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-rw-r--r--net/ipv4/devinet.c4
-rw-r--r--net/ipv4/igmp.c9
-rw-r--r--net/ipv4/inet_hashtables.c42
-rw-r--r--net/ipv4/inet_timewait_sock.c58
-rw-r--r--net/ipv4/ip_gre.c12
-rw-r--r--net/ipv4/netfilter/nf_flow_table_ipv4.c0
-rw-r--r--net/ipv4/ping.c12
-rw-r--r--net/ipv4/route.c24
-rw-r--r--net/ipv4/syncookies.c8
-rw-r--r--net/ipv4/tcp.c16
-rw-r--r--net/ipv4/tcp_input.c15
-rw-r--r--net/ipv4/tcp_ipv4.c2
-rw-r--r--net/ipv4/tcp_minisocks.c2
-rw-r--r--net/ipv4/tcp_output.c1
-rw-r--r--net/ipv4/tcp_rate.c11
15 files changed, 162 insertions, 54 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 53a6b14dc50a..3d6d33ac20cc 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -536,10 +536,8 @@ static int __inet_insert_ifa(struct in_ifaddr *ifa, struct nlmsghdr *nlh,
return ret;
}
- if (!(ifa->ifa_flags & IFA_F_SECONDARY)) {
- prandom_seed((__force u32) ifa->ifa_local);
+ if (!(ifa->ifa_flags & IFA_F_SECONDARY))
ifap = last_primary;
- }
rcu_assign_pointer(ifa->ifa_next, *ifap);
rcu_assign_pointer(*ifap, ifa);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 2ad3c7b42d6d..1d9e6d5e9a76 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -2403,9 +2403,10 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
/* decrease mem now to avoid the memleak warning */
atomic_sub(struct_size(psl, sl_addr, psl->sl_max),
&sk->sk_omem_alloc);
- kfree_rcu(psl, rcu);
}
rcu_assign_pointer(pmc->sflist, newpsl);
+ if (psl)
+ kfree_rcu(psl, rcu);
psl = newpsl;
}
rv = 1; /* > 0 for insert logic below if sl_count is 0 */
@@ -2507,11 +2508,13 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
/* decrease mem now to avoid the memleak warning */
atomic_sub(struct_size(psl, sl_addr, psl->sl_max),
&sk->sk_omem_alloc);
- kfree_rcu(psl, rcu);
- } else
+ } else {
(void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode,
0, NULL, 0);
+ }
rcu_assign_pointer(pmc->sflist, newpsl);
+ if (psl)
+ kfree_rcu(psl, rcu);
pmc->sfmode = msf->imsf_fmode;
err = 0;
done:
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 17440840a791..a5d57fa679ca 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -504,7 +504,7 @@ not_unique:
return -EADDRNOTAVAIL;
}
-static u32 inet_sk_port_offset(const struct sock *sk)
+static u64 inet_sk_port_offset(const struct sock *sk)
{
const struct inet_sock *inet = inet_sk(sk);
@@ -726,15 +726,17 @@ EXPORT_SYMBOL_GPL(inet_unhash);
* Note that we use 32bit integers (vs RFC 'short integers')
* because 2^16 is not a multiple of num_ephemeral and this
* property might be used by clever attacker.
- * RFC claims using TABLE_LENGTH=10 buckets gives an improvement,
- * we use 256 instead to really give more isolation and
- * privacy, this only consumes 1 KB of kernel memory.
+ * RFC claims using TABLE_LENGTH=10 buckets gives an improvement, though
+ * attacks were since demonstrated, thus we use 65536 instead to really
+ * give more isolation and privacy, at the expense of 256kB of kernel
+ * memory.
