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authorBob Sharp <bsharp@neteffect.com>2008-09-26 15:08:10 -0500
committerRoland Dreier <rolandd@cisco.com>2008-09-30 15:35:47 -0700
commit7a8d14070b3e2d52d2b531434ed09fa1787ae7ca (patch)
tree2a8849888a7c2e1ee6675428660f4c706368ac1f
parente88bd7b624133e0b07adb21c45c9e6f68f8fdda2 (diff)
RDMA/nes: Free NIC TX buffers when destroying NIC QP
Signed-off-by: Bob Sharp <bsharp@neteffect.com> Signed-off-by: Sweta Bhatt <sweta.bhatt@einfochips.com> Signed-off-by: Chien Tung <ctung@neteffect.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.c64
1 files changed, 62 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index 1437b6e397b..bc16fc082d9 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -1797,9 +1797,14 @@ int nes_init_nic_qp(struct nes_device *nesdev, struct net_device *netdev)
*/
void nes_destroy_nic_qp(struct nes_vnic *nesvnic)
{
+ u64 u64temp;
+ dma_addr_t bus_address;
struct nes_device *nesdev = nesvnic->nesdev;
struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_hw_nic_sq_wqe *nic_sqe;
struct nes_hw_nic_rq_wqe *nic_rqe;
+ __le16 *wqe_fragment_length;
+ u16 wqe_fragment_index;
u64 wqe_frag;
u32 cqp_head;
unsigned long flags;
@@ -1808,14 +1813,69 @@ void nes_destroy_nic_qp(struct nes_vnic *nesvnic)
/* Free remaining NIC receive buffers */
while (nesvnic->nic.rq_head != nesvnic->nic.rq_tail) {
nic_rqe = &nesvnic->nic.rq_vbase[nesvnic->nic.rq_tail];
- wqe_frag = (u64)le32_to_cpu(nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX]);
- wqe_frag |= ((u64)le32_to_cpu(nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX])) << 32;
+ wqe_frag = (u64)le32_to_cpu(
+ nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX]);
+ wqe_frag |= ((u64)le32_to_cpu(
+ nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX]))<<32;
pci_unmap_single(nesdev->pcidev, (dma_addr_t)wqe_frag,
nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
dev_kfree_skb(nesvnic->nic.rx_skb[nesvnic->nic.rq_tail++]);
nesvnic->nic.rq_tail &= (nesvnic->nic.rq_size - 1);
}
+ /* Free remaining NIC transmit buffers */
+ while (nesvnic->nic.sq_head != nesvnic->nic.sq_tail) {
+ nic_sqe = &nesvnic->nic.sq_vbase[nesvnic->nic.sq_tail];
+ wqe_fragment_index = 1;
+ wqe_fragment_length = (__le16 *)
+ &nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
+ /* bump past the vlan tag */
+ wqe_fragment_length++;
+ if (le16_to_cpu(wqe_fragment_length[wqe_fragment_index]) != 0) {
+ u64temp = (u64)le32_to_cpu(
+ nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
+ wqe_fragment_index*2]);
+ u64temp += ((u64)le32_to_cpu(
+ nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX
+ + wqe_fragment_index*2]))<<32;
+ bus_address = (dma_addr_t)u64temp;
+ if (test_and_clear_bit(nesvnic->nic.sq_tail,
+ nesvnic->nic.first_frag_overflow)) {
+ pci_unmap_single(nesdev->pcidev,
+ bus_address,
+ le16_to_cpu(wqe_fragment_length[
+ wqe_fragment_index++]),
+ PCI_DMA_TODEVICE);
+ }
+ for (; wqe_fragment_index < 5; wqe_fragment_index++) {
+ if (wqe_fragment_length[wqe_fragment_index]) {
+ u64temp = le32_to_cpu(
+ nic_sqe->wqe_words[
+ NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
+ wqe_fragment_index*2]);
+ u64temp += ((u64)le32_to_cpu(
+ nic_sqe->wqe_words[
+ NES_NIC_SQ_WQE_FRAG0_HIGH_IDX+
+ wqe_fragment_index*2]))<<32;
+ bus_address = (dma_addr_t)u64temp;
+ pci_unmap_page(nesdev->pcidev,
+ bus_address,
+ le16_to_cpu(
+ wqe_fragment_length[
+ wqe_fragment_index]),
+ PCI_DMA_TODEVICE);
+ } else
+ break;
+ }
+ }
+ if (nesvnic->nic.tx_skb[nesvnic->nic.sq_tail])
+ dev_kfree_skb(
+ nesvnic->nic.tx_skb[nesvnic->nic.sq_tail]);
+
+ nesvnic->nic.sq_tail = (++nesvnic->nic.sq_tail)
+ & (nesvnic->nic.sq_size - 1);
+ }
+
spin_lock_irqsave(&nesdev->cqp.lock, flags);
/* Destroy NIC QP */