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authorMohsin Kazmi <sykazmi@cisco.com>2022-09-08 17:21:20 +0000
committerMohsin Kazmi <sykazmi@cisco.com>2022-10-21 16:32:56 +0000
commit8b90d89b05322ceaaf57e0eda403c4f92546f7b3 (patch)
tree7ee0ecc2128f41e3e2219489dff890430a36c385 /src/vnet/devices/af_packet/device.c
parent65bff88c3671ec6ee561e70f17c60ea9784a39dd (diff)
devices: add support for af-packet v2
Type: feature Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: I2ccaf1d512dcb72e414be8c69cbb538ebbe0e933
Diffstat (limited to 'src/vnet/devices/af_packet/device.c')
-rw-r--r--src/vnet/devices/af_packet/device.c354
1 files changed, 246 insertions, 108 deletions
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c
index 1d14c9b8dcf..2e9b7a4ed83 100644
--- a/src/vnet/devices/af_packet/device.c
+++ b/src/vnet/devices/af_packet/device.c
@@ -61,7 +61,12 @@ typedef struct
u32 buffer_index;
u32 hw_if_index;
u16 queue_id;
- tpacket3_hdr_t tph;
+ u8 is_v2;
+ union
+ {
+ tpacket2_hdr_t tph2;
+ tpacket3_hdr_t tph3;
+ };
vnet_virtio_net_hdr_t vnet_hdr;
vlib_buffer_t buffer;
} af_packet_tx_trace_t;
@@ -91,7 +96,8 @@ format_af_packet_device (u8 * s, va_list * args)
af_packet_queue_t *rx_queue = 0;
af_packet_queue_t *tx_queue = 0;
- s = format (s, "Linux PACKET socket interface");
+ s = format (s, "Linux PACKET socket interface %s",
+ (apif->version == TPACKET_V2) ? "v2" : "v3");
s = format (s, "\n%UFEATURES:", format_white_space, indent);
if (apif->is_qdisc_bypass_enabled)
s = format (s, "\n%Uqdisc-bpass-enabled", format_white_space, indent + 2);
@@ -102,17 +108,20 @@ format_af_packet_device (u8 * s, va_list * args)
vec_foreach (rx_queue, apif->rx_queues)
{
- u32 rx_block_size = rx_queue->rx_req->tp_block_size;
- u32 rx_frame_size = rx_queue->rx_req->tp_frame_size;
- u32 rx_frame_nr = rx_queue->rx_req->tp_frame_nr;
- u32 rx_block_nr = rx_queue->rx_req->tp_block_nr;
+ u32 rx_block_size = rx_queue->rx_req->req.tp_block_size;
+ u32 rx_frame_size = rx_queue->rx_req->req.tp_frame_size;
+ u32 rx_frame_nr = rx_queue->rx_req->req.tp_frame_nr;
+ u32 rx_block_nr = rx_queue->rx_req->req.tp_block_nr;
s = format (s, "\n%URX Queue %u:", format_white_space, indent,
rx_queue->queue_id);
s = format (s, "\n%Ublock size:%d nr:%d frame size:%d nr:%d",
format_white_space, indent + 2, rx_block_size, rx_block_nr,
rx_frame_size, rx_frame_nr);
- s = format (s, " next block:%d", rx_queue->next_rx_block);
+ if (apif->version == TPACKET_V2)
+ s = format (s, " next frame:%d", rx_queue->next_rx_frame);
+ else
+ s = format (s, " next block:%d", rx_queue->next_rx_block);
if (rx_queue->is_rx_pending)
{
s = format (
@@ -125,15 +134,16 @@ format_af_packet_device (u8 * s, va_list * args)
vec_foreach (tx_queue, apif->tx_queues)
{
clib_spinlock_lock (&tx_queue->lockp);
- u32 tx_block_sz = tx_queue->tx_req->tp_block_size;
- u32 tx_frame_sz = tx_queue->tx_req->tp_frame_size;
