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-rw-r--r--net/ipv4/devinet.c188
-rw-r--r--net/ipv4/fib_semantics.c2
-rw-r--r--net/ipv4/inet_connection_sock.c25
-rw-r--r--net/ipv4/inet_diag.c5
-rw-r--r--net/ipv4/ipconfig.c6
-rw-r--r--net/ipv4/ipip.c69
-rw-r--r--net/ipv4/syncookies.c2
-rw-r--r--net/ipv4/tcp.c5
-rw-r--r--net/ipv4/tcp_input.c45
-rw-r--r--net/ipv4/tcp_ipv4.c25
-rw-r--r--net/ipv4/tcp_minisocks.c8
-rw-r--r--net/ipv4/tcp_timer.c8
12 files changed, 331 insertions, 57 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 2a6abc163ed2..f6db227c1fd9 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -55,6 +55,7 @@
#include <linux/sysctl.h>
#endif
#include <linux/kmod.h>
+#include <linux/netconf.h>
#include <net/arp.h>
#include <net/ip.h>
@@ -1442,6 +1443,149 @@ static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla)
return 0;
}
+static int inet_netconf_msgsize_devconf(int type)
+{
+ int size = NLMSG_ALIGN(sizeof(struct netconfmsg))
+ + nla_total_size(4); /* NETCONFA_IFINDEX */
+
+ /* type -1 is used for ALL */
+ if (type == -1 || type == NETCONFA_FORWARDING)
+ size += nla_total_size(4);
+ if (type == -1 || type == NETCONFA_RP_FILTER)
+ size += nla_total_size(4);
+
+ return size;
+}
+
+static int inet_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
+ struct ipv4_devconf *devconf, u32 portid,
+ u32 seq, int event, unsigned int flags,
+ int type)
+{
+ struct nlmsghdr *nlh;
+ struct netconfmsg *ncm;
+
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg),
+ flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ ncm = nlmsg_data(nlh);
+ ncm->ncm_family = AF_INET;
+
+ if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0)
+ goto nla_put_failure;
+
+ /* type -1 is used for ALL */
+ if ((type == -1 || type == NETCONFA_FORWARDING) &&
+ nla_put_s32(skb, NETCONFA_FORWARDING,
+ IPV4_DEVCONF(*devconf, FORWARDING)) < 0)
+ goto nla_put_failure;
+ if ((type == -1 || type == NETCONFA_RP_FILTER) &&
+ nla_put_s32(skb, NETCONFA_RP_FILTER,
+ IPV4_DEVCONF(*devconf, RP_FILTER)) < 0)
+ goto nla_put_failure;
+
+ return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+}
+
+static void inet_netconf_notify_devconf(struct net *net, int type, int ifindex,
+ struct ipv4_devconf *devconf)
+{
+ struct sk_buff *skb;
+ int err = -ENOBUFS;
+
+ skb = nlmsg_new(inet_netconf_msgsize_devconf(type), GFP_ATOMIC);
+ if (skb == NULL)
+ goto errout;
+
+ err = inet_netconf_fill_devconf(skb, ifindex, devconf, 0, 0,
+ RTM_NEWNETCONF, 0, type);
+ if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet_netconf_msgsize_devconf() */
+ WARN_ON(err == -EMSGSIZE);
+ kfree_skb(skb);
+ goto errout;
+ }
+ rtnl_notify(skb, net, 0, RTNLGRP_IPV4_NETCONF, NULL, GFP_ATOMIC);
+ return;
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(net, RTNLGRP_IPV4_NETCONF, err);
+}
+
+static const struct nla_policy devconf_ipv4_policy[NETCONFA_MAX+1] = {
+ [NETCONFA_IFINDEX] = { .len = sizeof(int) },
+ [NETCONFA_FORWARDING] = { .len = sizeof(int) },
+ [NETCONFA_RP_FILTER] = { .len = sizeof(int) },
+};
+
+static int inet_netconf_get_devconf(struct sk_buff *in_skb,
+ struct nlmsghdr *nlh,
+ void *arg)
+{
+ struct net *net = sock_net(in_skb->sk);
+ struct nlattr *tb[NETCONFA_MAX+1];
+ struct netconfmsg *ncm;
+ struct sk_buff *skb;
+ struct ipv4_devconf *devconf;
+ struct in_device *in_dev;
+ struct net_device *dev;
+ int ifindex;
+ int err;
+
+ err = nlmsg_parse(nlh, sizeof(*ncm), tb, NETCONFA_MAX,
+ devconf_ipv4_policy);
+ if (err < 0)
+ goto errout;
+
+ err = EINVAL;
+ if (!tb[NETCONFA_IFINDEX])
+ goto errout;
+
+ ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]);
+ switch (ifindex) {
+ case NETCONFA_IFINDEX_ALL:
+ devconf = net->ipv4.devconf_all;
+ break;
+ case NETCONFA_IFINDEX_DEFAULT:
+ devconf = net->ipv4.devconf_dflt;
+ break;
+ default:
+ dev = __dev_get_by_index(net, ifindex);
+ if (dev == NULL)
+ goto errout;
+ in_dev = __in_dev_get_rtnl(dev);
+ if (in_dev == NULL)
+ goto errout;
+ devconf = &in_dev->cnf;
+ break;
+ }
+
+ err = -ENOBUFS;
+ skb = nlmsg_new(inet_netconf_msgsize_devconf(-1), GFP_ATOMIC);
