diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2020-05-13 14:48:01 +0200 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2020-05-14 12:25:27 +0000 |
| commit | 31eb471d0cb0105ab74ee637028f4ab3cc00cf2a (patch) | |
| tree | e0420f75015dc67db42dc14ca2c8d1620ecb13e6 /src/plugins/dpdk/device/init.c | |
| parent | 3f0579e8df831d42745e0b97191eb5e4bcffb011 (diff) | |
dpdk: fix crash with chelsio pmd
cxgbe PMD initializes its control channel as part of dev_configure(),
and trying to get link status prior to it will lead to a crash.
DPDK documentation loosely hints that we should not call any device
function before dev_start(), call link_state() only for the relevant
PMDs.
From DPDK API documentation:
The functions exported by the application Ethernet API to setup a device
designated by its port identifier must be invoked in the following
order:
rte_eth_dev_configure()
rte_eth_tx_queue_setup()
rte_eth_rx_queue_setup()
rte_eth_dev_start()
Then, the network application can invoke, in any order, the functions
exported by the Ethernet API to get the MAC address of a given device,
to get the speed and the status of a device physical link, to
receive/transmit [burst of] packets, and so on.
Type: fix
Change-Id: I12d2ab4d84e6bd72a9f695447e86f3222929c804
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/plugins/dpdk/device/init.c')
| -rw-r--r-- | src/plugins/dpdk/device/init.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c index ae50b7aa253..0b80f5d4906 100644 --- a/src/plugins/dpdk/device/init.c +++ b/src/plugins/dpdk/device/init.c @@ -259,7 +259,6 @@ dpdk_lib_init (dpdk_main_t * dm) int vlan_off; struct rte_eth_dev_info dev_info; struct rte_pci_device *pci_dev; - struct rte_eth_link l; dpdk_portid_t next_port_id; dpdk_device_config_t *devconf = 0; vlib_pci_addr_t pci_addr; @@ -268,7 +267,6 @@ dpdk_lib_init (dpdk_main_t * dm) if (!rte_eth_dev_is_valid_port(i)) continue; - rte_eth_link_get_nowait (i, &l); rte_eth_dev_info_get (i, &dev_info); if (dev_info.device == 0) @@ -519,9 +517,13 @@ dpdk_lib_init (dpdk_main_t * dm) /* Cisco VIC */ case VNET_DPDK_PMD_ENIC: - xd->port_type = port_type_from_link_speed (l.link_speed); - if (dm->conf->enable_tcp_udp_checksum) - dpdk_enable_l4_csum_offload (xd); + { + struct rte_eth_link l; + rte_eth_link_get_nowait (i, &l); + xd->port_type = port_type_from_link_speed (l.link_speed); + if (dm->conf->enable_tcp_udp_checksum) + dpdk_enable_l4_csum_offload (xd); + } break; /* Intel Red Rock Canyon */ @@ -566,7 +568,11 @@ dpdk_lib_init (dpdk_main_t * dm) break; case VNET_DPDK_PMD_NETVSC: - xd->port_type = port_type_from_link_speed (l.link_speed); + { + struct rte_eth_link l; + rte_eth_link_get_nowait (i, &l); + xd->port_type = port_type_from_link_speed (l.link_speed); + } break; default: |