コード例 #1
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
/*
 * As above, except the mbuf chain begins a new record.
 */
void
sbappendrecord(struct sockbuf *sb, struct mbuf *m0)
{

	SOCKBUF_LOCK(sb);
	sbappendrecord_locked(sb, m0);
	SOCKBUF_UNLOCK(sb);
}
コード例 #2
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
/*
 * This version of sbappend() should only be used when the caller absolutely
 * knows that there will never be more than one record in the socket buffer,
 * that is, a stream protocol (such as TCP).
 */
void
sbappendstream(struct sockbuf *sb, struct mbuf *m)
{

	SOCKBUF_LOCK(sb);
	sbappendstream_locked(sb, m);
	SOCKBUF_UNLOCK(sb);
}
コード例 #3
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
void
sbflush(struct sockbuf *sb)
{

	SOCKBUF_LOCK(sb);
	sbflush_locked(sb);
	SOCKBUF_UNLOCK(sb);
}
コード例 #4
0
/*
 * Drop a record off the front of a sockbuf and move the next record to the
 * front.
 */
void
sbdroprecord(struct sockbuf *sb)
{

	SOCKBUF_LOCK(sb);
	sbdroprecord_locked(sb);
	SOCKBUF_UNLOCK(sb);
}
コード例 #5
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
void
sbrelease(struct sockbuf *sb, struct socket *so)
{

	SOCKBUF_LOCK(sb);
	sbrelease_locked(sb, so);
	SOCKBUF_UNLOCK(sb);
}
コード例 #6
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
void
sbdrop(struct sockbuf *sb, int len)
{

	SOCKBUF_LOCK(sb);
	sbdrop_locked(sb, len);
	SOCKBUF_UNLOCK(sb);
}
コード例 #7
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
void
socantsendmore(struct socket *so)
{

	SOCKBUF_LOCK(&so->so_snd);
	socantsendmore_locked(so);
	mtx_assert(SOCKBUF_MTX(&so->so_snd), MA_NOTOWNED);
}
コード例 #8
0
ファイル: uipc_sockbuf.c プロジェクト: 2asoft/freebsd
/*
 * This version of sbappend() should only be used when the caller absolutely
 * knows that there will never be more than one record in the socket buffer,
 * that is, a stream protocol (such as TCP).
 */
void
sbappendstream(struct sockbuf *sb, struct mbuf *m, int flags)
{

	SOCKBUF_LOCK(sb);
	sbappendstream_locked(sb, m, flags);
	SOCKBUF_UNLOCK(sb);
}
コード例 #9
0
ファイル: svc_vc.c プロジェクト: hmatyschok/MeshBSD
/*
 * Usage:
 *	xprt = svc_vc_create(sock, send_buf_size, recv_buf_size);
 *
 * Creates, registers, and returns a (rpc) tcp based transporter.
 * Once *xprt is initialized, it is registered as a transporter
 * see (svc.h, xprt_register).  This routine returns
 * a NULL if a problem occurred.
 *
 * The filedescriptor passed in is expected to refer to a bound, but
 * not yet connected socket.
 *
 * Since streams do buffered io similar to stdio, the caller can specify
 * how big the send and receive buffers are via the second and third parms;
 * 0 => use the system default.
 */
SVCXPRT *
svc_vc_create(SVCPOOL *pool, struct socket *so, size_t sendsize,
    size_t recvsize)
{
	SVCXPRT *xprt = NULL;
	struct sockaddr* sa;
	int error;

	SOCK_LOCK(so);
	if (so->so_state & (SS_ISCONNECTED|SS_ISDISCONNECTED)) {
		SOCK_UNLOCK(so);
		CURVNET_SET(so->so_vnet);
		error = so->so_proto->pr_usrreqs->pru_peeraddr(so, &sa);
		CURVNET_RESTORE();
		if (error)
			return (NULL);
		xprt = svc_vc_create_conn(pool, so, sa);
		free(sa, M_SONAME);
		return (xprt);
	}
	SOCK_UNLOCK(so);

	xprt = svc_xprt_alloc();
	sx_init(&xprt->xp_lock, "xprt->xp_lock");
	xprt->xp_pool = pool;
	xprt->xp_socket = so;
	xprt->xp_p1 = NULL;
	xprt->xp_p2 = NULL;
	xprt->xp_ops = &svc_vc_rendezvous_ops;

	CURVNET_SET(so->so_vnet);
	error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
	CURVNET_RESTORE();
	if (error) {
		goto cleanup_svc_vc_create;
	}

	memcpy(&xprt->xp_ltaddr, sa, sa->sa_len);
	free(sa, M_SONAME);

	xprt_register(xprt);

	solisten(so, -1, curthread);

	SOCKBUF_LOCK(&so->so_rcv);
	xprt->xp_upcallset = 1;
	soupcall_set(so, SO_RCV, svc_vc_soupcall, xprt);
	SOCKBUF_UNLOCK(&so->so_rcv);

	return (xprt);
cleanup_svc_vc_create:
	if (xprt) {
		sx_destroy(&xprt->xp_lock);
		svc_xprt_free(xprt);
	}
	return (NULL);
}
コード例 #10
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
int
sbappendcontrol(struct sockbuf *sb, struct mbuf *m0, struct mbuf *control)
{
	int retval;

	SOCKBUF_LOCK(sb);
	retval = sbappendcontrol_locked(sb, m0, control);
	SOCKBUF_UNLOCK(sb);
	return (retval);
}
コード例 #11
0
ファイル: svc_dg.c プロジェクト: AhmadTux/freebsd
SVCXPRT *
svc_dg_create(SVCPOOL *pool, struct socket *so, size_t sendsize,
    size_t recvsize)
{
	SVCXPRT *xprt;
	struct __rpc_sockinfo si;
	struct sockaddr* sa;
	int error;

	if (!__rpc_socket2sockinfo(so, &si)) {
		printf(svc_dg_str, svc_dg_err1);
		return (NULL);
	}
	/*
	 * Find the receive and the send size
	 */
	sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
	recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
	if ((sendsize == 0) || (recvsize == 0)) {
		printf(svc_dg_str, svc_dg_err2);
		return (NULL);
	}

	xprt = svc_xprt_alloc();
	sx_init(&xprt->xp_lock, "xprt->xp_lock");
	xprt->xp_pool = pool;
	xprt->xp_socket = so;
	xprt->xp_p1 = NULL;
	xprt->xp_p2 = NULL;
	xprt->xp_ops = &svc_dg_ops;

