diff options
Diffstat (limited to 'net/ipv4')
34 files changed, 124 insertions, 539 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index da33393..8514106 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -572,16 +572,6 @@ config TCP_CONG_VENO loss packets. See http://www.ntu.edu.sg/home5/ZHOU0022/papers/CPFu03a.pdf -config TCP_CONG_COMPOUND - tristate "TCP Compound" - depends on EXPERIMENTAL - default n - ---help--- - TCP Compound is a sender-side only change to TCP that uses - a mixed Reno/Vegas approach to calculate the cwnd. - For further details look here: - ftp://ftp.research.microsoft.com/pub/tr/TR-2005-86.pdf - endmenu config TCP_CONG_BIC diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile index 38b8039..4878fc5 100644 --- a/net/ipv4/Makefile +++ b/net/ipv4/Makefile @@ -47,7 +47,6 @@ obj-$(CONFIG_TCP_CONG_VEGAS) += tcp_vegas.o obj-$(CONFIG_TCP_CONG_VENO) += tcp_veno.o obj-$(CONFIG_TCP_CONG_SCALABLE) += tcp_scalable.o obj-$(CONFIG_TCP_CONG_LP) += tcp_lp.o -obj-$(CONFIG_TCP_CONG_COMPOUND) += tcp_compound.o obj-$(CONFIG_XFRM) += xfrm4_policy.o xfrm4_state.o xfrm4_input.o \ xfrm4_output.o diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 318d467..c84a320 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1097,6 +1097,40 @@ int inet_sk_rebuild_header(struct sock *sk) EXPORT_SYMBOL(inet_sk_rebuild_header); +static int inet_gso_send_check(struct sk_buff *skb) +{ + struct iphdr *iph; + struct net_protocol *ops; + int proto; + int ihl; + int err = -EINVAL; + + if (unlikely(!pskb_may_pull(skb, sizeof(*iph)))) + goto out; + + iph = skb->nh.iph; + ihl = iph->ihl * 4; + if (ihl < sizeof(*iph)) + goto out; + + if (unlikely(!pskb_may_pull(skb, ihl))) + goto out; + + skb->h.raw = __skb_pull(skb, ihl); + iph = skb->nh.iph; + proto = iph->protocol & (MAX_INET_PROTOS - 1); + err = -EPROTONOSUPPORT; + + rcu_read_lock(); + ops = rcu_dereference(inet_protos[proto]); + if (likely(ops && ops->gso_send_check)) + err = ops->gso_send_check(skb); + rcu_read_unlock(); + +out: + return err; +} + static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features) { struct sk_buff *segs = ERR_PTR(-EINVAL); @@ -1162,6 +1196,7 @@ static struct net_protocol igmp_protocol = { static struct net_protocol tcp_protocol = { .handler = tcp_v4_rcv, .err_handler = tcp_v4_err, + .gso_send_check = tcp_v4_gso_send_check, .gso_segment = tcp_tso_segment, .no_policy = 1, }; @@ -1208,6 +1243,7 @@ static int ipv4_proc_init(void); static struct packet_type ip_packet_type = { .type = __constant_htons(ETH_P_IP), .func = ip_rcv, + .gso_send_check = inet_gso_send_check, .gso_segment = inet_gso_segment, }; diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c index 8e748be..1366bc6 100644 --- a/net/ipv4/ah4.c +++ b/net/ipv4/ah4.c @@ -215,12 +215,10 @@ static int ah_init_state(struct xfrm_state *x) if (x->encap) goto error; - ahp = kmalloc(sizeof(*ahp), GFP_KERNEL); + ahp = kzalloc(sizeof(*ahp), GFP_KERNEL); if (ahp == NULL) return -ENOMEM; - memset(ahp, 0, sizeof(*ahp)); - ahp->key = x->aalg->alg_key; ahp->key_len = (x->aalg->alg_key_len+7)/8; ahp->tfm = crypto_alloc_tfm(x->aalg->alg_name, 0); diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index 7b51b3b..c8a3723 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -1372,12 +1372,11 @@ static int arp_seq_open(struct inode *inode, struct file *file) { struct seq_file *seq; int rc = -ENOMEM; - struct neigh_seq_state *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct neigh_seq_state *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; - memset(s, 0, sizeof(*s)); rc = seq_open(file, &arp_seq_ops); if (rc) goto out_kfree; diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index a7c65e9..a6cc31d 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -93,10 +93,9 @@ static void devinet_sysctl_unregister(struct ipv4_devconf *p); static struct in_ifaddr *inet_alloc_ifa(void) { - struct in_ifaddr *ifa = kmalloc(sizeof(*ifa), GFP_KERNEL); + struct in_ifaddr *ifa = kzalloc(sizeof(*ifa), GFP_KERNEL); if (ifa) { - memset(ifa, 0, sizeof(*ifa)); INIT_RCU_HEAD(&ifa->rcu_head); } @@ -140,10 +139,9 @@ struct in_device *inetdev_init(struct net_device *dev) ASSERT_RTNL(); - in_dev = kmalloc(sizeof(*in_dev), GFP_KERNEL); + in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL); if (!in_dev) goto out; - memset(in_dev, 0, sizeof(*in_dev)); INIT_RCU_HEAD(&in_dev->rcu_head); memcpy(&in_dev->cnf, &ipv4_devconf_dflt, sizeof(in_dev->cnf)); in_dev->cnf.sysctl = NULL; diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 4e11273..fc2f8ce 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -316,12 +316,10 @@ static int esp_init_state(struct xfrm_state *x) if (x->ealg == NULL) goto error; - esp = kmalloc(sizeof(*esp), GFP_KERNEL); + esp = kzalloc(sizeof(*esp), GFP_KERNEL); if (esp == NULL) return -ENOMEM; - memset(esp, 0, sizeof(*esp)); - if (x->aalg) { struct xfrm_algo_desc *aalg_desc; diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c index 3c1d32a..72c633b 100644 --- a/net/ipv4/fib_hash.c +++ b/net/ipv4/fib_hash.c @@ -204,11 +204,10 @@ static struct fn_zone * fn_new_zone(struct fn_hash *table, int z) { int i; - struct fn_zone *fz = kmalloc(sizeof(struct fn_zone), GFP_KERNEL); + struct fn_zone *fz = kzalloc(sizeof(struct fn_zone), GFP_KERNEL); if (!fz) return NULL; - memset(fz, 0, sizeof(struct fn_zone)); if (z) { fz->fz_divisor = 16; } else { @@ -1046,7 +1045,7 @@ static int fib_seq_open(struct inode *inode, struct file *file) { struct seq_file *seq; int rc = -ENOMEM; - struct fib_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct fib_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; @@ -1057,7 +1056,6 @@ static int fib_seq_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = s; - memset(s, 0, sizeof(*s)); out: return rc; out_kfree: diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index 6c642d1..79b0471 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -196,10 +196,9 @@ int inet_rtm_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) } } - new_r = kmalloc(sizeof(*new_r), GFP_KERNEL); + new_r = kzalloc(sizeof(*new_r), GFP_KERNEL); if (!new_r) return -ENOMEM; - memset(new_r, 0, sizeof(*new_r)); if (rta[RTA_SRC-1]) memcpy(&new_r->r_src, RTA_DATA(rta[RTA_SRC-1]), 4); @@ -457,13 +456,13 @@ int inet_dump_rules(struct sk_buff *skb, struct netlink_callback *cb) rcu_read_lock(); hlist_for_each_entry(r, node, &fib_rules, hlist) { - if (idx < s_idx) - continue; + goto next; if (inet_fill_rule(skb, r, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, RTM_NEWRULE, NLM_F_MULTI) < 0) break; +next: idx++; } rcu_read_unlock(); diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 5f87533..9be53a8 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -709,11 +709,10 @@ fib_create_info(const struct rtmsg *r, struct kern_rta *rta, goto failure; } - fi = kmalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL); + fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL); if (fi == NULL) goto failure; fib_info_cnt++; - memset(fi, 0, sizeof(*fi)+nhs*sizeof(struct fib_nh)); fi->fib_protocol = r->rtm_protocol; @@ -962,10 +961,6 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, rtm->rtm_protocol = fi->fib_protocol; if (fi->fib_priority) RTA_PUT(skb, RTA_PRIORITY, 4, &fi->fib_priority); -#ifdef CONFIG_NET_CLS_ROUTE - if (fi->fib_nh[0].nh_tclassid) - RTA_PUT(skb, RTA_FLOW, 4, &fi->fib_nh[0].nh_tclassid); -#endif if (rtnetlink_put_metrics(skb, fi->fib_metrics) < 0) goto rtattr_failure; if (fi->fib_prefsrc) @@ -975,6 +970,10 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, RTA_PUT(skb, RTA_GATEWAY, 4, &fi->fib_nh->nh_gw); if (fi->fib_nh->nh_oif) RTA_PUT(skb, RTA_OIF, sizeof(int), &fi->fib_nh->nh_oif); +#ifdef CONFIG_NET_CLS_ROUTE + if (fi->fib_nh[0].nh_tclassid) + RTA_PUT(skb, RTA_FLOW, 4, &fi->fib_nh[0].nh_tclassid); +#endif } #ifdef CONFIG_IP_ROUTE_MULTIPATH if (fi->fib_nhs > 1) { @@ -993,6 +992,10 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, nhp->rtnh_ifindex = nh->nh_oif; if (nh->nh_gw) RTA_PUT(skb, RTA_GATEWAY, 4, &nh->nh_gw); +#ifdef CONFIG_NET_CLS_ROUTE + if (nh->nh_tclassid) + RTA_PUT(skb, RTA_FLOW, 4, &nh->nh_tclassid); +#endif nhp->rtnh_len = skb->tail - (unsigned char*)nhp; } endfor_nexthops(fi); mp_head->rta_type = RTA_MULTIPATH; diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 1cb6530..23fb9d9 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1252,8 +1252,8 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta, */ if (!fa_head) { - fa_head = fib_insert_node(t, &err, key, plen); err = 0; + fa_head = fib_insert_node(t, &err, key, plen); if (err) goto out_free_new_fa; } diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index d299c8e..9f4b752 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1028,10 +1028,9 @@ static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im) * for deleted items allows change reports to use common code with * non-deleted or query-response MCA's. */ - pmc = kmalloc(sizeof(*pmc), GFP_KERNEL); + pmc = kzalloc(sizeof(*pmc), GFP_KERNEL); if (!pmc) return; - memset(pmc, 0, sizeof(*pmc)); spin_lock_bh(&im->lock); pmc->interface = im->interface; in_dev_hold(in_dev); @@ -1529,10 +1528,9 @@ static int ip_mc_add1_src(struct ip_mc_list *pmc, int