diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 22 | ||||
| -rw-r--r-- | net/ipv6/datagram.c | 21 |
2 files changed, 39 insertions, 4 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 59eba6c7a512..640f26c6a9fe 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -399,6 +399,22 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf kfree_skb(skb); } +static bool ipv4_pktinfo_prepare_errqueue(const struct sock *sk, + const struct sk_buff *skb, + int ee_origin) +{ + struct in_pktinfo *info = PKTINFO_SKB_CB(skb); + + if ((ee_origin != SO_EE_ORIGIN_TIMESTAMPING) || + (!(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_CMSG)) || + (!skb->dev)) + return false; + + info->ipi_spec_dst.s_addr = ip_hdr(skb)->saddr; + info->ipi_ifindex = skb->dev->ifindex; + return true; +} + /* * Handle MSG_ERRQUEUE */ @@ -446,7 +462,9 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err)); sin = &errhdr.offender; sin->sin_family = AF_UNSPEC; - if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP) { + + if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || + ipv4_pktinfo_prepare_errqueue(sk, skb, serr->ee.ee_origin)) { struct inet_sock *inet = inet_sk(sk); sin->sin_family = AF_INET; @@ -1051,7 +1069,7 @@ e_inval: } /** - * ipv4_pktinfo_prepare - transfert some info from rtable to skb + * ipv4_pktinfo_prepare - transfer some info from rtable to skb * @sk: socket * @skb: buffer * diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index cc1139687fd7..2464a00e36ab 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -325,6 +325,16 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu) kfree_skb(skb); } +static void ip6_datagram_prepare_pktinfo_errqueue(struct sk_buff *skb) +{ + int ifindex = skb->dev ? skb->dev->ifindex : -1; + + if (skb->protocol == htons(ETH_P_IPV6)) + IP6CB(skb)->iif = ifindex; + else + PKTINFO_SKB_CB(skb)->ipi_ifindex = ifindex; +} + /* * Handle MSG_ERRQUEUE */ @@ -388,8 +398,12 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) sin->sin6_family = AF_INET6; sin->sin6_flowinfo = 0; sin->sin6_port = 0; - if (np->rxopt.all) + if (np->rxopt.all) { + if (serr->ee.ee_origin != SO_EE_ORIGIN_ICMP && + serr->ee.ee_origin != SO_EE_ORIGIN_ICMP6) + ip6_datagram_prepare_pktinfo_errqueue(skb); ip6_datagram_recv_common_ctl(sk, msg, skb); + } if (skb->protocol == htons(ETH_P_IPV6)) { sin->sin6_addr = ipv6_hdr(skb)->saddr; if (np->rxopt.all) @@ -491,7 +505,10 @@ void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, &src_info.ipi6_addr); } - put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info); + + if (src_info.ipi6_ifindex >= 0) + put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, + sizeof(src_info), &src_info); } } |