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-rw-r--r--include/linux/udp.h25
-rw-r--r--include/net/ip.h1
-rw-r--r--include/net/ipv6.h2
-rw-r--r--include/net/udp.h45
-rw-r--r--include/net/udp_tunnel.h6
-rw-r--r--include/uapi/linux/udp.h1
6 files changed, 71 insertions, 9 deletions
diff --git a/include/linux/udp.h b/include/linux/udp.h
index 320d49d85484..0a9c54e76305 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -49,7 +49,13 @@ struct udp_sock {
unsigned int corkflag; /* Cork is required */
__u8 encap_type; /* Is this an Encapsulation socket? */
unsigned char no_check6_tx:1,/* Send zero UDP6 checksums on TX? */
- no_check6_rx:1;/* Allow zero UDP6 checksums on RX? */
+ no_check6_rx:1,/* Allow zero UDP6 checksums on RX? */
+ encap_enabled:1, /* This socket enabled encap
+ * processing; UDP tunnels and
+ * different encapsulation layer set
+ * this
+ */
+ gro_enabled:1; /* Can accept GRO packets */
/*
* Following member retains the information to create a UDP header
* when the socket is uncorked.
@@ -115,6 +121,23 @@ static inline bool udp_get_no_check6_rx(struct sock *sk)
return udp_sk(sk)->no_check6_rx;
}
+static inline void udp_cmsg_recv(struct msghdr *msg, struct sock *sk,
+ struct sk_buff *skb)
+{
+ int gso_size;
+
+ if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ gso_size = skb_shinfo(skb)->gso_size;
+ put_cmsg(msg, SOL_UDP, UDP_GRO, sizeof(gso_size), &gso_size);
+ }
+}
+
+static inline bool udp_unexpected_gso(struct sock *sk, struct sk_buff *skb)
+{
+ return !udp_sk(sk)->gro_enabled && skb_is_gso(skb) &&
+ skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4;
+}
+
#define udp_portaddr_for_each_entry(__sk, list) \
hlist_for_each_entry(__sk, list, __sk_common.skc_portaddr_node)
diff --git a/include/net/ip.h b/include/net/ip.h
index 462182f78236..8866bfce6121 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -155,6 +155,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
void ip_list_rcv(struct list_head *head, struct packet_type *pt,
struct net_device *orig_dev);
int ip_local_deliver(struct sk_buff *skb);
+void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int proto);
int ip_mr_input(struct sk_buff *skb);
int ip_output(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb);
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 829650540780..daf80863d3a5 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -975,6 +975,8 @@ int ip6_output(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip6_forward(struct sk_buff *skb);
int ip6_input(struct sk_buff *skb);
int ip6_mc_input(struct sk_buff *skb);
+void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,
+ bool have_final);
int __ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
diff --git a/include/net/udp.h b/include/net/udp.h
index a496e441645e..eccca2325ee6 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -417,17 +417,24 @@ static inline int copy_linear_skb(struct sk_buff *skb, int len, int off,
} while(0)
#if IS_ENABLED(CONFIG_IPV6)
-#define __UDPX_INC_STATS(sk, field) \
-do { \
- if ((sk)->sk_family == AF_INET) \
- __UDP_INC_STATS(sock_net(sk), field, 0); \
- else \
- __UDP6_INC_STATS(sock_net(sk), field, 0); \
-} while (0)
+#define __UDPX_MIB(sk, ipv4) \
+({ \
+ ipv4 ? (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \
+ sock_net(sk)->mib.udp_statistics) : \
+ (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_stats_in6 : \
+ sock_net(sk)->mib.udp_stats_in6); \
+})
#else
-#define __UDPX_INC_STATS(sk, field) __UDP_INC_STATS(sock_net(sk), field, 0)
+#define __UDPX_MIB(sk, ipv4) \
+({ \
+ IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \
+ sock_net(sk)->mib.udp_statistics; \
+})
#endif
+#define __UDPX_INC_STATS(sk, field) \
+ __SNMP_INC_STATS(__UDPX_MIB(sk, (sk)->sk_family == AF_INET), field)
+
#ifdef CONFIG_PROC_FS
struct udp_seq_afinfo {
sa_family_t family;
@@ -461,4 +468,26 @@ DECLARE_STATIC_KEY_FALSE(udpv6_encap_needed_key);
void udpv6_encap_enable(void);
#endif
+static inline struct sk_buff *udp_rcv_segment(struct sock *sk,
+ struct sk_buff *skb, bool ipv4)
+{
+ struct sk_buff *segs;
+
+ /* the GSO CB lays after the UDP one, no need to save and restore any
+ * CB fragment
+ */
+ segs = __skb_gso_segment(skb, NETIF_F_SG, false);
+ if (unlikely(IS_ERR_OR_NULL(segs))) {
+ int segs_nr = skb_shinfo(skb)->gso_segs;
+
+ atomic_add(segs_nr, &sk->sk_drops);
+ SNMP_ADD_STATS(__UDPX_MIB(sk, ipv4), UDP_MIB_INERRORS, segs_nr);
+ kfree_skb(skb);
+ return NULL;
+ }
+
+ consume_skb(skb);
+ return segs;
+}
+
#endif /* _UDP_H */
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index fe680ab6b15a..3fbe56430e3b 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -165,6 +165,12 @@ static inline int udp_tunnel_handle_offloads(struct sk_buff *skb, bool udp_csum)
static inline void udp_tunnel_encap_enable(struct socket *sock)
{
+ struct udp_sock *up = udp_sk(sock->sk);
+
+ if (up->encap_enabled)
+ return;
+
+ up->encap_enabled = 1;
#if IS_ENABLED(CONFIG_IPV6)
if (sock->sk->sk_family == PF_INET6)
ipv6_stub->udpv6_encap_enable();
diff --git a/include/uapi/linux/udp.h b/include/uapi/linux/udp.h
index 09502de447f5..30baccb6c9c4 100644
--- a/include/uapi/linux/udp.h
+++ b/include/uapi/linux/udp.h
@@ -33,6 +33,7 @@ struct udphdr {
#define UDP_NO_CHECK6_TX 101 /* Disable sending checksum for UDP6X */
#define UDP_NO_CHECK6_RX 102 /* Disable accpeting checksum for UDP6 */
#define UDP_SEGMENT 103 /* Set GSO segmentation size */
+#define UDP_GRO 104 /* This socket can receive UDP GRO packets */
/* UDP encapsulation types */
#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
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