*/
-#define INET_TABLE_PERTURB_SHIFT 8
-static u32 table_perturb[1 << INET_TABLE_PERTURB_SHIFT];
+#define INET_TABLE_PERTURB_SHIFT 16
+#define INET_TABLE_PERTURB_SIZE (1 << INET_TABLE_PERTURB_SHIFT)
+static u32 *table_perturb;
int __inet_hash_connect(struct inet_timewait_death_row *death_row,
- struct sock *sk, u32 port_offset,
+ struct sock *sk, u64 port_offset,
int (*check_established)(struct inet_timewait_death_row *,
struct sock *, __u16, struct inet_timewait_sock **))
{
@@ -774,10 +776,13 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
if (likely(remaining > 1))
remaining &= ~1U;
- net_get_random_once(table_perturb, sizeof(table_perturb));
- index = hash_32(port_offset, INET_TABLE_PERTURB_SHIFT);
+ net_get_random_once(table_perturb,
+ INET_TABLE_PERTURB_SIZE * sizeof(*table_perturb));
+ index = port_offset & (INET_TABLE_PERTURB_SIZE - 1);
+
+ offset = READ_ONCE(table_perturb[index]) + (port_offset >> 32);
+ offset %= remaining;
- offset = (READ_ONCE(table_perturb[index]) + port_offset) % remaining;
/* In first pass we try ports of @low parity.
* inet_csk_get_port() does the opposite choice.
*/
@@ -831,11 +836,12 @@ next_port:
return -EADDRNOTAVAIL;
ok:
- /* If our first attempt found a candidate, skip next candidate
- * in 1/16 of cases to add some noise.
+ /* Here we want to add a little bit of randomness to the next source
+ * port that will be chosen. We use a max() with a random here so that
+ * on low contention the randomness is maximal and on high contention
+ * it may be inexistent.
*/
- if (!i && !(prandom_u32() % 16))
- i = 2;
+ i = max_t(int, i, (prandom_u32() & 7) * 2);
WRITE_ONCE(table_perturb[index], READ_ONCE(table_perturb[index]) + i + 2);
/* Head lock still held and bh's disabled */
@@ -859,7 +865,7 @@ ok:
int inet_hash_connect(struct inet_timewait_death_row *death_row,
struct sock *sk)
{
- u32 port_offset = 0;
+ u64 port_offset = 0;
if (!inet_sk(sk)->inet_num)
port_offset = inet_sk_port_offset(sk);
@@ -909,6 +915,12 @@ void __init inet_hashinfo2_init(struct inet_hashinfo *h, const char *name,
low_limit,
high_limit);
init_hashinfo_lhash2(h);
+
+ /* this one is used for source ports of outgoing connections */
+ table_perturb = kmalloc_array(INET_TABLE_PERTURB_SIZE,
+ sizeof(*table_perturb), GFP_KERNEL);
+ if (!table_perturb)
+ panic("TCP: failed to alloc table_perturb");
}
int inet_hashinfo2_init_mod(struct inet_hashinfo *h)
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 9e0bbd026560..0ec501845cb3 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -52,7 +52,8 @@ static void inet_twsk_kill(struct inet_timewait_sock *tw)
spin_unlock(lock);
/* Disassociate with bind bucket. */
- bhead = &hashinfo->bhash[tw->tw_bslot];
+ bhead = &hashinfo->bhash[inet_bhashfn(twsk_net(tw), tw->tw_num,
+ hashinfo->bhash_size)];
spin_lock(&bhead->lock);
inet_twsk_bind_unhash(tw, hashinfo);
@@ -111,12 +112,8 @@ void inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
Note, that any socket with inet->num != 0 MUST be bound in
binding cache, even if it is closed.
*/
- /* Cache inet_bhashfn(), because 'struct net' might be no longer
- * available later in inet_twsk_kill().