+ if (skb == NULL)
+ goto errout;
+
+ err = inet_netconf_fill_devconf(skb, ifindex, devconf,
+ NETLINK_CB(in_skb).portid,
+ nlh->nlmsg_seq, RTM_NEWNETCONF, 0,
+ -1);
+ if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet_netconf_msgsize_devconf() */
+ WARN_ON(err == -EMSGSIZE);
+ kfree_skb(skb);
+ goto errout;
+ }
+ err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
+errout:
+ return err;
+}
+
#ifdef CONFIG_SYSCTL
static void devinet_copy_dflt_conf(struct net *net, int i)
@@ -1467,6 +1611,12 @@ static void inet_forward_change(struct net *net)
IPV4_DEVCONF_ALL(net, ACCEPT_REDIRECTS) = !on;
IPV4_DEVCONF_DFLT(net, FORWARDING) = on;
+ inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ NETCONFA_IFINDEX_ALL,
+ net->ipv4.devconf_all);
+ inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ NETCONFA_IFINDEX_DEFAULT,
+ net->ipv4.devconf_dflt);
for_each_netdev(net, dev) {
struct in_device *in_dev;
@@ -1474,8 +1624,11 @@ static void inet_forward_change(struct net *net)
dev_disable_lro(dev);
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
- if (in_dev)
+ if (in_dev) {
IN_DEV_CONF_SET(in_dev, FORWARDING, on);
+ inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ dev->ifindex, &in_dev->cnf);
+ }
rcu_read_unlock();
}
}
@@ -1501,6 +1654,23 @@ static int devinet_conf_proc(ctl_table *ctl, int write,
i == IPV4_DEVCONF_ROUTE_LOCALNET - 1)
if ((new_value == 0) && (old_value != 0))
rt_cache_flush(net);
+ if (i == IPV4_DEVCONF_RP_FILTER - 1 &&
+ new_value != old_value) {
+ int ifindex;
+
+ if (cnf == net->ipv4.devconf_dflt)
+ ifindex = NETCONFA_IFINDEX_DEFAULT;
+ else if (cnf == net->ipv4.devconf_all)
+ ifindex = NETCONFA_IFINDEX_ALL;
+ else {
+ struct in_device *idev =
+ container_of(cnf, struct in_device,
+ cnf);
+ ifindex = idev->dev->ifindex;
+ }
+ inet_netconf_notify_devconf(net, NETCONFA_RP_FILTER,
+ ifindex, cnf);
+ }
}
return ret;
@@ -1527,15 +1697,23 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
}
if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING)) {
inet_forward_change(net);
- } else if (*valp) {
+ } else {
struct ipv4_devconf *cnf = ctl->extra1;
struct in_device *idev =
container_of(cnf, struct in_device, cnf);
- dev_disable_lro(idev->dev);
+ if (*valp)
+ dev_disable_lro(idev->dev);
+ inet_netconf_notify_devconf(net,
+ NETCONFA_FORWARDING,
+ idev->dev->ifindex,
+ cnf);
}
rtnl_unlock();
rt_cache_flush(net);
- }
+ } else
+ inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ NETCONFA_IFINDEX_DEFAULT,
+ net->ipv4.devconf_dflt);
}
return ret;
@@ -1809,5 +1987,7 @@ void __init devinet_init(void)
rtnl_register(PF_INET, RTM_NEWADDR, inet_rtm_newaddr, NULL, NULL);
rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL, NULL);
rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr, NULL);
+ rtnl_register(PF_INET, RTM_GETNETCONF, inet_netconf_get_devconf,
+ NULL, NULL);
}
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 71b125cd5db1..4797a800faf8 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -803,7 +803,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
unsigned int bytes;
if (!new_size)
- new_size = 1;
+ new_size = 16;
bytes = new_size * sizeof(struct hlist_head *);
new_info_hash = fib_info_hash_alloc(bytes);
new_laddrhash = fib_info_hash_alloc(bytes);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index d34ce2972c8f..2026542d6836 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -521,21 +521,31 @@ static inline void syn_ack_recalc(struct request_sock *req, const int thresh,
int *expire, int *resend)
{
if (!rskq_defer_accept) {
- *expire = req->retrans >= thresh;
+ *expire = req->num_timeout >= thresh;
*resend = 1;
return;
}
- *expire = req->retrans >= thresh &&
- (!inet_rsk(req)->acked || req->retrans >= max_retries);
+ *expire = req->num_timeout >= thresh &&
+ (!inet_rsk(req)->acked || req->num_timeout >= max_retries);
/*
* Do not resend while waiting for data after ACK,
* start to resend on end of deferring period to give
* last chance for data or ACK to create established socket.
