diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 9 | ||||
| -rw-r--r-- | net/core/gro.c | 8 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 16 | ||||
| -rw-r--r-- | net/core/sock.c | 14 |
4 files changed, 34 insertions, 13 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index a601da3b4a7c..d93456c75b55 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); } @@ -10595,9 +10596,9 @@ 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->gro_max_size = GRO_LEGACY_MAX_SIZE; dev->tso_max_size = TSO_LEGACY_MAX_SIZE; dev->tso_max_segs = TSO_MAX_SEGS; dev->upper_level = 1; diff --git a/net/core/gro.c b/net/core/gro.c index 78110edf5d4b..b4190eb08467 100644 --- a/net/core/gro.c +++ b/net/core/gro.c @@ -167,6 +167,14 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb) if (unlikely(p->len + len >= gro_max_size || NAPI_GRO_CB(skb)->flush)) return -E2BIG; + if (unlikely(p->len + len >= GRO_LEGACY_MAX_SIZE)) { + if (p->protocol != htons(ETH_P_IPV6) || + skb_headroom(p) < sizeof(struct hop_jumbo_hdr) || + ipv6_hdr(p)->nexthdr != IPPROTO_TCP || + p->encapsulation) + return -E2BIG; + } + lp = NAPI_GRO_CB(p)->last; pinfo = skb_shinfo(lp); diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index bdc891326102..ac45328607f7 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1064,6 +1064,8 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ + nla_total_size(4) /* IFLA_GRO_MAX_SIZE */ + + nla_total_size(4) /* IFLA_TSO_MAX_SIZE */ + + nla_total_size(4) /* IFLA_TSO_MAX_SEGS */ + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(1) /* IFLA_LINKMODE */ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ @@ -1769,6 +1771,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || nla_put_u32(skb, IFLA_GRO_MAX_SIZE, dev->gro_max_size) || + nla_put_u32(skb, IFLA_TSO_MAX_SIZE, dev->tso_max_size) || + nla_put_u32(skb, IFLA_TSO_MAX_SEGS, dev->tso_max_segs) || #ifdef CONFIG_RPS nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || #endif @@ -1922,6 +1926,8 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = { [IFLA_NEW_IFINDEX] = NLA_POLICY_MIN(NLA_S32, 1), [IFLA_PARENT_DEV_NAME] = { .type = NLA_NUL_STRING }, [IFLA_GRO_MAX_SIZE] = { .type = NLA_U32 }, + [IFLA_TSO_MAX_SIZE] = { .type = NLA_REJECT }, + [IFLA_TSO_MAX_SEGS] = { .type = NLA_REJECT }, }; static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { @@ -2354,14 +2360,6 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[], } } - if (tb[IFLA_GRO_MAX_SIZE]) { - u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_MAX_SIZE]); - - if (gro_max_size > GRO_MAX_SIZE) { - NL_SET_ERR_MSG(extack, "too big gro_max_size"); - return -EINVAL; - } - } return 0; } @@ -2811,7 +2809,7 @@ 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); |