[dpdk-dev] [PATCH 37/80] net/sfc/base: retrieve number of MAC stats from NIC
Andrew Rybchenko
arybchenko at solarflare.com
Tue Feb 20 08:33:55 CET 2018
From: Andy Moreton <amoreton at solarflare.com>
This reports the number of stats (and hence the DMA buffer size)
for MAC stats. If MC_GET_CAPABABILITIES_V4 is not supported then
use the legacy Siena-compatible MC_CMD_MAC_NSTATS value.
Signed-off-by: Andy Moreton <amoreton at solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
drivers/net/sfc/base/ef10_nic.c | 14 ++++++++++++--
drivers/net/sfc/base/efx.h | 2 ++
drivers/net/sfc/base/siena_nic.c | 2 ++
3 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 66ea353..a23cf63 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -996,7 +996,7 @@ ef10_get_datapath_caps(
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_mcdi_req_t req;
uint8_t payload[MAX(MC_CMD_GET_CAPABILITIES_IN_LEN,
- MC_CMD_GET_CAPABILITIES_V2_OUT_LEN)];
+ MC_CMD_GET_CAPABILITIES_V4_OUT_LEN)];
efx_rc_t rc;
if ((rc = ef10_mcdi_get_pf_count(enp, &encp->enc_hw_pf_count)) != 0)
@@ -1008,7 +1008,7 @@ ef10_get_datapath_caps(
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_GET_CAPABILITIES_IN_LEN;
req.emr_out_buf = payload;
- req.emr_out_length = MC_CMD_GET_CAPABILITIES_V2_OUT_LEN;
+ req.emr_out_length = MC_CMD_GET_CAPABILITIES_V4_OUT_LEN;
efx_mcdi_execute_quiet(enp, &req);
@@ -1175,6 +1175,16 @@ ef10_get_datapath_caps(
encp->enc_tunnel_config_udp_entries_max = 0;
}
+ /* Check if firmware supports extended MAC stats. */
+ if (req.emr_out_length_used >= MC_CMD_GET_CAPABILITIES_V4_OUT_LEN) {
+ /* Extended stats buffer supported */
+ encp->enc_mac_stats_nstats = MCDI_OUT_WORD(req,
+ GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS);
+ } else {
+ /* Use Siena-compatible legacy MAC stats */
+ encp->enc_mac_stats_nstats = MC_CMD_MAC_NSTATS;
+ }
+
#undef CAP_FLAGS1
#undef CAP_FLAGS2
diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 2c7e932..fd02af1 100644
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -1232,6 +1232,8 @@ typedef struct efx_nic_cfg_s {
uint32_t enc_max_pcie_link_gen;
/* Firmware verifies integrity of NVRAM updates */
uint32_t enc_nvram_update_verify_result_supported;
+ /* Firmware support for extended MAC_STATS buffer */
+ uint32_t enc_mac_stats_nstats;
} efx_nic_cfg_t;
#define EFX_PCI_FUNCTION_IS_PF(_encp) ((_encp)->enc_vf == 0xffff)
diff --git a/drivers/net/sfc/base/siena_nic.c b/drivers/net/sfc/base/siena_nic.c
index c051c59..f518a54 100644
--- a/drivers/net/sfc/base/siena_nic.c
+++ b/drivers/net/sfc/base/siena_nic.c
@@ -156,6 +156,8 @@ siena_board_cfg(
encp->enc_nvram_update_verify_result_supported = B_FALSE;
+ encp->enc_mac_stats_nstats = MC_CMD_MAC_NSTATS;
+
return (0);
fail2:
--
2.7.4
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