*/
*resend = !inet_rsk(req)->acked ||
- req->retrans >= rskq_defer_accept - 1;
+ req->num_timeout >= rskq_defer_accept - 1;
}
+int inet_rtx_syn_ack(struct sock *parent, struct request_sock *req)
+{
+ int err = req->rsk_ops->rtx_syn_ack(parent, req, NULL);
+
+ if (!err)
+ req->num_retrans++;
+ return err;
+}
+EXPORT_SYMBOL(inet_rtx_syn_ack);
+
void inet_csk_reqsk_queue_prune(struct sock *parent,
const unsigned long interval,
const unsigned long timeout,
@@ -599,13 +609,14 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
req->rsk_ops->syn_ack_timeout(parent, req);
if (!expire &&
(!resend ||
- !req->rsk_ops->rtx_syn_ack(parent, req, NULL) ||
+ !inet_rtx_syn_ack(parent, req) ||
inet_rsk(req)->acked)) {
unsigned long timeo;
- if (req->retrans++ == 0)
+ if (req->num_timeout++ == 0)
lopt->qlen_young--;
- timeo = min((timeout << req->retrans), max_rto);
+ timeo = min(timeout << req->num_timeout,
+ max_rto);
req->expires = now + timeo;
reqp = &req->dl_next;
continue;
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 0c34bfabc11f..cb98cbed1973 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -105,6 +105,9 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
r->id.idiag_src[0] = inet->inet_rcv_saddr;
r->id.idiag_dst[0] = inet->inet_daddr;
+ if (nla_put_u8(skb, INET_DIAG_SHUTDOWN, sk->sk_shutdown))
+ goto errout;
+
/* IPv6 dual-stack sockets use inet->tos for IPv4 connections,
* hence this needs to be included regardless of socket family.
*/
@@ -617,7 +620,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
r->idiag_family = sk->sk_family;
r->idiag_state = TCP_SYN_RECV;
r->idiag_timer = 1;
- r->idiag_retrans = req->retrans;
+ r->idiag_retrans = req->num_retrans;
r->id.idiag_if = sk->sk_bound_dev_if;
sock_diag_save_cookie(req, r->id.idiag_cookie);
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 798358b10717..d763701cff1b 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1500,8 +1500,10 @@ static int __init ip_auto_config(void)
* Clue in the operator.
