| Message ID | 20231113125856.346047-5-ivecera@redhat.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | i40e: Simplify VSI and VEB handling | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Guessing tree name failed - patch did not apply |
On 13.11.2023 13:58, Ivan Vecera wrote: > Although the i40e supports so-called floating VEB (VEB without > an uplink connection to external network), this support is > broken. This functionality is currently unused (except debugfs) > but it will be used by subsequent series for switchdev mode > slow-path. Fix this by following: > > 1) Handle correctly floating VEB (VEB with uplink_seid == 0) > in i40e_reconstitute_veb() and look for owner VSI and > create it only for non-floating VEBs and also set bridge > mode also only for such VEBs as the floating ones are using nit: Too many "also" > always VEB mode. > 2) Handle correctly floating VEB in i40e_veb_release() and > disallow its release when there are some VSIs. This is > different from regular VEB that have owner VSI that is > connected to VEB's uplink after VEB deletion by FW. > 3) Fix i40e_add_veb() to handle 'vsi' that is NULL for floating > VEBs. For floating VEB use 0 for downlink SEID and 'true' > for 'default_port' parameters as per datasheet. > 4) Fix 'add relay' command in i40e_dbg_command_write() to allow > to create floating VEB by 'add relay 0 0' or 'add relay' > > Tested using debugfs: > 1) Initial state > [root@host net-next]# echo dump switch > $CMD > [root@host net-next]# dmesg -c > [ 173.701286] i40e 0000:02:00.0: header: 3 reported 3 total > [ 173.706701] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 > [ 173.713241] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 > [ 173.719507] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 > > 2) Add floating VEB > [root@host net-next]# CMD="/sys/kernel/debug/i40e/0000:02:00.0/command" > [root@host net-next]# echo add relay > $CMD > [root@host net-next]# dmesg -c > [ 245.551720] i40e 0000:02:00.0: added relay 162 > [root@host net-next]# echo dump switch > $CMD > [root@host net-next]# dmesg -c > [ 276.984371] i40e 0000:02:00.0: header: 4 reported 4 total > [ 276.989779] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 > [ 276.996302] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 > [ 277.002569] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 > [ 277.009091] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 > > 3) Add VMDQ2 VSI to this new VEB > [root@host net-next]# echo add vsi 162 > $CMD > [root@host net-next]# dmesg -c > [ 332.314030] i40e 0000:02:00.0: added VSI 394 to relay 162 > [ 332.337486] enp2s0f0np0v0: NIC Link is Up, 40 Gbps Full Duplex, Flow Control: None > [root@host net-next]# echo dump switch > $CMD > [root@host net-next]# dmesg -c > [ 387.284490] i40e 0000:02:00.0: header: 5 reported 5 total > [ 387.289904] i40e 0000:02:00.0: type=19 seid=394 uplink=162 downlink=16 > [ 387.296446] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 > [ 387.302708] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 > [ 387.309234] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 > [ 387.315500] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 > > 4) Try to delete the VEB > [root@host net-next]# echo del relay 162 > $CMD > [root@host net-next]# dmesg -c > [ 428.749297] i40e 0000:02:00.0: deleting relay 162 > [ 428.754011] i40e 0000:02:00.0: can't remove VEB 162 with 1 VSIs left > > 5) Do PF reset and check switch status after rebuild > [root@host net-next]# echo pfr > $CMD > [root@host net-next]# echo dump switch > $CMD > [root@host net-next]# dmesg -c > [ 