diff options
Diffstat (limited to 'net')
-rw-r--r-- | net/802/tr.c | 26 | ||||
-rw-r--r-- | net/bridge/br_device.c | 15 | ||||
-rw-r--r-- | net/bridge/br_if.c | 23 | ||||
-rw-r--r-- | net/bridge/br_input.c | 8 | ||||
-rw-r--r-- | net/bridge/br_notify.c | 9 | ||||
-rw-r--r-- | net/bridge/br_private.h | 1 | ||||
-rw-r--r-- | net/bridge/br_stp_bpdu.c | 3 | ||||
-rw-r--r-- | net/core/dev.c | 12 | ||||
-rw-r--r-- | net/core/ethtool.c | 20 | ||||
-rw-r--r-- | net/core/net-sysfs.c | 3 | ||||
-rw-r--r-- | net/ipv4/devinet.c | 34 | ||||
-rw-r--r-- | net/ipv4/multipath_drr.c | 18 | ||||
-rw-r--r-- | net/ipv4/multipath_rr.c | 20 | ||||
-rw-r--r-- | net/ipv6/ip6_flowlabel.c | 10 | ||||
-rw-r--r-- | net/ipv6/xfrm6_policy.c | 4 | ||||
-rw-r--r-- | net/sched/sch_netem.c | 209 | ||||
-rw-r--r-- | net/xfrm/xfrm_policy.c | 4 |
17 files changed, 231 insertions, 188 deletions
diff --git a/net/802/tr.c b/net/802/tr.c index 85293cc..a755e88 100644 --- a/net/802/tr.c +++ b/net/802/tr.c @@ -47,12 +47,12 @@ static void rif_check_expire(unsigned long dummy); * Each RIF entry we learn is kept this way */ -struct rif_cache_s { +struct rif_cache { unsigned char addr[TR_ALEN]; int iface; - __u16 rcf; - __u16 rseg[8]; - struct rif_cache_s *next; + __be16 rcf; + __be16 rseg[8]; + struct rif_cache *next; unsigned long last_used; unsigned char local_ring; }; @@ -64,7 +64,7 @@ struct rif_cache_s { * up a lot. */ -static struct rif_cache_s *rif_table[RIF_TABLE_SIZE]; +static struct rif_cache *rif_table[RIF_TABLE_SIZE]; static DEFINE_SPINLOCK(rif_lock); @@ -249,7 +249,7 @@ void tr_source_route(struct sk_buff *skb,struct trh_hdr *trh,struct net_device * { int slack; unsigned int hash; - struct rif_cache_s *entry; + struct rif_cache *entry; unsigned char *olddata; static const unsigned char mcast_func_addr[] = {0xC0,0x00,0x00,0x04,0x00,0x00}; @@ -337,7 +337,7 @@ printk("source routing for %02X:%02X:%02X:%02X:%02X:%02X\n",trh->daddr[0], static void tr_add_rif_info(struct trh_hdr *trh, struct net_device *dev) { unsigned int hash, rii_p = 0; - struct rif_cache_s *entry; + struct rif_cache *entry; spin_lock_bh(&rif_lock); @@ -373,7 +373,7 @@ printk("adding rif_entry: addr:%02X:%02X:%02X:%02X:%02X:%02X rcf:%04X\n", * FIXME: We ought to keep some kind of cache size * limiting and adjust the timers to suit. */ - entry=kmalloc(sizeof(struct rif_cache_s),GFP_ATOMIC); + entry=kmalloc(sizeof(struct rif_cache),GFP_ATOMIC); if(!entry) { @@ -435,7 +435,7 @@ static void rif_check_expire(unsigned long dummy) spin_lock_bh(&rif_lock); for(i =0; i < RIF_TABLE_SIZE; i++) { - struct rif_cache_s *entry, **pentry; + struct rif_cache *entry, **pentry; pentry = rif_table+i; while((entry=*pentry) != NULL) { @@ -467,10 +467,10 @@ static void rif_check_expire(unsigned long dummy) #ifdef CONFIG_PROC_FS -static struct rif_cache_s *rif_get_idx(loff_t pos) +static struct rif_cache *rif_get_idx(loff_t pos) { int i; - struct rif_cache_s *entry; + struct rif_cache *entry; loff_t off = 0; for(i = 0; i < RIF_TABLE_SIZE; i++) @@ -493,7 +493,7 @@ static void *rif_seq_start(struct seq_file *seq, loff_t *pos) static void *rif_seq_next(struct seq_file *seq, void *v, loff_t *pos) { int i; - struct rif_cache_s *ent = v; + struct rif_cache *ent = v; ++*pos; @@ -522,7 +522,7 @@ static void rif_seq_stop(struct seq_file *seq, void *v) static int rif_seq_show(struct seq_file *seq, void *v) { int j, rcf_len, segment, brdgnmb; - struct rif_cache_s *entry = v; + struct rif_cache *entry = v; if (v == SEQ_START_TOKEN) seq_puts(seq, diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index d9b72fd..f564ee9 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -21,10 +21,7 @@ static struct net_device_stats *br_dev_get_stats(struct net_device *dev) { - struct net_bridge *br; - - br = dev->priv; - + struct net_bridge *br = netdev_priv(dev); return &br->statistics; } @@ -54,9 +51,11 @@ int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) static int br_dev_open(struct net_device *dev) { - netif_start_queue(dev); + struct net_bridge *br = netdev_priv(dev); - br_stp_enable_bridge(dev->priv); + br_features_recompute(br); + netif_start_queue(dev); + br_stp_enable_bridge(br); return 0; } @@ -67,7 +66,7 @@ static void br_dev_set_multicast_list(struct net_device *dev) static int br_dev_stop(struct net_device *dev) { - br_stp_disable_bridge(dev->priv); + br_stp_disable_bridge(netdev_priv(dev)); netif_stop_queue(dev); @@ -76,7 +75,7 @@ static int br_dev_stop(struct net_device *dev) static int br_change_mtu(struct net_device *dev, int new_mtu) { - if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv)) + if (new_mtu < 68 || new_mtu > br_min_mtu(netdev_priv(dev))) return -EINVAL; dev->mtu = new_mtu; diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 69872bf..91bb895 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -314,6 +314,28 @@ int br_min_mtu(const struct net_bridge *br) return mtu; } +/* + * Recomputes features using slave's features + */ +void br_features_recompute(struct net_bridge *br) +{ + struct net_bridge_port *p; + unsigned long features, checksum; + + features = NETIF_F_SG | NETIF_F_FRAGLIST + | NETIF_F_HIGHDMA | NETIF_F_TSO; + checksum = NETIF_F_IP_CSUM; /* least commmon subset */ + + list_for_each_entry(p, &br->port_list, list) { + if (!(p->dev->features + & (NETIF_F_IP_CSUM|NETIF_F_NO_CSUM|NETIF_F_HW_CSUM))) + checksum = 0; + features &= p->dev->features; + } + + br->dev->features = features | checksum | NETIF_F_LLTX; +} + /* called with RTNL */ int br_add_if(struct net_bridge *br, struct net_device *dev) { @@ -368,6 +390,7 @@ int br_del_if(struct net_bridge *br, struct net_device *dev) spin_lock_bh(&br->lock); br_stp_recalculate_bridge_id(br); + br_features_recompute(br); spin_unlock_bh(&br->lock); return 0; diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 2b1cce4..8f5f2e7 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -26,7 +26,7 @@ static int br_pass_frame_up_finish(struct sk_buff *skb) #ifdef CONFIG_NETFILTER_DEBUG skb->nf_debug = 0; #endif - netif_rx(skb); + netif_receive_skb(skb); return 0; } @@ -54,6 +54,9 @@ int br_handle_frame_finish(struct sk_buff *skb) struct net_bridge_fdb_entry *dst; int passedup = 0; + /* insert into forwarding database after filtering to avoid spoofing */ + br_fdb_update(p->br, p, eth_hdr(skb)->h_source); + if (br->dev->flags & IFF_PROMISC) { struct sk_buff *skb2; @@ -108,8 +111,7 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb) if (!is_valid_ether_addr(eth_hdr(skb)->h_source)) goto err; - if (p->state == BR_STATE_LEARNING || - p->state == BR_STATE_FORWARDING) + if (p->state == BR_STATE_LEARNING) br_fdb_update(p->br, p, eth_hdr(skb)->h_source); if (p->br->stp_enabled && diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c index f8fb49e..917311c 100644 --- a/net/bridge/br_notify.c +++ b/net/bridge/br_notify.c @@ -65,6 +65,15 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v } break; + case NETDEV_FEAT_CHANGE: + if (br->dev->flags & IFF_UP) + br_features_recompute(br); + + /* could do recursive feature change notification + * but who would care?? + */ + break; + case NETDEV_DOWN: if (br->dev->flags & IFF_UP) br_stp_disable_port(p); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 54d63f13..bdf95a7 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -174,6 +174,7 @@ extern int br_add_if(struct net_bridge *br, extern int br_del_if(struct net_bridge *br, struct net_device *dev); extern int br_min_mtu(const struct net_bridge *br); +extern void br_features_recompute(struct net_bridge *br); /* br_input.c */ extern int br_handle_frame_finish(struct sk_buff *skb); diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c index b91a875..d071f1c 100644 --- a/net/bridge/br_stp_bpdu.c +++ b/net/bridge/br_stp_bpdu.c @@ -140,6 +140,9 @@ int br_stp_handle_bpdu(struct sk_buff *skb) struct net_bridge *br = p->br; unsigned char *buf; + /* insert into forwarding database after filtering to avoid spoofing */ + br_fdb_update(p->br, p, eth_hdr(skb)->h_source); + /* need at least the 802 and STP headers */ if (!pskb_may_pull(skb, sizeof(header)+1) || memcmp(skb->data, header, sizeof(header))) diff --git a/net/core/dev.c b/net/core/dev.c index d4d9e26..f15a3ff 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -761,6 +761,18 @@ int dev_change_name(struct net_device *dev, char *newname) } /** + * netdev_features_change - device changes fatures + * @dev: device to cause notification + * + * Called to indicate a device has changed features. + */ +void netdev_features_change(struct net_device *dev) +{ + notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev); +} +EXPORT_SYMBOL(netdev_features_change); + +/** * netdev_state_change - device changes state * @dev: device to cause notification * diff --git a/net/core/ethtool.c b/net/core/ethtool.c index f05fde9..8ec4848 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -29,7 +29,7 @@ u32 ethtool_op_get_link(struct net_device *dev) u32 ethtool_op_get_tx_csum(struct net_device *dev) { - return (dev->features & NETIF_F_IP_CSUM) != 0; + return (dev->features & (NETIF_F_IP_CSUM | NETIF_F_HW_CSUM)) != 0; } int ethtool_op_set_tx_csum(struct net_device *dev, u32 data) @@ -42,6 +42,15 @@ int ethtool_op_set_tx_csum(struct net_device *dev, u32 data) return 0; } +int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data) +{ + if (data) + dev->features |= NETIF_F_HW_CSUM; + else + dev->features &= ~NETIF_F_HW_CSUM; + + return 0; +} u32 ethtool_op_get_sg(struct net_device *dev) { return (dev->features & NETIF_F_SG) != 0; @@ -682,6 +691,7 @@ int dev_ethtool(struct ifreq *ifr) void __user *useraddr = ifr->ifr_data; u32 ethcmd; int rc; + unsigned long old_features; /* * XXX: This can be pushed down into the ethtool_* handlers that @@ -703,6 +713,8 @@ int dev_ethtool(struct ifreq *ifr) if ((rc = dev->ethtool_ops->begin(dev)) < 0) return rc; + old_features = dev->features; + switch (ethcmd) { case