*/
pr_info("IP-Config: Complete:\n");
- pr_info(" device=%s, addr=%pI4, mask=%pI4, gw=%pI4\n",
- ic_dev->name, &ic_myaddr, &ic_netmask, &ic_gateway);
+
+ pr_info(" device=%s, hwaddr=%*phC, ipaddr=%pI4, mask=%pI4, gw=%pI4\n",
+ ic_dev->name, ic_dev->addr_len, ic_dev->dev_addr,
+ &ic_myaddr, &ic_netmask, &ic_gateway);
pr_info(" host=%s, domain=%s, nis-domain=%s\n",
utsname()->nodename, ic_domain, utsname()->domainname);
pr_info(" bootserver=%pI4, rootserver=%pI4, rootpath=%s",
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index e15b45297c09..720855e41100 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -138,6 +138,7 @@ struct ipip_net {
static int ipip_tunnel_init(struct net_device *dev);
static void ipip_tunnel_setup(struct net_device *dev);
static void ipip_dev_free(struct net_device *dev);
+static struct rtnl_link_ops ipip_link_ops __read_mostly;
/*
* Locking : hash tables are protected by RCU and RTNL
@@ -305,6 +306,7 @@ static struct ip_tunnel *ipip_tunnel_locate(struct net *net,
goto failed_free;
strcpy(nt->parms.name, dev->name);
+ dev->rtnl_link_ops = &ipip_link_ops;
dev_hold(dev);
ipip_tunnel_link(ipn, nt);
@@ -479,6 +481,10 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (skb->protocol != htons(ETH_P_IP))
goto tx_error;
+ if (skb->ip_summed == CHECKSUM_PARTIAL &&
+ skb_checksum_help(skb))
+ goto tx_error;
+
if (tos & 1)
tos = old_iph->tos;
@@ -773,6 +779,11 @@ static void ipip_dev_free(struct net_device *dev)
free_netdev(dev);
}
+#define IPIP_FEATURES (NETIF_F_SG | \
+ NETIF_F_FRAGLIST | \
+ NETIF_F_HIGHDMA | \
+ NETIF_F_HW_CSUM)
+
static void ipip_tunnel_setup(struct net_device *dev)
{
dev->netdev_ops = &ipip_netdev_ops;
@@ -787,6 +798,9 @@ static void ipip_tunnel_setup(struct net_device *dev)
dev->features |= NETIF_F_NETNS_LOCAL;
dev->features |= NETIF_F_LLTX;
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+
+ dev->features |= IPIP_FEATURES;
+ dev->hw_features |= IPIP_FEATURES;
}
static int ipip_tunnel_init(struct net_device *dev)
@@ -829,6 +843,47 @@ static int __net_init ipip_fb_tunnel_init(struct net_device *dev)
return 0;
}
+static size_t ipip_get_size(const struct net_device *dev)
+{
+ return
+ /* IFLA_IPTUN_LINK */
+ nla_total_size(4) +
+ /* IFLA_IPTUN_LOCAL */
+ nla_total_size(4) +
+ /* IFLA_IPTUN_REMOTE */
+ nla_total_size(4) +
+ /* IFLA_IPTUN_TTL */
+ nla_total_size(1) +
+ /* IFLA_IPTUN_TOS */
+ nla_total_size(1) +
+ 0;
+}
+
+static int ipip_fill_info(struct sk_buff *skb, const struct net_device *dev)
+{
+ struct ip_tunnel *tunnel = netdev_priv(dev);
+ struct ip_tunnel_parm *parm = &tunnel->parms;
+
+ if (nla_put_u32(skb, IFLA_IPTUN_LINK, parm->link) ||
+ nla_put_be32(skb, IFLA_IPTUN_LOCAL, parm->iph.saddr) ||
+ nla_put_be32(skb, IFLA_IPTUN_REMOTE, parm->iph.daddr) ||
+ nla_put_u8(skb, IFLA_IPTUN_TTL, parm->iph.ttl) ||
+ nla_put_u8(skb, IFLA_IPTUN_TOS, parm->iph.tos))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+static struct rtnl_link_ops ipip_link_ops __read_mostly = {
+ .kind = "ipip",
+ .maxtype = IFLA_IPTUN_MAX,
+ .priv_size = sizeof(struct ip_tunnel),
+ .get_size = ipip_get_size,
+ .fill_info = ipip_fill_info,
+};
+
static struct xfrm_tunnel ipip_handler __read_mostly = {
.handler = ipip_rcv,
.err_handler = ipip_err,
@@ -925,14 +980,26 @@ static int __init ipip_init(void)
return err;
err = xfrm4_tunnel_register(&ipip_handler, AF_INET);
if (err < 0) {
- unregister_pernet_device(&ipip_net_ops);
pr_info("%s: can't register tunnel\n", __func__);
+ goto xfrm_tunnel_failed;
}
+ err = rtnl_link_register(&ipip_link_ops);
+ if (err < 0)
+ goto rtnl_link_failed;
+
+out:
return err;
+
+rtnl_link_failed:
+ xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
+xfrm_tunnel_failed:
+ unregister_pernet_device(&ipip_net_ops);
+ goto out;
}
static void __exit ipip_fini(void)
{
+ rtnl_link_unregister(&ipip_link_ops);
if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET))
pr_info("%s: can't deregister tunnel\n", __func__);
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index ba48e799b031..b236ef04914f 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -340,7 +340,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
