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slirp: Prepare for persistent socket state flags

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This prepares for adding flags to socket.so_state that must not be
removed during the lifetime of a socket.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2009-06-24 14:42:29 +02:00 committed by Anthony Liguori
parent 3c6a05803c
commit f932b6ce71
5 changed files with 26 additions and 13 deletions
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9
slirp/slirp.c
View File

@ -495,7 +495,8 @@ void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds)
continue;
/* else failed */
so->so_state = SS_NOFDREF;
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF;
}
/* else so->so_state &= ~SS_ISFCONNECTING; */
@ -529,7 +530,8 @@ void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds)
continue; /* Still connecting, continue */
/* else failed */
so->so_state = SS_NOFDREF;
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF;
/* tcp_input will take care of it */
} else {
@ -540,7 +542,8 @@ void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds)
errno == EINPROGRESS || errno == ENOTCONN)
continue;
/* else failed */
so->so_state = SS_NOFDREF;
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF;
} else
so->so_state &= ~SS_ISFCONNECTING;

22
slirp/socket.c
View File

@ -581,7 +581,8 @@ sosendto(struct socket *so, struct mbuf *m)
*/
if (so->so_expire)
so->so_expire = curtime + SO_EXPIRE;
so->so_state = SS_ISFCONNECTED; /* So that it gets select()ed */
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
return 0;
}
@ -620,7 +621,8 @@ tcp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr, u_int lport, int flags
if (flags & SS_FACCEPTONCE)
so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
so->so_state = (SS_FACCEPTCONN|flags);
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= (SS_FACCEPTCONN | flags);
so->so_lport = lport; /* Kept in network format */
so->so_laddr.s_addr = laddr; /* Ditto */
@ -715,10 +717,12 @@ sofcantrcvmore(struct socket *so)
}
}
so->so_state &= ~(SS_ISFCONNECTING);
if (so->so_state & SS_FCANTSENDMORE)
so->so_state = SS_NOFDREF; /* Don't select it */ /* XXX close() here as well? */
else
if (so->so_state & SS_FCANTSENDMORE) {
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF; /* Don't select it */
} else {
so->so_state |= SS_FCANTRCVMORE;
}
}
static void
@ -734,10 +738,12 @@ sofcantsendmore(struct socket *so)
}
}
so->so_state &= ~(SS_ISFCONNECTING);
if (so->so_state & SS_FCANTRCVMORE)
so->so_state = SS_NOFDREF; /* as above */
else
if (so->so_state & SS_FCANTRCVMORE) {
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF; /* as above */
} else {
so->so_state |= SS_FCANTSENDMORE;
}
}
void

2
slirp/socket.h
View File

@ -71,6 +71,8 @@ struct socket {
#define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
#define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
extern struct socket tcb;
struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));

3
slirp/tcp_input.c
View File

@ -1038,7 +1038,8 @@ trimthenstep6:
soisfconnected(so);
so->so_state &= ~SS_CTL; /* success XXX */
} else if (ret == 2) {
so->so_state = SS_NOFDREF; /* CTL_CMD */
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_NOFDREF; /* CTL_CMD */
} else {
needoutput = 1;
tp->t_state = TCPS_FIN_WAIT_1;

3
slirp/udp.c
View File

@ -666,7 +666,8 @@ udp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr, u_int lport,
if (flags != SS_FACCEPTONCE)
so->so_expire = 0;
so->so_state = SS_ISFCONNECTED;
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= SS_ISFCONNECTED;
return so;
}