/* * This file contains definitions imported from the OFED rds header rds.h. * Oracle elects to have and use the contents of rds.h under and * governed by the OpenIB.org BSD license. */ /* * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. */ #ifndef _RDSV3_RDSV3_H #define _RDSV3_RDSV3_H /* * The name of this file is rds.h in ofed. */ #ifdef __cplusplus extern "C" { #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define NIPQUAD(addr) \ (unsigned char)((ntohl(addr) >> 24) & 0xFF), \ (unsigned char)((ntohl(addr) >> 16) & 0xFF), \ (unsigned char)((ntohl(addr) >> 8) & 0xFF), \ (unsigned char)(ntohl(addr) & 0xFF) /* * RDS Network protocol version */ #define RDS_PROTOCOL_3_0 0x0300 #define RDS_PROTOCOL_3_1 0x0301 #define RDS_PROTOCOL_VERSION RDS_PROTOCOL_3_1 #define RDS_PROTOCOL_MAJOR(v) ((v) >> 8) #define RDS_PROTOCOL_MINOR(v) ((v) & 255) #define RDS_PROTOCOL(maj, min) (((maj) << 8) | min) /* * XXX randomly chosen, but at least seems to be unused: * # 18464-18768 Unassigned * We should do better. We want a reserved port to discourage unpriv'ed * userspace from listening. * * port 18633 was the version that had ack frames on the wire. */ #define RDSV3_PORT 18634 #define RDSV3_REAPER_WAIT_SECS (5*60) #define RDSV3_REAPER_WAIT_JIFFIES SEC_TO_TICK(RDSV3_REAPER_WAIT_SECS) static inline ulong_t ceil(ulong_t x, ulong_t y) { return ((x + y - 1) / y); } #define RDSV3_FRAG_SHIFT 12 #define RDSV3_FRAG_SIZE ((unsigned int)(1 << RDSV3_FRAG_SHIFT)) #define RDSV3_CONG_MAP_BYTES (65536 / 8) #define RDSV3_CONG_MAP_LONGS (RDSV3_CONG_MAP_BYTES / sizeof (unsigned long)) #define RDSV3_CONG_MAP_PAGES (RDSV3_CONG_MAP_BYTES / PAGE_SIZE) #define RDSV3_CONG_MAP_PAGE_BITS (PAGE_SIZE * 8) struct rdsv3_cong_map { struct avl_node m_rb_node; uint32_be_t m_addr; rdsv3_wait_queue_t m_waitq; struct list m_conn_list; unsigned long m_page_addrs[RDSV3_CONG_MAP_PAGES]; }; /* * This is how we will track the connection state: * A connection is always in one of the following * states. Updates to the state are atomic and imply * a memory barrier. */ enum { RDSV3_CONN_DOWN = 0, RDSV3_CONN_CONNECTING, RDSV3_CONN_DISCONNECTING, RDSV3_CONN_UP, RDSV3_CONN_ERROR, }; /* Bits for c_flags */ #define RDSV3_LL_SEND_FULL 0 #define RDSV3_RECONNECT_PENDING 1 struct rdsv3_connection { struct avl_node c_hash_node; struct rdsv3_ip_bucket *c_bucketp; uint32_be_t c_laddr; uint32_be_t c_faddr; unsigned int c_loopback:1; struct rdsv3_connection *c_passive; struct rdsv3_cong_map *c_lcong; struct rdsv3_cong_map *c_fcong; struct mutex c_send_lock; /* protect send ring */ atomic_t c_send_generation; atomic_t c_senders; struct rdsv3_message *c_xmit_rm; unsigned long c_xmit_sg; unsigned int c_xmit_hdr_off; unsigned int c_xmit_data_off; unsigned int c_xmit_rdma_sent; kmutex_t c_lock; /* protect msg queues */ uint64_t c_next_tx_seq; struct list c_send_queue; struct list c_retrans; uint64_t c_next_rx_seq; struct rdsv3_transport *c_trans; void *c_transport_data; atomic_t c_state; unsigned long c_flags; unsigned long c_reconnect_jiffies; clock_t c_last_connect_jiffies; struct rdsv3_delayed_work_s c_send_w; struct rdsv3_delayed_work_s c_recv_w; struct rdsv3_delayed_work_s c_conn_w; struct rdsv3_delayed_work_s