#include "qemu-error.h"
#include "qemu-option.h"
#include "qemu_socket.h"
+#include "iov.h"
typedef struct NetSocketState {
NetClientState nc;
int state; /* 0 = getting length, 1 = getting data */
unsigned int index;
unsigned int packet_len;
+ unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */
uint8_t buf[4096];
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */
qemu_flush_queued_packets(&s->nc);
}
-/* XXX: we consider we can send the whole packet without blocking */
static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
- uint32_t len;
- len = htonl(size);
+ uint32_t len = htonl(size);
+ struct iovec iov[] = {
+ {
+ .iov_base = &len,
+ .iov_len = sizeof(len),
+ }, {
+ .iov_base = (void *)buf,
+ .iov_len = size,
+ },
+ };
+ size_t remaining;
+ ssize_t ret;
+
+ remaining = iov_size(iov, 2) - s->send_index;
+ ret = iov_send(s->fd, iov, 2, s->send_index, remaining);
- send_all(s->fd, (const uint8_t *)&len, sizeof(len));
- return send_all(s->fd, buf, size);
+ if (ret == -1 && errno == EAGAIN) {
+ ret = 0; /* handled further down */
+ }
+ if (ret == -1) {
+ s->send_index = 0;
+ return -errno;
+ }
+ if (ret < (ssize_t)remaining) {
+ s->send_index += ret;
+ net_socket_write_poll(s, true);
+ return 0;
+ }
+ s->send_index = 0;
+ return size;
}
static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size)