diff options
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 7 | ||||
| -rw-r--r-- | drivers/net/netconsole.c | 5 | ||||
| -rw-r--r-- | drivers/net/pptp.c | 22 | ||||
| -rw-r--r-- | drivers/net/r8169.c | 90 | ||||
| -rw-r--r-- | drivers/net/smsc911x.c | 2 | ||||
| -rw-r--r-- | drivers/net/tg3.c | 2 | ||||
| -rw-r--r-- | include/net/ip_vs.h | 1 | ||||
| -rw-r--r-- | include/net/udplite.h | 63 | ||||
| -rw-r--r-- | net/bluetooth/l2cap_sock.c | 4 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/sock.c | 3 | ||||
| -rw-r--r-- | net/bluetooth/sco.c | 5 | ||||
| -rw-r--r-- | net/bridge/br_if.c | 9 | ||||
| -rw-r--r-- | net/bridge/br_netlink.c | 1 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/core/fib_rules.c | 5 | ||||
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 1 | ||||
| -rw-r--r-- | net/l2tp/l2tp_core.c | 4 | ||||
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_ctl.c | 131 | ||||
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_sync.c | 6 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_gre.c | 4 | ||||
| -rw-r--r-- | net/x25/af_x25.c | 40 | ||||
| -rw-r--r-- | net/x25/x25_dev.c | 6 | ||||
| -rw-r--r-- | net/x25/x25_facilities.c | 10 | ||||
| -rw-r--r-- | net/x25/x25_in.c | 43 | ||||
| -rw-r--r-- | net/x25/x25_link.c | 3 | ||||
| -rw-r--r-- | net/x25/x25_subr.c | 14 | ||||
| -rw-r--r-- | security/security.c | 1 |
28 files changed, 330 insertions, 155 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 5483e0c93b4b..b3bc88d9c03a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2460,7 +2460,7 @@ S: Supported F: drivers/infiniband/hw/ehca/ EHEA (IBM pSeries eHEA 10Gb ethernet adapter) DRIVER -M: Breno Leitao <leitao@linux.vnet.ibm.com> +M: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> L: netdev@vger.kernel.org S: Maintained F: drivers/net/ehea/ diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 6d79b78cfc75..de3d351ccb6b 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1435,6 +1435,8 @@ static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) struct sk_buff *skb = *pskb; struct slave *slave; struct bonding *bond; + void (*recv_probe)(struct sk_buff *, struct bonding *, + struct slave *); skb = skb_share_check(skb, GFP_ATOMIC); if (unlikely(!skb)) @@ -1448,11 +1450,12 @@ static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) if (bond->params.arp_interval) slave->dev->last_rx = jiffies; - if (bond->recv_probe) { + recv_probe = ACCESS_ONCE(bond->recv_probe); + if (recv_probe) { struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC); if (likely(nskb)) { - bond->recv_probe(nskb, bond, slave); + recv_probe(nskb, bond, slave); dev_kfree_skb(nskb); } } diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index ed2a3977c6e7..e8882023576b 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -307,6 +307,11 @@ static ssize_t store_enabled(struct netconsole_target *nt, return err; if (enabled < 0 || enabled > 1) return -EINVAL; + if (enabled == nt->enabled) { + printk(KERN_INFO "netconsole: network logging has already %s\n", + nt->enabled ? "started" : "stopped"); + return -EINVAL; + } if (enabled) { /* 1 */ diff --git a/drivers/net/pptp.c b/drivers/net/pptp.c index eae542a7e987..89f829f5f725 100644 --- a/drivers/net/pptp.c +++ b/drivers/net/pptp.c @@ -285,8 +285,10 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb) ip_send_check(iph); ip_local_out(skb); + return 1; tx_error: + kfree_skb(skb); return 1; } @@ -305,11 +307,18 @@ static int pptp_rcv_core(struct sock *sk, struct sk_buff *skb) } header = (struct pptp_gre_header *)(skb->data); + headersize = sizeof(*header); /* test if acknowledgement present */ if (PPTP_GRE_IS_A(header->ver)) { - __u32 ack = (PPTP_GRE_IS_S(header->flags)) ? - header->ack : header->seq; /* ack in different place if S = 0 */ + __u32 ack; + + if (!pskb_may_pull(skb, headersize)) + goto drop; + header = (struct pptp_gre_header *)(skb->data); + + /* ack in different place if S = 0 */ + ack = PPTP_GRE_IS_S(header->flags) ? header->ack : header->seq; ack = ntohl(ack); @@ -318,21 +327,18 @@ static int pptp_rcv_core(struct sock *sk, struct sk_buff *skb) /* also handle sequence number wrap-around */ if (WRAPPED(ack, opt->ack_recv)) opt->ack_recv = ack; + } else { + headersize -= sizeof(header->ack); } - /* test if payload present */ if (!PPTP_GRE_IS_S(header->flags)) goto drop; - headersize = sizeof(*header); payload_len = ntohs(header->payload_len); seq = ntohl(header->seq); - /* no ack present? */ - if (!PPTP_GRE_IS_A(header->ver)) - headersize -= sizeof(header->ack); /* check for incomplete packet (length smaller than expected) */ - if (skb->len - headersize < payload_len) + if (!pskb_may_pull(skb, headersize + payload_len)) goto drop; payload = skb->data + headersize; diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index c23667017922..6d657cabb951 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -2859,7 +2859,7 @@ static void rtl8168e_2_hw_phy_config(struct rtl8169_private *tp) rtl_writephy(tp, 0x1f, 0x0004); rtl_writephy(tp, 0x1f, 0x0007); rtl_writephy(tp, 0x1e, 0x0020); - rtl_w1w0_phy(tp, 0x06, 0x0000, 0x0100); + rtl_w1w0_phy(tp, 0x15, 0x0000, 0x0100); rtl_writephy(tp, 0x1f, 0x0002); rtl_writephy(tp, 0x1f, 0x0000); rtl_writephy(tp, 0x0d, 0x0007); @@ -3316,6 +3316,37 @@ static void __devinit rtl_init_mdio_ops(struct rtl8169_private *tp) } } +static void rtl_wol_suspend_quirk(struct rtl8169_private *tp) +{ + void __iomem *ioaddr = tp->mmio_addr; + + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_29: + case RTL_GIGA_MAC_VER_30: + case RTL_GIGA_MAC_VER_32: + case RTL_GIGA_MAC_VER_33: + case RTL_GIGA_MAC_VER_34: + RTL_W32(RxConfig, RTL_R32(RxConfig) | + AcceptBroadcast | AcceptMulticast | AcceptMyPhys); + break; + default: + break; + } +} + +static bool rtl_wol_pll_power_down(struct rtl8169_private *tp) +{ + if (!(__rtl8169_get_wol(tp) & WAKE_ANY)) + return false; + + rtl_writephy(tp, 0x1f, 0x0000); + rtl_writephy(tp, MII_BMCR, 0x0000); + + rtl_wol_suspend_quirk(tp); + + return true; +} + static void r810x_phy_power_down(struct rtl8169_private *tp) { rtl_writephy(tp, 0x1f, 0x0000); @@ -3330,18 +3361,8 @@ static void r810x_phy_power_up(struct rtl8169_private *tp) static void r810x_pll_power_down(struct rtl8169_private *tp) { - void __iomem *ioaddr = tp->mmio_addr; - - if (__rtl8169_get_wol(tp) & WAKE_ANY) { - rtl_writephy(tp, 0x1f, 0x0000); - rtl_writephy(tp, MII_BMCR, 0x0000); - - if (tp->mac_version == RTL_GIGA_MAC_VER_29 || - tp->mac_version == RTL_GIGA_MAC_VER_30) - RTL_W32(RxConfig, RTL_R32(RxConfig) | AcceptBroadcast | - AcceptMulticast | AcceptMyPhys); + if (rtl_wol_pll_power_down(tp)) return; - } r810x_phy_power_down(tp); } @@ -3430,17 +3451,8 @@ static void r8168_pll_power_down(struct rtl8169_private *tp) tp->mac_version == RTL_GIGA_MAC_VER_33) rtl_ephy_write(ioaddr, 0x19, 0xff64); - if (__rtl8169_get_wol(tp) & WAKE_ANY) { - rtl_writephy(tp, 0x1f, 0x0000); - rtl_writephy(tp, MII_BMCR, 0x0000); - - if (tp->mac_version == RTL_GIGA_MAC_VER_32 || - tp->mac_version == RTL_GIGA_MAC_VER_33 || - tp->mac_version == RTL_GIGA_MAC_VER_34) - RTL_W32(RxConfig, RTL_R32(RxConfig) | AcceptBroadcast | - AcceptMulticast | AcceptMyPhys); + if (rtl_wol_pll_power_down(tp)) return; - } r8168_phy_power_down(tp); @@ -5788,11 +5800,30 @@ static const struct dev_pm_ops rtl8169_pm_ops = { #endif /* !CONFIG_PM */ +static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp) +{ + void __iomem *ioaddr = tp->mmio_addr; + + /* WoL fails with 8168b when the receiver is disabled. */ + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_11: + case RTL_GIGA_MAC_VER_12: + case RTL_GIGA_MAC_VER_17: + pci_clear_master(tp->pci_dev); + + RTL_W8(ChipCmd, CmdRxEnb); + /* PCI commit */ + RTL_R8(ChipCmd); + break; + default: + break; + } +} + static void rtl_shutdown(struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); struct rtl8169_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->mmio_addr; rtl8169_net_suspend(dev); @@ -5806,16 +5837,9 @@ static void rtl_shutdown(struct pci_dev *pdev) spin_unlock_irq(&tp->lock); if (system_state == SYSTEM_POWER_OFF) { - /* WoL fails with 8168b when the receiver is disabled. */ - if ((tp->mac_version == RTL_GIGA_MAC_VER_11 || - tp->mac_version == RTL_GIGA_MAC_VER_12 || - tp->mac_version == RTL_GIGA_MAC_VER_17) && - (tp->features & RTL_FEATURE_WOL)) { - pci_clear_master(pdev); - - RTL_W8(ChipCmd, CmdRxEnb); - /* PCI commit */ - RTL_R8(ChipCmd); + if (__rtl8169_get_wol(tp) & WAKE_ANY) { + rtl_wol_suspend_quirk(tp); + rtl_wol_shutdown_quirk(tp); } pci_wake_from_d3(pdev, true); diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c index b9016a30cdc5..c90ddb61cc56 100644 --- a/drivers/net/smsc911x.c +++ b/drivers/net/smsc911x.c @@ -26,6 +26,7 @@ * LAN9215, LAN9216, LAN9217, LAN9218 * LAN9210, LAN9211 * LAN9220, LAN9221 + * LAN89218 * */ @@ -1983,6 +1984,7 @@ static int __devinit smsc911x_init(struct net_device *dev) case 0x01170000: case 0x01160000: case 0x01150000: + case 0x218A0000: /* LAN911[5678] family */ pdata->generation = pdata->idrev & 0x0000FFFF; break; diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 4a1374df6084..c11a2b8327f3 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -15577,7 +15577,7 @@ static void __devexit tg3_remove_one(struct pci_dev *pdev) cancel_work_sync(&tp->reset_task); - if (!tg3_flag(tp, USE_PHYLIB)) { + if (tg3_flag(tp, USE_PHYLIB)) { tg3_phy_fini(tp); tg3_mdio_fini(tp); } diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 1aaf915656f3..8fa4430f99c1 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -900,6 +900,7 @@ struct netns_ipvs { volatile int sync_state; volatile int master_syncid; volatile int backup_syncid; + struct mutex sync_mutex; /* multicast interface name */ char master_mcast_ifn[IP_VS_IFNAME_MAXLEN]; char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN]; diff --git a/include/net/udplite.h b/include/net/udplite.h index 673a024c6b2a..5f097ca7d5c5 100644 --- a/include/net/udplite.h +++ b/include/net/udplite.h @@ -66,40 +66,34 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh) return 0; } -static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh) +/* Slow-path computation of checksum. Socket is locked. */ +static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb) { + const struct udp_sock *up = udp_sk(skb->sk); int cscov = up->len; + __wsum csum = 0; - /* - * Sender has set `partial coverage' option on UDP-Lite socket - */ - if (up->pcflag & UDPLITE_SEND_CC) { + if (up->pcflag & UDPLITE_SEND_CC) { + /* + * Sender has set `partial coverage' option on UDP-Lite socket. + * The special case "up->pcslen == 0" signifies full coverage. + */ if (up->pcslen < up->len) { - /* up->pcslen == 0 means that full coverage is required, - * partial coverage only if 0 < up->pcslen < up->len */ - if (0 < up->pcslen) { - cscov = up->pcslen; - } - uh->len = htons(up->pcslen); + if (0 < up->pcslen) + cscov = up->pcslen; + udp_hdr(skb)->len = htons(up->pcslen); } - /* - * NOTE: Causes for the error case `up->pcslen > up->len': - * (i) Application error (will not be penalized). - * (ii) Payload too big for send buffer: data is split - * into several packets, each with its own header. - * In this case (e.g. last segment), coverage may - * exceed packet length. - * Since packets with coverage length > packet length are - * illegal, we fall back to the defaults here. - */ + /* + * NOTE: Causes for the error case `up->pcslen > up->len': + * (i) Application error (will not be penalized). + * (ii) Payload too big for send buffer: data is split + * into several packets, each with its own header. + * In this case (e.g. last segment), coverage may + * exceed packet length. + * Since packets with coverage length > packet length are + * illegal, we fall back to the defaults here. + */ } - return cscov; -} - -static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb) -{ - int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb)); - __wsum csum = 0; skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */ @@ -115,16 +109,21 @@ static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb) return csum; } +/* Fast-path computation of checksum. Socket may not be locked. */ static inline __wsum udplite_csum(struct sk_buff *skb) { - struct sock *sk = skb->sk; - int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb)); + const struct udp_sock *up = udp_sk(skb->sk); const int off = skb_transport_offset(skb); - const int len = skb->len - off; + int len = skb->len - off; + if ((up->pcflag & UDPLITE_SEND_CC) && up->pcslen < len) { + if (0 < up->pcslen) + len = up->pcslen; + udp_hdr(skb)->len = htons(up->pcslen); + } skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */ - return skb_checksum(skb, off, min(cscov, len), 0); + return skb_checksum(skb, off, len, 0); } extern void udplite4_register(void); diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 61f1f623091d..e8292369cdcf 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -26,6 +26,8 @@ /* Bluetooth L2CAP sockets. */ +#include <linux/security.h> + #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include <net/bluetooth/l2cap.h> @@ -933,6 +935,8 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent) chan->force_reliable = pchan->force_reliable; chan->flushable = pchan->flushable; chan->force_active = pchan->force_active; + + security_sk_clone(parent, sk); } else { switch (sk->sk_type) { diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index 482722bbc7a0..5417f6127323 