bnxt_en: Check hardware resources before enabling NTUPLE.
authorMichael Chan <mchan@broadcom.com>
Sun, 27 Dec 2015 23:19:24 +0000 (18:19 -0500)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Dec 2015 05:57:28 +0000 (00:57 -0500)
commit2bcfa6f6e7cf867e4aa623f84caea4bc413d38c9
tree8cb243504224f2f51c0608ee49c7f94a23398bb9
parent27e241896f2e21c96200df711659117923dec8a2
bnxt_en: Check hardware resources before enabling NTUPLE.

The hardware resources required to enable NTUPLE varies depending on
how many rx channels are configured.  We need to make sure we have the
resources before we enable NTUPLE.  Add bnxt_rfs_capable() to do the
checking.

In addition, we need to do the same checking in ndo_fix_features().  As
the rx channels are changed using ethtool -L, we call
netdev_update_features() to make the necessary adjustment for NTUPLE.

Calling netdev_update_features() in netif_running() state but before
calling bnxt_open_nic() would be a problem.  To make this work,
bnxt_set_features() has to be modified to test for BNXT_STATE_OPEN for
the true hardware state instead of checking netif_running().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/broadcom/bnxt/bnxt.c
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c