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ipv6: Pull IPv6 GSO registration out of the module

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Sing GSO support is now separate, pull it out of the module
and make it its own init call.
Remove the cleanup functions as they are no longer called.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2012-11-15 08:49:22 +00:00 committed by David S. Miller
parent 808a8f8845
commit c6b641a4c6
12 changed files with 36 additions and 75 deletions
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11
include/net/protocol.h
View file

@ -25,6 +25,7 @@
#define _PROTOCOL_H
#include <linux/in6.h>
#include <linux/skbuff.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <linux/ipv6.h>
#endif
@ -59,8 +60,6 @@ struct inet6_protocol {
#define INET6_PROTO_NOPOLICY 0x1
#define INET6_PROTO_FINAL 0x2
/* This should be set for any extension header which is compatible with GSO. */
#define INET6_PROTO_GSO_EXTHDR 0x4
#endif
struct net_offload {
@ -72,6 +71,8 @@ struct net_offload {
int (*gro_complete)(struct sk_buff *skb);
unsigned int flags; /* Flags used by IPv6 for now */
};
/* This should be set for any extension header which is compatible with GSO. */
#define INET6_PROTO_GSO_EXTHDR 0x1
/* This is used to register socket interfaces for IP protocols. */
struct inet_protosw {
@ -93,10 +94,10 @@ struct inet_protosw {
extern const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS];
extern const struct net_offload __rcu *inet_offloads[MAX_INET_PROTOS];
extern const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS];
#if IS_ENABLED(CONFIG_IPV6)
extern const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS];
extern const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS];
#endif
extern int inet_add_protocol(const struct net_protocol *prot, unsigned char num);
@ -109,10 +110,10 @@ extern void inet_unregister_protosw(struct inet_protosw *p);
#if IS_ENABLED(CONFIG_IPV6)
extern int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char num);
extern int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char num);
extern int inet6_add_offload(const struct net_offload *prot, unsigned char num);
extern int inet6_del_offload(const struct net_offload *prot, unsigned char num);
extern int inet6_register_protosw(struct inet_protosw *p);
extern void inet6_unregister_protosw(struct inet_protosw *p);
#endif
extern int inet6_add_offload(const struct net_offload *prot, unsigned char num);
extern int inet6_del_offload(const struct net_offload *prot, unsigned char num);
#endif /* _PROTOCOL_H */

6
net/ipv6/Makefile
View file

@ -7,7 +7,7 @@ obj-$(CONFIG_IPV6) += ipv6.o
ipv6-objs := af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
addrlabel.o \
route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o udplite.o \
raw.o protocol.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
raw.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o
ipv6-offload := ip6_offload.o tcpv6_offload.o udp_offload.o exthdrs_offload.o
@ -23,7 +23,6 @@ ipv6-$(CONFIG_PROC_FS) += proc.o
ipv6-$(CONFIG_SYN_COOKIES) += syncookies.o
ipv6-objs += $(ipv6-y)
ipv6-objs += $(ipv6-offload)
obj-$(CONFIG_INET6_AH) += ah6.o
obj-$(CONFIG_INET6_ESP) += esp6.o
@ -41,6 +40,7 @@ obj-$(CONFIG_IPV6_SIT) += sit.o
obj-$(CONFIG_IPV6_TUNNEL) += ip6_tunnel.o
obj-$(CONFIG_IPV6_GRE) += ip6_gre.o
obj-y += addrconf_core.o exthdrs_core.o output_core.o
obj-y += addrconf_core.o exthdrs_core.o output_core.o protocol.o
obj-y += $(ipv6-offload)
obj-$(subst m,y,$(CONFIG_IPV6)) += inet6_hashtables.o

3
net/ipv6/af_inet6.c
View file

@ -62,7 +62,6 @@
#include <asm/uaccess.h>
#include <linux/mroute6.h>
#include "ip6_offload.h"
MODULE_AUTHOR("Cast of dozens");
MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
@ -707,14 +706,12 @@ static struct packet_type ipv6_packet_type __read_mostly = {
static int __init ipv6_packet_init(void)
{
ipv6_offload_init();
dev_add_pack(&ipv6_packet_type);
return 0;
}
static void ipv6_packet_cleanup(void)
{
ipv6_offload_cleanup();
dev_remove_pack(&ipv6_packet_type);
}

10
net/ipv6/exthdrs.c
View file

@ -48,7 +48,6 @@
#endif
#include <asm/uaccess.h>
#include "ip6_offload.h"
/*
* Parsing tlv encoded headers.
@ -502,13 +501,9 @@ int __init ipv6_exthdrs_init(void)
{
int ret;
ret = ipv6_exthdrs_offload_init();
if (ret)
goto out;
ret = inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING);
if (ret)
goto out_offload;
goto out;
ret = inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
if (ret)
@ -524,14 +519,11 @@ int __init ipv6_exthdrs_init(void)
inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
out_rthdr:
inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);
out_offload:
ipv6_exthdrs_offload_exit();
goto out;
};
void ipv6_exthdrs_exit(void)
{
ipv6_exthdrs_offload_exit();
inet6_del_protocol(&nodata_protocol, IPPROTO_NONE);
inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);

6
net/ipv6/exthdrs_offload.c
View file

@ -39,9 +39,3 @@ int __init ipv6_exthdrs_offload_init(void)
inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);
goto out;
}
void ipv6_exthdrs_offload_exit(void)
{
inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);
inet_del_offload(&rthdr_offload, IPPROTO_DSTOPTS);
}

