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authorDavid Howells <dhowells@redhat.com>2017-05-24 17:02:32 +0100
committerDavid S. Miller <davem@davemloft.net>2017-05-25 13:15:11 -0400
commit2baec2c3f854d1f79c7bb28386484e144e864a14 (patch)
tree4b416db84d3579fe825458d021951955d120ed69 /net/rxrpc/conn_service.c
parent878cd3ba37f77ded9c85e9857e3182a7fe8f5dc3 (diff)
rxrpc: Support network namespacing
Support network namespacing in AF_RXRPC with the following changes: (1) All the local endpoint, peer and call lists, locks, counters, etc. are moved into the per-namespace record. (2) All the connection tracking is moved into the per-namespace record with the exception of the client connection ID tree, which is kept global so that connection IDs are kept unique per-machine. (3) Each namespace gets its own epoch. This allows each network namespace to pretend to be a separate client machine. (4) The /proc/net/rxrpc_xxx files are now called /proc/net/rxrpc/xxx and the contents reflect the namespace. fs/afs/ should be okay with this patch as it explicitly requires the current net namespace to be init_net to permit a mount to proceed at the moment. It will, however, need updating so that cells, IP addresses and DNS records are per-namespace also. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/conn_service.c')
-rw-r--r--net/rxrpc/conn_service.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/rxrpc/conn_service.c b/net/rxrpc/conn_service.c
index eef551f40dc2..edfc633f7d5e 100644
--- a/net/rxrpc/conn_service.c
+++ b/net/rxrpc/conn_service.c
@@ -121,7 +121,8 @@ replace_old_connection:
* Preallocate a service connection. The connection is placed on the proc and
* reap lists so that we don't have to get the lock from BH context.
*/
-struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t gfp)
+struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *rxnet,
+ gfp_t gfp)
{
struct rxrpc_connection *conn = rxrpc_alloc_connection(gfp);
@@ -132,10 +133,10 @@ struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t gfp)
conn->state = RXRPC_CONN_SERVICE_PREALLOC;
atomic_set(&conn->usage, 2);
- write_lock(&rxrpc_connection_lock);
- list_add_tail(&conn->link, &rxrpc_connections);
- list_add_tail(&conn->proc_link, &rxrpc_connection_proc_list);
- write_unlock(&rxrpc_connection_lock);
+ write_lock(&rxnet->conn_lock);
+ list_add_tail(&conn->link, &rxnet->service_conns);
+ list_add_tail(&conn->proc_link, &rxnet->conn_proc_list);
+ write_unlock(&rxnet->conn_lock);
trace_rxrpc_conn(conn, rxrpc_conn_new_service,
atomic_read(&conn->usage),