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-rw-r--r--include/net/flow.h25
-rw-r--r--include/net/ip_vs.h1
-rw-r--r--include/net/request_sock.h3
-rw-r--r--include/net/sctp/command.h1
-rw-r--r--include/net/tcp.h22
-rw-r--r--include/net/transp_v6.h1
-rw-r--r--include/net/udplite.h63
7 files changed, 79 insertions, 37 deletions
diff --git a/include/net/flow.h b/include/net/flow.h
index 78113daadd63..a09447749e2d 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -7,6 +7,7 @@
#ifndef _NET_FLOW_H
#define _NET_FLOW_H
+#include <linux/socket.h>
#include <linux/in6.h>
#include <linux/atomic.h>
@@ -68,7 +69,7 @@ struct flowi4 {
#define fl4_ipsec_spi uli.spi
#define fl4_mh_type uli.mht.type
#define fl4_gre_key uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
__u32 mark, __u8 tos, __u8 scope,
@@ -112,7 +113,7 @@ struct flowi6 {
#define fl6_ipsec_spi uli.spi
#define fl6_mh_type uli.mht.type
#define fl6_gre_key uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
struct flowidn {
struct flowi_common __fl_common;
@@ -127,7 +128,7 @@ struct flowidn {
union flowi_uli uli;
#define fld_sport uli.ports.sport
#define fld_dport uli.ports.dport
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
struct flowi {
union {
@@ -161,6 +162,24 @@ static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn)
return container_of(fldn, struct flowi, u.dn);
}
+typedef unsigned long flow_compare_t;
+
+static inline size_t flow_key_size(u16 family)
+{
+ switch (family) {
+ case AF_INET:
+ BUILD_BUG_ON(sizeof(struct flowi4) % sizeof(flow_compare_t));
+ return sizeof(struct flowi4) / sizeof(flow_compare_t);
+ case AF_INET6:
+ BUILD_BUG_ON(sizeof(struct flowi6) % sizeof(flow_compare_t));
+ return sizeof(struct flowi6) / sizeof(flow_compare_t);
+ case AF_DECnet:
+ BUILD_BUG_ON(sizeof(struct flowidn) % sizeof(flow_compare_t));
+ return sizeof(struct flowidn) / sizeof(flow_compare_t);
+ }
+ return 0;
+}
+
#define FLOW_DIR_IN 0
#define FLOW_DIR_OUT 1
#define FLOW_DIR_FWD 2
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 1aaf915656f3..8fa4430f99c1 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -900,6 +900,7 @@ struct netns_ipvs {
volatile int sync_state;
volatile int master_syncid;
volatile int backup_syncid;
+ struct mutex sync_mutex;
/* multicast interface name */
char master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 99e6e19b57c2..4c0766e201e3 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -96,7 +96,8 @@ extern int sysctl_max_syn_backlog;
*/
struct listen_sock {
u8 max_qlen_log;
- /* 3 bytes hole, try to use */
+ u8 synflood_warned;
+ /* 2 bytes hole, try to use */
int qlen;
int qlen_young;
int clock_hand;
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h
index 6506458ccd33..712b3bebeda7 100644
--- a/include/net/sctp/command.h
+++ b/include/net/sctp/command.h
@@ -109,6 +109,7 @@ typedef enum {
SCTP_CMD_SEND_MSG, /* Send the whole use message */
SCTP_CMD_SEND_NEXT_ASCONF, /* Send the next ASCONF after ACK */
SCTP_CMD_PURGE_ASCONF_QUEUE, /* Purge all asconf queues.*/
+ SCTP_CMD_SET_ASOC, /* Restore association context */
SCTP_CMD_LAST
} sctp_verb_t;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 149a415d1e0a..acc620a4a45f 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -431,17 +431,34 @@ extern int tcp_disconnect(struct sock *sk, int flags);
extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];
extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
struct ip_options *opt);
+#ifdef CONFIG_SYN_COOKIES
extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb,
__u16 *mss);
+#else
+static inline __u32 cookie_v4_init_sequence(struct sock *sk,
+ struct sk_buff *skb,
+ __u16 *mss)
+{
+ return 0;
+}
+#endif
extern __u32 cookie_init_timestamp(struct request_sock *req);
extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *);
/* From net/ipv6/syncookies.c */
extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
+#ifdef CONFIG_SYN_COOKIES
extern __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb,
__u16 *mss);
-
+#else
