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fm10k/base: fix VF multicast

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The VF will send a message to request multicast addresses with the
default vid. In the current code, if the PF has statically assigned a
VLAN to a VF, then the VF will not get the multicast addresses. Fix up
all of the various vlan messages to use identical checks (since each
check was different). Also use set as a variable, so that it simplifies
our check for whether vlan matches the pf_vid.

The new logic will allow set of a vlan if it is zero, automatically
converting to the default vid. Otherwise it will allow setting the PF
vid, or any VLAN if PF has not statically assigned a VLAN. This is
consistent behavior, and allows VF to request either 0 or the
default_vid without silently failing. Note that we need the check for
zero since VFs might not get the default VID message in time to actually
request non-zero VLANs.

Create a function, fm10k_iov_select_vid which implements the logic for
selecting a default vid. This helps us remove duplicate code and
streamlines location of this logic so that we don't make similar bugs in
the future.

Signed-off-by: Wang Xiao W <xiao.w.wang@intel.com>
This commit is contained in:
Wang Xiao W 2015-09-10 12:38:27 +08:00 committed by Thomas Monjalon
parent 9d87822572
commit e78a599651
1 changed files with 51 additions and 32 deletions
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83
drivers/net/fm10k/base/fm10k_pf.c
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@ -1218,6 +1218,24 @@ s32 fm10k_iov_msg_msix_pf(struct fm10k_hw *hw, u32 **results,
return hw->iov.ops.assign_int_moderator(hw, vf_idx);
}
/**
* fm10k_iov_select_vid - Select correct default vid
* @hw: Pointer to hardware structure
* @vid: vid to correct
*
* Will report an error if vid is out of range. For vid = 0, it will return
* either the pf_vid or sw_vid depending on which one is set.
*/
STATIC s32 fm10k_iov_select_vid(struct fm10k_vf_info *vf_info, u16 vid)
{
if (!vid)
return vf_info->pf_vid ? vf_info->pf_vid : vf_info->sw_vid;
else if (vf_info->pf_vid && vid != vf_info->pf_vid)
return FM10K_ERR_PARAM;
else
return vid;
}
/**
* fm10k_iov_msg_mac_vlan_pf - Message handler for MAC/VLAN request from VF
* @hw: Pointer to hardware structure
@ -1235,6 +1253,7 @@ s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
int err = FM10K_SUCCESS;
u8 mac[ETH_ALEN];
u32 *result;
bool set;
u16 vlan;
u32 vid;
@ -1252,19 +1271,21 @@ s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
if (err)
return err;
/* if VLAN ID is 0, set the default VLAN ID instead of 0 */
if (!vid || (vid == FM10K_VLAN_CLEAR)) {
if (vf_info->pf_vid)
vid |= vf_info->pf_vid;
else
vid |= vf_info->sw_vid;
} else if (vid != vf_info->pf_vid) {
/* verify upper 16 bits are zero */
if (vid >> 16)
return FM10K_ERR_PARAM;
}
set = !(vid & FM10K_VLAN_CLEAR);
vid &= ~FM10K_VLAN_CLEAR;
err = fm10k_iov_select_vid(vf_info, (u16)vid);
if (err < 0)
return err;
else
vid = err;
/* update VSI info for VF in regards to VLAN table */
err = hw->mac.ops.update_vlan(hw, vid, vf_info->vsi,
!(vid & FM10K_VLAN_CLEAR));
err = hw->mac.ops.update_vlan(hw, vid, vf_info->vsi, set);
}
if (!err && !!results[FM10K_MAC_VLAN_MSG_MAC]) {
@ -1280,19 +1301,18 @@ s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
memcmp(mac, vf_info->mac, ETH_ALEN))
return FM10K_ERR_PARAM;
/* if VLAN ID is 0, set the default VLAN ID instead of 0 */
if (!vlan || (vlan == FM10K_VLAN_CLEAR)) {
if (vf_info->pf_vid)
vlan |= vf_info->pf_vid;
else
vlan |= vf_info->sw_vid;
} else if (vf_info->pf_vid) {
return FM10K_ERR_PARAM;
}
set = !(vlan & FM10K_VLAN_CLEAR);
vlan &= ~FM10K_VLAN_CLEAR;
err = fm10k_iov_select_vid(vf_info, vlan);
if (err < 0)
return err;
else
vlan = (u16)err;
/* notify switch of request for new unicast address */
err = hw->mac.ops.update_uc_addr(hw, vf_info->glort, mac, vlan,
!(vlan & FM10K_VLAN_CLEAR), 0);
err = hw->mac.ops.update_uc_addr(hw, vf_info->glort,
mac, vlan, set, 0);
}
if (!err && !!results[FM10K_MAC_VLAN_MSG_MULTICAST]) {
@ -1307,19 +1327,18 @@ s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
if (!(vf_info->vf_flags & FM10K_VF_FLAG_MULTI_ENABLED))
return FM10K_ERR_PARAM;
/* if VLAN ID is 0, set the default VLAN ID instead of 0 */
if (!vlan || (vlan == FM10K_VLAN_CLEAR)) {
if (vf_info->pf_vid)
vlan |= vf_info->pf_vid;
else
vlan |= vf_info->sw_vid;
} else if (vf_info->pf_vid) {
return FM10K_ERR_PARAM;
}
set = !(vlan & FM10K_VLAN_CLEAR);
vlan &= ~FM10K_VLAN_CLEAR;
err = fm10k_iov_select_vid(vf_info, vlan);
if (err < 0)
return err;
else
vlan = (u16)err;
/* notify switch of request for new multicast address */
err = hw->mac.ops.update_mc_addr(hw, vf_info->glort, mac, vlan,
!(vlan & FM10K_VLAN_CLEAR));
err = hw->mac.ops.update_mc_addr(hw, vf_info->glort,
mac, vlan, set);
}
return err;