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sctp6_usrreq.c (179157) sctp6_usrreq.c (179783)
1/*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.

--- 16 unchanged lines hidden (view full) ---

25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30/* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */
31
32#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.

--- 16 unchanged lines hidden (view full) ---

25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30/* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 179157 2008-05-20 13:47:46Z rrs $");
33__FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 179783 2008-06-14 07:58:05Z rrs $");
34
35#include <netinet/sctp_os.h>
36#include <sys/proc.h>
37#include <netinet/sctp_pcb.h>
38#include <netinet/sctp_header.h>
39#include <netinet/sctp_var.h>
40#if defined(INET6)
41#include <netinet6/sctp6_var.h>

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46#include <netinet/sctp_asconf.h>
47#include <netinet/sctputil.h>
48#include <netinet/sctp_indata.h>
49#include <netinet/sctp_timer.h>
50#include <netinet/sctp_auth.h>
51#include <netinet/sctp_input.h>
52#include <netinet/sctp_output.h>
53#include <netinet/sctp_bsd_addr.h>
34
35#include <netinet/sctp_os.h>
36#include <sys/proc.h>
37#include <netinet/sctp_pcb.h>
38#include <netinet/sctp_header.h>
39#include <netinet/sctp_var.h>
40#if defined(INET6)
41#include <netinet6/sctp6_var.h>

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46#include <netinet/sctp_asconf.h>
47#include <netinet/sctputil.h>
48#include <netinet/sctp_indata.h>
49#include <netinet/sctp_timer.h>
50#include <netinet/sctp_auth.h>
51#include <netinet/sctp_input.h>
52#include <netinet/sctp_output.h>
53#include <netinet/sctp_bsd_addr.h>
54#include <netinet/udp.h>
54
55#ifdef IPSEC
56#include <netipsec/ipsec.h>
57#if defined(INET6)
58#include <netipsec/ipsec6.h>
59#endif /* INET6 */
60#endif /* IPSEC */
61

--- 12 unchanged lines hidden (view full) ---

74 uint32_t vrf_id = 0;
75 struct inpcb *in6p_ip;
76 struct sctp_chunkhdr *ch;
77 int length, mlen, offset, iphlen;
78 uint8_t ecn_bits;
79 struct sctp_tcb *stcb = NULL;
80 int pkt_len = 0;
81 int off = *offp;
55
56#ifdef IPSEC
57#include <netipsec/ipsec.h>
58#if defined(INET6)
59#include <netipsec/ipsec6.h>
60#endif /* INET6 */
61#endif /* IPSEC */
62

--- 12 unchanged lines hidden (view full) ---

75 uint32_t vrf_id = 0;
76 struct inpcb *in6p_ip;
77 struct sctp_chunkhdr *ch;
78 int length, mlen, offset, iphlen;
79 uint8_t ecn_bits;
80 struct sctp_tcb *stcb = NULL;
81 int pkt_len = 0;
82 int off = *offp;
83 uint16_t port = 0;
82
83 /* get the VRF and table id's */
84 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
85 SCTP_RELEASE_PKT(*i_pak);
86 return (-1);
87 }
88 m = SCTP_HEADER_TO_CHAIN(*i_pak);
89 pkt_len = SCTP_HEADER_LEN((*i_pak));

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120 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
121 /* No multi-cast support in SCTP */
122 goto bad;
123 }
124 /* destination port of 0 is illegal, based on RFC2960. */
125 if (sh->dest_port == 0)
126 goto bad;
127 check = sh->checksum; /* save incoming checksum */
84
85 /* get the VRF and table id's */
86 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
87 SCTP_RELEASE_PKT(*i_pak);
88 return (-1);
89 }
90 m = SCTP_HEADER_TO_CHAIN(*i_pak);
91 pkt_len = SCTP_HEADER_LEN((*i_pak));

