static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i) { int idx = 0, j; buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i)); for (j = 0; j < 10; j++) buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j)); for (j = 0; j < 32; j++) buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j)); BUG_ON(idx != FM10K_REGS_LEN_VSI); }
static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface, struct ethtool_rxnfc *nfc) { u32 flags = interface->flags; /* RSS does not support anything other than hashing * to queues on src and dst IPs and ports */ if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) return -EINVAL; switch (nfc->flow_type) { case TCP_V4_FLOW: case TCP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST) || !(nfc->data & RXH_L4_B_0_1) || !(nfc->data & RXH_L4_B_2_3)) return -EINVAL; break; case UDP_V4_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST)) return -EINVAL; switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { case 0: flags &= ~FM10K_FLAG_RSS_FIELD_IPV4_UDP; break; case (RXH_L4_B_0_1 | RXH_L4_B_2_3): flags |= FM10K_FLAG_RSS_FIELD_IPV4_UDP; break; default: return -EINVAL; } break; case UDP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST)) return -EINVAL; switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { case 0: flags &= ~FM10K_FLAG_RSS_FIELD_IPV6_UDP; break; case (RXH_L4_B_0_1 | RXH_L4_B_2_3): flags |= FM10K_FLAG_RSS_FIELD_IPV6_UDP; break; default: return -EINVAL; } break; case AH_ESP_V4_FLOW: case AH_V4_FLOW: case ESP_V4_FLOW: case SCTP_V4_FLOW: case AH_ESP_V6_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case SCTP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST) || (nfc->data & RXH_L4_B_0_1) || (nfc->data & RXH_L4_B_2_3)) return -EINVAL; break; default: return -EINVAL; } /* if we changed something we need to update flags */ if (flags != interface->flags) { struct fm10k_hw *hw = &interface->hw; u32 mrqc; if ((flags & UDP_RSS_FLAGS) && !(interface->flags & UDP_RSS_FLAGS)) netif_warn(interface, drv, interface->netdev, "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n"); interface->flags = flags; /* Perform hash on these packet types */ mrqc = FM10K_MRQC_IPV4 | FM10K_MRQC_TCP_IPV4 | FM10K_MRQC_IPV6 | FM10K_MRQC_TCP_IPV6; if (flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP) mrqc |= FM10K_MRQC_UDP_IPV4; if (flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP) mrqc |= FM10K_MRQC_UDP_IPV6; fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); } return 0; }
static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface, struct ethtool_rxnfc *nfc) { int rss_ipv4_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags); int rss_ipv6_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags); /* RSS does not support anything other than hashing * to queues on src and dst IPs and ports */ if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) return -EINVAL; switch (nfc->flow_type) { case TCP_V4_FLOW: case TCP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST) || !(nfc->data & RXH_L4_B_0_1) || !(nfc->data & RXH_L4_B_2_3)) return -EINVAL; break; case UDP_V4_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST)) return -EINVAL; switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { case 0: clear_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags); break; case (RXH_L4_B_0_1 | RXH_L4_B_2_3): set_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags); break; default: return -EINVAL; } break; case UDP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST)) return -EINVAL; switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { case 0: clear_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags); break; case (RXH_L4_B_0_1 | RXH_L4_B_2_3): set_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags); break; default: return -EINVAL; } break; case AH_ESP_V4_FLOW: case AH_V4_FLOW: case ESP_V4_FLOW: case SCTP_V4_FLOW: case AH_ESP_V6_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case SCTP_V6_FLOW: if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST) || (nfc->data & RXH_L4_B_0_1) || (nfc->data & RXH_L4_B_2_3)) return -EINVAL; break; default: return -EINVAL; } /* If something changed we need to update the MRQC register. Note that * test_bit() is guaranteed to return strictly 0 or 1, so testing for * equality is safe. */ if ((rss_ipv4_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags)) || (rss_ipv6_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags))) { struct fm10k_hw *hw = &interface->hw; bool warn = false; u32 mrqc; /* Perform hash on these packet types */ mrqc = FM10K_MRQC_IPV4 | FM10K_MRQC_TCP_IPV4 | FM10K_MRQC_IPV6 | FM10K_MRQC_TCP_IPV6; if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags)) { mrqc |= FM10K_MRQC_UDP_IPV4; warn = true; } if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags)) { mrqc |= FM10K_MRQC_UDP_IPV6; warn = true; } /* If we enable UDP RSS display a warning that this may cause * fragmented UDP packets to arrive out of order. */ if (warn) netif_warn(interface, drv, interface->netdev, "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n"); fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); } return 0; }