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-rw-r--r--src/vnet/devices/af_packet/af_packet.c87
-rw-r--r--src/vnet/devices/af_packet/af_packet.h17
-rw-r--r--src/vnet/devices/af_packet/device.c21
-rw-r--r--src/vnet/devices/af_packet/node.c347
4 files changed, 274 insertions, 198 deletions
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
index bc9caac82f2..60eadf2b0dc 100644
--- a/src/vnet/devices/af_packet/af_packet.c
+++ b/src/vnet/devices/af_packet/af_packet.c
@@ -47,15 +47,13 @@ VNET_HW_INTERFACE_CLASS (af_packet_ip_device_hw_interface_class, static) = {
#define AF_PACKET_DEFAULT_TX_FRAME_SIZE (2048 * 5)
#define AF_PACKET_TX_BLOCK_NR 1
-#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 1024
-#define AF_PACKET_DEFAULT_RX_FRAME_SIZE (2048 * 5)
-#define AF_PACKET_RX_BLOCK_NR 1
+#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 256
+#define AF_PACKET_DEFAULT_RX_FRAME_SIZE 2048
+#define AF_PACKET_RX_BLOCK_NR 20
/*defined in net/if.h but clashes with dpdk headers */
unsigned int if_nametoindex (const char *ifname);
-typedef struct tpacket_req tpacket_req_t;
-
static clib_error_t *
af_packet_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
u32 frame_size)
@@ -130,14 +128,17 @@ is_bridge (const u8 * host_if_name)
}
static int
-create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
- tpacket_req_t * tx_req, int *fd, u8 ** ring)
+create_packet_v3_sock (int host_if_index, tpacket_req3_t *rx_req,
+ tpacket_req3_t *tx_req, int *fd, u8 **ring,
+ u32 *hdrlen_ptr)
{
af_packet_main_t *apm = &af_packet_main;
- int ret;
struct sockaddr_ll sll;
- int ver = TPACKET_V2;
- socklen_t req_sz = sizeof (struct tpacket_req);
+ socklen_t req_sz = sizeof (tpacket_req3_t);
+ int ret;
+ int ver = TPACKET_V3;
+ u32 hdrlen = 0;
+ u32 len = sizeof (hdrlen);
u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr +
tx_req->tp_block_size * tx_req->tp_block_nr;
@@ -166,19 +167,33 @@ create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver)) < 0)
{
- vlib_log_debug (apm->log_class,
- "Failed to set rx packet interface version: %s (errno %d)",
- strerror (errno), errno);
+ vlib_log_debug (
+ apm->log_class,
+ "Failed to set rx packet interface version: %s (errno %d)",
+ strerror (errno), errno);
ret = VNET_API_ERROR_SYSCALL_ERROR_1;
goto error;
}
+ if (getsockopt (*fd, SOL_PACKET, PACKET_HDRLEN, &hdrlen, &len) < 0)
+ {
+ vlib_log_debug (
+ apm->log_class,
+ "Failed to get packet hdr len error handling option: %s (errno %d)",
+ strerror (errno), errno);
+ ret = VNET_API_ERROR_SYSCALL_ERROR_1;
+ goto error;
+ }
+ else
+ *hdrlen_ptr = hdrlen;
+
int opt = 1;
if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt)) < 0)
{
- vlib_log_debug (apm->log_class,
- "Failed to set packet tx ring error handling option: %s (errno %d)",
- strerror (errno), errno);
+ vlib_log_debug (
+ apm->log_class,
+ "Failed to set packet tx ring error handling option: %s (errno %d)",
+ strerror (errno), errno);
ret = VNET_API_ERROR_SYSCALL_ERROR_1;
goto error;
}
@@ -213,9 +228,8 @@ create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
goto error;
}
- *ring =
- mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd,
- 0);
+ *ring = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
+ *fd, 0);
if (*ring == MAP_FAILED)
{
vlib_log_debug (apm->log_class, "mmap failure: %s (errno %d)",
@@ -240,8 +254,8 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
af_packet_main_t *apm = &af_packet_main;
vlib_main_t *vm = vlib_get_main ();
int ret, fd = -1, fd2 = -1;
- struct tpacket_req *rx_req = 0;
- struct tpacket_req *tx_req = 0;
+ tpacket_req3_t *rx_req = 0;
+ tpacket_req3_t *tx_req = 0;
struct ifreq ifr;
u8 *ring = 0;
af_packet_if_t *apif = 0;
@@ -255,6 +269,8 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
int host_if_index = -1;
u32 rx_frames_per_block, tx_frames_per_block;
u32 rx_frame_size, tx_frame_size;
+ u32 hdrlen = 0;
+ u32 i = 0;
p = mhash_get (&apm->if_index_by_host_if_name, arg->host_if_name);
if (p)
@@ -282,12 +298,18 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
rx_req->tp_frame_size = rx_frame_size;
rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR;
rx_req->tp_frame_nr = AF_PACKET_RX_BLOCK_NR * rx_frames_per_block;
+ rx_req->tp_retire_blk_tov = 0;
+ rx_req->tp_feature_req_word = 0;
+ rx_req->tp_sizeof_priv = 0;
vec_validate (tx_req, 0);
tx_req->tp_block_size = tx_frame_size * tx_frames_per_block;
tx_req->tp_frame_size = tx_frame_size;
tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR;
tx_req->tp_frame_nr = AF_PACKET_TX_BLOCK_NR * tx_frames_per_block;
+ tx_req->tp_retire_blk_tov = 0;
+ tx_req->tp_sizeof_priv = 0;
+ tx_req->tp_feature_req_word = 0;
/*
* make sure host side of interface is 'UP' before binding AF_PACKET
@@ -343,7 +365,8 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
fd2 = -1;
}
- ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring);
+ ret =
+ create_packet_v3_sock (host_if_index, rx_req, tx_req, &fd, &ring, &hdrlen);
if (ret != 0)
goto error;
@@ -359,15 +382,29 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
apif->host_if_index = host_if_index;
apif->fd = fd;
- apif->rx_ring = ring;
- apif->tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
+
+ vec_validate (apif->rx_ring, rx_req->tp_block_nr - 1);
+ vec_foreach_index (i, apif->rx_ring)
+ {
+ apif->rx_ring[i] = ring + i * rx_req->tp_block_size;
+ }
+
+ ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
+
+ vec_validate (apif->tx_ring, tx_req->tp_block_nr - 1);
+ vec_foreach_index (i, apif->tx_ring)
+ {
+ apif->tx_ring[i] = ring + i * tx_req->tp_block_size;
+ }
+
apif->rx_req = rx_req;
apif->tx_req = tx_req;
apif->host_if_name = host_if_name_dup;
apif->per_interface_next_index = ~0;
apif->next_tx_frame = 0;
- apif->next_rx_frame = 0;
+ apif->next_rx_block = 0;
apif->mode = arg->mode;
+ apif->hdrlen = hdrlen;
ret = af_packet_read_mtu (apif);
if (ret != 0)
diff --git a/src/vnet/devices/af_packet/af_packet.h b/src/vnet/devices/af_packet/af_packet.h
index d7d16b91c8c..ed3f10bb092 100644
--- a/src/vnet/devices/af_packet/af_packet.h
+++ b/src/vnet/devices/af_packet/af_packet.h
@@ -17,9 +17,15 @@
*------------------------------------------------------------------
*/
+#include <linux/if_packet.h>
+
#include <vppinfra/lock.h>
#include <vlib/log.h>
+typedef struct tpacket_block_desc block_desc_t;
+typedef struct tpacket_req3 tpacket_req3_t;
+typedef struct tpacket3_hdr tpacket3_hdr_t;
+
typedef enum
{
AF_PACKET_IF_MODE_ETHERNET = 1,
@@ -39,15 +45,16 @@ typedef struct
u8 *host_if_name;
int host_if_index;
int fd;
- struct tpacket_req *rx_req;
- struct tpacket_req *tx_req;
- u8 *rx_ring;
- u8 *tx_ring;
+ tpacket_req3_t *rx_req;
+ tpacket_req3_t *tx_req;
+ u8 **rx_ring;
+ u8 **tx_ring;
+ u32 hdrlen;
u32 hw_if_index;
u32 sw_if_index;
u32 clib_file_index;
- u32 next_rx_frame;
+ u32 next_rx_block;
u32 next_tx_frame;
u32 per_interface_next_index;
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c
index c8e59c3566c..23b18832cc8 100644
--- a/src/vnet/devices/af_packet/device.c
+++ b/src/vnet/devices/af_packet/device.c
@@ -83,9 +83,9 @@ format_af_packet_device (u8 * s, va_list * args)
u32 rx_frame_nr = apif->rx_req->tp_frame_nr;
u32 rx_block_nr = apif->rx_req->tp_block_nr;
