diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 56 | ||||
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.h | 5 |
2 files changed, 53 insertions, 8 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index b508877397e1..aedb81c230a6 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -553,6 +553,10 @@ static int reset_tx_pools(struct ibmvnic_adapter *adapter) if (rc) return rc; + rc = reset_long_term_buff(adapter, &tx_pool->tso_ltb); + if (rc) + return rc; + memset(tx_pool->tx_buff, 0, adapter->req_tx_entries_per_subcrq * sizeof(struct ibmvnic_tx_buff)); @@ -562,6 +566,7 @@ static int reset_tx_pools(struct ibmvnic_adapter *adapter) tx_pool->consumer_index = 0; tx_pool->producer_index = 0; + tx_pool->tso_index = 0; } return 0; @@ -581,6 +586,7 @@ static void release_tx_pools(struct ibmvnic_adapter *adapter) tx_pool = &adapter->tx_pool[i]; kfree(tx_pool->tx_buff); free_long_term_buff(adapter, &tx_pool->long_term_buff); + free_long_term_buff(adapter, &tx_pool->tso_ltb); kfree(tx_pool->free_map); } @@ -625,6 +631,16 @@ static int init_tx_pools(struct net_device *netdev) return -1; } + /* alloc TSO ltb */ + if (alloc_long_term_buff(adapter, &tx_pool->tso_ltb, + IBMVNIC_TSO_BUFS * + IBMVNIC_TSO_BUF_SZ)) { + release_tx_pools(adapter); + return -1; + } + + tx_pool->tso_index = 0; + tx_pool->free_map = kcalloc(adapter->req_tx_entries_per_subcrq, sizeof(int), GFP_KERNEL); if (!tx_pool->free_map) { @@ -1201,10 +1217,21 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs)); index = tx_pool->free_map[tx_pool->consumer_index]; - offset = index * adapter->req_mtu; - dst = tx_pool->long_term_buff.buff + offset; - memset(dst, 0, adapter->req_mtu); - data_dma_addr = tx_pool->long_term_buff.addr + offset; + + if (skb_is_gso(skb)) { + offset = tx_pool->tso_index * IBMVNIC_TSO_BUF_SZ; + dst = tx_pool->tso_ltb.buff + offset; + memset(dst, 0, IBMVNIC_TSO_BUF_SZ); + data_dma_addr = tx_pool->tso_ltb.addr + offset; + tx_pool->tso_index++; + if (tx_pool->tso_index == IBMVNIC_TSO_BUFS) + tx_pool->tso_index = 0; + } else { + offset = index * adapter->req_mtu; + dst = tx_pool->long_term_buff.buff + offset; + memset(dst, 0, adapter->req_mtu); + data_dma_addr = tx_pool->long_term_buff.addr + offset; + } if (skb_shinfo(skb)->nr_frags) { int cur, i; @@ -1245,7 +1272,10 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) tx_crq.v1.n_sge = 1; tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; tx_crq.v1.correlator = cpu_to_be32(index); - tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); + if (skb_is_gso(skb)) + tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->tso_ltb.map_id); + else + tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); tx_crq.v1.sge_len = cpu_to_be32(skb->len); tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); @@ -1270,6 +1300,11 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; hdrs += 2; } + if (skb_is_gso(skb)) { + tx_crq.v1.flags1 |= IBMVNIC_TX_LSO; + tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size); + hdrs += 2; + } /* determine if l2/3/4 headers are sent to firmware */ if ((*hdrs >> 7) & 1 && (skb->protocol == htons(ETH_P_IP) || @@ -2960,10 +2995,10 @@ static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; + adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4; + adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6; - /* large_tx/rx disabled for now, additional features needed */ - adapter->ip_offload_ctrl.large_tx_ipv4 = 0; - adapter->ip_offload_ctrl.large_tx_ipv6 = 0; + /* large_rx disabled for now, additional features needed */ adapter->ip_offload_ctrl.large_rx_ipv4 = 0; adapter->ip_offload_ctrl.large_rx_ipv6 = 0; @@ -2979,6 +3014,11 @@ static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) adapter->netdev->features |= NETIF_F_RXCSUM; + if (buf->large_tx_ipv4) + adapter->netdev->features |= NETIF_F_TSO; + if (buf->large_tx_ipv6) + adapter->netdev->features |= NETIF_F_TSO6; + memset(&crq, 0, sizeof(crq)); crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index d02257ccc377..7aa347a21e78 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -39,6 +39,9 @@ #define IBMVNIC_BUFFS_PER_POOL 100 #define IBMVNIC_MAX_TX_QUEUES 5 +#define IBMVNIC_TSO_BUF_SZ 65536 +#define IBMVNIC_TSO_BUFS 64 + struct ibmvnic_login_buffer { __be32 len; __be32 version; @@ -896,6 +899,8 @@ struct ibmvnic_tx_pool { wait_queue_head_t ibmvnic_tx_comp_q; struct task_struct *work_thread; struct ibmvnic_long_term_buff long_term_buff; + struct ibmvnic_long_term_buff tso_ltb; + int tso_index; }; struct ibmvnic_rx_buff { |