18e198d3a3
- use proper tick gathering macro instead of ticks directly. - Placed reasonable boundaries on sets that a user can do that are converted to ticks from ms. - Fix CMT_PF to always check to be sure CMT is on. - Fix ticks use of CMT_PF. - put back code to allow asconfs to be queued while INITs are in flight and before the assoc is established. - During window probes, an ack'd packet might be left with the window probe mark on it causing it to be retransmitted. Change so that the flight decrease macro clears the window_probe mark. - Additional logging flight size/reading and ASOC LOG. This is only enabled if you manually insert things into opt_sctp.h since its a set of debug code only. - Found an interesting SMP race in the way data was appended which could cause a reader to lose a part of a message, had to reorder when we marked the message was complete to after the data was appended. - bug in ADD-IP for the subset bound socket case when the peer has only one address - fix ASCONF implicit success/error handling case - proper support of jails in Freebsd 6> - copy out the timeval for the 64 bit sparc world on cookie-echo alignment error crashes without this). Approved by: re(Ken Smith)
217 lines
6.9 KiB
C
217 lines
6.9 KiB
C
/*-
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $KAME: sctp_peeloff.c,v 1.13 2005/03/06 16:04:18 itojun Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <netinet/sctp_os.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_sysctl.h>
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#include <netinet/sctp.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctp_peeloff.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_auth.h>
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int
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sctp_can_peel_off(struct socket *head, sctp_assoc_t assoc_id)
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{
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struct sctp_inpcb *inp;
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struct sctp_tcb *stcb;
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uint32_t state;
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL) {
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return (EFAULT);
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}
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL) {
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return (ENOTCONN);
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}
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state = SCTP_GET_STATE((&stcb->asoc));
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if ((state == SCTP_STATE_EMPTY) ||
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(state == SCTP_STATE_INUSE) ||
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(state == SCTP_STATE_COOKIE_WAIT) ||
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(state == SCTP_STATE_COOKIE_ECHOED)) {
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SCTP_TCB_UNLOCK(stcb);
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return (ENOTCONN);
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}
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SCTP_TCB_UNLOCK(stcb);
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/* We are clear to peel this one off */
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return (0);
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}
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int
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sctp_do_peeloff(struct socket *head, struct socket *so, sctp_assoc_t assoc_id)
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{
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struct sctp_inpcb *inp, *n_inp;
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struct sctp_tcb *stcb;
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uint32_t state;
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL)
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return (EFAULT);
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL)
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return (ENOTCONN);
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state = SCTP_GET_STATE((&stcb->asoc));
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if ((state == SCTP_STATE_EMPTY) ||
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(state == SCTP_STATE_INUSE) ||
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(state == SCTP_STATE_COOKIE_WAIT) ||
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(state == SCTP_STATE_COOKIE_ECHOED)) {
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SCTP_TCB_UNLOCK(stcb);
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return (ENOTCONN);
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}
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n_inp = (struct sctp_inpcb *)so->so_pcb;
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n_inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
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SCTP_PCB_FLAGS_CONNECTED |
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SCTP_PCB_FLAGS_IN_TCPPOOL | /* Turn on Blocking IO */
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(SCTP_PCB_COPY_FLAGS & inp->sctp_flags));
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n_inp->sctp_socket = so;
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n_inp->sctp_features = inp->sctp_features;
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n_inp->sctp_frag_point = inp->sctp_frag_point;
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n_inp->partial_delivery_point = inp->partial_delivery_point;
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n_inp->sctp_context = inp->sctp_context;
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n_inp->inp_starting_point_for_iterator = NULL;
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/*
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* Now we must move it from one hash table to another and get the
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* stcb in the right place.
