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sfxge(4): infer port mode bandwidth from max link speed

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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.

Submitted by:   Richard Houldsworth <rhouldsworth at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18279
This commit is contained in:
Andrew Rybchenko 2018-11-30 07:09:23 +00:00
parent c42b6a3560
commit 109f5727a0
1 changed files with 20 additions and 3 deletions
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23
sys/dev/sfxge/common/ef10_nic.c
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@ -160,9 +160,11 @@ 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;
@ -172,6 +174,21 @@ 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;