diff options
Diffstat (limited to 'drivers/net/ethernet/ibm')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmveth.c | 145 | ||||
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmveth.h | 18 |
2 files changed, 135 insertions, 28 deletions
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c index 29bbb628d..7af870a3c 100644 --- a/drivers/net/ethernet/ibm/ibmveth.c +++ b/drivers/net/ethernet/ibm/ibmveth.c @@ -79,6 +79,11 @@ static unsigned int rx_flush __read_mostly = 0; module_param(rx_flush, uint, 0644); MODULE_PARM_DESC(rx_flush, "Flush receive buffers before use"); +static bool old_large_send __read_mostly; +module_param(old_large_send, bool, S_IRUGO); +MODULE_PARM_DESC(old_large_send, + "Use old large send method on firmware that supports the new method"); + struct ibmveth_stat { char name[ETH_GSTRING_LEN]; int offset; @@ -101,7 +106,8 @@ struct ibmveth_stat ibmveth_stats[] = { { "fw_enabled_ipv4_csum", IBMVETH_STAT_OFF(fw_ipv4_csum_support) }, { "fw_enabled_ipv6_csum", IBMVETH_STAT_OFF(fw_ipv6_csum_support) }, { "tx_large_packets", IBMVETH_STAT_OFF(tx_large_packets) }, - { "rx_large_packets", IBMVETH_STAT_OFF(rx_large_packets) } + { "rx_large_packets", IBMVETH_STAT_OFF(rx_large_packets) }, + { "fw_enabled_large_send", IBMVETH_STAT_OFF(fw_large_send_support) } }; /* simple methods of getting data from the current rxq entry */ @@ -848,25 +854,91 @@ static int ibmveth_set_csum_offload(struct net_device *dev, u32 data) return rc1 ? rc1 : rc2; } +static int ibmveth_set_tso(struct net_device *dev, u32 data) +{ + struct ibmveth_adapter *adapter = netdev_priv(dev); + unsigned long set_attr, clr_attr, ret_attr; + long ret1, ret2; + int rc1 = 0, rc2 = 0; + int restart = 0; + + if (netif_running(dev)) { + restart = 1; + adapter->pool_config = 1; + ibmveth_close(dev); + adapter->pool_config = 0; + } + + set_attr = 0; + clr_attr = 0; + + if (data) + set_attr = IBMVETH_ILLAN_LRG_SR_ENABLED; + else + clr_attr = IBMVETH_ILLAN_LRG_SR_ENABLED; + + ret1 = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); + + if (ret1 == H_SUCCESS && (ret_attr & IBMVETH_ILLAN_LRG_SND_SUPPORT) && + !old_large_send) { + ret2 = h_illan_attributes(adapter->vdev->unit_address, clr_attr, + set_attr, &ret_attr); + + if (ret2 != H_SUCCESS) { + netdev_err(dev, "unable to change tso settings. %d rc=%ld\n", + data, ret2); + + h_illan_attributes(adapter->vdev->unit_address, + set_attr, clr_attr, &ret_attr); + + if (data == 1) + dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); + rc1 = -EIO; + + } else { + adapter->fw_large_send_support = data; + adapter->large_send = data; + } + } else { + /* Older firmware version of large send offload does not + * support tcp6/ipv6 + */ + if (data == 1) { + dev->features &= ~NETIF_F_TSO6; + netdev_info(dev, "TSO feature requires all partitions to have updated driver"); + } + adapter->large_send = data; + } + + if (restart) + rc2 = ibmveth_open(dev); + + return rc1 ? rc1 : rc2; +} + static int ibmveth_set_features(struct net_device *dev, netdev_features_t features) { struct ibmveth_adapter *adapter = netdev_priv(dev); int rx_csum = !!(features & NETIF_F_RXCSUM); - int rc; - netdev_features_t changed = features ^ dev->features; - - if (features & NETIF_F_TSO & changed) - netdev_info(dev, "TSO feature requires all partitions to have updated driver"); + int large_send = !!(features & (NETIF_F_TSO | NETIF_F_TSO6)); + int rc1 = 0, rc2 = 0; - if (rx_csum == adapter->rx_csum) - return 0; + if (rx_csum != adapter->rx_csum) { + rc1 = ibmveth_set_csum_offload(dev, rx_csum); + if (rc1 && !adapter->rx_csum) + dev->features = + features & ~(NETIF_F_ALL_CSUM | NETIF_F_RXCSUM); + } - rc = ibmveth_set_csum_offload(dev, rx_csum); - if (rc && !adapter->rx_csum) - dev->features = features & ~(NETIF_F_ALL_CSUM | NETIF_F_RXCSUM); + if (large_send != adapter->large_send) { + rc2 = ibmveth_set_tso(dev, large_send); + if (rc2 && !adapter->large_send) + dev->features = + features & ~(NETIF_F_TSO | NETIF_F_TSO6); + } - return rc; + return rc1 ? rc1 : rc2; } static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) @@ -917,7 +989,7 @@ static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) static int ibmveth_send(struct ibmveth_adapter *adapter, - union ibmveth_buf_desc *descs) + union ibmveth_buf_desc *descs, unsigned long mss) { unsigned long correlator; unsigned int retry_count; @@ -934,7 +1006,8 @@ static int ibmveth_send(struct ibmveth_adapter *adapter, descs[0].desc, descs[1].desc, descs[2].desc, descs[3].desc, descs[4].desc, descs[5].desc, - correlator, &correlator); + correlator, &correlator, mss, + adapter->fw_large_send_support); } while ((ret == H_BUSY) && (retry_count--)); if (ret != H_SUCCESS && ret != H_DROPPED) { @@ -955,6 +1028,7 @@ static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, int last, i; int