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tcp_syncache.c (287481) tcp_syncache.c (292309)
1/*-
2 * Copyright (c) 2001 McAfee, Inc.
3 * Copyright (c) 2006,2013 Andre Oppermann, Internet Business Solutions AG
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Jonathan Lemon
7 * and McAfee Research, the Security Research Division of McAfee, Inc. under
8 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the

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26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2001 McAfee, Inc.
3 * Copyright (c) 2006,2013 Andre Oppermann, Internet Business Solutions AG
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Jonathan Lemon
7 * and McAfee Research, the Security Research Division of McAfee, Inc. under
8 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the

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26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/netinet/tcp_syncache.c 287481 2015-09-05 10:15:19Z glebius $");
34__FBSDID("$FreeBSD: head/sys/netinet/tcp_syncache.c 292309 2015-12-16 00:56:45Z rrs $");
35
36#include "opt_inet.h"
37#include "opt_inet6.h"
38#include "opt_ipsec.h"
39#include "opt_pcbgroup.h"
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/hash.h>
35
36#include "opt_inet.h"
37#include "opt_inet6.h"
38#include "opt_ipsec.h"
39#include "opt_pcbgroup.h"
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/hash.h>
44#include <sys/refcount.h>
44#include <sys/kernel.h>
45#include <sys/sysctl.h>
46#include <sys/limits.h>
47#include <sys/lock.h>
48#include <sys/mutex.h>
49#include <sys/malloc.h>
50#include <sys/mbuf.h>
51#include <sys/proc.h> /* for proc0 declaration */

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621/*
622 * Build a new TCP socket structure from a syncache entry.
623 *
624 * On success return the newly created socket with its underlying inp locked.
625 */
626static struct socket *
627syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
628{
45#include <sys/kernel.h>
46#include <sys/sysctl.h>
47#include <sys/limits.h>
48#include <sys/lock.h>
49#include <sys/mutex.h>
50#include <sys/malloc.h>
51#include <sys/mbuf.h>
52#include <sys/proc.h> /* for proc0 declaration */

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622/*
623 * Build a new TCP socket structure from a syncache entry.
624 *
625 * On success return the newly created socket with its underlying inp locked.
626 */
627static struct socket *
628syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
629{
630 struct tcp_function_block *blk;
629 struct inpcb *inp = NULL;
630 struct socket *so;
631 struct tcpcb *tp;
632 int error;
633 char *s;
634
635 INP_INFO_RLOCK_ASSERT(&V_tcbinfo);
636

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812#endif /* INET */
813 INP_HASH_WUNLOCK(&V_tcbinfo);
814 tp = intotcpcb(inp);
815 tcp_state_change(tp, TCPS_SYN_RECEIVED);
816 tp->iss = sc->sc_iss;
817 tp->irs = sc->sc_irs;
818 tcp_rcvseqinit(tp);
819 tcp_sendseqinit(tp);
631 struct inpcb *inp = NULL;
632 struct socket *so;
633 struct tcpcb *tp;
634 int error;
635 char *s;
636
637 INP_INFO_RLOCK_ASSERT(&V_tcbinfo);
638

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814#endif /* INET */
815 INP_HASH_WUNLOCK(&V_tcbinfo);
816 tp = intotcpcb(inp);
817 tcp_state_change(tp, TCPS_SYN_RECEIVED);
818 tp->iss = sc->sc_iss;
819 tp->irs = sc->sc_irs;
820 tcp_rcvseqinit(tp);
821 tcp_sendseqinit(tp);
822 blk = sototcpcb(lso)->t_fb;
823 if (blk != tp->t_fb) {
824 /*
825 * Our parents t_fb was not the default,
826 * we need to release our ref on tp->t_fb and
827 * pickup one on the new entry.
828 */
829 struct tcp_function_block *rblk;
830
831 rblk = find_and_ref_tcp_fb(blk);
832 KASSERT(rblk != NULL,
833 ("cannot find blk %p out of syncache?", blk));
834 if (tp->t_fb->tfb_tcp_fb_fini)
835 (*tp->t_fb->tfb_tcp_fb_fini)(tp);
836 refcount_release(&tp->t_fb->tfb_refcnt);
837 tp->t_fb = rblk;
838 if (tp->t_fb->tfb_tcp_fb_init) {
839 (*tp->t_fb->tfb_tcp_fb_init)(tp);
840 }
841 }
820 tp->snd_wl1 = sc->sc_irs;
821 tp->snd_max = tp->iss + 1;
822 tp->snd_nxt = tp->iss + 1;
823 tp->rcv_up = sc->sc_irs + 1;
824 tp->rcv_wnd = sc->sc_wnd;
825 tp->rcv_adv += tp->rcv_wnd;
826 tp->last_ack_sent = tp->rcv_nxt;
827

--- 1198 unchanged lines hidden --- 		842 tp->snd_wl1 = sc->sc_irs;
843 tp->snd_max = tp->iss + 1;
844 tp->snd_nxt = tp->iss + 1;
845 tp->rcv_up = sc->sc_irs + 1;
846 tp->rcv_wnd = sc->sc_wnd;
847 tp->rcv_adv += tp->rcv_wnd;
848 tp->last_ack_sent = tp->rcv_nxt;
849

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