaning the udplite code does not even get build tested
by allmodconfig builds, and furthermore the user is not presented
with a reasonable modular build option which is particularly needed
by distribution vendors.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-03-06 16:22:02 -08:00
parent ba0fa45994
commit db8dac20d5
17 changed files with 1101 additions and 1222 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
include/linux/udp.h
View file

@ -70,10 +70,8 @@ struct udp_sock {
#define UDPLITE_BIT 0x1 /* set by udplite proto init function */
#define UDPLITE_SEND_CC 0x2 /* set via udplite setsockopt */
#define UDPLITE_RECV_CC 0x4 /* set via udplite setsocktopt */
#ifdef CONFIG_IP_UDPLITE
__u8 pcflag; /* marks socket as UDP-Lite if > 0 */
__u8 unused[3];
#endif
/*
* For encapsulation sockets.
*/
@ -85,15 +83,7 @@ static inline struct udp_sock *udp_sk(const struct sock *sk)
return (struct udp_sock *)sk;
}
#ifdef CONFIG_IP_UDPLITE
#define IS_UDPLITE(__sk) (udp_sk(__sk)->pcflag)
#define IS_PROTO_UDPLITE(__proto) ((__proto) == IPPROTO_UDPLITE)
#define IS_SOL_UDPFAMILY(level) ((level) == SOL_UDP || (level) == SOL_UDPLITE)
#else
#define IS_UDPLITE(__sk) 0
#define IS_PROTO_UDPLITE(__proto) 0
#define IS_SOL_UDPFAMILY(level) ((level) == SOL_UDP)
#endif
#endif

5
include/net/ipv6.h
View file

@ -599,13 +599,8 @@ extern int tcp6_proc_init(void);
extern void tcp6_proc_exit(void);
extern int udp6_proc_init(void);
extern void udp6_proc_exit(void);
#ifdef CONFIG_IP_UDPLITE
extern int udplite6_proc_init(void);
extern void udplite6_proc_exit(void);
#else
static inline int udplite6_proc_init(void) { return 0; }
static inline void udplite6_proc_exit(void) { }
#endif
extern int ipv6_misc_proc_init(void);
extern void ipv6_misc_proc_exit(void);
extern int snmp6_register_dev(struct inet6_dev *idev);

5
include/net/transp_v6.h
View file

@ -27,13 +27,8 @@ extern int rawv6_init(void);
extern void rawv6_exit(void);
extern int udpv6_init(void);
extern void udpv6_exit(void);
#ifdef CONFIG_IP_UDPLITE
extern int udplitev6_init(void);
extern void udplitev6_exit(void);
#else
static inline int udplitev6_init(void) { return 0; }
static inline void udplitev6_exit(void) { }
#endif
extern int tcpv6_init(void);
extern void tcpv6_exit(void);

9
include/net/udplite.h
View file

@ -25,9 +25,7 @@ static __inline__ int udplite_getfrag(void *from, char *to, int offset,
/* Designate sk as UDP-Lite socket */
static inline int udplite_sk_init(struct sock *sk)
{
#ifdef CONFIG_IP_UDPLITE
udp_sk(sk)->pcflag = UDPLITE_BIT;
#endif
return 0;
}
@ -71,7 +69,7 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
{
int cscov = up->len;
#ifdef CONFIG_IP_UDPLITE
/*
* Sender has set `partial coverage' option on UDP-Lite socket
*/
@ -95,15 +93,13 @@ static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
* illegal, we fall back to the defaults here.
*/
}
#endif
return cscov;
}
static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
{
__wsum csum = 0;
#ifdef CONFIG_IP_UDPLITE
int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb));
__wsum csum = 0;
skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
@ -116,7 +112,6 @@ static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
if ((cscov -= len) <= 0)
break;
}
#endif
return csum;
}

