diff --git a/drivers/net/3c507.c b/drivers/net/3c507.c index 82eaf65d2d85..ea9b7a098c9b 100644 --- a/drivers/net/3c507.c +++ b/drivers/net/3c507.c @@ -551,8 +551,7 @@ static irqreturn_t el16_interrupt(int irq, void *dev_id) void __iomem *shmem; if (dev == NULL) { - pr_err("%s: net_interrupt(): irq %d for unknown device.\n", - dev->name, irq); + pr_err("net_interrupt(): irq %d for unknown device.\n", irq); return IRQ_NONE; } diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c index c911bfb55b19..9d11dbf5e4da 100644 --- a/drivers/net/benet/be_cmds.c +++ b/drivers/net/benet/be_cmds.c @@ -294,7 +294,7 @@ int be_cmd_POST(struct be_adapter *adapter) } else { return 0; } - } while (timeout < 20); + } while (timeout < 40); dev_err(&adapter->pdev->dev, "POST timeout; stage=0x%x\n", stage); return -1; diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index aa065c71ddd8..54b14272f333 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -1861,7 +1861,7 @@ static int be_setup(struct be_adapter *adapter) goto if_destroy; } vf++; - } while (vf < num_vfs); + } } else if (!be_physfn(adapter)) { status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle); diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c index be90d3598bca..fe925663d39a 100644 --- a/drivers/net/cnic.c +++ b/drivers/net/cnic.c @@ -3367,13 +3367,9 @@ static int cnic_cm_shutdown(struct cnic_dev *dev) static void cnic_init_context(struct cnic_dev *dev, u32 cid) { - struct cnic_local *cp = dev->cnic_priv; u32 cid_addr; int i; - if (CHIP_NUM(cp) == CHIP_NUM_5709) - return; - cid_addr = GET_CID_ADDR(cid); for (i = 0; i < CTX_SIZE; i += 4) @@ -3530,14 +3526,11 @@ static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) sb_id = cp->status_blk_num; tx_cid = 20; - cnic_init_context(dev, tx_cid); - cnic_init_context(dev, tx_cid + 1); cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { struct status_block_msix *sblk = cp->status_blk.bnx2; tx_cid = TX_TSS_CID + sb_id - 1; - cnic_init_context(dev, tx_cid); CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | (TX_TSS_CID << 7)); cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; @@ -3556,6 +3549,9 @@ static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; } else { + cnic_init_context(dev, tx_cid); + cnic_init_context(dev, tx_cid + 1); + offset0 = BNX2_L2CTX_TYPE; offset1 = BNX2_L2CTX_CMD_TYPE; offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; diff --git a/drivers/net/cnic_if.h b/drivers/net/cnic_if.h index 110c62072e6f..0c55177db046 100644 --- a/drivers/net/cnic_if.h +++ b/drivers/net/cnic_if.h @@ -12,8 +12,8 @@ #ifndef CNIC_IF_H #define CNIC_IF_H -#define CNIC_MODULE_VERSION "2.1.1" -#define CNIC_MODULE_RELDATE "Feb 22, 2010" +#define CNIC_MODULE_VERSION "2.1.2" +#define CNIC_MODULE_RELDATE "May 26, 2010" #define CNIC_ULP_RDMA 0 #define CNIC_ULP_ISCSI 1 diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 326465ffbb23..ddf7a86cd466 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -681,6 +681,8 @@ static int fec_enet_mii_probe(struct net_device *dev) struct phy_device *phy_dev = NULL; int phy_addr; + fep->phy_dev = NULL; + /* find the first phy */ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { if (fep->mii_bus->phy_map[phy_addr]) { @@ -711,6 +713,11 @@ static int fec_enet_mii_probe(struct net_device *dev) fep->link = 0; fep->full_duplex = 0; + printk(KERN_INFO "%s: Freescale FEC PHY driver [%s] " + "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name, + fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev), + fep->phy_dev->irq); + return 0; } @@ -756,13 +763,8 @@ static int fec_enet_mii_init(struct platform_device *pdev) if (mdiobus_register(fep->mii_bus)) goto err_out_free_mdio_irq; - if (fec_enet_mii_probe(dev) != 0) - goto err_out_unregister_bus; - return 0; -err_out_unregister_bus: - mdiobus_unregister(fep->mii_bus); err_out_free_mdio_irq: kfree(fep->mii_bus->irq); err_out_free_mdiobus: @@ -915,7 +917,12 @@ fec_enet_open(struct net_device *dev) if (ret) return ret; - /* schedule a link state check */ + /* Probe and connect to PHY when open the interface */ + ret = fec_enet_mii_probe(dev); + if (ret) { + fec_enet_free_buffers(dev); + return ret; + } phy_start(fep->phy_dev); netif_start_queue(dev); fep->opened = 1; @@ -929,10 +936,12 @@ fec_enet_close(struct net_device *dev) /* Don't know what to do yet. */ fep->opened = 0; - phy_stop(fep->phy_dev); netif_stop_queue(dev); fec_stop(dev); + if (fep->phy_dev) + phy_disconnect(fep->phy_dev); + fec_enet_free_buffers(dev); return 0; @@ -1316,11 +1325,6 @@ fec_probe(struct platform_device *pdev) if (ret) goto failed_register; - printk(KERN_INFO "%s: Freescale FEC PHY driver [%s] " - "(mii_bus:phy_addr=%s, irq=%d)\n", ndev->name, - fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev), - fep->phy_dev->irq); - return 0; failed_register: diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 694132e04af6..4e7d1d0a2340 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -1151,8 +1151,7 @@ static int __init yam_init_driver(void) dev = alloc_netdev(sizeof(struct yam_port), name, yam_setup); if (!dev) { - printk(KERN_ERR "yam: cannot allocate net device %s\n", - dev->name); + pr_err("yam: cannot allocate net device\n"); err = -ENOMEM; goto error; } diff --git a/drivers/net/ll_temac.h b/drivers/net/ll_temac.h index c03358434acb..522abe2ff25a 100644 --- a/drivers/net/ll_temac.h +++ b/drivers/net/ll_temac.h @@ -295,6 +295,10 @@ This option defaults to enabled (set) */ #define MULTICAST_CAM_TABLE_NUM 4 +/* TEMAC Synthesis features */ +#define TEMAC_FEATURE_RX_CSUM (1 << 0) +#define TEMAC_FEATURE_TX_CSUM (1 << 1) + /* TX/RX CURDESC_PTR points to first descriptor */ /* TX/RX TAILDESC_PTR points to last descriptor in linked list */ @@ -353,6 +357,7 @@ struct temac_local { struct mutex indirect_mutex; u32 options; /* Current options word */ int last_link; + unsigned int temac_features; /* Buffer descriptors */ struct cdmac_bd *tx_bd_v; diff --git a/drivers/net/ll_temac_main.c b/drivers/net/ll_temac_main.c index fa7620e28404..52dcc8495647 100644 --- a/drivers/net/ll_temac_main.c +++ b/drivers/net/ll_temac_main.c @@ -245,7 +245,7 @@ static int temac_dma_bd_init(struct net_device *ndev) CHNL_CTRL_IRQ_COAL_EN); /* 0x10220483 */ /* 0x00100483 */ - lp->dma_out(lp, RX_CHNL_CTRL, 0xff010000 | + lp->dma_out(lp, RX_CHNL_CTRL, 0xff070000 | CHNL_CTRL_IRQ_EN | CHNL_CTRL_IRQ_DLY_EN | CHNL_CTRL_IRQ_COAL_EN | @@ -574,6 +574,10 @@ static void temac_start_xmit_done(struct net_device *ndev) if (cur_p->app4) dev_kfree_skb_irq((struct sk_buff *)cur_p->app4); cur_p->app0 = 0; + cur_p->app1 = 0; + cur_p->app2 = 0; + cur_p->app3 = 0; + cur_p->app4 = 0; ndev->stats.tx_packets++; ndev->stats.tx_bytes += cur_p->len; @@ -589,6 +593,29 @@ static void temac_start_xmit_done(struct net_device *ndev) netif_wake_queue(ndev); } +static inline int temac_check_tx_bd_space(struct temac_local *lp, int num_frag) +{ + struct cdmac_bd *cur_p; + int tail; + + tail = lp->tx_bd_tail; + cur_p = &lp->tx_bd_v[tail]; + + do { + if (cur_p->app0) + return NETDEV_TX_BUSY; + + tail++; + if (tail >= TX_BD_NUM) + tail = 0; + + cur_p = &lp->tx_bd_v[tail]; + num_frag--; + } while (num_frag >= 0); + + return 0; +} + static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev) { struct temac_local *lp = netdev_priv(ndev); @@ -603,7 +630,7 @@ static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev) start_p = lp->tx_bd_p + sizeof(*lp->tx_bd_v) * lp->tx_bd_tail; cur_p = &lp->tx_bd_v[lp->tx_bd_tail]; - if (cur_p->app0 & STS_CTRL_APP0_CMPLT) { + if (temac_check_tx_bd_space(lp, num_frag)) { if (!netif_queue_stopped(ndev)) { netif_stop_queue(ndev); return NETDEV_TX_BUSY; @@ -613,29 +640,14 @@ static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev) cur_p->app0 = 0; if (skb->ip_summed == CHECKSUM_PARTIAL) { - const struct iphdr *ip = ip_hdr(skb); - int length = 0, start = 0, insert = 0; + unsigned int csum_start_off = skb_transport_offset(skb); + unsigned int csum_index_off = csum_start_off + skb->csum_offset; - switch (ip->protocol) { - case IPPROTO_TCP: - start = sizeof(struct iphdr) + ETH_HLEN; - insert = sizeof(struct iphdr) + ETH_HLEN + 16; - length = ip->tot_len - sizeof(struct iphdr); - break; - case IPPROTO_UDP: - start = sizeof(struct iphdr) + ETH_HLEN; - insert = sizeof(struct iphdr) + ETH_HLEN + 6; - length = ip->tot_len - sizeof(struct iphdr); - break; - default: - break; - } - cur_p->app1 = ((start << 16) | insert); - cur_p->app2 = csum_tcpudp_magic(ip->saddr, ip->daddr, - length, ip->protocol, 0); - skb->data[insert] = 0; - skb->data[insert + 1] = 0; + cur_p->app0 |= 1; /* TX Checksum Enabled */ + cur_p->app1 = (csum_start_off << 16) | csum_index_off; + cur_p->app2 = 0; /* initial checksum seed */ } + cur_p->app0 |= STS_CTRL_APP0_SOP; cur_p->len = skb_headlen(skb); cur_p->phys = dma_map_single(ndev->dev.parent, skb->data, skb->len, @@ -699,6 +711,15 @@ static void ll_temac_recv(struct net_device *ndev) skb->protocol = eth_type_trans(skb, ndev); skb->ip_summed = CHECKSUM_NONE; + /* if we're doing rx csum offload, set it up */ + if (((lp->temac_features & TEMAC_FEATURE_RX_CSUM) != 0) && + (skb->protocol == __constant_htons(ETH_P_IP)) && + (skb->len > 64)) { + + skb->csum = cur_p->app3 & 0xFFFF; + skb->ip_summed = CHECKSUM_COMPLETE; + } + netif_rx(skb); ndev->stats.rx_packets++; @@ -883,6 +904,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match) struct temac_local *lp; struct net_device *ndev; const void *addr; + __be32 *p; int size, rc = 0; /* Init network device structure */ @@ -926,6 +948,18 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match) goto nodev; } + /* Setup checksum offload, but default to off if not specified */ + lp->temac_features = 0; + p = (__be32 *)of_get_property(op->dev.of_node, "xlnx,txcsum", NULL); + if (p && be32_to_cpu(*p)) { + lp->temac_features |= TEMAC_FEATURE_TX_CSUM; + /* Can checksum TCP/UDP over IPv4. */ + ndev->features |= NETIF_F_IP_CSUM; + } + p = (__be32 *)of_get_property(op->dev.of_node, "xlnx,rxcsum", NULL); + if (p && be32_to_cpu(*p)) + lp->temac_features |= TEMAC_FEATURE_RX_CSUM; + /* Find the DMA node, map the DMA registers, and decode the DMA IRQs */ np = of_parse_phandle(op->dev.of_node, "llink-connected", 0); if (!np) { @@ -950,7 +984,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match) lp->rx_irq = irq_of_parse_and_map(np, 0); lp->tx_irq = irq_of_parse_and_map(np, 1); - if (!lp->rx_irq || !lp->tx_irq) { + if ((lp->rx_irq == NO_IRQ) || (lp->tx_irq == NO_IRQ)) { dev_err(&op->dev, "could not determine irqs\n"); rc = -ENOMEM; goto nodev; diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index aa88911c9504..0f41c9195e9b 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -593,17 +593,17 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl, int r; switch (ioctl) { case VHOST_NET_SET_BACKEND: - r = copy_from_user(&backend, argp, sizeof backend); - if (r < 0) - return r; + if (copy_from_user(&backend, argp, sizeof backend)) + return -EFAULT; return vhost_net_set_backend(n, backend.index, backend.fd); case VHOST_GET_FEATURES: features = VHOST_FEATURES; - return copy_to_user(featurep, &features, sizeof features); + if (copy_to_user(featurep, &features, sizeof features)) + return -EFAULT; + return 0; case VHOST_SET_FEATURES: - r = copy_from_user(&features, featurep, sizeof features); - if (r < 0) - return r; + if (copy_from_user(&features, featurep, sizeof features)) + return -EFAULT; if (features & ~VHOST_FEATURES) return -EOPNOTSUPP; return vhost_net_set_features(n, features); diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index c6fb8e968f21..3b83382e06eb 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -320,10 +320,8 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) { struct vhost_memory mem, *newmem, *oldmem; unsigned long size = offsetof(struct vhost_memory, regions); - long r; - r = copy_from_user(&mem, m, size); - if (r) - return r; + if (copy_from_user(&mem, m, size)) + return -EFAULT; if (mem.padding) return -EOPNOTSUPP; if (mem.nregions > VHOST_MEMORY_MAX_NREGIONS) @@ -333,15 +331,16 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) return -ENOMEM; memcpy(newmem, &mem, size); - r = copy_from_user(newmem->regions, m->regions, - mem.nregions * sizeof *m->regions); - if (r) { + if (copy_from_user(newmem->regions, m->regions, + mem.nregions * sizeof *m->regions)) { kfree(newmem); - return r; + return -EFAULT; } - if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL))) + if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL))) { + kfree(newmem); return -EFAULT; + } oldmem = d->memory; rcu_assign_pointer(d->memory, newmem); synchronize_rcu(); @@ -374,7 +373,7 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) r = get_user(idx, idxp); if (r < 0) return r; - if (idx > d->nvqs) + if (idx >= d->nvqs) return -ENOBUFS; vq = d->vqs + idx; @@ -389,9 +388,10 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) r = -EBUSY; break; } - r = copy_from_user(&s, argp, sizeof s); - if (r < 0) + if (copy_from_user(&s, argp, sizeof s)) { + r = -EFAULT; break; + } if (!s.num || s.num > 0xffff || (s.num & (s.num - 1))) { r = -EINVAL; break; @@ -405,9 +405,10 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) r = -EBUSY; break; } - r = copy_from_user(&s, argp, sizeof s); - if (r < 0) + if (copy_from_user(&s, argp, sizeof s)) { + r = -EFAULT; break; + } if (s.num > 0xffff) { r = -EINVAL; break; @@ -419,12 +420,14 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) case VHOST_GET_VRING_BASE: s.index = idx; s.num = vq->last_avail_idx; - r = copy_to_user(argp, &s, sizeof s); + if (copy_to_user(argp, &s, sizeof s)) + r = -EFAULT; break; case VHOST_SET_VRING_ADDR: - r = copy_from_user(&a, argp, sizeof a); - if (r < 0) + if (copy_from_user(&a, argp, sizeof a)) { + r = -EFAULT; break; + } if (a.flags & ~(0x1 << VHOST_VRING_F_LOG)) { r = -EOPNOTSUPP; break; @@ -477,9 +480,10 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) vq->used = (void __user *)(unsigned long)a.used_user_addr; break; case VHOST_SET_VRING_KICK: - r = copy_from_user(&f, argp, sizeof f); - if (r < 0) + if (copy_from_user(&f, argp, sizeof f)) { + r = -EFAULT; break; + } eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd); if (IS_ERR(eventfp)) { r = PTR_ERR(eventfp); @@ -492,9 +496,10 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) filep = eventfp; break; case VHOST_SET_VRING_CALL: - r = copy_from_user(&f, argp, sizeof f); - if (r < 0) + if (copy_from_user(&f, argp, sizeof f)) { + r = -EFAULT; break; + } eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd); if (IS_ERR(eventfp)) { r = PTR_ERR(eventfp); @@ -510,9 +515,10 @@ static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) filep = eventfp; break; case VHOST_SET_VRING_ERR: - r = copy_from_user(&f, argp, sizeof f); - if (r < 0) + if (copy_from_user(&f, argp, sizeof f)) { + r = -EFAULT; break; + } eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd); if (IS_ERR(eventfp)) { r = PTR_ERR(eventfp); @@ -575,9 +581,10 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, unsigned long arg) r = vhost_set_memory(d, argp); break; case VHOST_SET_LOG_BASE: - r = copy_from_user(&p, argp, sizeof p); - if (r < 0) + if (copy_from_user(&p, argp, sizeof p)) { + r = -EFAULT; break; + } if ((u64)(unsigned long)p != p) { r = -EFAULT; break; diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h index 6cf44866cecd..726cc3536409 100644 --- a/include/net/cls_cgroup.h +++ b/include/net/cls_cgroup.h @@ -39,7 +39,7 @@ extern int net_cls_subsys_id; static inline u32 task_cls_classid(struct task_struct *p) { int id; - u32 classid; + u32 classid = 0; if (in_interrupt()) return 0; diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 6173c619913a..4b860116e096 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -876,7 +876,7 @@ struct sctp_transport { /* Reference counting. */ atomic_t refcnt; - int dead:1, + __u32 dead:1, /* RTO-Pending : A flag used to track if one of the DATA * chunks sent to this address is currently being * used to compute a RTT. If this flag is 0, diff --git a/include/net/sock.h b/include/net/sock.h index d2a71b04a5ae..ca241ea14875 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1026,15 +1026,23 @@ extern void release_sock(struct sock *sk); SINGLE_DEPTH_NESTING) #define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock)) -static inline void lock_sock_bh(struct sock *sk) +extern bool lock_sock_fast(struct sock *sk); +/** + * unlock_sock_fast - complement of lock_sock_fast + * @sk: socket + * @slow: slow mode + * + * fast unlock socket for user context. + * If slow mode is on, we call regular release_sock() + */ +static inline void unlock_sock_fast(struct sock *sk, bool slow) { - spin_lock_bh(&sk->sk_lock.slock); + if (slow) + release_sock(sk); + else + spin_unlock_bh(&sk->sk_lock.slock); } -static inline void unlock_sock_bh(struct sock *sk) -{ - spin_unlock_bh(&sk->sk_lock.slock); -} extern struct sock *sk_alloc(struct net *net, int family, gfp_t priority, diff --git a/net/core/datagram.c b/net/core/datagram.c index e0097531417a..f5b6f43a4c2e 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -229,15 +229,17 @@ EXPORT_SYMBOL(skb_free_datagram); void skb_free_datagram_locked(struct sock *sk, struct sk_buff *skb) { + bool slow; + if (likely(atomic_read(&skb->users) == 1)) smp_rmb(); else if (likely(!atomic_dec_and_test(&skb->users))) return; - lock_sock_bh(sk); + slow = lock_sock_fast(sk); skb_orphan(skb); sk_mem_reclaim_partial(sk); - unlock_sock_bh(sk); + unlock_sock_fast(sk, slow); /* skb is now orphaned, can be freed outside of locked section */ __kfree_skb(skb); diff --git a/net/core/neighbour.c b/net/core/neighbour.c index bff37908bd55..6ba1c0eece03 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -934,6 +934,7 