- u32 tx_frame_nr = tx_queue->tx_req->tp_frame_nr;
- u32 tx_block_nr = tx_queue->tx_req->tp_block_nr;
+ u32 tx_block_sz = tx_queue->tx_req->req.tp_block_size;
+ u32 tx_frame_sz = tx_queue->tx_req->req.tp_frame_size;
+ u32 tx_frame_nr = tx_queue->tx_req->req.tp_frame_nr;
+ u32 tx_block_nr = tx_queue->tx_req->req.tp_block_nr;
int block = 0;
int n_send_req = 0, n_avail = 0, n_sending = 0, n_tot = 0, n_wrong = 0;
u8 *tx_block_start = tx_queue->tx_ring[block];
u32 tx_frame = tx_queue->next_tx_frame;
- tpacket3_hdr_t *tph;
+ tpacket3_hdr_t *tph3;
+ tpacket2_hdr_t *tph2;
s = format (s, "\n%UTX Queue %u:", format_white_space, indent,
tx_queue->queue_id);
@@ -141,22 +151,40 @@ format_af_packet_device (u8 * s, va_list * args)
format_white_space, indent + 2, tx_block_sz, tx_block_nr,
tx_frame_sz, tx_frame_nr);
s = format (s, " next frame:%d", tx_queue->next_tx_frame);
-
- do
- {
- tph = (tpacket3_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz);
- tx_frame = (tx_frame + 1) % tx_frame_nr;
- if (tph->tp_status == 0)
- n_avail++;
- else if (tph->tp_status & TP_STATUS_SEND_REQUEST)
- n_send_req++;
- else if (tph->tp_status & TP_STATUS_SENDING)
- n_sending++;
- else
- n_wrong++;
- n_tot++;
- }
- while (tx_frame != tx_queue->next_tx_frame);
+ if (apif->version & TPACKET_V3)
+ do
+ {
+ tph3 =
+ (tpacket3_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz);
+ tx_frame = (tx_frame + 1) % tx_frame_nr;
+ if (tph3->tp_status == 0)
+ n_avail++;
+ else if (tph3->tp_status & TP_STATUS_SEND_REQUEST)
+ n_send_req++;
+ else if (tph3->tp_status & TP_STATUS_SENDING)
+ n_sending++;
+ else
+ n_wrong++;
+ n_tot++;
+ }
+ while (tx_frame != tx_queue->next_tx_frame);
+ else
+ do
+ {
+ tph2 =
+ (tpacket2_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz);
+ tx_frame = (tx_frame + 1) % tx_frame_nr;
+ if (tph2->tp_status == 0)
+ n_avail++;
+ else if (tph2->tp_status & TP_STATUS_SEND_REQUEST)
+ n_send_req++;
+ else if (tph2->tp_status & TP_STATUS_SENDING)
+ n_sending++;
+ else
+ n_wrong++;
+ n_tot++;
+ }
+ while (tx_frame != tx_queue->next_tx_frame);
s =
format (s, "\n%Uavailable:%d request:%d sending:%d wrong:%d total:%d",
format_white_space, indent + 2, n_avail, n_send_req, n_sending,
@@ -177,24 +205,46 @@ format_af_packet_tx_trace (u8 *s, va_list *va)
s = format (s, "af_packet: hw_if_index %u tx-queue %u", t->hw_if_index,
t->queue_id);
- s =
- format (s,
- "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
- "\n%Usec 0x%x nsec 0x%x vlan %U"
+ if (t->is_v2)
+ {
+ s = format (
+ s,
+ "\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\n%Usec 0x%x nsec 0x%x vlan %U"
#ifdef TP_STATUS_VLAN_TPID_VALID
- " vlan_tpid %u"
+ " vlan_tpid %u"
#endif
- ,
- format_white_space, indent + 2, format_white_space, indent + 4,
- t->tph.tp_status, t->tph.tp_len, t->tph.tp_snaplen, t->tph.tp_mac,
- t->tph.tp_net, format_white_space, indent + 4, t->tph.tp_sec,
