From a5e6cafffc977a4ce8e7123fb0332e14bca081fb Mon Sep 17 00:00:00 2001 From: Michael S. Tsirkin Date: Mon, 15 Feb 2010 11:56:03 -0200 Subject: [PATCH 1/5] net: add API to disable/enable polling RH-Author: Michael S. Tsirkin Message-id: <20100215115603.GB10581@redhat.com> Patchwork-id: 7105 O-Subject: [PATCHv2 RHEL6.0 01/22] net: add API to disable/enable polling Bugzilla: 562958 RH-Acked-by: Gerd Hoffmann RH-Acked-by: Juan Quintela RH-Acked-by: Amit Shah When vhost is bound to a backend device, we need to stop polling it when vhost is started, and restart polling when vhost is stopped. Add an API for that for use by vhost, and implement in tap backend. Signed-off-by: Michael S. Tsirkin Signed-off-by: Anthony Liguori (cherry picked from commit ceb696159d569db5b2a7659ce38752398c236742) --- net.h | 3 +++ net/tap.c | 8 ++++++++ 2 files changed, 11 insertions(+), 0 deletions(-) Signed-off-by: Glauber Costa --- net.h | 3 +++ net/tap.c | 8 ++++++++ 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/net.h b/net.h index 4971fcb..116bb80 100644 --- a/net.h +++ b/net.h @@ -1,6 +1,7 @@ #ifndef QEMU_NET_H #define QEMU_NET_H +#include #include "qemu-queue.h" #include "qemu-common.h" #include "qdict.h" @@ -36,6 +37,7 @@ typedef enum { NET_CLIENT_TYPE_DUMP } net_client_type; +typedef void (NetPoll)(VLANClientState *, bool enable); typedef int (NetCanReceive)(VLANClientState *); typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t); typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int); @@ -51,6 +53,7 @@ typedef struct NetClientInfo { NetCanReceive *can_receive; NetCleanup *cleanup; LinkStatusChanged *link_status_changed; + NetPoll *poll; } NetClientInfo; struct VLANClientState { diff --git a/net/tap.c b/net/tap.c index 0d8b424..d3492de 100644 --- a/net/tap.c +++ b/net/tap.c @@ -262,6 +262,13 @@ static void tap_cleanup(VLANClientState *nc) close(s->fd); } +static void tap_poll(VLANClientState *nc, bool enable) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + tap_read_poll(s, enable); + tap_write_poll(s, enable); +} + /* fd support */ static NetClientInfo net_tap_info = { @@ -270,6 +277,7 @@ static NetClientInfo net_tap_info = { .receive = tap_receive, .receive_raw = tap_receive_raw, .receive_iov = tap_receive_iov, + .poll = tap_poll, .cleanup = tap_cleanup, }; -- 1.6.6