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb) kfree_skb(buff); NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards); } + skb_dst_force(skb); __skb_queue_tail(&neigh->arp_queue, skb); } rc = 1; diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 7ab86f3a1ea4..1a2af24e9e3d 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -650,11 +650,12 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev) if (dev->dev.parent && dev_is_pci(dev->dev.parent)) { int num_vfs = dev_num_vf(dev->dev.parent); - size_t size = nlmsg_total_size(sizeof(struct nlattr)); - size += nlmsg_total_size(num_vfs * sizeof(struct nlattr)); - size += num_vfs * (sizeof(struct ifla_vf_mac) + - sizeof(struct ifla_vf_vlan) + - sizeof(struct ifla_vf_tx_rate)); + size_t size = nla_total_size(sizeof(struct nlattr)); + size += nla_total_size(num_vfs * sizeof(struct nlattr)); + size += num_vfs * + (nla_total_size(sizeof(struct ifla_vf_mac)) + + nla_total_size(sizeof(struct ifla_vf_vlan)) + + nla_total_size(sizeof(struct ifla_vf_tx_rate))); return size; } else return 0; @@ -722,14 +723,13 @@ static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { vf_port = nla_nest_start(skb, IFLA_VF_PORT); - if (!vf_port) { - nla_nest_cancel(skb, vf_ports); - return -EMSGSIZE; - } + if (!vf_port) + goto nla_put_failure; NLA_PUT_U32(skb, IFLA_PORT_VF, vf); err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); + if (err == -EMSGSIZE) + goto nla_put_failure; if (err) { -nla_put_failure: nla_nest_cancel(skb, vf_port); continue; } @@ -739,6 +739,10 @@ nla_put_failure: nla_nest_end(skb, vf_ports); return 0; + +nla_put_failure: + nla_nest_cancel(skb, vf_ports); + return -EMSGSIZE; } static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) @@ -753,7 +757,7 @@ static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); if (err) { nla_nest_cancel(skb, port_self); - return err; + return (err == -EMSGSIZE) ? err : 0; } nla_nest_end(skb, port_self); diff --git a/net/core/sock.c b/net/core/sock.c index 37fe9b6adade..2cf7f9f7e775 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2007,6 +2007,39 @@ void release_sock(struct sock *sk) } EXPORT_SYMBOL(release_sock); +/** + * lock_sock_fast - fast version of lock_sock + * @sk: socket + * + * This version should be used for very small section, where process wont block + * return false if fast path is taken + * sk_lock.slock locked, owned = 0, BH disabled + * return true if slow path is taken + * sk_lock.slock unlocked, owned = 1, BH enabled + */ +bool lock_sock_fast(struct sock *sk) +{ + might_sleep(); + spin_lock_bh(&sk->sk_lock.slock); + + if (!sk->sk_lock.owned) + /* + * Note : We must disable BH + */ + return false; + + __lock_sock(sk); + sk->sk_lock.owned = 1; + spin_unlock(&sk->sk_lock.slock); + /* + * The sk_lock has mutex_lock() semantics here: + */ + mutex_acquire(&sk->sk_lock.dep_map, 0, 0, _RET_IP_); + local_bh_enable(); + return true; +} +EXPORT_SYMBOL(lock_sock_fast); + int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) { struct timeval tv; diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 45889103b3e2..856123fe32f9 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1911,7 +1911,7 @@ static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, struct rtattr *mp_head; /* If cache is unresolved, don't try to parse IIF and OIF */ - if (c->mfc_parent > MAXVIFS) + if (c->mfc_parent >= MAXVIFS) return -ENOENT; if (VIF_EXISTS(mrt, c->mfc_parent)) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index baeec29fe0f1..58585748bdac 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1063,10 +1063,11 @@ static unsigned int first_packet_length(struct