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migration/rdma: clean up qemu_rdma_dest_init a bit

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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>
This commit is contained in:
Michael Tokarev 2015-02-16 10:50:25 +03:00 committed by Juan Quintela
parent 97baf9d9f7
commit 1dbd2fd9cb
1 changed files with 28 additions and 35 deletions
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63
migration/rdma.c
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@ -2364,10 +2364,10 @@ err_rdma_source_connect:
static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp) static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
{ {
int ret = -EINVAL, idx; int ret, idx;
struct rdma_cm_id *listen_id; struct rdma_cm_id *listen_id;
char ip[40] = "unknown"; char ip[40] = "unknown";
struct rdma_addrinfo *res; struct rdma_addrinfo *res, *e;
char port_str[16]; char port_str[16];
for (idx = 0; idx < RDMA_WRID_MAX; idx++) { for (idx = 0; idx < RDMA_WRID_MAX; idx++) {
@ -2375,7 +2375,7 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
rdma->wr_data[idx].control_curr = NULL; rdma->wr_data[idx].control_curr = NULL;
} }
if (rdma->host == NULL) { if (!rdma->host || !rdma->host[0]) {
ERROR(errp, "RDMA host is not set!"); ERROR(errp, "RDMA host is not set!");
rdma->error_state = -EINVAL; rdma->error_state = -EINVAL;
return -1; return -1;
@ -2398,40 +2398,33 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
snprintf(port_str, 16, "%d", rdma->port); snprintf(port_str, 16, "%d", rdma->port);
port_str[15] = '\0'; port_str[15] = '\0';
if (rdma->host && strcmp("", rdma->host)) { ret = rdma_getaddrinfo(rdma->host, port_str, NULL, &res);
struct rdma_addrinfo *e; if (ret < 0) {
ERROR(errp, "could not rdma_getaddrinfo address %s", rdma->host);
ret = rdma_getaddrinfo(rdma->host, port_str, NULL, &res); goto err_dest_init_bind_addr;
if (ret < 0) { }
ERROR(errp, "could not rdma_getaddrinfo address %s", rdma->host);
goto err_dest_init_bind_addr; for (e = res; e != NULL; e = e->ai_next) {
} inet_ntop(e->ai_family,
&((struct sockaddr_in *) e->ai_dst_addr)->sin_addr, ip, sizeof ip);
for (e = res; e != NULL; e = e->ai_next) { trace_qemu_rdma_dest_init_trying(rdma->host, ip);
inet_ntop(e->ai_family, ret = rdma_bind_addr(listen_id, e->ai_dst_addr);
&((struct sockaddr_in *) e->ai_dst_addr)->sin_addr, ip, sizeof ip); if (ret) {
trace_qemu_rdma_dest_init_trying(rdma->host, ip); continue;
ret = rdma_bind_addr(listen_id, e->ai_dst_addr); }
if (!ret) { if (e->ai_family == AF_INET6) {
if (e->ai_family == AF_INET6) { ret = qemu_rdma_broken_ipv6_kernel(errp, listen_id->verbs);
ret = qemu_rdma_broken_ipv6_kernel(errp, listen_id->verbs); if (ret) {
if (ret) { continue;
continue; }
} }
} break;
}
goto listen;
} if (!e) {
} ERROR(errp, "Error: could not rdma_bind_addr!");
ERROR(errp, "Error: could not rdma_bind_addr!");
goto err_dest_init_bind_addr;
} else {
ERROR(errp, "migration host and port not specified!");
ret = -EINVAL;
goto err_dest_init_bind_addr; goto err_dest_init_bind_addr;
} }
listen:
rdma->listen_id = listen_id; rdma->listen_id = listen_id;
qemu_rdma_dump_gid("dest_init", listen_id); qemu_rdma_dump_gid("dest_init", listen_id);