| sctputil.c (270353) | sctputil.c (270354) |
|---|---|
| 1/*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * --- 17 unchanged lines hidden (view full) --- 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * --- 17 unchanged lines hidden (view full) --- 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> |
| 34__FBSDID("$FreeBSD: stable/10/sys/netinet/sctputil.c 270353 2014-08-22 19:46:22Z tuexen $"); | 34__FBSDID("$FreeBSD: stable/10/sys/netinet/sctputil.c 270354 2014-08-22 19:49:43Z tuexen $"); |
| 35 36#include <netinet/sctp_os.h> 37#include <netinet/sctp_pcb.h> 38#include <netinet/sctputil.h> 39#include <netinet/sctp_var.h> 40#include <netinet/sctp_sysctl.h> 41#ifdef INET6 42#include <netinet6/sctp6_var.h> --- 2468 unchanged lines hidden (view full) --- 2511 int pull_limit) 2512{ 2513 /* This just provides a typed signature to Peter's Pull routine */ 2514 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 2515 (uint8_t *) pull)); 2516} 2517 2518 | 35 36#include <netinet/sctp_os.h> 37#include <netinet/sctp_pcb.h> 38#include <netinet/sctputil.h> 39#include <netinet/sctp_var.h> 40#include <netinet/sctp_sysctl.h> 41#ifdef INET6 42#include <netinet6/sctp6_var.h> --- 2468 unchanged lines hidden (view full) --- 2511 int pull_limit) 2512{ 2513 /* This just provides a typed signature to Peter's Pull routine */ 2514 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 2515 (uint8_t *) pull)); 2516} 2517 2518 |
| 2519int | 2519struct mbuf * |
| 2520sctp_add_pad_tombuf(struct mbuf *m, int padlen) 2521{ | 2520sctp_add_pad_tombuf(struct mbuf *m, int padlen) 2521{ |
| 2522 /* 2523 * add padlen bytes of 0 filled padding to the end of the mbuf. If 2524 * padlen is > 3 this routine will fail. 2525 */ 2526 uint8_t *dp; 2527 int i; | 2522 struct mbuf *m_last; 2523 caddr_t dp; |
| 2528 2529 if (padlen > 3) { | 2524 2525 if (padlen > 3) { |
| 2530 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 2531 return (ENOBUFS); | 2526 return (NULL); |
| 2532 } 2533 if (padlen <= M_TRAILINGSPACE(m)) { 2534 /* 2535 * The easy way. We hope the majority of the time we hit 2536 * here :) 2537 */ | 2527 } 2528 if (padlen <= M_TRAILINGSPACE(m)) { 2529 /* 2530 * The easy way. We hope the majority of the time we hit 2531 * here :) 2532 */ |
| 2538 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m)); 2539 SCTP_BUF_LEN(m) += padlen; | 2533 m_last = m; |
| 2540 } else { | 2534 } else { |
| 2541 /* Hard way we must grow the mbuf */ 2542 struct mbuf *tmp; 2543 2544 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 2545 if (tmp == NULL) { 2546 /* Out of space GAK! we are in big trouble. */ 2547 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 2548 return (ENOBUFS); | 2535 /* Hard way we must grow the mbuf chain */ 2536 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 2537 if (m_last == NULL) { 2538 return (NULL); |
| 2549 } | 2539 } |
| 2550 /* setup and insert in middle */ 2551 SCTP_BUF_LEN(tmp) = padlen; 2552 SCTP_BUF_NEXT(tmp) = NULL; 2553 SCTP_BUF_NEXT(m) = tmp; 2554 dp = mtod(tmp, uint8_t *); | 2540 SCTP_BUF_LEN(m_last) = 0; 2541 SCTP_BUF_NEXT(m_last) = NULL; 2542 SCTP_BUF_NEXT(m) = m_last; |
| 2555 } | 2543 } |
| 2556 /* zero out the pad */ 2557 for (i = 0; i < padlen; i++) { 2558 *dp = 0; 2559 dp++; 2560 } 2561 return (0); | 2544 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last); 2545 SCTP_BUF_LEN(m_last) += padlen; 2546 memset(dp, 0, padlen); 2547 return (m_last); |
| 2562} 2563 | 2548} 2549 |
| 2564int | 2550struct mbuf * |
| 2565sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 2566{ 2567 /* find the last mbuf in chain and pad it */ 2568 struct mbuf *m_at; 2569 | 2551sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 2552{ 2553 /* find the last mbuf in chain and pad it */ 2554 struct mbuf *m_at; 2555 |
| 2570 if (last_mbuf) { | 2556 if (last_mbuf != NULL) { |
| 2571 return (sctp_add_pad_tombuf(last_mbuf, padval)); 2572 } else { 2573 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 2574 if (SCTP_BUF_NEXT(m_at) == NULL) { 2575 return (sctp_add_pad_tombuf(m_at, padval)); 2576 } 2577 } 2578 } | 2557 return (sctp_add_pad_tombuf(last_mbuf, padval)); 2558 } else { 2559 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 2560 if (SCTP_BUF_NEXT(m_at) == NULL) { 2561 return (sctp_add_pad_tombuf(m_at, padval)); 2562 } 2563 } 2564 } |
| 2579 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 2580 return (EFAULT); | 2565 return (NULL); |
| 2581} 2582 2583static void 2584sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 2585 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked 2586#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2587 SCTP_UNUSED 2588#endif --- 4401 unchanged lines hidden --- | 2566} 2567 2568static void 2569sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 2570 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked 2571#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2572 SCTP_UNUSED 2573#endif --- 4401 unchanged lines hidden --- |