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

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: ce991ab6662a ("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>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h
index df20373..0b1865e 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h
@@ -565,7 +565,6 @@ 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
@@ -650,8 +649,6 @@ 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;
 

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index 1de076f..cf78829 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -1344,7 +1344,7 @@ 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