# Copyright (c) 2018 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
add_vpp_plugin(ioam
SOURCES
# iOAM Proof of Transit
lib-pot/pot_util.c
encap/ip6_ioam_pot./*
*------------------------------------------------------------------
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#define _GNU_SOURCE
#include <stdint.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/devices/devices.h>
#include <vnet/interface/rx_queue_funcs.h>
#include <marvell/pp2/pp2.h>
#define foreach_mrvl_pp2_input_error \
_(PPIO_RECV, "pp2_ppio_recv error") \
_(BPOOL_GET_NUM_BUFFS, "pp2_bpool_get_num_buffs error") \
_(BPOOL_PUT_BUFFS, "pp2_bpool_put_buffs error") \
_(BUFFER_ALLOC, "buffer alloc error") \
_(MAC_CE, "MAC error (CRC error)") \
_(MAC_OR, "overrun error") \
_(MAC_RSVD, "unknown MAC error") \
_(MAC_RE, "resource error") \
_(IP_HDR, "ip4 header error")
typedef enum
{
#define _(f,s) MRVL_PP2_INPUT_ERROR_##f,
foreach_mrvl_pp2_input_error
#undef _
MRVL_PP2_INPUT_N_ERROR,
} mrvl_pp2_input_error_t;
static __clib_unused char *mrvl_pp2_input_error_strings[] = {
#define _(n,s) s,
foreach_mrvl_pp2_input_error
#undef _
};
static_always_inline void
mrvl_pp2_input_trace (vlib_main_t * vm, vlib_node_runtime_t * node, u32 next0,
vlib_buffer_t * b0, uword * n_trace,
mrvl_pp2_if_t * ppif, struct pp2_ppio_desc *d)
{
mrvl_pp2_input_trace_t *tr;
vlib_trace_buffer (vm, node, next0, b0,
/* follow_chain */ 0);
vlib_set_trace_count (vm, node, --(*n_trace));
tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->next_index = next0;
tr->hw_if_index = ppif->hw_if_index;
clib_memcpy_fast (&tr->desc, d, sizeof (struct pp2_ppio_desc));
}
static_always_inline u16
mrvl_pp2_set_buf_data_len_flags (vlib_buffer_t * b, struct pp2_ppio_desc *d,
u32 add_flags)
{
u16 len;
len = pp2_ppio_inq_desc_get_pkt_len (d);
b->total_length_not_including_first_buffer = 0;
b->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID | add_flags;
if (add_flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
vnet_buffer (b)->l2_hdr_offset = 2;
if (add_flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID)
{
u16 offset = DM_RXD_GET_L3_OFF (d);
vnet_buffer (b)->l3_hdr_offset = offset;
b->current_data = offset;
b->current_length = len - offset + 2;
}
else
{
b->current_data = 2;
b->current_length = len;
}
if (add_flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID)
vnet_buffer (b)->l4_hdr_offset = vnet_buffer (b)->l3_hdr_offset +
DM_RXD_GET_IPHDR_LEN (d) * 4;
return len;
}
static_always_inline u16
mrvl_pp2_next_from_desc (vlib_node_runtime_t * node, struct pp2_ppio_desc * d,
vlib_buffer_t * b, u32 * next)
{
u8 l3_info;
/* ES bit set means MAC error - drop and count */
if (PREDICT_FALSE (DM_RXD_GET_ES (d)))
{
*next = VNET_DEVICE_INPUT_NEXT_DROP;
u8 ec = DM_RXD_GET_EC (d);
if (ec == 0)
b->error = node->errors[MRVL_PP2_INPUT_ERROR_MAC_CE];
else if (ec == 1)
b->error = node->errors[MRVL_PP2_INPUT_ERROR_MAC_OR];
else if (ec == 2)
b->error = node->errors[MRVL_PP2_INPUT_ERROR_MAC_RSVD];
else if (ec == 3)
b->error = node->errors[MRVL_PP2_INPUT_ERROR_MAC_RE];
return mrvl_pp2_set_buf_data_len_flags (b, d, 0);
}
l3_info = DM_RXD_GET_L3_PRS_INFO (d);
/* ipv4 packet can be value 1, 2 or 3 */
