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nfp: checking parameter process for rx-usecs/tx-usecs is invalid

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[ Upstream commit 3bd6b2a838ba6a3b86d41b077f570b1b61174def ]

Use nn->tlv_caps.me_freq_mhz instead of nn->me_freq_mhz to check whether
rx-usecs/tx-usecs is valid.

This is because nn->tlv_caps.me_freq_mhz represents the clock_freq (MHz) of
the flow processing cores (FPC) on the NIC. While nn->me_freq_mhz is not
be set.

Fixes: ce991ab666 ("nfp: read ME frequency from vNIC ctrl memory")
Signed-off-by: Diana Wang <na.wang@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Diana Wang 2021-11-19 14:38:03 +01:00 committed by Greg Kroah-Hartman
parent b638eb32c6
commit ddd0518c1e
2 changed files with 1 additions and 4 deletions
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3
drivers/net/ethernet/netronome/nfp/nfp_net.h
View File

@ -557,7 +557,6 @@ struct nfp_net_dp {
* @exn_name: Name for Exception interrupt
* @shared_handler: Handler for shared interrupts
* @shared_name: Name for shared interrupt
* @me_freq_mhz: ME clock_freq (MHz)
* @reconfig_lock: Protects @reconfig_posted, @reconfig_timer_active,
* @reconfig_sync_present and HW reconfiguration request
* regs/machinery from async requests (sync must take
@ -639,8 +638,6 @@ struct nfp_net {
irq_handler_t shared_handler;
char shared_name[IFNAMSIZ + 8];
u32 me_freq_mhz;
bool link_up;
spinlock_t link_status_lock;

2
drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
View File

@ -1269,7 +1269,7 @@ static int nfp_net_set_coalesce(struct net_device *netdev,
* ME timestamp ticks. There are 16 ME clock cycles for each timestamp
* count.
*/
factor = nn->me_freq_mhz / 16;
factor = nn->tlv_caps.me_freq_mhz / 16;
/* Each pair of (usecs, max_frames) fields specifies that interrupts
* should be coalesced until