- */
- tw->tw_bslot = inet_bhashfn(twsk_net(tw), inet->inet_num,
- hashinfo->bhash_size);
- bhead = &hashinfo->bhash[tw->tw_bslot];
+ bhead = &hashinfo->bhash[inet_bhashfn(twsk_net(tw), inet->inet_num,
+ hashinfo->bhash_size)];
spin_lock(&bhead->lock);
tw->tw_tb = icsk->icsk_bind_hash;
WARN_ON(!icsk->icsk_bind_hash);
@@ -257,3 +254,50 @@ void __inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo, bool rearm)
}
}
EXPORT_SYMBOL_GPL(__inet_twsk_schedule);
+
+void inet_twsk_purge(struct inet_hashinfo *hashinfo, int family)
+{
+ struct inet_timewait_sock *tw;
+ struct sock *sk;
+ struct hlist_nulls_node *node;
+ unsigned int slot;
+
+ for (slot = 0; slot <= hashinfo->ehash_mask; slot++) {
+ struct inet_ehash_bucket *head = &hashinfo->ehash[slot];
+restart_rcu:
+ cond_resched();
+ rcu_read_lock();
+restart:
+ sk_nulls_for_each_rcu(sk, node, &head->chain) {
+ if (sk->sk_state != TCP_TIME_WAIT)
+ continue;
+ tw = inet_twsk(sk);
+ if ((tw->tw_family != family) ||
+ refcount_read(&twsk_net(tw)->ns.count))
+ continue;
+
+ if (unlikely(!refcount_inc_not_zero(&tw->tw_refcnt)))
+ continue;
+
+ if (unlikely((tw->tw_family != family) ||
+ refcount_read(&twsk_net(tw)->ns.count))) {
+ inet_twsk_put(tw);
+ goto restart;
+ }
+
+ rcu_read_unlock();
+ local_bh_disable();
+ inet_twsk_deschedule_put(tw);
+ local_bh_enable();
+ goto restart_rcu;
+ }
+ /* If the nulls value we got at the end of this lookup is
+ * not the expected one, we must restart lookup.
+ * We probably met an item that was moved to another chain.
+ */
+ if (get_nulls_value(node) != slot)
+ goto restart;
+ rcu_read_unlock();
+ }
+}
+EXPORT_SYMBOL_GPL(inet_twsk_purge);
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 365caebf51ab..aacee9dd771b 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -459,14 +459,12 @@ static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
__be16 proto)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
-
- if (tunnel->parms.o_flags & TUNNEL_SEQ)
- tunnel->o_seqno++;
+ __be16 flags = tunnel->parms.o_flags;
/* Push GRE header. */
gre_build_header(skb, tunnel->tun_hlen,
- tunnel->parms.o_flags, proto, tunnel->parms.o_key,
- htonl(tunnel->o_seqno));
+ flags, proto, tunnel->parms.o_key,
+ (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno)) : 0);
ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol);
}
@@ -504,7 +502,7 @@ static void gre_fb_xmit(struct sk_buff *skb, struct net_device *dev,
(TUNNEL_CSUM | TUNNEL_KEY | TUNNEL_SEQ);
gre_build_header(skb, tunnel_hlen, flags, proto,
tunnel_id_to_key32(tun_info->key.tun_id),
- (flags & TUNNEL_SEQ) ? htonl(tunnel->o_seqno++) : 0);
+ (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno)) : 0);
ip_md_tunnel_xmit(skb, dev, IPPROTO_GRE, tunnel_hlen);
@@ -581,7 +579,7 @@ static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev)
}
gre_build_header(skb, 8, TUNNEL_SEQ,
- proto, 0, htonl(tunnel->o_seqno++));
+ proto, 0, htonl(atomic_fetch_inc(&tunnel->o_seqno)));
ip_md_tunnel_xmit(skb, dev, IPPROTO_GRE, tunnel_hlen);
diff --git a/net/ipv4/netfilter/nf_flow_table_ipv4.c b/net/ipv4/netfilter/nf_flow_table_ipv4.c
deleted file mode 100644
index e69de29bb2d1..000000000000
--- a/net/ipv4/netfilter/nf_flow_table_ipv4.c
+++ /dev/null
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 3ee947557b88..aa9a11b20d18 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -305,6 +305,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
