return status;
}
+static inline unsigned int ql_lbq_block_size(struct ql_adapter *qdev)
+{
+ return PAGE_SIZE << qdev->lbq_buf_order;
+}
+
/* Get the next large buffer. */
static struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
{
return lbq_desc;
}
+static struct bq_desc *ql_get_curr_lchunk(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ struct bq_desc *lbq_desc = ql_get_curr_lbuf(rx_ring);
+
+ pci_dma_sync_single_for_cpu(qdev->pdev,
+ pci_unmap_addr(lbq_desc, mapaddr),
+ rx_ring->lbq_buf_size,
+ PCI_DMA_FROMDEVICE);
+
+ /* If it's the last chunk of our master page then
+ * we unmap it.
+ */
+ if ((lbq_desc->p.pg_chunk.offset + rx_ring->lbq_buf_size)
+ == ql_lbq_block_size(qdev))
+ pci_unmap_page(qdev->pdev,
+ lbq_desc->p.pg_chunk.map,
+ ql_lbq_block_size(qdev),
+ PCI_DMA_FROMDEVICE);
+ return lbq_desc;
+}
+
/* Get the next small buffer. */
static struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
{
ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
}
+static int ql_get_next_chunk(struct ql_adapter *qdev, struct rx_ring *rx_ring,
+ struct bq_desc *lbq_desc)
+{
+ if (!rx_ring->pg_chunk.page) {
+ u64 map;
+ rx_ring->pg_chunk.page = alloc_pages(__GFP_COLD | __GFP_COMP |
+ GFP_ATOMIC,
+ qdev->lbq_buf_order);
+ if (unlikely(!rx_ring->pg_chunk.page)) {
+ QPRINTK(qdev, DRV, ERR,
+ "page allocation failed.\n");
+ return -ENOMEM;
+ }
+ rx_ring->pg_chunk.offset = 0;
+ map = pci_map_page(qdev->pdev, rx_ring->pg_chunk.page,
+ 0, ql_lbq_block_size(qdev),
+ PCI_DMA_FROMDEVICE);
+ if (pci_dma_mapping_error(qdev->pdev, map)) {
+ __free_pages(rx_ring->pg_chunk.page,
+ qdev->lbq_buf_order);
+ QPRINTK(qdev, DRV, ERR,
+ "PCI mapping failed.\n");
+ return -ENOMEM;
+ }
+ rx_ring->pg_chunk.map = map;
+ rx_ring->pg_chunk.va = page_address(rx_ring->pg_chunk.page);
+ }
+
+ /* Copy the current master pg_chunk info
+ * to the current descriptor.
+ */
+ lbq_desc->p.pg_chunk = rx_ring->pg_chunk;
+
+ /* Adjust the master page chunk for next
+ * buffer get.
+ */
+ rx_ring->pg_chunk.offset += rx_ring->lbq_buf_size;
+ if (rx_ring->pg_chunk.offset == ql_lbq_block_size(qdev)) {
+ rx_ring->pg_chunk.page = NULL;
+ lbq_desc->p.pg_chunk.last_flag = 1;
+ } else {
+ rx_ring->pg_chunk.va += rx_ring->lbq_buf_size;
+ get_page(rx_ring->pg_chunk.page);
+ lbq_desc->p.pg_chunk.last_flag = 0;
+ }
+ return 0;
+}
/* Process (refill) a large buffer queue. */
static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
{
u64 map;
int i;
- while (rx_ring->lbq_free_cnt > 16) {
+ while (rx_ring->lbq_free_cnt > 32) {
for (i = 0; i < 16; i++) {
QPRINTK(qdev, RX_STATUS, DEBUG,
"lbq: try cleaning clean_idx = %d.\n",
clean_idx);
lbq_desc = &rx_ring->lbq[clean_idx];
- if (lbq_desc->p.lbq_page == NULL) {
- QPRINTK(qdev, RX_STATUS, DEBUG,
- "lbq: getting new page for index %d.\n",
- lbq_desc->index);
- lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
- if (lbq_desc->p.lbq_page == NULL) {
- rx_ring->lbq_clean_idx = clean_idx;
- QPRINTK(qdev, RX_STATUS, ERR,
- "Couldn't get a page.\n");
- return;
- }
- map = pci_map_page(qdev->pdev,
- lbq_desc->p.lbq_page,
- 0, PAGE_SIZE,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(qdev->pdev, map)) {
- rx_ring->lbq_clean_idx = clean_idx;
- put_page(lbq_desc->p.lbq_page);
- lbq_desc->p.lbq_page = NULL;
- QPRINTK(qdev, RX_STATUS, ERR,
- "PCI mapping failed.\n");
+ if (ql_get_next_chunk(qdev, rx_ring, lbq_desc)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Could not get a page chunk.\n");
return;
}
+
+ map = lbq_desc->p.pg_chunk.map +
+ lbq_desc->p.pg_chunk.offset;
pci_unmap_addr_set(lbq_desc, mapaddr, map);
- pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
+ pci_unmap_len_set(lbq_desc, maplen,
+ rx_ring->lbq_buf_size);
*lbq_desc->addr = cpu_to_le64(map);
- }
+
+ pci_dma_sync_single_for_device(qdev->pdev, map,
+ rx_ring->lbq_buf_size,
+ PCI_DMA_FROMDEVICE);
clean_idx++;
if (clean_idx == rx_ring->lbq_len)
clean_idx = 0;
* chain it to the header buffer's skb and let
* it rip.
