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sfc: support configuring vf spoofchk on EF10 VFs

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Corresponds to the MAC_SPOOFING_TX privilege in the hardware.
Some firmware versions on some cards don't support the feature, so check
 the TX_MAC_SECURITY capability and fail EOPNOTSUPP if trying to enable
 spoofchk on a NIC that doesn't support it.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2020-03-12 19:21:39 +00:00 committed by David S. Miller
parent fa83820e5c
commit 085793f038
1 changed files with 63 additions and 3 deletions
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66
drivers/net/ethernet/sfc/ef10_sriov.c
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@ -685,10 +685,70 @@ int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
return rc ? rc : rc2;
}
int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
bool spoofchk)
static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i,
u32 mask, u32 value)
{
return spoofchk ? -EOPNOTSUPP : 0;
MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN);
MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN);
struct efx_ef10_nic_data *nic_data = efx->nic_data;
u32 old_mask, new_mask;
size_t outlen;
int rc;
EFX_WARN_ON_PARANOID((value & ~mask) != 0);
/* Get privilege mask */
MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION,
PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index,
PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i);
rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
pm_inbuf, sizeof(pm_inbuf),
pm_outbuf, sizeof(pm_outbuf), &outlen);
if (rc != 0)
return rc;
if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
return -EIO;
old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK);
new_mask = old_mask & ~mask;
new_mask |= value;
if (new_mask == old_mask)
return 0;
new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE;
/* Set privilege mask */
MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask);
rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
pm_inbuf, sizeof(pm_inbuf),
pm_outbuf, sizeof(pm_outbuf), &outlen);
if (rc != 0)
return rc;
if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
return -EIO;
return 0;
}
int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
/* Can't enable spoofchk if firmware doesn't support it. */
if (!(nic_data->datapath_caps &
BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) &&
spoofchk)
return -EOPNOTSUPP;
return efx_ef10_sriov_set_privilege_mask(efx, vf_i,
MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX,
spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX);
}
int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,