c_reap_w; struct rdsv3_work_s c_down_w; struct mutex c_cm_lock; /* protect conn state & cm */ struct list_node c_map_item; unsigned long c_map_queued; unsigned long c_map_offset; unsigned long c_map_bytes; unsigned int c_unacked_packets; unsigned int c_unacked_bytes; /* Protocol version */ unsigned int c_version; }; #define RDSV3_FLAG_CONG_BITMAP 0x01 #define RDSV3_FLAG_ACK_REQUIRED 0x02 #define RDSV3_FLAG_RETRANSMITTED 0x04 #define RDSV3_MAX_ADV_CREDIT 127 /* * Maximum space available for extension headers. */ #define RDSV3_HEADER_EXT_SPACE 16 struct rdsv3_header { uint64_be_t h_sequence; uint64_be_t h_ack; uint32_be_t h_len; uint16_be_t h_sport; uint16_be_t h_dport; uint8_t h_flags; uint8_t h_credit; uint8_t h_padding[4]; uint16_be_t h_csum; uint8_t h_exthdr[RDSV3_HEADER_EXT_SPACE]; }; /* Reserved - indicates end of extensions */ #define RDSV3_EXTHDR_NONE 0 /* * This extension header is included in the very * first message that is sent on a new connection, * and identifies the protocol level. This will help * rolling updates if a future change requires breaking * the protocol. */ #define RDSV3_EXTHDR_VERSION 1 struct rdsv3_ext_header_version { uint32_be_t h_version; }; /* * This extension header is included in the RDS message * chasing an RDMA operation. */ #define RDSV3_EXTHDR_RDMA 2 struct rdsv3_ext_header_rdma { uint32_be_t h_rdma_rkey; }; /* * This extension header tells the peer about the * destination of the requested RDMA * operation. */ #define RDSV3_EXTHDR_RDMA_DEST 3 struct rdsv3_ext_header_rdma_dest { uint32_be_t h_rdma_rkey; uint32_be_t h_rdma_offset; }; #define __RDSV3_EXTHDR_MAX 16 /* for now */ struct rdsv3_incoming { atomic_t i_refcount; struct list_node i_item; struct rdsv3_connection *i_conn; struct rdsv3_header i_hdr; unsigned long i_rx_jiffies; uint32_be_t i_saddr; rds_rdma_cookie_t i_rdma_cookie; }; /* * m_sock_item and m_conn_item are on lists that are serialized under * conn->c_lock. m_sock_item has additional meaning in that once it is empty * the message will not be put back on the retransmit list after being sent. * messages that are canceled while being sent rely on this. * * m_inc is used by loopback so that it can pass an incoming message straight * back up into the rx path. It embeds a wire header which is also used by * the send path, which is kind of awkward. * * m_sock_item indicates the message's presence on a socket's send or receive * queue. m_rs will point to that socket. * * m_daddr is used by cancellation to prune messages to a given destination. * * The RDS_MSG_ON_SOCK and RDS_MSG_ON_CONN flags are used to avoid lock * nesting. As paths iterate over messages on a sock, or conn, they must * also lock the conn, or sock, to remove the message from those lists too. * Testing the flag to determine if the message is still on the lists lets * us avoid testing the list_head directly. That means each path can use * the message's list_head to keep it on a local list while juggling locks * without confusing the other path. * * m_ack_seq is an optional field set by transports who need a different * sequence number range to invalidate. They can use this in a callback * that they pass to rdsv3_send_drop_acked() to see if