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-rw-r--r--net/ipv4/bpf_tcp_ca.c19
-rw-r--r--net/ipv4/fib_frontend.c1
-rw-r--r--net/ipv4/inet_diag.c20
-rw-r--r--net/ipv4/ip_output.c3
-rw-r--r--net/ipv4/ip_tunnel_core.c1
-rw-r--r--net/ipv4/nexthop.c17
-rw-r--r--net/ipv4/route.c14
-rw-r--r--net/ipv4/tcp.c29
-rw-r--r--net/ipv4/tcp_cong.c27
-rw-r--r--net/ipv4/tcp_input.c31
-rw-r--r--net/ipv4/tcp_output.c1
11 files changed, 75 insertions, 88 deletions
diff --git a/net/ipv4/bpf_tcp_ca.c b/net/ipv4/bpf_tcp_ca.c
index e3939f76b024..74a2ef598c31 100644
--- a/net/ipv4/bpf_tcp_ca.c
+++ b/net/ipv4/bpf_tcp_ca.c
@@ -28,23 +28,18 @@ static u32 unsupported_ops[] = {
static const struct btf_type *tcp_sock_type;
static u32 tcp_sock_id, sock_id;
-static int btf_sk_storage_get_ids[5];
static struct bpf_func_proto btf_sk_storage_get_proto __read_mostly;
-
-static int btf_sk_storage_delete_ids[5];
static struct bpf_func_proto btf_sk_storage_delete_proto __read_mostly;
-static void convert_sk_func_proto(struct bpf_func_proto *to, int *to_btf_ids,
- const struct bpf_func_proto *from)
+static void convert_sk_func_proto(struct bpf_func_proto *to, const struct bpf_func_proto *from)
{
int i;
*to = *from;
- to->btf_id = to_btf_ids;
for (i = 0; i < ARRAY_SIZE(to->arg_type); i++) {
if (to->arg_type[i] == ARG_PTR_TO_SOCKET) {
to->arg_type[i] = ARG_PTR_TO_BTF_ID;
- to->btf_id[i] = tcp_sock_id;
+ to->arg_btf_id[i] = &tcp_sock_id;
}
}
}
@@ -64,12 +59,8 @@ static int bpf_tcp_ca_init(struct btf *btf)
tcp_sock_id = type_id;
tcp_sock_type = btf_type_by_id(btf, tcp_sock_id);
- convert_sk_func_proto(&btf_sk_storage_get_proto,
- btf_sk_storage_get_ids,
- &bpf_sk_storage_get_proto);
- convert_sk_func_proto(&btf_sk_storage_delete_proto,
- btf_sk_storage_delete_ids,
- &bpf_sk_storage_delete_proto);
+ convert_sk_func_proto(&btf_sk_storage_get_proto, &bpf_sk_storage_get_proto);
+ convert_sk_func_proto(&btf_sk_storage_delete_proto, &bpf_sk_storage_delete_proto);
return 0;
}
@@ -185,8 +176,8 @@ static const struct bpf_func_proto bpf_tcp_send_ack_proto = {
/* In case we want to report error later */
.ret_type = RET_INTEGER,
.arg1_type = ARG_PTR_TO_BTF_ID,
+ .arg1_btf_id = &tcp_sock_id,
.arg2_type = ARG_ANYTHING,
- .btf_id = &tcp_sock_id,
};
static const struct bpf_func_proto *
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 41079490a118..86a23e4a6a50 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -362,6 +362,7 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
fl4.flowi4_tun_key.tun_id = 0;
fl4.flowi4_flags = 0;
fl4.flowi4_uid = sock_net_uid(net, NULL);
+ fl4.flowi4_multipath_hash = 0;
no_addr = idev->ifa_list == NULL;
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 93816d47e55a..366a4507b5a3 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -203,8 +203,8 @@ errout:
}
EXPORT_SYMBOL_GPL(inet_diag_msg_attrs_fill);
-static void inet_diag_parse_attrs(const struct nlmsghdr *nlh, int hdrlen,
- struct nlattr **req_nlas)
+static int inet_diag_parse_attrs(const struct nlmsghdr *nlh, int hdrlen,
+ struct nlattr **req_nlas)
{
struct nlattr *nla;
int remaining;
@@ -212,9 +212,13 @@ static void inet_diag_parse_attrs(const struct nlmsghdr *nlh, int hdrlen,