if (PREDICT_TRUE ((l3_info - 1) < 3))
{
if (PREDICT_FALSE (DM_RXD_GET_L3_IP4_HDR_ERR (d) != 0))
{
*next = VNET_DEVICE_INPUT_NEXT_DROP;
b->error = node->errors[MRVL_PP2_INPUT_ERROR_IP_HDR];
return mrvl_pp2_set_buf_data_len_flags (b, d, 0);
}
*next = VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT;
return mrvl_pp2_set_buf_data_len_flags
(b, d,
VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
VNET_BUFFER_F_L4_HDR_OFFSET_VALID | VNET_BUFFER_F_IS_IP4);
}
/* ipv4 packet can be value 4 or 5 */
if (PREDICT_TRUE ((l3_info - 4) < 2))
{
*next = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
return mrvl_pp2_set_buf_data_len_flags
(b, d,
VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
VNET_BUFFER_F_L4_HDR_OFFSET_VALID | VNET_BUFFER_F_IS_IP6);
}
*next = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
return mrvl_pp2_set_buf_data_len_flags (b, d,
VNET_BUFFER_F_L2_HDR_OFFSET_VALID);
}
static_always_inline uword
mrvl_pp2_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, mrvl_pp2_if_t * ppif,
u16 qid)
{
vnet_main_t *vnm = vnet_get_main ();
mrvl_pp2_main_t *ppm = &mrvl_pp2_main;
u32 thread_index = vm->thread_index;
mrvl_pp2_inq_t *inq = vec_elt_at_index (ppif->inqs, qid);
uword n_trace = vlib_get_trace_count (vm, node);
mrvl_pp2_per_thread_data_t *ptd =
vec_elt_at_index (ppm->per_thread_data, thread_index);
u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
u32 sw_if_index[VLIB_N_RX_TX];
u32 n_rx_packets = 0;
u32 n_rx_bytes = 0;
u32 *to_next = 0;
struct pp2_ppio_desc *d;
u16 n_desc = VLIB_FRAME_SIZE;
u32 n_bufs;
u32 *buffers;
int i;
vec_validate_aligned (ptd->descs, n_desc, CLIB_CACHE_LINE_BYTES);
if (PREDICT_FALSE (pp2_ppio_recv (ppif->ppio, 0, qid, ptd->descs, &n_desc)))
{
vlib_error_count (vm, node->node_index, MRVL_PP2_INPUT_ERROR_PPIO_RECV,
1);
n_desc = 0;
}
n_rx_packets = n_desc;
for (i = 0; i < n_desc; i++)
ptd->buffers[i] = pp2_ppio_inq_desc_get_cookie (&ptd->descs[i]);
d = ptd->descs;
buffers = ptd->buffers;
sw_if_index[VLIB_RX] = ppif->sw_if_index;
sw_if_index[VLIB_TX] = (u32) ~ 0;
while (n_desc)
{
u32 n_left_to_next;
vlib_buffer_t *b0, *b1;
u32 bi0, bi1;
u32 next0, next1;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_desc >= 4 && n_left_to_next >= 2)
{
/* prefetch */
bi0 = buffers[0];
bi1 = buffers[1];
to_next[0] = bi0;
to_next[1] = bi1;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
if (PREDICT_TRUE (ppif->per_interface_next_index == ~0))
{
n_rx_bytes += mrvl_pp2_next_from_desc (node, d, b0, &next0);
n_rx_bytes += mrvl_pp2_next_from_desc (node, d + 1, b1, &next1);
vnet_feature_start_device_input_x2 (ppif->sw_if_index, &next0,
&next1, b0, b1);
}
else
{
n_rx_bytes += mrvl_pp2_set_buf_data_len_flags (b0, d, 0);
n_rx_bytes += mrvl_pp2_set_buf_data_len_flags (b1, d + 1, 0);
next0 = next1 = ppif->per_interface_next_index;
}
clib_memcpy_fast (vnet_buffer (b0)->sw_if_index, sw_if_index,
sizeof (sw_if_index));
clib_memcpy_fast (vnet_buffer (b1)->sw_if_index, sw_if_index,
sizeof (sw_if_index));
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
if (PREDICT_FALSE (n_trace > 0))
{
mrvl_pp2_input_trace (vm, node, next0, b0, &n_trace, ppif, d);
if (n_trace > 0)