	CURVNET_SET(so->so_vnet);
	error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
	CURVNET_RESTORE();
	if (error)
		goto freedata;

	memcpy(&xprt->xp_ltaddr, sa, sa->sa_len);
	free(sa, M_SONAME);

	xprt_register(xprt);

	SOCKBUF_LOCK(&so->so_rcv);
	soupcall_set(so, SO_RCV, svc_dg_soupcall, xprt);
	SOCKBUF_UNLOCK(&so->so_rcv);

	return (xprt);
freedata:
	(void) printf(svc_dg_str, __no_mem_str);
	if (xprt) {
		svc_xprt_free(xprt);
	}
	return (NULL);
}
コード例 #12
0
ファイル: uipc_sockbuf.c プロジェクト: diegows/wanproxy
int
sbreserve(struct sockbuf *sb, u_long cc, struct socket *so, 
    struct thread *td)
{
	int error;

	SOCKBUF_LOCK(sb);
	error = sbreserve_locked(sb, cc, so, td);
	SOCKBUF_UNLOCK(sb);
	return (error);
}
コード例 #13
0
ファイル: udp6_usrreq.c プロジェクト: JasonFord53/freebsd
static int
udp6_append(struct inpcb *inp, struct mbuf *n, int off,
    struct sockaddr_in6 *fromsa)
{
	struct socket *so;
	struct mbuf *opts;
	struct udpcb *up;

	INP_LOCK_ASSERT(inp);

	/*
	 * Engage the tunneling protocol.
	 */
	up = intoudpcb(inp);
	if (up->u_tun_func != NULL) {
		in_pcbref(inp);
		INP_RUNLOCK(inp);
		(*up->u_tun_func)(n, off, inp, (struct sockaddr *)fromsa,
		    up->u_tun_ctx);
		INP_RLOCK(inp);
		return (in_pcbrele_rlocked(inp));
	}
#ifdef IPSEC
	/* Check AH/ESP integrity. */
	if (ipsec6_in_reject(n, inp)) {
		m_freem(n);
		return (0);
	}
#endif /* IPSEC */
#ifdef MAC
	if (mac_inpcb_check_deliver(inp, n) != 0) {
		m_freem(n);
		return (0);
	}
#endif
	opts = NULL;
	if (inp->inp_flags & INP_CONTROLOPTS ||
	    inp->inp_socket->so_options & SO_TIMESTAMP)
		ip6_savecontrol(inp, n, &opts);
	m_adj(n, off + sizeof(struct udphdr));

	so = inp->inp_socket;
	SOCKBUF_LOCK(&so->so_rcv);
	if (sbappendaddr_locked(&so->so_rcv, (struct sockaddr *)fromsa, n,
	    opts) == 0) {
		SOCKBUF_UNLOCK(&so->so_rcv);
		m_freem(n);
		if (opts)
			m_freem(opts);
		UDPSTAT_INC(udps_fullsock);
	} else
		sorwakeup_locked(so);
	return (0);
}
コード例 #14
0
void
sbdrop(struct sockbuf *sb, int len)
{
	struct mbuf *mfree;

	SOCKBUF_LOCK(sb);
	mfree = sbcut_internal(sb, len);
	SOCKBUF_UNLOCK(sb);

	m_freem(mfree);
}
コード例 #15
0
/*
 * Append address and data, and optionally, control (ancillary) data to the
 * receive queue of a socket.  If present, m0 must include a packet header
 * with total length.  Returns 0 if no space in sockbuf or insufficient
 * mbufs.
 */
int
sbappendaddr(struct sockbuf *sb, const struct sockaddr *asa,
    struct mbuf *m0, struct mbuf *control)
{
	int retval;

	SOCKBUF_LOCK(sb);
	retval = sbappendaddr_locked(sb, asa, m0, control);
	SOCKBUF_UNLOCK(sb);
	return (retval);
}
コード例 #16
0
ファイル: t4_cpl_io.c プロジェクト: 2asoft/freebsd
void
t4_rcvd(struct toedev *tod, struct tcpcb *tp)
{
	struct inpcb *inp = tp->t_inpcb;
	struct socket *so = inp->inp_socket;
	struct sockbuf *sb = &so->so_rcv;

	SOCKBUF_LOCK(sb);
	t4_rcvd_locked(tod, tp);
	SOCKBUF_UNLOCK(sb);
}
コード例 #17
0
ファイル: t4_tom.c プロジェクト: dcui/FreeBSD-9.3_kernel
/*
 * Set up the socket for TCP offload.
 */
void
offload_socket(struct socket *so, struct toepcb *toep)
{
	struct tom_data *td = toep->td;
	struct inpcb *inp = sotoinpcb(so);
	struct tcpcb *tp = intotcpcb(inp);
	struct sockbuf *sb;

	INP_WLOCK_ASSERT(inp);

	/* Update socket */
	sb = &so->so_snd;
	SOCKBUF_LOCK(sb);
	sb->sb_flags |= SB_NOCOALESCE;
	SOCKBUF_UNLOCK(sb);
	sb = &so->so_rcv;
	SOCKBUF_LOCK(sb);
	sb->sb_flags |= SB_NOCOALESCE;
	if (toep->ulp_mode == ULP_MODE_TCPDDP) {
		if (inp->inp_vflag & INP_IPV6)
			so->so_proto = &ddp6_protosw;
		else
			so->so_proto = &ddp_protosw;
	}
	SOCKBUF_UNLOCK(sb);

	/* Update TCP PCB */
	tp->tod = &td->tod;
	tp->t_toe = toep;
	tp->t_flags |= TF_TOE;

	/* Install an extra hold on inp */
	toep->inp = inp;
	toep->flags |= TPF_ATTACHED;
	in_pcbref(inp);

	/* Add the TOE PCB to the active list */
	mtx_lock(&td->toep_list_lock);
	TAILQ_INSERT_HEAD(&td->toep_list, toep, link);
	mtx_unlock(&td->toep_list_lock);
}
コード例 #18
0
ファイル: sys_socket.c プロジェクト: 2trill2spill/freebsd
static int
soo_stat(struct file *fp, struct stat *ub, struct ucred *active_cred,
    struct thread *td)
{
	struct socket *so = fp->f_data;
#ifdef MAC
	int error;
#endif

	bzero((caddr_t)ub, sizeof (*ub));
	ub->st_mode = S_IFSOCK;
#ifdef MAC
	error = mac_socket_check_stat(active_cred, so);
	if (error)
		return (error);
#endif
	if (!SOLISTENING(so)) {
		struct sockbuf *sb;

		/*
		 * If SBS_CANTRCVMORE is set, but there's still data left
		 * in the receive buffer, the socket is still readable.
		 */
		sb = &so->so_rcv;
		SOCKBUF_LOCK(sb);
		if ((sb->sb_state & SBS_CANTRCVMORE) == 0 || sbavail(sb))
			ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
		ub->st_size = sbavail(sb) - sb->sb_ctl;
		SOCKBUF_UNLOCK(sb);
	
		sb = &so->so_snd;
		SOCKBUF_LOCK(sb);
		if ((sb->sb_state & SBS_CANTSENDMORE) == 0)
			ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
		SOCKBUF_UNLOCK(sb);
	}
	ub->st_uid = so->so_cred->cr_uid;
	ub->st_gid = so->so_cred->cr_gid;
	return (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
}
コード例 #19
0
ファイル: ng_ksocket.c プロジェクト: juanfra684/DragonFlyBSD
/*
 * Destroy node
 */
static int
ng_ksocket_shutdown(node_p node)
{
	const priv_p priv = NG_NODE_PRIVATE(node);
	priv_p embryo;

	/* Close our socket (if any) */
	if (priv->so != NULL) {
		SOCKBUF_LOCK(&priv->so->so_rcv);
		priv->so->so_rcv.sb_flags &= ~SB_UPCALL;
		SOCKBUF_UNLOCK(&priv->so->so_rcv);
		SOCKBUF_LOCK(&priv->so->so_snd);
		priv->so->so_snd.sb_flags &= ~SB_UPCALL;
		SOCKBUF_UNLOCK(&priv->so->so_snd);
		priv->so->so_upcall = NULL;
		soclose(priv->so);
		priv->so = NULL;
	}

	/* If we are an embryo, take ourselves out of the parent's list */
	if (priv->flags & KSF_EMBRYONIC) {
		LIST_REMOVE(priv, siblings);
		priv->flags &= ~KSF_EMBRYONIC;
	}

	/* Remove any embryonic children we have */
	while (!LIST_EMPTY(&priv->embryos)) {
		embryo = LIST_FIRST(&priv->embryos);
		ng_rmnode_self(embryo->node);
	}

	/* Take down netgraph node */
	bzero(priv, sizeof(*priv));
	kfree(priv, M_NETGRAPH);
	NG_NODE_SET_PRIVATE(node, NULL);
	NG_NODE_UNREF(node);		/* let the node escape */
	return (0);
}
コード例 #20
0
ファイル: p9fs_vfsops.c プロジェクト: wca/p9fs
/*
 * XXX Need to implement reconnecting as necessary.  If that were to be
 *     needed, most likely all current vnodes would have to be renegotiated
 *     or otherwise invalidated (a la NFS "stale file handle").
 */
static int
p9fs_connect(struct mount *mp)
{
	struct p9fsmount *p9mp = VFSTOP9(mp);
	struct p9fs_session *p9s = &p9mp->p9_session;
	struct socket *so;
	int error;

	error = socreate(p9s->p9s_sockaddr.sa_family, &p9s->p9s_sock,
	    p9s->p9s_socktype, p9s->p9s_proto, curthread->td_ucred, curthread);
	if (error != 0) {
		vfs_mount_error(mp, "socreate");
		goto out;
	}

	so = p9s->p9s_sock;
	error = soconnect(so, &p9s->p9s_sockaddr, curthread);
	SOCK_LOCK(so);
	while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
		error = msleep(&so->so_timeo, SOCK_MTX(so), PSOCK | PCATCH,
		    "connec", 0);
		if (error)
			break;
	}
	if (error == 0) {
		error = so->so_error;
		so->so_error = 0;
	}
	SOCK_UNLOCK(so);
	if (error) {
		vfs_mount_error(mp, "soconnect");
		if (error == EINTR)
			so->so_state &= ~SS_ISCONNECTING;
		goto out;
	}

	if (so->so_proto->pr_flags & PR_CONNREQUIRED)
		p9fs_setsockopt(so, SO_KEEPALIVE);
	if (so->so_proto->pr_protocol == IPPROTO_TCP)
		p9fs_setsockopt(so, TCP_NODELAY);

	SOCKBUF_LOCK(&so->so_rcv);
	soupcall_set(so, SO_RCV, p9fs_client_upcall, p9mp);
	SOCKBUF_UNLOCK(&so->so_rcv);

	error = 0;

out:
	return (error);
}
コード例 #21
0
ファイル: sdp_rx.c プロジェクト: Lxg1582/freebsd
static inline struct mbuf *
sdp_sock_queue_rcv_mb(struct socket *sk, struct mbuf *mb)
{
	struct sdp_sock *ssk = sdp_sk(sk);
	struct sdp_bsdh *h;

	h = mtod(mb, struct sdp_bsdh *);