10
net/ipv4/Kconfig
View file

@ -632,15 +632,5 @@ config TCP_MD5SIG
If unsure, say N.
config IP_UDPLITE
bool "IP: UDP-Lite Protocol (RFC 3828)"
default n
---help---
UDP-Lite (RFC 3828) is a UDP-like protocol with variable-length
checksum. Read <file:Documentation/networking/udplite.txt> for
details.
If unsure, say N.
source "net/ipv4/ipvs/Kconfig"

3
net/ipv4/Makefile
View file

@ -8,7 +8,7 @@ obj-y := route.o inetpeer.o protocol.o \
inet_timewait_sock.o inet_connection_sock.o \
tcp.o tcp_input.o tcp_output.o tcp_timer.o tcp_ipv4.o \
tcp_minisocks.o tcp_cong.o \
datagram.o raw.o udp.o udp_ipv4.o \
datagram.o raw.o udp.o udplite.o \
arp.o icmp.o devinet.o af_inet.o igmp.o \
fib_frontend.o fib_semantics.o \
inet_fragment.o
@ -49,7 +49,6 @@ obj-$(CONFIG_TCP_CONG_SCALABLE) += tcp_scalable.o
obj-$(CONFIG_TCP_CONG_LP) += tcp_lp.o
obj-$(CONFIG_TCP_CONG_YEAH) += tcp_yeah.o
obj-$(CONFIG_TCP_CONG_ILLINOIS) += tcp_illinois.o
obj-$(CONFIG_IP_UDPLITE) += udplite_ipv4.o
obj-$(CONFIG_NETLABEL) += cipso_ipv4.o
obj-$(CONFIG_XFRM) += xfrm4_policy.o xfrm4_state.o xfrm4_input.o \

7
net/ipv4/af_inet.c
View file

@ -1317,18 +1317,15 @@ static int __init init_ipv4_mibs(void)
if (snmp_mib_init((void **)udp_statistics,
sizeof(struct udp_mib)) < 0)
goto err_udp_mib;
#ifdef CONFIG_IP_UDPLITE
if (snmp_mib_init((void **)udplite_statistics,
sizeof(struct udp_mib)) < 0)
goto err_udplite_mib;
#endif
tcp_mib_init();
return 0;
#ifdef CONFIG_IP_UDPLITE
err_udplite_mib:
#endif
snmp_mib_free((void **)udp_statistics);
err_udp_mib:
snmp_mib_free((void **)tcp_statistics);
@ -1426,10 +1423,8 @@ static int __init inet_init(void)
/* Setup UDP memory threshold */
udp_init();
#ifdef CONFIG_IP_UDPLITE
/* Add UDP-Lite (RFC 3828) */
udplite4_register();
#endif
/*
* Set the ICMP layer up

5
net/ipv4/proc.c
View file

@ -59,9 +59,7 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
atomic_read(&tcp_memory_allocated));
seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse_get(&udp_prot),
atomic_read(&udp_memory_allocated));
#ifdef CONFIG_IP_UDPLITE
seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse_get(&udplite_prot));
#endif
seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse_get(&raw_prot));
seq_printf(seq, "FRAG: inuse %d memory %d\n",
ip_frag_nqueues(&init_net), ip_frag_mem(&init_net));
@ -351,7 +349,6 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
snmp_fold_field((void **)udp_statistics,
snmp4_udp_list[i].entry));
#ifdef CONFIG_IP_UDPLITE
/* the UDP and UDP-Lite MIBs are the same */
seq_puts(seq, "\nUdpLite:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
@ -362,7 +359,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, " %lu",
snmp_fold_field((void **)udplite_statistics,
snmp4_udp_list[i].entry));
#endif
seq_putc(seq, '\n');
return 0;
}