sock *sk) spin_unlock_bh(&rcvq->lock); if (!skb_queue_empty(&list_kill)) { - lock_sock_bh(sk); + bool slow = lock_sock_fast(sk); + __skb_queue_purge(&list_kill); sk_mem_reclaim_partial(sk); - unlock_sock_bh(sk); + unlock_sock_fast(sk, slow); } return res; } @@ -1123,6 +1124,7 @@ int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, int peeked; int err; int is_udplite = IS_UDPLITE(sk); + bool slow; /* * Check any passed addresses @@ -1197,10 +1199,10 @@ out: return err; csum_copy_err: - lock_sock_bh(sk); + slow = lock_sock_fast(sk); if (!skb_kill_datagram(sk, skb, flags)) UDP_INC_STATS_USER(sock_net(sk), UDP_MIB_INERRORS, is_udplite); - unlock_sock_bh(sk); + unlock_sock_fast(sk, slow); if (noblock) return -EAGAIN; @@ -1625,9 +1627,9 @@ int udp_rcv(struct sk_buff *skb) void udp_destroy_sock(struct sock *sk) { - lock_sock_bh(sk); + bool slow = lock_sock_fast(sk); udp_flush_pending_frames(sk); - unlock_sock_bh(sk); + unlock_sock_fast(sk, slow); } /* diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index cd963f64e27c..89425af0684c 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -507,7 +507,7 @@ int ip6_forward(struct sk_buff *skb) if (mtu < IPV6_MIN_MTU) mtu = IPV6_MIN_MTU; - if (skb->len > mtu) { + if (skb->len > mtu && !skb_is_gso(skb)) { /* Again, force OUTPUT device used as source address */ skb->dev = dst->dev; icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index bd9e7d3e9c8e..073071f2b75b 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -2017,7 +2017,7 @@ static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb, struct rtattr *mp_head; /* If cache is unresolved, don't try to parse IIF and OIF */ - if (c->mf6c_parent > MAXMIFS) + if (c->mf6c_parent >= MAXMIFS) return -ENOENT; if (MIF_EXISTS(mrt, c->mf6c_parent)) diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 3d7a2c0b836a..87be58673b55 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -328,6 +328,7 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk, int err; int is_udplite = IS_UDPLITE(sk); int is_udp4; + bool slow; if (addr_len) *addr_len=sizeof(struct sockaddr_in6); @@ -424,7 +425,7 @@ out: return err; csum_copy_err: - lock_sock_bh(sk); + slow = lock_sock_fast(sk); if (!skb_kill_datagram(sk, skb, flags)) { if (is_udp4) UDP_INC_STATS_USER(sock_net(sk), @@ -433,7 +434,7 @@ csum_copy_err: UDP6_INC_STATS_USER(sock_net(sk), UDP_MIB_INERRORS, is_udplite); } - unlock_sock_bh(sk); + unlock_sock_fast(sk, slow); if (flags & MSG_DONTWAIT) return -EAGAIN; diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index c8b4599a752e..9637e45744fa 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1619,7 +1619,7 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg) save_message: save_msg = kzalloc(sizeof(struct sock_msg_q), GFP_ATOMIC | GFP_DMA); if (!save_msg) - return; + goto out_unlock; save_msg->path = path; save_msg->msg = *msg; diff --git a/net/netfilter/xt_TEE.c b/net/netfilter/xt_TEE.c index d7920d9f49e9..859d9fd429c8 100644 --- a/net/netfilter/xt_TEE.c +++ b/net/netfilter/xt_TEE.c @@ -76,7 +76,7 @@ tee_tg_route4(struct sk_buff *skb, const struct xt_tee_tginfo *info) if (ip_route_output_key(net, &rt, &fl) != 0) return false; - dst_release(skb_dst(skb)); + skb_dst_drop(skb); skb_dst_set(skb, &rt->u.dst); skb->dev = rt->u.dst.dev; skb->protocol = htons(ETH_P_IP); @@ -157,7 +157,7 @@ tee_tg_route6(struct sk_buff *skb, const struct xt_tee_tginfo *info) if (dst == NULL) return false; - dst_release(skb_dst(skb)); + skb_dst_drop(skb); skb_dst_set(skb, dst); skb->dev = dst->dev; skb->protocol = htons(ETH_P_IPV6);