diff options
Diffstat (limited to 'drivers/net/ethernet/cisco/enic')
-rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_main.c | 54 | ||||
-rw-r--r-- | drivers/net/ethernet/cisco/enic/vnic_rss.h | 9 | ||||
-rw-r--r-- | drivers/net/ethernet/cisco/enic/vnic_wq.h | 20 |
3 files changed, 46 insertions, 37 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index 73cf165..86ee350 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -283,12 +283,10 @@ static irqreturn_t enic_isr_legacy(int irq, void *data) return IRQ_HANDLED; } - if (ENIC_TEST_INTR(pba, io_intr)) { - if (napi_schedule_prep(&enic->napi[0])) - __napi_schedule(&enic->napi[0]); - } else { + if (ENIC_TEST_INTR(pba, io_intr)) + napi_schedule_irqoff(&enic->napi[0]); + else vnic_intr_unmask(&enic->intr[io_intr]); - } return IRQ_HANDLED; } @@ -313,7 +311,7 @@ static irqreturn_t enic_isr_msi(int irq, void *data) * writes). */ - napi_schedule(&enic->napi[0]); + napi_schedule_irqoff(&enic->napi[0]); return IRQ_HANDLED; } @@ -322,7 +320,7 @@ static irqreturn_t enic_isr_msix(int irq, void *data) { struct napi_struct *napi = data; - napi_schedule(napi); + napi_schedule_irqoff(napi); return IRQ_HANDLED; } @@ -531,8 +529,8 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, { struct enic *enic = netdev_priv(netdev); struct vnic_wq *wq; - unsigned long flags; unsigned int txq_map; + struct netdev_queue *txq; if (skb->len <= 0) { dev_kfree_skb_any(skb); @@ -541,6 +539,7 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, txq_map = skb_get_queue_mapping(skb) % enic->wq_count; wq = &enic->wq[txq_map]; + txq = netdev_get_tx_queue(netdev, txq_map); /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, * which is very likely. In the off chance it's going to take @@ -554,23 +553,25 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, return NETDEV_TX_OK; } - spin_lock_irqsave(&enic->wq_lock[txq_map], flags); + spin_lock(&enic->wq_lock[txq_map]); if (vnic_wq_desc_avail(wq) < skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { - netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); + netif_tx_stop_queue(txq); /* This is a hard error, log it */ netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); - spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); + spin_unlock(&enic->wq_lock[txq_map]); return NETDEV_TX_BUSY; } enic_queue_wq_skb(enic, wq, skb); if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) - netif_tx_stop_queue(netdev_get_tx_queue(netdev, txq_map)); + netif_tx_stop_queue(txq); + if (!skb->xmit_more || netif_xmit_stopped(txq)) + vnic_wq_doorbell(wq); - spin_unlock_irqrestore(&enic->wq_lock[txq_map], flags); + spin_unlock(&enic->wq_lock[txq_map]); return NETDEV_TX_OK; } @@ -1312,9 +1313,10 @@ static int enic_poll_msix_wq(struct napi_struct *napi, int budget) if (!wq_work_done) { napi_complete(napi); vnic_intr_unmask(&enic->intr[intr]); + return 0; } - return 0; + return budget; } static int enic_poll_msix_rq(struct napi_struct *napi, int budget) @@ -1888,23 +1890,23 @@ static int enic_dev_hang_reset(struct enic *enic) static int enic_set_rsskey(struct enic *enic) { + union vnic_rss_key *rss_key_buf_va; dma_addr_t rss_key_buf_pa; - union vnic_rss_key *rss_key_buf_va = NULL; - union vnic_rss_key rss_key = { - .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, - .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, - .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, - .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, - }; - int err; + u8 rss_key[ENIC_RSS_LEN]; + int i, kidx, bidx, err; - rss_key_buf_va = pci_alloc_consistent(enic->pdev, - sizeof(union vnic_rss_key), &rss_key_buf_pa); + rss_key_buf_va = pci_zalloc_consistent(enic->pdev, + sizeof(union vnic_rss_key), + &rss_key_buf_pa); if (!rss_key_buf_va) return -ENOMEM; - memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); - + netdev_rss_key_fill(rss_key, ENIC_RSS_LEN); + for (i = 0; i < ENIC_RSS_LEN; i++) { + kidx = i / ENIC_RSS_BYTES_PER_KEY; + bidx = i % ENIC_RSS_BYTES_PER_KEY; + rss_key_buf_va->key[kidx].b[bidx] = rss_key[i]; + } spin_lock_bh(&enic->devcmd_lock); err = enic_set_rss_key(enic, rss_key_buf_pa, diff --git a/drivers/net/ethernet/cisco/enic/vnic_rss.h b/drivers/net/ethernet/cisco/enic/vnic_rss.h index fa421ba..881fa18 100644 --- a/drivers/net/ethernet/cisco/enic/vnic_rss.h +++ b/drivers/net/ethernet/cisco/enic/vnic_rss.h @@ -20,11 +20,16 @@ #define _VNIC_RSS_H_ /* RSS key array */ + +#define ENIC_RSS_BYTES_PER_KEY 10 +#define ENIC_RSS_KEYS 4 +#define ENIC_RSS_LEN (ENIC_RSS_BYTES_PER_KEY * ENIC_RSS_KEYS) + union vnic_rss_key { struct { - u8 b[10]; + u8 b[ENIC_RSS_BYTES_PER_KEY]; u8 b_pad[6]; - } key[4]; + } key[ENIC_RSS_KEYS]; u64 raw[8]; }; diff --git a/drivers/net/ethernet/cisco/enic/vnic_wq.h b/drivers/net/ethernet/cisco/enic/vnic_wq.h index 2c6c708..816f1ad 100644 --- a/drivers/net/ethernet/cisco/enic/vnic_wq.h +++ b/drivers/net/ethernet/cisco/enic/vnic_wq.h @@ -104,6 +104,17 @@ static inline void *vnic_wq_next_desc(struct vnic_wq *wq) return wq->to_use->desc; } +static inline void vnic_wq_doorbell(struct vnic_wq *wq) +{ + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + iowrite32(wq->to_use->index, &wq->ctrl->posted_index); +} + static inline void vnic_wq_post(struct vnic_wq *wq, void *os_buf, dma_addr_t dma_addr, unsigned int len, int sop, int eop, @@ -122,15 +133,6 @@ static inline void vnic_wq_post(struct vnic_wq *wq, buf->wr_id = wrid; buf = buf->next; - if (eop) { - /* Adding write memory barrier prevents compiler and/or CPU - * reordering, thus avoiding descriptor posting before - * descriptor is initialized. Otherwise, hardware can read - * stale descriptor fields. - */ - wmb(); - iowrite32(buf->index, &wq->ctrl->posted_index); - } wq->to_use = buf; wq->ring.desc_avail -= desc_skip_cnt; |