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i40e: partition the ring_cookie to get VF index

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Do not use the user-def field for determining the VF target. Instead,
similar to ixgbe, partition the ring_cookie value into 8bits of VF
index, along with 32bits of queue number. This is better than using the
user-def field, because it leaves the field open for extension in
a future patch which will enable flexible data. Also, this matches with
convention used by ixgbe and other drivers.

Change-Id: Ie36745186d817216b12f0313b99ec95cb8a9130c
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2017-02-06 14:38:48 -08:00 committed by Jeff Kirsher
parent 9229e99334
commit 43b15697a3
1 changed files with 40 additions and 34 deletions
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74
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
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@ -2458,8 +2458,13 @@ no_input_set:
vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
if (vsi && vsi->type == I40E_VSI_SRIOV) {
fsp->h_ext.data[1] = htonl(vsi->vf_id);
fsp->m_ext.data[1] = htonl(0x1);
/* VFs are zero-indexed by the driver, but ethtool
* expects them to be one-indexed, so add one here
*/
u64 ring_vf = vsi->vf_id + 1;
ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
fsp->ring_cookie |= ring_vf;
}
}
@ -3038,9 +3043,10 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
{
struct ethtool_rx_flow_spec *fsp;
struct i40e_fdir_filter *input;
u16 dest_vsi = 0, q_index = 0;
struct i40e_pf *pf;
int ret = -EINVAL;
u16 vf_id;
u8 dest_ctl;
if (!vsi)
return -EINVAL;
@ -3074,9 +3080,32 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
return -EINVAL;
}
if ((fsp->ring_cookie != RX_CLS_FLOW_DISC) &&
(fsp->ring_cookie >= vsi->num_queue_pairs))
return -EINVAL;
/* ring_cookie is either the drop index, or is a mask of the queue
* index and VF id we wish to target.
*/
if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
} else {
u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
if (!vf) {
if (ring >= vsi->num_queue_pairs)
return -EINVAL;
dest_vsi = vsi->id;
} else {
/* VFs are zero-indexed, so we subtract one here */
vf--;
if (vf >= pf->num_alloc_vfs)
return -EINVAL;
if (ring >= pf->vf[vf].num_queue_pairs)
return -EINVAL;
dest_vsi = pf->vf[vf].lan_vsi_id;
}
dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
q_index = ring;
}
input = kzalloc(sizeof(*input), GFP_KERNEL);
@ -3084,19 +3113,13 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
return -ENOMEM;
input->fd_id = fsp->location;
if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
else
input->dest_ctl =
I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
input->q_index = fsp->ring_cookie;
input->flex_off = 0;
input->pctype = 0;
input->dest_vsi = vsi->id;
input->q_index = q_index;
input->dest_vsi = dest_vsi;
input->dest_ctl = dest_ctl;
input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
input->flow_type = fsp->flow_type;
input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
@ -3108,23 +3131,6 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
if (ntohl(fsp->m_ext.data[1])) {
vf_id = ntohl(fsp->h_ext.data[1]);
if (vf_id >= pf->num_alloc_vfs) {
netif_info(pf, drv, vsi->netdev,
"Invalid VF id %d\n", vf_id);
goto free_input;
}
/* Find vsi id from vf id and override dest vsi */
input->dest_vsi = pf->vf[vf_id].lan_vsi_id;
if (input->q_index >= pf->vf[vf_id].num_queue_pairs) {
netif_info(pf, drv, vsi->netdev,
"Invalid queue id %d for VF %d\n",
input->q_index, vf_id);
goto free_input;
}
}
ret = i40e_add_del_fdir(vsi, input, true);
if (ret)
goto free_input;