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authorDavid Howells <dhowells@redhat.com>2018-10-04 11:32:28 +0300
committerDavid Howells <dhowells@redhat.com>2018-10-04 11:32:28 +0300
commit46894a13599a977ac35411b536fb3e0b2feefa95 (patch)
tree7900ce31700b2b9c23528fd844f65c10c6010bb6 /fs/afs
parent66be646bd9a7d50961afbf48c1d0df148e37d416 (diff)
downloadlinux-46894a13599a977ac35411b536fb3e0b2feefa95.tar.xz
rxrpc: Use IPv4 addresses throught the IPv6
AF_RXRPC opens an IPv6 socket through which to send and receive network packets, both IPv6 and IPv4. It currently turns AF_INET addresses into AF_INET-as-AF_INET6 addresses based on an assumption that this was necessary; on further inspection of the code, however, it turns out that the IPv6 code just farms packets aimed at AF_INET addresses out to the IPv4 code. Fix AF_RXRPC to use AF_INET addresses directly when given them. Fixes: 7b674e390e51 ("rxrpc: Fix IPv6 support") Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs')
-rw-r--r--fs/afs/addr_list.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c
index 89374de4785c..55a756c60746 100644
--- a/fs/afs/addr_list.c
+++ b/fs/afs/addr_list.c
@@ -232,7 +232,7 @@ struct afs_addr_list *afs_dns_query(struct afs_cell *cell, time64_t *_expiry)
*/
void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr, u16 port)
{
- struct sockaddr_in6 *p;
+ struct sockaddr_rxrpc *srx;
u32 addr = ntohl(xdr);
int i;
@@ -240,9 +240,9 @@ void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr, u16 port)
return;
for (i = 0; i < alist->nr_ipv4; i++) {
- struct sockaddr_in6 *a = &alist->addrs[i].transport.sin6;
- u32 a_addr = ntohl(a->sin6_addr.s6_addr32[3]);
- u16 a_port = ntohs(a->sin6_port);
+ struct sockaddr_in *a = &alist->addrs[i].transport.sin;
+ u32 a_addr = ntohl(a->sin_addr.s_addr);
+ u16 a_port = ntohs(a->sin_port);
if (addr == a_addr && port == a_port)
return;
@@ -257,12 +257,11 @@ void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr, u16 port)
alist->addrs + i,
sizeof(alist->addrs[0]) * (alist->nr_addrs - i));
- p = &alist->addrs[i].transport.sin6;
- p->sin6_port = htons(port);
- p->sin6_addr.s6_addr32[0] = 0;
- p->sin6_addr.s6_addr32[1] = 0;
- p->sin6_addr.s6_addr32[2] = htonl(0xffff);
- p->sin6_addr.s6_addr32[3] = xdr;
+ srx = &alist->addrs[i];
+ srx->transport_len = sizeof(srx->transport.sin);
+ srx->transport.sin.sin_family = AF_INET;
+ srx->transport.sin.sin_port = htons(port);
+ srx->transport.sin.sin_addr.s_addr = xdr;
alist->nr_ipv4++;
alist->nr_addrs++;
}
@@ -272,7 +271,7 @@ void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr, u16 port)
*/
void afs_merge_fs_addr6(struct afs_addr_list *alist, __be32 *xdr, u16 port)
{
- struct sockaddr_in6 *p;
+ struct sockaddr_rxrpc *srx;
int i, diff;
if (alist->nr_addrs >= alist->max_addrs)
@@ -296,9 +295,11 @@ void afs_merge_fs_addr6(struct afs_addr_list *alist, __be32 *xdr, u16 port)
alist->addrs + i,
sizeof(alist->addrs[0]) * (alist->nr_addrs - i));
- p = &alist->addrs[i].transport.sin6;
- p->sin6_port = htons(port);
- memcpy(&p->sin6_addr, xdr, 16);
+ srx = &alist->addrs[i];
+ srx->transport_len = sizeof(srx->transport.sin6);
+ srx->transport.sin6.sin6_family = AF_INET6;
+ srx->transport.sin6.sin6_port = htons(port);
+ memcpy(&srx->transport.sin6.sin6_addr, xdr, 16);
alist->nr_addrs++;
}