+static inline __u32 cookie_v6_init_sequence(struct sock *sk,
+ struct sk_buff *skb,
+ __u16 *mss)
+{
+ return 0;
+}
+#endif
/* tcp_output.c */
extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
@@ -460,6 +477,9 @@ extern int tcp_write_wakeup(struct sock *);
extern void tcp_send_fin(struct sock *sk);
extern void tcp_send_active_reset(struct sock *sk, gfp_t priority);
extern int tcp_send_synack(struct sock *);
+extern int tcp_syn_flood_action(struct sock *sk,
+ const struct sk_buff *skb,
+ const char *proto);
extern void tcp_push_one(struct sock *, unsigned int mss_now);
extern void tcp_send_ack(struct sock *sk);
extern void tcp_send_delayed_ack(struct sock *sk);
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index 5271a741c3a3..498433dd067d 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -39,6 +39,7 @@ extern int datagram_recv_ctl(struct sock *sk,
struct sk_buff *skb);
extern int datagram_send_ctl(struct net *net,
+ struct sock *sk,
struct msghdr *msg,
struct flowi6 *fl6,
struct ipv6_txoptions *opt,
diff --git a/include/net/udplite.h b/include/net/udplite.h
index 673a024c6b2a..5f097ca7d5c5 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -66,40 +66,34 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
return 0;
}
-static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
+/* Slow-path computation of checksum. Socket is locked. */
+static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
{
+ const struct udp_sock *up = udp_sk(skb->sk);
int cscov = up->len;
+ __wsum csum = 0;
- /*
- * Sender has set `partial coverage' option on UDP-Lite socket
- */
- if (up->pcflag & UDPLITE_SEND_CC) {
+ if (up->pcflag & UDPLITE_SEND_CC) {
+ /*
+ * Sender has set `partial coverage' option on UDP-Lite socket.
+ * The special case "up->pcslen == 0" signifies full coverage.
+ */
if (up->pcslen < up->len) {
- /* up->pcslen == 0 means that full coverage is required,
- * partial coverage only if 0 < up->pcslen < up->len */
- if (0 < up->pcslen) {
- cscov = up->pcslen;
- }
- uh->len = htons(up->pcslen);
+ if (0 < up->pcslen)
+ cscov = up->pcslen;
+ udp_hdr(skb)->len = htons(up->pcslen);
}
- /*
- * NOTE: Causes for the error case `up->pcslen > up->len':
- * (i) Application error (will not be penalized).
- * (ii) Payload too big for send buffer: data is split
- * into several packets, each with its own header.
- * In this case (e.g. last segment), coverage may
- * exceed packet length.
- * Since packets with coverage length > packet length are
- * illegal, we fall back to the defaults here.
- */
+ /*
+ * NOTE: Causes for the error case `up->pcslen > up->len':
+ * (i) Application error (will not be penalized).
+ * (ii) Payload too big for send buffer: data is split
+ * into several packets, each with its own header.
+ * In this case (e.g. last segment), coverage may
+ * exceed packet length.
+ * Since packets with coverage length > packet length are
+ * illegal, we fall back to the defaults here.
+ */
}
- return cscov;
-}
-
-static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
-{
- int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb));
- __wsum csum = 0;
skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
@@ -115,16 +109,21 @@ static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
return csum;
}
+/* Fast-path computation of checksum. Socket may not be locked. */
static inline __wsum udplite_csum(struct sk_buff *skb)
{
- struct sock *sk = skb->sk;
- int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb));
+ const struct udp_sock *up = udp_sk(skb->sk);
const int off = skb_transport_offset(skb);
- const int len = skb->len - off;
+ int len = skb->len - off;
+ if ((up->pcflag & UDPLITE_SEND_CC) && up->pcslen < len) {
+ if (0 < up->pcslen)
+ len = up->pcslen;
+ udp_hdr(skb)->len = htons(up->pcslen);
+ }
skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
- return skb_checksum(skb, off, min(cscov, len), 0);
+ return skb_checksum(skb, off, len, 0);
}
extern void udplite4_register(void);

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