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Diffstat (limited to 'migration/multifd-zstd.c')
-rw-r--r--migration/multifd-zstd.c63
1 files changed, 23 insertions, 40 deletions
diff --git a/migration/multifd-zstd.c b/migration/multifd-zstd.c
index 2d5b61106c..d788d309f2 100644
--- a/migration/multifd-zstd.c
+++ b/migration/multifd-zstd.c
@@ -55,7 +55,7 @@ static int zstd_send_setup(MultiFDSendParams *p, Error **errp)
z->zcs = ZSTD_createCStream();
if (!z->zcs) {
g_free(z);
- error_setg(errp, "multifd %d: zstd createCStream failed", p->id);
+ error_setg(errp, "multifd %u: zstd createCStream failed", p->id);
return -1;
}
@@ -63,17 +63,17 @@ static int zstd_send_setup(MultiFDSendParams *p, Error **errp)
if (ZSTD_isError(res)) {
ZSTD_freeCStream(z->zcs);
g_free(z);
- error_setg(errp, "multifd %d: initCStream failed with error %s",
+ error_setg(errp, "multifd %u: initCStream failed with error %s",
p->id, ZSTD_getErrorName(res));
return -1;
}
- /* To be safe, we reserve twice the size of the packet */
- z->zbuff_len = MULTIFD_PACKET_SIZE * 2;
+ /* This is the maxium size of the compressed buffer */
+ z->zbuff_len = ZSTD_compressBound(MULTIFD_PACKET_SIZE);
z->zbuff = g_try_malloc(z->zbuff_len);
if (!z->zbuff) {
ZSTD_freeCStream(z->zcs);
g_free(z);
- error_setg(errp, "multifd %d: out of memory for zbuff", p->id);
+ error_setg(errp, "multifd %u: out of memory for zbuff", p->id);
return -1;
}
return 0;
@@ -121,13 +121,13 @@ static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
z->out.size = z->zbuff_len;
z->out.pos = 0;
- for (i = 0; i < p->pages->num; i++) {
+ for (i = 0; i < p->normal_num; i++) {
ZSTD_EndDirective flush = ZSTD_e_continue;
- if (i == p->pages->num - 1) {
+ if (i == p->normal_num - 1) {
flush = ZSTD_e_flush;
}
- z->in.src = p->pages->block->host + p->pages->offset[i];
+ z->in.src = p->pages->block->host + p->normal[i];
z->in.size = page_size;
z->in.pos = 0;
@@ -144,16 +144,19 @@ static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
} while (ret > 0 && (z->in.size - z->in.pos > 0)
&& (z->out.size - z->out.pos > 0));
if (ret > 0 && (z->in.size - z->in.pos > 0)) {
- error_setg(errp, "multifd %d: compressStream buffer too small",
+ error_setg(errp, "multifd %u: compressStream buffer too small",
p->id);
return -1;
}
if (ZSTD_isError(ret)) {
- error_setg(errp, "multifd %d: compressStream error %s",
+ error_setg(errp, "multifd %u: compressStream error %s",
p->id, ZSTD_getErrorName(ret));
return -1;
}
}
+ p->iov[p->iovs_num].iov_base = z->zbuff;
+ p->iov[p->iovs_num].iov_len = z->out.pos;
+ p->iovs_num++;
p->next_packet_size = z->out.pos;
p->flags |= MULTIFD_FLAG_ZSTD;
@@ -161,25 +164,6 @@ static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
}
/**
- * zstd_send_write: do the actual write of the data
- *
- * Do the actual write of the comprresed buffer.
- *
- * Returns 0 for success or -1 for error
- *
- * @p: Params for the channel that we are using
- * @used: number of pages used
- * @errp: pointer to an error
- */
-static int zstd_send_write(MultiFDSendParams *p, uint32_t used, Error **errp)
-{
- struct zstd_data *z = p->data;
-
- return qio_channel_write_all(p->c, (void *)z->zbuff, p->next_packet_size,
- errp);
-}
-
-/**
* zstd_recv_setup: setup receive side
*
* Create the compressed channel and buffer.
@@ -198,7 +182,7 @@ static int zstd_recv_setup(MultiFDRecvParams *p, Error **errp)
z->zds = ZSTD_createDStream();
if (!z->zds) {
g_free(z);
- error_setg(errp, "multifd %d: zstd createDStream failed", p->id);
+ error_setg(errp, "multifd %u: zstd createDStream failed", p->id);
return -1;
}
@@ -206,7 +190,7 @@ static int zstd_recv_setup(MultiFDRecvParams *p, Error **errp)
if (ZSTD_isError(ret)) {
ZSTD_freeDStream(z->zds);
g_free(z);
- error_setg(errp, "multifd %d: initDStream failed with error %s",
+ error_setg(errp, "multifd %u: initDStream failed with error %s",
p->id, ZSTD_getErrorName(ret));
return -1;
}
@@ -217,7 +201,7 @@ static int zstd_recv_setup(MultiFDRecvParams *p, Error **errp)
if (!z->zbuff) {
ZSTD_freeDStream(z->zds);
g_free(z);
- error_setg(errp, "multifd %d: out of memory for zbuff", p->id);
+ error_setg(errp, "multifd %u: out of memory for zbuff", p->id);
return -1;
}
return 0;
@@ -258,14 +242,14 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
uint32_t in_size = p->next_packet_size;
uint32_t out_size = 0;
size_t page_size = qemu_target_page_size();
- uint32_t expected_size = p->pages->num * page_size;
+ uint32_t expected_size = p->normal_num * page_size;
uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK;
struct zstd_data *z = p->data;
int ret;
int i;
if (flags != MULTIFD_FLAG_ZSTD) {
- error_setg(errp, "multifd %d: flags received %x flags expected %x",
+ error_setg(errp, "multifd %u: flags received %x flags expected %x",
p->id, flags, MULTIFD_FLAG_ZSTD);
return -1;
}
@@ -279,8 +263,8 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
z->in.size = in_size;
z->in.pos = 0;
- for (i = 0; i < p->pages->num; i++) {
- z->out.dst = p->pages->block->host + p->pages->offset[i];
+ for (i = 0; i < p->normal_num; i++) {
+ z->out.dst = p->host + p->normal[i];
z->out.size = page_size;
z->out.pos = 0;
@@ -297,19 +281,19 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
} while (ret > 0 && (z->in.size - z->in.pos > 0)
&& (z->out.pos < page_size));
if (ret > 0 && (z->out.pos < page_size)) {
- error_setg(errp, "multifd %d: decompressStream buffer too small",
+ error_setg(errp, "multifd %u: decompressStream buffer too small",
p->id);
return -1;
}
if (ZSTD_isError(ret)) {
- error_setg(errp, "multifd %d: decompressStream returned %s",
+ error_setg(errp, "multifd %u: decompressStream returned %s",
p->id, ZSTD_getErrorName(ret));
return ret;
}
out_size += z->out.pos;
}
if (out_size != expected_size) {
- error_setg(errp, "multifd %d: packet size received %d size expected %d",
+ error_setg(errp, "multifd %u: packet size received %u size expected %u",
p->id, out_size, expected_size);
return -1;
}
@@ -320,7 +304,6 @@ static MultiFDMethods multifd_zstd_ops = {
.send_setup = zstd_send_setup,
.send_cleanup = zstd_send_cleanup,
.send_prepare = zstd_send_prepare,
- .send_write = zstd_send_write,
.recv_setup = zstd_recv_setup,
.recv_cleanup = zstd_recv_cleanup,
.recv_pages = zstd_recv_pages
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-26 05:58:05 +0000