738.056172] i40e 0000:02:00.0: header: 5 reported 5 total > [ 738.061577] i40e 0000:02:00.0: type=19 seid=394 uplink=162 downlink=16 > [ 738.068104] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 > [ 738.074367] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 > [ 738.080892] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 > [ 738.087160] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 > > 6) Delete VSI and delete VEB > [root@host net-next]# echo del vsi 394 > $CMD > [root@host net-next]# echo del relay 162 > $CMD > [root@host net-next]# echo dump switch > $CMD > [root@host net-next]# dmesg -c > [ 1233.081126] i40e 0000:02:00.0: deleting VSI 394 > [ 1239.345139] i40e 0000:02:00.0: deleting relay 162 > [ 1244.886920] i40e 0000:02:00.0: header: 3 reported 3 total > [ 1244.892328] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 > [ 1244.898853] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 > [ 1244.905119] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 > > Signed-off-by: Ivan Vecera <ivecera@redhat.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> > --- > .../net/ethernet/intel/i40e/i40e_debugfs.c | 29 +++--- > drivers/net/ethernet/intel/i40e/i40e_main.c | 89 ++++++++++--------- > 2 files changed, 68 insertions(+), 50 deletions(-) > > diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c > index d26348db125f..b2e3bde8ae1d 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c > @@ -829,10 +829,14 @@ static ssize_t i40e_dbg_command_write(struct file *filp, > > } else if (strncmp(cmd_buf, "add relay", 9) == 0) { > struct i40e_veb *veb; > + u8 enabled_tc = 0x1; > int uplink_seid; > > cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid); > - if (cnt != 2) { > + if (cnt == 0) { > + uplink_seid = 0; > + vsi_seid = 0; > + } else if (cnt != 2) { > dev_info(&pf->pdev->dev, > "add relay: bad command string, cnt=%d\n", > cnt); > @@ -844,23 +848,28 @@ static ssize_t i40e_dbg_command_write(struct file *filp, > goto command_write_done; > } > > - vsi = i40e_dbg_find_vsi(pf, vsi_seid); > - if (!vsi) { > - dev_info(&pf->pdev->dev, > - "add relay: VSI %d not found\n", vsi_seid); > - goto command_write_done; > - } > - > veb = i40e_veb_get_by_seid(pf, uplink_seid); > if (!veb && uplink_seid != 0 && uplink_seid != pf->mac_seid) { > dev_info(&pf->pdev->dev, > "add relay: relay uplink %d not found\n", > uplink_seid); > goto command_write_done; > + } else if (uplink_seid) { > + vsi = i40e_vsi_get_by_seid(pf, vsi_seid); > + if (!vsi) { > + dev_info(&pf->pdev->dev, > + "add relay: VSI %d not found\n", > + vsi_seid); > + goto command_write_done; > + } > + enabled_tc = vsi->tc_config.enabled_tc; > + } else if (vsi_seid) { > + dev_info(&pf->pdev->dev, > + "add relay: VSI must be 0 for floating relay\n"); > + goto command_write_done; > } > > - veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid, > - vsi->tc_config.enabled_tc); > + veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid, enabled_tc); > if (veb) > dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid); > else > diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c > index e7be145f298a..6ae1206e1c1c 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_main.