diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/bpf/test_run.c | 2 | ||||
| -rw-r--r-- | net/core/dev.c | 7 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 2 | ||||
| -rw-r--r-- | net/core/sock.c | 14 | ||||
| -rw-r--r-- | net/ipv4/tcp_bbr.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_output.c | 2 | ||||
| -rw-r--r-- | net/sctp/output.c | 3 |
7 files changed, 24 insertions, 8 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 8d54fef9a568..9b5a1f630bb0 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -1001,7 +1001,7 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb) cb->pkt_len = skb->len; } else { if (__skb->wire_len < skb->len || - __skb->wire_len > GSO_MAX_SIZE) + __skb->wire_len > GSO_LEGACY_MAX_SIZE) return -EINVAL; cb->pkt_len = __skb->wire_len; } diff --git a/net/core/dev.c b/net/core/dev.c index a601da3b4a7c..830beb05161a 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2998,11 +2998,12 @@ EXPORT_SYMBOL(netif_set_real_num_queues); * @size: max skb->len of a TSO frame * * Set the limit on the size of TSO super-frames the device can handle. - * Unless explicitly set the stack will assume the value of %GSO_MAX_SIZE. + * Unless explicitly set the stack will assume the value of + * %GSO_LEGACY_MAX_SIZE. */ void netif_set_tso_max_size(struct net_device *dev, unsigned int size) { - dev->tso_max_size = size; + dev->tso_max_size = min(GSO_MAX_SIZE, size); if (size < READ_ONCE(dev->gso_max_size)) netif_set_gso_max_size(dev, size); } @@ -10595,7 +10596,7 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, dev_net_set(dev, &init_net); - dev->gso_max_size = GSO_MAX_SIZE; + dev->gso_max_size = GSO_LEGACY_MAX_SIZE; dev->gso_max_segs = GSO_MAX_SEGS; dev->gro_max_size = GRO_MAX_SIZE; dev->tso_max_size = TSO_LEGACY_MAX_SIZE; diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index f35cc21298ac..f2b0f747d3d2 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -2817,7 +2817,7 @@ static int do_setlink(const struct sk_buff *skb, if (tb[IFLA_GSO_MAX_SIZE]) { u32 max_size = nla_get_u32(tb[IFLA_GSO_MAX_SIZE]); - if (max_size > GSO_MAX_SIZE || max_size > dev->tso_max_size) { + if (max_size > dev->tso_max_size) { err = -EINVAL; goto errout; } diff --git a/net/core/sock.c b/net/core/sock.c index 6b287eb5427b..24a46a1e4f28 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2293,6 +2293,19 @@ void sk_free_unlock_clone(struct sock *sk) } EXPORT_SYMBOL_GPL(sk_free_unlock_clone); +static void sk_trim_gso_size(struct sock *sk) +{ + if (sk->sk_gso_max_size <= GSO_LEGACY_MAX_SIZE) + return; +#if IS_ENABLED(CONFIG_IPV6) + if (sk->sk_family == AF_INET6 && + sk_is_tcp(sk) && + !ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr)) + return; +#endif + sk->sk_gso_max_size = GSO_LEGACY_MAX_SIZE; +} + void sk_setup_caps(struct sock *sk, struct dst_entry *dst) { u32 max_segs = 1; @@ -2312,6 +2325,7 @@ void sk_setup_caps(struct sock *sk, struct dst_entry *dst) sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM; /* pairs with the WRITE_ONCE() in netif_set_gso_max_size() */ sk->sk_gso_max_size = READ_ONCE(dst->dev->gso_max_size); + sk_trim_gso_size(sk); sk->sk_gso_max_size -= (MAX_TCP_HEADER + 1); /* pairs with the WRITE_ONCE() in netif_set_gso_max_segs() */ max_segs = max_t(u32, READ_ONCE(dst->dev->gso_max_segs), 1); diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c index c7d30a3bbd81..075e744bfb48 100644 --- a/net/ipv4/tcp_bbr.c +++ b/net/ipv4/tcp_bbr.c @@ -310,7 +310,7 @@ static u32 bbr_tso_segs_goal(struct sock *sk) */ bytes = min_t(unsigned long, sk->sk_pacing_rate >> READ_ONCE(sk->sk_pacing_shift), - GSO_MAX_SIZE - 1 - MAX_TCP_HEADER); + GSO_LEGACY_MAX_SIZE - 1 - MAX_TCP_HEADER); segs = max_t(u32, bytes / tp->mss_cache, bbr_min_tso_segs(sk)); return min(segs, 0x7FU); diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index b092228e4342..b4b2284ed4a2 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1553,7 +1553,7 @@ int tcp_fragment(struct sock *sk, enum tcp_queue tcp_queue, * SO_SNDBUF values. * Also allow first and last skb in retransmit queue to be split. */ - limit = sk->sk_sndbuf + 2 * SKB_TRUESIZE(GSO_MAX_SIZE); + limit = sk->sk_sndbuf + 2 * SKB_TRUESIZE(GSO_LEGACY_MAX_SIZE); if (unlikely((sk->sk_wmem_queued >> 1) > limit && tcp_queue != TCP_FRAG_IN_WRITE_QUEUE && skb != tcp_rtx_queue_head(sk) && diff --git a/net/sctp/output.c b/net/sctp/output.c index 72fe6669c50d..a63df055ac57 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -134,7 +134,8 @@ void sctp_packet_config(struct sctp_packet *packet, __u32 vtag, dst_hold(tp->dst); sk_setup_caps(sk, tp->dst); } - packet->max_size = sk_can_gso(sk) ? READ_ONCE(tp->dst->dev->gso_max_size) + packet->max_size = sk_can_gso(sk) ? min(READ_ONCE(tp->dst->dev->gso_max_size), + GSO_LEGACY_MAX_SIZE) : asoc->pathmtu; rcu_read_unlock(); } |