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ipv6: Pull IPv6 GSO registration out of the module 

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>
hifive-unleashed-5.1
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 @@ out_destopt:
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 @@ out_rt:
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 @@ out_tcpv6_protosw:
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 @@ out:
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);
}