migration/rdma: clean up qemu_rdma_dest_init a bit
Do not check for rdma->host being empty twice. This removes a large "if" block, so code indentation is changed. While at it, remove an ugly goto from the loop, replacing it with a cleaner if logic. And finally, there's no need to initialize `ret' variable since is always has a value. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com> -- fixed space detected by Dave Signed-off-by: Juan Quintela <quintela@redhat.com>
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				@ -2364,10 +2364,10 @@ err_rdma_source_connect:
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static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
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{
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    int ret = -EINVAL, idx;
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    int ret, idx;
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    struct rdma_cm_id *listen_id;
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    char ip[40] = "unknown";
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    struct rdma_addrinfo *res;
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    struct rdma_addrinfo *res, *e;
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    char port_str[16];
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    for (idx = 0; idx < RDMA_WRID_MAX; idx++) {
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@ -2375,7 +2375,7 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
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        rdma->wr_data[idx].control_curr = NULL;
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    }
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    if (rdma->host == NULL) {
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    if (!rdma->host || !rdma->host[0]) {
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        ERROR(errp, "RDMA host is not set!");
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        rdma->error_state = -EINVAL;
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        return -1;
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@ -2398,9 +2398,6 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
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    snprintf(port_str, 16, "%d", rdma->port);
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    port_str[15] = '\0';
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    if (rdma->host && strcmp("", rdma->host)) {
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        struct rdma_addrinfo *e;
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    ret = rdma_getaddrinfo(rdma->host, port_str, NULL, &res);
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    if (ret < 0) {
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        ERROR(errp, "could not rdma_getaddrinfo address %s", rdma->host);
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@ -2412,26 +2409,22 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
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            &((struct sockaddr_in *) e->ai_dst_addr)->sin_addr, ip, sizeof ip);
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        trace_qemu_rdma_dest_init_trying(rdma->host, ip);
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        ret = rdma_bind_addr(listen_id, e->ai_dst_addr);
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            if (!ret) {
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        if (ret) {
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            continue;
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        }
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        if (e->ai_family == AF_INET6) {
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            ret = qemu_rdma_broken_ipv6_kernel(errp, listen_id->verbs);
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            if (ret) {
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                continue;
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            }
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        }
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                goto listen;
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            }
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        break;
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    }
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    if (!e) {
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        ERROR(errp, "Error: could not rdma_bind_addr!");
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        goto err_dest_init_bind_addr;
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    } else {
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        ERROR(errp, "migration host and port not specified!");
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        ret = -EINVAL;
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        goto err_dest_init_bind_addr;
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    }
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listen:
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    rdma->listen_id = listen_id;
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    qemu_rdma_dump_gid("dest_init", listen_id);
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