@@ -1530,7 +1530,7 @@ static int qemu_rdma_wait_comp_channel(RDMAContext *rdma,
struct ibv_comp_channel *comp_channel)
{
struct rdma_cm_event *cm_event;
- int ret = -1;
+ int ret;
/*
* Coroutine doesn't start until migration_fd_process_incoming()
@@ -1635,7 +1635,7 @@ static int qemu_rdma_block_for_wrid(RDMAContext *rdma,
uint64_t wrid_requested,
uint32_t *byte_len)
{
- int num_cq_events = 0, ret = 0;
+ int num_cq_events = 0, ret;
struct ibv_cq *cq;
void *cq_ctx;
uint64_t wr_id = RDMA_WRID_NONE, wr_id_in;
@@ -1685,8 +1685,7 @@ static int qemu_rdma_block_for_wrid(RDMAContext *rdma,
num_cq_events++;
- ret = -ibv_req_notify_cq(cq, 0);
- if (ret) {
+ if (ibv_req_notify_cq(cq, 0)) {
goto err_block_for_wrid;
}
@@ -1733,7 +1732,7 @@ err_block_for_wrid:
static int qemu_rdma_post_send_control(RDMAContext *rdma, uint8_t *buf,
RDMAControlHeader *head)
{
- int ret = 0;
+ int ret;
RDMAWorkRequestData *wr = &rdma->wr_data[RDMA_WRID_CONTROL];
struct ibv_send_wr *bad_wr;
struct ibv_sge sge = {
@@ -1890,7 +1889,7 @@ static int qemu_rdma_exchange_send(RDMAContext *rdma, RDMAControlHeader *head,
int *resp_idx,
int (*callback)(RDMAContext *rdma))
{
- int ret = 0;
+ int ret;
/*
* Wait until the dest is ready before attempting to deliver the message
@@ -2890,7 +2889,7 @@ static ssize_t qio_channel_rdma_readv(QIOChannel *ioc,
QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(ioc);
RDMAContext *rdma;
RDMAControlHeader head;
- int ret = 0;
+ int ret;
ssize_t done = 0;
size_t i, len;
@@ -3379,7 +3378,7 @@ static int qemu_rdma_accept(RDMAContext *rdma)
RDMAContext *rdma_return_path = NULL;
struct rdma_cm_event *cm_event;
struct ibv_context *verbs;
- int ret = -EINVAL;
+ int ret;
int idx;
ret = rdma_get_cm_event(rdma->channel, &cm_event);
@@ -3389,7 +3388,6 @@ static int qemu_rdma_accept(RDMAContext *rdma)
if (cm_event->event != RDMA_CM_EVENT_CONNECT_REQUEST) {
rdma_ack_cm_event(cm_event);
- ret = -1;
goto err_rdma_dest_wait;
}
@@ -3402,7 +3400,6 @@ static int qemu_rdma_accept(RDMAContext *rdma)
rdma_return_path = qemu_rdma_data_init(rdma->host_port, NULL);
if (rdma_return_path == NULL) {
rdma_ack_cm_event(cm_event);
- ret = -1;
goto err_rdma_dest_wait;
}
@@ -3417,7 +3414,6 @@ static int qemu_rdma_accept(RDMAContext *rdma)
error_report("Unknown source RDMA version: %d, bailing...",
cap.version);
rdma_ack_cm_event(cm_event);
- ret = -1;
goto err_rdma_dest_wait;
}
@@ -3450,7 +3446,6 @@ static int qemu_rdma_accept(RDMAContext *rdma)
} else if (rdma->verbs != verbs) {
error_report("ibv context not matching %p, %p!", rdma->verbs,
verbs);
- ret = -1;
goto err_rdma_dest_wait;
}
@@ -3504,7 +3499,6 @@ static int qemu_rdma_accept(RDMAContext *rdma)
if (cm_event->event != RDMA_CM_EVENT_ESTABLISHED) {
error_report("rdma_accept not event established");
rdma_ack_cm_event(cm_event);
- ret = -1;
goto err_rdma_dest_wait;
}
@@ -3567,7 +3561,7 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
static RDMARegisterResult results[RDMA_CONTROL_MAX_COMMANDS_PER_MESSAGE];
RDMALocalBlock *block;
void *host_addr;
- int ret = 0;
+ int ret;
int idx = 0;
int count = 0;
int i = 0;
@@ -3596,7 +3590,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
if (head.repeat > RDMA_CONTROL_MAX_COMMANDS_PER_MESSAGE) {
error_report("rdma: Too many requests in this message (%d)."
"Bailing.", head.repeat);
- ret = -EIO;
break;
}
@@ -3612,7 +3605,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
error_report("rdma: 'compress' bad block index %u (vs %d)",
(unsigned int)comp->block_idx,
rdma->local_ram_blocks.nb_blocks);
- ret = -EIO;
goto err;
}
block = &(rdma->local_ram_blocks.block[comp->block_idx]);
@@ -3711,7 +3703,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
error_report("rdma: 'register' bad block index %u (vs %d)",
(unsigned int)reg->current_index,
rdma->local_ram_blocks.nb_blocks);
- ret = -ENOENT;
goto err;
}
block = &(rdma->local_ram_blocks.block[reg->current_index]);
@@ -3721,7 +3712,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
" offset: %" PRIx64 " current_addr: %" PRIx64,
block->block_name, block->offset,
reg->key.current_addr);
- ret = -ERANGE;
goto err;
}
host_addr = (block->local_host_addr +
@@ -3737,7 +3727,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
error_report("rdma: bad chunk for block %s"
" chunk: %" PRIx64,
block->block_name, reg->key.chunk);
- ret = -ERANGE;
goto err;
}
}
@@ -3749,7 +3738,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
(uintptr_t)host_addr, NULL, &tmp_rkey,
chunk, chunk_start, chunk_end)) {
error_report("cannot get rkey");
- ret = -EINVAL;
goto err;
}
reg_result->rkey = tmp_rkey;
@@ -3789,7 +3777,6 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
if (ret != 0) {
perror("rdma unregistration chunk failed");
- ret = -ret;
goto err;
}
@@ -3808,11 +3795,9 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
break;
case RDMA_CONTROL_REGISTER_RESULT:
error_report("Invalid RESULT message at dest.");
- ret = -EIO;
goto err;
default:
error_report("Unknown control message %s", control_desc(head.type));
- ret = -EIO;
goto err;
}
} while (1);
@@ -3916,7 +3901,7 @@ static int qemu_rdma_registration_stop(QEMUFile *f,
QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f));
RDMAContext *rdma;
RDMAControlHeader head = { .len = 0, .repeat = 1 };
- int ret = 0;
+ int ret;
if (migration_in_postcopy()) {
return 0;
@@ -4190,7 +4175,7 @@ void rdma_start_outgoing_migration(void *opaque,
MigrationState *s = opaque;
RDMAContext *rdma_return_path = NULL;
RDMAContext *rdma;
- int ret = 0;
+ int ret;
/* Avoid ram_block_discard_disable(), cannot change during migration. */
if (ram_block_discard_is_required()) {