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-rw-r--r--include/linux/udp.h8
-rw-r--r--include/net/udp.h7
-rw-r--r--net/ipv4/udp_offload.c52
-rw-r--r--net/ipv6/Makefile5
-rw-r--r--net/ipv6/af_inet6.c8
-rw-r--r--net/ipv6/ip6_offload.c2
-rw-r--r--net/ipv6/ip6_offload.h3
-rw-r--r--net/ipv6/udp_offload.c11
8 files changed, 54 insertions, 42 deletions
diff --git a/include/linux/udp.h b/include/linux/udp.h
index 32342754643a..d1fd8cd39478 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -71,6 +71,14 @@ struct udp_sock {
*/
int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
void (*encap_destroy)(struct sock *sk);
+
+ /* GRO functions for UDP socket */
+ struct sk_buff ** (*gro_receive)(struct sock *sk,
+ struct sk_buff **head,
+ struct sk_buff *skb);
+ int (*gro_complete)(struct sock *sk,
+ struct sk_buff *skb,
+ int nhoff);
};
static inline struct udp_sock *udp_sk(const struct sock *sk)
diff --git a/include/net/udp.h b/include/net/udp.h
index 3aa0b3ec1fb0..3c5a65e0946d 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -167,9 +167,12 @@ static inline void udp_csum_pull_header(struct sk_buff *skb)
UDP_SKB_CB(skb)->cscov -= sizeof(struct udphdr);
}
+typedef struct sock *(*udp_lookup_t)(struct sk_buff *skb, __be16 sport,
+ __be16 dport);
+
struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
- struct udphdr *uh);
-int udp_gro_complete(struct sk_buff *skb, int nhoff);
+ struct udphdr *uh, udp_lookup_t lookup);
+int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup);
static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb)
{
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 0ed2dafb7cc4..65c3fd34b363 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -179,6 +179,7 @@ out_unlock:
return segs;
}
+EXPORT_SYMBOL(skb_udp_tunnel_segment);
static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
netdev_features_t features)
@@ -304,13 +305,13 @@ unlock:
EXPORT_SYMBOL(udp_del_offload);
struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
- struct udphdr *uh)
+ struct udphdr *uh, udp_lookup_t lookup)
{
- struct udp_offload_priv *uo_priv;
struct sk_buff *p, **pp = NULL;
struct udphdr *uh2;
unsigned int off = skb_gro_offset(skb);
int flush = 1;
+ struct sock *sk;
if (NAPI_GRO_CB(skb)->encap_mark ||
(skb->ip_summed != CHECKSUM_PARTIAL &&
@@ -322,13 +323,11 @@ struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
NAPI_GRO_CB(skb)->encap_mark = 1;
rcu_read_lock();
- uo_priv = rcu_dereference(udp_offload_base);
- for (; uo_priv != NULL; uo_priv = rcu_dereference(uo_priv->next)) {
- if (net_eq(read_pnet(&uo_priv->net), dev_net(skb->dev)) &&
- uo_priv->offload->port == uh->dest &&
- uo_priv->offload->callbacks.gro_receive)
- goto unflush;
- }
+ sk = (*lookup)(skb, uh->source, uh->dest);
+
+ if (sk && udp_sk(sk)->gro_receive)
+ goto unflush;
+
goto out_unlock;
unflush:
@@ -352,9 +351,7 @@ unflush:
skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */
skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr));
- NAPI_GRO_CB(skb)->proto = uo_priv->offload->ipproto;
- pp = uo_priv->offload->callbacks.gro_receive(head, skb,
- uo_priv->offload);
+ pp = udp_sk(sk)->gro_receive(sk, head, skb);
out_unlock:
rcu_read_unlock();
@@ -362,6 +359,7 @@ out:
NAPI_GRO_CB(skb)->flush |= flush;
return pp;
}
+EXPORT_SYMBOL(udp_gro_receive);
static struct sk_buff **udp4_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
@@ -383,39 +381,28 @@ static struct sk_buff **udp4_gro_receive(struct sk_buff **head,
inet_gro_compute_pseudo);
skip:
NAPI_GRO_CB(skb)->is_ipv6 = 0;
- return udp_gro_receive(head, skb, uh);
+ return udp_gro_receive(head, skb, uh, udp4_lib_lookup_skb);
flush:
NAPI_GRO_CB(skb)->flush = 1;
return NULL;
}
-int udp_gro_complete(struct sk_buff *skb, int nhoff)
+int udp_gro_complete(struct sk_buff *skb, int nhoff,
+ udp_lookup_t lookup)
{
- struct udp_offload_priv *uo_priv;
__be16 newlen = htons(skb->len - nhoff);
struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);
int err = -ENOSYS;
+ struct sock *sk;
uh->len = newlen;
rcu_read_lock();
-
- uo_priv = rcu_dereference(udp_offload_base);
