diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-14 13:35:05 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-14 13:35:05 -0700 |
commit | b292fb80bb44726ac1055d443d951a3058fc8263 (patch) | |
tree | 439131762deba27049f10c7177dd890c44eaa6a2 /drivers/net/ethernet/hisilicon/hns/hns_enet.c | |
parent | 689f891c980949d3eb64f61651db53cb347e0a13 (diff) | |
parent | 1bdab400af5954932714e68ab3df0187a92916cb (diff) |
Merge tag 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull more rdma updates from Doug Ledford:
"This merge window was the first where Huawei had to try and coordinate
their patches between their net driver and their new roce driver
(similar to mlx4 and mlx5).
They didn't do horribly, but there were some issues (and we knew that
because they simply didn't know what to do in the beginning). As a
result, I had a set of patches that depended on some patches that
normally would have come to you via Dave's tree. Those patches have
been on netdev@ for a while, so I got Dave to give me his approval to
send them to you. As such, the other 29 patches I had behind them are
also now ready to go.
This catches the hns and hns-roce drivers up to current, and for
future patches we are working with them to get them up to speed on how
to do joint driver development so that they don't have these sorts of
cross tree dependency issues again. BTW, Dave gave me permission to
add his Acked-by: to the patches against the net tree, but I've had
this branch through 0day (but not linux-next since it was off by
itself) and I didn't want to rebase the series just to add Dave's ack
for the 8 patches in the net area.
Updates to the hns drivers:
- Small patch set for hns net driver that the roce patches depend on
- Various fixes to the hns-roce driver
- Add connection manager support to the hns-roce driver"
* tag 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (36 commits)
IB/hns: Fix for removal of redundant code
IB/hns: Delete the redundant lines in hns_roce_v1_m_qp()
IB/hns: Fix the bug when platform_get_resource() exec fail
IB/hns: Update the rq head when modify qp state
IB/hns: Cq has not been freed
IB/hns: Validate mtu when modified qp
IB/hns: Some items of qpc need to take user param
IB/hns: The Ack timeout need a lower limit value
IB/hns: Return bad wr while post send failed
IB/hns: Fix bug of memory leakage for registering user mr
IB/hns: Modify the init of iboe lock
IB/hns: Optimize code of aeq and ceq interrupt handle and fix the bug of qpn
IB/hns: Delete the sqp_start from the structure hns_roce_caps
IB/hns: Fix bug of clear hem
IB/hns: Remove unused parameter named qp_type
IB/hns: Simplify function of pd alloc and qp alloc
IB/hns: Fix bug of using uninit refcount and free
IB/hns: Remove parameters of resize cq
IB/hns: Remove unused parameters in some functions
IB/hns: Add node_guid definition to the bindings document
...
Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns/hns_enet.c')
-rw-r--r-- | drivers/net/ethernet/hisilicon/hns/hns_enet.c | 107 |
1 files changed, 73 insertions, 34 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index 059aaeda46b1..dff7b60345d8 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -574,7 +574,6 @@ static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, struct sk_buff *skb; struct hnae_desc *desc; struct hnae_desc_cb *desc_cb; - struct ethhdr *eh; unsigned char *va; int bnum, length, i; int pull_len; @@ -600,7 +599,6 @@ static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, ring->stats.sw_err_cnt++; return -ENOMEM; } - skb_reset_mac_header(skb); prefetchw(skb->data); length = le16_to_cpu(desc->rx.pkt_len); @@ -682,14 +680,6 @@ out_bnum_err: return -EFAULT; } - /* filter out multicast pkt with the same src mac as this port */ - eh = eth_hdr(skb); - if (unlikely(is_multicast_ether_addr(eh->h_dest) && - ether_addr_equal(ndev->dev_addr, eh->h_source))) { - dev_kfree_skb_any(skb); - return -EFAULT; - } - ring->stats.rx_pkts++; ring->stats.rx_bytes += skb->len; @@ -747,25 +737,37 @@ static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, ndev->last_rx = jiffies; } +static int hns_desc_unused(struct hnae_ring *ring) +{ + int ntc = ring->next_to_clean; + int ntu = ring->next_to_use; + + return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; +} + static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, int budget, void *v) { struct hnae_ring *ring = ring_data->ring; struct sk_buff *skb; - int num, bnum, ex_num; + int num, bnum; #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 int recv_pkts, recv_bds, clean_count, err; + int unused_count = hns_desc_unused(ring); num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); rmb(); /* make sure num taken effect before the other data is touched */ recv_pkts = 0, recv_bds = 0, clean_count = 0; -recv: + num -= unused_count; + while (recv_pkts < budget && recv_bds < num) { /* reuse or realloc buffers */ - if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { - hns_nic_alloc_rx_buffers(ring_data, clean_count); + if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { + hns_nic_alloc_rx_buffers(ring_data, + clean_count + unused_count); clean_count = 0; + unused_count = hns_desc_unused(ring); } /* poll one pkt */ @@ -786,21 +788,11 @@ recv: recv_pkts++; } - /* make all data has been write before submit */ - if (recv_pkts < budget) { - ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); - - if (ex_num > clean_count) { - num += ex_num - clean_count; - rmb(); /*complete read rx ring bd number*/ - goto recv; - } - } - out: /* make all data has been write before submit */ - if (clean_count > 0) - hns_nic_alloc_rx_buffers(ring_data, clean_count); + if (clean_count + unused_count > 0) + hns_nic_alloc_rx_buffers(ring_data, + clean_count + unused_count); return recv_pkts; } @@ -810,6 +802,8 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) struct hnae_ring *ring = ring_data->ring; int num = 0; + ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); + /* for hardware bug fixed */ num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); @@ -821,6 +815,20 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) } } +static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data) +{ + struct hnae_ring *ring = ring_data->ring; + int num = 0; + + num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); + + if (num == 0) + ring_data->ring->q->handle->dev->ops->toggle_ring_irq( + ring, 0); + else + napi_schedule(&ring_data->napi); +} + static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, int *bytes, int *pkts) { @@ -922,7 +930,11 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) { struct hnae_ring *ring = ring_data->ring; - int head = readl_relaxed(ring->io_base + RCB_REG_HEAD); + int head; + + ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); + + head = readl_relaxed(ring->io_base + RCB_REG_HEAD); if (head != ring->next_to_clean) { ring_data->ring->q->handle->dev->ops->toggle_ring_irq( @@ -932,6 +944,18 @@ static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) } } +static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data) +{ + struct hnae_ring *ring = ring_data->ring; + int head = readl_relaxed(ring->io_base + RCB_REG_HEAD); + + if (head == ring->next_to_clean) + ring_data->ring->q->handle->dev->ops->toggle_ring_irq( + ring, 0); + else + napi_schedule(&ring_data->napi); +} + static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) { struct hnae_ring *ring = ring_data->ring; @@ -963,10 +987,7 @@ static int hns_nic_common_poll(struct napi_struct *napi, int budget) if (clean_complete >= 0 && clean_complete < budget) { napi_complete(napi); - ring_data->ring->q->handle->dev->ops->toggle_ring_irq( - ring_data->ring, 0); - if (ring_data->fini_process) - ring_data->fini_process(ring_data); + ring_data->fini_process(ring_data); return 0; } @@ -1562,6 +1583,21 @@ struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev, return stats; } +static u16 +hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb, + void *accel_priv, select_queue_fallback_t fallback) +{ + struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; + struct hns_nic_priv *priv = netdev_priv(ndev); + + /* fix hardware broadcast/multicast packets queue loopback */ + if (!AE_IS_VER1(priv->enet_ver) && + is_multicast_ether_addr(eth_hdr->h_dest)) + return 0; + else + return fallback(ndev, skb); +} + static const struct net_device_ops hns_nic_netdev_ops = { .ndo_open = hns_nic_net_open, .ndo_stop = hns_nic_net_stop, @@ -1577,6 +1613,7 @@ static const struct net_device_ops hns_nic_netdev_ops = { .ndo_poll_controller = hns_nic_poll_controller, #endif .ndo_set_rx_mode = hns_nic_set_rx_mode, + .ndo_select_queue = hns_nic_select_queue, }; static void hns_nic_update_link_status(struct net_device *netdev) @@ -1738,7 +1775,8 @@ static int hns_nic_init_ring_data(struct hns_nic_priv *priv) rd->queue_index = i; rd->ring = &h->qs[i]->tx_ring; rd->poll_one = hns_nic_tx_poll_one; - rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : NULL; + rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : + hns_nic_tx_fini_pro_v2; netif_napi_add(priv->netdev, &rd->napi, hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM); @@ -1750,7 +1788,8 @@ static int hns_nic_init_ring_data(struct hns_nic_priv *priv) rd->ring = &h->qs[i - h->q_num]->rx_ring; rd->poll_one = hns_nic_rx_poll_one; rd->ex_process = hns_nic_rx_up_pro; - rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : NULL; + rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : + hns_nic_rx_fini_pro_v2; netif_napi_add(priv->netdev, &rd->napi, hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM); |