diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index cdb073a6297e..f9a15cbf73ef 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -3793,6 +3793,93 @@ int bnx2x_setup_tc(struct net_device *dev, u8 num_tc) return 0; } +/* New mac for VF. Consider these cases: + * 1. VF hasn't been acquired yet - save the mac in local bulletin board and + * supply at acquire. + * 2. VF has already been acquired but has not yet initialized - store in local + * bulletin board. mac will be posted on VF bulletin board after VF init. VF + * will configure this mac when it is ready. + * 3. VF has already initialized but has not yet setup a queue - post the new + * mac on VF's bulletin board right now. VF will configure this mac when it + * is ready. + * 4. VF has already set a queue - delete any macs already configured for this + * queue and manually config the new mac. + * In any event, once this function has been called refuse any attempts by the + * VF to configure any mac for itself except for this mac. In case of a race + * where the VF fails to see the new post on its bulletin board before sending a + * mac configuration request, the PF will simply fail the request and VF can try + * again after consulting its bulletin board + */ +int bnx2x_set_vf_mac(struct net_device *dev, int queue, u8 *mac) +{ + struct bnx2x *bp = netdev_priv(dev); + int rc, q_logical_state, vfidx = queue; + struct bnx2x_virtf *vf = BP_VF(bp, vfidx); + struct pf_vf_bulletin_content *bulletin = BP_VF_BULLETIN(bp, vfidx); + + /* if SRIOV is disabled there is nothing to do (and somewhere, someone + * has erred). + */ + if (!IS_SRIOV(bp)) { + BNX2X_ERR("bnx2x_set_vf_mac called though sriov is disabled\n"); + return -EINVAL; + } + + if (!is_valid_ether_addr(mac)) { + BNX2X_ERR("mac address invalid\n"); + return -EINVAL; + } + + /* update PF's copy of the VF's bulletin. will no longer accept mac + * configuration requests from vf unless match this mac + */ + bulletin->valid_bitmap |= 1 << MAC_ADDR_VALID; + memcpy(bulletin->mac, mac, ETH_ALEN); + + /* Post update on VF's bulletin board */ + rc = bnx2x_post_vf_bulletin(bp, vfidx); + if (rc) { + BNX2X_ERR("failed to update VF[%d] bulletin\n", vfidx); + return rc; + } + + /* is vf initialized and queue set up? */ + q_logical_state = + bnx2x_get_q_logical_state(bp, &bnx2x_vfq(vf, 0, sp_obj)); + if (vf->state == VF_ENABLED && + q_logical_state == BNX2X_Q_LOGICAL_STATE_ACTIVE) { + /* configure the mac in device on this vf's queue */ + unsigned long flags = 0; + struct bnx2x_vlan_mac_obj *mac_obj = &bnx2x_vfq(vf, 0, mac_obj); + + /* must lock vfpf channel to protect against vf flows */ + bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC); + + /* remove existing eth macs */ + rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_ETH_MAC, true); + if (rc) { + BNX2X_ERR("failed to delete eth macs\n"); + return -EINVAL; + } + + /* remove existing uc list macs */ + rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_UC_LIST_MAC, true); + if (rc) { + BNX2X_ERR("failed to delete uc_list macs\n"); + return -EINVAL; + } + + /* configure the new mac to device */ + __set_bit(RAMROD_COMP_WAIT, &flags); + bnx2x_set_mac_one(bp, (u8 *)&bulletin->mac, mac_obj, true, + BNX2X_ETH_MAC, &flags); + + bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC); + } + + return rc; +} + /* called with rtnl_lock */ int bnx2x_change_mac_addr(struct net_device *dev, void *p) { |