From: Jakub Kicinski Date: Wed, 8 Mar 2017 16:57:05 +0000 (-0800) Subject: nfp: store device pointer for the fastpath X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fa43d2a895e61defdd32f6ed825740bd2f08106c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git nfp: store device pointer for the fastpath We really only need the device pointer on the fast path, stash it at the beginning of the adapter structure and move pci_dev pointer down. This saves up a few lines of code. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h index 50413eea9540..4ad27570b6c4 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net.h +++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h @@ -435,7 +435,7 @@ struct nfp_stat_pair { /** * struct nfp_net - NFP network device structure - * @pdev: Backpointer to PCI device + * @dev: Backpointer to struct device * @netdev: Backpointer to net_device structure * @is_vf: Is the driver attached to a VF? * @bpf_offload_skip_sw: Offloaded BPF program will not be rerun by cls_bpf @@ -496,11 +496,12 @@ struct nfp_stat_pair { * @debugfs_dir: Device directory in debugfs * @ethtool_dump_flag: Ethtool dump flag * @port_list: Entry on device port list + * @pdev: Backpointer to PCI device * @cpp: CPP device handle if available * @eth_port: Translated ETH Table port entry */ struct nfp_net { - struct pci_dev *pdev; + struct device *dev; struct net_device *netdev; unsigned is_vf:1; @@ -588,6 +589,7 @@ struct nfp_net { struct list_head port_list; + struct pci_dev *pdev; struct nfp_cpp *cpp; struct nfp_eth_table_port *eth_port; diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 8b5fa6fe8807..397d9e82ed0e 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -89,7 +89,7 @@ static dma_addr_t nfp_net_dma_map_rx(struct nfp_net *nn, void *frag, unsigned int bufsz, int direction) { - return dma_map_single(&nn->pdev->dev, frag + NFP_NET_RX_BUF_HEADROOM, + return dma_map_single(nn->dev, frag + NFP_NET_RX_BUF_HEADROOM, bufsz - NFP_NET_RX_BUF_NON_DATA, direction); } @@ -97,7 +97,7 @@ static void nfp_net_dma_unmap_rx(struct nfp_net *nn, dma_addr_t dma_addr, unsigned int bufsz, int direction) { - dma_unmap_single(&nn->pdev->dev, dma_addr, + dma_unmap_single(nn->dev, dma_addr, bufsz - NFP_NET_RX_BUF_NON_DATA, direction); } @@ -768,9 +768,9 @@ static int nfp_net_tx(struct sk_buff *skb, struct net_device *netdev) } /* Start with the head skbuf */ - dma_addr = dma_map_single(&nn->pdev->dev, skb->data, skb_headlen(skb), + dma_addr = dma_map_single(nn->dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); - if (dma_mapping_error(&nn->pdev->dev, dma_addr)) + if (dma_mapping_error(nn->dev, dma_addr)) goto err_free; wr_idx = tx_ring->wr_p & (tx_ring->cnt - 1); @@ -812,9 +812,9 @@ static int nfp_net_tx(struct sk_buff *skb, struct net_device *netdev) frag = &skb_shinfo(skb)->frags[f]; fsize = skb_frag_size(frag); - dma_addr = skb_frag_dma_map(&nn->pdev->dev, frag, 0, + dma_addr = skb_frag_dma_map(nn->dev, frag, 0, fsize, DMA_TO_DEVICE); - if (dma_mapping_error(&nn->pdev->dev, dma_addr)) + if (dma_mapping_error(nn->dev, dma_addr)) goto err_unmap; wr_idx = (wr_idx + 1) & (tx_ring->cnt - 1); @@ -853,8 +853,7 @@ err_unmap: --f; while (f >= 0) { frag = &skb_shinfo(skb)->frags[f]; - dma_unmap_page(&nn->pdev->dev, - tx_ring->txbufs[wr_idx].dma_addr, + dma_unmap_page(nn->dev, tx_ring->txbufs[wr_idx].dma_addr, skb_frag_size(frag), DMA_TO_DEVICE); tx_ring->txbufs[wr_idx].skb = NULL; tx_ring->txbufs[wr_idx].dma_addr = 0; @@ -863,7 +862,7 @@ err_unmap: if (wr_idx < 0) wr_idx += tx_ring->cnt; } - dma_unmap_single(&nn->pdev->dev, tx_ring->txbufs[wr_idx].dma_addr, + dma_unmap_single(nn->dev, tx_ring->txbufs[wr_idx].dma_addr, skb_headlen(skb), DMA_TO_DEVICE); tx_ring->txbufs[wr_idx].skb = NULL; tx_ring->txbufs[wr_idx].dma_addr = 0; @@ -920,8 +919,7 @@ static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring) if (fidx == -1) { /* unmap head */ - dma_unmap_single(&nn->pdev->dev, - tx_ring->txbufs[idx].dma_addr, + dma_unmap_single(nn->dev, tx_ring->txbufs[idx].dma_addr, skb_headlen(skb), DMA_TO_DEVICE); done_pkts += tx_ring->txbufs[idx].pkt_cnt; @@ -929,8 +927,7 @@ static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring) } else { /* unmap fragment */ frag = &skb_shinfo(skb)->frags[fidx]; - dma_unmap_page(&nn->pdev->dev, - tx_ring->txbufs[idx].dma_addr, + dma_unmap_page(nn->dev, tx_ring->txbufs[idx].dma_addr, skb_frag_size(frag), DMA_TO_DEVICE); } @@ -1027,7 +1024,6 @@ nfp_net_tx_ring_reset(struct nfp_net *nn, struct nfp_net_tx_ring *tx_ring) { struct nfp_net_r_vector *r_vec = tx_ring->r_vec; const struct skb_frag_struct *frag; - struct pci_dev *pdev = nn->pdev; struct netdev_queue *nd_q; while (tx_ring->rd_p != tx_ring->wr_p) { @@ -1047,13 +1043,13 @@ nfp_net_tx_ring_reset(struct nfp_net *nn, struct nfp_net_tx_ring *tx_ring) if (tx_buf->fidx == -1) { /* unmap head */ - dma_unmap_single(&pdev->dev, tx_buf->dma_addr, + dma_unmap_single(nn->dev, tx_buf->dma_addr, skb_headlen(skb), DMA_TO_DEVICE); } else { /* unmap fragment */ frag = &skb_shinfo(skb)->frags[tx_buf->fidx]; - dma_unmap_page(&pdev->dev, tx_buf->dma_addr, + dma_unmap_page(nn->dev, tx_buf->dma_addr, skb_frag_size(frag), DMA_TO_DEVICE); } @@ -1157,7 +1153,7 @@ nfp_net_rx_alloc_one(struct nfp_net_rx_ring *rx_ring, dma_addr_t *dma_addr, direction = xdp ? DMA_BIDIRECTIONAL : DMA_FROM_DEVICE; *dma_addr = nfp_net_dma_map_rx(nn, frag, fl_bufsz, direction); - if (dma_mapping_error(&nn->pdev->dev, *dma_addr)) { + if (dma_mapping_error(nn->dev, *dma_addr)) { nfp_net_free_frag(frag, xdp); nn_warn_ratelimit(nn, "Failed to map DMA RX buffer\n"); return NULL; @@ -1181,7 +1177,7 @@ nfp_net_napi_alloc_one(struct nfp_net *nn, int direction, dma_addr_t *dma_addr) } *dma_addr = nfp_net_dma_map_rx(nn, frag, nn->fl_bufsz, direction); - if (dma_mapping_error(&nn->pdev->dev, *dma_addr)) { + if (dma_mapping_error(nn->dev, *dma_addr)) { nfp_net_free_frag(frag, nn->xdp_prog); nn_warn_ratelimit(nn, "Failed to map DMA RX buffer\n"); return NULL; @@ -1499,7 +1495,7 @@ nfp_net_tx_xdp_buf(struct nfp_net *nn, struct nfp_net_rx_ring *rx_ring, txbuf->pkt_cnt = 1; txbuf->real_len = pkt_len; - dma_sync_single_for_device(&nn->pdev->dev, rxbuf->dma_addr + pkt_off, + dma_sync_single_for_device(nn->dev, rxbuf->dma_addr + pkt_off, pkt_len, DMA_BIDIRECTIONAL); /* Build TX descriptor */ @@ -1611,7 +1607,7 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget) nn->bpf_offload_xdp)) { int act; - dma_sync_single_for_cpu(&nn->pdev->dev, + dma_sync_single_for_cpu(nn->dev, rxbuf->dma_addr + pkt_off, pkt_len, DMA_BIDIRECTIONAL); act = nfp_net_run_xdp(xdp_prog, rxbuf->frag + data_off, @@ -1728,12 +1724,11 @@ static void nfp_net_tx_ring_free(struct nfp_net_tx_ring *tx_ring) { struct nfp_net_r_vector *r_vec = tx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; - struct pci_dev *pdev = nn->pdev; kfree(tx_ring->txbufs); if (tx_ring->txds) - dma_free_coherent(&pdev->dev, tx_ring->size, + dma_free_coherent(nn->dev, tx_ring->size, tx_ring->txds, tx_ring->dma); tx_ring->cnt = 0; @@ -1756,13 +1751,12 @@ nfp_net_tx_ring_alloc(struct nfp_net_tx_ring *tx_ring, u32 cnt, bool is_xdp) { struct nfp_net_r_vector *r_vec = tx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; - struct pci_dev *pdev = nn->pdev; int sz; tx_ring->cnt = cnt; tx_ring->size = sizeof(*tx_ring->txds) * tx_ring->cnt; - tx_ring->txds = dma_zalloc_coherent(&pdev->dev, tx_ring->size, + tx_ring->txds = dma_zalloc_coherent(nn->dev, tx_ring->size, &tx_ring->dma, GFP_KERNEL); if (!tx_ring->txds) goto err_alloc; @@ -1849,12 +1843,11 @@ static void nfp_net_rx_ring_free(struct nfp_net_rx_ring *rx_ring) { struct nfp_net_r_vector *r_vec = rx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; - struct pci_dev *pdev = nn->pdev; kfree(rx_ring->rxbufs); if (rx_ring->rxds) - dma_free_coherent(&pdev->dev, rx_ring->size, + dma_free_coherent(nn->dev, rx_ring->size, rx_ring->rxds, rx_ring->dma); rx_ring->cnt = 0; @@ -1878,14 +1871,13 @@ nfp_net_rx_ring_alloc(struct nfp_net_rx_ring *rx_ring, unsigned int fl_bufsz, { struct nfp_net_r_vector *r_vec = rx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; - struct pci_dev *pdev = nn->pdev; int sz; rx_ring->cnt = cnt; rx_ring->bufsz = fl_bufsz; rx_ring->size = sizeof(*rx_ring->rxds) * rx_ring->cnt; - rx_ring->rxds = dma_zalloc_coherent(&pdev->dev, rx_ring->size, + rx_ring->rxds = dma_zalloc_coherent(nn->dev, rx_ring->size, &rx_ring->dma, GFP_KERNEL); if (!rx_ring->rxds) goto err_alloc; @@ -3089,6 +3081,7 @@ struct nfp_net *nfp_net_netdev_alloc(struct pci_dev *pdev, nn = netdev_priv(netdev); nn->netdev = netdev; + nn->dev = &pdev->dev; nn->pdev = pdev; nn->max_tx_rings = max_tx_rings; @@ -3164,7 +3157,7 @@ static void nfp_net_rss_init(struct nfp_net *nn) func_bit = find_first_bit(&rss_cap_hfunc, NFP_NET_CFG_RSS_HFUNCS); if (func_bit == NFP_NET_CFG_RSS_HFUNCS) { - dev_warn(&nn->pdev->dev, + dev_warn(nn->dev, "Bad RSS config, defaulting to Toeplitz hash\n"); func_bit = ETH_RSS_HASH_TOP_BIT; } diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c index f04d0b8e84ad..8a9b3f3b95a8 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c @@ -141,8 +141,7 @@ nfp_net_get_mac_addr_hwinfo(struct nfp_net *nn, struct nfp_cpp *cpp, mac_str = nfp_hwinfo_lookup(cpp, name); if (!mac_str) { - dev_warn(&nn->pdev->dev, - "Can't lookup MAC address. Generate\n"); + dev_warn(nn->dev, "Can't lookup MAC address. Generate\n"); eth_hw_addr_random(nn->netdev); return; } @@ -150,7 +149,7 @@ nfp_net_get_mac_addr_hwinfo(struct nfp_net *nn, struct nfp_cpp *cpp, if (sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", &mac_addr[0], &mac_addr[1], &mac_addr[2], &mac_addr[3], &mac_addr[4], &mac_addr[5]) != 6) { - dev_warn(&nn->pdev->dev, + dev_warn(nn->dev, "Can't parse MAC address (%s). Generate.\n", mac_str); eth_hw_addr_random(nn->netdev); return; diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_offload.c b/drivers/net/ethernet/netronome/nfp/nfp_net_offload.c index 18a851eb3508..f6ed1aa9d94b 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_offload.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_offload.c @@ -168,8 +168,7 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn, start_off = nn_readw(nn, NFP_NET_CFG_BPF_START); done_off = nn_readw(nn, NFP_NET_CFG_BPF_DONE); - *code = dma_zalloc_coherent(&nn->pdev->dev, code_sz, dma_addr, - GFP_KERNEL); + *code = dma_zalloc_coherent(nn->dev, code_sz, dma_addr, GFP_KERNEL); if (!*code) return -ENOMEM; @@ -181,7 +180,7 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn, return 0; out: - dma_free_coherent(&nn->pdev->dev, code_sz, *code, *dma_addr); + dma_free_coherent(nn->dev, code_sz, *code, *dma_addr); return ret; } @@ -214,7 +213,7 @@ nfp_net_bpf_load_and_start(struct nfp_net *nn, u32 tc_flags, if (err) nn_err(nn, "FW command error while enabling BPF: %d\n", err); - dma_free_coherent(&nn->pdev->dev, code_sz, code, dma_addr); + dma_free_coherent(nn->dev, code_sz, code, dma_addr); nfp_net_bpf_stats_reset(nn); mod_timer(&nn->rx_filter_stats_timer, jiffies + NFP_NET_STAT_POLL_IVL);