mrvl_pp2_input_trace (vm, node, next1, b1, &n_trace, ppif,
d + 1);
}
to_next += 2;
n_left_to_next -= 2;
d += 2;
buffers += 2;
n_desc -= 2;
/* enqueue */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
n_left_to_next, bi0, bi1, next0,
next1);
}
while (n_desc && n_left_to_next)
{
u32 bi0 = buffers[0];
to_next[0] = bi0;
b0 = vlib_get_buffer (vm, bi0);
if (PREDICT_TRUE (ppif->per_interface_next_index == ~0))
{
n_rx_bytes += mrvl_pp2_next_from_desc (node, d, b0, &next0);
vnet_feature_start_device_input_x1 (ppif->sw_if_index, &next0,
b0);
}
else
{
n_rx_bytes += mrvl_pp2_set_buf_data_len_flags (b0, d, 0);
next0 = ppif->per_interface_next_index;
}
clib_memcpy_fast (vnet_buffer (b0)->sw_if_index, sw_if_index,
sizeof (sw_if_index));
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
if (PREDICT_FALSE (n_trace > 0))
mrvl_pp2_input_trace (vm, node, next0, b0, &n_trace, ppif, d);
to_next += 1;
n_left_to_next--;
d++;
buffers++;
n_desc--;
/* enqueue */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_increment_combined_counter (vnm->
interface_main.combined_sw_if_counters +
VNET_INTERFACE_COUNTER_RX, thread_index,
ppif->hw_if_index, n_rx_packets,
n_rx_bytes);
if (PREDICT_FALSE (pp2_bpool_get_num_buffs (inq->bpool, &n_bufs)))
{
vlib_error_count (vm, node->node_index,
MRVL_PP2_INPUT_ERROR_BPOOL_GET_NUM_BUFFS, 1);
goto done;
}
n_bufs = inq->size - n_bufs;
while (n_bufs >= MRVL_PP2_BUFF_BATCH_SZ)
{
u16 n_alloc, i;
struct buff_release_entry *e = ptd->bre;
u32 *buffers = ptd->buffers;
n_alloc = vlib_buffer_alloc (vm, ptd->buffers, MRVL_PP2_BUFF_BATCH_SZ);
i = n_alloc;
if (PREDICT_FALSE (n_alloc == 0))
{
vlib_error_count (vm, node->node_index,
MRVL_PP2_INPUT_ERROR_BUFFER_ALLOC, 1);
goto done;
}
while (i--)
{
u32 bi = buffers[0];
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
e->buff.addr = vlib_buffer_get_pa (vm, b) - 64;
e->buff.cookie = bi;
e->bpool = inq->bpool;
e++;
buffers++;
}
i = n_alloc;
if (PREDICT_FALSE (pp2_bpool_put_buffs (ptd->hif, ptd->bre, &i)))
{
vlib_error_count (vm, node->node_index,
MRVL_PP2_INPUT_ERROR_BPOOL_PUT_BUFFS, 1);
vlib_buffer_free (vm, ptd->buffers, n_alloc);
goto done;
}
if (PREDICT_FALSE (i != n_alloc))
vlib_buffer_free (vm, ptd->buffers + i, n_alloc - i);
n_bufs -= i;
}
done:
return n_rx_packets;
}
uword
mrvl_pp2_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 n_rx = 0;
mrvl_pp2_main_t *ppm = &mrvl_pp2_main;
vnet_hw_if_rxq_poll_vector_t *pv;
pv = vnet_hw_if_get_rxq_poll_vector (vm, node);
for (int i = 0; i < vec_len (pv); i++)
{
mrvl_pp2_if_t *ppif;
ppif = vec_elt_at_index (ppm->interfaces, pv[i].dev_instance);
if (ppif->flags & MRVL_PP2_IF_F_ADMIN_UP)
n_rx +=
mrvl_pp2_device_input_inline (vm, node, frame, ppif, pv[i].queue_id);
}
return n_rx;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (mrvl_pp2_input_node) = {
.function = mrvl_pp2_input_fn,
.flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.name = "mrvl-pp2-input",
.sibling_of = "device-input",
.format_trace = format_mrvl_pp2_input_trace,
.type = VLIB_NODE_TYPE_INPUT,
.state = VLIB_NODE_STATE_POLLING,
.n_errors = MRVL_PP2_INPUT_N_ERROR,
.error_strings = mrvl_pp2_input_error_strings,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
