*
* Version: @(#)sock.h 1.0.4 05/13/93
*
- * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
+ * Authors: Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Corey Minyard <wf-rch!minyard@relay.EU.net>
* Florian La Roche <flla@stud.uni-sb.de>
struct sock;
/**
- * struct sock_common - minimal network layer representation of sockets
- * @skc_family - network address family
- * @skc_state - Connection state
- * @skc_reuse - %SO_REUSEADDR setting
- * @skc_bound_dev_if - bound device index if != 0
- * @skc_node - main hash linkage for various protocol lookup tables
- * @skc_bind_node - bind hash linkage for various protocol lookup tables
- * @skc_refcnt - reference count
- *
- * This is the minimal network layer representation of sockets, the header
- * for struct sock and struct tcp_tw_bucket.
+ * struct sock_common - minimal network layer representation of sockets
+ * @skc_family: network address family
+ * @skc_state: Connection state
+ * @skc_reuse: %SO_REUSEADDR setting
+ * @skc_bound_dev_if: bound device index if != 0
+ * @skc_node: main hash linkage for various protocol lookup tables
+ * @skc_bind_node: bind hash linkage for various protocol lookup tables
+ * @skc_refcnt: reference count
+ *
+ * This is the minimal network layer representation of sockets, the header
+ * for struct sock and struct tcp_tw_bucket.
*/
struct sock_common {
unsigned short skc_family;
/**
* struct sock - network layer representation of sockets
- * @__sk_common - shared layout with tcp_tw_bucket
- * @sk_shutdown - mask of %SEND_SHUTDOWN and/or %RCV_SHUTDOWN
- * @sk_userlocks - %SO_SNDBUF and %SO_RCVBUF settings
- * @sk_lock - synchronizer
- * @sk_rcvbuf - size of receive buffer in bytes
- * @sk_sleep - sock wait queue
- * @sk_dst_cache - destination cache
- * @sk_dst_lock - destination cache lock
- * @sk_policy - flow policy
- * @sk_rmem_alloc - receive queue bytes committed
- * @sk_receive_queue - incoming packets
- * @sk_wmem_alloc - transmit queue bytes committed
- * @sk_write_queue - Packet sending queue
- * @sk_omem_alloc - "o" is "option" or "other"
- * @sk_wmem_queued - persistent queue size
- * @sk_forward_alloc - space allocated forward
- * @sk_allocation - allocation mode
- * @sk_sndbuf - size of send buffer in bytes
- * @sk_flags - %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, %SO_OOBINLINE settings
- * @sk_no_check - %SO_NO_CHECK setting, wether or not checkup packets
- * @sk_route_caps - route capabilities (e.g. %NETIF_F_TSO)
- * @sk_lingertime - %SO_LINGER l_linger setting
- * @sk_hashent - hash entry in several tables (e.g. tcp_ehash)
- * @sk_backlog - always used with the per-socket spinlock held
- * @sk_callback_lock - used with the callbacks in the end of this struct
- * @sk_error_queue - rarely used
- * @sk_prot - protocol handlers inside a network family
- * @sk_err - last error
- * @sk_err_soft - errors that don't cause failure but are the cause of a persistent failure not just 'timed out'
- * @sk_ack_backlog - current listen backlog
- * @sk_max_ack_backlog - listen backlog set in listen()
- * @sk_priority - %SO_PRIORITY setting
- * @sk_type - socket type (%SOCK_STREAM, etc)
- * @sk_protocol - which protocol this socket belongs in this network family
- * @sk_peercred - %SO_PEERCRED setting
- * @sk_rcvlowat - %SO_RCVLOWAT setting
- * @sk_rcvtimeo - %SO_RCVTIMEO setting
- * @sk_sndtimeo - %SO_SNDTIMEO setting
- * @sk_filter - socket filtering instructions
- * @sk_protinfo - private area, net family specific, when not using slab
- * @sk_timer - sock cleanup timer
- * @sk_stamp - time stamp of last packet received
- * @sk_socket - Identd and reporting IO signals
- * @sk_user_data - RPC layer private data
- * @sk_sndmsg_page - cached page for sendmsg
- * @sk_sndmsg_off - cached offset for sendmsg
- * @sk_send_head - front of stuff to transmit
- * @sk_write_pending - a write to stream socket waits to start
