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authorMarc-André Lureau <marcandre.lureau@redhat.com>2019-01-17 15:43:43 +0400
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2019-02-07 15:49:08 +0200
commitc21d959440c5be6b456ca8780c2450ffd39fab99 (patch)
treeb8f7598af3923251ebfee8c872f9db9ed1eda772 /slirp
parentf6e5aa366fed71e2bf41438334bcbaf18c0f9ac5 (diff)
slirp: replace qemu_notify_event() with a callback
Introduce a SlirpCb callback to kick the main io-thread. Add an intermediary sodrop() function that will call SlirpCb.notify callback when sbdrop() returns true. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Diffstat (limited to 'slirp')
-rw-r--r--slirp/libslirp.h2
-rw-r--r--slirp/sbuf.c6
-rw-r--r--slirp/sbuf.h2
-rw-r--r--slirp/socket.c7
-rw-r--r--slirp/socket.h1
-rw-r--r--slirp/tcp_input.c6
6 files changed, 18 insertions, 6 deletions
diff --git a/slirp/libslirp.h b/slirp/libslirp.h
index 8ce69f0be3..679a25422b 100644
--- a/slirp/libslirp.h
+++ b/slirp/libslirp.h
@@ -31,6 +31,8 @@ typedef struct SlirpCb {
void (*register_poll_fd)(int fd);
/* Unregister a fd */
void (*unregister_poll_fd)(int fd);
+ /* Kick the io-thread, to signal that new events may be processed */
+ void (*notify)(void);
} SlirpCb;
diff --git a/slirp/sbuf.c b/slirp/sbuf.c
index 912f235f65..17f28e97a6 100644
--- a/slirp/sbuf.c
+++ b/slirp/sbuf.c
@@ -17,7 +17,7 @@ sbfree(struct sbuf *sb)
free(sb->sb_data);
}
-void
+bool
sbdrop(struct sbuf *sb, int num)
{
int limit = sb->sb_datalen / 2;
@@ -34,8 +34,10 @@ sbdrop(struct sbuf *sb, int num)
sb->sb_rptr -= sb->sb_datalen;
if (sb->sb_cc < limit && sb->sb_cc + num >= limit) {
- qemu_notify_event();
+ return true;
}
+
+ return false;
}
void
diff --git a/slirp/sbuf.h b/slirp/sbuf.h
index 644c201341..1cb9a42834 100644
--- a/slirp/sbuf.h
+++ b/slirp/sbuf.h
@@ -21,7 +21,7 @@ struct sbuf {
};
void sbfree(struct sbuf *);
-void sbdrop(struct sbuf *, int);
+bool sbdrop(struct sbuf *, int);
void sbreserve(struct sbuf *, int);
void sbappend(struct socket *, struct mbuf *);
void sbcopy(struct sbuf *, int, int, char *);
diff --git a/slirp/socket.c b/slirp/socket.c
index 5805d30f3d..2e8dc22fb6 100644
--- a/slirp/socket.c
+++ b/slirp/socket.c
@@ -928,3 +928,10 @@ void sotranslate_accept(struct socket *so)
break;
}
}
+
+void sodrop(struct socket *s, int num)
+{
+ if (sbdrop(&s->so_snd, num)) {
+ s->slirp->cb->notify();
+ }
+}
diff --git a/slirp/socket.h b/slirp/socket.h
index fc35ca5f72..1c1c8b5871 100644
--- a/slirp/socket.h
+++ b/slirp/socket.h
@@ -156,6 +156,7 @@ int soreadbuf(struct socket *so, const char *buf, int size);
void sotranslate_out(struct socket *, struct sockaddr_storage *);
void sotranslate_in(struct socket *, struct sockaddr_storage *);
void sotranslate_accept(struct socket *);
+void sodrop(struct socket *, int num);
#endif /* SLIRP_SOCKET_H */
diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c
index de5b74a52b..7c1fe18fec 100644
--- a/slirp/tcp_input.c
+++ b/slirp/tcp_input.c
@@ -506,7 +506,7 @@ findso:
SEQ_GT(ti->ti_ack, tp->t_rtseq))
tcp_xmit_timer(tp, tp->t_rtt);
acked = ti->ti_ack - tp->snd_una;
- sbdrop(&so->so_snd, acked);
+ sodrop(so, acked);
tp->snd_una = ti->ti_ack;
m_free(m);
@@ -1118,10 +1118,10 @@ trimthenstep6:
}
if (acked > so->so_snd.sb_cc) {
tp->snd_wnd -= so->so_snd.sb_cc;
- sbdrop(&so->so_snd, (int )so->so_snd.sb_cc);
+ sodrop(so, (int)so->so_snd.sb_cc);
ourfinisacked = 1;
} else {
- sbdrop(&so->so_snd, acked);
+ sodrop(so, acked);
tp->snd_wnd -= acked;
ourfinisacked = 0;
}