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net/nfp: cancel delayed LSC work in port close

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The link state change interrupt handler of the NFP PMD will delay the
actual LSC work for a short period to ensure the link is stable. If the
link of the port changes state and the port is closed immediately after
the link event then a segmentation fault will occur. This happens
because the delayed LSC work eventually triggers and this logic will try
to access private port data that had been released when the port was
closed.

Fixes: 6c53f87b34 ("nfp: add link status interrupt")
Cc: stable@dpdk.org

Signed-off-by: Heinrich Kuhn <heinrich.kuhn@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
This commit is contained in:
Heinrich Kuhn 2021-10-06 08:44:55 +02:00 committed by Ferruh Yigit
parent 7483341ae5
commit 851f03e1ea
4 changed files with 13 additions and 1 deletions
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2
drivers/net/nfp/nfp_common.c
View File

@ -898,7 +898,7 @@ nfp_net_irq_unmask(struct rte_eth_dev *dev)
*
* @return void
*/
static void
void
nfp_net_dev_interrupt_delayed_handler(void *param)
{
struct rte_eth_dev *dev = (struct rte_eth_dev *)param;

1
drivers/net/nfp/nfp_common.h
View File

@ -376,6 +376,7 @@ void nfp_net_params_setup(struct nfp_net_hw *hw);
void nfp_net_cfg_queue_setup(struct nfp_net_hw *hw);
void nfp_eth_copy_mac(uint8_t *dst, const uint8_t *src);
void nfp_net_dev_interrupt_handler(void *param);
void nfp_net_dev_interrupt_delayed_handler(void *param);
int nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
int nfp_net_vlan_offload_set(struct rte_eth_dev *dev, int mask);
int nfp_net_reta_update(struct rte_eth_dev *dev,

5
drivers/net/nfp/nfp_ethdev.c
View File

@ -22,6 +22,7 @@
#include <rte_memzone.h>
#include <rte_mempool.h>
#include <rte_service_component.h>
#include <rte_alarm.h>
#include "eal_firmware.h"
#include "nfpcore/nfp_cpp.h"
@ -307,6 +308,10 @@ nfp_net_close(struct rte_eth_dev *dev)
nfp_net_reset_rx_queue(this_rx_q);
}
/* Cancel possible impending LSC work here before releasing the port*/
rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler,
(void *)dev);
/* Only free PF resources after all physical ports have been closed */
/* Mark this port as unused and free device priv resources*/
nn_cfg_writeb(hw, NFP_NET_CFG_LSC, 0xff);

6
drivers/net/nfp/nfp_ethdev_vf.c
View File

@ -13,6 +13,8 @@
* Netronome vNIC VF DPDK Poll-Mode Driver: Main entry point
*/
#include <rte_alarm.h>
#include "nfpcore/nfp_mip.h"
#include "nfpcore/nfp_rtsym.h"
@ -230,6 +232,10 @@ nfp_netvf_close(struct rte_eth_dev *dev)
nfp_net_dev_interrupt_handler,
(void *)dev);
/* Cancel possible impending LSC work here before releasing the port*/
rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler,
(void *)dev);
/*
* The ixgbe PMD driver disables the pcie master on the
* device. The i40e does not...