| version 1.66.2.3, 2002/08/29 05:23:14 |
version 1.67, 2002/06/10 20:43:16 |
|
|
| #endif /* SOSEND_COUNTERS */ |
#endif /* SOSEND_COUNTERS */ |
| } |
} |
| |
|
| #ifdef SOSEND_NO_LOAN |
#ifdef SOSEND_LOAN |
| int use_sosend_loan = 0; |
|
| #else |
|
| int use_sosend_loan = 1; |
int use_sosend_loan = 1; |
| |
#else |
| |
int use_sosend_loan = 0; |
| #endif |
#endif |
| |
|
| struct mbuf *so_pendfree; |
struct mbuf *so_pendfree; |
| Line 894 soreceive(struct socket *so, struct mbuf |
|
| Line 894 soreceive(struct socket *so, struct mbuf |
|
| error = EWOULDBLOCK; |
error = EWOULDBLOCK; |
| goto release; |
goto release; |
| } |
} |
| SBLASTRECORDCHK(&so->so_rcv, "soreceive sbwait 1"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive sbwait 1"); |
|
| sbunlock(&so->so_rcv); |
sbunlock(&so->so_rcv); |
| error = sbwait(&so->so_rcv); |
error = sbwait(&so->so_rcv); |
| splx(s); |
splx(s); |
| Line 904 soreceive(struct socket *so, struct mbuf |
|
| Line 902 soreceive(struct socket *so, struct mbuf |
|
| goto restart; |
goto restart; |
| } |
} |
| dontblock: |
dontblock: |
| /* |
|
| * On entry here, m points to the first record of the socket buffer. |
|
| * While we process the initial mbufs containing address and control |
|
| * info, we save a copy of m->m_nextpkt into nextrecord. |
|
| */ |
|
| #ifdef notyet /* XXXX */ |
#ifdef notyet /* XXXX */ |
| if (uio->uio_procp) |
if (uio->uio_procp) |
| uio->uio_procp->p_stats->p_ru.ru_msgrcv++; |
uio->uio_procp->p_stats->p_ru.ru_msgrcv++; |
| #endif |
#endif |
| KASSERT(m == so->so_rcv.sb_mb); |
|
| SBLASTRECORDCHK(&so->so_rcv, "soreceive 1"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive 1"); |
|
| nextrecord = m->m_nextpkt; |
nextrecord = m->m_nextpkt; |
| if (pr->pr_flags & PR_ADDR) { |
if (pr->pr_flags & PR_ADDR) { |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| Line 968 soreceive(struct socket *so, struct mbuf |
|
| Line 958 soreceive(struct socket *so, struct mbuf |
|
| controlp = &(*controlp)->m_next; |
controlp = &(*controlp)->m_next; |
| } |
} |
| } |
} |
| |
|
| /* |
|
| * If m is non-NULL, we have some data to read. From now on, |
|
| * make sure to keep sb_lastrecord consistent when working on |
|
| * the last packet on the chain (nextrecord == NULL) and we |
|
| * change m->m_nextpkt. |
|
| */ |
|
| if (m) { |
if (m) { |
| if ((flags & MSG_PEEK) == 0) { |
if ((flags & MSG_PEEK) == 0) |
| m->m_nextpkt = nextrecord; |
m->m_nextpkt = nextrecord; |
| /* |
|
| * If nextrecord == NULL (this is a single chain), |
|
| * then sb_lastrecord may not be valid here if m |
|
| * was changed earlier. |
|
| */ |
|
| if (nextrecord == NULL) { |
|
| KASSERT(so->so_rcv.sb_mb == m); |
|
| so->so_rcv.sb_lastrecord = m; |
|
| } |
|
| } |
|
| type = m->m_type; |
type = m->m_type; |
| if (type == MT_OOBDATA) |
if (type == MT_OOBDATA) |
| flags |= MSG_OOB; |
flags |= MSG_OOB; |
| } else { |
|
| if ((flags & MSG_PEEK) == 0) { |
|
| KASSERT(so->so_rcv.sb_mb == m); |
|
| so->so_rcv.sb_mb = nextrecord; |
|
| SB_EMPTY_FIXUP(&so->so_rcv); |
|
| } |
|
| } |
} |
| SBLASTRECORDCHK(&so->so_rcv, "soreceive 2"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive 2"); |
|
| |
|
| moff = 0; |
moff = 0; |
| offset = 0; |
offset = 0; |
| while (m && uio->uio_resid > 0 && error == 0) { |
while (m && uio->uio_resid > 0 && error == 0) { |
| Line 1028 soreceive(struct socket *so, struct mbuf |
|
| Line 992 soreceive(struct socket *so, struct mbuf |
|
| * block interrupts again. |
* block interrupts again. |