- for (; uo_priv != NULL; uo_priv = rcu_dereference(uo_priv->next)) {
- if (net_eq(read_pnet(&uo_priv->net), dev_net(skb->dev)) &&
- uo_priv->offload->port == uh->dest &&
- uo_priv->offload->callbacks.gro_complete)
- break;
- }
-
- if (uo_priv) {
- NAPI_GRO_CB(skb)->proto = uo_priv->offload->ipproto;
- err = uo_priv->offload->callbacks.gro_complete(skb,
- nhoff + sizeof(struct udphdr),
- uo_priv->offload);
- }
-
+ sk = (*lookup)(skb, uh->source, uh->dest);
+ if (sk && udp_sk(sk)->gro_complete)
+ err = udp_sk(sk)->gro_complete(sk, skb,
+ nhoff + sizeof(struct udphdr));
rcu_read_unlock();
if (skb->remcsum_offload)
@@ -426,6 +413,7 @@ int udp_gro_complete(struct sk_buff *skb, int nhoff)
return err;
}
+EXPORT_SYMBOL(udp_gro_complete);
static int udp4_gro_complete(struct sk_buff *skb, int nhoff)
{
@@ -440,7 +428,7 @@ static int udp4_gro_complete(struct sk_buff *skb, int nhoff)
skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;
}
- return udp_gro_complete(skb, nhoff);
+ return udp_gro_complete(skb, nhoff, udp4_lib_lookup_skb);
}
static const struct net_offload udpv4_offload = {
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 2fbd90bf8d33..5e9d6bf4aaca 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -8,9 +8,10 @@ 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 icmp.o mcast.o reassembly.o tcp_ipv6.o ping.o \
- exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o
+ exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o \
+ udp_offload.o
-ipv6-offload := ip6_offload.o tcpv6_offload.o udp_offload.o exthdrs_offload.o
+ipv6-offload := ip6_offload.o tcpv6_offload.o exthdrs_offload.o
ipv6-$(CONFIG_SYSCTL) = sysctl_net_ipv6.o
ipv6-$(CONFIG_IPV6_MROUTE) += ip6mr.o
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 2b78aad0d52f..bfa86f040c16 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -64,6 +64,8 @@
#include <asm/uaccess.h>
#include <linux/mroute6.h>
+#include "ip6_offload.h"
+
MODULE_AUTHOR("Cast of dozens");
MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
MODULE_LICENSE("GPL");
@@ -959,6 +961,10 @@ static int __init inet6_init(void)
if (err)
goto udplitev6_fail;
+ err = udpv6_offload_init();
+ if (err)
+ goto udpv6_offload_fail;
+
err = tcpv6_init();
if (err)
goto tcpv6_fail;
@@ -988,6 +994,8 @@ pingv6_fail:
ipv6_packet_fail:
tcpv6_exit();
tcpv6_fail:
+ udpv6_offload_exit();
+udpv6_offload_fail:
udplitev6_exit();
udplitev6_fail:
udpv6_exit();
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 82e9f3076028..204af2219471 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -325,8 +325,6 @@ 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__);
diff --git a/net/ipv6/ip6_offload.h b/net/ipv6/ip6_offload.h
index 2e155c651b35..96b40e41ac53 100644
--- a/net/ipv6/ip6_offload.h
+++ b/net/ipv6/ip6_offload.h
@@ -12,7 +12,8 @@
#define __ip6_offload_h
int ipv6_exthdrs_offload_init(void);
-int udp_offload_init(void);
+int udpv6_offload_init(void);
+int udpv6_offload_exit(void);
int tcpv6_offload_init(void);
#endif
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index 2b0fbe6929e8..5429f6bcf047 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -153,7 +153,7 @@ static struct sk_buff **udp6_gro_receive(struct sk_buff **head,
skip:
NAPI_GRO_CB(skb)->is_ipv6 = 1;
- return udp_gro_receive(head, skb, uh);
+ return udp_gro_receive(head, skb, uh, udp6_lib_lookup_skb);
flush:
NAPI_GRO_CB(skb)->flush = 1;
@@ -173,7 +173,7 @@ static int udp6_gro_complete(struct sk_buff *skb, int nhoff)
skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;
}
- return udp_gro_complete(skb, nhoff);
+ return udp_gro_complete(skb, nhoff, udp6_lib_lookup_skb);
}
static const struct net_offload udpv6_offload = {
@@ -184,7 +184,12 @@ static const struct net_offload udpv6_offload = {
},
};
-int __init udp_offload_init(void)
+int udpv6_offload_init(void)
{
return inet6_add_offload(&udpv6_offload, IPPROTO_UDP);
}
+
+int udpv6_offload_exit(void)
+{
+ return inet6_del_offload(&udpv6_offload, IPPROTO_UDP);
+}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-06 00:10:15 +0300