diff options
Diffstat (limited to 'kernel/net/ipv4')
| -rw-r--r-- | kernel/net/ipv4/datagram.c | 16 | ||||
| -rw-r--r-- | kernel/net/ipv4/fib_trie.c | 6 | ||||
| -rw-r--r-- | kernel/net/ipv4/inet_connection_sock.c | 2 | ||||
| -rw-r--r-- | kernel/net/ipv4/ip_fragment.c | 7 | ||||
| -rw-r--r-- | kernel/net/ipv4/ip_tunnel.c | 8 | ||||
| -rw-r--r-- | kernel/net/ipv4/tcp_ipv4.c | 2 | ||||
| -rw-r--r-- | kernel/net/ipv4/tcp_output.c | 1 | ||||
| -rw-r--r-- | kernel/net/ipv4/udp.c | 13 |
8 files changed, 36 insertions, 19 deletions
diff --git a/kernel/net/ipv4/datagram.c b/kernel/net/ipv4/datagram.c index 90c0e8386..574fad9cc 100644 --- a/kernel/net/ipv4/datagram.c +++ b/kernel/net/ipv4/datagram.c @@ -20,7 +20,7 @@ #include <net/route.h> #include <net/tcp_states.h> -int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) +int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) { struct inet_sock *inet = inet_sk(sk); struct sockaddr_in *usin = (struct sockaddr_in *) uaddr; @@ -39,8 +39,6 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) sk_dst_reset(sk); - lock_sock(sk); - oif = sk->sk_bound_dev_if; saddr = inet->inet_saddr; if (ipv4_is_multicast(usin->sin_addr.s_addr)) { @@ -82,9 +80,19 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) sk_dst_set(sk, &rt->dst); err = 0; out: - release_sock(sk); return err; } +EXPORT_SYMBOL(__ip4_datagram_connect); + +int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) +{ + int res; + + lock_sock(sk); + res = __ip4_datagram_connect(sk, uaddr, addr_len); + release_sock(sk); + return res; +} EXPORT_SYMBOL(ip4_datagram_connect); /* Because UDP xmit path can manipulate sk_dst_cache without holding diff --git a/kernel/net/ipv4/fib_trie.c b/kernel/net/ipv4/fib_trie.c index 09b62e17d..0ca933db1 100644 --- a/kernel/net/ipv4/fib_trie.c +++ b/kernel/net/ipv4/fib_trie.c @@ -1780,8 +1780,6 @@ void fib_table_flush_external(struct fib_table *tb) if (hlist_empty(&n->leaf)) { put_child_root(pn, n->key, NULL); node_free(n); - } else { - leaf_pull_suffix(pn, n); } } } @@ -1852,8 +1850,6 @@ int fib_table_flush(struct fib_table *tb) if (hlist_empty(&n->leaf)) { put_child_root(pn, n->key, NULL); node_free(n); - } else { - leaf_pull_suffix(pn, n); } } @@ -2457,7 +2453,7 @@ static struct key_vector *fib_route_get_idx(struct fib_route_iter *iter, key = l->key + 1; iter->pos++; - if (pos-- <= 0) + if (--pos <= 0) break; l = NULL; diff --git a/kernel/net/ipv4/inet_connection_sock.c b/kernel/net/ipv4/inet_connection_sock.c index 8976ca423..b27fc401c 100644 --- a/kernel/net/ipv4/inet_connection_sock.c +++ b/kernel/net/ipv4/inet_connection_sock.c @@ -584,7 +584,7 @@ static bool reqsk_queue_unlink(struct request_sock_queue *queue, } spin_unlock(&queue->syn_wait_lock); - if (del_timer(&req->rsk_timer)) + if (del_timer_sync(&req->rsk_timer)) reqsk_put(req); return found; } diff --git a/kernel/net/ipv4/ip_fragment.c b/kernel/net/ipv4/ip_fragment.c index cc1da6d9c..cae22a1a8 100644 --- a/kernel/net/ipv4/ip_fragment.c +++ b/kernel/net/ipv4/ip_fragment.c @@ -342,7 +342,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb) ihl = ip_hdrlen(skb); /* Determine the position of this fragment. */ - end = offset + skb->len - ihl; + end = offset + skb->len - skb_network_offset(skb) - ihl; err = -EINVAL; /* Is this the final fragment? */ @@ -372,7 +372,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb) goto err; err = -ENOMEM; - if (!pskb_pull(skb, ihl)) + if (!pskb_pull(skb, skb_network_offset(skb) + ihl)) goto err; err = pskb_trim_rcsum(skb, end - offset); @@ -613,6 +613,9 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev, iph->frag_off = qp->q.max_size ? htons(IP_DF) : 0; iph->tot_len = htons(len); iph->tos |= ecn; + + ip_send_check(iph); + IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS); qp->q.fragments = NULL; qp->q.fragments_tail = NULL; diff --git a/kernel/net/ipv4/ip_tunnel.c b/kernel/net/ipv4/ip_tunnel.c index 4c2c3ba4b..626d9e56a 100644 --- a/kernel/net/ipv4/ip_tunnel.c +++ b/kernel/net/ipv4/ip_tunnel.c @@ -586,7 +586,8 @@ int ip_tunnel_encap(struct sk_buff *skb, struct ip_tunnel *t, EXPORT_SYMBOL(ip_tunnel_encap); static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb, - struct rtable *rt, __be16 df) + struct rtable *rt, __be16 df, + const struct iphdr *inner_iph) { struct ip_tunnel *tunnel = netdev_priv(dev); int pkt_size = skb->len - tunnel->hlen - dev->hard_header_len; @@ -603,7 +604,8 @@ static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb, if (skb->protocol == htons(ETH_P_IP)) { if (!skb_is_gso(skb) && - (df & htons(IP_DF)) && mtu < pkt_size) { + (inner_iph->frag_off & htons(IP_DF)) && + mtu < pkt_size) { memset(IPCB(skb), 0, sizeof(*IPCB(skb))); icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); return -E2BIG; @@ -737,7 +739,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, goto tx_error; } - if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off)) { + if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off, inner_iph)) { ip_rt_put(rt); goto tx_error; } diff --git a/kernel/net/ipv4/tcp_ipv4.c b/kernel/net/ipv4/tcp_ipv4.c index fc1c658ec..441ca6f38 100644 --- a/kernel/net/ipv4/tcp_ipv4.c +++ b/kernel/net/ipv4/tcp_ipv4.c @@ -1348,7 +1348,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb) req = inet_csk_search_req(sk, th->source, iph->saddr, iph->daddr); if (req) { nsk = tcp_check_req(sk, skb, req, false); - if (!nsk) + if (!nsk || nsk == sk) reqsk_put(req); return nsk; } diff --git a/kernel/net/ipv4/tcp_output.c b/kernel/net/ipv4/tcp_output.c index a369e8a70..986440b24 100644 --- a/kernel/net/ipv4/tcp_output.c +++ b/kernel/net/ipv4/tcp_output.c @@ -2893,6 +2893,7 @@ void tcp_send_active_reset(struct sock *sk, gfp_t priority) skb_reserve(skb, MAX_TCP_HEADER); tcp_init_nondata_skb(skb, tcp_acceptable_seq(sk), TCPHDR_ACK | TCPHDR_RST); + skb_mstamp_get(&skb->skb_mstamp); /* Send it off. */ if (tcp_transmit_skb(sk, skb, 0, priority)) NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPABORTFAILED); diff --git a/kernel/net/ipv4/udp.c b/kernel/net/ipv4/udp.c index 83aa604f9..1b8c5ba7d 100644 --- a/kernel/net/ipv4/udp.c +++ b/kernel/net/ipv4/udp.c @@ -1995,12 +1995,19 @@ void udp_v4_early_demux(struct sk_buff *skb) skb->sk = sk; skb->destructor = sock_efree; - dst = sk->sk_rx_dst; + dst = READ_ONCE(sk->sk_rx_dst); if (dst) dst = dst_check(dst, 0); - if (dst) - skb_dst_set_noref(skb, dst); + if (dst) { + /* DST_NOCACHE can not be used without taking a reference */ + if (dst->flags & DST_NOCACHE) { + if (likely(atomic_inc_not_zero(&dst->__refcnt))) + skb_dst_set(skb, dst); + } else { + skb_dst_set_noref(skb, dst); + } + } } int udp_rcv(struct sk_buff *skb) |