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drivers: modem: ublox-sara-r4: implemented sendmsg

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Implemented sendmsg

Tested using Sara U201 and the MQTT protocol library.

Signed-off-by: Hans Wilmers <hans@wilmers.no>
This commit is contained in:
Hans Wilmers 2020-04-17 15:54:34 +02:00 • committed by Jukka Rissanen
commit 5d6770aeea
1 changed files with 36 additions and 1 deletions
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37
drivers/modem/ublox-sara-r4.c
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@ -70,6 +70,7 @@ static struct modem_pin modem_pins[] = {
#define MDM_CMD_CONN_TIMEOUT K_SECONDS(120)
#define MDM_REGISTRATION_TIMEOUT K_SECONDS(180)
#define MDM_PROMPT_CMD_DELAY K_MSEC(75)
#define MDM_SENDMSG_SLEEP K_MSEC(1)
#define MDM_MAX_DATA_LENGTH 1024
#define MDM_RECV_MAX_BUF 30
@ -1248,6 +1249,40 @@ static ssize_t offload_write(void *obj, const void *buffer, size_t count)
return offload_sendto(obj, buffer, count, 0, NULL, 0);
}
static ssize_t offload_sendmsg(void *obj, const struct msghdr *msg, int flags)
{
ssize_t sent = 0;
int rc;
LOG_DBG("msg_iovlen:%d flags:%d", msg->msg_iovlen, flags);
for (int i = 0; i < msg->msg_iovlen; i++) {
const char *buf = msg->msg_iov[i].iov_base;
size_t len = msg->msg_iov[i].iov_len;
while (len > 0) {
rc = offload_sendto(obj, buf, len, flags,
msg->msg_name,
msg->msg_namelen);
if (rc < 0) {
if (rc == -EAGAIN) {
k_sleep(MDM_SENDMSG_SLEEP);
} else {
sent = rc;
break;
}
} else {
sent += rc;
buf += rc;
len -= rc;
}
}
}
return (ssize_t)sent;
}
static const struct socket_op_vtable offload_socket_fd_op_vtable = {
.fd_vtable = {
.read = offload_read,
@ -1260,7 +1295,7 @@ static const struct socket_op_vtable offload_socket_fd_op_vtable = {
.recvfrom = offload_recvfrom,
.listen = NULL,
.accept = NULL,
.sendmsg = NULL,
.sendmsg = offload_sendmsg,
.getsockopt = NULL,
.setsockopt = NULL,
};