*/
- lbq_desc = ql_get_curr_lbuf(rx_ring);
- pci_unmap_page(qdev->pdev,
- pci_unmap_addr(lbq_desc,
- mapaddr),
- pci_unmap_len(lbq_desc, maplen),
- PCI_DMA_FROMDEVICE);
+ lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
QPRINTK(qdev, RX_STATUS, DEBUG,
- "Chaining page to skb.\n");
- skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
- 0, length);
+ "Chaining page at offset = %d,"
+ "for %d bytes to skb.\n",
+ lbq_desc->p.pg_chunk.offset, length);
+ skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
+ lbq_desc->p.pg_chunk.offset,
+ length);
skb->len += length;
skb->data_len += length;
skb->truesize += length;
- lbq_desc->p.lbq_page = NULL;
} else {
/*
* The headers and data are in a single large buffer. We
* copy it to a new skb and let it go. This can happen with
* jumbo mtu on a non-TCP/UDP frame.
*/
- lbq_desc = ql_get_curr_lbuf(rx_ring);
+ lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
skb = netdev_alloc_skb(qdev->ndev, length);
if (skb == NULL) {
QPRINTK(qdev, PROBE, DEBUG,
skb_reserve(skb, NET_IP_ALIGN);
QPRINTK(qdev, RX_STATUS, DEBUG,
"%d bytes of headers and data in large. Chain page to new skb and pull tail.\n", length);
- skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
- 0, length);
+ skb_fill_page_desc(skb, 0,
+ lbq_desc->p.pg_chunk.page,
+ lbq_desc->p.pg_chunk.offset,
+ length);
skb->len += length;
skb->data_len += length;
skb->truesize += length;
length -= length;
- lbq_desc->p.lbq_page = NULL;
__pskb_pull_tail(skb,
(ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
VLAN_ETH_HLEN : ETH_HLEN);
* frames. If the MTU goes up we could
* eventually be in trouble.
*/
- int size, offset, i = 0;
- __le64 *bq, bq_array[8];
+ int size, i = 0;
sbq_desc = ql_get_curr_sbuf(rx_ring);
pci_unmap_single(qdev->pdev,
pci_unmap_addr(sbq_desc, mapaddr),
QPRINTK(qdev, RX_STATUS, DEBUG,
"%d bytes of headers & data in chain of large.\n", length);
skb = sbq_desc->p.skb;
- bq = &bq_array[0];
- memcpy(bq, skb->data, sizeof(bq_array));
sbq_desc->p.skb = NULL;
skb_reserve(skb, NET_IP_ALIGN);
- } else {
- QPRINTK(qdev, RX_STATUS, DEBUG,
- "Headers in small, %d bytes of data in chain of large.\n", length);
- bq = (__le64 *)sbq_desc->p.skb->data;
}
while (length > 0) {
- lbq_desc = ql_get_curr_lbuf(rx_ring);
- pci_unmap_page(qdev->pdev,
- pci_unmap_addr(lbq_desc,
- mapaddr),
- pci_unmap_len(lbq_desc,
- maplen),
- PCI_DMA_FROMDEVICE);
- size = (length < PAGE_SIZE) ? length : PAGE_SIZE;
- offset = 0;
+ lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
+ size = (length < rx_ring->lbq_buf_size) ? length :
+ rx_ring->lbq_buf_size;
QPRINTK(qdev, RX_STATUS, DEBUG,
"Adding page %d to skb for %d bytes.\n",
i, size);
- skb_fill_page_desc(skb, i, lbq_desc->p.lbq_page,
- offset, size);
+ skb_fill_page_desc(skb, i,
+ lbq_desc->p.pg_chunk.page,
+ lbq_desc->p.pg_chunk.offset,
+ size);
skb->len += size;
skb->data_len += size;
skb->truesize += size;
length -= size;
- lbq_desc->p.lbq_page = NULL;
- bq++;
i++;
}
__pskb_pull_tail(skb, (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
{
- int i;
struct bq_desc *lbq_desc;
- for (i = 0; i < rx_ring->lbq_len; i++) {
- lbq_desc = &rx_ring->lbq[i];
- if (lbq_desc->p.lbq_page) {
+ uint32_t curr_idx, clean_idx;
+
+ curr_idx = rx_ring->lbq_curr_idx;
+ clean_idx = rx_ring->lbq_clean_idx;
+ while (curr_idx != clean_idx) {
+ lbq_desc = &rx_ring->lbq[curr_idx];
+
+ if (lbq_desc->p.pg_chunk.last_flag) {
pci_unmap_page(qdev->pdev,
- pci_unmap_addr(lbq_desc, mapaddr),
- pci_unmap_len(lbq_desc, maplen),
+ lbq_desc->p.pg_chunk.map,
+ ql_lbq_block_size(qdev),
PCI_DMA_FROMDEVICE);
-
- put_page(lbq_desc->p.lbq_page);
- lbq_desc->p.lbq_page = NULL;
+ lbq_desc->p.pg_chunk.last_flag = 0;
}
+
+ put_page(lbq_desc->p.pg_chunk.page);
+ lbq_desc->p.pg_chunk.page = NULL;
+
+ if (++curr_idx == rx_ring->lbq_len)
+ curr_idx = 0;
+
}
}
/* Set up the shadow registers for this ring. */
rx_ring->prod_idx_sh_reg = shadow_reg;
rx_ring->prod_idx_sh_reg_dma = shadow_reg_dma;
+ *rx_ring->prod_idx_sh_reg = 0;
shadow_reg += sizeof(u64);
shadow_reg_dma += sizeof(u64);
rx_ring->lbq_base_indirect = shadow_reg;
struct rx_ring *rx_ring;
struct tx_ring *tx_ring;
int cpu_cnt = min(MAX_CPUS, (int)num_online_cpus());
+ unsigned int lbq_buf_len = (qdev->ndev->mtu > 1500) ?
