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RDMA/nes: Free NIC TX buffers when destroying NIC QP

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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>
This commit is contained in:
Bob Sharp 2008-09-26 15:08:10 -05:00 committed by Roland Dreier
parent e88bd7b624
commit 7a8d14070b
1 changed files with 62 additions and 2 deletions
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64
drivers/infiniband/hw/nes/nes_hw.c
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@ -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 */