- t->tph.tp_nsec, format_ethernet_vlan_tci, t->tph.hv1.tp_vlan_tci
+ ,
+ format_white_space, indent + 2, format_white_space, indent + 4,
+ t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac,
+ t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec,
+ t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci
#ifdef TP_STATUS_VLAN_TPID_VALID
- ,
- t->tph.hv1.tp_vlan_tpid
+ ,
+ t->tph2.tp_vlan_tpid
#endif
- );
-
+ );
+ }
+ else
+ {
+ s = format (
+ s,
+ "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\n%Usec 0x%x nsec 0x%x vlan %U"
+#ifdef TP_STATUS_VLAN_TPID_VALID
+ " vlan_tpid %u"
+#endif
+ ,
+ format_white_space, indent + 2, format_white_space, indent + 4,
+ t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac,
+ t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec,
+ t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci
+#ifdef TP_STATUS_VLAN_TPID_VALID
+ ,
+ t->tph3.hv1.tp_vlan_tpid
+#endif
+ );
+ }
s = format (s,
"\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u"
"\n%Ugso_size %u csum_start %u csum_offset %u",
@@ -214,17 +264,23 @@ format_af_packet_tx_trace (u8 *s, va_list *va)
static void
af_packet_tx_trace (vlib_main_t *vm, vlib_node_runtime_t *node,
- vlib_buffer_t *b0, u32 bi, tpacket3_hdr_t *tph,
+ vlib_buffer_t *b0, u32 bi, void *tph,
vnet_virtio_net_hdr_t *vnet_hdr, u32 hw_if_index,
- u16 queue_id)
+ u16 queue_id, u8 is_v2)
{
af_packet_tx_trace_t *t;
t = vlib_add_trace (vm, node, b0, sizeof (t[0]));
t->hw_if_index = hw_if_index;
t->queue_id = queue_id;
t->buffer_index = bi;
+ t->is_v2 = is_v2;
- clib_memcpy_fast (&t->tph, tph, sizeof (*tph));
+ if (is_v2)
+ clib_memcpy_fast (&t->tph2, (tpacket2_hdr_t *) tph,
+ sizeof (tpacket2_hdr_t));
+ else
+ clib_memcpy_fast (&t->tph3, (tpacket3_hdr_t *) tph,
+ sizeof (tpacket3_hdr_t));
clib_memcpy_fast (&t->vnet_hdr, vnet_hdr, sizeof (*vnet_hdr));
clib_memcpy_fast (&t->buffer, b0, sizeof (*b0) - sizeof (b0->pre_data));
clib_memcpy_fast (t->buffer.pre_data, vlib_buffer_get_current (b0),
@@ -337,95 +393,177 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm,
af_packet_queue_t *tx_queue = vec_elt_at_index (apif->tx_queues, queue_id);
u32 block = 0, frame_size = 0, frame_num = 0, tx_frame = 0;
u8 *block_start = 0;
- tpacket3_hdr_t *tph = 0;
+ tpacket3_hdr_t *tph3 = 0;
+ tpacket2_hdr_t *tph2 = 0;
u32 frame_not_ready = 0;
u8 is_cksum_gso_enabled = (apif->is_cksum_gso_enabled == 1) ? 1 : 0;
+ u32 tpacket_align = 0;
+ u8 is_v2 = (apif->version == TPACKET_V2) ? 1 : 0;
if (tf->shared_queue)
clib_spinlock_lock (&tx_queue->lockp);
- frame_size = tx_queue->tx_req->tp_frame_size;
- frame_num = tx_queue->tx_req->tp_frame_nr;
+ frame_size = tx_queue->tx_req->req.tp_frame_size;
+ frame_num = tx_queue->tx_req->req.tp_frame_nr;
block_start = tx_queue->tx_ring[block];
tx_frame = tx_queue->next_tx_frame;
-
- while (n_left)
+ if (is_v2)
{
