xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

SUNRPC: Support for congestion control when queuing is enabled

Browse Source 
Both RDMA and UDP transports require the request to get a "congestion control"
credit before they can be transmitted. Right now, this is done when
the request locks the socket. We'd like it to happen when a request attempts
to be transmitted for the first time.
In order to support retransmission of requests that already hold such
credits, we also want to ensure that they get queued first, so that we
don't deadlock with requests that have yet to obtain a credit.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust
2018-09-03 17:37:36 -04:00
parent 918f3c1fe8
commit 75891f502f
6 changed files with 109 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/sunrpc/xprt.h
View File

@@ -397,6 +397,7 @@ void xprt_complete_rqst(struct rpc_task *task, int copied);
void xprt_pin_rqst(struct rpc_rqst *req);
void xprt_unpin_rqst(struct rpc_rqst *req);
void xprt_release_rqst_cong(struct rpc_task *task);
bool xprt_request_get_cong(struct rpc_xprt *xprt, struct rpc_rqst *req);
void xprt_disconnect_done(struct rpc_xprt *xprt);
void xprt_force_disconnect(struct rpc_xprt *xprt);
void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie);
@@ -415,6 +416,7 @@ void xprt_unlock_connect(struct rpc_xprt *, void *);
#define XPRT_BINDING (5)
#define XPRT_CLOSING (6)
#define XPRT_CONGESTED (9)
#define XPRT_CWND_WAIT (10)
static inline void xprt_set_connected(struct rpc_xprt *xprt)
{