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| author | David Howells <dhowells@redhat.com> | 2017-07-05 16:25:37 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-11 06:08:58 -0400 |
| commit | c4fac9100456995c10b65c13be84554258ed7fc8 (patch) | |
| tree | ea395c955dfac2337eff1a4608caea5f3a26701b /net/9p/trans_rdma.c | |
| parent | 86a1da6d30ad727c2a9cc5d6a51bff6d830036b5 (diff) | |
| download | lwn-c4fac9100456995c10b65c13be84554258ed7fc8.tar.gz lwn-c4fac9100456995c10b65c13be84554258ed7fc8.zip | |
9p: Implement show_options
Implement the show_options superblock op for 9p as part of a bid to get
rid of s_options and generic_show_options() to make it easier to implement
a context-based mount where the mount options can be passed individually
over a file descriptor.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric Van Hensbergen <ericvh@gmail.com>
cc: Ron Minnich <rminnich@sandia.gov>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: v9fs-developer@lists.sourceforge.net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/9p/trans_rdma.c')
| -rw-r--r-- | net/9p/trans_rdma.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c index 553ed4ecb6a0..6d8e3031978f 100644 --- a/net/9p/trans_rdma.c +++ b/net/9p/trans_rdma.c @@ -43,6 +43,7 @@ #include <linux/parser.h> #include <linux/semaphore.h> #include <linux/slab.h> +#include <linux/seq_file.h> #include <net/9p/9p.h> #include <net/9p/client.h> #include <net/9p/transport.h> @@ -70,6 +71,8 @@ * @dm_mr: DMA Memory Region pointer * @lkey: The local access only memory region key * @timeout: Number of uSecs to wait for connection management events + * @privport: Whether a privileged port may be used + * @port: The port to use * @sq_depth: The depth of the Send Queue * @sq_sem: Semaphore for the SQ * @rq_depth: The depth of the Receive Queue. @@ -95,6 +98,8 @@ struct p9_trans_rdma { struct ib_qp *qp; struct ib_cq *cq; long timeout; + bool privport; + u16 port; int sq_depth; struct semaphore sq_sem; int rq_depth; @@ -133,10 +138,10 @@ struct p9_rdma_context { */ struct p9_rdma_opts { short port; + bool privport; int sq_depth; int rq_depth; long timeout; - int privport; }; /* @@ -159,6 +164,23 @@ static match_table_t tokens = { {Opt_err, NULL}, }; +static int p9_rdma_show_options(struct seq_file *m, struct p9_client *clnt) +{ + struct p9_trans_rdma *rdma = clnt->trans; + + if (rdma->port != P9_PORT) + seq_printf(m, ",port=%u", rdma->port); + if (rdma->sq_depth != P9_RDMA_SQ_DEPTH) + seq_printf(m, ",sq=%u", rdma->sq_depth); + if (rdma->rq_depth != P9_RDMA_RQ_DEPTH) + seq_printf(m, ",rq=%u", rdma->rq_depth); + if (rdma->timeout != P9_RDMA_TIMEOUT) + seq_printf(m, ",timeout=%lu", rdma->timeout); + if (rdma->privport) + seq_puts(m, ",privport"); + return 0; +} + /** * parse_opts - parse mount options into rdma options structure * @params: options string passed from mount @@ -177,7 +199,7 @@ static int parse_opts(char *params, struct p9_rdma_opts *opts) opts->sq_depth = P9_RDMA_SQ_DEPTH; opts->rq_depth = P9_RDMA_RQ_DEPTH; opts->timeout = P9_RDMA_TIMEOUT; - opts->privport = 0; + opts->privport = false; if (!params) return 0; @@ -218,7 +240,7 @@ static int parse_opts(char *params, struct p9_rdma_opts *opts) opts->timeout = option; break; case Opt_privport: - opts->privport = 1; + opts->privport = true; break; default: continue; @@ -560,6 +582,8 @@ static struct p9_trans_rdma *alloc_rdma(struct p9_rdma_opts *opts) if (!rdma) return NULL; + rdma->port = opts->port; + rdma->privport = opts->privport; rdma->sq_depth = opts->sq_depth; rdma->rq_depth = opts->rq_depth; rdma->timeout = opts->timeout; @@ -733,6 +757,7 @@ static struct p9_trans_module p9_rdma_trans = { .request = rdma_request, .cancel = rdma_cancel, .cancelled = rdma_cancelled, + .show_options = p9_rdma_show_options, }; /** |