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*/
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sctp_move_pcb_and_assoc(inp, n_inp, stcb);
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atomic_add_int(&stcb->asoc.refcnt, 1);
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SCTP_TCB_UNLOCK(stcb);
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sctp_pull_off_control_to_new_inp(inp, n_inp, stcb, M_WAITOK);
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atomic_subtract_int(&stcb->asoc.refcnt, 1);
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return (0);
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}
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struct socket *
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sctp_get_peeloff(struct socket *head, sctp_assoc_t assoc_id, int *error)
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{
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struct socket *newso;
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struct sctp_inpcb *inp, *n_inp;
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struct sctp_tcb *stcb;
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SCTPDBG(SCTP_DEBUG_PEEL1, "SCTP peel-off called\n");
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL) {
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*error = EFAULT;
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return (NULL);
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}
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL) {
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*error = ENOTCONN;
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return (NULL);
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}
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newso = sonewconn(head, SS_ISCONNECTED
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);
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if (newso == NULL) {
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SCTPDBG(SCTP_DEBUG_PEEL1, "sctp_peeloff:sonewconn failed\n");
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*error = ENOMEM;
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SCTP_TCB_UNLOCK(stcb);
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return (NULL);
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}
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n_inp = (struct sctp_inpcb *)newso->so_pcb;
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SOCK_LOCK(head);
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SCTP_INP_WLOCK(inp);
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SCTP_INP_WLOCK(n_inp);
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n_inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
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SCTP_PCB_FLAGS_CONNECTED |
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SCTP_PCB_FLAGS_IN_TCPPOOL | /* Turn on Blocking IO */
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(SCTP_PCB_COPY_FLAGS & inp->sctp_flags));
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n_inp->sctp_features = inp->sctp_features;
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n_inp->sctp_frag_point = inp->sctp_frag_point;
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n_inp->partial_delivery_point = inp->partial_delivery_point;
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n_inp->sctp_context = inp->sctp_context;
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n_inp->inp_starting_point_for_iterator = NULL;
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/* copy in the authentication parameters from the original endpoint */
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if (n_inp->sctp_ep.local_hmacs)
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sctp_free_hmaclist(n_inp->sctp_ep.local_hmacs);
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n_inp->sctp_ep.local_hmacs =
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sctp_copy_hmaclist(inp->sctp_ep.local_hmacs);
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if (n_inp->sctp_ep.local_auth_chunks)
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sctp_free_chunklist(n_inp->sctp_ep.local_auth_chunks);
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n_inp->sctp_ep.local_auth_chunks =
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sctp_copy_chunklist(inp->sctp_ep.local_auth_chunks);
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(void)sctp_copy_skeylist(&inp->sctp_ep.shared_keys,
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&n_inp->sctp_ep.shared_keys);
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n_inp->sctp_socket = newso;
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if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) {
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sctp_feature_off(n_inp, SCTP_PCB_FLAGS_AUTOCLOSE);
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n_inp->sctp_ep.auto_close_time = 0;
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sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, n_inp, stcb, NULL,
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SCTP_FROM_SCTP_PEELOFF + SCTP_LOC_1);
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}
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/* Turn off any non-blocking semantic. */
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SCTP_CLEAR_SO_NBIO(newso);
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newso->so_state |= SS_ISCONNECTED;
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/* We remove it right away */
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#ifdef SCTP_LOCK_LOGGING
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if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
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sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
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}
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#endif
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TAILQ_REMOVE(&head->so_comp, newso, so_list);
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head->so_qlen--;
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SOCK_UNLOCK(head);
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/*
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* Now we must move it from one hash table to another and get the
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* stcb in the right place.
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*/
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SCTP_INP_WUNLOCK(n_inp);
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SCTP_INP_WUNLOCK(inp);
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sctp_move_pcb_and_assoc(inp, n_inp, stcb);
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atomic_add_int(&stcb->asoc.refcnt, 1);
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SCTP_TCB_UNLOCK(stcb);
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/*
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* And now the final hack. We move data in the pending side i.e.
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* head to the new socket buffer. Let the GRUBBING begin :-0
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*/
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sctp_pull_off_control_to_new_inp(inp, n_inp, stcb, M_WAITOK);
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atomic_subtract_int(&stcb->asoc.refcnt, 1);
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return (newso);
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}
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