int block = 0;
- u8 *tx_block_start = apif->tx_ring + block * tx_block_sz;
+ u8 *tx_block_start = apif->tx_ring[block];
u32 tx_frame = apif->next_tx_frame;
- struct tpacket2_hdr *tph;
+ tpacket3_hdr_t *tph;
s = format (s, "Linux PACKET socket interface\n");
s = format (s, "%UTX block size:%d nr:%d TX frame size:%d nr:%d\n",
@@ -100,7 +100,7 @@ format_af_packet_device (u8 * s, va_list * args)
int n_send_req = 0, n_avail = 0, n_sending = 0, n_tot = 0, n_wrong = 0;
do
{
- tph = (struct tpacket2_hdr *) (tx_block_start + tx_frame * tx_frame_sz);
+ tph = (struct tpacket3_hdr *) (tx_block_start + tx_frame * tx_frame_sz);
tx_frame = (tx_frame + 1) % tx_frame_nr;
if (tph->tp_status == 0)
n_avail++;
@@ -140,13 +140,12 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm,
af_packet_if_t *apif =
pool_elt_at_index (apm->interfaces, rd->dev_instance);
clib_spinlock_lock_if_init (&apif->lockp);
- int block = 0;
- u32 block_size = apif->tx_req->tp_block_size;
+ u32 block = 0;
u32 frame_size = apif->tx_req->tp_frame_size;
u32 frame_num = apif->tx_req->tp_frame_nr;
- u8 *block_start = apif->tx_ring + block * block_size;
+ u8 *block_start = apif->tx_ring[block];
u32 tx_frame = apif->next_tx_frame;
- struct tpacket2_hdr *tph;
+ tpacket3_hdr_t *tph;
u32 frame_not_ready = 0;
while (n_left)
@@ -158,7 +157,7 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm,
u32 bi = buffers[0];
buffers++;
- tph = (struct tpacket2_hdr *) (block_start + tx_frame * frame_size);
+ tph = (struct tpacket3_hdr *) (block_start + tx_frame * frame_size);
if (PREDICT_FALSE (tph->tp_status &
(TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
{
@@ -170,9 +169,9 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm,
{
b0 = vlib_get_buffer (vm, bi);
len = b0->current_length;
- clib_memcpy_fast ((u8 *) tph +
- TPACKET_ALIGN (sizeof (struct tpacket2_hdr)) +
- offset, vlib_buffer_get_current (b0), len);
+ clib_memcpy_fast (
+ (u8 *) tph + TPACKET_ALIGN (sizeof (struct tpacket3_hdr)) + offset,
+ vlib_buffer_get_current (b0), len);
offset += len;
}
while ((bi =
diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c
index efe701642bb..229e0501af7 100644
--- a/src/vnet/devices/af_packet/node.c
+++ b/src/vnet/devices/af_packet/node.c
@@ -51,7 +51,10 @@ typedef struct
u32 next_index;
u32 hw_if_index;
int block;
- struct tpacket2_hdr tph;
+ u32 num_pkts;
+ void *block_start;
+ block_desc_t bd;
+ tpacket3_hdr_t tph;
} af_packet_input_trace_t;
static u8 *
@@ -65,26 +68,27 @@ format_af_packet_input_trace (u8 * s, va_list * args)
s = format (s, "af_packet: hw_if_index %d next-index %d",
t->hw_if_index, t->next_index);
+ s = format (s,
+ "\n%Ublock %u:\n%Uaddress %p version %u seq_num %lu"
+ " num_pkts %u",
+ format_white_space, indent + 2, t->block, format_white_space,
+ indent + 4, t->block_start, t->bd.version, t->bd.hdr.bh1.seq_num,
+ t->num_pkts);
s =
format (s,
- "\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\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->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.tp_vlan_tci
+ 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
#ifdef TP_STATUS_VLAN_TPID_VALID
- , t->tph.tp_vlan_tpid
+ ,
+ t->tph.hv1.tp_vlan_tpid
#endif
);
return s;
@@ -193,23 +197,23 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, af_packet_if_t * apif)
{
af_packet_main_t *apm = &af_packet_main;
- struct tpacket2_hdr *tph;
+ tpacket3_hdr_t *tph;
u32 next_index;
- u32 block = 0;
- u32 rx_frame;
u32 n_free_bufs;
u32 n_rx_packets = 0;
u32 n_rx_bytes = 0;
u32 *to_next = 0;
- u32 block_size = apif->rx_req->tp_block_size;
