diff options
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_netdev.c')
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_netdev.c | 91 |
1 files changed, 85 insertions, 6 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_netdev.c b/drivers/net/wwan/t7xx/t7xx_netdev.c index f71d3bc3b237..494a28e386a3 100644 --- a/drivers/net/wwan/t7xx/t7xx_netdev.c +++ b/drivers/net/wwan/t7xx/t7xx_netdev.c @@ -22,6 +22,7 @@ #include <linux/gfp.h> #include <linux/if_arp.h> #include <linux/if_ether.h> +#include <linux/ip.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/netdev_features.h> @@ -29,6 +30,7 @@ #include <linux/skbuff.h> #include <linux/types.h> #include <linux/wwan.h> +#include <net/ipv6.h> #include <net/pkt_sched.h> #include "t7xx_hif_dpmaif_rx.h" @@ -39,13 +41,47 @@ #include "t7xx_state_monitor.h" #define IP_MUX_SESSION_DEFAULT 0 +#define SBD_PACKET_TYPE_MASK GENMASK(7, 4) + +static void t7xx_ccmni_enable_napi(struct t7xx_ccmni_ctrl *ctlb) +{ + int i; + + if (ctlb->is_napi_en) + return; + + for (i = 0; i < RXQ_NUM; i++) { + napi_enable(ctlb->napi[i]); + napi_schedule(ctlb->napi[i]); + } + ctlb->is_napi_en = true; +} + +static void t7xx_ccmni_disable_napi(struct t7xx_ccmni_ctrl *ctlb) +{ + int i; + + if (!ctlb->is_napi_en) + return; + + for (i = 0; i < RXQ_NUM; i++) { + napi_synchronize(ctlb->napi[i]); + napi_disable(ctlb->napi[i]); + } + + ctlb->is_napi_en = false; +} static int t7xx_ccmni_open(struct net_device *dev) { struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev); + struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb; netif_carrier_on(dev); netif_tx_start_all_queues(dev); + if (!atomic_fetch_inc(&ccmni_ctl->napi_usr_refcnt)) + t7xx_ccmni_enable_napi(ccmni_ctl); + atomic_inc(&ccmni->usage); return 0; } @@ -53,8 +89,12 @@ static int t7xx_ccmni_open(struct net_device *dev) static int t7xx_ccmni_close(struct net_device *dev) { struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev); + struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb; atomic_dec(&ccmni->usage); + if (atomic_dec_and_test(&ccmni_ctl->napi_usr_refcnt)) + t7xx_ccmni_disable_napi(ccmni_ctl); + netif_carrier_off(dev); netif_tx_disable(dev); return 0; @@ -127,6 +167,9 @@ static void t7xx_ccmni_start(struct t7xx_ccmni_ctrl *ctlb) netif_carrier_on(ccmni->dev); } } + + if (atomic_read(&ctlb->napi_usr_refcnt)) + t7xx_ccmni_enable_napi(ctlb); } static void t7xx_ccmni_pre_stop(struct t7xx_ccmni_ctrl *ctlb) @@ -149,6 +192,9 @@ static void t7xx_ccmni_post_stop(struct t7xx_ccmni_ctrl *ctlb) struct t7xx_ccmni *ccmni; int i; + if (atomic_read(&ctlb->napi_usr_refcnt)) + t7xx_ccmni_disable_napi(ctlb); + for (i = 0; i < ctlb->nic_dev_num; i++) { ccmni = ctlb->ccmni_inst[i]; if (!ccmni) @@ -161,7 +207,7 @@ static void t7xx_ccmni_post_stop(struct t7xx_ccmni_ctrl *ctlb) static void t7xx_ccmni_wwan_setup(struct net_device *dev) { - dev->hard_header_len += sizeof(struct ccci_header); + dev->needed_headroom += sizeof(struct ccci_header); dev->mtu = ETH_DATA_LEN; dev->max_mtu = CCMNI_MTU_MAX; @@ -183,6 +229,9 @@ static void t7xx_ccmni_wwan_setup(struct net_device *dev) dev->features |= NETIF_F_RXCSUM; dev->hw_features |= NETIF_F_RXCSUM; + dev->features |= NETIF_F_GRO; + dev->hw_features |= NETIF_F_GRO; + dev->needs_free_netdev = true; dev->type = ARPHRD_NONE; @@ -190,6 +239,34 @@ static void t7xx_ccmni_wwan_setup(struct net_device *dev) dev->netdev_ops = &ccmni_netdev_ops; } +static void t7xx_init_netdev_napi(struct t7xx_ccmni_ctrl *ctlb) +{ + int i; + + /* one HW, but shared with multiple net devices, + * so add a dummy device for NAPI. + */ + init_dummy_netdev(&ctlb->dummy_dev); + atomic_set(&ctlb->napi_usr_refcnt, 0); + ctlb->is_napi_en = false; + + for (i = 0; i < RXQ_NUM; i++) { + ctlb->napi[i] = &ctlb->hif_ctrl->rxq[i].napi; + netif_napi_add_weight(&ctlb->dummy_dev, ctlb->napi[i], t7xx_dpmaif_napi_rx_poll, + NIC_NAPI_POLL_BUDGET); + } +} + +static void t7xx_uninit_netdev_napi(struct t7xx_ccmni_ctrl *ctlb) +{ + int i; + + for (i = 0; i < RXQ_NUM; i++) { + netif_napi_del(ctlb->napi[i]); + ctlb->napi[i] = NULL; + } +} + static int t7xx_ccmni_wwan_newlink(void *ctxt, struct net_device *dev, u32 if_id, struct netlink_ext_ack *extack) { @@ -311,7 +388,8 @@ static void init_md_status_notifier(struct t7xx_pci_dev *t7xx_dev) t7xx_fsm_notifier_register(t7xx_dev->md, md_status_notifier); } -static void t7xx_ccmni_recv_skb(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb) +static void t7xx_ccmni_recv_skb(struct t7xx_ccmni_ctrl *ccmni_ctlb, struct sk_buff *skb, + struct napi_struct *napi) { struct t7xx_skb_cb *skb_cb; struct net_device *net_dev; @@ -321,23 +399,22 @@ static void t7xx_ccmni_recv_skb(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *s skb_cb = T7XX_SKB_CB(skb); netif_id = skb_cb->netif_idx; - ccmni = t7xx_dev->ccmni_ctlb->ccmni_inst[netif_id]; + ccmni = ccmni_ctlb->ccmni_inst[netif_id]; if (!ccmni) { dev_kfree_skb(skb); return; } net_dev = ccmni->dev; - skb->dev = net_dev; - pkt_type = skb_cb->rx_pkt_type; + skb->dev = net_dev; if (pkt_type == PKT_TYPE_IP6) skb->protocol = htons(ETH_P_IPV6); else skb->protocol = htons(ETH_P_IP); skb_len = skb->len; - netif_rx(skb); + napi_gro_receive(napi, skb); net_dev->stats.rx_packets++; net_dev->stats.rx_bytes += skb_len; } @@ -404,6 +481,7 @@ int t7xx_ccmni_init(struct t7xx_pci_dev *t7xx_dev) if (!ctlb->hif_ctrl) return -ENOMEM; + t7xx_init_netdev_napi(ctlb); init_md_status_notifier(t7xx_dev); return 0; } @@ -419,5 +497,6 @@ void t7xx_ccmni_exit(struct t7xx_pci_dev *t7xx_dev) ctlb->wwan_is_registered = false; } + t7xx_uninit_netdev_napi(ctlb); t7xx_dpmaif_hif_exit(ctlb->hif_ctrl); } |