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| author | Olga Kornievskaia <kolga@netapp.com> | 2021-08-27 21:37:18 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2021-08-27 23:37:29 +0300 |
| commit | dc48e0abee245e2f0361bd8d4e3b00f70450fab2 (patch) | |
| tree | a11fc5bebca7ff13ccbfb9fcb987d48d355fff4a /net/sunrpc/clnt.c | |
| parent | 7e134205f62955369619021a695cd78fefd32451 (diff) | |
| download | linux-dc48e0abee245e2f0361bd8d4e3b00f70450fab2.tar.xz | |
SUNRPC enforce creation of no more than max_connect xprts
If we are adding new transports via rpc_clnt_test_and_add_xprt()
then check if we've reached the limit. Currently only pnfs path
adds transports via that function but this is done in
preparation when the client would add new transports when
session trunking is detected. A warning is logged if the
limit is reached.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 451ac7d031db..f056ff931444 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -2787,6 +2787,15 @@ int rpc_clnt_test_and_add_xprt(struct rpc_clnt *clnt, struct rpc_cb_add_xprt_calldata *data; struct rpc_task *task; + if (xps->xps_nunique_destaddr_xprts + 1 > clnt->cl_max_connect) { + rcu_read_lock(); + pr_warn("SUNRPC: reached max allowed number (%d) did not add " + "transport to server: %s\n", clnt->cl_max_connect, + rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); + return -EINVAL; + } + data = kmalloc(sizeof(*data), GFP_NOFS); if (!data) return -ENOMEM; |