| */ |
*/ |
| if (mp == 0) { |
if (mp == 0) { |
| SBLASTRECORDCHK(&so->so_rcv, "soreceive uiomove"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive uiomove"); |
|
| splx(s); |
splx(s); |
| error = uiomove(mtod(m, caddr_t) + moff, (int)len, uio); |
error = uiomove(mtod(m, caddr_t) + moff, (int)len, uio); |
| s = splsoftnet(); |
s = splsoftnet(); |
| Line 1071 soreceive(struct socket *so, struct mbuf |
|
| Line 1033 soreceive(struct socket *so, struct mbuf |
|
| MFREE(m, so->so_rcv.sb_mb); |
MFREE(m, so->so_rcv.sb_mb); |
| m = so->so_rcv.sb_mb; |
m = so->so_rcv.sb_mb; |
| } |
} |
| /* |
if (m) |
| * If m != NULL, we also know that |
|
| * so->so_rcv.sb_mb != NULL. |
|
| */ |
|
| KASSERT(so->so_rcv.sb_mb == m); |
|
| if (m) { |
|
| m->m_nextpkt = nextrecord; |
m->m_nextpkt = nextrecord; |
| if (nextrecord == NULL) |
|
| so->so_rcv.sb_lastrecord = m; |
|
| } else { |
|
| so->so_rcv.sb_mb = nextrecord; |
|
| SB_EMPTY_FIXUP(&so->so_rcv); |
|
| } |
|
| SBLASTRECORDCHK(&so->so_rcv, "soreceive 3"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive 3"); |
|
| } |
} |
| } else { |
} else { |
| if (flags & MSG_PEEK) |
if (flags & MSG_PEEK) |
| Line 1124 soreceive(struct socket *so, struct mbuf |
|
| Line 1073 soreceive(struct socket *so, struct mbuf |
|
| !sosendallatonce(so) && !nextrecord) { |
!sosendallatonce(so) && !nextrecord) { |
| if (so->so_error || so->so_state & SS_CANTRCVMORE) |
if (so->so_error || so->so_state & SS_CANTRCVMORE) |
| break; |
break; |
| /* |
|
| * If we are peeking and the socket receive buffer is |
|
| * full, stop since we can't get more data to peek at. |
|
| */ |
|
| if ((flags & MSG_PEEK) && sbspace(&so->so_rcv) <= 0) |
|
| break; |
|
| /* |
|
| * If we've drained the socket buffer, tell the |
|
| * protocol in case it needs to do something to |
|
| * get it filled again. |
|
| */ |
|
| if ((pr->pr_flags & PR_WANTRCVD) && so->so_pcb) |
|
| (*pr->pr_usrreq)(so, PRU_RCVD, |
|
| (struct mbuf *)0, |
|
| (struct mbuf *)(long)flags, |
|
| (struct mbuf *)0, |
|
| (struct proc *)0); |
|
| SBLASTRECORDCHK(&so->so_rcv, "soreceive sbwait 2"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive sbwait 2"); |
|
| error = sbwait(&so->so_rcv); |
error = sbwait(&so->so_rcv); |
| if (error) { |
if (error) { |
| sbunlock(&so->so_rcv); |
sbunlock(&so->so_rcv); |
| Line 1160 soreceive(struct socket *so, struct mbuf |
|
| Line 1090 soreceive(struct socket *so, struct mbuf |
|
| (void) sbdroprecord(&so->so_rcv); |
(void) sbdroprecord(&so->so_rcv); |
| } |
} |
| if ((flags & MSG_PEEK) == 0) { |
if ((flags & MSG_PEEK) == 0) { |
| if (m == 0) { |
if (m == 0) |
| /* |
|
| * First part is an inline SB_EMPTY_FIXUP(). Second |
|
| * part makes sure sb_lastrecord is up-to-date if |
|
| * there is still data in the socket buffer. |
|
| */ |
|
| so->so_rcv.sb_mb = nextrecord; |
so->so_rcv.sb_mb = nextrecord; |
| if (so->so_rcv.sb_mb == NULL) { |
|
| so->so_rcv.sb_mbtail = NULL; |
|
| so->so_rcv.sb_lastrecord = NULL; |
|
| } else if (nextrecord->m_nextpkt == NULL) |
|
| so->so_rcv.sb_lastrecord = nextrecord; |
|
| } |
|
| SBLASTRECORDCHK(&so->so_rcv, "soreceive 4"); |
|
| SBLASTMBUFCHK(&so->so_rcv, "soreceive 4"); |
|
| if (pr->pr_flags & PR_WANTRCVD && so->so_pcb) |
if (pr->pr_flags & PR_WANTRCVD && so->so_pcb) |
| (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, |
(*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, |
| (struct mbuf *)(long)flags, (struct mbuf *)0, |
(struct mbuf *)(long)flags, (struct mbuf *)0, |