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-rw-r--r--include/linux/tcp.h22
-rw-r--r--include/net/inet6_connection_sock.h2
-rw-r--r--include/net/inet_connection_sock.h5
-rw-r--r--include/net/inet_hashtables.h2
-rw-r--r--include/net/request_sock.h16
-rw-r--r--include/net/sock.h2
-rw-r--r--include/net/tcp.h28
7 files changed, 30 insertions, 47 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index fcb573be75d9..e442e6e9a365 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -382,25 +382,11 @@ static inline bool tcp_passive_fastopen(const struct sock *sk)
tcp_sk(sk)->fastopen_rsk != NULL);
}
-extern void tcp_sock_destruct(struct sock *sk);
-
-static inline int fastopen_init_queue(struct sock *sk, int backlog)
+static inline void fastopen_queue_tune(struct sock *sk, int backlog)
{
- struct request_sock_queue *queue =
- &inet_csk(sk)->icsk_accept_queue;
-
- if (queue->fastopenq == NULL) {
- queue->fastopenq = kzalloc(
- sizeof(struct fastopen_queue),
- sk->sk_allocation);
- if (queue->fastopenq == NULL)
- return -ENOMEM;
-
- sk->sk_destruct = tcp_sock_destruct;
- spin_lock_init(&queue->fastopenq->lock);
- }
- queue->fastopenq->max_qlen = backlog;
- return 0;
+ struct request_sock_queue *queue = &inet_csk(sk)->icsk_accept_queue;
+
+ queue->fastopenq.max_qlen = backlog;
}
static inline void tcp_saved_syn_free(struct tcp_sock *tp)
diff --git a/include/net/inet6_connection_sock.h b/include/net/inet6_connection_sock.h
index 81d937e820c4..79b2a4c09ca6 100644
--- a/include/net/inet6_connection_sock.h
+++ b/include/net/inet6_connection_sock.h
@@ -26,7 +26,7 @@ int inet6_csk_bind_conflict(const struct sock *sk,
const struct inet_bind_bucket *tb, bool relax);
struct dst_entry *inet6_csk_route_req(const struct sock *sk, struct flowi6 *fl6,
- const struct request_sock *req);
+ const struct request_sock *req, u8 proto);
struct request_sock *inet6_csk_search_req(struct sock *sk,
const __be16 rport,
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 00c3ced6ee55..ee54f21a8113 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -41,7 +41,7 @@ struct inet_connection_sock_af_ops {
int (*rebuild_header)(struct sock *sk);
void (*sk_rx_dst_set)(struct sock *sk, const struct sk_buff *skb);
int (*conn_request)(struct sock *sk, struct sk_buff *skb);
- struct sock *(*syn_recv_sock)(struct sock *sk, struct sk_buff *skb,
+ struct sock *(*syn_recv_sock)(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst);
u16 net_header_len;
@@ -268,7 +268,8 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum);
struct dst_entry *inet_csk_route_req(const struct sock *sk, struct flowi4 *fl4,
const struct request_sock *req);
-struct dst_entry *inet_csk_route_child_sock(struct sock *sk, struct sock *newsk,
+struct dst_entry *inet_csk_route_child_sock(const struct sock *sk,
+ struct sock *newsk,
const struct request_sock *req);
static inline void inet_csk_reqsk_queue_add(struct sock *sk,
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
index b07d126694a7..3fb778d7c875 100644
--- a/include/net/inet_hashtables.h
+++ b/include/net/inet_hashtables.h
@@ -199,7 +199,7 @@ static inline int inet_sk_listen_hashfn(const struct sock *sk)
}
/* Caller must disable local BH processing. */
-int __inet_inherit_port(struct sock *sk, struct sock *child);
+int __inet_inherit_port(const struct sock *sk, struct sock *child);
void inet_put_port(struct sock *sk);
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 181f97f9fe1c..d2544de329bd 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -34,9 +34,9 @@ struct request_sock_ops {
char *slab_name;
int (*rtx_syn_ack)(const struct sock *sk,
struct request_sock *req);
- void (*send_ack)(struct sock *sk, struct sk_buff *skb,
+ void (*send_ack)(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req);
- void (*send_reset)(struct sock *sk,
+ void (*send_reset)(const struct sock *sk,
struct sk_buff *skb);
void (*destructor)(struct request_sock *req);
void (*syn_ack_timeout)(const struct request_sock *req);
@@ -129,9 +129,8 @@ struct listen_sock {
atomic_t qlen_dec; /* qlen = qlen_inc - qlen_dec */
atomic_t young_dec;
- u8 max_qlen_log ____cacheline_aligned_in_smp;
- u8 synflood_warned;
- /* 2 bytes hole, try to use */
+ u32 max_qlen_log ____cacheline_aligned_in_smp;
+ u32 synflood_warned;
u32 hash_rnd;
u32 nr_table_entries;
struct request_sock *syn_table[0];
@@ -181,11 +180,8 @@ struct request_sock_queue {
struct request_sock *rskq_accept_tail;
u8 rskq_defer_accept;
struct listen_sock *listen_opt;
- struct fastopen_queue *fastopenq; /* This is non-NULL iff TFO has been
- * enabled on this listener. Check
- * max_qlen != 0 in fastopen_queue
- * to determine if TFO is enabled
- * right at this moment.
