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-rw-r--r--src/plugins/dpdk/device/common.c63
-rw-r--r--src/plugins/dpdk/device/dpdk.h7
-rw-r--r--src/plugins/dpdk/device/format.c4
-rw-r--r--src/plugins/dpdk/device/init.c26
4 files changed, 65 insertions, 35 deletions
diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
index 3eca847de79..0f54a616773 100644
--- a/src/plugins/dpdk/device/common.c
+++ b/src/plugins/dpdk/device/common.c
@@ -61,6 +61,7 @@ dpdk_device_setup (dpdk_device_t * xd)
vlib_thread_main_t *tm = vlib_get_thread_main ();
vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, xd->sw_if_index);
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
+ u16 buf_sz = vlib_buffer_get_default_data_size (vm);
vnet_hw_if_caps_change_t caps = {};
struct rte_eth_dev_info dev_info;
struct rte_eth_conf conf = {};
@@ -161,49 +162,51 @@ dpdk_device_setup (dpdk_device_t * xd)
#if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
if (rxo & DEV_RX_OFFLOAD_JUMBO_FRAME)
- conf.rxmode.max_rx_pkt_len =
- clib_min (ETHERNET_MAX_PACKET_BYTES, dev_info.max_rx_pktlen);
+ {
+ conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
+ xd->max_supported_frame_size = dev_info.max_rx_pktlen;
+ mtu = xd->max_supported_frame_size - xd->driver_frame_overhead;
+ }
+ else
+ {
+ mtu = 1500;
+ xd->max_supported_frame_size = mtu + xd->driver_frame_overhead;
+ }
#else
- dpdk_log_debug ("[%u] min_mtu: %u, max_mtu: %u, min_rx_bufsize: %u, "
- "max_rx_pktlen: %u, max_lro_pkt_size: %u",
- xd->port_id, dev_info.min_mtu, dev_info.max_mtu,
- dev_info.min_rx_bufsize, dev_info.max_rx_pktlen,
- dev_info.max_lro_pkt_size);
-
- mtu = xd->conf.disable_multi_seg ? 2000 : ETHERNET_MAX_PACKET_BYTES;
- conf.rxmode.mtu = clib_min (mtu, dev_info.max_rx_pktlen);
+ if (xd->conf.disable_multi_seg)
+ xd->max_supported_frame_size = clib_min (dev_info.max_rx_pktlen, buf_sz);
+ else
+ xd->max_supported_frame_size = dev_info.max_rx_pktlen;
+#endif
+
+ mtu = clib_min (xd->max_supported_frame_size - xd->driver_frame_overhead,
+ ethernet_main.default_mtu);
+ mtu = mtu + hi->frame_overhead - xd->driver_frame_overhead;
+
+#if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
+ conf.rxmode.mtu = mtu;
#endif
retry:
rv = rte_eth_dev_configure (xd->port_id, xd->conf.n_rx_queues,
xd->conf.n_tx_queues, &conf);
-
if (rv < 0 && conf.intr_conf.rxq)
{
conf.intr_conf.rxq = 0;
goto retry;
}
- if (rv < 0)
- {
- dpdk_device_error (xd, "rte_eth_dev_configure", rv);
- goto error;
- }
-
- rte_eth_dev_get_mtu (xd->port_id, &mtu);
- dpdk_log_debug ("[%u] device default mtu %u", xd->port_id, mtu);
+#if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
+ rte_eth_dev_set_mtu (xd->port_id, mtu);
+#endif
- 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);
- }
+ hi->max_frame_size = 0;
+ vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index,
+ mtu + hi->frame_overhead);
+ dpdk_log_debug ("[%u] mtu %u max_frame_size %u max max_frame_size %u "
+ "driver_frame_overhead %u",
+ xd->port_id, mtu, hi->max_frame_size,
+ xd->max_supported_frame_size, xd->driver_frame_overhead);
vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
CLIB_CACHE_LINE_BYTES);
diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index f1cd17da1cd..196f68f9756 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -200,6 +200,13 @@ typedef struct
/* mac address */
u8 *default_mac_address;
+ /* maximum supported max frame size */
+ u16 max_supported_frame_size;
+
+ /* due to lack of API to get ethernet max_frame_size we store information
+ * deducted from device info */
+ u8 driver_frame_overhead;
+
/* error string */
clib_error_t *errors;
dpdk_port_conf_t conf;
diff --git a/src/plugins/dpdk/device/format.c b/src/plugins/dpdk/device/format.c
index 4a4b4110b9f..4ef22729532 100644
--- a/src/plugins/dpdk/device/format.c
+++ b/src/plugins/dpdk/device/format.c
@@ -199,8 +199,8 @@ format_dpdk_link_status (u8 * s, va_list * args)
s = format (s, "%s duplex ", (l->link_duplex == ETH_LINK_FULL_DUPLEX) ?
"full" : "half");
- s = format (s, "mtu %d %s\n", hi->max_packet_bytes, promisc ?
- " promisc" : "");
+ s = format (s, "max-frame-size %d %s\n", hi->max_frame_size,
+ promisc ? " promisc" : "");
}
else
s = format (s, "\n");
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index 4faf6290dba..096b8d382fe 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -70,11 +70,15 @@ const struct
};
static clib_error_t *
-dpdk_set_mtu (vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 mtu)
+dpdk_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
+ u32 frame_size)
{
dpdk_main_t *dm = &dpdk_main;
dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
int rv;
+ u32 mtu;
+
+ mtu = frame_size - xd->driver_frame_overhead;
rv = rte_eth_dev_set_mtu (xd->port_id, mtu);
@@ -99,7 +103,8 @@ dpdk_set_mtu (vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 mtu)
}
}
else
- dpdk_log_debug ("[%u] mtu set to %u", xd->port_id, mtu);
+ dpdk_log_debug ("[%u] max_frame_size set to %u by setting MTU to %u",
+ xd->port_id, frame_size, mtu);
return 0;
}
@@ -376,6 +381,21 @@ dpdk_lib_init (dpdk_main_t * dm)
xd->conf.rss_hf &= di.flow_type_rss_offloads;
}
+ xd->driver_frame_overhead =
+ RTE_ETHER_HDR_LEN + 2 * RTE_VLAN_HLEN + RTE_ETHER_CRC_LEN;
+#if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
+ q = di.max_rx_pktlen - di.max_mtu;
+
+ if (q < xd->driver_frame_overhead && q > 0)
+ xd->driver_frame_overhead = q;
+ dpdk_log_debug ("[%u] min_mtu: %u, max_mtu: %u, min_rx_bufsize: %u, "
+ "max_rx_pktlen: %u, max_lro_pkt_size: %u",
+ xd->port_id, di.min_mtu, di.max_mtu, di.min_rx_bufsize,
+ di.max_rx_pktlen, di.max_lro_pkt_size);
+#endif
+ dpdk_log_debug ("[%u] driver frame overhead is %u", port_id,
+ xd->driver_frame_overhead);
+
/* number of RX and TX tescriptors */
if (devconf->num_rx_desc)
xd->conf.n_rx_desc = devconf->num_rx_desc;
@@ -397,7 +417,7 @@ dpdk_lib_init (dpdk_main_t * dm)
eir.dev_instance = xd->device_index;
eir.address = addr;
eir.cb.flag_change = dpdk_flag_change;
- eir.cb.set_mtu = dpdk_set_mtu;
+ eir.cb.set_max_frame_size = dpdk_set_max_frame_size;
xd->hw_if_index = vnet_eth_register_interface (vnm, &eir);
hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
hi->numa_node = xd->cpu_socket = (i8) rte_eth_dev_socket_id (port_id);