vhost/crypto: fix build with GCC 12
GCC 12 raises the following warning:
In file included from ../lib/mempool/rte_mempool.h:46,
from ../lib/mbuf/rte_mbuf.h:38,
from ../lib/vhost/vhost_crypto.c:7:
../lib/vhost/vhost_crypto.c: In function ‘rte_vhost_crypto_fetch_requests’:
../lib/eal/x86/include/rte_memcpy.h:371:9: warning: array subscript 1 is
outside array bounds of ‘struct virtio_crypto_op_data_req[1]’
[-Warray-bounds]
371 | rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../lib/vhost/vhost_crypto.c:1178:42: note: while referencing ‘req’
1178 | struct virtio_crypto_op_data_req req;
| ^~~
Split this function and separate the per descriptor copy.
This makes the code clearer, and the compiler happier.
Note: logs for errors have been moved to callers to avoid duplicates.
Fixes: 3c79609fda
("vhost/crypto: handle virtually non-contiguous buffers")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
parent
cac75b2d2a
commit
4414bb6701
@ -565,94 +565,58 @@ get_data_ptr(struct vhost_crypto_data_req *vc_req,
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return data;
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}
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static __rte_always_inline uint32_t
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copy_data_from_desc(void *dst, struct vhost_crypto_data_req *vc_req,
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struct vhost_crypto_desc *desc, uint32_t size)
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{
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uint64_t remain;
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uint64_t addr;
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remain = RTE_MIN(desc->len, size);
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addr = desc->addr;
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do {
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uint64_t len;
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void *src;
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len = remain;
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src = IOVA_TO_VVA(void *, vc_req, addr, &len, VHOST_ACCESS_RO);
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if (unlikely(src == NULL || len == 0))
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return 0;
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rte_memcpy(dst, src, len);
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remain -= len;
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/* cast is needed for 32-bit architecture */
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dst = RTE_PTR_ADD(dst, (size_t)len);
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addr += len;
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} while (unlikely(remain != 0));
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return RTE_MIN(desc->len, size);
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}
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static __rte_always_inline int
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copy_data(void *dst_data, struct vhost_crypto_data_req *vc_req,
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struct vhost_crypto_desc *head,
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struct vhost_crypto_desc **cur_desc,
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uint32_t size, uint32_t max_n_descs)
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copy_data(void *data, struct vhost_crypto_data_req *vc_req,
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struct vhost_crypto_desc *head, struct vhost_crypto_desc **cur_desc,
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uint32_t size, uint32_t max_n_descs)
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{
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struct vhost_crypto_desc *desc = *cur_desc;
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uint64_t remain, addr, dlen, len;
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uint32_t to_copy;
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uint8_t *data = dst_data;
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uint8_t *src;
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int left = size;
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uint32_t left = size;
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to_copy = RTE_MIN(desc->len, (uint32_t)left);
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dlen = to_copy;
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src = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
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VHOST_ACCESS_RO);
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if (unlikely(!src || !dlen))
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return -1;
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do {
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uint32_t copied;
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rte_memcpy((uint8_t *)data, src, dlen);
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data += dlen;
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if (unlikely(dlen < to_copy)) {
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remain = to_copy - dlen;
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addr = desc->addr + dlen;
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while (remain) {
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len = remain;
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src = IOVA_TO_VVA(uint8_t *, vc_req, addr, &len,
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VHOST_ACCESS_RO);
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if (unlikely(!src || !len)) {
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VC_LOG_ERR("Failed to map descriptor");
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return -1;
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}
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rte_memcpy(data, src, len);
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addr += len;
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remain -= len;
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data += len;
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}
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}
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left -= to_copy;
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while (desc >= head && desc - head < (int)max_n_descs && left) {
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desc++;
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to_copy = RTE_MIN(desc->len, (uint32_t)left);
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dlen = to_copy;
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src = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen,
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VHOST_ACCESS_RO);
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if (unlikely(!src || !dlen)) {
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VC_LOG_ERR("Failed to map descriptor");
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copied = copy_data_from_desc(data, vc_req, desc, left);
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if (copied == 0)
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return -1;
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}
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left -= copied;
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data = RTE_PTR_ADD(data, copied);
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desc++;
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} while (desc < head + max_n_descs && left != 0);
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rte_memcpy(data, src, dlen);
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data += dlen;
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if (unlikely(dlen < to_copy)) {
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remain = to_copy - dlen;
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addr = desc->addr + dlen;
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while (remain) {
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len = remain;
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src = IOVA_TO_VVA(uint8_t *, vc_req, addr, &len,
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VHOST_ACCESS_RO);
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if (unlikely(!src || !len)) {
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VC_LOG_ERR("Failed to map descriptor");
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return -1;
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}
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rte_memcpy(data, src, len);
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addr += len;
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remain -= len;
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data += len;
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}
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}
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left -= to_copy;
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}
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if (unlikely(left > 0)) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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if (unlikely(left != 0))
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return -1;
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}
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if (unlikely(desc - head == (int)max_n_descs))
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if (unlikely(desc == head + max_n_descs))
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*cur_desc = NULL;
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else
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*cur_desc = desc + 1;
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@ -852,6 +816,7 @@ prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
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/* iv */
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if (unlikely(copy_data(iv_data, vc_req, head, &desc,
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cipher->para.iv_len, max_n_descs))) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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ret = VIRTIO_CRYPTO_BADMSG;
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goto error_exit;
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}
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@ -883,6 +848,7 @@ prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
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if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *),
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vc_req, head, &desc, cipher->para.src_data_len,
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max_n_descs) < 0)) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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ret = VIRTIO_CRYPTO_BADMSG;
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goto error_exit;
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}
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@ -1006,6 +972,7 @@ prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
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/* iv */
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if (unlikely(copy_data(iv_data, vc_req, head, &desc,
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chain->para.iv_len, max_n_descs) < 0)) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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ret = VIRTIO_CRYPTO_BADMSG;
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goto error_exit;
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}
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@ -1037,6 +1004,7 @@ prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
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if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *),
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vc_req, head, &desc, chain->para.src_data_len,
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max_n_descs) < 0)) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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ret = VIRTIO_CRYPTO_BADMSG;
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goto error_exit;
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}
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@ -1121,6 +1089,7 @@ prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
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if (unlikely(copy_data(digest_addr, vc_req, head, &digest_desc,
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chain->para.hash_result_len,
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max_n_descs) < 0)) {
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VC_LOG_ERR("Incorrect virtio descriptor");
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ret = VIRTIO_CRYPTO_BADMSG;
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goto error_exit;
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}
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