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rxrpc: Provide a way for AFS to ask for the peer address of a call

Kaynağa Gözat 
Provide a function so that kernel users, such as AFS, can ask for the peer
address of a call:

   void rxrpc_kernel_get_peer(struct rxrpc_call *call,
			      struct sockaddr_rxrpc *_srx);

In the future the kernel service won't get sk_buffs to look inside.
Further, this allows us to hide any canonicalisation inside AF_RXRPC for
when IPv6 support is added.

Also propagate this through to afs_find_server() and issue a warning if we
can't handle the address family yet.

Signed-off-by: David Howells <dhowells@redhat.com>
Bu işleme şunda yer alıyor:
David Howells
2016-08-30 09:49:29 +01:00
ebeveyn e0661dfc59
işleme 8324f0bcfb
7 değiştirilmiş dosya ile 48 ekleme ve 14 silme
Yama Dosyasını İndir Diff Dosyasını İndir Tüm dosyaları genişlet Tüm dosyaları daralt

20
fs/afs/cmservice.c
Dosyayı Görüntüle

@@ -167,9 +167,9 @@ static void SRXAFSCB_CallBack(struct work_struct *work)
static int afs_deliver_cb_callback(struct afs_call *call, struct sk_buff *skb,
bool last)
{
struct sockaddr_rxrpc srx;
struct afs_callback *cb;
struct afs_server *server;
struct in_addr addr;
__be32 *bp;
u32 tmp;
int ret, loop;
@@ -178,6 +178,7 @@ static int afs_deliver_cb_callback(struct afs_call *call, struct sk_buff *skb,
switch (call->unmarshall) {
case 0:
rxrpc_kernel_get_peer(afs_socket, call->rxcall, &srx);
call->offset = 0;
call->unmarshall++;
@@ -282,8 +283,7 @@ static int afs_deliver_cb_callback(struct afs_call *call, struct sk_buff *skb,
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
memcpy(&addr, &ip_hdr(skb)->saddr, 4);
server = afs_find_server(&addr);
server = afs_find_server(&srx);
if (!server)
return -ENOTCONN;
call->server = server;
@@ -314,12 +314,14 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call,
struct sk_buff *skb,
bool last)
{
struct sockaddr_rxrpc srx;
struct afs_server *server;
struct in_addr addr;
int ret;
_enter(",{%u},%d", skb->len, last);
rxrpc_kernel_get_peer(afs_socket, call->rxcall, &srx);
ret = afs_data_complete(call, skb, last);
if (ret < 0)
return ret;
@@ -329,8 +331,7 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call,
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
memcpy(&addr, &ip_hdr(skb)->saddr, 4);
server = afs_find_server(&addr);
server = afs_find_server(&srx);
if (!server)
return -ENOTCONN;
call->server = server;
@@ -347,11 +348,13 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call,
struct sk_buff *skb,
bool last)
{
struct sockaddr_rxrpc srx;
struct afs_server *server;
struct in_addr addr;
_enter(",{%u},%d", skb->len, last);
rxrpc_kernel_get_peer(afs_socket, call->rxcall, &srx);
/* There are some arguments that we ignore */
afs_data_consumed(call, skb);
if (!last)
@@ -362,8 +365,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call,
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
memcpy(&addr, &ip_hdr(skb)->saddr, 4);
server = afs_find_server(&addr);
server = afs_find_server(&srx);
if (!server)
return -ENOTCONN;
call->server = server;