diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2020-05-13 14:48:01 +0200 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2020-08-18 19:47:21 +0000 |
| commit | d8c4326aaeb16c3faf4276d6b858834b0939f0c5 (patch) | |
| tree | 9773a393e878e308671eb3d7ca5fdfebb15746ad /src/plugins/dpdk/device | |
| parent | 8563b52376109608574fa0906082f76a0b973e50 (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>
(cherry picked from commit 31eb471d0cb0105ab74ee637028f4ab3cc00cf2a)
Diffstat (limited to 'src/plugins/dpdk/device')
| -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 8ebfaac3580..0523770971c 100644 --- a/src/plugins/dpdk/device/init.c +++ b/src/plugins/dpdk/device/init.c @@ -279,7 +279,6 @@ 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; @@ -288,7 +287,6 @@ 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) @@ -504,9 +502,13 @@ 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 */ @@ -551,7 +553,11 @@ 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: |