- * @sk_state_change - callback to indicate change in the state of the sock
- * @sk_data_ready - callback to indicate there is data to be processed
- * @sk_write_space - callback to indicate there is bf sending space available
- * @sk_error_report - callback to indicate errors (e.g. %MSG_ERRQUEUE)
- * @sk_backlog_rcv - callback to process the backlog
- * @sk_destruct - called at sock freeing time, i.e. when all refcnt == 0
+ * @__sk_common: shared layout with tcp_tw_bucket
+ * @sk_shutdown: mask of %SEND_SHUTDOWN and/or %RCV_SHUTDOWN
+ * @sk_userlocks: %SO_SNDBUF and %SO_RCVBUF settings
+ * @sk_lock: synchronizer
+ * @sk_rcvbuf: size of receive buffer in bytes
+ * @sk_sleep: sock wait queue
+ * @sk_dst_cache: destination cache
+ * @sk_dst_lock: destination cache lock
+ * @sk_policy: flow policy
+ * @sk_rmem_alloc: receive queue bytes committed
+ * @sk_receive_queue: incoming packets
+ * @sk_wmem_alloc: transmit queue bytes committed
+ * @sk_write_queue: Packet sending queue
+ * @sk_omem_alloc: "o" is "option" or "other"
+ * @sk_wmem_queued: persistent queue size
+ * @sk_forward_alloc: space allocated forward
+ * @sk_allocation: allocation mode
+ * @sk_sndbuf: size of send buffer in bytes
+ * @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, %SO_OOBINLINE settings
+ * @sk_no_check: %SO_NO_CHECK setting, wether or not checkup packets
+ * @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO)
+ * @sk_lingertime: %SO_LINGER l_linger setting
+ * @sk_hashent: hash entry in several tables (e.g. tcp_ehash)
+ * @sk_backlog: always used with the per-socket spinlock held
+ * @sk_callback_lock: used with the callbacks in the end of this struct
+ * @sk_error_queue: rarely used
+ * @sk_prot: protocol handlers inside a network family
+ * @sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt, IPV6_ADDRFORM for instance)
+ * @sk_err: last error
+ * @sk_err_soft: errors that don't cause failure but are the cause of a persistent failure not just 'timed out'
+ * @sk_ack_backlog: current listen backlog
+ * @sk_max_ack_backlog: listen backlog set in listen()
+ * @sk_priority: %SO_PRIORITY setting
+ * @sk_type: socket type (%SOCK_STREAM, etc)
+ * @sk_protocol: which protocol this socket belongs in this network family
+ * @sk_peercred: %SO_PEERCRED setting
+ * @sk_rcvlowat: %SO_RCVLOWAT setting
+ * @sk_rcvtimeo: %SO_RCVTIMEO setting
+ * @sk_sndtimeo: %SO_SNDTIMEO setting
+ * @sk_filter: socket filtering instructions
+ * @sk_protinfo: private area, net family specific, when not using slab
+ * @sk_timer: sock cleanup timer
+ * @sk_stamp: time stamp of last packet received
+ * @sk_socket: Identd and reporting IO signals
+ * @sk_user_data: RPC layer private data
+ * @sk_sndmsg_page: cached page for sendmsg
+ * @sk_sndmsg_off: cached offset for sendmsg
+ * @sk_send_head: front of stuff to transmit
+ * @sk_security: used by security modules
+ * @sk_write_pending: a write to stream socket waits to start
+ * @sk_state_change: callback to indicate change in the state of the sock
+ * @sk_data_ready: callback to indicate there is data to be processed
+ * @sk_write_space: callback to indicate there is bf sending space available
+ * @sk_error_report: callback to indicate errors (e.g. %MSG_ERRQUEUE)
+ * @sk_backlog_rcv: callback to process the backlog
+ * @sk_destruct: called at sock freeing time, i.e. when all refcnt == 0
*/
struct sock {
/*
} sk_backlog;
struct sk_buff_head sk_error_queue;
struct proto *sk_prot;
+ struct proto *sk_prot_creator;
rwlock_t sk_callback_lock;
int sk_err,
sk_err_soft;
SOCK_QUEUE_SHRUNK, /* write queue has been shrunk recently */
};
+static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)
+{
+ nsk->sk_flags = osk->sk_flags;
+}
+
static inline void sock_set_flag(struct sock *sk, enum sock_flags flag)
{
__set_bit(flag, &sk->sk_flags);
extern int sk_wait_data(struct sock *sk, long *timeo);
+struct request_sock_ops;
+
/* Networking protocol blocks we attach to sockets.