sfmode, psf_prev = psf; } if (!psf) { - psf = kmalloc(sizeof(*psf), GFP_ATOMIC); + psf = kzalloc(sizeof(*psf), GFP_ATOMIC); if (!psf) return -ENOBUFS; - memset(psf, 0, sizeof(*psf)); psf->sf_inaddr = *psfsrc; if (psf_prev) { psf_prev->sf_next = psf; @@ -2380,7 +2378,7 @@ static int igmp_mc_seq_open(struct inode *inode, struct file *file) { struct seq_file *seq; int rc = -ENOMEM; - struct igmp_mc_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct igmp_mc_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; @@ -2390,7 +2388,6 @@ static int igmp_mc_seq_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = s; - memset(s, 0, sizeof(*s)); out: return rc; out_kfree: @@ -2555,7 +2552,7 @@ static int igmp_mcf_seq_open(struct inode *inode, struct file *file) { struct seq_file *seq; int rc = -ENOMEM; - struct igmp_mcf_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct igmp_mcf_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; @@ -2565,7 +2562,6 @@ static int igmp_mcf_seq_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = s; - memset(s, 0, sizeof(*s)); out: return rc; out_kfree: diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 8e7e41b..492858e 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -909,11 +909,10 @@ static int __init inet_diag_init(void) sizeof(struct inet_diag_handler *)); int err = -ENOMEM; - inet_diag_table = kmalloc(inet_diag_table_size, GFP_KERNEL); + inet_diag_table = kzalloc(inet_diag_table_size, GFP_KERNEL); if (!inet_diag_table) goto out; - memset(inet_diag_table, 0, inet_diag_table_size); idiagnl = netlink_kernel_create(NETLINK_INET_DIAG, 0, inet_diag_rcv, THIS_MODULE); if (idiagnl == NULL) diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 2160874..03ff62e 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -86,7 +86,7 @@ static struct inet_peer *peer_root = peer_avl_empty; static DEFINE_RWLOCK(peer_pool_lock); #define PEER_MAXDEPTH 40 /* sufficient for about 2^27 nodes */ -static volatile int peer_total; +static int peer_total; /* Exported for sysctl_net_ipv4. */ int inet_peer_threshold = 65536 + 128; /* start to throw entries more * aggressively at this stage */ diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 6ff9b10..0f9b3a3 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -617,7 +617,6 @@ static int ipgre_rcv(struct sk_buff *skb) skb->mac.raw = skb->nh.raw; skb->nh.raw = __pskb_pull(skb, offset); skb_postpull_rcsum(skb, skb->h.raw, offset); - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); skb->pkt_type = PACKET_HOST; #ifdef CONFIG_NET_IPGRE_BROADCAST if (MULTICAST(iph->daddr)) { diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index e1a7dba..212734c 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -428,6 +428,9 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, goto drop; } + /* Remove any debris in the socket control block */ + memset(IPCB(skb), 0, sizeof(struct inet_skb_parm)); + return NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, dev, NULL, ip_rcv_finish); diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c index cbcae65..406056e 100644 --- a/net/ipv4/ip_options.c +++ b/net/ipv4/ip_options.c @@ -256,7 +256,6 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb) if (!opt) { opt = &(IPCB(skb)->opt); - memset(opt, 0, sizeof(struct ip_options)); iph = skb->nh.raw; opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr); optptr = iph + sizeof(struct iphdr); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index ca0e714..7c9f9a6 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -209,7 +209,7 @@ static inline int ip_finish_output(struct sk_buff *skb) return dst_output(skb); } #endif - if (skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->gso_size) + if (skb->len > dst_mtu(skb->dst) && !skb_is_gso(skb)) return ip_fragment(skb, ip_finish_output2); else return ip_finish_output2(skb); @@ -1095,7 +1095,7 @@ ssize_t ip_append_page(struct sock *sk, struct page *page, while (size > 0) { int i; - if (skb_shinfo(skb)->gso_size) + if (skb_is_gso(skb)) len = size; else { diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c index 8e03748..a0c28b2 100644 --- a/net/ipv4/ipcomp.c +++ b/net/ipv4/ipcomp.c @@ -70,7 +70,8 @@ static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb) if (err) goto out; - skb_put(skb, dlen - plen); + skb->truesize += dlen - plen; + __skb_put(skb, dlen - plen); memcpy(skb->data, scratch, dlen); out: put_cpu(); @@ -409,11 +410,10 @@ static int ipcomp_init_state(struct xfrm_state *x) goto out; err = -ENOMEM; - ipcd = kmalloc(sizeof(*ipcd), GFP_KERNEL); + ipcd = kzalloc(sizeof(*ipcd), GFP_KERNEL); if (!ipcd) goto out; - memset(ipcd, 0, sizeof(*ipcd)); x->props.header_len = 0; if (x->props.mode) x->props.header_len += sizeof(struct iphdr); diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index 3291d51..76ab50b 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -487,7 +487,6 @@ static int ipip_rcv(struct sk_buff *skb) skb->mac.raw = skb->nh.raw; skb->nh.raw = skb->data; - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); skb->protocol = htons(ETH_P_IP); skb->pkt_type = PACKET_HOST; diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index ba33f86..85893ee 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1461,7 +1461,6 @@ int pim_rcv_v1(struct sk_buff * skb) skb_pull(skb, (u8*)encap - skb->data); skb->nh.iph = (struct iphdr *)skb->data; skb->dev = reg_dev; - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); skb->protocol = htons(ETH_P_IP); skb->ip_summed = 0; skb->pkt_type = PACKET_HOST; @@ -1517,7 +1516,6 @@ static int pim_rcv(struct sk_buff * skb) skb_pull(skb, (u8*)encap - skb->data); skb->nh.iph = (struct iphdr *)skb->data; skb->dev = reg_dev; - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); skb->protocol = htons(ETH_P_IP); skb->ip_summed = 0; skb->pkt_type = PACKET_HOST; @@ -1580,6 +1578,7 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait) cache = ipmr_cache_find(rt->rt_src, rt->rt_dst); if (cache==NULL) { + struct sk_buff *skb2; struct net_device *dev; int vif; @@ -1593,12 +1592,18 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait) read_unlock(&mrt_lock); return -ENODEV; } - skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); - skb->nh.iph->ihl = sizeof(struct iphdr)>>2; - skb->nh.iph->saddr = rt->rt_src; - skb->nh.iph->daddr = rt->rt_dst; - skb->nh.iph->version = 0; - err = ipmr_cache_unresolved(vif, skb); + skb2 = skb_clone(skb, GFP_ATOMIC); + if (!skb2) { + read_unlock(&mrt_lock); + return -ENOMEM; + } + + skb2->nh.raw = skb_push(skb2, sizeof(struct iphdr)); + skb2->nh.iph->ihl = sizeof(struct iphdr)>>2; + skb2->nh.iph->saddr = rt->rt_src; + skb2->nh.iph->daddr = rt->rt_dst; + skb2->nh.iph->version = 0; + err = ipmr_cache_unresolved(vif, skb2); read_unlock(&mrt_lock); return err; } diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c index f28ec68..6a28faf 100644 --- a/net/ipv4/ipvs/ip_vs_ctl.c +++ b/net/ipv4/ipvs/ip_vs_ctl.c @@ -735,12 +735,11 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user *udest, if (atype != RTN_LOCAL && atype != RTN_UNICAST) return -EINVAL; - dest = kmalloc(sizeof(struct ip_vs_dest), GFP_ATOMIC); + dest = kzalloc(sizeof(struct ip_vs_dest), GFP_ATOMIC); if (dest == NULL) { IP_VS_ERR("ip_vs_new_dest: kmalloc failed.\n"); return -ENOMEM; } - memset(dest, 0, sizeof(struct ip_vs_dest)); dest->protocol = svc->protocol; dest->vaddr = svc->addr; @@ -1050,14 +1049,12 @@ ip_vs_add_service(struct ip_vs_service_user *u, struct ip_vs_service **svc_p) goto out_mod_dec; } - svc = (struct ip_vs_service *) - kmalloc(sizeof(struct ip_vs_service), GFP_ATOMIC); + svc = kzalloc(sizeof(struct ip_vs_service), GFP_ATOMIC); if (svc == NULL) { IP_VS_DBG(1, "ip_vs_add_service: kmalloc failed.\n"); ret = -ENOMEM; goto out_err; } - memset(svc, 0, sizeof(struct ip_vs_service)); /* I'm the first user of the service */ atomic_set(&svc->usecnt, 1); @@ -1797,7 +1794,7 @@ static int ip_vs_info_open(struct inode *inode, struct file *file) { struct seq_file *seq; int rc = -ENOMEM; - struct ip_vs_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct ip_vs_iter *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; @@ -1808,7 +1805,6 @@ static int ip_vs_info_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = s; - memset(s, 0, sizeof(*s)); out: return rc; out_kfree: diff --git a/net/ipv4/ipvs/ip_vs_est.c b/net/ipv4/ipvs/ip_vs_est.c index 4c19403..7d68b80 100644 --- a/net/ipv4/ipvs/ip_vs_est.c +++ b/net/ipv4/ipvs/ip_vs_est.c @@ -123,11 +123,10 @@ int ip_vs_new_estimator(struct ip_vs_stats *stats) { struct ip_vs_estimator *est; - est = kmalloc(sizeof(*est), GFP_KERNEL); + est = kzalloc(sizeof(*est), GFP_KERNEL); if (est == NULL) return -ENOMEM; - memset(est, 0, sizeof(*est)); est->stats = stats; est->last_conns = stats->conns; est->cps = stats->cps<<10; diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323.c b/net/ipv4/netfilter/ip_conntrack_helper_h323.c index af35235..9a39e29 100644 --- a/net/ipv4/netfilter/ip_conntrack_helper_h323.c +++ b/net/ipv4/netfilter/ip_conntrack_helper_h323.c @@ -1200,7 +1200,7 @@ static struct ip_conntrack_expect *find_expect(struct ip_conntrack *ct, tuple.dst.protonum = IPPROTO_TCP; exp = __ip_conntrack_expect_find(&tuple); - if (exp->master == ct) + if (exp && exp->master == ct) return exp; return NULL; } diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c index 7bd3c22..7a9fa04 100644 --- a/net/ipv4/netfilter/ip_conntrack_standalone.c +++ b/net/ipv4/netfilter/ip_conntrack_standalone.c @@ -534,6 +534,8 @@ static struct nf_hook_ops ip_conntrack_ops[] = { /* Sysctl support */ +int ip_conntrack_checksum = 1; + #ifdef CONFIG_SYSCTL /* From ip_conntrack_core.c */ @@ -568,8 +570,6 @@ extern unsigned int ip_ct_generic_timeout; static int log_invalid_proto_min = 0; static int log_invalid_proto_max = 255; -int ip_conntrack_checksum = 1; - static struct ctl_table_header *ip_ct_sysctl_header; static ctl_table ip_ct_sysctl_table[] = { diff --git a/net/ipv4/netfilter/ip_nat_snmp_basic.c b/net/ipv4/netfilter/ip_nat_snmp_basic.c index 0b1b416..18b7fbd 100644 --- a/net/ipv4/netfilter/ip_nat_snmp_basic.c +++ b/net/ipv4/netfilter/ip_nat_snmp_basic.c @@ -1255,9 +1255,9 @@ static int help(struct sk_buff **pskb, struct udphdr *udph = (struct udphdr *)((u_int32_t *)iph + iph->ihl); /* SNMP replies and originating SNMP traps get mangled */ - if (udph->source == ntohs(SNMP_PORT) && dir != IP_CT_DIR_REPLY) + if (udph->source == htons(SNMP_PORT) && dir != IP_CT_DIR_REPLY) return NF_ACCEPT; - if (udph->dest == ntohs(SNMP_TRAP_PORT) && dir != IP_CT_DIR_ORIGINAL) + if (udph->dest == htons(SNMP_TRAP_PORT) && dir != IP_CT_DIR_ORIGINAL) return NF_ACCEPT; /* No NAT? */ diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index cbffeae..d994c5f 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -172,11 +172,10 @@ clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip, struct clusterip_config *c; char buffer[16]; - c = kmalloc(sizeof(*c), GFP_ATOMIC); + c = kzalloc(sizeof(*c), GFP_ATOMIC); if (!c) return NULL; - memset(c, 0, sizeof(*c)); c->dev = dev; c->clusterip = ip; memcpy(&c->clustermac, &i->clustermac, ETH_ALEN); diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index bd221ec..62b2762 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -609,6 +609,7 @@ static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, if (sin) { sin->sin_family = AF_INET; sin->sin_addr.s_addr = skb->nh.iph->saddr; + sin->sin_port = 0; memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); } if (inet->cmsg_flags) diff --git a/net/ipv4/tcp_compound.c b/net/ipv4/tcp_compound.c deleted file mode 100644 index bc54f7e..0000000 --- a/net/ipv4/tcp_compound.c +++ /dev/null @@ -1,448 +0,0 @@ -/* - * TCP Vegas congestion control - * - * This is based on the congestion detection/avoidance scheme described in - * Lawrence S. Brakmo and Larry L. Peterson. - * "TCP Vegas: End to end congestion avoidance on a global internet." - * IEEE Journal on Selected Areas in Communication, 13(8):1465--1480, - * October 1995. Available from: - * ftp://ftp.cs.arizona.edu/xkernel/Papers/jsac.ps - * - * See http://www.cs.arizona.edu/xkernel/ for their implementation. - * The main aspects that distinguish this implementation from the - * Arizona Vegas implementation are: - * o We do not change the loss detection or recovery mechanisms of - * Linux in any way. Linux already recovers from losses quite well, - * using fine-grained timers, NewReno, and FACK. - * o To avoid the performance penalty imposed by increasing cwnd - * only every-other RTT during slow start, we increase during - * every RTT during slow start, just like Reno. - * o Largely to allow continuous cwnd growth during slow start, - * we use the rate at which ACKs come back as the "actual" - * rate, rather than the rate at which data is sent. - * o To speed convergence to the right rate, we set the cwnd - * to achieve the right ("actual") rate when we exit slow start. - * o To filter out the noise caused by delayed ACKs, we use the - * minimum RTT sample observed during the last RTT to calculate - * the actual rate. - * o When the sender re-starts from idle, it waits until it has - * received ACKs for an entire flight of new data before making - * a cwnd adjustment decision. The original Vegas implementation - * assumed senders never went idle. - * - * - * TCP Compound based on TCP Vegas - * - * further details can be found here: - * ftp://ftp.research.microsoft.com/pub/tr/TR-2005-86.pdf - */ - -#include <linux/config.