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authorMohsin Kazmi <sykazmi@cisco.com>2018-10-23 18:00:47 +0200
committerDamjan Marion <damarion@cisco.com>2019-01-21 23:13:20 +0100
commitd6c15af33f3f153e084f14484e884f3ca68dbc23 (patch)
tree97d7d92f4fb57067f0c24900a5363448df92f8b0 /src/vnet/devices/tap
parent8b5d0b8c3a089e88a8872af939302029eb3434d9 (diff)
virtio: Native virtio driver
Change-Id: Id7fccf2f805e578fb05032aeb2b649a74c3c0e56 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/tap')
-rw-r--r--src/vnet/devices/tap/cli.c100
-rw-r--r--src/vnet/devices/tap/tap.c26
2 files changed, 20 insertions, 106 deletions
diff --git a/src/vnet/devices/tap/cli.c b/src/vnet/devices/tap/cli.c
index 9d86159c574..ee57a72268e 100644
--- a/src/vnet/devices/tap/cli.c
+++ b/src/vnet/devices/tap/cli.c
@@ -172,29 +172,6 @@ tap_show_command_fn (vlib_main_t * vm, unformat_input_t * input,
int show_descr = 0;
clib_error_t *error = 0;
u32 hw_if_index, *hw_if_indices = 0;
- virtio_vring_t *vring;
- int i, j;
- struct feat_struct
- {
- u8 bit;
- char *str;
- };
- struct feat_struct *feat_entry;
-
- static struct feat_struct feat_array[] = {
-#define _(s,b) { .str = #s, .bit = b, },
- foreach_virtio_net_features
-#undef _
- {.str = NULL}
- };
-
- struct feat_struct *flag_entry;
- static struct feat_struct flags_array[] = {
-#define _(b,e,s) { .bit = b, .str = s, },
- foreach_virtio_if_flag
-#undef _
- {.str = NULL}
- };
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
@@ -220,81 +197,8 @@ tap_show_command_fn (vlib_main_t * vm, unformat_input_t * input,
/* *INDENT-ON* */
}
- for (hw_if_index = 0; hw_if_index < vec_len (hw_if_indices); hw_if_index++)
- {
- vnet_hw_interface_t *hi =
- vnet_get_hw_interface (vnm, hw_if_indices[hw_if_index]);
- vif = pool_elt_at_index (mm->interfaces, hi->dev_instance);
- vlib_cli_output (vm, "interface %U", format_vnet_sw_if_index_name,
- vnm, vif->sw_if_index);
- if (vif->host_if_name)
- vlib_cli_output (vm, " name \"%s\"", vif->host_if_name);
- if (vif->net_ns)
- vlib_cli_output (vm, " host-ns \"%s\"", vif->net_ns);
- vlib_cli_output (vm, " flags 0x%x", vif->flags);
- flag_entry = (struct feat_struct *) &flags_array;
- while (flag_entry->str)
- {
- if (vif->flags & (1ULL << flag_entry->bit))
- vlib_cli_output (vm, " %s (%d)", flag_entry->str,
- flag_entry->bit);
- flag_entry++;
- }
- vlib_cli_output (vm, " fd %d", vif->fd);
- vlib_cli_output (vm, " tap-fd %d", vif->tap_fd);
- vlib_cli_output (vm, " features 0x%lx", vif->features);
- feat_entry = (struct feat_struct *) &feat_array;
- while (feat_entry->str)
- {
- if (vif->features & (1ULL << feat_entry->bit))
- vlib_cli_output (vm, " %s (%d)", feat_entry->str,
- feat_entry->bit);
- feat_entry++;
- }
- vlib_cli_output (vm, " remote-features 0x%lx", vif->remote_features);
- feat_entry = (struct feat_struct *) &feat_array;
- while (feat_entry->str)
- {
- if (vif->remote_features & (1ULL << feat_entry->bit))
- vlib_cli_output (vm, " %s (%d)", feat_entry->str,
- feat_entry->bit);
- feat_entry++;
- }
- vec_foreach_index (i, vif->vrings)
- {
- // RX = 0, TX = 1
- vring = vec_elt_at_index (vif->vrings, i);
- vlib_cli_output (vm, " Virtqueue (%s)", (i & 1) ? "TX" : "RX");
- vlib_cli_output (vm,
- " qsz %d, last_used_idx %d, desc_next %d, desc_in_use %d",
- vring->size, vring->last_used_idx, vring->desc_next,
- vring->desc_in_use);
- vlib_cli_output (vm,
- " avail.flags 0x%x avail.idx %d used.flags 0x%x used.idx %d",
- vring->avail->flags, vring->avail->idx,
- vring->used->flags, vring->used->idx);
- vlib_cli_output (vm, " kickfd %d, callfd %d", vring->kick_fd,
- vring->call_fd);
- if (show_descr)
- {
- vlib_cli_output (vm, "\n descriptor table:\n");
- vlib_cli_output (vm,
- " id addr len flags next user_addr\n");
- vlib_cli_output (vm,
- " ===== ================== ===== ====== ===== ==================\n");
- vring = vif->vrings;