#ifdef SDP_ZCOPY
	SDP_SKB_CB(mb)->seq = rcv_nxt(ssk);
	if (h->mid == SDP_MID_SRCAVAIL) {
		struct sdp_srcah *srcah = (struct sdp_srcah *)(h+1);
		struct rx_srcavail_state *rx_sa;
		
		ssk->srcavail_cancel_mseq = 0;

		ssk->rx_sa = rx_sa = RX_SRCAVAIL_STATE(mb) = kzalloc(
				sizeof(struct rx_srcavail_state), M_NOWAIT);

		rx_sa->mseq = ntohl(h->mseq);
		rx_sa->used = 0;
		rx_sa->len = mb_len = ntohl(srcah->len);
		rx_sa->rkey = ntohl(srcah->rkey);
		rx_sa->vaddr = be64_to_cpu(srcah->vaddr);
		rx_sa->flags = 0;

		if (ssk->tx_sa) {
			sdp_dbg_data(ssk->socket, "got RX SrcAvail while waiting "
					"for TX SrcAvail. waking up TX SrcAvail"
					"to be aborted\n");
			wake_up(sk->sk_sleep);
		}

		atomic_add(mb->len, &ssk->rcv_nxt);
		sdp_dbg_data(sk, "queueing SrcAvail. mb_len = %d vaddr = %lld\n",
			mb_len, rx_sa->vaddr);
	} else
#endif
	{
		atomic_add(mb->m_pkthdr.len, &ssk->rcv_nxt);
	}

	m_adj(mb, SDP_HEAD_SIZE);
	SOCKBUF_LOCK(&sk->so_rcv);
	if (unlikely(h->flags & SDP_OOB_PRES))
		sdp_urg(ssk, mb);
	sbappend_locked(&sk->so_rcv, mb);
	sorwakeup_locked(sk);
	return mb;
}
コード例 #22
0
ファイル: svc_dg.c プロジェクト: AhmadTux/freebsd
static void
svc_dg_destroy(SVCXPRT *xprt)
{

	SOCKBUF_LOCK(&xprt->xp_socket->so_rcv);
	soupcall_clear(xprt->xp_socket, SO_RCV);
	SOCKBUF_UNLOCK(&xprt->xp_socket->so_rcv);

	sx_destroy(&xprt->xp_lock);
	if (xprt->xp_socket)
		(void)soclose(xprt->xp_socket);

	if (xprt->xp_netid)
		(void) mem_free(xprt->xp_netid, strlen(xprt->xp_netid) + 1);
	svc_xprt_free(xprt);
}
コード例 #23
0
ファイル: svc_vc.c プロジェクト: hmatyschok/MeshBSD
static void
svc_vc_destroy_common(SVCXPRT *xprt)
{
	SOCKBUF_LOCK(&xprt->xp_socket->so_rcv);
	if (xprt->xp_upcallset) {
		xprt->xp_upcallset = 0;
		soupcall_clear(xprt->xp_socket, SO_RCV);
	}
	SOCKBUF_UNLOCK(&xprt->xp_socket->so_rcv);

	if (xprt->xp_socket)
		(void)soclose(xprt->xp_socket);

	if (xprt->xp_netid)
		(void) mem_free(xprt->xp_netid, strlen(xprt->xp_netid) + 1);
	svc_xprt_free(xprt);
}
コード例 #24
0
ファイル: send.c プロジェクト: FreeBSDFoundation/freebsd
/*
 * Send a SeND message to user space, that was either received and has to be
 * validated or was about to be send out and has to be handled by the SEND
 * daemon adding SeND ICMPv6 options.
 */
static int
send_input(struct mbuf *m, struct ifnet *ifp, int direction, int msglen __unused)
{
	struct ip6_hdr *ip6;
	struct sockaddr_send sendsrc;

	SEND_LOCK();
	if (V_send_so == NULL) {
		SEND_UNLOCK();
		return (-1);
	}

	/*
	 * Make sure to clear any possible internally embedded scope before
	 * passing the packet to user space for SeND cryptographic signature
	 * validation to succeed.
	 */
	ip6 = mtod(m, struct ip6_hdr *);
	in6_clearscope(&ip6->ip6_src);
	in6_clearscope(&ip6->ip6_dst);

	bzero(&sendsrc, sizeof(sendsrc));
	sendsrc.send_len = sizeof(sendsrc);
	sendsrc.send_family = AF_INET6;
	sendsrc.send_direction = direction;
	sendsrc.send_ifidx = ifp->if_index;

	/*
	 * Send incoming or outgoing traffic to user space either to be
	 * protected (outgoing) or validated (incoming) according to rfc3971.
	 */
	SOCKBUF_LOCK(&V_send_so->so_rcv);
	if (sbappendaddr_locked(&V_send_so->so_rcv,
	    (struct sockaddr *)&sendsrc, m, NULL) == 0) {
		SOCKBUF_UNLOCK(&V_send_so->so_rcv);
		/* XXX stats. */
		m_freem(m);
	} else {
		sorwakeup_locked(V_send_so);
	}

	SEND_UNLOCK();
	return (0);
}
コード例 #25
0
ファイル: sys_socket.c プロジェクト: Digital-Chaos/freebsd
static int
soo_aio_queue(struct file *fp, struct kaiocb *job)
{
	struct socket *so;
	struct sockbuf *sb;
	int error;

	so = fp->f_data;
	error = (*so->so_proto->pr_usrreqs->pru_aio_queue)(so, job);
	if (error == 0)
		return (0);

	switch (job->uaiocb.aio_lio_opcode) {
	case LIO_READ:
		sb = &so->so_rcv;
		break;
	case LIO_WRITE:
		sb = &so->so_snd;
		break;
	default:
		return (EINVAL);
	}