nlmsg_for_each_attr(nla, nlh, hdrlen, remaining) {
int type = nla_type(nla);
+ if (type == INET_DIAG_REQ_PROTOCOL && nla_len(nla) != sizeof(u32))
+ return -EINVAL;
+
if (type < __INET_DIAG_REQ_MAX)
req_nlas[type] = nla;
}
+ return 0;
}
static int inet_diag_get_protocol(const struct inet_diag_req_v2 *req,
@@ -591,7 +595,10 @@ static int inet_diag_cmd_exact(int cmd, struct sk_buff *in_skb,
int err, protocol;
memset(&dump_data, 0, sizeof(dump_data));
- inet_diag_parse_attrs(nlh, hdrlen, dump_data.req_nlas);
+ err = inet_diag_parse_attrs(nlh, hdrlen, dump_data.req_nlas);
+ if (err)
+ return err;
+
protocol = inet_diag_get_protocol(req, &dump_data);
handler = inet_diag_lock_handler(protocol);
@@ -1197,8 +1204,11 @@ static int __inet_diag_dump_start(struct netlink_callback *cb, int hdrlen)
if (!cb_data)
return -ENOMEM;
- inet_diag_parse_attrs(nlh, hdrlen, cb_data->req_nlas);
-
+ err = inet_diag_parse_attrs(nlh, hdrlen, cb_data->req_nlas);
+ if (err) {
+ kfree(cb_data);
+ return err;
+ }
nla = cb_data->inet_diag_nla_bc;
if (nla) {
err = inet_diag_bc_audit(nla, skb);
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 5fb536ff51f0..8b200252c655 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -74,6 +74,7 @@
#include <net/icmp.h>
#include <net/checksum.h>
#include <net/inetpeer.h>
+#include <net/inet_ecn.h>
#include <net/lwtunnel.h>
#include <linux/bpf-cgroup.h>
#include <linux/igmp.h>
@@ -1704,7 +1705,7 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb,
if (IS_ERR(rt))
return;
- inet_sk(sk)->tos = arg->tos;
+ inet_sk(sk)->tos = arg->tos & ~INET_ECN_MASK;
sk->sk_protocol = ip_hdr(skb)->protocol;
sk->sk_bound_dev_if = arg->bound_dev_if;
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index 75c6013ff9a4..b2ea1a8c5fd6 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -554,6 +554,7 @@ static int ip_tun_parse_opts_vxlan(struct nlattr *attr,
attr = tb[LWTUNNEL_IP_OPT_VXLAN_GBP];
md->gbp = nla_get_u32(attr);
+ md->gbp &= VXLAN_GBP_MASK;
info->key.tun_flags |= TUNNEL_VXLAN_OPT;
}
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index bf9d4cd2d6e5..8c0f17c6863c 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -42,8 +42,8 @@ static int call_nexthop_notifiers(struct net *net,
{
int err;
- err = atomic_notifier_call_chain(&net->nexthop.notifier_chain,
- event_type, nh);
+ err = blocking_notifier_call_chain(&net->nexthop.notifier_chain,
+ event_type, nh);
return notifier_to_errno(err);
}
@@ -870,8 +870,6 @@ static void __remove_nexthop_fib(struct net *net, struct nexthop *nh)
bool do_flush = false;
struct fib_info *fi;
- call_nexthop_notifiers(net, NEXTHOP_EVENT_DEL, nh);
-
list_for_each_entry(fi, &nh->fi_list, nh_list) {
fi->fib_flags |= RTNH_F_DEAD;
do_flush = true;
@@ -909,6 +907,8 @@ static void __remove_nexthop(struct net *net, struct nexthop *nh,
static void remove_nexthop(struct net *net, struct nexthop *nh,
struct nl_info *nlinfo)
{
+ call_nexthop_notifiers(net, NEXTHOP_EVENT_DEL, nh);
+
/* remove from the tree */
rb_erase(&nh->rb_node, &net->nexthop.rb_root);
@@ -1959,14 +1959,15 @@ static struct notifier_block nh_netdev_notifier = {
int register_nexthop_notifier(struct net *net, struct notifier_block *nb)