- u32 len;
- vnet_virtio_net_hdr_t *vnet_hdr = 0;
- u32 offset = 0;
- vlib_buffer_t *b0 = 0, *b0_first = 0;
- u32 bi, bi_first;
-
- bi = bi_first = buffers[0];
- n_left--;
- buffers++;
-
- tph = (tpacket3_hdr_t *) (block_start + tx_frame * frame_size);
- if (PREDICT_FALSE (tph->tp_status &
- (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
+ tpacket_align = TPACKET_ALIGN (sizeof (tpacket2_hdr_t));
+ while (n_left)
{
- frame_not_ready++;
- goto next;
- }
+ u32 len;
+ vnet_virtio_net_hdr_t *vnet_hdr = 0;
+ u32 offset = 0;
+ vlib_buffer_t *b0 = 0, *b0_first = 0;
+ u32 bi, bi_first;
+
+ bi = bi_first = buffers[0];
+ n_left--;
+ buffers++;
+
+ tph2 = (tpacket2_hdr_t *) (block_start + tx_frame * frame_size);
+ if (PREDICT_FALSE (tph2->tp_status &
+ (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
+ {
+ frame_not_ready++;
+ goto nextv2;
+ }
- b0_first = b0 = vlib_get_buffer (vm, bi);
+ b0_first = b0 = vlib_get_buffer (vm, bi);
- if (PREDICT_TRUE (is_cksum_gso_enabled))
- {
- vnet_hdr =
- (vnet_virtio_net_hdr_t *) ((u8 *) tph + TPACKET_ALIGN (sizeof (
- tpacket3_hdr_t)));
+ if (PREDICT_TRUE (is_cksum_gso_enabled))
+ {
+ vnet_hdr =
+ (vnet_virtio_net_hdr_t *) ((u8 *) tph2 + tpacket_align);
- clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t));
- offset = sizeof (vnet_virtio_net_hdr_t);
+ clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t));
+ offset = sizeof (vnet_virtio_net_hdr_t);
- if (b0->flags & VNET_BUFFER_F_GSO)
- fill_gso_offload (b0, vnet_hdr);
- else if (b0->flags & VNET_BUFFER_F_OFFLOAD)
- fill_cksum_offload (b0, vnet_hdr);
- }
-
- len = b0->current_length;
- clib_memcpy_fast ((u8 *) tph + TPACKET_ALIGN (sizeof (tpacket3_hdr_t)) +
- offset,
- vlib_buffer_get_current (b0), len);
- offset += len;
+ if (b0->flags & VNET_BUFFER_F_GSO)
+ fill_gso_offload (b0, vnet_hdr);
+ else if (b0->flags & VNET_BUFFER_F_OFFLOAD)
+ fill_cksum_offload (b0, vnet_hdr);
+ }
- while (b0->flags & VLIB_BUFFER_NEXT_PRESENT)
- {
- b0 = vlib_get_buffer (vm, b0->next_buffer);
len = b0->current_length;
- clib_memcpy_fast ((u8 *) tph +
- TPACKET_ALIGN (sizeof (tpacket3_hdr_t)) + offset,
+ clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset,
vlib_buffer_get_current (b0), len);
offset += len;
- }
- tph->tp_len = tph->tp_snaplen = offset;
- tph->tp_status = TP_STATUS_SEND_REQUEST;
- n_sent++;
+ while (b0->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ b0 = vlib_get_buffer (vm, b0->next_buffer);
+ len = b0->current_length;
+ clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset,
+ vlib_buffer_get_current (b0), len);
+ offset += len;
+ }
+
+ tph2->tp_len = tph2->tp_snaplen = offset;
+ tph2->tp_status = TP_STATUS_SEND_REQUEST;
+ n_sent++;
- if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED))
+ if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ if (PREDICT_TRUE (is_cksum_gso_enabled))