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -42,6 +42,7 @@ #include <linux/device.h> #include <linux/debugfs.h> #include <linux/seq_file.h> +#include <linux/security.h> #include <net/sock.h> #include <asm/system.h> @@ -264,6 +265,8 @@ static void rfcomm_sock_init(struct sock *sk, struct sock *parent) pi->sec_level = rfcomm_pi(parent)->sec_level; pi->role_switch = rfcomm_pi(parent)->role_switch; + + security_sk_clone(parent, sk); } else { pi->dlc->defer_setup = 0; diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 8270f05e3f1f..a324b009e34b 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -41,6 +41,7 @@ #include <linux/debugfs.h> #include <linux/seq_file.h> #include <linux/list.h> +#include <linux/security.h> #include <net/sock.h> #include <asm/system.h> @@ -403,8 +404,10 @@ static void sco_sock_init(struct sock *sk, struct sock *parent) { BT_DBG("sk %p", sk); - if (parent) + if (parent) { sk->sk_type = parent->sk_type; + security_sk_clone(parent, sk); + } } static struct proto sco_proto = { diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index e73815456adf..1d420f64ff27 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -161,9 +161,10 @@ static void del_nbp(struct net_bridge_port *p) call_rcu(&p->rcu, destroy_nbp_rcu); } -/* called with RTNL */ -static void del_br(struct net_bridge *br, struct list_head *head) +/* Delete bridge device */ +void br_dev_delete(struct net_device *dev, struct list_head *head) { + struct net_bridge *br = netdev_priv(dev); struct net_bridge_port *p, *n; list_for_each_entry_safe(p, n, &br->port_list, list) { @@ -268,7 +269,7 @@ int br_del_bridge(struct net *net, const char *name) } else - del_br(netdev_priv(dev), NULL); + br_dev_delete(dev, NULL); rtnl_unlock(); return ret; @@ -449,7 +450,7 @@ void __net_exit br_net_exit(struct net *net) rtnl_lock(); for_each_netdev(net, dev) if (dev->priv_flags & IFF_EBRIDGE) - del_br(netdev_priv(dev), &list); + br_dev_delete(dev, &list); unregister_netdevice_many(&list); rtnl_unlock(); diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 5b1ed1ba9aa7..e5f9ece3c9a0 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -210,6 +210,7 @@ static struct rtnl_link_ops br_link_ops __read_mostly = { .priv_size = sizeof(struct net_bridge), .setup = br_dev_setup, .validate = br_validate, + .dellink = br_dev_delete, }; int __init br_netlink_init(void) diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 78cc364997d9..857a021deea9 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -294,6 +294,7 @@ static inline int br_is_root_bridge(const struct net_bridge *br) /* br_device.c */ extern void br_dev_setup(struct net_device *dev); +extern void br_dev_delete(struct net_device *dev, struct list_head *list); extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); #ifdef CONFIG_NET_POLL_CONTROLLER diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index 3231b468bb72..27071ee2a4e1 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -475,8 +475,11 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) list_del_rcu(&rule->list); - if (rule->action == FR_ACT_GOTO) + if (rule->action == FR_ACT_GOTO) { ops->nr_goto_rules--; + if (rtnl_dereference(rule->ctarget) == NULL) + ops->unresolved_rules--; + } /* * Check if this rule is a target to any of them. If so, diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index d2fe4e06b472..0ce3d06dce60 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -328,6 +328,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo) struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw); const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1); + tw->tw_transparent = inet_sk(sk)->transparent; tw->tw_rcv_wscale = tp->rx_opt.rcv_wscale; tcptw->tw_rcv_nxt = tp->rcv_nxt; tcptw->tw_snd_nxt = tp->snd_nxt; diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index ad4ac2601a56..34b2ddeacb67 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1045,8 +1045,10 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len headroom = NET_SKB_PAD + sizeof(struct iphdr) + uhlen + hdr_len; old_headroom = skb_headroom(skb); - if (skb_cow_head(skb, headroom)) + if (skb_cow_head(skb, headroom)) { + dev_kfree_skb(skb); goto abort; + } new_headroom = skb_headroom(skb); skb_orphan(skb); diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 5290ac353a5e..e3be48bf4dcd 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -2283,6 +2283,7 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) struct ip_vs_service *svc; struct