	SOCKBUF_LOCK(sb);
	if (!aio_set_cancel_function(job, soo_aio_cancel))
		panic("new job was cancelled");
	TAILQ_INSERT_TAIL(&sb->sb_aiojobq, job, list);
	if (!(sb->sb_flags & SB_AIO_RUNNING)) {
		if (soaio_ready(so, sb))
			sowakeup_aio(so, sb);
		else
			sb->sb_flags |= SB_AIO;
	}
	SOCKBUF_UNLOCK(sb);
	return (0);
}
コード例 #26
0
/*
 * Do a send by putting data in output queue and updating urgent
 * marker if URG set.  Possibly send more data.  Unlike the other
 * pru_*() routines, the mbuf chains are our responsibility.  We
 * must either enqueue them or free them.  The other pru_* routines
 * generally are caller-frees.
 */
static int
tcp_usr_send(struct socket *so, int flags, struct mbuf *m,
    struct sockaddr *nam, struct mbuf *control, struct thread *td)
{
	int error = 0;
	struct inpcb *inp;
	struct tcpcb *tp = NULL;
	int headlocked = 0;
#ifdef INET6
	int isipv6;
#endif
	TCPDEBUG0;

	/*
	 * We require the pcbinfo lock in two cases:
	 *
	 * (1) An implied connect is taking place, which can result in
	 *     binding IPs and ports and hence modification of the pcb hash
	 *     chains.
	 *
	 * (2) PRUS_EOF is set, resulting in explicit close on the send.
	 */
	if ((nam != NULL) || (flags & PRUS_EOF)) {
		INP_INFO_WLOCK(&V_tcbinfo);
		headlocked = 1;
	}
	inp = sotoinpcb(so);
	KASSERT(inp != NULL, ("tcp_usr_send: inp == NULL"));
	INP_WLOCK(inp);
	if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) {
		if (control)
			m_freem(control);
		if (m)
			m_freem(m);
		error = ECONNRESET;
		goto out;
	}
#ifdef INET6
	isipv6 = nam && nam->sa_family == AF_INET6;
#endif /* INET6 */
	tp = intotcpcb(inp);
	TCPDEBUG1();
	if (control) {
		/* TCP doesn't do control messages (rights, creds, etc) */
		if (control->m_len) {
			m_freem(control);
			if (m)
				m_freem(m);
			error = EINVAL;
			goto out;
		}
		m_freem(control);	/* empty control, just free it */
	}
	if (!(flags & PRUS_OOB)) {
		sbappendstream(&so->so_snd, m);
		if (nam && tp->t_state < TCPS_SYN_SENT) {
			/*
			 * Do implied connect if not yet connected,
			 * initialize window to default value, and
			 * initialize maxseg/maxopd using peer's cached
			 * MSS.
			 */
			INP_INFO_WLOCK_ASSERT(&V_tcbinfo);
#ifdef INET6
			if (isipv6)
				error = tcp6_connect(tp, nam, td);
			else
#endif /* INET6 */
			error = tcp_connect(tp, nam, td);
			if (error)
				goto out;
			tp->snd_wnd = TTCP_CLIENT_SND_WND;
			tcp_mss(tp, -1);
		}
		if (flags & PRUS_EOF) {
			/*
			 * Close the send side of the connection after
			 * the data is sent.
			 */
			INP_INFO_WLOCK_ASSERT(&V_tcbinfo);
			socantsendmore(so);
			tcp_usrclosed(tp);
		}
		if (headlocked) {
			INP_INFO_WUNLOCK(&V_tcbinfo);
			headlocked = 0;
		}
		if (!(inp->inp_flags & INP_DROPPED)) {
			if (flags & PRUS_MORETOCOME)
				tp->t_flags |= TF_MORETOCOME;
			error = tcp_output_send(tp);
			if (flags & PRUS_MORETOCOME)
				tp->t_flags &= ~TF_MORETOCOME;
		}
	} else {
		/*
		 * XXXRW: PRUS_EOF not implemented with PRUS_OOB?
		 */
		SOCKBUF_LOCK(&so->so_snd);
		if (sbspace(&so->so_snd) < -512) {
			SOCKBUF_UNLOCK(&so->so_snd);
			m_freem(m);
			error = ENOBUFS;
			goto out;
		}
		/*
		 * According to RFC961 (Assigned Protocols),
		 * the urgent pointer points to the last octet
		 * of urgent data.  We continue, however,
		 * to consider it to indicate the first octet
		 * of data past the urgent section.
		 * Otherwise, snd_up should be one lower.
		 */
		sbappendstream_locked(&so->so_snd, m);
		SOCKBUF_UNLOCK(&so->so_snd);
		if (nam && tp->t_state < TCPS_SYN_SENT) {
			/*
			 * Do implied connect if not yet connected,
			 * initialize window to default value, and
			 * initialize maxseg/maxopd using peer's cached
			 * MSS.
			 */
			INP_INFO_WLOCK_ASSERT(&V_tcbinfo);
#ifdef INET6
			if (isipv6)
				error = tcp6_connect(tp, nam, td);
			else
#endif /* INET6 */
			error = tcp_connect(tp, nam, td);
			if (error)
				goto out;
			tp->snd_wnd = TTCP_CLIENT_SND_WND;
			tcp_mss(tp, -1);
			INP_INFO_WUNLOCK(&V_tcbinfo);
			headlocked = 0;
		} else if (nam) {
			INP_INFO_WUNLOCK(&V_tcbinfo);
			headlocked = 0;
		}
		tp->snd_up = tp->snd_una + so->so_snd.sb_cc;
		tp->t_flags |= TF_FORCEDATA;
		error = tcp_output_send(tp);
		tp->t_flags &= ~TF_FORCEDATA;
	}
out:
	TCPDEBUG2((flags & PRUS_OOB) ? PRU_SENDOOB :
		  ((flags & PRUS_EOF) ? PRU_SEND_EOF : PRU_SEND));
	INP_WUNLOCK(inp);
	if (headlocked)
		INP_INFO_WUNLOCK(&V_tcbinfo);
	return (error);
}
コード例 #27
0
ファイル: t4_connect.c プロジェクト: JabirTech/Source
/*
 * active open (soconnect).
 *
 * State of affairs on entry:
 * soisconnecting (so_state |= SS_ISCONNECTING)
 * tcbinfo not locked (This has changed - used to be WLOCKed)
 * inp WLOCKed
 * tp->t_state = TCPS_SYN_SENT
 * rtalloc1, RT_UNLOCK on rt.
 */
int
t4_connect(struct toedev *tod, struct socket *so, struct rtentry *rt,
    struct sockaddr *nam)
{
	struct adapter *sc = tod->tod_softc;
	struct tom_data *td = tod_td(tod);
	struct toepcb *toep = NULL;
	struct wrqe *wr = NULL;
	struct ifnet *rt_ifp = rt->rt_ifp;
	struct port_info *pi;
	int mtu_idx, rscale, qid_atid, rc, isipv6;
	struct inpcb *inp = sotoinpcb(so);
	struct tcpcb *tp = intotcpcb(inp);
	int reason;