struct net *net = sock_net(sk);
if (sk->sk_family == AF_INET) {
struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
+ u32 tb_id = RT_TABLE_LOCAL;
int chk_addr_ret;
if (addr_len < sizeof(*addr))
@@ -318,7 +319,8 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
pr_debug("ping_check_bind_addr(sk=%p,addr=%pI4,port=%d)\n",
sk, &addr->sin_addr.s_addr, ntohs(addr->sin_port));
- chk_addr_ret = inet_addr_type(net, addr->sin_addr.s_addr);
+ tb_id = l3mdev_fib_table_by_index(net, sk->sk_bound_dev_if) ? : tb_id;
+ chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id);
if (!inet_addr_valid_or_nonlocal(net, inet_sk(sk),
addr->sin_addr.s_addr,
@@ -355,6 +357,14 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
return -ENODEV;
}
}
+
+ if (!dev && sk->sk_bound_dev_if) {
+ dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
+ if (!dev) {
+ rcu_read_unlock();
+ return -ENODEV;
+ }
+ }
has_addr = pingv6_ops.ipv6_chk_addr(net, &addr->sin6_addr, dev,
scoped);
rcu_read_unlock();
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 98c6f3429593..ed01063d8f30 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1726,6 +1726,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
struct in_device *in_dev = __in_dev_get_rcu(dev);
unsigned int flags = RTCF_MULTICAST;
struct rtable *rth;
+ bool no_policy;
u32 itag = 0;
int err;
@@ -1736,8 +1737,12 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
if (our)
flags |= RTCF_LOCAL;
+ no_policy = IN_DEV_ORCONF(in_dev, NOPOLICY);
+ if (no_policy)
+ IPCB(skb)->flags |= IPSKB_NOPOLICY;
+
rth = rt_dst_alloc(dev_net(dev)->loopback_dev, flags, RTN_MULTICAST,
- IN_DEV_ORCONF(in_dev, NOPOLICY), false);
+ no_policy, false);
if (!rth)
return -ENOBUFS;
@@ -1753,6 +1758,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
#endif
RT_CACHE_STAT_INC(in_slow_mc);
+ skb_dst_drop(skb);
skb_dst_set(skb, &rth->dst);
return 0;
}
@@ -1795,7 +1801,7 @@ static int __mkroute_input(struct sk_buff *skb,
struct rtable *rth;
int err;
struct in_device *out_dev;
- bool do_cache;
+ bool do_cache, no_policy;
u32 itag = 0;
/* get a working reference to the output device */
@@ -1840,6 +1846,10 @@ static int __mkroute_input(struct sk_buff *skb,
}
}
+ no_policy = IN_DEV_ORCONF(in_dev, NOPOLICY);
+ if (no_policy)
+ IPCB(skb)->flags |= IPSKB_NOPOLICY;
+
fnhe = find_exception(nhc, daddr);
if (do_cache) {
if (fnhe)
@@ -1852,8 +1862,7 @@ static int __mkroute_input(struct sk_buff *skb,
}
}
- rth = rt_dst_alloc(out_dev->dev, 0, res->type,
- IN_DEV_ORCONF(in_dev, NOPOLICY),
+ rth = rt_dst_alloc(out_dev->dev, 0, res->type, no_policy,
IN_DEV_ORCONF(out_dev, NOXFRM));
if (!rth) {
err = -ENOBUFS;
@@ -2228,6 +2237,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
struct rtable *rth;
struct flowi4 fl4;
bool do_cache = true;
+ bool no_policy;
/* IP on this device is disabled. */
@@ -2346,6 +2356,10 @@ brd_input:
RT_CACHE_STAT_INC(in_brd);
local_input:
+ no_policy = IN_DEV_ORCONF(in_dev, NOPOLICY);
+ if (no_policy)
+ IPCB(skb)->flags |= IPSKB_NOPOLICY;
+
do_cache &= res->fi && !itag;
if (do_cache) {
struct fib_nh_common *nhc = FIB_RES_NHC(*res);
@@ -2360,7 +2374,7 @@ local_input:
rth = rt_dst_alloc(ip_rt_get_dev(net, res),
flags | RTCF_LOCAL, res->type,
- IN_DEV_ORCONF(in_dev, NOPOLICY), false);
+ no_policy, false);
if (!rth)
goto e_nobufs;
