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authorFlorin Coras <fcoras@cisco.com>2018-08-03 02:50:43 -0700
committerDave Barach <openvpp@barachs.net>2018-08-04 16:00:32 +0000
commit466f289c27f290a2764a82f57f5c20d080227ead (patch)
treef37fd2763c95e3139d57423d06ae993453dc382c /src/vlibmemory
parente7a9b3d2545c00689fe7547e7d807fe4a9b3365d (diff)
socket api: multiple fds in one msg
Change-Id: I77a6e092a42290eed7201ad4a62e0d00ef997d2b Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vlibmemory')
-rw-r--r--src/vlibmemory/api.h9
-rw-r--r--src/vlibmemory/socket_api.c14
-rw-r--r--src/vlibmemory/socket_api.h4
-rw-r--r--src/vlibmemory/socket_client.c13
-rw-r--r--src/vlibmemory/socket_client.h2
5 files changed, 22 insertions, 20 deletions
diff --git a/src/vlibmemory/api.h b/src/vlibmemory/api.h
index 8d2b191fb81..2146b16c5b0 100644
--- a/src/vlibmemory/api.h
+++ b/src/vlibmemory/api.h
@@ -82,20 +82,21 @@ vl_api_registration_del_file (vl_api_registration_t * reg)
}
always_inline clib_error_t *
-vl_api_send_fd_msg (vl_api_registration_t * reg, int fd_to_send)
+vl_api_send_fd_msg (vl_api_registration_t * reg, int fds[], int n_fds)
{
clib_file_t *cf = vl_api_registration_file (reg);
if (cf)
- return vl_sock_api_send_fd_msg (cf->file_descriptor, fd_to_send);
+ return vl_sock_api_send_fd_msg (cf->file_descriptor, fds, n_fds);
return 0;
}
always_inline clib_error_t *
-vl_api_recv_fd_msg (vl_api_registration_t * reg, int *fd_to_recv, u32 wait)
+vl_api_recv_fd_msg (vl_api_registration_t * reg, int fds[], int n_fds,
+ u32 wait)
{
clib_file_t *cf = vl_api_registration_file (reg);
if (cf)
- return vl_sock_api_recv_fd_msg (cf->file_descriptor, fd_to_recv, wait);
+ return vl_sock_api_recv_fd_msg (cf->file_descriptor, fds, n_fds, wait);
return 0;
}
diff --git a/src/vlibmemory/socket_api.c b/src/vlibmemory/socket_api.c
index 7d271276be2..5587611d65a 100644
--- a/src/vlibmemory/socket_api.c
+++ b/src/vlibmemory/socket_api.c
@@ -449,12 +449,13 @@ vl_api_sockclnt_delete_t_handler (vl_api_sockclnt_delete_t * mp)
}
clib_error_t *
-vl_sock_api_send_fd_msg (int socket_fd, int fd_to_share)
+vl_sock_api_send_fd_msg (int socket_fd, int fds[], int n_fds)
{
struct msghdr mh = { 0 };
struct iovec iov[1];
- char ctl[CMSG_SPACE (sizeof (int))];
- char *msg = "memfd";
+ char ctl[CMSG_SPACE (sizeof (int)) * n_fds];
+ struct cmsghdr *cmsg;
+ char *msg = "fdmsg";
int rv;
iov[0].iov_base = msg;
@@ -462,15 +463,14 @@ vl_sock_api_send_fd_msg (int socket_fd, int fd_to_share)
mh.msg_iov = iov;
mh.msg_iovlen = 1;
- struct cmsghdr *cmsg;
memset (&ctl, 0, sizeof (ctl));
mh.msg_control = ctl;
mh.msg_controllen = sizeof (ctl);
cmsg = CMSG_FIRSTHDR (&mh);
- cmsg->cmsg_len = CMSG_LEN (sizeof (int));
+ cmsg->cmsg_len = CMSG_LEN (sizeof (int) * n_fds);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
- memcpy (CMSG_DATA (cmsg), &fd_to_share, sizeof (int));
+ memcpy (CMSG_DATA (cmsg), fds, sizeof (int) * n_fds);
rv = sendmsg (socket_fd, &mh, 0);
if (rv < 0)
@@ -629,7 +629,7 @@ reply:
cf->write_function (cf);
/* Send the magic "here's your sign (aka fd)" socket message */
- vl_sock_api_send_fd_msg (cf->file_descriptor, memfd->fd);
+ vl_sock_api_send_fd_msg (cf->file_descriptor, &memfd->fd, 1);