- u32 frame_size = apif->rx_req->tp_frame_size;
- u32 frame_num = apif->rx_req->tp_frame_nr;
- u8 *block_start = apif->rx_ring + block * block_size;
+ u32 block = apif->next_rx_block;
+ u32 block_nr = apif->rx_req->tp_block_nr;
+ u8 *block_start = 0;
uword n_trace = vlib_get_trace_count (vm, node);
u32 thread_index = vm->thread_index;
u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
u32 min_bufs = apif->rx_req->tp_frame_size / n_buffer_bytes;
u32 eth_header_size = 0;
+ u32 num_pkts = 0;
+ u32 rx_frame_offset = 0;
+ block_desc_t *bd = 0;
vlib_buffer_t bt;
if (apif->mode == AF_PACKET_IF_MODE_IP)
@@ -227,170 +231,199 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt);
}
- n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
- if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE))
+ while ((((block_desc_t *) (block_start = apif->rx_ring[block]))
+ ->hdr.bh1.block_status &
+ TP_STATUS_USER) != 0)
{
- vec_validate (apm->rx_buffers[thread_index],
- VLIB_FRAME_SIZE + n_free_bufs - 1);
- n_free_bufs +=
- vlib_buffer_alloc (vm, &apm->rx_buffers[thread_index][n_free_bufs],
- VLIB_FRAME_SIZE);
- _vec_len (apm->rx_buffers[thread_index]) = n_free_bufs;
- }
+ u32 n_required = 0;
- rx_frame = apif->next_rx_frame;
- tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size);
- while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs))
- {
- vlib_buffer_t *b0 = 0, *first_b0 = 0;
- u32 next0 = next_index;
+ if (PREDICT_FALSE (num_pkts == 0))
+ {
+ bd = (block_desc_t *) block_start;
+ num_pkts = bd->hdr.bh1.num_pkts;
+ rx_frame_offset = sizeof (block_desc_t);
+ }
- u32 n_left_to_next;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs) &&
- n_left_to_next)
+ n_required = clib_max (num_pkts, VLIB_FRAME_SIZE);
+ n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
+ if (PREDICT_FALSE (n_free_bufs < n_required))
{
- u32 data_len = tph->tp_snaplen;
- u32 offset = 0;
- u32 bi0 = 0, first_bi0 = 0, prev_bi0;
- u8 l4_hdr_sz = 0;
+ vec_validate (apm->rx_buffers[thread_index],
+ n_required + n_free_bufs - 1);
+ n_free_bufs += vlib_buffer_alloc (
+ vm, &apm->rx_buffers[thread_index][n_free_bufs], n_required);
+ _vec_len (apm->rx_buffers[thread_index]) = n_free_bufs;
+ }
- while (data_len)
+ while (num_pkts && (n_free_bufs > min_bufs))
+ {
+ vlib_buffer_t *b0 = 0, *first_b0 = 0;
+ u32 next0 = next_index;
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ while (num_pkts && n_left_to_next && (n_free_bufs > min_bufs))
{
- /* grab free buffer */
- u32 last_empty_buffer =
- vec_len (apm->rx_buffers[thread_index]) - 1;
- prev_bi0 = bi0;
- bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
- b0 = vlib_get_buffer (vm, bi0);
- _vec_len (apm->rx_buffers[thread_index]) = last_empty_buffer;
- n_free_bufs--;
-
- /* copy data */
- u32 bytes_to_copy =
- data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
- u32 vlan_len = 0;
- u32 bytes_copied = 0;
- b0->current_data = 0;
- /* Kernel removes VLAN headers, so reconstruct VLAN */
- if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
+ tph = (tpacket3_hdr_t *) (block_start + rx_frame_offset);
+
+ if (num_pkts > 1)
+ CLIB_PREFETCH (block_start + rx_frame_offset +
+ tph->tp_next_offset,
+ 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ u32 data_len = tph->tp_snaplen;
+ u32 offset = 0;
+ u32 bi0 = 0, first_bi0 = 0, prev_bi0;
+ u8 l4_hdr_sz = 0;
+
+ while (data_len)
{
- if (PREDICT_TRUE (offset == 0))
+ /* grab free buffer */
+ u32 last_empty_buffer =
+ vec_len (apm->rx_buffers[thread_index]) - 1;
+ prev_bi0 = bi0;
+ bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
+ b0 = vlib_get_buffer (vm, bi0);
