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authorEric Dumazet <edumazet@google.com>2014-01-06 14:03:07 -0800
committerDavid S. Miller <davem@davemloft.net>2014-01-06 20:28:34 -0500
commit438e38fadca2f6e57eeecc08326c8a95758594d4 (patch)
tree8c71bf332c0827545b2ece7471c09a4489cba5dc /net
parent0e5959346cb859851e99ed87bd07f76ed5bb3a37 (diff)
downloadop-kernel-dev-438e38fadca2f6e57eeecc08326c8a95758594d4.zip
op-kernel-dev-438e38fadca2f6e57eeecc08326c8a95758594d4.tar.gz
gre_offload: statically build GRE offloading support
GRO/GSO layers can be enabled on a node, even if said node is only forwarding packets. This patch permits GSO (and upcoming GRO) support for GRE encapsulated packets, even if the host has no GRE tunnel setup. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/Makefile4
-rw-r--r--net/ipv4/gre_demux.c9
-rw-r--r--net/ipv4/gre_offload.c7
3 files changed, 7 insertions, 13 deletions
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index 4b81e91..f8c49ce 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -11,7 +11,7 @@ obj-y := route.o inetpeer.o protocol.o \
tcp_offload.o datagram.o raw.o udp.o udplite.o \
udp_offload.o arp.o icmp.o devinet.o af_inet.o igmp.o \
fib_frontend.o fib_semantics.o fib_trie.o \
- inet_fragment.o ping.o ip_tunnel_core.o
+ inet_fragment.o ping.o ip_tunnel_core.o gre_offload.o
obj-$(CONFIG_NET_IP_TUNNEL) += ip_tunnel.o
obj-$(CONFIG_SYSCTL) += sysctl_net_ipv4.o
@@ -19,7 +19,7 @@ obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o
obj-$(CONFIG_IP_MROUTE) += ipmr.o
obj-$(CONFIG_NET_IPIP) += ipip.o
-gre-y := gre_demux.o gre_offload.o
+gre-y := gre_demux.o
obj-$(CONFIG_NET_IPGRE_DEMUX) += gre.o
obj-$(CONFIG_NET_IPGRE) += ip_gre.o
obj-$(CONFIG_NET_IPVTI) += ip_vti.o
diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
index 5893e99..1863422f 100644
--- a/net/ipv4/gre_demux.c
+++ b/net/ipv4/gre_demux.c
@@ -355,14 +355,7 @@ static int __init gre_init(void)
goto err_gre;
}
- if (gre_offload_init()) {
- pr_err("can't add protocol offload\n");
- goto err_gso;
- }
-
return 0;
-err_gso:
- gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO);
err_gre:
inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
err:
@@ -371,8 +364,6 @@ err:
static void __exit gre_exit(void)
{
- gre_offload_exit();
-
gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO);
inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
}
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 2cd02f3..9138cfb 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -123,12 +123,15 @@ static const struct net_offload gre_offload = {
},
};
-int __init gre_offload_init(void)
+static int __init gre_offload_init(void)
{
return inet_add_offload(&gre_offload, IPPROTO_GRE);
}
-void __exit gre_offload_exit(void)
+static void __exit gre_offload_exit(void)
{
inet_del_offload(&gre_offload, IPPROTO_GRE);
}
+
+module_init(gre_offload_init);
+module_exit(gre_offload_exit);
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