ETHTOOL_GSET: rc = ethtool_get_settings(dev, useraddr); @@ -712,7 +724,6 @@ int dev_ethtool(struct ifreq *ifr) break; case ETHTOOL_GDRVINFO: rc = ethtool_get_drvinfo(dev, useraddr); - break; case ETHTOOL_GREGS: rc = ethtool_get_regs(dev, useraddr); @@ -801,6 +812,10 @@ int dev_ethtool(struct ifreq *ifr) if(dev->ethtool_ops->complete) dev->ethtool_ops->complete(dev); + + if (old_features != dev->features) + netdev_features_change(dev); + return rc; ioctl: @@ -817,3 +832,4 @@ EXPORT_SYMBOL(ethtool_op_get_tx_csum); EXPORT_SYMBOL(ethtool_op_set_sg); EXPORT_SYMBOL(ethtool_op_set_tso); EXPORT_SYMBOL(ethtool_op_set_tx_csum); +EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 060f703..910eb4c 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -21,6 +21,7 @@ #define to_net_dev(class) container_of(class, struct net_device, class_dev) static const char fmt_hex[] = "%#x\n"; +static const char fmt_long_hex[] = "%#lx\n"; static const char fmt_dec[] = "%d\n"; static const char fmt_ulong[] = "%lu\n"; @@ -91,7 +92,7 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO, show_##field, NULL) \ NETDEVICE_ATTR(addr_len, fmt_dec); NETDEVICE_ATTR(iflink, fmt_dec); NETDEVICE_ATTR(ifindex, fmt_dec); -NETDEVICE_ATTR(features, fmt_hex); +NETDEVICE_ATTR(features, fmt_long_hex); NETDEVICE_ATTR(type, fmt_dec); /* use same locking rules as GIFHWADDR ioctl's */ diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 3cc9673..478a301 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -233,11 +233,14 @@ int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b) static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, int destroy) { + struct in_ifaddr *promote = NULL; struct in_ifaddr *ifa1 = *ifap; ASSERT_RTNL(); - /* 1. Deleting primary ifaddr forces deletion all secondaries */ + /* 1. Deleting primary ifaddr forces deletion all secondaries + * unless alias promotion is set + **/ if (!(ifa1->ifa_flags & IFA_F_SECONDARY)) { struct in_ifaddr *ifa; @@ -251,11 +254,16 @@ static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, continue; } - *ifap1 = ifa->ifa_next; + if (!IN_DEV_PROMOTE_SECONDARIES(in_dev)) { + *ifap1 = ifa->ifa_next; - rtmsg_ifa(RTM_DELADDR, ifa); - notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa); - inet_free_ifa(ifa); + rtmsg_ifa(RTM_DELADDR, ifa); + notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa); + inet_free_ifa(ifa); + } else { + promote = ifa; + break; + } } } @@ -281,6 +289,13 @@ static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, if (!in_dev->ifa_list) inetdev_destroy(in_dev); } + + if (promote && IN_DEV_PROMOTE_SECONDARIES(in_dev)) { + /* not sure if we should send a delete notify first? */ + promote->ifa_flags &= ~IFA_F_SECONDARY; + rtmsg_ifa(RTM_NEWADDR, promote); + notifier_call_chain(&inetaddr_chain, NETDEV_UP, promote); + } } static int inet_insert_ifa(struct in_ifaddr *ifa) @@ -1384,6 +1399,15 @@ static struct devinet_sysctl_table { .proc_handler = &ipv4_doint_and_flush, .strategy = &ipv4_doint_and_flush_strategy, }, + { + .ctl_name = NET_IPV4_CONF_PROMOTE_SECONDARIES, + .procname = "promote_secondaries", + .data = &ipv4_devconf.promote_secondaries, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &ipv4_doint_and_flush, + .strategy = &ipv4_doint_and_flush_strategy, + }, }, .devinet_dev = { { diff --git a/net/ipv4/multipath_drr.c b/net/ipv4/multipath_drr.c index 9349686..cf2e6bc 100644 --- a/net/ipv4/multipath_drr.c +++ b/net/ipv4/multipath_drr.c @@ -57,7 +57,6 @@ struct multipath_device { static struct multipath_device state[MULTIPATH_MAX_DEVICECANDIDATES]; static DEFINE_SPINLOCK(state_lock); -static struct rtable *last_selection = NULL; static int inline __multipath_findslot(void) { @@ -111,11 +110,6 @@ struct notifier_block drr_dev_notifier = { .notifier_call = drr_dev_event, }; -static void drr_remove(struct rtable *rt) -{ - if (last_selection == rt) - last_selection = NULL; -} static void drr_safe_inc(atomic_t *usecount) { @@ -144,14 +138,6 @@ static void drr_select_route(const struct flowi *flp, int devidx = -1; int cur_min_devidx = -1; - /* if necessary and possible utilize the old alternative */ - if ((flp->flags & FLOWI_FLAG_MULTIPATHOLDROUTE) != 0 && - last_selection != NULL) { - result = last_selection; - *rp = result; - return; - } - /* 1. make sure all alt. nexthops have the same GC related data */ /* 2. determine the new candidate to be returned */ result = NULL; @@ -229,12 +215,10 @@ static void drr_select_route(const struct flowi *flp, } *rp = result; - last_selection = result; } static struct ip_mp_alg_ops drr_ops = { .mp_alg_select_route = drr_select_route, - .mp_alg_remove = drr_remove, }; static int __init drr_init(void) @@ -244,7 +228,7 @@ static int __init drr_init(void) if (err) return err; - err = multipath_alg_register(&drr_ops, IP_MP_ALG_RR); + err = multipath_alg_register(&drr_ops, IP_MP_ALG_DRR); if (err) goto fail; diff --git a/net/ipv4/multipath_rr.c b/net/ipv4/multipath_rr.c index 554a8256..061b6b2 100644 --- a/net/ipv4/multipath_rr.c +++ b/net/ipv4/multipath_rr.c @@ -47,29 +47,12 @@ #include <net/checksum.h> #include <net/ip_mp_alg.h> -#define MULTIPATH_MAX_CANDIDATES 40 - -static struct rtable* last_used = NULL; - -static void rr_remove(struct rtable *rt) -{ - if (last_used == rt) - last_used = NULL; -} - static void rr_select_route(const struct flowi *flp, struct rtable *first, struct rtable **rp) { struct rtable *nh, *result, *min_use_cand = NULL; int min_use = -1; - /* if necessary and possible utilize the old alternative */ - if ((flp->flags & FLOWI_FLAG_MULTIPATHOLDROUTE) != 0 && - last_used != NULL) { - result = last_used; - goto out; - } - /* 1. make sure all alt. nexthops have the same GC related data * 2. determine the new candidate to be returned */ @@ -90,15 +73,12 @@ static void rr_select_route(const struct flowi *flp, if (!result) result = first; -out: - last_used = result; result->u.dst.__use++; *rp = result; } static struct ip_mp_alg_ops rr_ops = { .mp_alg_select_route = rr_select_route, - .mp_alg_remove = rr_remove, }; static int __init rr_init(void) diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index a93f6dc..0e5f7499 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -535,10 +535,12 @@ release: if (err) goto done; - /* Do not check for fault */ - if (!freq.flr_label) - copy_to_user(&((struct in6_flowlabel_req __user *) optval)->flr_label, - &fl->label, sizeof(fl->label)); + if (!freq.flr_label) { + if (copy_to_user(&((struct in6_flowlabel_req __user *) optval)->flr_label, + &fl->label, sizeof(fl->label))) { + /* Intentionally ignore fault. */ + } + } sfl1->fl = fl; sfl1->next = np->ipv6_fl_list; diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index 4429b1a..cf1d91e 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -113,6 +113,8 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int xdst = (struct xfrm_dst *)dst1; xdst->route = &rt->u.dst; + if (rt->rt6i_node) + xdst->route_cookie = rt->rt6i_node->fn_sernum; dst1->next = dst_prev; dst_prev = dst1; @@ -137,6 +139,8 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int dst_prev->child = &rt->u.dst; dst->path = &rt->u.dst; + if (rt->rt6i_node) + ((struct xfrm_dst *)dst)->path_cookie = rt->rt6i_node->fn_sernum; *dst_p = dst; dst = dst_prev; diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index e0c9fbe..bb9bf8d 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -53,7 +53,6 @@ struct netem_sched_data { struct Qdisc *qdisc; - struct sk_buff_head delayed; struct timer_list timer; u32 latency; @@ -63,11 +62,12 @@ struct netem_sched_data { u32 gap; u32 jitter; u32 duplicate; + u32 reorder; struct crndstate { unsigned long last; unsigned long rho; - } delay_cor, loss_cor, dup_cor; + } delay_cor, loss_cor, dup_cor, reorder_cor; struct disttable { u32 size; @@ -137,122 +137,68 @@ static long tabledist(unsigned long mu, long sigma, return x / NETEM_DIST_SCALE + (sigma / NETEM_DIST_SCALE) * t + mu; } -/* Put skb in the private delayed queue. */ -static int netem_delay(struct Qdisc *sch, struct sk_buff *skb) -{ - struct netem_sched_data *q = qdisc_priv(sch); - psched_tdiff_t td; - psched_time_t now; - - PSCHED_GET_TIME(now); - td = tabledist(q->latency, q->jitter, &q->delay_cor, q->delay_dist); - - /* Always queue at tail to keep packets in order */ - if (likely(q->delayed.qlen < q->limit)) { - struct netem_skb_cb *cb = (struct netem_skb_cb *)skb->cb; - - PSCHED_TADD2(now, td, cb->time_to_send); - - pr_debug("netem_delay: skb=%p now=%llu tosend=%llu\n", skb, - now, cb->time_to_send); - - __skb_queue_tail(&q->delayed, skb); - return NET_XMIT_SUCCESS; - } - - pr_debug("netem_delay: queue over limit %d\n", q->limit); - sch->qstats.overlimits++; - kfree_skb(skb); - return NET_XMIT_DROP; -} - /* - * Move a packet that is ready to send from the delay holding - * list to the underlying qdisc. + * Insert one skb into qdisc. + * Note: parent depends on return value to account for queue length. + * NET_XMIT_DROP: queue length didn't change. + * NET_XMIT_SUCCESS: one skb was queued. */ -static int netem_run(struct Qdisc *sch) -{ - struct netem_sched_data *q = qdisc_priv(sch); - struct sk_buff *skb; - psched_time_t now; - - PSCHED_GET_TIME(now); - - skb = skb_peek(&q->delayed); - if (skb) { - const struct netem_skb_cb *cb - = (const struct netem_skb_cb *)skb->cb; - long delay - = PSCHED_US2JIFFIE(PSCHED_TDIFF(cb->time_to_send, now)); - pr_debug("netem_run: skb=%p delay=%ld\n", skb, delay); - - /* if more time remaining? */ - if (delay > 0) { - mod_timer(&q->timer, jiffies + delay); - return 1; - } - - __skb_unlink(skb, &q->delayed); - - if (q->qdisc->enqueue(skb, q->qdisc)) { - sch->q.qlen--; - sch->qstats.drops++; - } - } - - return 0; -} - static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch) { struct netem_sched_data *q = qdisc_priv(sch); + struct netem_skb_cb *cb = (struct netem_skb_cb *)skb->cb; + struct sk_buff *skb2; int