+ LARGE_BUFFER_MAX_SIZE : LARGE_BUFFER_MIN_SIZE;
+
+ qdev->lbq_buf_order = get_order(lbq_buf_len);
/* In a perfect world we have one RSS ring for each CPU
* and each has it's own vector. To do that we ask for
rx_ring->lbq_len = NUM_LARGE_BUFFERS;
rx_ring->lbq_size =
rx_ring->lbq_len * sizeof(__le64);
- rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
+ rx_ring->lbq_buf_size = (u16)lbq_buf_len;
+ QPRINTK(qdev, IFUP, DEBUG,
+ "lbq_buf_size %d, order = %d\n",
+ rx_ring->lbq_buf_size, qdev->lbq_buf_order);
rx_ring->sbq_len = NUM_SMALL_BUFFERS;
rx_ring->sbq_size =
rx_ring->sbq_len * sizeof(__le64);
return err;
}
+static int ql_change_rx_buffers(struct ql_adapter *qdev)
+{
+ struct rx_ring *rx_ring;
+ int i, status;
+ u32 lbq_buf_len;
+
+ /* Wait for an oustanding reset to complete. */
+ if (!test_bit(QL_ADAPTER_UP, &qdev->flags)) {
+ int i = 3;
+ while (i-- && !test_bit(QL_ADAPTER_UP, &qdev->flags)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Waiting for adapter UP...\n");
+ ssleep(1);
+ }
+
+ if (!i) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Timed out waiting for adapter UP\n");
+ return -ETIMEDOUT;
+ }
+ }
+
+ status = ql_adapter_down(qdev);
+ if (status)
+ goto error;
+
+ /* Get the new rx buffer size. */
+ lbq_buf_len = (qdev->ndev->mtu > 1500) ?
+ LARGE_BUFFER_MAX_SIZE : LARGE_BUFFER_MIN_SIZE;
+ qdev->lbq_buf_order = get_order(lbq_buf_len);
+
+ for (i = 0; i < qdev->rss_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ /* Set the new size. */
+ rx_ring->lbq_buf_size = lbq_buf_len;
+ }
+
+ status = ql_adapter_up(qdev);
+ if (status)
+ goto error;
+
+ return status;
+error:
+ QPRINTK(qdev, IFUP, ALERT,
+ "Driver up/down cycle failed, closing device.\n");
+ set_bit(QL_ADAPTER_UP, &qdev->flags);
+ dev_close(qdev->ndev);
+ return status;
+}
+
static int qlge_change_mtu(struct net_device *ndev, int new_mtu)
{
struct ql_adapter *qdev = netdev_priv(ndev);
+ int status;
if (ndev->mtu == 1500 && new_mtu == 9000) {
QPRINTK(qdev, IFUP, ERR, "Changing to jumbo MTU.\n");
- queue_delayed_work(qdev->workqueue,
- &qdev->mpi_port_cfg_work, 0);
} else if (ndev->mtu == 9000 && new_mtu == 1500) {
QPRINTK(qdev, IFUP, ERR, "Changing to normal MTU.\n");
} else if ((ndev->mtu == 1500 && new_mtu == 1500) ||
return 0;
} else
return -EINVAL;
+
+ queue_delayed_work(qdev->workqueue,
+ &qdev->mpi_port_cfg_work, 3*HZ);
+
+ if (!netif_running(qdev->ndev)) {
+ ndev->mtu = new_mtu;
+ return 0;
+ }
+
ndev->mtu = new_mtu;
- return 0;
+ status = ql_change_rx_buffers(qdev);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Changing MTU failed.\n");
+ }
+
+ return status;
}
static struct net_device_stats *qlge_get_stats(struct net_device
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff