From 7b8c7b54f0070edb207add4777e68e4e79d7c3fe Mon Sep 17 00:00:00 2001 From: Shradha Shah Date: Wed, 6 May 2015 00:58:54 +0100 Subject: [PATCH] sfc: manually allocate and free vadaptors To be able to use MC_CMD_VADAPTOR_SET_MAC, vadaptors must be manually allocated and freed as automatic vadaptors will disappear when their reference_count reaches zero, which must happen before the MAC address is changed. Vadaptors are allocated and freed in the vswitching_probe/remove functions for PFs and VFs, and this means that vadaptors are restored correctly following an MC reboot or other reset when required. Signed-off-by: Shradha Shah Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/ef10.c | 12 ++--- drivers/net/ethernet/sfc/ef10_sriov.c | 71 ++++++++++++++++++++++++--- drivers/net/ethernet/sfc/ef10_sriov.h | 9 ++-- 3 files changed, 76 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index ae98e423e426..0dff8123da04 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -3760,9 +3760,9 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = { .ptp_write_host_time = efx_ef10_ptp_write_host_time_vf, .ptp_set_ts_config = efx_ef10_ptp_set_ts_config_vf, #ifdef CONFIG_SFC_SRIOV - .vswitching_probe = efx_port_dummy_op_int, - .vswitching_restore = efx_port_dummy_op_int, - .vswitching_remove = efx_port_dummy_op_void, + .vswitching_probe = efx_ef10_vswitching_probe_vf, + .vswitching_restore = efx_ef10_vswitching_restore_vf, + .vswitching_remove = efx_ef10_vswitching_remove_vf, #endif .revision = EFX_REV_HUNT_A0, .max_dma_mask = DMA_BIT_MASK(ESF_DZ_TX_KER_BUF_ADDR_WIDTH), @@ -3876,9 +3876,9 @@ const struct efx_nic_type efx_hunt_a0_nic_type = { .sriov_set_vf_vlan = efx_ef10_sriov_set_vf_vlan, .sriov_set_vf_spoofchk = efx_ef10_sriov_set_vf_spoofchk, .sriov_get_vf_config = efx_ef10_sriov_get_vf_config, - .vswitching_probe = efx_ef10_vswitching_probe, - .vswitching_restore = efx_ef10_vswitching_restore, - .vswitching_remove = efx_ef10_vswitching_remove, + .vswitching_probe = efx_ef10_vswitching_probe_pf, + .vswitching_restore = efx_ef10_vswitching_restore_pf, + .vswitching_remove = efx_ef10_vswitching_remove_pf, #endif .revision = EFX_REV_HUNT_A0, diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c index b9545bf03798..1b93acf2d28d 100644 --- a/drivers/net/ethernet/sfc/ef10_sriov.c +++ b/drivers/net/ethernet/sfc/ef10_sriov.c @@ -117,6 +117,24 @@ static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id) NULL, 0, NULL); } +static int efx_ef10_vadaptor_alloc(struct efx_nic *efx, unsigned int port_id) +{ + MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_ALLOC_IN_LEN); + + MCDI_SET_DWORD(inbuf, VADAPTOR_ALLOC_IN_UPSTREAM_PORT_ID, port_id); + return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_ALLOC, inbuf, sizeof(inbuf), + NULL, 0, NULL); +} + +static int efx_ef10_vadaptor_free(struct efx_nic *efx, unsigned int port_id) +{ + MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_FREE_IN_LEN); + + MCDI_SET_DWORD(inbuf, VADAPTOR_FREE_IN_UPSTREAM_PORT_ID, port_id); + return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_FREE, inbuf, sizeof(inbuf), + NULL, 0, NULL); +} + static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx) { struct efx_ef10_nic_data *nic_data = efx->nic_data; @@ -231,14 +249,17 @@ fail: /* On top of the default firmware vswitch setup, create a VEB vswitch and * expansion vport for use by this function. */ -int efx_ef10_vswitching_probe(struct efx_nic *efx) +int efx_ef10_vswitching_probe_pf(struct efx_nic *efx) { struct efx_ef10_nic_data *nic_data = efx->nic_data; struct net_device *net_dev = efx->net_dev; int rc; - if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) - return 0; /* vswitch not needed as we have no VFs */ + if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) { + /* vswitch not needed as we have no VFs */ + efx_ef10_vadaptor_alloc(efx, nic_data->vport_id); + return 0; + } rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED, MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB); @@ -254,10 +275,16 @@ int efx_ef10_vswitching_probe(struct efx_nic *efx) rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr); if (rc) goto fail3; - ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr); + rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id); + if (rc) + goto fail4; + return 0; +fail4: + efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac); + eth_zero_addr(nic_data->vport_mac); fail3: efx_ef10_vport_free(efx, nic_data->vport_id); nic_data->vport_id = EVB_PORT_ID_ASSIGNED; @@ -267,7 +294,14 @@ fail1: return rc; } -int efx_ef10_vswitching_restore(struct efx_nic *efx) +int efx_ef10_vswitching_probe_vf(struct efx_nic *efx) +{ + struct efx_ef10_nic_data *nic_data = efx->nic_data; + + return efx_ef10_vadaptor_alloc(efx, nic_data->vport_id); +} + +int efx_ef10_vswitching_restore_pf(struct efx_nic *efx) { struct efx_ef10_nic_data *nic_data = efx->nic_data; int rc; @@ -275,7 +309,7 @@ int efx_ef10_vswitching_restore(struct efx_nic *efx) if (!nic_data->must_probe_vswitching) return 0; - rc = efx_ef10_vswitching_probe(efx); + rc = efx_ef10_vswitching_probe_pf(efx); if (rc) goto fail; @@ -288,12 +322,30 @@ fail: return rc; } -void efx_ef10_vswitching_remove(struct efx_nic *efx) +int efx_ef10_vswitching_restore_vf(struct efx_nic *efx) +{ + struct efx_ef10_nic_data *nic_data = efx->nic_data; + int rc; + + if (!nic_data->must_probe_vswitching) + return 0; + + rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); + if (rc) + return rc; + + nic_data->must_probe_vswitching = false; + return 0; +} + +void efx_ef10_vswitching_remove_pf(struct efx_nic *efx) { struct efx_ef10_nic_data *nic_data = efx->nic_data; efx_ef10_sriov_free_vf_vswitching(efx); + efx_ef10_vadaptor_free(efx, nic_data->vport_id); + if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED) return; /* No vswitch was ever created */ @@ -308,6 +360,11 @@ void efx_ef10_vswitching_remove(struct efx_nic *efx) efx_ef10_vswitch_free(efx, nic_data->vport_id); } +void efx_ef10_vswitching_remove_vf(struct efx_nic *efx) +{ + efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); +} + static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs) { int rc = 0; diff --git a/drivers/net/ethernet/sfc/ef10_sriov.h b/drivers/net/ethernet/sfc/ef10_sriov.h index 42d7145026a6..86bac7ebb01a 100644 --- a/drivers/net/ethernet/sfc/ef10_sriov.h +++ b/drivers/net/ethernet/sfc/ef10_sriov.h @@ -60,8 +60,11 @@ static inline int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf, return -EOPNOTSUPP; } -int efx_ef10_vswitching_probe(struct efx_nic *efx); -int efx_ef10_vswitching_restore(struct efx_nic *efx); -void efx_ef10_vswitching_remove(struct efx_nic *efx); +int efx_ef10_vswitching_probe_pf(struct efx_nic *efx); +int efx_ef10_vswitching_probe_vf(struct efx_nic *efx); +int efx_ef10_vswitching_restore_pf(struct efx_nic *efx); +int efx_ef10_vswitching_restore_vf(struct efx_nic *efx); +void efx_ef10_vswitching_remove_pf(struct efx_nic *efx); +void efx_ef10_vswitching_remove_vf(struct efx_nic *efx); #endif /* EF10_SRIOV_H */ -- 2.30.2