mirror of https://github.com/xemu-project/xemu.git
hw/block/nvme: consolidate qsg/iov clearing
Always destroy the request qsg/iov at the end of request use. Signed-off-by: Klaus Jensen <k.jensen@samsung.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
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@ -232,6 +232,17 @@ static void nvme_req_clear(NvmeRequest *req)
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memset(&req->cqe, 0x0, sizeof(req->cqe));
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}
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static void nvme_req_exit(NvmeRequest *req)
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{
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if (req->qsg.sg) {
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qemu_sglist_destroy(&req->qsg);
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}
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if (req->iov.iov) {
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qemu_iovec_destroy(&req->iov);
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}
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}
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static uint16_t nvme_map_addr_cmb(NvmeCtrl *n, QEMUIOVector *iov, hwaddr addr,
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size_t len)
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{
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@ -312,15 +323,14 @@ static uint16_t nvme_map_prp(QEMUSGList *qsg, QEMUIOVector *iov, uint64_t prp1,
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status = nvme_map_addr(n, qsg, iov, prp1, trans_len);
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if (status) {
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goto unmap;
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return status;
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}
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len -= trans_len;
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if (len) {
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if (unlikely(!prp2)) {
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trace_pci_nvme_err_invalid_prp2_missing();
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status = NVME_INVALID_FIELD | NVME_DNR;
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goto unmap;
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return NVME_INVALID_FIELD | NVME_DNR;
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}
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if (len > n->page_size) {
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@ -341,13 +351,11 @@ static uint16_t nvme_map_prp(QEMUSGList *qsg, QEMUIOVector *iov, uint64_t prp1,
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if (i == n->max_prp_ents - 1 && len > n->page_size) {
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if (unlikely(!prp_ent || prp_ent & (n->page_size - 1))) {
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trace_pci_nvme_err_invalid_prplist_ent(prp_ent);
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status = NVME_INVALID_FIELD | NVME_DNR;
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goto unmap;
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return NVME_INVALID_FIELD | NVME_DNR;
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}
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if (prp_list_in_cmb != nvme_addr_is_cmb(n, prp_ent)) {
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status = NVME_INVALID_USE_OF_CMB | NVME_DNR;
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goto unmap;
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return NVME_INVALID_USE_OF_CMB | NVME_DNR;
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}
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i = 0;
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@ -360,14 +368,13 @@ static uint16_t nvme_map_prp(QEMUSGList *qsg, QEMUIOVector *iov, uint64_t prp1,
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if (unlikely(!prp_ent || prp_ent & (n->page_size - 1))) {
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trace_pci_nvme_err_invalid_prplist_ent(prp_ent);
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status = NVME_INVALID_FIELD | NVME_DNR;
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goto unmap;
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return NVME_INVALID_FIELD | NVME_DNR;
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}
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trans_len = MIN(len, n->page_size);
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status = nvme_map_addr(n, qsg, iov, prp_ent, trans_len);
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if (status) {
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goto unmap;
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return status;
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}
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len -= trans_len;
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@ -376,27 +383,16 @@ static uint16_t nvme_map_prp(QEMUSGList *qsg, QEMUIOVector *iov, uint64_t prp1,
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} else {
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if (unlikely(prp2 & (n->page_size - 1))) {
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trace_pci_nvme_err_invalid_prp2_align(prp2);
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status = NVME_INVALID_FIELD | NVME_DNR;
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goto unmap;
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return NVME_INVALID_FIELD | NVME_DNR;
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}
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status = nvme_map_addr(n, qsg, iov, prp2, len);
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if (status) {
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goto unmap;
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return status;
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}
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}
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}
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return NVME_SUCCESS;
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unmap:
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if (iov && iov->iov) {
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qemu_iovec_destroy(iov);
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}
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if (qsg && qsg->sg) {
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qemu_sglist_destroy(qsg);
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}
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return status;
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}
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static uint16_t nvme_dma_prp(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
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@ -481,6 +477,7 @@ static void nvme_post_cqes(void *opaque)
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nvme_inc_cq_tail(cq);
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pci_dma_write(&n->parent_obj, addr, (void *)&req->cqe,
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sizeof(req->cqe));
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nvme_req_exit(req);
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QTAILQ_INSERT_TAIL(&sq->req_list, req, entry);
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}
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if (cq->tail != cq->head) {
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@ -617,13 +614,6 @@ static void nvme_rw_cb(void *opaque, int ret)
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req->status = NVME_INTERNAL_DEV_ERROR;
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}
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if (req->qsg.nalloc) {
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qemu_sglist_destroy(&req->qsg);
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}
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if (req->iov.nalloc) {
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qemu_iovec_destroy(&req->iov);
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}
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nvme_enqueue_req_completion(cq, req);
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}
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