On 08/07/2013 07:05 PM, mrhi...@linux.vnet.ibm.com wrote: > From: "Michael R. Hines" <mrhi...@us.ibm.com> > > getaddrinfo() already knows what it's doing, > wqand can potentially return multiple addresses. > > Signed-off-by: Michael R. Hines <mrhi...@us.ibm.com> > --- > migration-rdma.c | 56 > ++++++++++++++++++++++++++++-------------------------- > 1 file changed, 29 insertions(+), 27 deletions(-) > > diff --git a/migration-rdma.c b/migration-rdma.c > index 30e08cd..d71cca5 100644 > --- a/migration-rdma.c > +++ b/migration-rdma.c > @@ -392,7 +392,6 @@ typedef struct RDMAContext { > uint64_t unregistrations[RDMA_SIGNALED_SEND_MAX]; > > GHashTable *blockmap; > - bool ipv6; > } RDMAContext; > > /* > @@ -745,7 +744,7 @@ static int qemu_rdma_resolve_host(RDMAContext *rdma, > Error **errp) > char port_str[16]; > struct rdma_cm_event *cm_event; > char ip[40] = "unknown"; > - int af = rdma->ipv6 ? PF_INET6 : PF_INET; > + struct addrinfo *e; > > if (rdma->host == NULL || !strcmp(rdma->host, "")) { > ERROR(errp, "RDMA hostname has not been set"); > @@ -775,18 +774,23 @@ static int qemu_rdma_resolve_host(RDMAContext *rdma, > Error **errp) > goto err_resolve_get_addr; > } > > - inet_ntop(af, &((struct sockaddr_in *) res->ai_addr)->sin_addr, > - ip, sizeof ip); > - DPRINTF("%s => %s\n", rdma->host, ip); > + for (e = res; e != NULL; e = e->ai_next) { > + inet_ntop(e->ai_family, > + &((struct sockaddr_in *) e->ai_addr)->sin_addr, ip, sizeof ip); > + DPRINTF("Trying %s => %s\n", rdma->host, ip); > > - /* resolve the first address */ > - ret = rdma_resolve_addr(rdma->cm_id, NULL, res->ai_addr, > - RDMA_RESOLVE_TIMEOUT_MS); > - if (ret) { > - ERROR(errp, "could not resolve address %s", rdma->host); > - goto err_resolve_get_addr; > + /* resolve the first address */ > + ret = rdma_resolve_addr(rdma->cm_id, NULL, e->ai_addr, > + RDMA_RESOLVE_TIMEOUT_MS); > + if (!ret) { > + goto route; > + } > } > > + ERROR(errp, "could not resolve address %s", rdma->host); > + goto err_resolve_get_addr; > + > +route: > qemu_rdma_dump_gid("source_resolve_addr", rdma->cm_id); > > ret = rdma_get_cm_event(rdma->channel, &cm_event); > @@ -2260,8 +2264,6 @@ err_rdma_source_connect: > static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp) > { > int ret = -EINVAL, idx; > - int af = rdma->ipv6 ? PF_INET6 : PF_INET; > - struct sockaddr_in sin; > struct rdma_cm_id *listen_id; > char ip[40] = "unknown"; > struct addrinfo *res; > @@ -2292,35 +2294,36 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, > Error **errp) > goto err_dest_init_create_listen_id; > } > > - memset(&sin, 0, sizeof(sin)); > - sin.sin_family = af; > - sin.sin_port = htons(rdma->port); > snprintf(port_str, 16, "%d", rdma->port); > port_str[15] = '\0'; > > if (rdma->host && strcmp("", rdma->host)) { > + struct addrinfo *e; > + > ret = getaddrinfo(rdma->host, port_str, NULL, &res); > if (ret < 0) { > ERROR(errp, "could not 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_addr)->sin_addr, ip, sizeof > ip); > + DPRINTF("Trying %s => %s\n", rdma->host, ip); > + ret = rdma_bind_addr(listen_id, e->ai_addr); > + if (!ret) { > + goto listen; > + } > + } > > - inet_ntop(af, &((struct sockaddr_in *) res->ai_addr)->sin_addr, > - ip, sizeof ip); > + 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; > } > - > - DPRINTF("%s => %s\n", rdma->host, ip); > - > - ret = rdma_bind_addr(listen_id, res->ai_addr); > - if (ret) { > - ERROR(errp, "Error: could not rdma_bind_addr!"); > - goto err_dest_init_bind_addr; > - } > +listen: > > rdma->listen_id = listen_id; > qemu_rdma_dump_gid("dest_init", listen_id); > @@ -2351,7 +2354,6 @@ static void *qemu_rdma_data_init(const char *host_port, > Error **errp) > if (addr != NULL) { > rdma->port = atoi(addr->port); > rdma->host = g_strdup(addr->host); > - rdma->ipv6 = addr->ipv6; > } else { > ERROR(errp, "bad RDMA migration address '%s'", host_port); > g_free(rdma); >
Looks good, Reviewed-by: Orit Wasserman <owass...@redhat.com>