}
req->expires = 0UL;
- req->retrans = 0;
+ req->num_retrans = 0;
/*
* We need to lookup the route here to get at the correct
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 197c0008503c..733f48593ec3 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -536,13 +536,14 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
struct tcp_sock *tp = tcp_sk(sk);
int answ;
+ bool slow;
switch (cmd) {
case SIOCINQ:
if (sk->sk_state == TCP_LISTEN)
return -EINVAL;
- lock_sock(sk);
+ slow = lock_sock_fast(sk);
if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV))
answ = 0;
else if (sock_flag(sk, SOCK_URGINLINE) ||
@@ -557,7 +558,7 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
answ--;
} else
answ = tp->urg_seq - tp->copied_seq;
- release_sock(sk);
+ unlock_sock_fast(sk, slow);
break;
case SIOCATMARK:
answ = tp->urg_data && tp->urg_seq == tp->copied_seq;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 2c2b13a999ea..7839d51fb65b 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3552,6 +3552,24 @@ static bool tcp_process_frto(struct sock *sk, int flag)
return false;
}
+/* RFC 5961 7 [ACK Throttling] */
+static void tcp_send_challenge_ack(struct sock *sk)
+{
+ /* unprotected vars, we dont care of overwrites */
+ static u32 challenge_timestamp;
+ static unsigned int challenge_count;
+ u32 now = jiffies / HZ;
+
+ if (now != challenge_timestamp) {
+ challenge_timestamp = now;
+ challenge_count = 0;
+ }
+ if (++challenge_count <= sysctl_tcp_challenge_ack_limit) {
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
+ tcp_send_ack(sk);
+ }
+}
+
/* This routine deals with incoming acks, but not outgoing ones. */
static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
{
@@ -3571,8 +3589,14 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
/* If the ack is older than previous acks
* then we can probably ignore it.
*/
- if (before(ack, prior_snd_una))
+ if (before(ack, prior_snd_una)) {
+ /* RFC 5961 5.2 [Blind Data Injection Attack].[Mitigation] */
+ if (before(ack, prior_snd_una - tp->max_window)) {
+ tcp_send_challenge_ack(sk);
+ return -1;
+ }
goto old_ack;
+ }
/* If the ack includes data we haven't sent yet, discard
* this segment (RFC793 Section 3.9).
@@ -5244,23 +5268,6 @@ out:
}
#endif /* CONFIG_NET_DMA */
-static void tcp_send_challenge_ack(struct sock *sk)
-{
- /* unprotected vars, we dont care of overwrites */
- static u32 challenge_timestamp;
- static unsigned int challenge_count;
- u32 now = jiffies / HZ;
-
- if (now != challenge_timestamp) {
- challenge_timestamp = now;
- challenge_count = 0;
- }
- if (++challenge_count <= sysctl_tcp_challenge_ack_limit) {
- NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
- tcp_send_ack(sk);
- }
-}
-
/* Does PAWS and seqno based validation of an incoming segment, flags will
* play significant role here.
*/
@@ -5988,7 +5995,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
*/
if (req) {
tcp_synack_rtt_meas(sk, req);
- tp->total_retrans = req->retrans;
+ tp->total_retrans = req->num_retrans;
reqsk_fastopen_remove(sk, req, false);
} else {
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 0c4a64355603..9dd5b34eb112 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -877,10 +877,13 @@ static int tcp_v4_send_synack(struct sock *sk, struct dst_entry *dst,
}
static int tcp_v4_rtx_synack(struct sock *sk, struct request_sock *req,
- struct request_values *rvp)
+ struct request_values *rvp)
{
- TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS);
- return tcp_v4_send_synack(sk, NULL, req, rvp, 0, false);
+ int res = tcp_v4_send_synack(sk, NULL, req, rvp, 0, false);
+
+ if (!res)
+ TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS);
+ return res;
}
/*
@@ -1070,7 +1073,7 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family)
}
EXPORT_SYMBOL(tcp_md5_do_del);
-void tcp_clear_md5_list(struct sock *sk)
+static void tcp_clear_md5_list(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
struct tcp_md5sig_key *key;
@@ -1386,7 +1389,8 @@ static int tcp_v4_conn_req_fastopen(struct sock *sk,
struct sock *child;
int err;
- req->retrans = 0;
+ req->num_retrans = 0;