17
net/ipv6/ip6_offload.c
View file

@ -12,6 +12,7 @@
#include <linux/socket.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/printk.h>
#include <net/protocol.h>
#include <net/ipv6.h>
@ -262,12 +263,18 @@ static struct packet_offload ipv6_packet_offload __read_mostly = {
.gro_complete = ipv6_gro_complete,
};
void __init ipv6_offload_init(void)
static int __init ipv6_offload_init(void)
{
if (tcpv6_offload_init() < 0)
pr_crit("%s: Cannot add TCP protocol offload\n", __func__);
if (udp_offload_init() < 0)
pr_crit("%s: Cannot add UDP protocol offload\n", __func__);
if (ipv6_exthdrs_offload_init() < 0)
pr_crit("%s: Cannot add EXTHDRS protocol offload\n", __func__);
dev_add_offload(&ipv6_packet_offload);
return 0;
}
void ipv6_offload_cleanup(void)
{
dev_remove_offload(&ipv6_packet_offload);
}
fs_initcall(ipv6_offload_init);

8
net/ipv6/ip6_offload.h
View file

@ -12,15 +12,7 @@
#define __ip6_offload_h
int ipv6_exthdrs_offload_init(void);
void ipv6_exthdrs_offload_exit(void);
int udp_offload_init(void);
void udp_offload_cleanup(void);
int tcpv6_offload_init(void);
void tcpv6_offload_cleanup(void);
extern void ipv6_offload_init(void);
extern void ipv6_offload_cleanup(void);
#endif

20
net/ipv6/protocol.c
View file

@ -25,8 +25,9 @@
#include <linux/spinlock.h>
#include <net/protocol.h>
#if IS_ENABLED(CONFIG_IPV6)
const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly;
const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly;
EXPORT_SYMBOL(inet6_protos);
int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol)
{
@ -35,13 +36,6 @@ int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol
}
EXPORT_SYMBOL(inet6_add_protocol);
int inet6_add_offload(const struct net_offload *prot, unsigned char protocol)
{
return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet6_add_offload);
/*
* Remove a protocol from the hash tables.
*/
@ -58,6 +52,16 @@ int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol
return ret;
}
EXPORT_SYMBOL(inet6_del_protocol);
#endif
const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly;
int inet6_add_offload(const struct net_offload *prot, unsigned char protocol)
{
return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
NULL, prot) ? 0 : -1;
}
EXPORT_SYMBOL(inet6_add_offload);
int inet6_del_offload(const struct net_offload *prot, unsigned char protocol)
{

10
net/ipv6/tcp_ipv6.c
View file

@ -71,7 +71,6 @@
#include <linux/crypto.h>
#include <linux/scatterlist.h>
#include "ip6_offload.h"
static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb);
static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
@ -2007,13 +2006,9 @@ int __init tcpv6_init(void)
{
int ret;
ret = tcpv6_offload_init();
if (ret)
goto out;
ret = inet6_add_protocol(&tcpv6_protocol, IPPROTO_TCP);
if (ret)
goto out_offload;
goto out;
/* register inet6 protocol */
ret = inet6_register_protosw(&tcpv6_protosw);
@ -2030,8 +2025,6 @@ int __init tcpv6_init(void)
inet6_unregister_protosw(&tcpv6_protosw);
out_tcpv6_protocol:
inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);
out_offload:
tcpv6_offload_cleanup();
goto out;
}
@ -2040,5 +2033,4 @@ void tcpv6_exit(void)
unregister_pernet_subsys(&tcpv6_net_ops);
inet6_unregister_protosw(&tcpv6_protosw);
inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);
tcpv6_offload_cleanup();
}

5
net/ipv6/tcpv6_offload.c
View file

@ -91,8 +91,3 @@ int __init tcpv6_offload_init(void)
{
return inet6_add_offload(&tcpv6_offload, IPPROTO_TCP);
}
void tcpv6_offload_cleanup(void)
{
inet6_del_offload(&tcpv6_offload, IPPROTO_TCP);
}

10
net/ipv6/udp.c
View file

@ -50,7 +50,6 @@
#include <linux/seq_file.h>
#include <trace/events/skb.h>
#include "udp_impl.h"
#include "ip6_offload.h"
int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
{
@ -1472,13 +1471,9 @@ int __init udpv6_init(void)
{
int ret;
ret = udp_offload_init();
if (ret)
goto out;
ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);
if (ret)
goto out_offload;
goto out;
ret = inet6_register_protosw(&udpv6_protosw);
if (ret)
@ -1488,8 +1483,6 @@ int __init udpv6_init(void)
out_udpv6_protocol:
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
out_offload:
udp_offload_cleanup();
goto out;
}
@ -1497,5 +1490,4 @@ void udpv6_exit(void)
{
inet6_unregister_protosw(&udpv6_protosw);
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
udp_offload_cleanup();
}

5
net/ipv6/udp_offload.c
View file

@ -115,8 +115,3 @@ int __init udp_offload_init(void)
{
return inet6_add_offload(&udpv6_offload, IPPROTO_UDP);
}
void udp_offload_cleanup(void)
{
inet6_del_offload(&udpv6_offload, IPPROTO_UDP);
}