diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 156 |
1 files changed, 118 insertions, 38 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 3269b059762e..2e8416560632 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -1550,7 +1550,7 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi, */ qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix); num_tc_qps = qcount / numtc; - num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC); + num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf)); /* Setup queue offset/count for all TCs for given VSI */ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { @@ -7469,62 +7469,139 @@ static int i40e_setup_misc_vector(struct i40e_pf *pf) } /** - * i40e_config_rss - Prepare for RSS if used + * i40e_config_rss_aq - Prepare for RSS using AQ commands + * @vsi: vsi structure + * @seed: RSS hash seed + **/ +static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed) +{ + struct i40e_aqc_get_set_rss_key_data rss_key; + struct i40e_pf *pf = vsi->back; + struct i40e_hw *hw = &pf->hw; + bool pf_lut = false; + u8 *rss_lut; + int ret, i; + + memset(&rss_key, 0, sizeof(rss_key)); + memcpy(&rss_key, seed, sizeof(rss_key)); + + rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL); + if (!rss_lut) + return -ENOMEM; + + /* Populate the LUT with max no. of queues in round robin fashion */ + for (i = 0; i < vsi->rss_table_size; i++) + rss_lut[i] = i % vsi->rss_size; + + ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key); + if (ret) { + dev_info(&pf->pdev->dev, + "Cannot set RSS key, err %s aq_err %s\n", + i40e_stat_str(&pf->hw, ret), + i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); + return ret; + } + + if (vsi->type == I40E_VSI_MAIN) + pf_lut = true; + + ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut, + vsi->rss_table_size); + if (ret) + dev_info(&pf->pdev->dev, + "Cannot set RSS lut, err %s aq_err %s\n", + i40e_stat_str(&pf->hw, ret), + i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); + + return ret; +} + +/** + * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used + * @vsi: VSI structure + **/ +static int i40e_vsi_config_rss(struct i40e_vsi *vsi) +{ + u8 seed[I40E_HKEY_ARRAY_SIZE]; + struct i40e_pf *pf = vsi->back; + + netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE); + vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs); + + if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) + return i40e_config_rss_aq(vsi, seed); + + return 0; +} + +/** + * i40e_config_rss_reg - Prepare for RSS if used * @pf: board private structure + * @seed: RSS hash seed **/ -static int i40e_config_rss(struct i40e_pf *pf) +static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed) { - u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1]; struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; struct i40e_hw *hw = &pf->hw; + u32 *seed_dw = (u32 *)seed; + u32 current_queue = 0; u32 lut = 0; int i, j; - u64 hena; - u32 reg_val; - netdev_rss_key_fill(rss_key, sizeof(rss_key)); + /* Fill out hash function seed */ for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++) - wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]); + wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]); + + for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) { + lut = 0; + for (j = 0; j < 4; j++) { + if (current_queue == vsi->rss_size) + current_queue = 0; + lut |= ((current_queue) << (8 * j)); + current_queue++; + } + wr32(&pf->hw, I40E_PFQF_HLUT(i), lut); + } + i40e_flush(hw); + + return 0; +} + +/** + * i40e_config_rss - Prepare for RSS if used + * @pf: board private structure + **/ +static int i40e_config_rss(struct i40e_pf *pf) +{ + struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; + u8 seed[I40E_HKEY_ARRAY_SIZE]; + struct i40e_hw *hw = &pf->hw; + u32 reg_val; + u64 hena; + + netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE); /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */ hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) | ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32); - hena |= I40E_DEFAULT_RSS_HENA; + hena |= i40e_pf_get_default_rss_hena(pf); + wr32(hw, I40E_PFQF_HENA(0), (u32)hena); wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs); - /* Check capability and Set table size and register per hw expectation*/ + /* Determine the RSS table size based on the hardware capabilities */ reg_val = rd32(hw, I40E_PFQF_CTL_0); - if (pf->rss_table_size == 512) - reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512; - else - reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512; + reg_val = (pf->rss_table_size == 512) ? + (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) : + (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512); wr32(hw, I40E_PFQF_CTL_0, reg_val); - /* Populate the LUT with max no. of queues in round robin fashion */ - for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) { - - /* The assumption is that lan qp count will be the highest - * qp count for any PF VSI that needs RSS. - * If multiple VSIs need RSS support, all the qp counts - * for those VSIs should be a power of 2 for RSS to work. - * If LAN VSI is the only consumer for RSS then this requirement - * is not necessary. - */ - if (j == vsi->rss_size) - j = 0; - /* lut = 4-byte sliding window of 4 lut entries */ - lut = (lut << 8) | (j & - (BIT(pf->hw.func_caps.rss_table_entry_width) - 1)); - /* On i = 3, we have 4 entries in lut; write to the register */ - if ((i & 3) == 3) - wr32(hw, I40E_PFQF_HLUT(i >> 2), lut); - } - i40e_flush(hw); - - return 0; + if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) + return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed); + else + return i40e_config_rss_reg(pf, seed); } /** @@ -7765,9 +7842,8 @@ static int i40e_sw_init(struct i40e_pf *pf) } if (pf->hw.func_caps.vmdq) { - pf->flags |= I40E_FLAG_VMDQ_ENABLED; pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI; - pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ; + pf->flags |= I40E_FLAG_VMDQ_ENABLED; } #ifdef I40E_FCOE @@ -8948,6 +9024,10 @@ struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type, break; } + if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) && + (vsi->type == I40E_VSI_VMDQ2)) { + ret = i40e_vsi_config_rss(vsi); + } return vsi; err_rings: |