- for (j = 0; j < vring->size; j++)
- {
- struct vring_desc *desc = &vring->desc[j];
- vlib_cli_output (vm,
- " %-5d 0x%016lx %-5d 0x%04x %-5d 0x%016lx\n",
- j, desc->addr,
- desc->len,
- desc->flags, desc->next, desc->addr);
- }
- }
- }
- }
+ virtio_show (vm, hw_if_indices, show_descr, VIRTIO_IF_TYPE_TAP);
+
done:
vec_free (hw_if_indices);
return error;
diff --git a/src/vnet/devices/tap/tap.c b/src/vnet/devices/tap/tap.c
index d0ed58c1f06..4f3066a6916 100644
--- a/src/vnet/devices/tap/tap.c
+++ b/src/vnet/devices/tap/tap.c
@@ -130,7 +130,7 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
_IOCTL (vif->fd, VHOST_GET_FEATURES, &vif->remote_features);
- if ((vif->remote_features & (1ULL << VIRTIO_NET_F_MRG_RXBUF)) == 0)
+ if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF)) == 0)
{
args->rv = VNET_API_ERROR_UNSUPPORTED;
args->error = clib_error_return (0, "vhost-net backend doesn't support "
@@ -138,7 +138,8 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
goto error;
}
- if ((vif->remote_features & (1ULL << VIRTIO_RING_F_INDIRECT_DESC)) == 0)
+ if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC)) ==
+ 0)
{
args->rv = VNET_API_ERROR_UNSUPPORTED;
args->error = clib_error_return (0, "vhost-net backend doesn't support "
@@ -146,7 +147,7 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
goto error;
}
- if ((vif->remote_features & (1ULL << VIRTIO_F_VERSION_1)) == 0)
+ if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_F_VERSION_1)) == 0)
{
args->rv = VNET_API_ERROR_UNSUPPORTED;
args->error = clib_error_return (0, "vhost-net backend doesn't support "
@@ -154,9 +155,11 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
goto error;
}
- vif->features |= 1ULL << VIRTIO_NET_F_MRG_RXBUF;
- vif->features |= 1ULL << VIRTIO_F_VERSION_1;
- vif->features |= 1ULL << VIRTIO_RING_F_INDIRECT_DESC;
+ vif->features |= VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF);
+ vif->features |= VIRTIO_FEATURE (VIRTIO_F_VERSION_1);
+ vif->features |= VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC);
+
+ virtio_set_net_hdr_size (vif);
_IOCTL (vif->fd, VHOST_SET_FEATURES, &vif->features);
@@ -349,6 +352,8 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
}
vif->rx_ring_sz = args->rx_ring_sz != 0 ? args->rx_ring_sz : 256;
vif->tx_ring_sz = args->tx_ring_sz != 0 ? args->tx_ring_sz : 256;
+ clib_memcpy (vif->mac_addr, args->mac_addr, 6);
+
vif->host_if_name = args->host_if_name;
args->host_if_name = 0;
vif->net_ns = args->host_namespace;
@@ -363,9 +368,10 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
if (args->host_ip6_prefix_len)
clib_memcpy (&vif->host_ip6_addr, &args->host_ip6_addr, 16);
+ vif->type = VIRTIO_IF_TYPE_TAP;
args->error = ethernet_register_interface (vnm, virtio_device_class.index,
vif->dev_instance,
- args->mac_addr,
+ vif->mac_addr,
&vif->hw_if_index,
virtio_eth_flag_change);
if (args->error)
@@ -386,7 +392,6 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
vnet_hw_interface_set_rx_mode (vnm, vif->hw_if_index, 0,
VNET_HW_INTERFACE_RX_MODE_DEFAULT);
vif->per_interface_next_index = ~0;
- vif->type = VIRTIO_IF_TYPE_TAP;
vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
vnet_hw_interface_set_flags (vnm, vif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
@@ -433,6 +438,9 @@ tap_delete_if (vlib_main_t * vm, u32 sw_if_index)
vif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
+ if (vif->type != VIRTIO_IF_TYPE_TAP)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
/* bring down the interface */
vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
vnet_sw_interface_set_flags (vnm, vif->sw_if_index, 0);
@@ -469,6 +477,8 @@ tap_dump_ifs (tap_interface_details_t ** out_tapids)
/* *INDENT-OFF* */
pool_foreach (vif, mm->interfaces,
+ if (vif->type != VIRTIO_IF_TYPE_TAP)
+ continue;
vec_add2(r_tapids, tapid, 1);
clib_memset (tapid, 0, sizeof (*tapid));
tapid->id = vif->id;