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-rw-r--r--src/plugins/dpdk/device/common.c23
-rw-r--r--src/plugins/dpdk/device/dpdk.h2
-rw-r--r--src/plugins/dpdk/device/init.c105
3 files changed, 31 insertions, 99 deletions
diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
index f77e377e14c..c32382a55c6 100644
--- a/src/plugins/dpdk/device/common.c
+++ b/src/plugins/dpdk/device/common.c
@@ -48,6 +48,7 @@ dpdk_device_setup (dpdk_device_t * xd)
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
struct rte_eth_dev_info dev_info;
u64 bitmap;
+ u16 mtu;
int rv;
int j;
@@ -89,6 +90,12 @@ dpdk_device_setup (dpdk_device_t * xd)
xd->port_conf.rxmode.offloads ^= bitmap;
}
+ if (xd->port_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
+ xd->port_conf.rxmode.max_rx_pkt_len =
+ clib_min (ETHERNET_MAX_PACKET_BYTES, dev_info.max_rx_pktlen);
+ else
+ xd->port_conf.rxmode.max_rx_pkt_len = 0;
+
rv = rte_eth_dev_configure (xd->port_id, xd->conf.n_rx_queues,
xd->conf.n_tx_queues, &xd->port_conf);
@@ -98,6 +105,21 @@ dpdk_device_setup (dpdk_device_t * xd)
goto error;
}
+ rte_eth_dev_get_mtu (xd->port_id, &mtu);
+ dpdk_log_debug ("[%u] device default mtu %u", xd->port_id, mtu);
+
+ hi->max_supported_packet_bytes = mtu;
+ if (hi->max_packet_bytes > mtu)
+ {
+ vnet_hw_interface_set_mtu (vnm, xd->hw_if_index, mtu);
+ }
+ else
+ {
+ rte_eth_dev_set_mtu (xd->port_id, hi->max_packet_bytes);
+ dpdk_log_debug ("[%u] port mtu set to %u", xd->port_id,
+ hi->max_packet_bytes);
+ }
+
vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
CLIB_CACHE_LINE_BYTES);
for (j = 0; j < xd->conf.n_tx_queues; j++)
@@ -144,7 +166,6 @@ dpdk_device_setup (dpdk_device_t * xd)
if (vec_len (xd->errors))
goto error;
- rte_eth_dev_set_mtu (xd->port_id, hi->max_packet_bytes);
xd->buffer_flags =
(VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_EXT_HDR_VALID);
diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index 3026734c39f..ff2bf6f9c50 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -420,6 +420,8 @@ typedef enum
vlib_log(VLIB_LOG_LEVEL_NOTICE, dpdk_main.log_default, __VA_ARGS__)
#define dpdk_log_info(...) \
vlib_log(VLIB_LOG_LEVEL_INFO, dpdk_main.log_default, __VA_ARGS__)
+#define dpdk_log_debug(...) \
+ vlib_log (VLIB_LOG_LEVEL_DEBUG, dpdk_main.log_default, __VA_ARGS__)
void dpdk_update_link_state (dpdk_device_t * xd, f64 now);
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index 1ee03323d61..fd1c9115954 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -97,8 +97,13 @@ dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
xd->flags |= DPDK_DEVICE_FLAG_PROMISC;
break;
case ETHERNET_INTERFACE_FLAG_MTU:
- xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
- dpdk_device_setup (xd);
+ if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
+ rte_eth_dev_stop (xd->port_id);
+ rte_eth_dev_set_mtu (xd->port_id, hi->max_packet_bytes);
+ if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
+ rte_eth_dev_start (xd->port_id);
+ dpdk_log_debug ("[%u] mtu changed to %u", xd->port_id,
+ hi->max_packet_bytes);
return 0;
default:
return ~0;
@@ -115,12 +120,6 @@ dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
return old;
}
-static int
-dpdk_port_crc_strip_enabled (dpdk_device_t * xd)
-{
- return !(xd->port_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC);
-}
-
/* The function check_l3cache helps check if Level 3 cache exists or not on current CPUs
return value 1: exist.
return value 0: not exist.
