[dpdk-dev] [PATCH 07/11] net/sfc/base: infer port mode bandwidth from max link speed

[Andrew Rybchenko <arybchenko@solarflare.com>]

From: Richard Houldsworth <rhouldsworth@solarflare.com>

Limit the port mode bandwidth calculations by the maximum
reported link speed. This system detects 25G vs 10G cards,
and 100G port modes vs 40G.

Signed-off-by: Richard Houldsworth <rhouldsworth@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/base/ef10_nic.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 8cd76d690..c197ff957 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -133,9 +133,11 @@ ef10_nic_get_port_mode_bandwidth(
 {
 	uint32_t port_modes;
 	uint32_t current_mode;
-	uint32_t single_lane = 10000;
-	uint32_t dual_lane   = 50000;
-	uint32_t quad_lane   = 40000;
+	efx_port_t *epp = &(enp->en_port);
+
+	uint32_t single_lane;
+	uint32_t dual_lane;
+	uint32_t quad_lane;
 	uint32_t bandwidth;
 	efx_rc_t rc;
 
@@ -145,6 +147,21 @@ ef10_nic_get_port_mode_bandwidth(
 		goto fail1;
 	}
 
+	if (epp->ep_phy_cap_mask & (1 << EFX_PHY_CAP_25000FDX))
+		single_lane = 25000;
+	else
+		single_lane = 10000;
+
+	if (epp->ep_phy_cap_mask & (1 << EFX_PHY_CAP_50000FDX))
+		dual_lane = 50000;
+	else
+		dual_lane = 20000;
+
+	if (epp->ep_phy_cap_mask & (1 << EFX_PHY_CAP_100000FDX))
+		quad_lane = 100000;
+	else
+		quad_lane = 40000;
+
 	switch (current_mode) {
 	case TLV_PORT_MODE_1x1_NA:			/* mode 0 */
 		bandwidth = single_lane;
-- 
2.17.1