struct smc_clc_msg_hdr *clcm = buf;
struct msghdr msg = {NULL, 0};
int reason_code = 0;
- struct kvec vec;
+ struct kvec vec = {buf, buflen};
int len, datlen;
int krflags;
* so we don't consume any subsequent CLC message or payload data
* in the TCP byte stream
*/
- vec.iov_base = buf;
- vec.iov_len = buflen;
+ /*
+ * Caller must make sure that buflen is no less than
+ * sizeof(struct smc_clc_msg_hdr)
+ */
krflags = MSG_PEEK | MSG_WAITALL;
smc->clcsock->sk->sk_rcvtimeo = CLC_WAIT_TIME;
- len = kernel_recvmsg(smc->clcsock, &msg, &vec, 1,
- sizeof(struct smc_clc_msg_hdr), krflags);
+ iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &vec, 1,
+ sizeof(struct smc_clc_msg_hdr));
+ len = sock_recvmsg(smc->clcsock, &msg, krflags);
if (signal_pending(current)) {
reason_code = -EINTR;
clc_sk->sk_err = EINTR;
}
/* receive the complete CLC message */
- vec.iov_base = buf;
- vec.iov_len = buflen;
memset(&msg, 0, sizeof(struct msghdr));
+ iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &vec, 1, buflen);
krflags = MSG_WAITALL;
smc->clcsock->sk->sk_rcvtimeo = CLC_WAIT_TIME;
- len = kernel_recvmsg(smc->clcsock, &msg, &vec, 1, datlen, krflags);
+ len = sock_recvmsg(smc->clcsock, &msg, krflags);
if (len < datlen) {
smc->sk.sk_err = EPROTO;
reason_code = -EPROTO;