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-rw-r--r--src/vnet/devices/af_packet/af_packet.c60
-rw-r--r--src/vnet/devices/af_packet/af_packet.h2
-rw-r--r--src/vnet/devices/af_packet/device.c2
3 files changed, 37 insertions, 27 deletions
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
index fd2f6fc9a57..10b0ff2fb1a 100644
--- a/src/vnet/devices/af_packet/af_packet.c
+++ b/src/vnet/devices/af_packet/af_packet.c
@@ -191,8 +191,7 @@ af_packet_set_tx_queues (vlib_main_t *vm, af_packet_if_t *apif)
static int
create_packet_v3_sock (int host_if_index, tpacket_req3_t *rx_req,
tpacket_req3_t *tx_req, int *fd, af_packet_ring_t *ring,
- u32 fanout_id, u8 is_fanout,
- af_packet_if_flags_t *flags)
+ u32 fanout_id, af_packet_if_flags_t *flags)
{
af_packet_main_t *apm = &af_packet_main;
struct sockaddr_ll sll;
@@ -281,30 +280,34 @@ create_packet_v3_sock (int host_if_index, tpacket_req3_t *rx_req,
}
#endif
- if (is_fanout)
+ if (rx_req)
{
- int fanout = ((fanout_id & 0xffff) | ((PACKET_FANOUT_HASH) << 16));
- if (setsockopt (*fd, SOL_PACKET, PACKET_FANOUT, &fanout,
- sizeof (fanout)) < 0)
+ if (*flags & AF_PACKET_IF_FLAGS_FANOUT)
+ {
+ int fanout = ((fanout_id & 0xffff) | ((PACKET_FANOUT_HASH) << 16));
+ if (setsockopt (*fd, SOL_PACKET, PACKET_FANOUT, &fanout,
+ sizeof (fanout)) < 0)
+ {
+ // remove the flag
+ *flags &= ~AF_PACKET_IF_FLAGS_FANOUT;
+ vlib_log_err (apm->log_class,
+ "Failed to set fanout options: %s (errno %d)",
+ strerror (errno), errno);
+ ret = VNET_API_ERROR_SYSCALL_ERROR_1;
+ goto error;
+ }
+ }
+
+ if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0)
{
vlib_log_err (apm->log_class,
- "Failed to set fanout options: %s (errno %d)",
+ "Failed to set packet rx ring options: %s (errno %d)",
strerror (errno), errno);
ret = VNET_API_ERROR_SYSCALL_ERROR_1;
goto error;
}
}
- if (rx_req)
- if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0)
- {
- vlib_log_err (apm->log_class,
- "Failed to set packet rx ring options: %s (errno %d)",
- strerror (errno), errno);
- ret = VNET_API_ERROR_SYSCALL_ERROR_1;
- goto error;
- }
-
if (tx_req)
if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0)
{
@@ -341,7 +344,7 @@ int
af_packet_queue_init (vlib_main_t *vm, af_packet_if_t *apif,
af_packet_create_if_arg_t *arg,
af_packet_queue_t *rx_queue, af_packet_queue_t *tx_queue,
- u8 queue_id, u8 is_fanout)
+ u8 queue_id)
{
af_packet_main_t *apm = &af_packet_main;
tpacket_req3_t *rx_req = 0;
@@ -395,9 +398,8 @@ af_packet_queue_init (vlib_main_t *vm, af_packet_if_t *apif,
if (rx_queue || tx_queue)
{
- ret =
- create_packet_v3_sock (apif->host_if_index, rx_req, tx_req, &fd, &ring,
- apif->dev_instance, is_fanout, &arg->flags);
+ ret = create_packet_v3_sock (apif->host_if_index, rx_req, tx_req, &fd,
+ &ring, apif->dev_instance, &arg->flags);
if (ret != 0)
goto error;
@@ -458,7 +460,10 @@ af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
u16 nq = clib_min (args->num_rxqs, args->num_txqs);
u16 i = 0;
int ret = 0;
- u8 is_fanout = (args->num_rxqs > 1) ? 1 : 0;
+
+ // enable fanout feature for multi-rxqs
+ if (args->num_rxqs > 1)
+ args->flags |= AF_PACKET_IF_FLAGS_FANOUT;
vec_validate (apif->rx_queues, args->num_rxqs - 1);
vec_validate (apif->tx_queues, args->num_txqs - 1);
@@ -467,8 +472,7 @@ af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
{
rx_queue = vec_elt_at_index (apif->rx_queues, i);
tx_queue = vec_elt_at_index (apif->tx_queues, i);
- ret = af_packet_queue_init (vm, apif, args, rx_queue, tx_queue, i,
- is_fanout);
+ ret = af_packet_queue_init (vm, apif, args, rx_queue, tx_queue, i);
if (ret != 0)
goto error;
}
@@ -478,8 +482,7 @@ af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
for (; i < args->num_rxqs; i++)
{
rx_queue = vec_elt_at_index (apif->rx_queues, i);
- ret =
- af_packet_queue_init (vm, apif, args, rx_queue, 0, i, is_fanout);
+ ret = af_packet_queue_init (vm, apif, args, rx_queue, 0, i);
if (ret != 0)
goto error;
}
@@ -489,7 +492,7 @@ af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
for (; i < args->num_txqs; i++)
{
tx_queue = vec_elt_at_index (apif->tx_queues, i);
- ret = af_packet_queue_init (vm, apif, args, 0, tx_queue, i, 0);
+ ret = af_packet_queue_init (vm, apif, args, 0, tx_queue, i);
if (ret != 0)
goto error;
}
@@ -646,6 +649,9 @@ af_packet_create_if (af_packet_create_if_arg_t *arg)
af_packet_set_rx_queues (vm, apif);
af_packet_set_tx_queues (vm, apif);
+ if (arg->flags & AF_PACKET_IF_FLAGS_FANOUT)
+ apif->is_fanout_enabled = 1;
+
apif->is_qdisc_bypass_enabled =
(arg->flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS);
diff --git a/src/vnet/devices/af_packet/af_packet.h b/src/vnet/devices/af_packet/af_packet.h
index 64daaa197eb..10a7aafda56 100644
--- a/src/vnet/devices/af_packet/af_packet.h
+++ b/src/vnet/devices/af_packet/af_packet.h
@@ -36,6 +36,7 @@ typedef enum
{
AF_PACKET_IF_FLAGS_QDISC_BYPASS = 1,
AF_PACKET_IF_FLAGS_CKSUM_GSO = 2,
+ AF_PACKET_IF_FLAGS_FANOUT = 4,
} af_packet_if_flags_t;
typedef struct
@@ -108,6 +109,7 @@ typedef struct
af_packet_ring_t *rings;
u8 is_qdisc_bypass_enabled;
+ u8 is_fanout_enabled;
} af_packet_if_t;
typedef struct
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c
index 4e4913a071a..1e177f625b2 100644
--- a/src/vnet/devices/af_packet/device.c
+++ b/src/vnet/devices/af_packet/device.c
@@ -97,6 +97,8 @@ format_af_packet_device (u8 * s, va_list * args)
s = format (s, "\n%Uqdisc-bpass-enabled", format_white_space, indent + 2);
if (apif->is_cksum_gso_enabled)
s = format (s, "\n%Ucksum-gso-enabled", format_white_space, indent + 2);
+ if (apif->is_fanout_enabled)
+ s = format (s, "\n%Ufanout-enabled", format_white_space, indent + 2);
vec_foreach (rx_queue, apif->rx_queues)
{