diff options
Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r-- | drivers/net/vxlan.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 0851af6733f3..c3e65e78f015 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2278,13 +2278,24 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, goto tx_error; } - /* Bypass encapsulation if the destination is local */ if (!info) { + /* Bypass encapsulation if the destination is local */ err = encap_bypass_if_local(skb, dev, vxlan, dst, dst_port, ifindex, vni, &rt->dst, rt->rt_flags); if (err) goto out_unlock; + + if (vxlan->cfg.df == VXLAN_DF_SET) { + df = htons(IP_DF); + } else if (vxlan->cfg.df == VXLAN_DF_INHERIT) { + struct ethhdr *eth = eth_hdr(skb); + + if (ntohs(eth->h_proto) == ETH_P_IPV6 || + (ntohs(eth->h_proto) == ETH_P_IP && + old_iph->frag_off & htons(IP_DF))) + df = htons(IP_DF); + } } else if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT) { df = htons(IP_DF); } @@ -2837,6 +2848,7 @@ static const struct nla_policy vxlan_policy[IFLA_VXLAN_MAX + 1] = { [IFLA_VXLAN_GPE] = { .type = NLA_FLAG, }, [IFLA_VXLAN_REMCSUM_NOPARTIAL] = { .type = NLA_FLAG }, [IFLA_VXLAN_TTL_INHERIT] = { .type = NLA_FLAG }, + [IFLA_VXLAN_DF] = { .type = NLA_U8 }, }; static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[], @@ -2893,6 +2905,16 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[], } } + if (data[IFLA_VXLAN_DF]) { + enum ifla_vxlan_df df = nla_get_u8(data[IFLA_VXLAN_DF]); + + if (df < 0 || df > VXLAN_DF_MAX) { + NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_DF], + "Invalid DF attribute"); + return -EINVAL; + } + } + return 0; } @@ -3538,6 +3560,9 @@ static int vxlan_nl2conf(struct nlattr *tb[], struct nlattr *data[], conf->mtu = nla_get_u32(tb[IFLA_MTU]); } + if (data[IFLA_VXLAN_DF]) + conf->df = nla_get_u8(data[IFLA_VXLAN_DF]); + return 0; } @@ -3630,6 +3655,7 @@ static size_t vxlan_get_size(const struct net_device *dev) nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_TTL */ nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_TTL_INHERIT */ nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_TOS */ + nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_DF */ nla_total_size(sizeof(__be32)) + /* IFLA_VXLAN_LABEL */ nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_LEARNING */ nla_total_size(sizeof(__u8)) + /* IFLA_VXLAN_PROXY */ @@ -3696,6 +3722,7 @@ static int vxlan_fill_info(struct sk_buff *skb, const struct net_device *dev) nla_put_u8(skb, IFLA_VXLAN_TTL_INHERIT, !!(vxlan->cfg.flags & VXLAN_F_TTL_INHERIT)) || nla_put_u8(skb, IFLA_VXLAN_TOS, vxlan->cfg.tos) || + nla_put_u8(skb, IFLA_VXLAN_DF, vxlan->cfg.df) || nla_put_be32(skb, IFLA_VXLAN_LABEL, vxlan->cfg.label) || nla_put_u8(skb, IFLA_VXLAN_LEARNING, !!(vxlan->cfg.flags & VXLAN_F_LEARN)) || |