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 2cb3b852d148..f33c31dd7366 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -281,6 +281,7 @@ bool cookie_ecn_ok(const struct tcp_options_received *tcp_opt,
EXPORT_SYMBOL(cookie_ecn_ok);
struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops,
+ const struct tcp_request_sock_ops *af_ops,
struct sock *sk,
struct sk_buff *skb)
{
@@ -297,6 +298,10 @@ struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops,
return NULL;
treq = tcp_rsk(req);
+
+ /* treq->af_specific might be used to perform TCP_MD5 lookup */
+ treq->af_specific = af_ops;
+
treq->syn_tos = TCP_SKB_CB(skb)->ip_dsfield;
#if IS_ENABLED(CONFIG_MPTCP)
treq->is_mptcp = sk_is_mptcp(sk);
@@ -364,7 +369,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
goto out;
ret = NULL;
- req = cookie_tcp_reqsk_alloc(&tcp_request_sock_ops, sk, skb);
+ req = cookie_tcp_reqsk_alloc(&tcp_request_sock_ops,
+ &tcp_request_sock_ipv4_ops, sk, skb);
if (!req)
goto out;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cf18fbcbf123..bb7ef45408e1 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2335,8 +2335,10 @@ static int tcp_recvmsg_locked(struct sock *sk, struct msghdr *msg, size_t len,
if (sk->sk_state == TCP_LISTEN)
goto out;
- if (tp->recvmsg_inq)
+ if (tp->recvmsg_inq) {
*cmsg_flags = TCP_CMSG_INQ;
+ msg->msg_get_inq = 1;
+ }
timeo = sock_rcvtimeo(sk, nonblock);
/* Urgent data needs to be handled specially. */
@@ -2559,7 +2561,7 @@ recv_sndq:
int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock,
int flags, int *addr_len)
{
- int cmsg_flags = 0, ret, inq;
+ int cmsg_flags = 0, ret;
struct scm_timestamping_internal tss;
if (unlikely(flags & MSG_ERRQUEUE))
@@ -2576,12 +2578,14 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock,
release_sock(sk);
sk_defer_free_flush(sk);
- if (cmsg_flags && ret >= 0) {
+ if ((cmsg_flags || msg->msg_get_inq) && ret >= 0) {
if (cmsg_flags & TCP_CMSG_TS)
tcp_recv_timestamp(msg, sk, &tss);
- if (cmsg_flags & TCP_CMSG_INQ) {
- inq = tcp_inq_hint(sk);
- put_cmsg(msg, SOL_TCP, TCP_CM_INQ, sizeof(inq), &inq);
+ if (msg->msg_get_inq) {
+ msg->msg_inq = tcp_inq_hint(sk);
+ if (cmsg_flags & TCP_CMSG_INQ)
+ put_cmsg(msg, SOL_TCP, TCP_CM_INQ,
+ sizeof(msg->msg_inq), &msg->msg_inq);
}
}
return ret;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 2088f93fa37b..60f99e9fb6d1 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3867,7 +3867,8 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
tcp_process_tlp_ack(sk, ack, flag);
if (tcp_ack_is_dubious(sk, flag)) {
- if (!(flag & (FLAG_SND_UNA_ADVANCED | FLAG_NOT_DUP))) {
+ if (!(flag & (FLAG_SND_UNA_ADVANCED |
+ FLAG_NOT_DUP | FLAG_DSACKING_ACK))) {
num_dupack = 1;
/* Consider if pure acks were aggregated in tcp_add_backlog() */
if (!(flag & FLAG_DATA))
@@ -5454,7 +5455,17 @@ static void tcp_new_space(struct sock *sk)
INDIRECT_CALL_1(sk->sk_write_space, sk_stream_write_space, sk);
}
-static void tcp_check_space(struct sock *sk)
+/* Caller made space either from:
+ * 1) Freeing skbs in rtx queues (after tp->snd_una has advanced)
+ * 2) Sent skbs from output queue (and thus advancing tp->snd_nxt)
+ *
+ * We might be able to generate EPOLLOUT to the application if:
+ * 1) Space consumed in output/rtx queues is below sk->sk_sndbuf/2
+ * 2) notsent amount (tp->write_seq - tp->snd_nxt) became
+ * small enough that tcp_stream_memory_free() decides it
+ * is time to generate EPOLLOUT.