force_bounce = 0; dma_addr_t dma_addr; + unsigned long mss = 0; /* * veth handles a maximum of 6 segments including the header, so @@ -980,6 +1054,9 @@ static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, desc_flags = IBMVETH_BUF_VALID; + if (skb_is_gso(skb) && adapter->fw_large_send_support) + desc_flags |= IBMVETH_BUF_LRG_SND; + if (skb->ip_summed == CHECKSUM_PARTIAL) { unsigned char *buf = skb_transport_header(skb) + skb->csum_offset; @@ -1007,7 +1084,7 @@ retry_bounce: descs[0].fields.flags_len = desc_flags | skb->len; descs[0].fields.address = adapter->bounce_buffer_dma; - if (ibmveth_send(adapter, descs)) { + if (ibmveth_send(adapter, descs, 0)) { adapter->tx_send_failed++; netdev->stats.tx_dropped++; } else { @@ -1041,16 +1118,23 @@ retry_bounce: descs[i+1].fields.address = dma_addr; } - if (skb_is_gso(skb) && !skb_is_gso_v6(skb)) { - /* Put -1 in the IP checksum to tell phyp it - * is a largesend packet and put the mss in the TCP checksum. - */ - ip_hdr(skb)->check = 0xffff; - tcp_hdr(skb)->check = cpu_to_be16(skb_shinfo(skb)->gso_size); - adapter->tx_large_packets++; + if (skb_is_gso(skb)) { + if (adapter->fw_large_send_support) { + mss = (unsigned long)skb_shinfo(skb)->gso_size; + adapter->tx_large_packets++; + } else if (!skb_is_gso_v6(skb)) { + /* Put -1 in the IP checksum to tell phyp it + * is a largesend packet. Put the mss in + * the TCP checksum. + */ + ip_hdr(skb)->check = 0xffff; + tcp_hdr(skb)->check = + cpu_to_be16(skb_shinfo(skb)->gso_size); + adapter->tx_large_packets++; + } } - if (ibmveth_send(adapter, descs)) { + if (ibmveth_send(adapter, descs, mss)) { adapter->tx_send_failed++; netdev->stats.tx_dropped++; } else { @@ -1401,6 +1485,8 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) struct ibmveth_adapter *adapter; unsigned char *mac_addr_p; unsigned int *mcastFilterSize_p; + long ret; + unsigned long ret_attr; dev_dbg(&dev->dev, "entering ibmveth_probe for UA 0x%x\n", dev->unit_address); @@ -1449,10 +1535,19 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) SET_NETDEV_DEV(netdev, &dev->dev); netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + netdev->features |= netdev->hw_features; - /* TSO is disabled by default */ - netdev->hw_features |= NETIF_F_TSO; + ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); + + /* If running older firmware, TSO should not be enabled by default */ + if (ret == H_SUCCESS && (ret_attr & IBMVETH_ILLAN_LRG_SND_SUPPORT) && + !old_large_send) { + netdev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; + netdev->features |= netdev->hw_features; + } else { + netdev->hw_features |= NETIF_F_TSO; + } memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN); diff --git a/drivers/net/ethernet/ibm/ibmveth.h b/drivers/net/ethernet/ibm/ibmveth.h index 41dedb1fb..4eade67fe 100644 --- a/drivers/net/ethernet/ibm/ibmveth.h +++ b/drivers/net/ethernet/ibm/ibmveth.h @@ -40,6 +40,8 @@ #define IbmVethMcastRemoveFilter 0x2UL #define IbmVethMcastClearFilterTable 0x3UL +#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL +#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL #define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL #define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL #define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL @@ -59,13 +61,20 @@ static inline long h_send_logical_lan(unsigned long unit_address, unsigned long desc1, unsigned long desc2, unsigned long desc3, unsigned long desc4, unsigned long desc5, unsigned long desc6, - unsigned long corellator_in, unsigned long *corellator_out) + unsigned long corellator_in, unsigned long *corellator_out, + unsigned long mss, unsigned long large_send_support) { long rc; unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; - rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1, - desc2, desc3, desc4, desc5, desc6, corellator_in); + if (large_send_support) + rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, + desc1, desc2, desc3, desc4, desc5, desc6, + corellator_in, mss); + else + rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, + desc1, desc2, desc3, desc4, desc5, desc6, + corellator_in); *corellator_out = retbuf[0]; @@ -147,11 +156,13 @@ struct ibmveth_adapter { struct ibmveth_rx_q rx_queue; int pool_config; int rx_csum; + int large_send; void *bounce_buffer; dma_addr_t bounce_buffer_dma; u64 fw_ipv6_csum_support; u64 fw_ipv4_csum_support; + u64 fw_large_send_support; /* adapter specific stats */ u64 replenish_task_cycles; u64 replenish_no_mem; @@ -182,6 +193,7 @@ struct ibmveth_buf_desc_fields { #endif #define IBMVETH_BUF_VALID 0x80000000 #define IBMVETH_BUF_TOGGLE 0x40000000 +#define IBMVETH_BUF_LRG_SND 0x04000000 #define IBMVETH_BUF_NO_CSUM 0x02000000 #define IBMVETH_BUF_CSUM_GOOD 0x01000000 #define IBMVETH_BUF_LEN_MASK 0x00FFFFFF |