--- 30 unchanged lines hidden (view full) ---

122 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
123 /* No multi-cast support in SCTP */
124 goto bad;
125 }
126 /* destination port of 0 is illegal, based on RFC2960. */
127 if (sh->dest_port == 0)
128 goto bad;
129 check = sh->checksum; /* save incoming checksum */
128 if ((check == 0) && (sctp_no_csum_on_loopback) &&
130 if ((check == 0) && (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback)) &&
129 (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst))) {
130 goto sctp_skip_csum;
131 }
132 sh->checksum = 0; /* prepare for calc */
133 calc_check = sctp_calculate_sum(m, &mlen, iphlen);
134 if (calc_check != check) {
135 SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n",
136 calc_check, check, m, mlen, iphlen);
137 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
138 sh, ch, &in6p, &net, vrf_id);
131 (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst))) {
132 goto sctp_skip_csum;
133 }
134 sh->checksum = 0; /* prepare for calc */
135 calc_check = sctp_calculate_sum(m, &mlen, iphlen);
136 if (calc_check != check) {
137 SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n",
138 calc_check, check, m, mlen, iphlen);
139 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
140 sh, ch, &in6p, &net, vrf_id);
141 if ((net) && (port)) {
142 if (net->port == 0) {
143 sctp_pathmtu_adjustment(in6p, stcb, net, net->mtu - sizeof(struct udphdr));
144 }
145 net->port = port;
146 }
139 /* in6p's ref-count increased && stcb locked */
140 if ((in6p) && (stcb)) {
141 sctp_send_packet_dropped(stcb, net, m, iphlen, 1);
142 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, SCTP_OUTPUT_FROM_INPUT_ERROR, SCTP_SO_NOT_LOCKED);
143 } else if ((in6p != NULL) && (stcb == NULL)) {
144 refcount_up = 1;
145 }
146 SCTP_STAT_INCR(sctps_badsum);

--- 5 unchanged lines hidden (view full) ---

152sctp_skip_csum:
153 net = NULL;
154 /*
155 * Locate pcb and tcb for datagram sctp_findassociation_addr() wants
156 * IP/SCTP/first chunk header...
157 */
158 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
159 sh, ch, &in6p, &net, vrf_id);
147 /* in6p's ref-count increased && stcb locked */
148 if ((in6p) && (stcb)) {
149 sctp_send_packet_dropped(stcb, net, m, iphlen, 1);
150 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, SCTP_OUTPUT_FROM_INPUT_ERROR, SCTP_SO_NOT_LOCKED);
151 } else if ((in6p != NULL) && (stcb == NULL)) {
152 refcount_up = 1;
153 }
154 SCTP_STAT_INCR(sctps_badsum);

--- 5 unchanged lines hidden (view full) ---

160sctp_skip_csum:
161 net = NULL;
162 /*
163 * Locate pcb and tcb for datagram sctp_findassociation_addr() wants
164 * IP/SCTP/first chunk header...
165 */
166 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
167 sh, ch, &in6p, &net, vrf_id);
168 if ((net) && (port)) {
169 if (net->port == 0) {
170 sctp_pathmtu_adjustment(in6p, stcb, net, net->mtu - sizeof(struct udphdr));
171 }
172 net->port = port;
173 }
160 /* in6p's ref-count increased */
161 if (in6p == NULL) {
162 struct sctp_init_chunk *init_chk, chunk_buf;
163
164 SCTP_STAT_INCR(sctps_noport);
165 if (ch->chunk_type == SCTP_INITIATION) {
166 /*
167 * we do a trick here to get the INIT tag, dig in

--- 4 unchanged lines hidden (view full) ---

172 iphlen + sizeof(*sh), sizeof(*init_chk),
173 (uint8_t *) & chunk_buf);
174 if (init_chk)
175 sh->v_tag = init_chk->init.initiate_tag;
176 else
177 sh->v_tag = 0;
178 }
179 if (ch->chunk_type == SCTP_SHUTDOWN_ACK) {
174 /* in6p's ref-count increased */
175 if (in6p == NULL) {
176 struct sctp_init_chunk *init_chk, chunk_buf;
177
178 SCTP_STAT_INCR(sctps_noport);
179 if (ch->chunk_type == SCTP_INITIATION) {
180 /*
181 * we do a trick here to get the INIT tag, dig in

--- 4 unchanged lines hidden (view full) ---

186 iphlen + sizeof(*sh), sizeof(*init_chk),
187 (uint8_t *) & chunk_buf);
188 if (init_chk)
189 sh->v_tag = init_chk->init.initiate_tag;
190 else
191 sh->v_tag = 0;
192 }
193 if (ch->chunk_type == SCTP_SHUTDOWN_ACK) {
180 sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id, 0);
194 sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id, port);
181 goto bad;
182 }
183 if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) {
184 goto bad;
185 }
186 if (ch->chunk_type != SCTP_ABORT_ASSOCIATION)
195 goto bad;
196 }
197 if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) {
198 goto bad;
199 }
200 if (ch->chunk_type != SCTP_ABORT_ASSOCIATION)
187 sctp_send_abort(m, iphlen, sh, 0, NULL, vrf_id, 0);
201 sctp_send_abort(m, iphlen, sh, 0, NULL, vrf_id, port);
188 goto bad;
189 } else if (stcb == NULL) {
190 refcount_up = 1;
191 }
192 in6p_ip = (struct inpcb *)in6p;
193#ifdef IPSEC
194 /*
195 * Check AH/ESP integrity.