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c > @@ -10379,41 +10379,48 @@ static int i40e_reconstitute_veb(struct i40e_veb *veb) > struct i40e_vsi *vsi; > int v, ret; > > - /* build VSI that owns this VEB, temporarily attached to base VEB */ > - i40e_pf_for_each_vsi(pf, v, vsi) > - if (vsi->veb_idx == veb->idx && > - vsi->flags & I40E_VSI_FLAG_VEB_OWNER) { > - ctl_vsi = vsi; > - break; > + if (veb->uplink_seid) { > + /* Look for VSI that owns this VEB, temporarily attached to base VEB */ > + i40e_pf_for_each_vsi(pf, v, vsi) > + if (vsi->veb_idx == veb->idx && > + vsi->flags & I40E_VSI_FLAG_VEB_OWNER) { > + ctl_vsi = vsi; > + break; > + } > + > + if (!ctl_vsi) { > + dev_info(&pf->pdev->dev, > + "missing owner VSI for veb_idx %d\n", > + veb->idx); > + ret = -ENOENT; > + goto end_reconstitute; > } > + if (ctl_vsi != pf->vsi[pf->lan_vsi]) > + ctl_vsi->uplink_seid = > + pf->vsi[pf->lan_vsi]->uplink_seid; > > - if (!ctl_vsi) { > - dev_info(&pf->pdev->dev, > - "missing owner VSI for veb_idx %d\n", veb->idx); > - ret = -ENOENT; > - goto end_reconstitute; > - } > - if (ctl_vsi != pf->vsi[pf->lan_vsi]) > - ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; > - ret = i40e_add_vsi(ctl_vsi); > - if (ret) { > - dev_info(&pf->pdev->dev, > - "rebuild of veb_idx %d owner VSI failed: %d\n", > - veb->idx, ret); > - goto end_reconstitute; > + ret = i40e_add_vsi(ctl_vsi); > + if (ret) { > + dev_info(&pf->pdev->dev, > + "rebuild of veb_idx %d owner VSI failed: %d\n", > + veb->idx, ret); > + goto end_reconstitute; > + } > + i40e_vsi_reset_stats(ctl_vsi); > } > - i40e_vsi_reset_stats(ctl_vsi); > > /* create the VEB in the switch and move the VSI onto the VEB */ > ret = i40e_add_veb(veb, ctl_vsi); > if (ret) > goto end_reconstitute; > > - if (test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) > - veb->bridge_mode = BRIDGE_MODE_VEB; > - else > - veb->bridge_mode = BRIDGE_MODE_VEPA; > - i40e_config_bridge_mode(veb); > + if (veb->uplink_seid) { > + if (test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) > + veb->bridge_mode = BRIDGE_MODE_VEB; > + else > + veb->bridge_mode = BRIDGE_MODE_VEPA; > + i40e_config_bridge_mode(veb); > + } > > /* create the remaining VSIs attached to this VEB */ > i40e_pf_for_each_vsi(pf, v, vsi) { > @@ -14716,29 +14723,29 @@ void i40e_veb_release(struct i40e_veb *veb) > /* find the remaining VSI and check for extras */ > i40e_pf_for_each_vsi(pf, i, vsi_it) > if (vsi_it->uplink_seid == veb->seid) { > - vsi = vsi_it; > + if (vsi_it->flags & I40E_VSI_FLAG_VEB_OWNER) > + vsi = vsi_it; > n++; > } > > - if (n != 1) { > + /* Floating VEB has to be empty and regular one must have > + * single owner VSI. > + */ > + if ((veb->uplink_seid && n != 1) || (!veb->uplink_seid && n != 0)) { > dev_info(&pf->pdev->dev, > "can't remove VEB %d with %d VSIs left\n", > veb->seid, n); > return; > } > > - /* move the remaining VSI to uplink veb */ > - vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER; > + /* For regular VEB move the owner VSI to uplink VEB */ > if (veb->uplink_seid) { > + vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER; > vsi->uplink_seid = veb->uplink_seid; > if (veb->uplink_seid == pf->mac_seid) > vsi->veb_idx = I40E_NO_VEB; > else > vsi->veb_idx = veb->veb_idx; > - } else { > - /* floating VEB */ > - vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; > - vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx; > } > > i40e_aq_delete_element(&pf->hw, veb->seid, NULL); > @@ -14756,8 +14763,8 @@ static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi) > bool enable_stats = !!test_bit(I40E_FLAG_VEB_STATS_ENA, pf->flags); > int ret; > > - ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid, > - veb->enabled_tc, false, > + ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi ? vsi->seid : 0, > + veb->enabled_tc, vsi ? false : true, > &veb->seid, enable_stats, NULL); > > /* get a VEB from the hardware */ > @@ -14789,9 +14796,11 @@ static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi) > return -ENOENT; > } > > - vsi->uplink_seid = veb->seid; > - vsi->veb_idx = veb->idx; > - vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; > + if (vsi) { > + vsi->uplink_seid = veb->seid; > + vsi->veb_idx = veb->idx; > + vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; > + } > > return 0; > } > @@ -14817,7 +14826,7 @@ struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, > u8 enabled_tc) > { > struct i40e_veb *veb, *uplink_veb = NULL; > - struct i40e_vsi *vsi; > + struct i40e_vsi *vsi = NULL; > int veb_idx; > int ret; >
diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c index d26348db125f..b2e3bde8ae1d 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -829,10 +829,14 @@ static ssize_t i40e_dbg_command_write(struct file *filp, } else if (strncmp(cmd_buf, "add relay", 9) == 0) { struct i40e_veb *veb; + u8 enabled_tc = 0x1; int uplink_seid; cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid); - if (cnt != 2) { + if (cnt == 0) { + uplink_seid = 0; + vsi_seid = 0; + } else if (cnt != 2) { dev_info(&pf->pdev->dev, "add relay: bad command string, cnt=%d\n", cnt); @@ -844,23 +848,28 @@ static ssize_t i40e_dbg_command_write(struct file *filp, goto command_write_done; } - vsi = i40e_dbg_find_vsi(pf, vsi_seid); - if (!vsi) { - dev_info(&pf->pdev->dev, - "add relay: VSI %d not found\n", vsi_seid); - goto command_write_done; - } - veb = i40e_veb_get_by_seid(pf, uplink_seid); if (!veb && uplink_seid != 0 && uplink_seid != pf->mac_seid) { dev_info(&pf->pdev->dev, "add relay: relay uplink %d not found\n", uplink_seid); goto command_write_done; + } else if (uplink_seid) { + vsi = i40e_vsi_get_by_seid(pf, vsi_seid); + if (!vsi) { + dev_info(&pf->pdev->dev, + "add relay: VSI %d not found\n", + vsi_seid); + goto command_write_done; + } + enabled_tc = vsi->tc_config.enabled_tc; + } else if (vsi_seid) { + dev_info(&pf->pdev->dev, + "add relay: VSI must be 0 for floating relay\n"); + goto command_write_done; } - veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid, - vsi->tc_config.enabled_tc); + veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid, enabled_tc); if (veb) dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid); else diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index e7be145f298a..6ae1206e1c1c 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -10379,41 +10379,48 @@ static int i40e_reconstitute_veb(struct i40e_veb *veb) struct i40e_vsi *vsi; int v, ret; - /* build VSI that owns this VEB, temporarily attached to base VEB */ - i40e_pf_for_each_vsi(pf, v, vsi) - if (vsi->veb_idx == veb->idx && - vsi->flags & I40E_VSI_FLAG_VEB_OWNER) { - ctl_vsi = vsi; - break; + if (veb->uplink_seid) { + /* Look for VSI that owns this VEB, temporarily attached to base VEB */ + i40e_pf_for_each_vsi(pf, v, vsi) + if (vsi->veb_idx == veb->idx && + vsi->flags & I40E_VSI_FLAG_VEB_OWNER) { + ctl_vsi = vsi; + break; + } + + if (!ctl_vsi) { + dev_info(&pf->pdev->dev, + "missing owner VSI for veb_idx %d\n", + veb->idx); + ret = -ENOENT; + goto end_reconstitute; } + if (ctl_vsi != pf->vsi[pf->lan_vsi]) + ctl_vsi->uplink_seid = + pf->vsi[pf->lan_vsi]->uplink_seid; - if (!ctl_vsi) { - dev_info(&pf->pdev->dev, - "missing owner VSI for veb_idx %d\n", veb->idx); - ret = -ENOENT; - goto end_reconstitute; - } - if (ctl_vsi != pf->vsi[pf->lan_vsi]) - ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; - ret = i40e_add_vsi(ctl_vsi); - if (ret) { - dev_info(&pf->pdev->dev, - "rebuild of veb_idx %d owner VSI failed: %d\n", - veb->idx, ret); - goto end_reconstitute; + ret = i40e_add_vsi(ctl_vsi); + if (ret) { + dev_info(&pf->pdev->dev, + "rebuild of veb_idx %d owner VSI failed: %d\n", + veb->idx, ret); + goto end_reconstitute; + } + i40e_vsi_reset_stats(ctl_vsi); } - i40e_vsi_reset_stats(ctl_vsi); /* create the VEB in the switch and move the VSI onto the VEB */ ret = i40e_add_veb(veb, ctl_vsi); if (ret) goto end_reconstitute; - if (test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) - veb->bridge_mode = BRIDGE_MODE_VEB; - else - veb->bridge_mode = BRIDGE_MODE_VEPA; - i40e_config_bridge_mode(veb); + if (veb->uplink_seid) { + if (test_bit(I40E_FLAG_VEB_MODE_ENA, pf->flags)) + veb->bridge_mode = BRIDGE_MODE_VEB; + else + veb->bridge_mode = BRIDGE_MODE_VEPA; + i40e_config_bridge_mode(veb); + } /* create the remaining VSIs attached to this VEB */ i40e_pf_for_each_vsi(pf, v, vsi) { @@ -14716,29 +14723,29 @@ void i40e_veb_release(struct i40e_veb *veb) /* find the remaining VSI and check for extras */ i40e_pf_for_each_vsi(pf, i, vsi_it) if (vsi_it->uplink_seid == veb->seid) { - vsi = vsi_it; + if (vsi_it->flags & I40E_VSI_FLAG_VEB_OWNER) + vsi = vsi_it; n++; } - if (n != 1) { + /* Floating VEB has to be empty and regular one must have + * single owner VSI. + */ + if ((veb->uplink_seid && n != 1) || (!veb->uplink_seid && n != 0)) { dev_info(&pf->pdev->dev, "can't remove VEB %d with %d VSIs left\n", veb->seid, n); return; } - /* move the remaining VSI to uplink veb */ - vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER; + /* For regular VEB move the owner VSI to uplink VEB */ if (veb->uplink_seid) { + vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER; vsi->uplink_seid = veb->uplink_seid; if (veb->uplink_seid == pf->mac_seid) vsi->veb_idx = I40E_NO_VEB; else vsi->veb_idx = veb->veb_idx; - } else { - /* floating VEB */ - vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; - vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx; } i40e_aq_delete_element(&pf->hw, veb->seid, NULL); @@ -14756,8 +14763,8 @@ static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi) bool enable_stats = !!test_bit(I40E_FLAG_VEB_STATS_ENA, pf->flags); int ret; - ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid, - veb->enabled_tc, false, + ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi ? vsi->seid : 0, + veb->enabled_tc, vsi ? false : true, &veb->seid, enable_stats, NULL); /* get a VEB from the hardware */ @@ -14789,9 +14796,11 @@ static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi) return -ENOENT; } - vsi->uplink_seid = veb->seid; - vsi->veb_idx = veb->idx; - vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; + if (vsi) { + vsi->uplink_seid = veb->seid; + vsi->veb_idx = veb->idx; + vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; + } return 0; } @@ -14817,7 +14826,7 @@ struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u8 enabled_tc) { struct i40e_veb *veb, *uplink_veb = NULL; - struct i40e_vsi *vsi; + struct i40e_vsi *vsi = NULL; int veb_idx; int ret;
Although the i40e supports so-called floating VEB (VEB without an uplink connection to external network), this support is broken. This functionality is currently unused (except debugfs) but it will be used by subsequent series for switchdev mode slow-path. Fix this by following: 1) Handle correctly floating VEB (VEB with uplink_seid == 0) in i40e_reconstitute_veb() and look for owner VSI and create it only for non-floating VEBs and also set bridge mode also only for such VEBs as the floating ones are using always VEB mode. 2) Handle correctly floating VEB in i40e_veb_release() and disallow its release when there are some VSIs. This is different from regular VEB that have owner VSI that is connected to VEB's uplink after VEB deletion by FW. 3) Fix i40e_add_veb() to handle 'vsi' that is NULL for floating VEBs. For floating VEB use 0 for downlink SEID and 'true' for 'default_port' parameters as per datasheet. 