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/skbuff.h> -#include <linux/inet_diag.h> - -#include <net/tcp.h> - -/* Default values of the Vegas variables, in fixed-point representation - * with V_PARAM_SHIFT bits to the right of the binary point. - */ -#define V_PARAM_SHIFT 1 - -#define TCP_COMPOUND_ALPHA 3U -#define TCP_COMPOUND_BETA 1U -#define TCP_COMPOUND_GAMMA 30 -#define TCP_COMPOUND_ZETA 1 - -/* TCP compound variables */ -struct compound { - u32 beg_snd_nxt; /* right edge during last RTT */ - u32 beg_snd_una; /* left edge during last RTT */ - u32 beg_snd_cwnd; /* saves the size of the cwnd */ - u8 doing_vegas_now; /* if true, do vegas for this RTT */ - u16 cntRTT; /* # of RTTs measured within last RTT */ - u32 minRTT; /* min of RTTs measured within last RTT (in usec) */ - u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */ - - u32 cwnd; - u32 dwnd; -}; - -/* There are several situations when we must "re-start" Vegas: - * - * o when a connection is established - * o after an RTO - * o after fast recovery - * o when we send a packet and there is no outstanding - * unacknowledged data (restarting an idle connection) - * - * In these circumstances we cannot do a Vegas calculation at the - * end of the first RTT, because any calculation we do is using - * stale info -- both the saved cwnd and congestion feedback are - * stale. - * - * Instead we must wait until the completion of an RTT during - * which we actually receive ACKs. - */ -static inline void vegas_enable(struct sock *sk) -{ - const struct tcp_sock *tp = tcp_sk(sk); - struct compound *vegas = inet_csk_ca(sk); - - /* Begin taking Vegas samples next time we send something. */ - vegas->doing_vegas_now = 1; - - /* Set the beginning of the next send window. */ - vegas->beg_snd_nxt = tp->snd_nxt; - - vegas->cntRTT = 0; - vegas->minRTT = 0x7fffffff; -} - -/* Stop taking Vegas samples for now. */ -static inline void vegas_disable(struct sock *sk) -{ - struct compound *vegas = inet_csk_ca(sk); - - vegas->doing_vegas_now = 0; -} - -static void tcp_compound_init(struct sock *sk) -{ - struct compound *vegas = inet_csk_ca(sk); - const struct tcp_sock *tp = tcp_sk(sk); - - vegas->baseRTT = 0x7fffffff; - vegas_enable(sk); - - vegas->dwnd = 0; - vegas->cwnd = tp->snd_cwnd; -} - -/* Do RTT sampling needed for Vegas. - * Basically we: - * o min-filter RTT samples from within an RTT to get the current - * propagation delay + queuing delay (we are min-filtering to try to - * avoid the effects of delayed ACKs) - * o min-filter RTT samples from a much longer window (forever for now) - * to find the propagation delay (baseRTT) - */ -static void tcp_compound_rtt_calc(struct sock *sk, u32 usrtt) -{ - struct compound *vegas = inet_csk_ca(sk); - u32 vrtt = usrtt + 1; /* Never allow zero rtt or baseRTT */ - - /* Filter to find propagation delay: */ - if (vrtt < vegas->baseRTT) - vegas->baseRTT = vrtt; - - /* Find the min RTT during the last RTT to find - * the current prop. delay + queuing delay: - */ - - vegas->minRTT = min(vegas->minRTT, vrtt); - vegas->cntRTT++; -} - -static void tcp_compound_state(struct sock *sk, u8 ca_state) -{ - - if (ca_state == TCP_CA_Open) - vegas_enable(sk); - else - vegas_disable(sk); -} - - -/* 64bit divisor, dividend and result. dynamic precision */ -static inline u64 div64_64(u64 dividend, u64 divisor) -{ - u32 d = divisor; - - if (divisor > 0xffffffffULL) { - unsigned int shift = fls(divisor >> 32); - - d = divisor >> shift; - dividend >>= shift; - } - - /* avoid 64 bit division if possible */ - if (dividend >> 32) - do_div(dividend, d); - else - dividend = (u32) dividend / d; - - return dividend; -} - -/* calculate the quartic root of "a" using Newton-Raphson */ -static u32 qroot(u64 a) -{ - u32 x, x1; - - /* Initial estimate is based on: - * qrt(x) = exp(log(x) / 4) - */ - x = 1u << (fls64(a) >> 2); - - /* - * Iteration based on: - * 3 - * x = ( 3 * x + a / x ) / 4 - * k+1 k k - */ - do { - u64 x3 = x; - - x1 = x; - x3 *= x; - x3 *= x; - - x = (3 * x + (u32) div64_64(a, x3)) / 4; - } while (abs(x1 - x) > 1); - - return x; -} - - -/* - * If the connection is idle and we are restarting, - * then we don't want to do any Vegas calculations - * until we get fresh RTT samples. So when we - * restart, we reset our Vegas state to a clean - * slate. After we get acks for this flight of - * packets, _then_ we can make Vegas calculations - * again. - */ -static void tcp_compound_cwnd_event(struct sock *sk, enum tcp_ca_event event) -{ - if (event == CA_EVENT_CWND_RESTART || event == CA_EVENT_TX_START) - tcp_compound_init(sk); -} - -static void tcp_compound_cong_avoid(struct sock *sk, u32 ack, - u32 seq_rtt, u32 in_flight, int flag) -{ - struct tcp_sock *tp = tcp_sk(sk); - struct compound *vegas = inet_csk_ca(sk); - u8 inc = 0; - - if (vegas->cwnd + vegas->dwnd > tp->snd_cwnd) { - if (vegas->cwnd > tp->snd_cwnd || vegas->dwnd > tp->snd_cwnd) { - vegas->cwnd = tp->snd_cwnd; - vegas->dwnd = 0; - } else - vegas->cwnd = tp->snd_cwnd - vegas->dwnd; - - } - - if (!tcp_is_cwnd_limited(sk, in_flight)) - return; - - if (vegas->cwnd <= tp->snd_ssthresh) - inc = 1; - else if (tp->snd_cwnd_cnt < tp->snd_cwnd) - tp->snd_cwnd_cnt++; - - if (tp->snd_cwnd_cnt >= tp->snd_cwnd) { - inc = 1; - tp->snd_cwnd_cnt = 0; - } - - if (inc && tp->snd_cwnd < tp->snd_cwnd_clamp) - vegas->cwnd++; - - /* The key players are v_beg_snd_una and v_beg_snd_nxt. - * - * These are so named because they represent the approximate values - * of snd_una and snd_nxt at the beginning of the current RTT. More - * precisely, they represent the amount of data sent during the RTT. - * At the end of the RTT, when we receive an ACK for v_beg_snd_nxt, - * we will calculate that (v_beg_snd_nxt - v_beg_snd_una) outstanding - * bytes of data have been ACKed during the course of the RTT, giving - * an "actual" rate of: - * - * (v_beg_snd_nxt - v_beg_snd_una) / (rtt duration) - * - * Unfortunately, v_beg_snd_una is not exactly equal to snd_una, - * because delayed ACKs can cover more than one segment, so they - * don't line up nicely with the boundaries of RTTs. - * - * Another unfortunate fact of life is that delayed ACKs delay the - * advance of the left edge of our send window, so that the number - * of bytes we send in an RTT is often less than our cwnd will allow. - * So we keep track of our cwnd separately, in v_beg_snd_cwnd. - */ - - if (after(ack, vegas->beg_snd_nxt)) { - /* Do the Vegas once-per-RTT cwnd adjustment. */ - u32 old_wnd, old_snd_cwnd; - - /* Here old_wnd is essentially the window of data that was - * sent during the previous RTT, and has all - * been acknowledged in the course of the RTT that ended - * with the ACK we just received. Likewise, old_snd_cwnd - * is the cwnd during the previous RTT. - */ - if (!tp->mss_cache) - return; - - old_wnd = (vegas->beg_snd_nxt - vegas->beg_snd_una) / - tp->mss_cache; - old_snd_cwnd = vegas->beg_snd_cwnd; - - /* Save the extent of the current window so we can use this - * at the end of the next RTT. - */ - vegas->beg_snd_una = vegas->beg_snd_nxt; - vegas->beg_snd_nxt = tp->snd_nxt; - vegas->beg_snd_cwnd = tp->snd_cwnd; - - /* We do the Vegas calculations only if we got enough RTT - * samples that we can be reasonably sure that we got - * at least one RTT sample that wasn't from a delayed ACK. - * If we only had 2 samples total, - * then that means we're getting only 1 ACK per RTT, which - * means they're almost certainly delayed ACKs. - * If we have 3 samples, we should be OK. - */ - - if (vegas->cntRTT > 2) { - u32 rtt, target_cwnd, diff; - u32 brtt, dwnd; - - /* We have enough RTT samples, so, using the Vegas - * algorithm, we determine if we should increase or - * decrease cwnd, and by how much. - */ - - /* Pluck out the RTT we are using for the Vegas - * calculations. This is the min RTT seen during the - * last RTT. Taking the min filters out the effects - * of delayed ACKs, at the cost of noticing congestion - * a bit later. - */ - rtt = vegas->minRTT; - - /* Calculate the cwnd we should have, if we weren't - * going too fast. - * - * This is: - * (actual rate in segments) * baseRTT - * We keep it as a fixed point number with - * V_PARAM_SHIFT bits to the right of the binary point. - */ - if (!rtt) - return; - - brtt = vegas->baseRTT; - target_cwnd = ((old_wnd * brtt) - << V_PARAM_SHIFT) / rtt; - - /* Calculate the difference between the window we had, - * and the window we would like to have. This quantity - * is the "Diff" from the Arizona Vegas papers. - * - * Again, this is a fixed point number with - * V_PARAM_SHIFT bits to the right of the binary - * point. - */ - - diff = (old_wnd << V_PARAM_SHIFT) - target_cwnd; - - dwnd = vegas->dwnd; - - if (diff < (TCP_COMPOUND_GAMMA << V_PARAM_SHIFT)) { - u64 v; - u32 x; - - /* - * The TCP Compound paper describes the choice - * of "k" determines the agressiveness, - * ie. slope of the response function. - * - * For same value as HSTCP would be 0.8 - * but for computaional reasons, both the - * original authors and this implementation - * use 0.75. - */ - v = old_wnd; - x = qroot(v * v * v) >> TCP_COMPOUND_ALPHA; - if (x > 1) - dwnd = x - 1; - else - dwnd = 0; - - dwnd += vegas->dwnd; - - } else if ((dwnd << V_PARAM_SHIFT) < - (diff * TCP_COMPOUND_BETA)) - dwnd = 0; - else - dwnd = - ((dwnd << V_PARAM_SHIFT) - - (diff * - TCP_COMPOUND_BETA)) >> V_PARAM_SHIFT; - - vegas->dwnd = dwnd; - - } - - /* Wipe the slate clean for the next RTT. */ - vegas->cntRTT = 0; - vegas->minRTT = 0x7fffffff; - } - - tp->snd_cwnd = vegas->cwnd + vegas->dwnd; -} - -/* Extract