--- 11 unchanged lines hidden (view full) ---

207 offset -= sizeof(*ch);
208 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
209
210 /* Length now holds the total packet length payload + iphlen */
211 length = ntohs(ip6->ip6_plen) + iphlen;
212
213 /* sa_ignore NO_NULL_CHK */
214 sctp_common_input_processing(&m, iphlen, offset, length, sh, ch,
202 goto bad;
203 } else if (stcb == NULL) {
204 refcount_up = 1;
205 }
206 in6p_ip = (struct inpcb *)in6p;
207#ifdef IPSEC
208 /*
209 * Check AH/ESP integrity.

--- 11 unchanged lines hidden (view full) ---

221 offset -= sizeof(*ch);
222 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
223
224 /* Length now holds the total packet length payload + iphlen */
225 length = ntohs(ip6->ip6_plen) + iphlen;
226
227 /* sa_ignore NO_NULL_CHK */
228 sctp_common_input_processing(&m, iphlen, offset, length, sh, ch,
215 in6p, stcb, net, ecn_bits, vrf_id, 0);
229 in6p, stcb, net, ecn_bits, vrf_id, port);
216 /* inp's ref-count reduced && stcb unlocked */
217 /* XXX this stuff below gets moved to appropriate parts later... */
218 if (m)
219 sctp_m_freem(m);
220 if ((in6p) && refcount_up) {
221 /* reduce ref-count */
222 SCTP_INP_WLOCK(in6p);
223 SCTP_INP_DECR_REF(in6p);

--- 155 unchanged lines hidden (view full) ---

379 * destination is set to the unreachable state, also
380 * set the destination to the PF state.
381 */
382 /*
383 * Add debug message here if destination is not in
384 * PF state.
385 */
386 /* Stop any running T3 timers here? */
230 /* inp's ref-count reduced && stcb unlocked */
231 /* XXX this stuff below gets moved to appropriate parts later... */
232 if (m)
233 sctp_m_freem(m);
234 if ((in6p) && refcount_up) {
235 /* reduce ref-count */
236 SCTP_INP_WLOCK(in6p);
237 SCTP_INP_DECR_REF(in6p);

--- 155 unchanged lines hidden (view full) ---

393 * destination is set to the unreachable state, also
394 * set the destination to the PF state.
395 */
396 /*
397 * Add debug message here if destination is not in
398 * PF state.
399 */
400 /* Stop any running T3 timers here? */
387 if (sctp_cmt_on_off && sctp_cmt_pf) {
401 if (SCTP_BASE_SYSCTL(sctp_cmt_on_off) && SCTP_BASE_SYSCTL(sctp_cmt_pf)) {
388 net->dest_state &= ~SCTP_ADDR_PF;
389 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
390 net);
391 }
392 net->error_count = net->failure_threshold + 1;
393 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
394 stcb, SCTP_FAILED_THRESHOLD,
395 (void *)net, SCTP_SO_NOT_LOCKED);

--- 243 unchanged lines hidden (view full) ---

639 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
640
641 inp = (struct sctp_inpcb *)so->so_pcb;
642 if (inp != NULL) {
643 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
644 return EINVAL;
645 }
646 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
402 net->dest_state &= ~SCTP_ADDR_PF;
403 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
404 net);
405 }
406 net->error_count = net->failure_threshold + 1;
407 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
408 stcb, SCTP_FAILED_THRESHOLD,
409 (void *)net, SCTP_SO_NOT_LOCKED);

--- 243 unchanged lines hidden (view full) ---

653 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
654
655 inp = (struct sctp_inpcb *)so->so_pcb;
656 if (inp != NULL) {
657 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
658 return EINVAL;
659 }
660 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
647 error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace);
661 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
648 if (error)
649 return error;
650 }
651 error = sctp_inpcb_alloc(so, vrf_id);
652 if (error)
653 return error;
654 inp = (struct sctp_inpcb *)so->so_pcb;
655 SCTP_INP_WLOCK(inp);

--- 617 unchanged lines hidden --- 		662 if (error)
663 return error;
664 }
665 error = sctp_inpcb_alloc(so, vrf_id);
666 if (error)
667 return error;
668 inp = (struct sctp_inpcb *)so->so_pcb;
669 SCTP_INP_WLOCK(inp);

--- 617 unchanged lines hidden ---