diff options
Diffstat (limited to 'src/vnet')
| -rw-r--r-- | src/vnet/devices/virtio/vhost_user_input.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c index 1c3e1806cb5..a371e57e8e3 100644 --- a/src/vnet/devices/virtio/vhost_user_input.c +++ b/src/vnet/devices/virtio/vhost_user_input.c @@ -544,13 +544,11 @@ vhost_user_if_input (vlib_main_t * vm, /* This depends on the setup but is very consistent * So I think the CPU branch predictor will make a pretty good job * at optimizing the decision. */ - u8 indirect = 0; if (txvq->desc[desc_current].flags & VIRTQ_DESC_F_INDIRECT) { desc_table = map_guest_mem (vui, txvq->desc[desc_current].addr, &map_hint); desc_current = 0; - indirect = 1; if (PREDICT_FALSE (desc_table == 0)) { vlib_error_count (vm, node->node_index, @@ -565,35 +563,36 @@ vhost_user_if_input (vlib_main_t * vm, { virtio_net_hdr_mrg_rxbuf_t *hdr; u8 *b_data; - u16 current = desc_current; - u32 data_offset = desc_data_offset; + u16 current; - if ((data_offset == desc_table[current].len) && - (desc_table[current].flags & VIRTQ_DESC_F_NEXT)) - { - current = desc_table[current].next; - data_offset = 0; - } - hdr = map_guest_mem (vui, desc_table[current].addr, &map_hint); + hdr = map_guest_mem (vui, desc_table[desc_current].addr, &map_hint); if (PREDICT_FALSE (hdr == 0)) { vlib_error_count (vm, node->node_index, VHOST_USER_INPUT_FUNC_ERROR_MMAP_FAIL, 1); goto out; } - b_data = (u8 *) hdr + data_offset; - if (indirect) + if (hdr->hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { - hdr = map_guest_mem (vui, desc_table[desc_current].addr, - &map_hint); - if (PREDICT_FALSE (hdr == 0)) + if ((desc_data_offset == desc_table[desc_current].len) && + (desc_table[desc_current].flags & VIRTQ_DESC_F_NEXT)) { - vlib_error_count (vm, node->node_index, - VHOST_USER_INPUT_FUNC_ERROR_MMAP_FAIL, 1); - goto out; + current = desc_table[desc_current].next; + b_data = map_guest_mem (vui, desc_table[current].addr, + &map_hint); + if (PREDICT_FALSE (b_data == 0)) + { + vlib_error_count (vm, node->node_index, + VHOST_USER_INPUT_FUNC_ERROR_MMAP_FAIL, + 1); + goto out; + } } + else + b_data = (u8 *) hdr + desc_data_offset; + + vhost_user_handle_rx_offload (b_head, b_data, &hdr->hdr); } - vhost_user_handle_rx_offload (b_head, b_data, &hdr->hdr); } while (1) |