ret; + int count = 1; pr_debug("netem_enqueue skb=%p\n", skb); + /* Random duplication */ + if (q->duplicate && q->duplicate >= get_crandom(&q->dup_cor)) + ++count; + /* Random packet drop 0 => none, ~0 => all */ - if (q->loss && q->loss >= get_crandom(&q->loss_cor)) { - pr_debug("netem_enqueue: random loss\n"); + if (q->loss && q->loss >= get_crandom(&q->loss_cor)) + --count; + + if (count == 0) { sch->qstats.drops++; kfree_skb(skb); - return 0; /* lie about loss so TCP doesn't know */ + return NET_XMIT_DROP; } - /* Random duplication */ - if (q->duplicate && q->duplicate >= get_crandom(&q->dup_cor)) { - struct sk_buff *skb2; - - skb2 = skb_clone(skb, GFP_ATOMIC); - if (skb2 && netem_delay(sch, skb2) == NET_XMIT_SUCCESS) { - struct Qdisc *qp; - - /* Since one packet can generate two packets in the - * queue, the parent's qlen accounting gets confused, - * so fix it. - */ - qp = qdisc_lookup(sch->dev, TC_H_MAJ(sch->parent)); - if (qp) - qp->q.qlen++; - - sch->q.qlen++; - sch->bstats.bytes += skb2->len; - sch->bstats.packets++; - } else - sch->qstats.drops++; + /* + * If we need to duplicate packet, then re-insert at top of the + * qdisc tree, since parent queuer expects that only one + * skb will be queued. + */ + if (count > 1 && (skb2 = skb_clone(skb, GFP_ATOMIC)) != NULL) { + struct Qdisc *rootq = sch->dev->qdisc; + u32 dupsave = q->duplicate; /* prevent duplicating a dup... */ + q->duplicate = 0; + + rootq->enqueue(skb2, rootq); + q->duplicate = dupsave; } - /* If doing simple delay then gap == 0 so all packets - * go into the delayed holding queue - * otherwise if doing out of order only "1 out of gap" - * packets will be delayed. - */ - if (q->counter < q->gap) { + if (q->gap == 0 /* not doing reordering */ + || q->counter < q->gap /* inside last reordering gap */ + || q->reorder < get_crandom(&q->reorder_cor)) { + psched_time_t now; + PSCHED_GET_TIME(now); + PSCHED_TADD2(now, tabledist(q->latency, q->jitter, + &q->delay_cor, q->delay_dist), + cb->time_to_send); ++q->counter; ret = q->qdisc->enqueue(skb, q->qdisc); } else { + /* + * Do re-ordering by putting one out of N packets at the front + * of the queue. + */ + PSCHED_GET_TIME(cb->time_to_send); q->counter = 0; - ret = netem_delay(sch, skb); - netem_run(sch); + ret = q->qdisc->ops->requeue(skb, q->qdisc); } if (likely(ret == NET_XMIT_SUCCESS)) { @@ -296,22 +242,33 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch) { struct netem_sched_data *q = qdisc_priv(sch); struct sk_buff *skb; - int pending; - - pending = netem_run(sch); skb = q->qdisc->dequeue(q->qdisc); if (skb) { - pr_debug("netem_dequeue: return skb=%p\n", skb); - sch->q.qlen--; - sch->flags &= ~TCQ_F_THROTTLED; - } - else if (pending) { - pr_debug("netem_dequeue: throttling\n"); + const struct netem_skb_cb *cb + = (const struct netem_skb_cb *)skb->cb; + psched_time_t now; + long delay; + + /* if more time remaining? */ + PSCHED_GET_TIME(now); + delay = PSCHED_US2JIFFIE(PSCHED_TDIFF(cb->time_to_send, now)); + pr_debug("netem_run: skb=%p delay=%ld\n", skb, delay); + if (delay <= 0) { + pr_debug("netem_dequeue: return skb=%p\n", skb); + sch->q.qlen--; + sch->flags &= ~TCQ_F_THROTTLED; + return skb; + } + + mod_timer(&q->timer, jiffies + delay); sch->flags |= TCQ_F_THROTTLED; - } - return skb; + if (q->qdisc->ops->requeue(skb, q->qdisc) != 0) + sch->qstats.drops++; + } + + return NULL; } static void netem_watchdog(unsigned long arg) @@ -328,8 +285,6 @@ static void netem_reset(struct Qdisc *sch) struct netem_sched_data *q = qdisc_priv(sch); qdisc_reset(q->qdisc); - skb_queue_purge(&q->delayed); - sch->q.qlen = 0; sch->flags &= ~TCQ_F_THROTTLED; del_timer_sync(&q->timer); @@ -397,6 +352,19 @@ static int get_correlation(struct Qdisc *sch, const struct rtattr *attr) return 0; } +static int get_reorder(struct Qdisc *sch, const struct rtattr *attr) +{ + struct netem_sched_data *q = qdisc_priv(sch); + const struct tc_netem_reorder *r = RTA_DATA(attr); + + if (RTA_PAYLOAD(attr) != sizeof(*r)) + return -EINVAL; + + q->reorder = r->probability; + init_crandom(&q->reorder_cor, r->correlation); + return 0; +} + static int netem_change(struct Qdisc *sch, struct rtattr *opt) { struct netem_sched_data *q = qdisc_priv(sch); @@ -417,9 +385,15 @@ static int netem_change(struct Qdisc *sch, struct rtattr *opt) q->jitter = qopt->jitter; q->limit = qopt->limit; q->gap = qopt->gap; + q->counter = 0; q->loss = qopt->loss; q->duplicate = qopt->duplicate; + /* for compatiablity with earlier versions. + * if gap is set, need to assume 100% probablity + */ + q->reorder = ~0; + /* Handle nested options after initial queue options. * Should have put all options in nested format but too late now. */ @@ -441,6 +415,11 @@ static int netem_change(struct Qdisc *sch, struct rtattr *opt) if (ret) return ret; } + if (tb[TCA_NETEM_REORDER-1]) { + ret = get_reorder(sch, tb[TCA_NETEM_REORDER-1]); + if (ret) + return ret; + } } @@ -455,11 +434,9 @@ static int netem_init(struct Qdisc *sch, struct rtattr *opt) if (!opt) return -EINVAL; - skb_queue_head_init(&q->delayed); init_timer(&q->timer); q->timer.function = netem_watchdog; q->timer.data = (unsigned long) sch; - q->counter = 0; q->qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops); if (!q->qdisc) { @@ -491,6 +468,7 @@ static int netem_dump(struct Qdisc *sch, struct sk_buff *skb) struct rtattr *rta = (struct rtattr *) b; struct tc_netem_qopt qopt; struct tc_netem_corr cor; + struct tc_netem_reorder reorder; qopt.latency = q->latency; qopt.jitter = q->jitter; @@ -504,6 +482,11 @@ static int netem_dump(struct Qdisc *sch, struct sk_buff *skb) cor.loss_corr = q->loss_cor.rho; cor.dup_corr = q->dup_cor.rho; RTA_PUT(skb, TCA_NETEM_CORR, sizeof(cor), &cor); + + reorder.probability = q->reorder; + reorder.correlation = q->reorder_cor.rho; + RTA_PUT(skb, TCA_NETEM_REORDER, sizeof(reorder), &reorder); + rta->rta_len = skb->tail - b; return skb->len; diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 55ed979..d07f5ce 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1136,7 +1136,7 @@ int xfrm_bundle_ok(struct xfrm_dst *first, struct flowi *fl, int family) struct xfrm_dst *last; u32 mtu; - if (!dst_check(dst->path, 0) || + if (!dst_check(dst->path, ((struct xfrm_dst *)dst)->path_cookie) || (dst->dev && !netif_running(dst->dev))) return 0; @@ -1156,7 +1156,7 @@ int xfrm_bundle_ok(struct xfrm_dst *first, struct flowi *fl, int family) xdst->child_mtu_cached = mtu; } - if (!dst_check(xdst->route, 0)) + if (!dst_check(xdst->route, xdst->route_cookie)) return 0; mtu = dst_mtu(xdst->route); if (xdst->route_mtu_cached != mtu) { |