{
- return atomic_notifier_chain_register(&net->nexthop.notifier_chain, nb);
+ return blocking_notifier_chain_register(&net->nexthop.notifier_chain,
+ nb);
}
EXPORT_SYMBOL(register_nexthop_notifier);
int unregister_nexthop_notifier(struct net *net, struct notifier_block *nb)
{
- return atomic_notifier_chain_unregister(&net->nexthop.notifier_chain,
- nb);
+ return blocking_notifier_chain_unregister(&net->nexthop.notifier_chain,
+ nb);
}
EXPORT_SYMBOL(unregister_nexthop_notifier);
@@ -1986,7 +1987,7 @@ static int __net_init nexthop_net_init(struct net *net)
net->nexthop.devhash = kzalloc(sz, GFP_KERNEL);
if (!net->nexthop.devhash)
return -ENOMEM;
- ATOMIC_INIT_NOTIFIER_HEAD(&net->nexthop.notifier_chain);
+ BLOCKING_INIT_NOTIFIER_HEAD(&net->nexthop.notifier_chain);
return 0;
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 2c05b863ae43..d15a78b26dfa 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -786,8 +786,10 @@ static void __ip_do_redirect(struct rtable *rt, struct sk_buff *skb, struct flow
neigh_event_send(n, NULL);
} else {
if (fib_lookup(net, fl4, &res, 0) == 0) {
- struct fib_nh_common *nhc = FIB_RES_NHC(res);
+ struct fib_nh_common *nhc;
+ fib_select_path(net, &res, fl4, skb);
+ nhc = FIB_RES_NHC(res);
update_or_create_fnhe(nhc, fl4->daddr, new_gw,
0, false,
jiffies + ip_rt_gc_timeout);
@@ -1013,6 +1015,7 @@ out: kfree_skb(skb);
static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
{
struct dst_entry *dst = &rt->dst;
+ struct net *net = dev_net(dst->dev);
struct fib_result res;
bool lock = false;
u32 old_mtu;
@@ -1034,9 +1037,11 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
return;
rcu_read_lock();
- if (fib_lookup(dev_net(dst->dev), fl4, &res, 0) == 0) {
- struct fib_nh_common *nhc = FIB_RES_NHC(res);
+ if (fib_lookup(net, fl4, &res, 0) == 0) {
+ struct fib_nh_common *nhc;
+ fib_select_path(net, &res, fl4, NULL);
+ nhc = FIB_RES_NHC(res);
update_or_create_fnhe(nhc, fl4->daddr, 0, mtu, lock,
jiffies + ip_rt_mtu_expires);
}
@@ -2148,6 +2153,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
fl4.daddr = daddr;
fl4.saddr = saddr;
fl4.flowi4_uid = sock_net_uid(net, NULL);
+ fl4.flowi4_multipath_hash = 0;
if (fib4_rules_early_flow_dissect(net, skb, &fl4, &_flkeys)) {
flkeys = &_flkeys;
@@ -2668,8 +2674,6 @@ struct rtable *ip_route_output_key_hash_rcu(struct net *net, struct flowi4 *fl4,
fib_select_path(net, res, fl4, skb);
dev_out = FIB_RES_DEV(*res);
- fl4->flowi4_oif = dev_out->ifindex;
-
make_route:
rth = __mkroute_output(res, fl4, orig_oif, dev_out, flags);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 57a568875539..2a8bfa89a515 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -564,7 +564,7 @@ __poll_t tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
mask |= EPOLLIN | EPOLLRDNORM;
if (!(sk->sk_shutdown & SEND_SHUTDOWN)) {
- if (sk_stream_is_writeable(sk)) {
+ if (__sk_stream_is_writeable(sk, 1)) {
mask |= EPOLLOUT | EPOLLWRNORM;
} else { /* send SIGIO later */
sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
@@ -576,7 +576,7 @@ __poll_t tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
* pairs with the input side.
