[PATCH v2 1/9] net: introduce tcp_server_start()

2012-03-05 Thread Amos Kong
Introduce tcp_server_start() by moving original code in
tcp_start_incoming_migration().

Signed-off-by: Amos Kong ak...@redhat.com
---
 net.c |   27 +++
 qemu_socket.h |2 ++
 2 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/net.c b/net.c
index c34474f..0260968 100644
--- a/net.c
+++ b/net.c
@@ -99,6 +99,33 @@ static int get_str_sep(char *buf, int buf_size, const char 
**pp, int sep)
 return 0;
 }
 
+int tcp_server_start(const char *str, int *fd)
+{
+int val, ret;
+struct sockaddr_in saddr;
+
+if (parse_host_port(saddr, str)  0) {
+return -1;
+}
+
+*fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
+if (fd  0) {
+perror(socket);
+return -1;
+}
+socket_set_nonblock(*fd);
+
+/* allow fast reuse */
+val = 1;
+setsockopt(*fd, SOL_SOCKET, SO_REUSEADDR, (const char *)val, sizeof(val));
+
+ret = bind(*fd, (struct sockaddr *)saddr, sizeof(saddr));
+if (ret  0) {
+closesocket(*fd);
+}
+return ret;
+}
+
 int parse_host_port(struct sockaddr_in *saddr, const char *str)
 {
 char buf[512];
diff --git a/qemu_socket.h b/qemu_socket.h
index fe4cf6c..d612793 100644
--- a/qemu_socket.h
+++ b/qemu_socket.h
@@ -54,6 +54,8 @@ int unix_listen(const char *path, char *ostr, int olen);
 int unix_connect_opts(QemuOpts *opts);
 int unix_connect(const char *path);
 
+int tcp_server_start(const char *str, int *fd);
+
 /* Old, ipv4 only bits.  Don't use for new code. */
 int parse_host_port(struct sockaddr_in *saddr, const char *str);
 int socket_init(void);

--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: [Qemu-devel] [PATCH v2 1/9] net: introduce tcp_server_start()

2012-03-05 Thread Orit Wasserman
On 03/05/2012 12:03 PM, Amos Kong wrote:
 Introduce tcp_server_start() by moving original code in
 tcp_start_incoming_migration().
 
 Signed-off-by: Amos Kong ak...@redhat.com
 ---
  net.c |   27 +++
  qemu_socket.h |2 ++
  2 files changed, 29 insertions(+), 0 deletions(-)
 
 diff --git a/net.c b/net.c
 index c34474f..0260968 100644
 --- a/net.c
 +++ b/net.c
 @@ -99,6 +99,33 @@ static int get_str_sep(char *buf, int buf_size, const char 
 **pp, int sep)
  return 0;
  }
  
 +int tcp_server_start(const char *str, int *fd)
 +{
 +int val, ret;
 +struct sockaddr_in saddr;
 +
 +if (parse_host_port(saddr, str)  0) {

error message would be nice 

 +return -1;
 +}
 +
 +*fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
 +if (fd  0) {
 +perror(socket);
 +return -1;
 +}

this is actually net_socket_listen_init version 
tcp_start_incoming_migration returns the error -socket_error().
I prefer not to lose the errno.

I know that when calling net_socket_listen_init for some unknown reason there 
is an explict check for -1
 if (net_socket_listen_init(vlan, socket, name, listen) == -1) {
I think it is a good opportunity to change this check.

Orit
 +socket_set_nonblock(*fd);
 +
 +/* allow fast reuse */
 +val = 1;
 +setsockopt(*fd, SOL_SOCKET, SO_REUSEADDR, (const char *)val, 
 sizeof(val));
 +
 +ret = bind(*fd, (struct sockaddr *)saddr, sizeof(saddr));
 +if (ret  0) {
 +closesocket(*fd);
 +}
 +return ret;
 +}
 +
  int parse_host_port(struct sockaddr_in *saddr, const char *str)
  {
  char buf[512];
 diff --git a/qemu_socket.h b/qemu_socket.h
 index fe4cf6c..d612793 100644
 --- a/qemu_socket.h
 +++ b/qemu_socket.h
 @@ -54,6 +54,8 @@ int unix_listen(const char *path, char *ostr, int olen);
  int unix_connect_opts(QemuOpts *opts);
  int unix_connect(const char *path);
  
 +int tcp_server_start(const char *str, int *fd);
 +
  /* Old, ipv4 only bits.  Don't use for new code. */
  int parse_host_port(struct sockaddr_in *saddr, const char *str);
  int socket_init(void);
 
 

--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: [Qemu-devel] [PATCH v2 1/9] net: introduce tcp_server_start()

2012-03-05 Thread Amos Kong

On 05/03/12 21:25, Orit Wasserman wrote:

On 03/05/2012 12:03 PM, Amos Kong wrote:

Introduce tcp_server_start() by moving original code in
tcp_start_incoming_migration().

Signed-off-by: Amos Kongak...@redhat.com
---
  net.c |   27 +++
  qemu_socket.h |2 ++
  2 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/net.c b/net.c
index c34474f..0260968 100644
--- a/net.c
+++ b/net.c
@@ -99,6 +99,33 @@ static int get_str_sep(char *buf, int buf_size, const char 
**pp, int sep)
  return 0;
  }

+int tcp_server_start(const char *str, int *fd)
+{
+int val, ret;
+struct sockaddr_in saddr;
+
+if (parse_host_port(saddr, str)  0) {


error message would be nice


+return -1;
+}
+
+*fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
+if (fd  0) {
+perror(socket);
+return -1;
+}


this is actually net_socket_listen_init version
tcp_start_incoming_migration returns the error -socket_error().
I prefer not to lose the errno.


agree.


I know that when calling net_socket_listen_init for some unknown reason there 
is an explict check for -1
 if (net_socket_listen_init(vlan, socket, name, listen) == -1) {
I think it is a good opportunity to change this check.


nod.



Orit

+socket_set_nonblock(*fd);
+
+/* allow fast reuse */
+val = 1;
+setsockopt(*fd, SOL_SOCKET, SO_REUSEADDR, (const char *)val, sizeof(val));
+
+ret = bind(*fd, (struct sockaddr *)saddr, sizeof(saddr));
+if (ret  0) {
+closesocket(*fd);
+}
+return ret;
+}
+
  int parse_host_port(struct sockaddr_in *saddr, const char *str)
  {
  char buf[512];
diff --git a/qemu_socket.h b/qemu_socket.h
index fe4cf6c..d612793 100644
--- a/qemu_socket.h
+++ b/qemu_socket.h
@@ -54,6 +54,8 @@ int unix_listen(const char *path, char *ostr, int olen);
  int unix_connect_opts(QemuOpts *opts);
  int unix_connect(const char *path);

+int tcp_server_start(const char *str, int *fd);
+
  /* Old, ipv4 only bits.  Don't use for new code. */
  int parse_host_port(struct sockaddr_in *saddr, const char *str);
  int socket_init(void);




--
Amos.
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html