+ _vec_len (apm->rx_buffers[thread_index]) = last_empty_buffer;
+ n_free_bufs--;
+
+ /* copy data */
+ u32 bytes_to_copy =
+ data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
+ u32 vlan_len = 0;
+ u32 bytes_copied = 0;
+ b0->current_data = 0;
+ /* Kernel removes VLAN headers, so reconstruct VLAN */
+ if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
{
- clib_memcpy_fast (vlib_buffer_get_current (b0),
- (u8 *) tph + tph->tp_mac,
- sizeof (ethernet_header_t));
- ethernet_header_t *eth = vlib_buffer_get_current (b0);
- ethernet_vlan_header_t *vlan =
- (ethernet_vlan_header_t *) (eth + 1);
- vlan->priority_cfi_and_id =
- clib_host_to_net_u16 (tph->tp_vlan_tci);
- vlan->type = eth->type;
- eth->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
- vlan_len = sizeof (ethernet_vlan_header_t);
- bytes_copied = sizeof (ethernet_header_t);
+ if (PREDICT_TRUE (offset == 0))
+ {
+ clib_memcpy_fast (vlib_buffer_get_current (b0),
+ (u8 *) tph + tph->tp_mac,
+ sizeof (ethernet_header_t));
+ ethernet_header_t *eth =
+ vlib_buffer_get_current (b0);
+ ethernet_vlan_header_t *vlan =
+ (ethernet_vlan_header_t *) (eth + 1);
+ vlan->priority_cfi_and_id =
+ clib_host_to_net_u16 (tph->hv1.tp_vlan_tci);
+ vlan->type = eth->type;
+ eth->type =
+ clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
+ vlan_len = sizeof (ethernet_vlan_header_t);
+ bytes_copied = sizeof (ethernet_header_t);
+ }
}
- }
- clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
- bytes_copied + vlan_len,
- (u8 *) tph + tph->tp_mac + offset +
- bytes_copied, (bytes_to_copy - bytes_copied));
+ clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
+ bytes_copied + vlan_len,
+ (u8 *) tph + tph->tp_mac + offset +
+ bytes_copied,
+ (bytes_to_copy - bytes_copied));
+
+ /* fill buffer header */
+ b0->current_length = bytes_to_copy + vlan_len;
- /* fill buffer header */
- b0->current_length = bytes_to_copy + vlan_len;
+ if (offset == 0)
+ {
+ b0->total_length_not_including_first_buffer = 0;
+ b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] =
+ apif->sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0;
+ first_bi0 = bi0;
+ first_b0 = vlib_get_buffer (vm, first_bi0);
+ if (tph->tp_status & TP_STATUS_CSUMNOTREADY)
+ mark_tcp_udp_cksum_calc (first_b0, &l4_hdr_sz);
+ /* This is a trade-off for GSO. As kernel isn't passing
+ * us the GSO state or size, we guess it by comparing it
+ * to the host MTU of the interface */
+ if (tph->tp_snaplen > (apif->host_mtu + eth_header_size))
+ fill_gso_buffer_flags (first_b0, apif->host_mtu,
+ l4_hdr_sz);
+ }
+ else
+ buffer_add_to_chain (vm, bi0, first_bi0, prev_bi0);
- if (offset == 0)
+ offset += bytes_to_copy;
+ data_len -= bytes_to_copy;
+ }
+ n_rx_packets++;
+ n_rx_bytes += tph->tp_snaplen;
+ to_next[0] = first_bi0;
+ to_next += 1;
+ n_left_to_next--;
+
+ /* drop partial packets */
+ if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
{
- b0->total_length_not_including_first_buffer = 0;
- b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
- vnet_buffer (b0)->sw_if_index[VLIB_RX] = apif->sw_if_index;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- first_bi0 = bi0;
- first_b0 = vlib_get_buffer (vm, first_bi0);
- if (tph->tp_status & TP_STATUS_CSUMNOTREADY)
- mark_tcp_udp_cksum_calc (first_b0, &l4_hdr_sz);
- /* This is a trade-off for GSO. As kernel isn't passing
- * us the GSO state or size, we guess it by comparing it
- * to the host MTU of the interface */
- if (tph->tp_snaplen > (apif->host_mtu + eth_header_size))
- fill_gso_buffer_flags (first_b0, apif->host_mtu,
- l4_hdr_sz);