1090
net/ipv4/udp.c
View file

File diff suppressed because it is too large Load diff

1134
net/ipv4/udp_ipv4.c
View file

File diff suppressed because it is too large Load diff

0
net/ipv4/udplite_ipv4.c → net/ipv4/udplite.c
View file

3
net/ipv6/Makefile
View file

@ -6,7 +6,7 @@ obj-$(CONFIG_IPV6) += ipv6.o
ipv6-objs := af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
addrlabel.o \
route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp_ipv6.o \
route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o udplite.o \
raw.o protocol.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o
@ -17,7 +17,6 @@ ipv6-$(CONFIG_NETFILTER) += netfilter.o
ipv6-$(CONFIG_IPV6_MULTIPLE_TABLES) += fib6_rules.o
ipv6-$(CONFIG_PROC_FS) += proc.o
ipv6-$(CONFIG_SYN_COOKIES) += syncookies.o
ipv6-$(CONFIG_IP_UDPLITE) += udplite_ipv6.o
ipv6-objs += $(ipv6-y)

14
net/ipv6/af_inet6.c
View file

@ -813,16 +813,12 @@ static int __init init_ipv6_mibs(void)
goto err_icmpmsg_mib;
if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0)
goto err_udp_mib;
#ifdef CONFIG_IP_UDPLITE
if (snmp_mib_init((void **)udplite_stats_in6,
sizeof (struct udp_mib)) < 0)
goto err_udplite_mib;
#endif
return 0;
#ifdef CONFIG_IP_UDPLITE
err_udplite_mib:
#endif
snmp_mib_free((void **)udp_stats_in6);
err_udp_mib:
snmp_mib_free((void **)icmpv6msg_statistics);
@ -841,9 +837,7 @@ static void cleanup_ipv6_mibs(void)
snmp_mib_free((void **)icmpv6_statistics);
snmp_mib_free((void **)icmpv6msg_statistics);
snmp_mib_free((void **)udp_stats_in6);
#ifdef CONFIG_IP_UDPLITE
snmp_mib_free((void **)udplite_stats_in6);
#endif
}
static int inet6_net_init(struct net *net)
@ -888,11 +882,9 @@ static int __init inet6_init(void)
if (err)
goto out_unregister_tcp_proto;
#ifdef CONFIG_IP_UDPLITE
err = proto_register(&udplitev6_prot, 1);
if (err)
goto out_unregister_udp_proto;
#endif
err = proto_register(&rawv6_prot, 1);
if (err)
@ -1063,10 +1055,8 @@ out_sock_register_fail:
out_unregister_raw_proto:
proto_unregister(&rawv6_prot);
out_unregister_udplite_proto:
#ifdef CONFIG_IP_UDPLITE
proto_unregister(&udplitev6_prot);
out_unregister_udp_proto:
#endif
proto_unregister(&udpv6_prot);
out_unregister_tcp_proto:
proto_unregister(&tcpv6_prot);
@ -1085,9 +1075,7 @@ static void __exit inet6_exit(void)
ipv6_sysctl_unregister();
#endif
udpv6_exit();
#ifdef CONFIG_IP_UDPLITE
udplitev6_exit();
#endif
tcpv6_exit();
/* Cleanup code parts. */
@ -1117,9 +1105,7 @@ static void __exit inet6_exit(void)
unregister_pernet_subsys(&inet6_net_ops);
cleanup_ipv6_mibs();
proto_unregister(&rawv6_prot);
#ifdef CONFIG_IP_UDPLITE
proto_unregister(&udplitev6_prot);
#endif
proto_unregister(&udpv6_prot);
proto_unregister(&tcpv6_prot);
}

6
net/ipv6/ipv6_sockglue.c
View file

@ -127,9 +127,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
struct sk_buff *pktopt;
if (sk->sk_protocol != IPPROTO_UDP &&
#ifdef CONFIG_IP_UDPLITE
sk->sk_protocol != IPPROTO_UDPLITE &&
#endif
sk->sk_protocol != IPPROTO_TCP)
break;
@ -169,7 +167,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
} else {
struct proto *prot = &udp_prot;
if (IS_PROTO_UDPLITE(sk->sk_protocol))
if (sk->sk_protocol == IPPROTO_UDPLITE)
prot = &udplite_prot;
local_bh_disable();
sock_prot_inuse_add(sk->sk_prot, -1);
@ -734,9 +732,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
switch (optname) {
case IPV6_ADDRFORM:
if (sk->sk_protocol != IPPROTO_UDP &&
#ifdef CONFIG_IP_UDPLITE
sk->sk_protocol != IPPROTO_UDPLITE &&
#endif
sk->sk_protocol != IPPROTO_TCP)
return -EINVAL;
if (sk->sk_state != TCP_ESTABLISHED)

