iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ibmvnic: rename local variable index to bufidx

Browse Source 
The local variable 'index' is heavily used in some functions and is
confusing with the presence of other "index" fields like pool->index,
->consumer_index, etc. Rename it to bufidx to better reflect that its
the index of a buffer in the pool.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Sukadev Bhattiprolu 2022-04-13 13:10:21 -04:00 committed by Jakub Kicinski
parent 7b05c54226
commit 8880fc669d
1 changed files with 22 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/net/ethernet/ibm/ibmvnic.c
View File

@ -369,7 +369,7 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
dma_addr_t dma_addr;
unsigned char *dst;
int shift = 0;
int index;
int bufidx;
int i;
if (!pool->active)
@ -385,14 +385,14 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
* be 0.
*/
for (i = ind_bufp->index; i < count; ++i) {
index = pool->free_map[pool->next_free];
bufidx = pool->free_map[pool->next_free];
/* We maybe reusing the skb from earlier resets. Allocate
* only if necessary. But since the LTB may have changed
* during reset (see init_rx_pools()), update LTB below
* even if reusing skb.
*/
skb = pool->rx_buff[index].skb;
skb = pool->rx_buff[bufidx].skb;
if (!skb) {
skb = netdev_alloc_skb(adapter->netdev,
pool->buff_size);
@ -407,24 +407,24 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
pool->next_free = (pool->next_free + 1) % pool->size;
/* Copy the skb to the long term mapped DMA buffer */
offset = index * pool->buff_size;
offset = bufidx * pool->buff_size;
dst = pool->long_term_buff.buff + offset;
memset(dst, 0, pool->buff_size);
dma_addr = pool->long_term_buff.addr + offset;
/* add the skb to an rx_buff in the pool */
pool->rx_buff[index].data = dst;
pool->rx_buff[index].dma = dma_addr;
pool->rx_buff[index].skb = skb;
pool->rx_buff[index].pool_index = pool->index;
pool->rx_buff[index].size = pool->buff_size;
pool->rx_buff[bufidx].data = dst;
pool->rx_buff[bufidx].dma = dma_addr;
pool->rx_buff[bufidx].skb = skb;
pool->rx_buff[bufidx].pool_index = pool->index;
pool->rx_buff[bufidx].size = pool->buff_size;
/* queue the rx_buff for the next send_subcrq_indirect */
sub_crq = &ind_bufp->indir_arr[ind_bufp->index++];
memset(sub_crq, 0, sizeof(*sub_crq));
sub_crq->rx_add.first = IBMVNIC_CRQ_CMD;
sub_crq->rx_add.correlator =
cpu_to_be64((u64)&pool->rx_buff[index]);
cpu_to_be64((u64)&pool->rx_buff[bufidx]);
sub_crq->rx_add.ioba = cpu_to_be32(dma_addr);
sub_crq->rx_add.map_id = pool->long_term_buff.map_id;
@ -466,10 +466,10 @@ failure:
sub_crq = &ind_bufp->indir_arr[i];
rx_buff = (struct ibmvnic_rx_buff *)
be64_to_cpu(sub_crq->rx_add.correlator);
index = (int)(rx_buff - pool->rx_buff);
pool->free_map[pool->next_free] = index;
dev_kfree_skb_any(pool->rx_buff[index].skb);
pool->rx_buff[index].skb = NULL;
bufidx = (int)(rx_buff - pool->rx_buff);
pool->free_map[pool->next_free] = bufidx;
dev_kfree_skb_any(pool->rx_buff[bufidx].skb);
pool->rx_buff[bufidx].skb = NULL;
}
adapter->replenish_add_buff_failure += ind_bufp->index;
atomic_add(buffers_added, &pool->available);
@ -1926,7 +1926,7 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
unsigned int offset;
int num_entries = 1;
unsigned char *dst;
int index = 0;
int bufidx = 0;
u8 proto = 0;
/* If a reset is in progress, drop the packet since
@ -1960,9 +1960,9 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
else
tx_pool = &adapter->tx_pool[queue_num];
index = tx_pool->free_map[tx_pool->consumer_index];
bufidx = tx_pool->free_map[tx_pool->consumer_index];
if (index == IBMVNIC_INVALID_MAP) {
if (bufidx == IBMVNIC_INVALID_MAP) {
dev_kfree_skb_any(skb);
tx_send_failed++;
tx_dropped++;
@ -1973,7 +1973,7 @@ 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 = index * tx_pool->buf_size;
offset = bufidx * tx_pool->buf_size;
dst = tx_pool->long_term_buff.buff + offset;
memset(dst, 0, tx_pool->buf_size);
data_dma_addr = tx_pool->long_term_buff.addr + offset;
@ -2003,9 +2003,9 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
tx_pool->consumer_index =
(tx_pool->consumer_index + 1) % tx_pool->num_buffers;
tx_buff = &tx_pool->tx_buff[index];
tx_buff = &tx_pool->tx_buff[bufidx];
tx_buff->skb = skb;
tx_buff->index = index;
tx_buff->index = bufidx;
tx_buff->pool_index = queue_num;
memset(&tx_crq, 0, sizeof(tx_crq));
@ -2017,9 +2017,9 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
if (skb_is_gso(skb))
tx_crq.v1.correlator =
cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK);
cpu_to_be32(bufidx | IBMVNIC_TSO_POOL_MASK);
else
tx_crq.v1.correlator = cpu_to_be32(index);
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.sge_len = cpu_to_be32(skb->len);
tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);