+ */
+void tcp_check_space(struct sock *sk)
{
/* pairs with tcp_poll() */
smp_mb();
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f9cec624068d..457f5b5d5d4a 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -3173,6 +3173,8 @@ static void __net_exit tcp_sk_exit_batch(struct list_head *net_exit_list)
{
struct net *net;
+ inet_twsk_purge(&tcp_hashinfo, AF_INET);
+
list_for_each_entry(net, net_exit_list, exit_list)
tcp_fastopen_ctx_destroy(net);
}
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 6366df7aaf2a..6854bb1fb32b 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -531,7 +531,7 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
newtp->tsoffset = treq->ts_off;
#ifdef CONFIG_TCP_MD5SIG
newtp->md5sig_info = NULL; /*XXX*/
- if (newtp->af_specific->md5_lookup(sk, newsk))
+ if (treq->af_specific->req_md5_lookup(sk, req_to_sk(req)))
newtp->tcp_header_len += TCPOLEN_MD5SIG_ALIGNED;
#endif
if (skb->len >= TCP_MSS_DEFAULT + newtp->tcp_header_len)
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 9ede847f4199..1ca2f28c9981 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -82,6 +82,7 @@ static void tcp_event_new_data_sent(struct sock *sk, struct sk_buff *skb)
NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPORIGDATASENT,
tcp_skb_pcount(skb));
+ tcp_check_space(sk);
}
/* SND.NXT, if window was not shrunk or the amount of shrunk was less than one
diff --git a/net/ipv4/tcp_rate.c b/net/ipv4/tcp_rate.c
index fbab921670cc..9a8e014d9b5b 100644
--- a/net/ipv4/tcp_rate.c
+++ b/net/ipv4/tcp_rate.c
@@ -74,27 +74,32 @@ void tcp_rate_skb_sent(struct sock *sk, struct sk_buff *skb)
*
* If an ACK (s)acks multiple skbs (e.g., stretched-acks), this function is
* called multiple times. We favor the information from the most recently
- * sent skb, i.e., the skb with the highest prior_delivered count.
+ * sent skb, i.e., the skb with the most recently sent time and the highest
+ * sequence.
*/
void tcp_rate_skb_delivered(struct sock *sk, struct sk_buff *skb,
struct rate_sample *rs)
{
struct tcp_sock *tp = tcp_sk(sk);
struct tcp_skb_cb *scb = TCP_SKB_CB(skb);
+ u64 tx_tstamp;
if (!scb->tx.delivered_mstamp)
return;
+ tx_tstamp = tcp_skb_timestamp_us(skb);
if (!rs->prior_delivered ||
- after(scb->tx.delivered, rs->prior_delivered)) {
+ tcp_skb_sent_after(tx_tstamp, tp->first_tx_mstamp,
+ scb->end_seq, rs->last_end_seq)) {
rs->prior_delivered_ce = scb->tx.delivered_ce;
rs->prior_delivered = scb->tx.delivered;
rs->prior_mstamp = scb->tx.delivered_mstamp;
rs->is_app_limited = scb->tx.is_app_limited;
rs->is_retrans = scb->sacked & TCPCB_RETRANS;
+ rs->last_end_seq = scb->end_seq;
/* Record send time of most recently ACKed packet: */
- tp->first_tx_mstamp = tcp_skb_timestamp_us(skb);
+ tp->first_tx_mstamp = tx_tstamp;
/* Find the duration of the "send phase" of this window: */
rs->interval_us = tcp_stamp_us_delta(tp->first_tx_mstamp,
scb->tx.first_tx_mstamp);
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