*/
smp_mb__after_atomic();
- if (sk_stream_is_writeable(sk))
+ if (__sk_stream_is_writeable(sk, 1))
mask |= EPOLLOUT | EPOLLWRNORM;
}
} else
@@ -1004,12 +1004,12 @@ ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
!tcp_skb_can_collapse_to(skb)) {
new_segment:
if (!sk_stream_memory_free(sk))
- goto wait_for_sndbuf;
+ goto wait_for_space;
skb = sk_stream_alloc_skb(sk, 0, sk->sk_allocation,
tcp_rtx_and_write_queues_empty(sk));
if (!skb)
- goto wait_for_memory;
+ goto wait_for_space;
#ifdef CONFIG_TLS_DEVICE
skb->decrypted = !!(flags & MSG_SENDPAGE_DECRYPTED);
@@ -1028,7 +1028,7 @@ new_segment:
goto new_segment;
}
if (!sk_wmem_schedule(sk, copy))
- goto wait_for_memory;
+ goto wait_for_space;
if (can_coalesce) {
skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);
@@ -1069,9 +1069,8 @@ new_segment:
tcp_push_one(sk, mss_now);
continue;
-wait_for_sndbuf:
+wait_for_space:
set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
-wait_for_memory:
tcp_push(sk, flags & ~MSG_MORE, mss_now,
TCP_NAGLE_PUSH, size_goal);
@@ -1282,7 +1281,7 @@ restart:
new_segment:
if (!sk_stream_memory_free(sk))
- goto wait_for_sndbuf;
+ goto wait_for_space;
if (unlikely(process_backlog >= 16)) {
process_backlog = 0;
@@ -1293,7 +1292,7 @@ new_segment:
skb = sk_stream_alloc_skb(sk, 0, sk->sk_allocation,
first_skb);
if (!skb)
- goto wait_for_memory;
+ goto wait_for_space;
process_backlog++;
skb->ip_summed = CHECKSUM_PARTIAL;
@@ -1326,7 +1325,7 @@ new_segment:
struct page_frag *pfrag = sk_page_frag(sk);
if (!sk_page_frag_refill(sk, pfrag))
- goto wait_for_memory;
+ goto wait_for_space;
if (!skb_can_coalesce(skb, i, pfrag->page,
pfrag->offset)) {
@@ -1340,7 +1339,7 @@ new_segment:
copy = min_t(int, copy, pfrag->size - pfrag->offset);
if (!sk_wmem_schedule(sk, copy))
- goto wait_for_memory;
+ goto wait_for_space;
err = skb_copy_to_page_nocache(sk, &msg->msg_iter, skb,
pfrag->page,
@@ -1393,9 +1392,8 @@ new_segment:
tcp_push_one(sk, mss_now);
continue;
-wait_for_sndbuf:
+wait_for_space:
set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
-wait_for_memory:
if (copied)
tcp_push(sk, flags & ~MSG_MORE, mss_now,
TCP_NAGLE_PUSH, size_goal);
@@ -1527,7 +1525,7 @@ static int tcp_peek_sndq(struct sock *sk, struct msghdr *msg, int len)
* calculation of whether or not we must ACK for the sake of
* a window update.
*/
-static void tcp_cleanup_rbuf(struct sock *sk, int copied)
+void tcp_cleanup_rbuf(struct sock *sk, int copied)
{
struct tcp_sock *tp = tcp_sk(sk);
bool time_to_ack = false;
@@ -2698,6 +2696,7 @@ int tcp_disconnect(struct sock *sk, int flags)
if (icsk->icsk_ca_ops->release)
icsk->icsk_ca_ops->release(sk);
memset(icsk->icsk_ca_priv, 0, sizeof(icsk->icsk_ca_priv));
+ icsk->icsk_ca_initialized = 0;
tcp_set_ca_state(sk, TCP_CA_Open);
tp->is_sack_reneg = 0;
tcp_clear_retrans(tp);
@@ -3049,7 +3048,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level, int optname,
name[val] = 0;
lock_sock(sk);
- err = tcp_set_congestion_control(sk, name, true, true,
+ err = tcp_set_congestion_control(sk, name, true,
ns_capable(sock_net(sk)->user_ns,
CAP_NET_ADMIN));
release_sock(sk);
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 62878cf26d9c..db47ac24d057 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -176,7 +176,7 @@ void tcp_assign_congestion_control(struct sock *sk)
void tcp_init_congestion_control(struct sock *sk)
{
- const struct inet_connection_sock *icsk = inet_csk(sk);
+ struct inet_connection_sock *icsk = inet_csk(sk);
tcp_sk(sk)->prior_ssthresh = 0;
if (icsk->icsk_ca_ops->init)
@@ -185,6 +185,7 @@ void tcp_init_congestion_control(struct sock *sk)
INET_ECN_xmit(sk);
else
INET_ECN_dontxmit(sk);
+ icsk->icsk_ca_initialized = 1;
}
static void tcp_reinit_congestion_control(struct sock *sk,
@@ -340,7 +341,7 @@ out:
* already initialized.