* socket layer -> transport layer interface
* transport -> network interface is defined by struct inet_proto
kmem_cache_t *slab;
unsigned int obj_size;
+ struct request_sock_ops *rsk_prot;
+
struct module *owner;
char name[32];
#define bh_lock_sock(__sk) spin_lock(&((__sk)->sk_lock.slock))
#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock))
-extern struct sock *sk_alloc(int family, int priority,
+extern struct sock *sk_alloc(int family,
+ unsigned int __nocast priority,
struct proto *prot, int zero_it);
extern void sk_free(struct sock *sk);
extern struct sk_buff *sock_wmalloc(struct sock *sk,
unsigned long size, int force,
- int priority);
+ unsigned int __nocast priority);
extern struct sk_buff *sock_rmalloc(struct sock *sk,
unsigned long size, int force,
- int priority);
+ unsigned int __nocast priority);
extern void sock_wfree(struct sk_buff *skb);
extern void sock_rfree(struct sk_buff *skb);
unsigned long size,
int noblock,
int *errcode);
-extern void *sock_kmalloc(struct sock *sk, int size, int priority);
+extern void *sock_kmalloc(struct sock *sk, int size,
+ unsigned int __nocast priority);
extern void sock_kfree_s(struct sock *sk, void *mem, int size);
extern void sk_send_sigurg(struct sock *sk);
}
static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
- int size, int mem, int gfp)
+ int size, int mem,
+ unsigned int __nocast gfp)
{
- struct sk_buff *skb = alloc_skb(size + sk->sk_prot->max_header, gfp);
+ struct sk_buff *skb;
+ int hdr_len;
+ hdr_len = SKB_DATA_ALIGN(sk->sk_prot->max_header);
+ skb = alloc_skb(size + hdr_len, gfp);
if (skb) {
skb->truesize += mem;
if (sk->sk_forward_alloc >= (int)skb->truesize ||
sk_stream_mem_schedule(sk, skb->truesize, 0)) {
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, hdr_len);
return skb;
}
__kfree_skb(skb);
}
static inline struct sk_buff *sk_stream_alloc_skb(struct sock *sk,
- int size, int gfp)
+ int size,
+ unsigned int __nocast gfp)
{
return sk_stream_alloc_pskb(sk, size, 0, gfp);
}
return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2);
}
-static inline int gfp_any(void)
+static inline unsigned int __nocast gfp_any(void)
{
return in_softirq() ? GFP_ATOMIC : GFP_KERNEL;
}
/**
* sk_eat_skb - Release a skb if it is no longer needed
- * @sk - socket to eat this skb from
- * @skb - socket buffer to eat
+ * @sk: socket to eat this skb from
+ * @skb: socket buffer to eat
*
* This routine must be called with interrupts disabled or with the socket
* locked so that the sk_buff queue operation is ok.
projects / ~andy / linux / blobdiff