}
#define foreach_vlib_api_msg \
diff --git a/src/vlibmemory/socket_api.h b/src/vlibmemory/socket_api.h
index d12b427a6a4..86fd600edbb 100644
--- a/src/vlibmemory/socket_api.h
+++ b/src/vlibmemory/socket_api.h
@@ -77,8 +77,8 @@ void vl_socket_process_api_msg (clib_file_t * uf, vl_api_registration_t * rp,
i8 * input_v);
void vl_sock_api_dump_clients (vlib_main_t * vm, api_main_t * am);
clib_error_t *vl_sock_api_init (vlib_main_t * vm);
-clib_error_t *vl_sock_api_send_fd_msg (int socket_fd, int fd_to_share);
-clib_error_t *vl_sock_api_recv_fd_msg (int socket_fd, int *fd_to_share,
+clib_error_t *vl_sock_api_send_fd_msg (int socket_fd, int fds[], int n_fds);
+clib_error_t *vl_sock_api_recv_fd_msg (int socket_fd, int fds[], int n_fds,
u32 wait);
#endif /* SRC_VLIBMEMORY_SOCKET_API_H_ */
diff --git a/src/vlibmemory/socket_client.c b/src/vlibmemory/socket_client.c
index a49d335e732..3d933deecb6 100644
--- a/src/vlibmemory/socket_client.c
+++ b/src/vlibmemory/socket_client.c
@@ -177,11 +177,12 @@ vl_socket_client_enable_disable (int enable)
}
clib_error_t *
-vl_sock_api_recv_fd_msg (int socket_fd, int *my_fd, u32 wait)
+vl_sock_api_recv_fd_msg (int socket_fd, int fds[], int n_fds, u32 wait)
{
socket_client_main_t *scm = &socket_client_main;
char msgbuf[16];
- char ctl[CMSG_SPACE (sizeof (int)) + CMSG_SPACE (sizeof (struct ucred))];
+ char ctl[CMSG_SPACE (sizeof (int) * n_fds)
+ + CMSG_SPACE (sizeof (struct ucred))];
struct msghdr mh = { 0 };
struct iovec iov[1];
ssize_t size = 0;
@@ -231,7 +232,7 @@ vl_sock_api_recv_fd_msg (int socket_fd, int *my_fd, u32 wait)
}
else if (cmsg->cmsg_type == SCM_RIGHTS)
{
- clib_memcpy (my_fd, CMSG_DATA (cmsg), sizeof (int));
+ clib_memcpy (fds, CMSG_DATA (cmsg), sizeof (int) * n_fds);
}
}
cmsg = CMSG_NXTHDR (&mh, cmsg);
@@ -259,7 +260,7 @@ static void vl_api_sock_init_shm_reply_t_handler
/*
* Check the socket for the magic fd
*/
- error = vl_sock_api_recv_fd_msg (scm->socket_fd, &my_fd, 5);
+ error = vl_sock_api_recv_fd_msg (scm->socket_fd, &my_fd, 1, 5);
if (error)
{
clib_error_report (error);
@@ -409,12 +410,12 @@ vl_socket_client_init_shm (vl_api_shm_elem_config_t * config)
}
clib_error_t *
-vl_socket_client_recv_fd_msg (int *fd_to_recv, u32 wait)
+vl_socket_client_recv_fd_msg (int fds[], int n_fds, u32 wait)
{
socket_client_main_t *scm = &socket_client_main;
if (!scm->socket_fd)
return clib_error_return (0, "no socket");
- return vl_sock_api_recv_fd_msg (scm->client_socket.fd, fd_to_recv, wait);
+ return vl_sock_api_recv_fd_msg (scm->client_socket.fd, fds, n_fds, wait);
}
/*
diff --git a/src/vlibmemory/socket_client.h b/src/vlibmemory/socket_client.h
index 74be5a96f53..5612a9809a5 100644
--- a/src/vlibmemory/socket_client.h
+++ b/src/vlibmemory/socket_client.h
@@ -53,7 +53,7 @@ int vl_socket_client_write (void);
void vl_socket_client_enable_disable (int enable);
void *vl_socket_client_msg_alloc (int nbytes);
int vl_socket_client_init_shm (vl_api_shm_elem_config_t * config);
-clib_error_t *vl_socket_client_recv_fd_msg (int *fd_to_recv, u32 wait);
+clib_error_t *vl_socket_client_recv_fd_msg (int fds[], int n_fds, u32 wait);
#endif /* SRC_VLIBMEMORY_SOCKET_CLIENT_H_ */