ip_vs_dest_user *udest_compat; struct ip_vs_dest_user_kern udest; + struct netns_ipvs *ipvs = net_ipvs(net); if (!capable(CAP_NET_ADMIN)) return -EPERM; @@ -2303,6 +2304,24 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) /* increase the module use count */ ip_vs_use_count_inc(); + /* Handle daemons since they have another lock */ + if (cmd == IP_VS_SO_SET_STARTDAEMON || + cmd == IP_VS_SO_SET_STOPDAEMON) { + struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; + + if (mutex_lock_interruptible(&ipvs->sync_mutex)) { + ret = -ERESTARTSYS; + goto out_dec; + } + if (cmd == IP_VS_SO_SET_STARTDAEMON) + ret = start_sync_thread(net, dm->state, dm->mcast_ifn, + dm->syncid); + else + ret = stop_sync_thread(net, dm->state); + mutex_unlock(&ipvs->sync_mutex); + goto out_dec; + } + if (mutex_lock_interruptible(&__ip_vs_mutex)) { ret = -ERESTARTSYS; goto out_dec; @@ -2316,15 +2335,6 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) /* Set timeout values for (tcp tcpfin udp) */ ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); goto out_unlock; - } else if (cmd == IP_VS_SO_SET_STARTDAEMON) { - struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; - ret = start_sync_thread(net, dm->state, dm->mcast_ifn, - dm->syncid); - goto out_unlock; - } else if (cmd == IP_VS_SO_SET_STOPDAEMON) { - struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; - ret = stop_sync_thread(net, dm->state); - goto out_unlock; } usvc_compat = (struct ip_vs_service_user *)arg; @@ -2584,6 +2594,33 @@ do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) if (copy_from_user(arg, user, copylen) != 0) return -EFAULT; + /* + * Handle daemons first since it has its own locking + */ + if (cmd == IP_VS_SO_GET_DAEMON) { + struct ip_vs_daemon_user d[2]; + + memset(&d, 0, sizeof(d)); + if (mutex_lock_interruptible(&ipvs->sync_mutex)) + return -ERESTARTSYS; + + if (ipvs->sync_state & IP_VS_STATE_MASTER) { + d[0].state = IP_VS_STATE_MASTER; + strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, + sizeof(d[0].mcast_ifn)); + d[0].syncid = ipvs->master_syncid; + } + if (ipvs->sync_state & IP_VS_STATE_BACKUP) { + d[1].state = IP_VS_STATE_BACKUP; + strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, + sizeof(d[1].mcast_ifn)); + d[1].syncid = ipvs->backup_syncid; + } + if (copy_to_user(user, &d, sizeof(d)) != 0) + ret = -EFAULT; + mutex_unlock(&ipvs->sync_mutex); + return ret; + } if (mutex_lock_interruptible(&__ip_vs_mutex)) return -ERESTARTSYS; @@ -2681,28 +2718,6 @@ do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) } break; - case IP_VS_SO_GET_DAEMON: - { - struct ip_vs_daemon_user d[2]; - - memset(&d, 0, sizeof(d)); - if (ipvs->sync_state & IP_VS_STATE_MASTER) { - d[0].state = IP_VS_STATE_MASTER; - strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, - sizeof(d[0].mcast_ifn)); - d[0].syncid = ipvs->master_syncid; - } - if (ipvs->sync_state & IP_VS_STATE_BACKUP) { - d[1].state = IP_VS_STATE_BACKUP; - strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, - sizeof(d[1].mcast_ifn)); - d[1].syncid = ipvs->backup_syncid; - } - if (copy_to_user(user, &d, sizeof(d)) != 0) - ret = -EFAULT; - } - break; - default: ret = -EINVAL; } @@ -3205,7 +3220,7 @@ static int ip_vs_genl_dump_daemons(struct sk_buff *skb, struct net *net = skb_sknet(skb); struct netns_ipvs *ipvs = net_ipvs(net); - mutex_lock(&__ip_vs_mutex); + mutex_lock(&ipvs->sync_mutex); if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, ipvs->master_mcast_ifn, @@ -3225,7 +3240,7 @@ static int ip_vs_genl_dump_daemons(struct sk_buff *skb, } nla_put_failure: - mutex_unlock(&__ip_vs_mutex); + mutex_unlock(&ipvs->sync_mutex); return skb->len; } @@ -3271,13 +3286,9 @@ static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) return ip_vs_set_timeout(net, &t); } -static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) +static int ip_vs_genl_set_daemon(struct sk_buff *skb, struct genl_info *info) { - struct ip_vs_service *svc = NULL; - struct ip_vs_service_user_kern usvc; - struct ip_vs_dest_user_kern udest; int ret = 0, cmd; - int need_full_svc = 0, need_full_dest = 0; struct net *net; struct netns_ipvs *ipvs; @@ -3285,19 +3296,10 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) ipvs = net_ipvs(net); cmd = info->genlhdr->cmd; - mutex_lock(&__ip_vs_mutex); - - if (cmd == IPVS_CMD_FLUSH) { - ret = ip_vs_flush(net); - goto out; - } else if (cmd == IPVS_CMD_SET_CONFIG) { - ret = ip_vs_genl_set_config(net, info->attrs); - goto out; - } else if (cmd == IPVS_CMD_NEW_DAEMON || - cmd == IPVS_CMD_DEL_DAEMON) { - + if (cmd == IPVS_CMD_NEW_DAEMON || cmd == IPVS_CMD_DEL_DAEMON) { struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; + mutex_lock(&ipvs->sync_mutex); if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, info->attrs[IPVS_CMD_ATTR_DAEMON], @@ -3310,6 +3312,33 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) ret = ip_vs_genl_new_daemon(net, daemon_attrs); else ret = ip_vs_genl_del_daemon(net, daemon_attrs); +out: + mutex_unlock(&ipvs->sync_mutex); + } + return ret; +} + +static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) +{ + struct ip_vs_service *svc = NULL; + struct ip_vs_service_user_kern usvc; + struct ip_vs_dest_user_kern udest; + int ret = 0, cmd; + int need_full_svc = 0, need_full_dest = 0; + struct net *net; + struct netns_ipvs *ipvs; + + net = skb_sknet(skb); + ipvs = net_ipvs(net); + cmd = info->genlhdr->cmd; + + mutex_lock(&__ip_vs_mutex); + + if (cmd == IPVS_CMD_FLUSH) { + ret = ip_vs_flush(net); + goto out; + } else if (cmd == IPVS_CMD_SET_CONFIG) { + ret = ip_vs_genl_set_config(net, info->attrs); goto out; } else if (cmd == IPVS_CMD_ZERO && !info->attrs[IPVS_CMD_ATTR_SERVICE]) { @@ -3536,13 +3565,13 @@ static struct genl_ops ip_vs_genl_ops[] __read_mostly = { .cmd = IPVS_CMD_NEW_DAEMON, .flags = GENL_ADMIN_PERM, .policy = ip_vs_cmd_policy, - .doit = ip_vs_genl_set_cmd, + .doit = ip_vs_genl_set_daemon, }, { .cmd = IPVS_CMD_DEL_DAEMON, .flags = GENL_ADMIN_PERM, .policy = ip_vs_cmd_policy, - .doit = ip_vs_genl_set_cmd, + .doit = ip_vs_genl_set_daemon, }, { .cmd = IPVS_CMD_GET_DAEMON, diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c index 7ee7215b8ba0..3cdd479f9b5d 100644 --- a/net/netfilter/ipvs/ip_vs_sync.c +++ b/net/netfilter/ipvs/ip_vs_sync.c @@ -61,6 +61,7 @@ #define SYNC_PROTO_VER 1 /* Protocol version in header */ +static struct lock_class_key __ipvs_sync_key; /* * IPVS sync connection entry * Version 0, i.e. original version. @@ -1545,6 +1546,7 @@ int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid) IP_VS_DBG(7, "Each ip_vs_sync_conn entry needs %Zd bytes\n", sizeof(struct ip_vs_sync_conn_v0)); + if (state == IP_VS_STATE_MASTER) { if (ipvs->master_thread) return -EEXIST; @@ -1667,6 +1669,7 @@ int __net_init ip_vs_sync_net_init(struct net *net) { struct netns_ipvs *ipvs = net_ipvs(net); + __mutex_init(&ipvs->sync_mutex, "ipvs->sync_mutex", &__ipvs_sync_key); INIT_LIST_HEAD(&ipvs->sync_queue); spin_lock_init(&ipvs->sync_lock); spin_lock_init(&ipvs->sync_buff_lock); @@ -1680,7 +1683,9 @@ int __net_init ip_vs_sync_net_init(struct net *net) void ip_vs_sync_net_cleanup(struct net *net) { int retc; + struct netns_ipvs *ipvs = net_ipvs(net); + mutex_lock(&ipvs->sync_mutex); retc = stop_sync_thread(net, IP_VS_STATE_MASTER); if (retc && retc != -ESRCH) pr_err("Failed to stop Master Daemon\n"); @@ -1688,4 +1693,5 @@ void ip_vs_sync_net_cleanup(struct net *net) retc = stop_sync_thread(net, IP_VS_STATE_BACKUP); if (retc && retc != -ESRCH) pr_err("Failed to stop Backup Daemon\n"); + mutex_unlock(&ipvs->sync_mutex); } diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c index cf616e55ca41..d69facdd9a7a 100644 --- a/net/netfilter/nf_conntrack_proto_gre.c +++ b/net/netfilter/nf_conntrack_proto_gre.c @@ -241,8 +241,8 @@ static int gre_packet(struct nf_conn *ct, nf_ct_refresh_acct(ct, ctinfo, skb, ct->proto.gre.stream_timeout); /* Also, more likely to be important, and not a probe. */ - set_bit(IPS_ASSURED_BIT, &ct->status); - nf_conntrack_event_cache(IPCT_ASSURED, ct); + if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) + nf_conntrack_event_cache(IPCT_ASSURED, ct); } else nf_ct_refresh_acct(ct, ctinfo, skb, ct->proto.gre.timeout); diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index d30615419b4d..5f03e4ea65bf 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -91,7 +91,7 @@ int x25_parse_address_block(struct sk_buff *skb, int needed; int rc; - if (skb->len < 1) { + if (!pskb_may_pull(skb, 1)) { /* packet has no address block */ rc = 0; goto empty; @@ -100,7 +100,7 @@ int x25_parse_address_block(struct sk_buff *skb, len = *skb->data; needed = 1 + (len >> 4) + (len & 0x0f); - if (skb->len < needed) { + if (!pskb_may_pull(skb, needed)) { /* packet is too short to hold the addresses it claims to hold */ rc = -1; @@ -295,7 +295,8 @@ static struct sock *x25_find_listener(struct x25_address *addr, * Found a listening socket, now check the incoming * call user data vs this sockets call user data */ - if(skb->len > 0 && x25_sk(s)->cudmatchlength > 0) { + if (x25_sk(s)->cudmatchlength > 0 && + skb->len >= x25_sk(s)->cudmatchlength) { if((memcmp(x25_sk(s)->calluserdata.cuddata, skb->data, x25_sk(s)->cudmatchlength)) == 0) { @@ -951,14 +952,27 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, * * Facilities length is mandatory in call request packets */ - if (skb->len < 1) + if (!pskb_may_pull(skb, 1)) goto out_clear_request; len = skb->data[0] + 1; - if (skb->len < len) + if (!pskb_may_pull(skb, len)) goto out_clear_request; skb_pull(skb,len); /* + * Ensure that the amount of call user data is valid. + */ + if (skb->len > X25_MAX_CUD_LEN) + goto out_clear_request; + + /* + * Get all the call user data so it can be used in + * x25_find_listener and skb_copy_from_linear_data up ahead. + */ + if (!pskb_may_pull(skb, skb->len)) + goto out_clear_request; + + /* * Find a listener for the particular address/cud pair. */ sk = x25_find_listener(&source_addr,skb); @@ -1166,6 +1180,9 @@ static int x25_sendmsg(struct kiocb *iocb, struct socket *sock, * byte of the user data is the logical value of the Q Bit. */ if (test_bit(X25_Q_BIT_FLAG, &x25->flags)) { + if (!pskb_may_pull(skb, 1)) + goto out_kfree_skb; + qbit = skb->data[0]; skb_pull(skb, 1); } @@ -1244,7 +1261,9 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock, struct x25_sock *x25 = x25_sk(sk); struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)msg->msg_name; size_t copied; - int qbit; + int qbit, header_len = x25->neighbour->extended ? + X25_EXT_MIN_LEN : X25_STD_MIN_LEN; + struct sk_buff *skb; unsigned char *asmptr; int rc = -ENOTCONN; @@ -1265,6 +1284,9 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock, skb = skb_dequeue(&x25->interrupt_in_queue); + if (!pskb_may_pull(skb, X25_STD_MIN_LEN)) + goto out_free_dgram; + skb_pull(skb, X25_STD_MIN_LEN); /* @@ -1285,10 +1307,12 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock, if (!skb) goto out; + if (!pskb_may_pull(skb, header_len)) + goto out_free_dgram; + qbit = (skb->data[0] & X25_Q_BIT) == X25_Q_BIT; - skb_pull(skb, x25->neighbour->extended ? - X25_EXT_MIN_LEN : X25_STD_MIN_LEN); + skb_pull(skb, header_len); if (test_bit(X25_Q_BIT_FLAG, &x25->flags)) { asmptr = skb_push(skb, 1); diff --git a/net/x25/x25_dev.c b/net/x25/x25_dev.c index e547ca1578c3..fa2b41888bd9 100644 --- a/net/x25/x25_dev.c +++ b/net/x25/x25_dev.c @@ -32,6 +32,9 @@ static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *nb) unsigned short frametype; unsigned int lci; + if (!pskb_may_pull(skb, X25_STD_MIN_LEN)) + return 0; + frametype = skb->data[2]; lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF); @@ -115,6 +118,9 @@ int x25_lapb_receive_frame(struct sk_buff *skb, struct net_device *dev, goto drop; } + if (!pskb_may_pull(skb, 1)) + return 0; + switch (skb->data[0]) { case X25_IFACE_DATA: diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c index f77e4e75f914..36384a1fa9f2 100644 --- a/net/x25/x25_facilities.c +++ b/net/x25/x25_facilities.c @@ -44,7 +44,7 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities, struct x25_dte_facilities *dte_facs, unsigned long *vc_fac_mask) { - unsigned char *p = skb->data; + unsigned char *p; unsigned int len; *vc_fac_mask = 0; @@ -60,14 +60,16 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities, memset(dte_facs->called_ae, '\0', sizeof(dte_facs->called_ae)); memset(dte_facs->calling_ae, '\0', sizeof(dte_facs->calling_ae)); - if (skb->len < 1) + if (!pskb_may_pull(skb, 1)) return 0; - len = *p++; + len = skb->data[0]; - if (len >= skb->len) + if (!pskb_may_pull(skb, 1 + len)) return -1; + p = skb->data + 1; + while (len > 0) { switch (*p & X25_FAC_CLASS_MASK) { case X25_FAC_CLASS_A: diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c index 0b073b51b183..a49cd4ec551a 100644 --- a/net/x25/x25_in.c +++ b/net/x25/x25_in.c @@ -107,6 +107,8 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp /* * Parse the data in the frame. */ + if (!pskb_may_pull(skb, X25_STD_MIN_LEN)) + goto out_clear; skb_pull(skb, X25_STD_MIN_LEN); len = x25_parse_address_block(skb, &source_addr, @@ -127,9 +129,11 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp * Copy any Call User Data. */ if (skb->len > 0) { - skb_copy_from_linear_data(skb, - x25->calluserdata.cuddata, - skb->len); + if (skb->len > X25_MAX_CUD_LEN) + goto out_clear; + + skb_copy_bits(skb, 0, x25->calluserdata.cuddata, + skb->len); x25->calluserdata.cudlength = skb->len; } if (!sock_flag(sk, SOCK_DEAD)) @@ -137,6 +141,9 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp break; } case X25_CLEAR_REQUEST: + if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 2)) + goto out_clear; + x25_write_internal(sk, X25_CLEAR_CONFIRMATION); x25_disconnect(sk, ECONNREFUSED, skb->data[3], skb->data[4]); break; @@ -164,6 +171,9 @@ static int x25_state2_machine(struct sock *sk, struct sk_buff *skb, int frametyp switch (frametype) { case X25_CLEAR_REQUEST: + if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 2)) + goto out_clear; + x25_write_internal(sk, X25_CLEAR_CONFIRMATION); x25_disconnect(sk, 0, skb->data[3], skb->data[4]); break; @@ -177,6 +187,11 @@ static int x25_state2_machine(struct sock *sk, struct sk_buff *skb, int frametyp } return 0; + +out_clear: + x25_write_internal(sk, X25_CLEAR_REQUEST); + x25_start_t23timer(sk); + return 0; } /* @@ -206,6 +221,9 @@ static int x25_state3_machine(struct sock *sk, struct sk_buff *skb, int frametyp break; case X25_CLEAR_REQUEST: + if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 2)) + goto out_clear; + x25_write_internal(sk, X25_CLEAR_CONFIRMATION); x25_disconnect(sk, 0, skb->data[3], skb->data[4]); break; @@ -304,6 +322,12 @@ static int x25_state3_machine(struct sock *sk, struct sk_buff *skb, int frametyp } return queued; + +out_clear: + x25_write_internal(sk, X25_CLEAR_REQUEST); + x25->state = X25_STATE_2; + x25_start_t23timer(sk); + return 0; } /* @@ -313,13 +337,13 @@ static int x25_state3_machine(struct sock *sk, struct sk_buff *skb, int frametyp */ static int x25_state4_machine(struct sock *sk, struct sk_buff *skb, int frametype) { + struct x25_sock *x25 = x25_sk(sk); + switch (frametype) { case X25_RESET_REQUEST: x25_write_internal(sk, X25_RESET_CONFIRMATION); case X25_RESET_CONFIRMATION: { - struct x25_sock *x25 = x25_sk(sk); - x25_stop_timer(sk); x25->condition = 0x00; x25->va = 0; @@ -331,6 +355,9 @@ static int x25_state4_machine(struct sock *sk, struct sk_buff *skb, int frametyp break; } case X25_CLEAR_REQUEST: + if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 2)) + goto out_clear; + x25_write_internal(sk, X25_CLEAR_CONFIRMATION); x25_disconnect(sk, 0, skb->data[3], skb->data[4]); break; @@ -340,6 +367,12 @@ static int x25_state4_machine(struct sock *sk, struct sk_buff *skb, int frametyp } return 0; + +out_clear: + x25_write_internal(sk, X25_CLEAR_REQUEST); + x25->state = X25_STATE_2; + x25_start_t23timer(sk); + return 0; } /* Higher level upcall for a LAPB frame */ diff --git a/net/x25/x25_link.c b/net/x25/x25_link.c index 037958ff8eed..4acacf3c6617 100644 --- a/net/x25/x25_link.c +++ b/net/x25/x25_link.c @@ -90,6 +90,9 @@ void x25_link_control(struct sk_buff *skb, struct x25_neigh *nb, break; case X25_DIAGNOSTIC: + if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 4)) + break; + printk(KERN_WARNING "x25: diagnostic #%d - %02X %02X %02X\n", skb->data[3], skb->data[4], skb->data[5], skb->data[6]); diff --git a/net/x25/x25_subr.c b/net/x25/x25_subr.c index 24a342ebc7f5..5170d52bfd96 100644 --- a/net/x25/x25_subr.c +++ b/net/x25/x25_subr.c @@ -269,7 +269,11 @@ int x25_decode(struct sock *sk, struct sk_buff *skb, int *ns, int *nr, int *q, int *d, int *m) { struct x25_sock *x25 = x25_sk(sk); - unsigned char *frame = skb->data; + unsigned char *frame; + + if (!pskb_may_pull(skb, X25_STD_MIN_LEN)) + return X25_ILLEGAL; + frame = skb->data; *ns = *nr = *q = *d = *m = 0; @@ -294,6 +298,10 @@ int x25_decode(struct sock *sk, struct sk_buff *skb, int *ns, int *nr, int *q, if (frame[2] == X25_RR || frame[2] == X25_RNR || frame[2] == X25_REJ) { + if (!pskb_may_pull(skb, X25_EXT_MIN_LEN)) + return X25_ILLEGAL; + frame = skb->data; + *nr = (frame[3] >> 1) & 0x7F; return frame[2]; } @@ -308,6 +316,10 @@ int x25_decode(struct sock *sk, struct sk_buff *skb, int *ns, int *nr, int *q, if (x25->neighbour->extended) { if ((frame[2] & 0x01) == X25_DATA) { + if (!pskb_may_pull(skb, X25_EXT_MIN_LEN)) + return X25_ILLEGAL; + frame = skb->data; + *q = (frame[0] & X25_Q_BIT) == X25_Q_BIT; *d = (frame[0] & X25_D_BIT) == X25_D_BIT; *m = (frame[3] & X25_EXT_M_BIT) == X25_EXT_M_BIT; diff --git a/security/security.c b/security/security.c index 0e4fccfef12c..d9e153390926 100644 --- a/security/security.c +++ b/security/security.c @@ -1097,6 +1097,7 @@ void security_sk_clone(const struct sock *sk, struct sock *newsk) { security_ops->sk_clone_security(sk, newsk); } +EXPORT_SYMBOL(security_sk_clone); void security_sk_classify_flow(struct sock *sk, struct flowi *fl) { |