diff options
Diffstat (limited to 'drivers/net/ethernet/ibm/ibmvnic.c')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 753afda76296..2e6042409585 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -364,6 +364,25 @@ static void map_rxpool_buf_to_ltb(struct ibmvnic_rx_pool *rxpool, *offset = bufidx * rxpool->buff_size; } +/** + * map_txpool_buf_to_ltb - Map given txpool buffer to offset in an LTB. + * @txpool: The transmit buffer pool containing buffer + * @bufidx: Index of buffer in txpool + * @ltbp: (Output) pointer to the long term buffer (LTB) containing the buffer + * @offset: (Output) offset of buffer in the LTB from @ltbp + * + * Map the given buffer identified by [txpool, bufidx] to an LTB in the + * pool and its corresponding offset. + */ +static void map_txpool_buf_to_ltb(struct ibmvnic_tx_pool *txpool, + unsigned int bufidx, + struct ibmvnic_long_term_buff **ltbp, + unsigned int *offset) +{ + *ltbp = &txpool->long_term_buff; + *offset = bufidx * txpool->buf_size; +} + static void deactivate_rx_pools(struct ibmvnic_adapter *adapter) { int i; @@ -1931,6 +1950,7 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) struct ibmvnic_ind_xmit_queue *ind_bufp; struct ibmvnic_tx_buff *tx_buff = NULL; struct ibmvnic_sub_crq_queue *tx_scrq; + struct ibmvnic_long_term_buff *ltb; struct ibmvnic_tx_pool *tx_pool; unsigned int tx_send_failed = 0; netdev_tx_t ret = NETDEV_TX_OK; @@ -1993,10 +2013,11 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP; - offset = bufidx * tx_pool->buf_size; - dst = tx_pool->long_term_buff.buff + offset; + map_txpool_buf_to_ltb(tx_pool, bufidx, <b, &offset); + + dst = ltb->buff + offset; memset(dst, 0, tx_pool->buf_size); - data_dma_addr = tx_pool->long_term_buff.addr + offset; + data_dma_addr = ltb->addr + offset; if (skb_shinfo(skb)->nr_frags) { int cur, i; @@ -2040,7 +2061,7 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) cpu_to_be32(bufidx | IBMVNIC_TSO_POOL_MASK); else tx_crq.v1.correlator = cpu_to_be32(bufidx); - tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); + tx_crq.v1.dma_reg = cpu_to_be16(ltb->map_id); tx_crq.v1.sge_len = cpu_to_be32(skb->len); tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); |