+ af_packet_tx_trace (vm, node, b0_first, bi_first, tph2,
+ vnet_hdr, apif->hw_if_index, queue_id, 1);
+ else
+ {
+ vnet_virtio_net_hdr_t vnet_hdr2 = {};
+ af_packet_tx_trace (vm, node, b0_first, bi_first, tph2,
+ &vnet_hdr2, apif->hw_if_index, queue_id,
+ 1);
+ }
+ }
+ tx_frame = (tx_frame + 1) % frame_num;
+
+ nextv2:
+ /* check if we've exhausted the ring */
+ if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
+ break;
+ }
+ }
+ else
+ {
+ tpacket_align = TPACKET_ALIGN (sizeof (tpacket3_hdr_t));
+
+ while (n_left)
{
+ u32 len;
+ vnet_virtio_net_hdr_t *vnet_hdr = 0;
+ u32 offset = 0;
+ vlib_buffer_t *b0 = 0, *b0_first = 0;
+ u32 bi, bi_first;
+
+ bi = bi_first = buffers[0];
+ n_left--;
+ buffers++;
+
+ tph3 = (tpacket3_hdr_t *) (block_start + tx_frame * frame_size);
+ if (PREDICT_FALSE (tph3->tp_status &
+ (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
+ {
+ frame_not_ready++;
+ goto nextv3;
+ }
+
+ b0_first = b0 = vlib_get_buffer (vm, bi);
+
if (PREDICT_TRUE (is_cksum_gso_enabled))
- af_packet_tx_trace (vm, node, b0_first, bi_first, tph, vnet_hdr,
- apif->hw_if_index, queue_id);
- else
{
- vnet_virtio_net_hdr_t vnet_hdr2 = {};
- af_packet_tx_trace (vm, node, b0_first, bi_first, tph,
- &vnet_hdr2, apif->hw_if_index, queue_id);
+ vnet_hdr =
+ (vnet_virtio_net_hdr_t *) ((u8 *) tph3 + tpacket_align);
+
+ clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t));
+ offset = sizeof (vnet_virtio_net_hdr_t);
+
+ if (b0->flags & VNET_BUFFER_F_GSO)
+ fill_gso_offload (b0, vnet_hdr);
+ else if (b0->flags & VNET_BUFFER_F_OFFLOAD)
+ fill_cksum_offload (b0, vnet_hdr);
}
- }
- tx_frame = (tx_frame + 1) % frame_num;
- next:
- /* check if we've exhausted the ring */
- if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
- break;
- }
+ len = b0->current_length;
+ clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset,
+ vlib_buffer_get_current (b0), len);
+ offset += len;
+
+ while (b0->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ b0 = vlib_get_buffer (vm, b0->next_buffer);
+ len = b0->current_length;
+ clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset,
+ vlib_buffer_get_current (b0), len);
+ offset += len;
+ }
+
+ tph3->tp_len = tph3->tp_snaplen = offset;
+ tph3->tp_status = TP_STATUS_SEND_REQUEST;
+ n_sent++;
+ if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ if (PREDICT_TRUE (is_cksum_gso_enabled))
+ af_packet_tx_trace (vm, node, b0_first, bi_first, tph3,
+ vnet_hdr, apif->hw_if_index, queue_id, 0);
+ else
+ {
+ vnet_virtio_net_hdr_t vnet_hdr2 = {};
+ af_packet_tx_trace (vm, node, b0_first, bi_first, tph3,
+ &vnet_hdr2, apif->hw_if_index, queue_id,
+ 0);
+ }
+ }
+ tx_frame = (tx_frame + 1) % frame_num;
+
+ nextv3:
+ /* check if we've exhausted the ring */
+ if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
+ break;
+ }
+ }
CLIB_MEMORY_BARRIER ();
if (PREDICT_TRUE (n_sent || tx_queue->is_tx_pending))