	INP_WLOCK_ASSERT(inp);
	KASSERT(nam->sa_family == AF_INET || nam->sa_family == AF_INET6,
	    ("%s: dest addr %p has family %u", __func__, nam, nam->sa_family));

	if (rt_ifp->if_type == IFT_ETHER)
		pi = rt_ifp->if_softc;
	else if (rt_ifp->if_type == IFT_L2VLAN) {
		struct ifnet *ifp = VLAN_COOKIE(rt_ifp);

		pi = ifp->if_softc;
	} else if (rt_ifp->if_type == IFT_IEEE8023ADLAG)
		DONT_OFFLOAD_ACTIVE_OPEN(ENOSYS); /* XXX: implement lagg+TOE */
	else
		DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);

	toep = alloc_toepcb(pi, -1, -1, M_NOWAIT);
	if (toep == NULL)
		DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);

	toep->tid = alloc_atid(sc, toep);
	if (toep->tid < 0)
		DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);

	toep->l2te = t4_l2t_get(pi, rt_ifp,
	    rt->rt_flags & RTF_GATEWAY ? rt->rt_gateway : nam);
	if (toep->l2te == NULL)
		DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);

	isipv6 = nam->sa_family == AF_INET6;
	wr = alloc_wrqe(act_open_cpl_size(sc, isipv6), toep->ctrlq);
	if (wr == NULL)
		DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);

	if (sc->tt.ddp && (so->so_options & SO_NO_DDP) == 0)
		set_tcpddp_ulp_mode(toep);
	else
		toep->ulp_mode = ULP_MODE_NONE;
	SOCKBUF_LOCK(&so->so_rcv);
	/* opt0 rcv_bufsiz initially, assumes its normal meaning later */
	toep->rx_credits = min(select_rcv_wnd(so) >> 10, M_RCV_BUFSIZ);
	SOCKBUF_UNLOCK(&so->so_rcv);

	/*
	 * The kernel sets request_r_scale based on sb_max whereas we need to
	 * take hardware's MAX_RCV_WND into account too.  This is normally a
	 * no-op as MAX_RCV_WND is much larger than the default sb_max.
	 */
	if (tp->t_flags & TF_REQ_SCALE)
		rscale = tp->request_r_scale = select_rcv_wscale();
	else
		rscale = 0;
	mtu_idx = find_best_mtu_idx(sc, &inp->inp_inc, 0);
	qid_atid = (toep->ofld_rxq->iq.abs_id << 14) | toep->tid;

	if (isipv6) {
		struct cpl_act_open_req6 *cpl = wrtod(wr);

		if ((inp->inp_vflag & INP_IPV6) == 0) {
			/* XXX think about this a bit more */
			log(LOG_ERR,
			    "%s: time to think about AF_INET6 + vflag 0x%x.\n",
			    __func__, inp->inp_vflag);
			DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
		}

		toep->ce = hold_lip(td, &inp->in6p_laddr);
		if (toep->ce == NULL)
			DONT_OFFLOAD_ACTIVE_OPEN(ENOENT);

		if (is_t4(sc)) {
			INIT_TP_WR(cpl, 0);
			cpl->params = select_ntuple(pi, toep->l2te);
		} else {
			struct cpl_t5_act_open_req6 *c5 = (void *)cpl;

			INIT_TP_WR(c5, 0);
			c5->iss = htobe32(tp->iss);
			c5->params = select_ntuple(pi, toep->l2te);
		}
		OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
		    qid_atid));
		cpl->local_port = inp->inp_lport;
		cpl->local_ip_hi = *(uint64_t *)&inp->in6p_laddr.s6_addr[0];
		cpl->local_ip_lo = *(uint64_t *)&inp->in6p_laddr.s6_addr[8];
		cpl->peer_port = inp->inp_fport;
		cpl->peer_ip_hi = *(uint64_t *)&inp->in6p_faddr.s6_addr[0];
		cpl->peer_ip_lo = *(uint64_t *)&inp->in6p_faddr.s6_addr[8];
		cpl->opt0 = calc_opt0(so, pi, toep->l2te, mtu_idx, rscale,
		    toep->rx_credits, toep->ulp_mode);
		cpl->opt2 = calc_opt2a(so, toep);
	} else {
		struct cpl_act_open_req *cpl = wrtod(wr);

		if (is_t4(sc)) {
			INIT_TP_WR(cpl, 0);
			cpl->params = select_ntuple(pi, toep->l2te);
		} else {
			struct cpl_t5_act_open_req *c5 = (void *)cpl;

			INIT_TP_WR(c5, 0);
			c5->iss = htobe32(tp->iss);
			c5->params = select_ntuple(pi, toep->l2te);
		}
		OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
		    qid_atid));
		inp_4tuple_get(inp, &cpl->local_ip, &cpl->local_port,
		    &cpl->peer_ip, &cpl->peer_port);
		cpl->opt0 = calc_opt0(so, pi, toep->l2te, mtu_idx, rscale,
		    toep->rx_credits, toep->ulp_mode);
		cpl->opt2 = calc_opt2a(so, toep);
	}