+ req->num_timeout = 0;
req->sk = NULL;
child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb, req, NULL);
@@ -1741,7 +1745,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
tcp_initialize_rcv_mss(newsk);
tcp_synack_rtt_meas(newsk, req);
- newtp->total_retrans = req->retrans;
+ newtp->total_retrans = req->num_retrans;
#ifdef CONFIG_TCP_MD5SIG
/* Copy over the MD5 key from the original socket */
@@ -1919,7 +1923,6 @@ EXPORT_SYMBOL(tcp_v4_do_rcv);
void tcp_v4_early_demux(struct sk_buff *skb)
{
- struct net *net = dev_net(skb->dev);
const struct iphdr *iph;
const struct tcphdr *th;
struct sock *sk;
@@ -1927,16 +1930,16 @@ void tcp_v4_early_demux(struct sk_buff *skb)
if (skb->pkt_type != PACKET_HOST)
return;
- if (!pskb_may_pull(skb, ip_hdrlen(skb) + sizeof(struct tcphdr)))
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + sizeof(struct tcphdr)))
return;
iph = ip_hdr(skb);
- th = (struct tcphdr *) ((char *)iph + ip_hdrlen(skb));
+ th = tcp_hdr(skb);
if (th->doff < sizeof(struct tcphdr) / 4)
return;
- sk = __inet_lookup_established(net, &tcp_hashinfo,
+ sk = __inet_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
iph->saddr, th->source,
iph->daddr, ntohs(th->dest),
skb->skb_iif);
@@ -2640,7 +2643,7 @@ static void get_openreq4(const struct sock *sk, const struct request_sock *req,
0, 0, /* could print option size, but that is af dependent. */
1, /* timers active (only the expire timer) */
jiffies_delta_to_clock_t(delta),
- req->retrans,
+ req->num_timeout,
from_kuid_munged(seq_user_ns(f), uid),
0, /* non standard timer */
0, /* open_requests have no inode */
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index a7302d974f32..f35f2dfb6401 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -553,7 +553,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
* it can be estimated (approximately)
* from another data.
*/
- tmp_opt.ts_recent_stamp = get_seconds() - ((TCP_TIMEOUT_INIT/HZ)<<req->retrans);
+ tmp_opt.ts_recent_stamp = get_seconds() - ((TCP_TIMEOUT_INIT/HZ)<<req->num_timeout);
paws_reject = tcp_paws_reject(&tmp_opt, th->rst);
}
}
@@ -582,7 +582,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
* Note that even if there is new data in the SYN packet
* they will be thrown away too.
*/
- req->rsk_ops->rtx_syn_ack(sk, req, NULL);
+ inet_rtx_syn_ack(sk, req);
return NULL;
}
@@ -696,7 +696,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
/* Got ACK for our SYNACK, so update baseline for SYNACK RTT sample. */
if (tmp_opt.saw_tstamp && tmp_opt.rcv_tsecr)
tcp_rsk(req)->snt_synack = tmp_opt.rcv_tsecr;
- else if (req->retrans) /* don't take RTT sample if retrans && ~TS */
+ else if (req->num_retrans) /* don't take RTT sample if retrans && ~TS */
tcp_rsk(req)->snt_synack = 0;
/* For Fast Open no more processing is needed (sk is the
@@ -706,7 +706,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
return sk;
/* While TCP_DEFER_ACCEPT is active, drop bare ACK. */
- if (req->retrans < inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
+ if (req->num_timeout < inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
inet_rsk(req)->acked = 1;
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPDEFERACCEPTDROP);
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index d47c1b4421a3..b78aac30c498 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -318,7 +318,7 @@ static void tcp_fastopen_synack_timer(struct sock *sk)
req = tcp_sk(sk)->fastopen_rsk;
req->rsk_ops->syn_ack_timeout(sk, req);
- if (req->retrans >= max_retries) {
+ if (req->num_timeout >= max_retries) {
tcp_write_err(sk);
return;
}
@@ -327,10 +327,10 @@ static void tcp_fastopen_synack_timer(struct sock *sk)
* regular retransmit because if the child socket has been accepted
* it's not good to give up too easily.
*/
- req->rsk_ops->rtx_syn_ack(sk, req, NULL);
- req->retrans++;
+ inet_rtx_syn_ack(sk, req);
+ req->num_timeout++;
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
- TCP_TIMEOUT_INIT << req->retrans, TCP_RTO_MAX);
+ TCP_TIMEOUT_INIT << req->num_timeout, TCP_RTO_MAX);
}
/*
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-18 18:43:00 +0100