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| author |   Eric Dumazet <edumazet@google.com> | 2020-05-27 17:34:58 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-28 11:02:46 -0700 |
| commit | d29245692a44d71d5e2e0770463184a693696232 (patch) | |
| tree | efe215dec4d12a186e173b33011b3af319c3fb66 /net/ipv4/tcp_ipv4.c | |
| parent | net: dsa: sja1105: offload the Credit-Based Shaper qdisc (diff) | |
| download | wireguard-linux-d29245692a44d71d5e2e0770463184a693696232.tar.xz wireguard-linux-d29245692a44d71d5e2e0770463184a693696232.zip | |
tcp: ipv6: support RFC 6069 (TCP-LD)
Make tcp_ld_RTO_revert() helper available to IPv6, and
implement RFC 6069 :
Quoting this RFC :
3. Connectivity Disruption Indication
For Internet Protocol version 6 (IPv6) [RFC2460], the counterpart of
the ICMP destination unreachable message of code 0 (net unreachable)
and of code 1 (host unreachable) is the ICMPv6 destination
unreachable message of code 0 (no route to destination) [RFC4443].
As with IPv4, a router should generate an ICMPv6 destination
unreachable message of code 0 in response to a packet that cannot be
delivered to its destination address because it lacks a matching
entry in its routing table.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 4eef5b84fff1..ad6435ba6d72 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -404,7 +404,7 @@ void tcp_req_err(struct sock *sk, u32 seq, bool abort) EXPORT_SYMBOL(tcp_req_err); /* TCP-LD (RFC 6069) logic */ -static void tcp_ld_RTO_revert(struct sock *sk, u32 seq) +void tcp_ld_RTO_revert(struct sock *sk, u32 seq) { struct inet_connection_sock *icsk = inet_csk(sk); struct tcp_sock *tp = tcp_sk(sk); @@ -441,6 +441,7 @@ static void tcp_ld_RTO_revert(struct sock *sk, u32 seq) tcp_retransmit_timer(sk); } } +EXPORT_SYMBOL(tcp_ld_RTO_revert); /* * This routine is called by the ICMP module when it gets some |