	CTR5(KTR_CXGBE, "%s: atid %u (%s), toep %p, inp %p", __func__,
	    toep->tid, tcpstates[tp->t_state], toep, inp);

	offload_socket(so, toep);
	rc = t4_l2t_send(sc, wr, toep->l2te);
	if (rc == 0) {
		toep->flags |= TPF_CPL_PENDING;
		return (0);
	}

	undo_offload_socket(so);
	reason = __LINE__;
failed:
	CTR3(KTR_CXGBE, "%s: not offloading (%d), rc %d", __func__, reason, rc);

	if (wr)
		free_wrqe(wr);

	if (toep) {
		if (toep->tid >= 0)
			free_atid(sc, toep->tid);
		if (toep->l2te)
			t4_l2t_release(toep->l2te);
		if (toep->ce)
			release_lip(td, toep->ce);
		free_toepcb(toep);
	}

	return (rc);
}
コード例 #28
0
static bool_t
svc_vc_recv(SVCXPRT *xprt, struct rpc_msg *msg,
    struct sockaddr **addrp, struct mbuf **mp)
{
	struct cf_conn *cd = (struct cf_conn *) xprt->xp_p1;
	struct uio uio;
	struct mbuf *m;
	XDR xdrs;
	int error, rcvflag;

	/*
	 * Serialise access to the socket and our own record parsing
	 * state.
	 */
	sx_xlock(&xprt->xp_lock);

	for (;;) {
		/*
		 * If we have an mbuf chain in cd->mpending, try to parse a
		 * record from it, leaving the result in cd->mreq. If we don't
		 * have a complete record, leave the partial result in
		 * cd->mreq and try to read more from the socket.
		 */
		if (cd->mpending) {
			/*
			 * If cd->resid is non-zero, we have part of the
			 * record already, otherwise we are expecting a record
			 * marker.
			 */
			if (!cd->resid) {
				/*
				 * See if there is enough data buffered to
				 * make up a record marker. Make sure we can
				 * handle the case where the record marker is
				 * split across more than one mbuf.
				 */
				size_t n = 0;
				uint32_t header;

				m = cd->mpending;
				while (n < sizeof(uint32_t) && m) {
					n += m->m_len;
					m = m->m_next;
				}
				if (n < sizeof(uint32_t))
					goto readmore;
				if (cd->mpending->m_len < sizeof(uint32_t))
					cd->mpending = m_pullup(cd->mpending,
					    sizeof(uint32_t));
				memcpy(&header, mtod(cd->mpending, uint32_t *),
				    sizeof(header));
				header = ntohl(header);
				cd->eor = (header & 0x80000000) != 0;
				cd->resid = header & 0x7fffffff;
				m_adj(cd->mpending, sizeof(uint32_t));
			}

			/*
			 * Start pulling off mbufs from cd->mpending
			 * until we either have a complete record or
			 * we run out of data. We use m_split to pull
			 * data - it will pull as much as possible and
			 * split the last mbuf if necessary.
			 */
			while (cd->mpending && cd->resid) {
				m = cd->mpending;
				if (cd->mpending->m_next
				    || cd->mpending->m_len > cd->resid)
					cd->mpending = m_split(cd->mpending,
					    cd->resid, M_WAIT);
				else
					cd->mpending = NULL;
				if (cd->mreq)
					m_last(cd->mreq)->m_next = m;
				else
					cd->mreq = m;
				while (m) {
					cd->resid -= m->m_len;
					m = m->m_next;
				}
			}

			/*
			 * If cd->resid is zero now, we have managed to
			 * receive a record fragment from the stream. Check
			 * for the end-of-record mark to see if we need more.
			 */
			if (cd->resid == 0) {
				if (!cd->eor)
					continue;

				/*
				 * Success - we have a complete record in
				 * cd->mreq.
				 */
				xdrmbuf_create(&xdrs, cd->mreq, XDR_DECODE);
				cd->mreq = NULL;
				sx_xunlock(&xprt->xp_lock);

				if (! xdr_callmsg(&xdrs, msg)) {
					XDR_DESTROY(&xdrs);
					return (FALSE);
				}

				*addrp = NULL;
				*mp = xdrmbuf_getall(&xdrs);
				XDR_DESTROY(&xdrs);

				return (TRUE);
			}
		}

	readmore:
		/*
		 * The socket upcall calls xprt_active() which will eventually
		 * cause the server to call us here. We attempt to
		 * read as much as possible from the socket and put
		 * the result in cd->mpending. If the read fails,
		 * we have drained both cd->mpending and the socket so
		 * we can call xprt_inactive().
		 */
		uio.uio_resid = 1000000000;
		uio.uio_td = curthread;
		m = NULL;
		rcvflag = MSG_DONTWAIT;
		CURVNET_SET(xprt->xp_socket->so_vnet);
		error = soreceive(xprt->xp_socket, NULL, &uio, &m, NULL,
		    &rcvflag);
		CURVNET_RESTORE();

		if (error == EWOULDBLOCK) {
			/*
			 * We must re-test for readability after
			 * taking the lock to protect us in the case
			 * where a new packet arrives on the socket
			 * after our call to soreceive fails with
			 * EWOULDBLOCK. The pool lock protects us from
			 * racing the upcall after our soreadable()
			 * call returns false.
			 */
			mtx_lock(&xprt->xp_pool->sp_lock);
			if (!soreadable(xprt->xp_socket))
				xprt_inactive_locked(xprt);
			mtx_unlock(&xprt->xp_pool->sp_lock);
			sx_xunlock(&xprt->xp_lock);
			return (FALSE);
		}

		if (error) {
			SOCKBUF_LOCK(&xprt->xp_socket->so_rcv);
			if (xprt->xp_upcallset) {
				xprt->xp_upcallset = 0;
				soupcall_clear(xprt->xp_socket, SO_RCV);
			}
			SOCKBUF_UNLOCK(&xprt->xp_socket->so_rcv);
			xprt_inactive(xprt);
			cd->strm_stat = XPRT_DIED;
			sx_xunlock(&xprt->xp_lock);
			return (FALSE);
		}

		if (!m) {
			/*
			 * EOF - the other end has closed the socket.
			 */
			xprt_inactive(xprt);
			cd->strm_stat = XPRT_DIED;
			sx_xunlock(&xprt->xp_lock);
			return (FALSE);
		}

		if (cd->mpending)
			m_last(cd->mpending)->m_next = m;
		else
			cd->mpending = m;
	}
コード例 #29
0
/*ARGSUSED*/
static bool_t
svc_vc_rendezvous_recv(SVCXPRT *xprt, struct rpc_msg *msg,
    struct sockaddr **addrp, struct mbuf **mp)
{
	struct socket *so = NULL;
	struct sockaddr *sa = NULL;
	int error;
	SVCXPRT *new_xprt;