6
net/ipv6/proc.c
View file

@ -39,10 +39,8 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v)
sock_prot_inuse_get(&tcpv6_prot));
seq_printf(seq, "UDP6: inuse %d\n",
sock_prot_inuse_get(&udpv6_prot));
#ifdef CONFIG_IP_UDPLITE
seq_printf(seq, "UDPLITE6: inuse %d\n",
sock_prot_inuse_get(&udplitev6_prot));
#endif
seq_printf(seq, "RAW6: inuse %d\n",
sock_prot_inuse_get(&rawv6_prot));
seq_printf(seq, "FRAG6: inuse %d memory %d\n",
@ -113,7 +111,6 @@ static struct snmp_mib snmp6_udp6_list[] = {
SNMP_MIB_SENTINEL
};
#ifdef CONFIG_IP_UDPLITE
static struct snmp_mib snmp6_udplite6_list[] = {
SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
@ -121,7 +118,6 @@ static struct snmp_mib snmp6_udplite6_list[] = {
SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
SNMP_MIB_SENTINEL
};
#endif
static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
{
@ -180,9 +176,7 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
#ifdef CONFIG_IP_UDPLITE
snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
#endif
}
return 0;
}

16
net/ipv6/udp_ipv6.c → net/ipv6/udp.c
View file

@ -400,7 +400,7 @@ static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh,
UDP_SKB_CB(skb)->partial_cov = 0;
UDP_SKB_CB(skb)->cscov = skb->len;
if (IS_PROTO_UDPLITE(proto)) {
if (proto == IPPROTO_UDPLITE) {
err = udplite_checksum_init(skb, uh);
if (err)
return err;
@ -489,7 +489,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
if (udp_lib_checksum_complete(skb))
goto discard;
UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, IS_PROTO_UDPLITE(proto));
UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE);
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0, dev);
@ -510,11 +510,11 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
short_packet:
LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n",
IS_PROTO_UDPLITE(proto) ? "-Lite" : "",
proto == IPPROTO_UDPLITE ? "-Lite" : "",
ulen, skb->len);
discard:
UDP6_INC_STATS_BH(UDP_MIB_INERRORS, IS_PROTO_UDPLITE(proto));
UDP6_INC_STATS_BH(UDP_MIB_INERRORS, proto == IPPROTO_UDPLITE);
kfree_skb(skb);
return 0;
}
@ -890,7 +890,7 @@ int udpv6_destroy_sock(struct sock *sk)
int udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
if (IS_SOL_UDPFAMILY(level))
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_setsockopt(sk, level, optname, optval, optlen,
udp_v6_push_pending_frames);
return ipv6_setsockopt(sk, level, optname, optval, optlen);
@ -900,7 +900,7 @@ int udpv6_setsockopt(struct sock *sk, int level, int optname,
int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
if (IS_SOL_UDPFAMILY(level))
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_setsockopt(sk, level, optname, optval, optlen,
udp_v6_push_pending_frames);
return compat_ipv6_setsockopt(sk, level, optname, optval, optlen);
@ -910,7 +910,7 @@ int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
int udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
if (IS_SOL_UDPFAMILY(level))
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
@ -919,7 +919,7 @@ int udpv6_getsockopt(struct sock *sk, int level, int optname,
int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
if (IS_SOL_UDPFAMILY(level))
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return compat_ipv6_getsockopt(sk, level, optname, optval, optlen);
}

0
net/ipv6/udplite_ipv6.c → net/ipv6/udplite.c
View file