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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-18 02:04:05 +08:00

rxrpc: Fix error reception on AF_INET6 sockets

AF_RXRPC tries to turn on IP_RECVERR and IP_MTU_DISCOVER on the UDP socket
it just opened for communications with the outside world, regardless of the
type of socket.  Unfortunately, this doesn't work with an AF_INET6 socket.

Fix this by turning on IPV6_RECVERR and IPV6_MTU_DISCOVER instead if the
socket is of the AF_INET6 family.

Without this, kAFS server and address rotation doesn't work correctly
because the algorithm doesn't detect received network errors.

Fixes: 75b54cb57c ("rxrpc: Add IPv6 support")
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2018-05-10 23:26:00 +01:00
parent c54e43d752
commit f2aeed3a59

View File

@ -134,6 +134,8 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
}
}
switch (local->srx.transport.family) {
case AF_INET:
/* we want to receive ICMP errors */
opt = 1;
ret = kernel_setsockopt(local->socket, SOL_IP, IP_RECVERR,
@ -151,6 +153,31 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
_debug("setsockopt failed");
goto error;
}
break;
case AF_INET6:
/* we want to receive ICMP errors */
opt = 1;
ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_RECVERR,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
goto error;
}
/* we want to set the don't fragment bit */
opt = IPV6_PMTUDISC_DO;
ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_MTU_DISCOVER,
(char *) &opt, sizeof(opt));
if (ret < 0) {
_debug("setsockopt failed");
goto error;
}
break;
default:
BUG();
}
/* set the socket up */
sock = local->socket->sk;