	/*
	 * The socket upcall calls xprt_active() which will eventually
	 * cause the server to call us here. We attempt to accept a
	 * connection from the socket and turn it into a new
	 * transport. If the accept fails, we have drained all pending
	 * connections so we call xprt_inactive().
	 */
	sx_xlock(&xprt->xp_lock);

	error = svc_vc_accept(xprt->xp_socket, &so);

	if (error == EWOULDBLOCK) {
		/*
		 * We must re-test for new connections after taking
		 * the lock to protect us in the case where a new
		 * connection arrives after our call to accept fails
		 * with EWOULDBLOCK. The pool lock protects us from
		 * racing the upcall after our TAILQ_EMPTY() call
		 * returns false.
		 */
		ACCEPT_LOCK();
		mtx_lock(&xprt->xp_pool->sp_lock);
		if (TAILQ_EMPTY(&xprt->xp_socket->so_comp))
			xprt_inactive_locked(xprt);
		mtx_unlock(&xprt->xp_pool->sp_lock);
		ACCEPT_UNLOCK();
		sx_xunlock(&xprt->xp_lock);
		return (FALSE);
	}

	if (error) {
		SOCKBUF_LOCK(&xprt->xp_socket->so_rcv);
		if (xprt->xp_upcallset) {
			xprt->xp_upcallset = 0;
			soupcall_clear(xprt->xp_socket, SO_RCV);
		}
		SOCKBUF_UNLOCK(&xprt->xp_socket->so_rcv);
		xprt_inactive(xprt);
		sx_xunlock(&xprt->xp_lock);
		return (FALSE);
	}

	sx_xunlock(&xprt->xp_lock);

	sa = 0;
	error = soaccept(so, &sa);

	if (error) {
		/*
		 * XXX not sure if I need to call sofree or soclose here.
		 */
		if (sa)
			free(sa, M_SONAME);
		return (FALSE);
	}

	/*
	 * svc_vc_create_conn will call xprt_register - we don't need
	 * to do anything with the new connection except derefence it.
	 */
	new_xprt = svc_vc_create_conn(xprt->xp_pool, so, sa);
	if (!new_xprt) {
		soclose(so);
	} else {
		SVC_RELEASE(new_xprt);
	}

	free(sa, M_SONAME);

	return (FALSE); /* there is never an rpc msg to be processed */
}
コード例 #30
0
/*
 * Create a new transport for a socket optained via soaccept().
 */
SVCXPRT *
svc_vc_create_conn(SVCPOOL *pool, struct socket *so, struct sockaddr *raddr)
{
	SVCXPRT *xprt = NULL;
	struct cf_conn *cd = NULL;
	struct sockaddr* sa = NULL;
	struct sockopt opt;
	int one = 1;
	int error;

	bzero(&opt, sizeof(struct sockopt));
	opt.sopt_dir = SOPT_SET;
	opt.sopt_level = SOL_SOCKET;
	opt.sopt_name = SO_KEEPALIVE;
	opt.sopt_val = &one;
	opt.sopt_valsize = sizeof(one);
	CURVNET_SET(so->so_vnet);
	error = sosetopt(so, &opt);
	if (error) {
		CURVNET_RESTORE();
		return (NULL);
	}

	if (so->so_proto->pr_protocol == IPPROTO_TCP) {
		bzero(&opt, sizeof(struct sockopt));
		opt.sopt_dir = SOPT_SET;
		opt.sopt_level = IPPROTO_TCP;
		opt.sopt_name = TCP_NODELAY;
		opt.sopt_val = &one;
		opt.sopt_valsize = sizeof(one);
		error = sosetopt(so, &opt);
		if (error) {
			CURVNET_RESTORE();
			return (NULL);
		}
	}
	CURVNET_RESTORE();

	cd = mem_alloc(sizeof(*cd));
	cd->strm_stat = XPRT_IDLE;

	xprt = svc_xprt_alloc();
	sx_init(&xprt->xp_lock, "xprt->xp_lock");
	xprt->xp_pool = pool;
	xprt->xp_socket = so;
	xprt->xp_p1 = cd;
	xprt->xp_p2 = NULL;
	xprt->xp_ops = &svc_vc_ops;

	/*
	 * See http://www.connectathon.org/talks96/nfstcp.pdf - client
	 * has a 5 minute timer, server has a 6 minute timer.
	 */
	xprt->xp_idletimeout = 6 * 60;

	memcpy(&xprt->xp_rtaddr, raddr, raddr->sa_len);

	error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
	if (error)
		goto cleanup_svc_vc_create;

	memcpy(&xprt->xp_ltaddr, sa, sa->sa_len);
	free(sa, M_SONAME);

	xprt_register(xprt);

	SOCKBUF_LOCK(&so->so_rcv);
	xprt->xp_upcallset = 1;
	soupcall_set(so, SO_RCV, svc_vc_soupcall, xprt);
	SOCKBUF_UNLOCK(&so->so_rcv);

	/*
	 * Throw the transport into the active list in case it already
	 * has some data buffered.
	 */
	sx_xlock(&xprt->xp_lock);
	xprt_active(xprt);
	sx_xunlock(&xprt->xp_lock);

	return (xprt);
cleanup_svc_vc_create:
	if (xprt) {
		mem_free(xprt, sizeof(*xprt));
	}
	if (cd)
		mem_free(cd, sizeof(*cd));
	return (NULL);
}