4) Fix 'add relay' command in i40e_dbg_command_write() to allow to create floating VEB by 'add relay 0 0' or 'add relay' Tested using debugfs: 1) Initial state [root@host net-next]# echo dump switch > $CMD [root@host net-next]# dmesg -c [ 173.701286] i40e 0000:02:00.0: header: 3 reported 3 total [ 173.706701] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 [ 173.713241] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 [ 173.719507] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 2) Add floating VEB [root@host net-next]# CMD="/sys/kernel/debug/i40e/0000:02:00.0/command" [root@host net-next]# echo add relay > $CMD [root@host net-next]# dmesg -c [ 245.551720] i40e 0000:02:00.0: added relay 162 [root@host net-next]# echo dump switch > $CMD [root@host net-next]# dmesg -c [ 276.984371] i40e 0000:02:00.0: header: 4 reported 4 total [ 276.989779] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 [ 276.996302] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 [ 277.002569] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 [ 277.009091] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 3) Add VMDQ2 VSI to this new VEB [root@host net-next]# echo add vsi 162 > $CMD [root@host net-next]# dmesg -c [ 332.314030] i40e 0000:02:00.0: added VSI 394 to relay 162 [ 332.337486] enp2s0f0np0v0: NIC Link is Up, 40 Gbps Full Duplex, Flow Control: None [root@host net-next]# echo dump switch > $CMD [root@host net-next]# dmesg -c [ 387.284490] i40e 0000:02:00.0: header: 5 reported 5 total [ 387.289904] i40e 0000:02:00.0: type=19 seid=394 uplink=162 downlink=16 [ 387.296446] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 [ 387.302708] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 [ 387.309234] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 [ 387.315500] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 4) Try to delete the VEB [root@host net-next]# echo del relay 162 > $CMD [root@host net-next]# dmesg -c [ 428.749297] i40e 0000:02:00.0: deleting relay 162 [ 428.754011] i40e 0000:02:00.0: can't remove VEB 162 with 1 VSIs left 5) Do PF reset and check switch status after rebuild [root@host net-next]# echo pfr > $CMD [root@host net-next]# echo dump switch > $CMD [root@host net-next]# dmesg -c [ 738.056172] i40e 0000:02:00.0: header: 5 reported 5 total [ 738.061577] i40e 0000:02:00.0: type=19 seid=394 uplink=162 downlink=16 [ 738.068104] i40e 0000:02:00.0: type=17 seid=162 uplink=0 downlink=0 [ 738.074367] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 [ 738.080892] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 [ 738.087160] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 6) Delete VSI and delete VEB [root@host net-next]# echo del vsi 394 > $CMD [root@host net-next]# echo del relay 162 > $CMD [root@host net-next]# echo dump switch > $CMD [root@host net-next]# dmesg -c [ 1233.081126] i40e 0000:02:00.0: deleting VSI 394 [ 1239.345139] i40e 0000:02:00.0: deleting relay 162 [ 1244.886920] i40e 0000:02:00.0: header: 3 reported 3 total [ 1244.892328] i40e 0000:02:00.0: type=19 seid=392 uplink=160 downlink=16 [ 1244.898853] i40e 0000:02:00.0: type=17 seid=160 uplink=2 downlink=0 [ 1244.905119] i40e 0000:02:00.0: type=19 seid=390 uplink=160 downlink=16 Signed-off-by: Ivan Vecera <ivecera@redhat.com> --- .../net/ethernet/intel/i40e/i40e_debugfs.c | 29 +++--- drivers/net/ethernet/intel/i40e/i40e_main.c | 89 ++++++++++--------- 2 files changed, 68 insertions(+), 50 deletions(-)