each message has been * acked. The HAS_ACK_SEQ flag can be used to detect messages which haven't * had ack_seq set yet. */ #define RDSV3_MSG_ON_SOCK 1 #define RDSV3_MSG_ON_CONN 2 #define RDSV3_MSG_HAS_ACK_SEQ 3 #define RDSV3_MSG_ACK_REQUIRED 4 #define RDSV3_MSG_RETRANSMITTED 5 #define RDSV3_MSG_MAPPED 6 #define RDSV3_MSG_PAGEVEC 7 struct rdsv3_message { atomic_t m_refcount; struct list_node m_sock_item; struct list_node m_conn_item; struct rdsv3_incoming m_inc; uint64_t m_ack_seq; uint32_be_t m_daddr; unsigned long m_flags; /* * Never access m_rs without holding m_rs_lock. * Lock nesting is * rm->m_rs_lock * -> rs->rs_lock */ kmutex_t m_rs_lock; rdsv3_wait_queue_t m_flush_wait; struct rdsv3_sock *m_rs; struct rdsv3_rdma_op *m_rdma_op; rds_rdma_cookie_t m_rdma_cookie; struct rdsv3_mr *m_rdma_mr; unsigned int m_nents; unsigned int m_count; struct rdsv3_scatterlist m_sg[1]; }; /* * The RDS notifier is used (optionally) to tell the application about * completed RDMA operations. Rather than keeping the whole rds message * around on the queue, we allocate a small notifier that is put on the * socket's notifier_list. Notifications are delivered to the application * through control messages. */ struct rdsv3_notifier { list_node_t n_list; uint64_t n_user_token; int n_status; }; /* * struct rdsv3_transport - transport specific behavioural hooks * * @xmit: .xmit is called by rdsv3_send_xmit() to tell the transport to send * part of a message. The caller serializes on the send_sem so this * doesn't need to be reentrant for a given conn. The header must be * sent before the data payload. .xmit must be prepared to send a * message with no data payload. .xmit should return the number of * bytes that were sent down the connection, including header bytes. * Returning 0 tells the caller that it doesn't need to perform any * additional work now. This is usually the case when the transport has * filled the sending queue for its connection and will handle * triggering the rds thread to continue the send when space becomes * available. Returning -EAGAIN tells the caller to retry the send * immediately. Returning -ENOMEM tells the caller to retry the send at * some point in the future. * * @conn_shutdown: conn_shutdown stops traffic on the given connection. Once * it returns the connection can not call rdsv3_recv_incoming(). * This will only be called once after conn_connect returns * non-zero success and will The caller serializes this with * the send and connecting paths (xmit_* and conn_*). The * transport is responsible for other serialization, including * rdsv3_recv_incoming(). This is called in process context but * should try hard not to block. * * @xmit_cong_map: This asks the transport to send the local bitmap down the * given connection. XXX get a better story about the bitmap * flag and header. */ #define RDS_TRANS_IB 0 #define RDS_TRANS_IWARP 1 #define RDS_TRANS_TCP 2 #define RDS_TRANS_COUNT 3 struct rdsv3_transport { char t_name[TRANSNAMSIZ]; struct list_node t_item; unsigned int t_type; unsigned int t_prefer_loopback:1; int (*laddr_check)(uint32_be_t addr); int (*conn_alloc)(struct rdsv3_connection *conn, int gfp); void (*conn_free)(void *data); int (*conn_connect)(struct rdsv3_connection *conn); void (*conn_shutdown)(struct rdsv3_connection *conn); void (*xmit_prepare)(struct rdsv3_connection *conn); void (*xmit_complete)(struct rdsv3_connection *conn); int (*xmit)(struct rdsv3_connection *conn, struct rdsv3_message *rm, unsigned int hdr_off, unsigned int sg, unsigned int off); int (*xmit_cong_map)(struct rdsv3_connection *conn, struct rdsv3_cong_map *map, unsigned long offset); int (*xmit_rdma)(struct rdsv3_connection *conn, struct rdsv3_rdma_op *op); int (*recv)(struct rdsv3_connection *conn); int (*inc_copy_to_user)(struct rdsv3_incoming *inc, uio_t *uio, size_t size); void (*inc_free)(struct rdsv3_incoming *inc); int (*cm_handle_connect)(struct rdma_cm_id *cm_id, struct rdma_cm_event *event); int (*cm_initiate_connect)(struct rdma_cm_id *cm_id); void (*cm_connect_complete)(struct rdsv3_connection *conn, struct rdma_cm_event *event); unsigned int (*stats_info_copy)(struct rdsv3_info_iterator *iter, unsigned int avail); void (*exit)(void); void *(*get_mr)(struct rds_iovec *sg, unsigned long nr_sg, struct rdsv3_sock *rs, uint32_t *key_ret); void (*sync_mr)(void *trans_private, int direction); void (*free_mr)(void *trans_private, int invalidate); void (*flush_mrs)(void); }; struct rdsv3_sock { struct rsock *rs_sk; uint64_t rs_user_addr; uint64_t rs_user_bytes; /* * bound_addr used for both incoming and outgoing, no INADDR_ANY * support. */ struct avl_node rs_bound_node; uint32_be_t rs_bound_addr; uint32_be_t rs_conn_addr; uint16_be_t rs_bound_port; uint16_be_t rs_conn_port; /* * This is only used to communicate the transport between bind and * initiating connections. All other trans use is referenced through * the connection. */ struct rdsv3_transport *rs_transport; /* * rdsv3_sendmsg caches the conn it used the last time around. * This helps avoid costly lookups. */ struct rdsv3_connection *rs_conn; kmutex_t rs_conn_lock; /* flag indicating we were congested or not */ int rs_congested; /* seen congestion (ENOBUFS) when sending? */ int rs_seen_congestion; kmutex_t rs_congested_lock; kcondvar_t rs_congested_cv; /* rs_lock protects all these adjacent members before the newline */ kmutex_t rs_lock; struct list rs_send_queue; uint32_t rs_snd_bytes; int rs_rcv_bytes; /* currently used for failed RDMAs */ struct list rs_notify_queue; /* * Congestion wake_up. If rs_cong_monitor is set, we use cong_mask * to decide whether the application should be woken up. * If not set, we use rs_cong_track to find out whether a cong map * update arrived. */ uint64_t rs_cong_mask; uint64_t rs_cong_notify; struct list_node rs_cong_list; unsigned long rs_cong_track; /* * rs_recv_lock protects the receive queue, and is * used to serialize with rdsv3_release. */ krwlock_t rs_recv_lock; struct list rs_recv_queue; /* just for stats reporting */ struct list_node rs_item; /* these have their own lock */ kmutex_t rs_rdma_lock; struct avl_tree rs_rdma_keys; /* Socket options - in case there will be more */ unsigned char rs_recverr, rs_cong_monitor; cred_t *rs_cred; zoneid_t rs_zoneid; }; static inline struct rdsv3_sock * rdsv3_sk_to_rs(const struct rsock *sk) { return ((struct rdsv3_sock *)sk->sk_protinfo); } static inline struct