@@ -176,7 +175,6 @@ dpdk_lib_init (dpdk_main_t * dm)
{
vnet_main_t *vnm = vnet_get_main ();
u32 nports;
- u32 mtu, max_rx_frame;
u16 port_id;
clib_error_t *error;
vlib_main_t *vm = vlib_get_main ();
@@ -652,80 +650,6 @@ dpdk_lib_init (dpdk_main_t * dm)
if (error)
return error;
- /*
- * Ensure default mtu is not > the mtu read from the hardware.
- * Otherwise rte_eth_dev_configure() will fail and the port will
- * not be available.
- * Calculate max_frame_size and mtu supported by NIC
- */
- if (ETHERNET_MAX_PACKET_BYTES > di.max_rx_pktlen)
- {
- /*
- * This device does not support the platforms's max frame
- * size. Use it's advertised mru instead.
- */
- max_rx_frame = di.max_rx_pktlen;
- mtu = di.max_rx_pktlen - sizeof (ethernet_header_t);
- }
- else
- {
- /* VPP treats MTU and max_rx_pktlen both equal to
- * ETHERNET_MAX_PACKET_BYTES, if dev_info.max_rx_pktlen >=
- * ETHERNET_MAX_PACKET_BYTES + sizeof(ethernet_header_t)
- */
- if (di.max_rx_pktlen >=
- (ETHERNET_MAX_PACKET_BYTES + sizeof (ethernet_header_t)))
- {
- mtu = ETHERNET_MAX_PACKET_BYTES;
- max_rx_frame = ETHERNET_MAX_PACKET_BYTES;
-
- /*
- * Some platforms do not account for Ethernet FCS (4 bytes) in
- * MTU calculations. To interop with them increase mru but only
- * if the device's settings can support it.
- */
- if (dpdk_port_crc_strip_enabled (xd) &&
- (di.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES +
- sizeof (ethernet_header_t) + 4)))
- {
- max_rx_frame += 4;
- }
- }
- else
- {
- max_rx_frame = ETHERNET_MAX_PACKET_BYTES;
- mtu = ETHERNET_MAX_PACKET_BYTES - sizeof (ethernet_header_t);
-
- if (dpdk_port_crc_strip_enabled (xd) &&
- (di.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES + 4)))
- {
- max_rx_frame += 4;
- }
- }
- }
-
- if (xd->pmd == VNET_DPDK_PMD_FAILSAFE)
- {
- /* failsafe device numerables are reported with active device only,
- * need to query the mtu for current device setup to overwrite
- * reported value.
- */
- uint16_t dev_mtu;
- if (!rte_eth_dev_get_mtu (port_id, &dev_mtu))
- {
- mtu = dev_mtu;
- max_rx_frame = mtu + sizeof (ethernet_header_t);
-
- if (dpdk_port_crc_strip_enabled (xd))
- {
- max_rx_frame += 4;
- }
- }
- }
-
- /*Set port rxmode config */
- xd->port_conf.rxmode.max_rx_pkt_len = max_rx_frame;
-
sw = vnet_get_hw_sw_interface (vnm, xd->hw_if_index);
xd->sw_if_index = sw->sw_if_index;
vnet_hw_if_set_input_node (vnm, xd->hw_if_index, dpdk_input_node.index);
@@ -754,12 +678,8 @@ dpdk_lib_init (dpdk_main_t * dm)
/*Get vnet hardware interface */
hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
- /*Override default max_packet_bytes and max_supported_bytes set in
- * ethernet_register_interface() above*/
if (hi)
{
- hi->max_packet_bytes = mtu;
- hi->max_supported_packet_bytes = max_rx_frame;
hi->numa_node = xd->cpu_socket;
/* Indicate ability to support L3 DMAC filtering and
@@ -819,17 +739,6 @@ dpdk_lib_init (dpdk_main_t * dm)
dpdk_log_err ("setup failed for device %U. Errors:\n %U",
format_dpdk_device_name, port_id,
format_dpdk_device_errors, xd);
-
- if (hi)
- hi->max_packet_bytes =
- xd->port_conf.rxmode.max_rx_pkt_len - sizeof (ethernet_header_t);
- else
- dpdk_log_warn ("hi NULL");
-
- if (xd->conf.no_multi_seg)
- mtu = mtu > ETHER_MAX_LEN ? ETHER_MAX_LEN : mtu;
-
- rte_eth_dev_set_mtu (xd->port_id, mtu);
}
return 0;