diff options
| author | Edward Cree <ecree@solarflare.com> | 2017-12-21 10:00:26 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-21 21:14:26 +0100 |
| commit | c1be48214543c4e5267c43d2c00ac2d9bb671381 (patch) | |
| tree | 6c7e91d27b02742e0615d799a338e0bc3bd811ff /drivers/net/ethernet/sfc/siena.c | |
| parent | sfc: update MCDI protocol headers (diff) | |
| download | linux-c1be48214543c4e5267c43d2c00ac2d9bb671381.tar.xz linux-c1be48214543c4e5267c43d2c00ac2d9bb671381.zip | |
sfc: support variable number of MAC stats
Medford2 NICs support more than MC_CMD_MAC_NSTATS stats, and report the new
count in a field of MC_CMD_GET_CAPABILITIES_V4. This also means that the
end generation count moves (it is, as before, the last 64 bits of the DMA
buffer, but that is no longer MC_CMD_MAC_GENERATION_END).
So read num_mac_stats from the GET_CAPABILITIES response, if present;
otherwise assume MC_CMD_MAC_NSTATS; and always use num_mac_stats - 1 rather
than MC_CMD_MAC_GENERATION_END.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/siena.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/siena.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c index 22d49ebb347c..ae8645ae4492 100644 --- a/drivers/net/ethernet/sfc/siena.c +++ b/drivers/net/ethernet/sfc/siena.c @@ -555,7 +555,7 @@ static int siena_try_update_nic_stats(struct efx_nic *efx) dma_stats = efx->stats_buffer.addr; - generation_end = dma_stats[MC_CMD_MAC_GENERATION_END]; + generation_end = dma_stats[efx->num_mac_stats - 1]; if (generation_end == EFX_MC_STATS_GENERATION_INVALID) return 0; rmb(); |