rsock * rdsv3_rs_to_sk(const struct rdsv3_sock *rs) { return ((struct rsock *)rs->rs_sk); } /* * The stack assigns sk_sndbuf and sk_rcvbuf to twice the specified value * to account for overhead. We don't account for overhead, we just apply * the number of payload bytes to the specified value. */ static inline int rdsv3_sk_sndbuf(struct rdsv3_sock *rs) { /* XXX */ return (rdsv3_rs_to_sk(rs)->sk_sndbuf); } static inline int rdsv3_sk_rcvbuf(struct rdsv3_sock *rs) { /* XXX */ return (rdsv3_rs_to_sk(rs)->sk_rcvbuf); } struct rdsv3_statistics { uint64_t s_conn_reset; uint64_t s_recv_drop_bad_checksum; uint64_t s_recv_drop_old_seq; uint64_t s_recv_drop_no_sock; uint64_t s_recv_drop_dead_sock; uint64_t s_recv_deliver_raced; uint64_t s_recv_delivered; uint64_t s_recv_queued; uint64_t s_recv_immediate_retry; uint64_t s_recv_delayed_retry; uint64_t s_recv_ack_required; uint64_t s_recv_rdma_bytes; uint64_t s_recv_ping; uint64_t s_send_queue_empty; uint64_t s_send_queue_full; uint64_t s_send_sem_contention; uint64_t s_send_sem_queue_raced; uint64_t s_send_immediate_retry; uint64_t s_send_delayed_retry; uint64_t s_send_drop_acked; uint64_t s_send_ack_required; uint64_t s_send_queued; uint64_t s_send_rdma; uint64_t s_send_rdma_bytes; uint64_t s_send_pong; uint64_t s_page_remainder_hit; uint64_t s_page_remainder_miss; uint64_t s_copy_to_user; uint64_t s_copy_from_user; uint64_t s_cong_update_queued; uint64_t s_cong_update_received; uint64_t s_cong_send_error; uint64_t s_cong_send_blocked; }; /* af_rds.c */ void rdsv3_sock_addref(struct rdsv3_sock *rs); void rdsv3_sock_put(struct rdsv3_sock *rs); void rdsv3_wake_sk_sleep(struct rdsv3_sock *rs); void __rdsv3_wake_sk_sleep(struct rsock *sk); /* bind.c */ int rdsv3_bind(sock_lower_handle_t proto_handle, struct sockaddr *sa, socklen_t len, cred_t *cr); void rdsv3_remove_bound(struct rdsv3_sock *rs); struct rdsv3_sock *rdsv3_find_bound(struct rdsv3_connection *conn, uint16_be_t port); struct rdsv3_ip_bucket *rdsv3_find_ip_bucket(ipaddr_t, zoneid_t); /* conn.c */ int rdsv3_conn_init(void); void rdsv3_conn_exit(void); struct rdsv3_connection *rdsv3_conn_create(uint32_be_t laddr, uint32_be_t faddr, struct rdsv3_transport *trans, int gfp); struct rdsv3_connection *rdsv3_conn_create_outgoing(uint32_be_t laddr, uint32_be_t faddr, struct rdsv3_transport *trans, int gfp); void rdsv3_conn_shutdown(struct rdsv3_connection *conn); void rdsv3_conn_destroy(struct rdsv3_connection *conn); void rdsv3_conn_reset(struct rdsv3_connection *conn); void rdsv3_conn_drop(struct rdsv3_connection *conn); void rdsv3_for_each_conn_info(struct rsock *sock, unsigned int len, struct rdsv3_info_iterator *iter, struct rdsv3_info_lengths *lens, int (*visitor)(struct rdsv3_connection *, void *), size_t item_len); static inline int rdsv3_conn_transition(struct rdsv3_connection *conn, int old, int new) { return (atomic_cmpxchg(&conn->c_state, old, new) == old); } static inline int rdsv3_conn_state(struct rdsv3_connection *conn) { return (atomic_get(&conn->c_state)); } static inline int rdsv3_conn_up(struct rdsv3_connection *conn) { return (atomic_get(&conn->c_state) == RDSV3_CONN_UP); } static inline int rdsv3_conn_connecting(struct rdsv3_connection *conn) { return (atomic_get(&conn->c_state) == RDSV3_CONN_CONNECTING); } /* recv.c */ void rdsv3_inc_init(struct rdsv3_incoming *inc, struct rdsv3_connection *conn, uint32_be_t saddr); void rdsv3_inc_addref(struct rdsv3_incoming *inc); void rdsv3_inc_put(struct rdsv3_incoming *inc); void rdsv3_recv_incoming(struct rdsv3_connection *conn, uint32_be_t saddr, uint32_be_t daddr, struct rdsv3_incoming *inc, int gfp); int rdsv3_recvmsg(struct rdsv3_sock *rs, uio_t *uio, struct msghdr *msg, size_t size, int msg_flags); void rdsv3_clear_recv_queue(struct rdsv3_sock *rs); int rdsv3_notify_queue_get(struct rdsv3_sock *rs, struct msghdr *msg); void rdsv3_inc_info_copy(struct rdsv3_incoming *inc, struct rdsv3_info_iterator *iter, uint32_be_t saddr, uint32_be_t daddr, int flip); /* page.c */ int rdsv3_page_remainder_alloc(struct rdsv3_scatterlist *scat, unsigned long bytes, int gfp); /* send.c */ int rdsv3_sendmsg(struct rdsv3_sock *rs, uio_t *uio, struct nmsghdr *msg, size_t payload_len); void rdsv3_send_reset(struct rdsv3_connection *conn); int rdsv3_send_xmit(struct rdsv3_connection *conn); struct sockaddr_in; void rdsv3_send_drop_to(struct rdsv3_sock *rs, struct sockaddr_in *dest); typedef int (*is_acked_func)(struct rdsv3_message *rm, uint64_t ack); void rdsv3_send_drop_acked(struct rdsv3_connection *conn, uint64_t ack, is_acked_func is_acked); int rdsv3_send_acked_before(struct rdsv3_connection *conn, uint64_t seq); void rdsv3_send_remove_from_sock(struct list *messages, int status); int rdsv3_send_pong(struct rdsv3_connection *conn, uint16_be_t dport); struct rdsv3_message *rdsv3_send_get_message(struct rdsv3_connection *, struct rdsv3_rdma_op *); /* rdma.c */ void rdsv3_rdma_unuse(struct rdsv3_sock *rs, uint32_t r_key, int force); /* cong.c */ void rdsv3_cong_init(void); int rdsv3_cong_get_maps(struct rdsv3_connection *conn); void rdsv3_cong_add_conn(struct rdsv3_connection *conn); void rdsv3_cong_remove_conn(struct rdsv3_connection *conn); void rdsv3_cong_set_bit(struct rdsv3_cong_map *map, uint16_be_t port); void rdsv3_cong_clear_bit(struct rdsv3_cong_map *map, uint16_be_t port); int rdsv3_cong_wait(struct rdsv3_cong_map *map, uint16_be_t port, int nonblock, struct rdsv3_sock *rs); void rdsv3_cong_queue_updates(struct rdsv3_cong_map *map); void rdsv3_cong_map_updated(struct rdsv3_cong_map *map, uint64_t); int rdsv3_cong_updated_since(unsigned long *recent); void rdsv3_cong_add_socket(struct rdsv3_sock *); void rdsv3_cong_remove_socket(struct rdsv3_sock *); void rdsv3_cong_exit(void); struct rdsv3_message *rdsv3_cong_update_alloc(struct rdsv3_connection *conn); /* stats.c */ extern uint_t nr_cpus; extern struct rdsv3_statistics *rdsv3_stats; #define rdsv3_per_cpu(var, cpu) var[cpu] #define rdsv3_stats_add_which(which, member, count) do { \ rdsv3_per_cpu(which, CPU->cpu_seqid).member += count; \ } while (0) #define rdsv3_stats_inc(member) \ rdsv3_stats_add_which(rdsv3_stats, member, 1) #define rdsv3_stats_add(member, count) \ rdsv3_stats_add_which(rdsv3_stats, member, count) int rdsv3_stats_init(void); void rdsv3_stats_exit(void); void rdsv3_stats_info_copy(struct rdsv3_info_iterator *iter, uint64_t *values, char **names, size_t nr); /* sysctl.c */ int