info for Tcp socket info provided via netlink. */ -static void tcp_compound_get_info(struct sock *sk, u32 ext, struct sk_buff *skb) -{ - const struct compound *ca = inet_csk_ca(sk); - if (ext & (1 << (INET_DIAG_VEGASINFO - 1))) { - struct tcpvegas_info *info; - - info = RTA_DATA(__RTA_PUT(skb, INET_DIAG_VEGASINFO, - sizeof(*info))); - - info->tcpv_enabled = ca->doing_vegas_now; - info->tcpv_rttcnt = ca->cntRTT; - info->tcpv_rtt = ca->baseRTT; - info->tcpv_minrtt = ca->minRTT; - rtattr_failure:; - } -} - -static struct tcp_congestion_ops tcp_compound = { - .init = tcp_compound_init, - .ssthresh = tcp_reno_ssthresh, - .cong_avoid = tcp_compound_cong_avoid, - .rtt_sample = tcp_compound_rtt_calc, - .set_state = tcp_compound_state, - .cwnd_event = tcp_compound_cwnd_event, - .get_info = tcp_compound_get_info, - - .owner = THIS_MODULE, - .name = "compound", -}; - -static int __init tcp_compound_register(void) -{ - BUG_ON(sizeof(struct compound) > ICSK_CA_PRIV_SIZE); - tcp_register_congestion_control(&tcp_compound); - return 0; -} - -static void __exit tcp_compound_unregister(void) -{ - tcp_unregister_congestion_control(&tcp_compound); -} - -module_init(tcp_compound_register); -module_exit(tcp_compound_unregister); - -MODULE_AUTHOR("Angelo P. Castellani, Stephen Hemminger"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("TCP Compound"); diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c index aaa1538..fa3e1aa 100644 --- a/net/ipv4/tcp_highspeed.c +++ b/net/ipv4/tcp_highspeed.c @@ -139,14 +139,19 @@ static void hstcp_cong_avoid(struct sock *sk, u32 adk, u32 rtt, tp->snd_cwnd++; } } else { - /* Update AIMD parameters */ + /* Update AIMD parameters. + * + * We want to guarantee that: + * hstcp_aimd_vals[ca->ai-1].cwnd < + * snd_cwnd <= + * hstcp_aimd_vals[ca->ai].cwnd + */ if (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd) { while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd && ca->ai < HSTCP_AIMD_MAX - 1) ca->ai++; - } else if (tp->snd_cwnd < hstcp_aimd_vals[ca->ai].cwnd) { - while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd && - ca->ai > 0) + } else if (ca->ai && tp->snd_cwnd <= hstcp_aimd_vals[ca->ai-1].cwnd) { + while (ca->ai && tp->snd_cwnd <= hstcp_aimd_vals[ca->ai-1].cwnd) ca->ai--; } diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 5a886e6..f6f39e8 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -496,6 +496,24 @@ void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb) } } +int tcp_v4_gso_send_check(struct sk_buff *skb) +{ + struct iphdr *iph; + struct tcphdr *th; + + if (!pskb_may_pull(skb, sizeof(*th))) + return -EINVAL; + + iph = skb->nh.iph; + th = skb->h.th; + + th->check = 0; + th->check = ~tcp_v4_check(th, skb->len, iph->saddr, iph->daddr, 0); + skb->csum = offsetof(struct tcphdr, check); + skb->ip_summed = CHECKSUM_HW; + return 0; +} + /* * This routine will send an RST to the other tcp. * @@ -1622,10 +1640,9 @@ static int tcp_seq_open(struct inode *inode, struct file *file) if (unlikely(afinfo == NULL)) return -EINVAL; - s = kmalloc(sizeof(*s), GFP_KERNEL); + s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) return -ENOMEM; - memset(s, 0, sizeof(*s)); s->family = afinfo->family; s->seq_ops.start = tcp_seq_start; s->seq_ops.next = tcp_seq_next; diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 9bfcdda..f136cec 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1468,11 +1468,10 @@ static int udp_seq_open(struct inode *inode, struct file *file) struct udp_seq_afinfo *afinfo = PDE(inode)->data; struct seq_file *seq; int rc = -ENOMEM; - struct udp_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL); + struct udp_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) goto out; - memset(s, 0, sizeof(*s)); s->family = afinfo->family; s->seq_ops.start = udp_seq_start; s->seq_ops.next = udp_seq_next; diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c index f8d880b..13cafbe 100644 --- a/net/ipv4/xfrm4_mode_tunnel.c +++ b/net/ipv4/xfrm4_mode_tunnel.c @@ -92,7 +92,6 @@ static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb) skb->mac.raw = memmove(skb->data - skb->mac_len, skb->mac.raw, skb->mac_len); skb->nh.raw = skb->data; - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); err = 0; out: diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c index 193363e..d16f863 100644 --- a/net/ipv4/xfrm4_output.c +++ b/net/ipv4/xfrm4_output.c @@ -134,7 +134,7 @@ static int xfrm4_output_finish(struct sk_buff *skb) } #endif - if (!skb_shinfo(skb)->gso_size) + if (!skb_is_gso(skb)) return xfrm4_output_finish2(skb); skb->protocol = htons(ETH_P_IP); |