+ struct fastopen_queue fastopenq; /* Check max_qlen != 0 to determine
+ * if TFO is enabled.
*/
/* temporary alignment, our goal is to get rid of this lock */
diff --git a/include/net/sock.h b/include/net/sock.h
index 94dff7f566f5..dfe2eb8e1132 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -759,7 +759,7 @@ static inline int sk_memalloc_socks(void)
#endif
-static inline gfp_t sk_gfp_atomic(struct sock *sk, gfp_t gfp_mask)
+static inline gfp_t sk_gfp_atomic(const struct sock *sk, gfp_t gfp_mask)
{
return GFP_ATOMIC | (sk->sk_allocation & __GFP_MEMALLOC);
}
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cdbf63d3c5cf..2c7dfe52f473 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -365,8 +365,7 @@ void tcp_wfree(struct sk_buff *skb);
void tcp_write_timer_handler(struct sock *sk);
void tcp_delack_timer_handler(struct sock *sk);
int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg);
-int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
- const struct tcphdr *th, unsigned int len);
+int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb);
void tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
const struct tcphdr *th, unsigned int len);
void tcp_rcv_space_adjust(struct sock *sk);
@@ -451,11 +450,11 @@ void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb);
void tcp_v4_mtu_reduced(struct sock *sk);
void tcp_req_err(struct sock *sk, u32 seq);
int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb);
-struct sock *tcp_create_openreq_child(struct sock *sk,
+struct sock *tcp_create_openreq_child(const struct sock *sk,
struct request_sock *req,
struct sk_buff *skb);
void tcp_ca_openreq_child(struct sock *sk, const struct dst_entry *dst);
-struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
+struct sock *tcp_v4_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst);
int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb);
@@ -492,8 +491,9 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb);
/* syncookies: remember time of last synqueue overflow
* But do not dirty this field too often (once per second is enough)
+ * It is racy as we do not hold a lock, but race is very minor.
*/
-static inline void tcp_synq_overflow(struct sock *sk)
+static inline void tcp_synq_overflow(const struct sock *sk)
{
unsigned long last_overflow = tcp_sk(sk)->rx_opt.ts_recent_stamp;
unsigned long now = jiffies;
@@ -520,8 +520,7 @@ static inline u32 tcp_cookie_time(void)
u32 __cookie_v4_init_sequence(const struct iphdr *iph, const struct tcphdr *th,
u16 *mssp);
-__u32 cookie_v4_init_sequence(struct sock *sk, const struct sk_buff *skb,
- __u16 *mss);
+__u32 cookie_v4_init_sequence(const struct sk_buff *skb, __u16 *mss);
__u32 cookie_init_timestamp(struct request_sock *req);
bool cookie_timestamp_decode(struct tcp_options_received *opt);
bool cookie_ecn_ok(const struct tcp_options_received *opt,
@@ -534,8 +533,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
u32 __cookie_v6_init_sequence(const struct ipv6hdr *iph,
const struct tcphdr *th, u16 *mssp);
-__u32 cookie_v6_init_sequence(struct sock *sk, const struct sk_buff *skb,
- __u16 *mss);
+__u32 cookie_v6_init_sequence(const struct sk_buff *skb, __u16 *mss);
#endif
/* tcp_output.c */
@@ -1710,10 +1708,10 @@ struct tcp_request_sock_ops {
const struct sock *sk_listener,
struct sk_buff *skb);
#ifdef CONFIG_SYN_COOKIES
- __u32 (*cookie_init_seq)(struct sock *sk, const struct sk_buff *skb,
+ __u32 (*cookie_init_seq)(const struct sk_buff *skb,
__u16 *mss);
#endif
- struct dst_entry *(*route_req)(struct sock *sk, struct flowi *fl,
+ struct dst_entry *(*route_req)(const struct sock *sk, struct flowi *fl,
const struct request_sock *req,
bool *strict);
__u32 (*init_seq)(const struct sk_buff *skb);
@@ -1726,14 +1724,16 @@ struct tcp_request_sock_ops {
#ifdef CONFIG_SYN_COOKIES
static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops,
- struct sock *sk, struct sk_buff *skb,
+ const struct sock *sk, struct sk_buff *skb,
__u16 *mss)
{
- return ops->cookie_init_seq(sk, skb, mss);
+ tcp_synq_overflow(sk);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESSENT);
+ return ops->cookie_init_seq(skb, mss);
}
#else
static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops,
- struct sock *sk, struct sk_buff *skb,
+ const struct sock *sk, struct sk_buff *skb,
__u16 *mss)
{
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-11 07:40:07 +0000