rdsv3_sysctl_init(void); void rdsv3_sysctl_exit(void); extern unsigned long rdsv3_sysctl_sndbuf_min; extern unsigned long rdsv3_sysctl_sndbuf_default; extern unsigned long rdsv3_sysctl_sndbuf_max; extern unsigned long rdsv3_sysctl_reconnect_min_jiffies; extern unsigned long rdsv3_sysctl_reconnect_max_jiffies; extern unsigned int rdsv3_sysctl_max_unacked_packets; extern unsigned int rdsv3_sysctl_max_unacked_bytes; extern unsigned int rdsv3_sysctl_ping_enable; extern unsigned long rdsv3_sysctl_trace_flags; extern unsigned int rdsv3_sysctl_trace_level; /* threads.c */ int rdsv3_threads_init(); void rdsv3_threads_exit(void); extern struct rdsv3_workqueue_struct_s *rdsv3_wq; void rdsv3_queue_reconnect(struct rdsv3_connection *conn); void rdsv3_connect_worker(struct rdsv3_work_s *); void rdsv3_shutdown_worker(struct rdsv3_work_s *); void rdsv3_send_worker(struct rdsv3_work_s *); void rdsv3_recv_worker(struct rdsv3_work_s *); void rdsv3_reaper_worker(struct rdsv3_work_s *); void rdsv3_connect_complete(struct rdsv3_connection *conn); /* transport.c */ int rdsv3_trans_register(struct rdsv3_transport *trans); void rdsv3_trans_unregister(struct rdsv3_transport *trans); struct rdsv3_transport *rdsv3_trans_get_preferred(uint32_be_t addr); unsigned int rdsv3_trans_stats_info_copy(struct rdsv3_info_iterator *iter, unsigned int avail); void rdsv3_trans_exit(void); /* message.c */ struct rdsv3_message *rdsv3_message_alloc(unsigned int nents, int gfp); struct rdsv3_message *rdsv3_message_copy_from_user(struct uio *uiop, size_t total_len); struct rdsv3_message *rdsv3_message_map_pages(unsigned long *page_addrs, unsigned int total_len); void rdsv3_message_populate_header(struct rdsv3_header *hdr, uint16_be_t sport, uint16_be_t dport, uint64_t seq); int rdsv3_message_add_extension(struct rdsv3_header *hdr, unsigned int type, const void *data, unsigned int len); int rdsv3_message_next_extension(struct rdsv3_header *hdr, unsigned int *pos, void *buf, unsigned int *buflen); int rdsv3_message_add_version_extension(struct rdsv3_header *hdr, unsigned int version); int rdsv3_message_get_version_extension(struct rdsv3_header *hdr, unsigned int *version); int rdsv3_message_add_rdma_dest_extension(struct rdsv3_header *hdr, uint32_t r_key, uint32_t offset); int rdsv3_message_inc_copy_to_user(struct rdsv3_incoming *inc, uio_t *uio, size_t size); void rdsv3_message_inc_free(struct rdsv3_incoming *inc); void rdsv3_message_addref(struct rdsv3_message *rm); void rdsv3_message_put(struct rdsv3_message *rm); void rdsv3_message_wait(struct rdsv3_message *rm); void rdsv3_message_unmapped(struct rdsv3_message *rm); static inline void rdsv3_message_make_checksum(struct rdsv3_header *hdr) { hdr->h_csum = 0; hdr->h_csum = rdsv3_ip_fast_csum((void *)hdr, sizeof (*hdr) >> 2); } static inline int rdsv3_message_verify_checksum(const struct rdsv3_header *hdr) { return (!hdr->h_csum || rdsv3_ip_fast_csum((void *)hdr, sizeof (*hdr) >> 2) == 0); } /* rdsv3_sc.c */ extern boolean_t rdsv3_if_lookup_by_name(char *if_name); extern int rdsv3_sc_path_lookup(ipaddr_t *localip, ipaddr_t *remip); extern ipaddr_t rdsv3_scaddr_to_ibaddr(ipaddr_t addr); #ifdef __cplusplus } #endif #endif /* _RDSV3_RDSV3_H */