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sfc: support the ethtool ksettings API properly so that 25/50/100G works

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Store and handle ethtool link mode masks within the driver instead of
 just a single u32.  However, quite a significant amount of existing code
 wants to manipulate the masks directly, and thus now uses the first
 unsigned long (i.e. mask[0]) as though it were a legacy u32 mask.  This
 is ok because all the bits that code is interested in are in the first
 32 bits of the mask; but it might be a good idea to change them in
 future to use the proper bitmap API.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2018-01-10 18:00:14 +00:00 • committed by David S. Miller
parent 702b3d5136
commit c2ab85d2da
5 changed files with 92 additions and 83 deletions
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43
drivers/net/ethernet/sfc/efx.c
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@ -953,31 +953,42 @@ void efx_link_status_changed(struct efx_nic *efx)
netif_info(efx, link, efx->net_dev, "link down\n");
}
void efx_link_set_advertising(struct efx_nic *efx, u32 advertising)
void efx_link_set_advertising(struct efx_nic *efx,
const unsigned long *advertising)
{
efx->link_advertising = advertising;
if (advertising) {
if (advertising & ADVERTISED_Pause)
efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);
else
efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
if (advertising & ADVERTISED_Asym_Pause)
efx->wanted_fc ^= EFX_FC_TX;
}
memcpy(efx->link_advertising, advertising,
sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
efx->link_advertising[0] |= ADVERTISED_Autoneg;
if (advertising[0] & ADVERTISED_Pause)
efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);
else
efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
if (advertising[0] & ADVERTISED_Asym_Pause)
efx->wanted_fc ^= EFX_FC_TX;
}
/* Equivalent to efx_link_set_advertising with all-zeroes, except does not
* force the Autoneg bit on.
*/
void efx_link_clear_advertising(struct efx_nic *efx)
{
bitmap_zero(efx->link_advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
}
void efx_link_set_wanted_fc(struct efx_nic *efx, u8 wanted_fc)
{
efx->wanted_fc = wanted_fc;
if (efx->link_advertising) {
if (efx->link_advertising[0]) {
if (wanted_fc & EFX_FC_RX)
efx->link_advertising |= (ADVERTISED_Pause |
ADVERTISED_Asym_Pause);
efx->link_advertising[0] |= (ADVERTISED_Pause |
ADVERTISED_Asym_Pause);
else
efx->link_advertising &= ~(ADVERTISED_Pause |
ADVERTISED_Asym_Pause);
efx->link_advertising[0] &= ~(ADVERTISED_Pause |
ADVERTISED_Asym_Pause);
if (wanted_fc & EFX_FC_TX)
efx->link_advertising ^= ADVERTISED_Asym_Pause;
efx->link_advertising[0] ^= ADVERTISED_Asym_Pause;
}
}