+ next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+ first_b0->error =
+ node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
}
else
- buffer_add_to_chain (vm, bi0, first_bi0, prev_bi0);
-
- offset += bytes_to_copy;
- data_len -= bytes_to_copy;
- }
- n_rx_packets++;
- n_rx_bytes += tph->tp_snaplen;
- to_next[0] = first_bi0;
- to_next += 1;
- n_left_to_next--;
-
- /* drop partial packets */
- if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
- {
- next0 = VNET_DEVICE_INPUT_NEXT_DROP;
- first_b0->error =
- node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
- }
- else
- {
- if (PREDICT_FALSE (apif->mode == AF_PACKET_IF_MODE_IP))
{
- switch (first_b0->data[0] & 0xf0)
+ if (PREDICT_FALSE (apif->mode == AF_PACKET_IF_MODE_IP))
{
- case 0x40:
- next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
- break;
- case 0x60:
- next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
- break;
- default:
- next0 = VNET_DEVICE_INPUT_NEXT_DROP;
- break;
+ switch (first_b0->data[0] & 0xf0)
+ {
+ case 0x40:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+ break;
+ case 0x60:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
+ break;
+ default:
+ next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+ break;
+ }
+ if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
+ next0 = apif->per_interface_next_index;
+ }
+ else
+ {
+ /* copy feature arc data from template */
+ first_b0->current_config_index = bt.current_config_index;
+ vnet_buffer (first_b0)->feature_arc_index =
+ vnet_buffer (&bt)->feature_arc_index;
}
- if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
- next0 = apif->per_interface_next_index;
}
- else
+
+ /* trace */
+ if (PREDICT_FALSE (n_trace > 0 &&
+ vlib_trace_buffer (vm, node, next0, first_b0,
+ /* follow_chain */ 0)))
{
- /* copy feature arc data from template */
- first_b0->current_config_index = bt.current_config_index;
- vnet_buffer (first_b0)->feature_arc_index =
- vnet_buffer (&bt)->feature_arc_index;
+ af_packet_input_trace_t *tr;
+ vlib_set_trace_count (vm, node, --n_trace);
+ tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
+ tr->next_index = next0;
+ tr->hw_if_index = apif->hw_if_index;
+ tr->block = block;
+ tr->block_start = bd;
+ tr->num_pkts = num_pkts;
+ clib_memcpy_fast (&tr->bd, bd, sizeof (block_desc_t));
+ clib_memcpy_fast (&tr->tph, tph, sizeof (tpacket3_hdr_t));
}
- }
- /* trace */
- if (PREDICT_FALSE
- (n_trace > 0 && vlib_trace_buffer (vm, node, next0, first_b0,
- /* follow_chain */ 0)))
- {
- af_packet_input_trace_t *tr;
- vlib_set_trace_count (vm, node, --n_trace);
- tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
- tr->next_index = next0;
- tr->hw_if_index = apif->hw_if_index;
- clib_memcpy_fast (&tr->tph, tph, sizeof (struct tpacket2_hdr));
- }
+ /* enque and take next packet */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, first_bi0,
+ next0);
- /* enque and take next packet */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, first_bi0, next0);
+ /* next packet */
+ num_pkts--;
+ rx_frame_offset += tph->tp_next_offset;
+ }
- /* next packet */
- tph->tp_status = TP_STATUS_KERNEL;
- rx_frame = (rx_frame + 1) % frame_num;
- tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size);
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ if (PREDICT_TRUE (num_pkts == 0))
+ {
+ bd->hdr.bh1.block_status = TP_STATUS_KERNEL;
+ block = (block + 1) % block_nr;
+ }
}
- apif->next_rx_frame = rx_frame;
-
+ apif->next_rx_block = block;
vlib_increment_combined_counter
(vnet_get_main ()->interface_main.combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_RX,