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migration/rdma: set the REUSEADDR option for destination

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We hit following error during testing RDMA transport:
in case of migration error, mgmt daemon pick one migration port,
incoming rdma:[::]:8089: RDMA ERROR: Error: could not rdma_bind_addr

Then try another -incoming rdma:[::]:8103, sometime it worked,
sometimes need another try with other ports number.

Set the REUSEADDR option for destination, This allow address could
be reused to avoid rdma_bind_addr error out.

Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Message-Id: <20220208085640.19702-1-jinpu.wang@ionos.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  dgilbert: Fixed up some tabs
This commit is contained in:
Jack Wang 2022-02-08 09:56:40 +01:00 committed by Dr. David Alan Gilbert
parent 675fd3c96b
commit f736e414ee
1 changed files with 7 additions and 0 deletions
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7
migration/rdma.c
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@ -2705,6 +2705,7 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
char ip[40] = "unknown";
struct rdma_addrinfo *res, *e;
char port_str[16];
int reuse = 1;
for (idx = 0; idx < RDMA_WRID_MAX; idx++) {
rdma->wr_data[idx].control_len = 0;
@ -2740,6 +2741,12 @@ static int qemu_rdma_dest_init(RDMAContext *rdma, Error **errp)
goto err_dest_init_bind_addr;
}
ret = rdma_set_option(listen_id, RDMA_OPTION_ID, RDMA_OPTION_ID_REUSEADDR,
&reuse, sizeof reuse);
if (ret) {
ERROR(errp, "Error: could not set REUSEADDR option");
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);