*/
int tcp_set_congestion_control(struct sock *sk, const char *name, bool load,
- bool reinit, bool cap_net_admin)
+ bool cap_net_admin)
{
struct inet_connection_sock *icsk = inet_csk(sk);
const struct tcp_congestion_ops *ca;
@@ -361,28 +362,14 @@ int tcp_set_congestion_control(struct sock *sk, const char *name, bool load,
goto out;
}
- if (!ca) {
+ if (!ca)
err = -ENOENT;
- } else if (!load) {
- const struct tcp_congestion_ops *old_ca = icsk->icsk_ca_ops;
-
- if (bpf_try_module_get(ca, ca->owner)) {
- if (reinit) {
- tcp_reinit_congestion_control(sk, ca);
- } else {
- icsk->icsk_ca_ops = ca;
- bpf_module_put(old_ca, old_ca->owner);
- }
- } else {
- err = -EBUSY;
- }
- } else if (!((ca->flags & TCP_CONG_NON_RESTRICTED) || cap_net_admin)) {
+ else if (!((ca->flags & TCP_CONG_NON_RESTRICTED) || cap_net_admin))
err = -EPERM;
- } else if (!bpf_try_module_get(ca, ca->owner)) {
+ else if (!bpf_try_module_get(ca, ca->owner))
err = -EBUSY;
- } else {
+ else
tcp_reinit_congestion_control(sk, ca);
- }
out:
rcu_read_unlock();
return err;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 3658ad84f0c6..748980862a09 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4908,7 +4908,7 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
int eaten;
if (sk_is_mptcp(sk))
- mptcp_incoming_options(sk, skb, &tp->rx_opt);
+ mptcp_incoming_options(sk, skb);
if (TCP_SKB_CB(skb)->seq == TCP_SKB_CB(skb)->end_seq) {
__kfree_skb(skb);
@@ -5332,12 +5332,6 @@ static bool tcp_should_expand_sndbuf(const struct sock *sk)
return true;
}
-/* When incoming ACK allowed to free some skb from write_queue,
- * we remember this event in flag SOCK_QUEUE_SHRUNK and wake up socket
- * on the exit from tcp input handler.
- *
- * PROBLEM: sndbuf expansion does not work well with largesend.
- */
static void tcp_new_space(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
@@ -5352,16 +5346,13 @@ static void tcp_new_space(struct sock *sk)
static void tcp_check_space(struct sock *sk)
{
- if (sock_flag(sk, SOCK_QUEUE_SHRUNK)) {
- sock_reset_flag(sk, SOCK_QUEUE_SHRUNK);
- /* pairs with tcp_poll() */
- smp_mb();
- if (sk->sk_socket &&
- test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
- tcp_new_space(sk);
- if (!test_bit(SOCK_NOSPACE, &sk->sk_socket->flags))
- tcp_chrono_stop(sk, TCP_CHRONO_SNDBUF_LIMITED);
- }
+ /* pairs with tcp_poll() */
+ smp_mb();
+ if (sk->sk_socket &&
+ test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
+ tcp_new_space(sk);
+ if (!test_bit(SOCK_NOSPACE, &sk->sk_socket->flags))
+ tcp_chrono_stop(sk, TCP_CHRONO_SNDBUF_LIMITED);
}
}
@@ -5894,8 +5885,10 @@ void tcp_init_transfer(struct sock *sk, int bpf_op, struct sk_buff *skb)
tp->snd_cwnd = tcp_init_cwnd(tp, __sk_dst_get(sk));
tp->snd_cwnd_stamp = tcp_jiffies32;
+ icsk->icsk_ca_initialized = 0;
bpf_skops_established(sk, bpf_op, skb);
- tcp_init_congestion_control(sk);
+ if (!icsk->icsk_ca_initialized)
+ tcp_init_congestion_control(sk);
tcp_init_buffer_space(sk);
}
@@ -6496,7 +6489,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb)
case TCP_LAST_ACK:
if (!before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) {
if (sk_is_mptcp(sk))
- mptcp_incoming_options(sk, skb, &tp->rx_opt);
+ mptcp_incoming_options(sk, skb);
break;
}
fallthrough;
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index ab79d36ed07f..386978dcd318 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1682,7 +1682,6 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
skb->truesize -= delta_truesize;
sk_wmem_queued_add(sk, -delta_truesize);
sk_mem_uncharge(sk, delta_truesize);
- sock_set_flag(sk, SOCK_QUEUE_SHRUNK);
}
/* Any change of skb->len requires recalculation of tso factor. */
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