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authorLinus Torvalds <torvalds@linux-foundation.org>2019-01-02 16:21:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-01-02 16:21:50 -0800
commite45428a436765fcd154d461a2739b5640916dc00 (patch)
tree6f9e52b8e02471353bbe5247b37ba2991dfdca3b /net
parent85f78456f286da46fb054c7d45e4193cb757ac83 (diff)
parent0ad30ff67bd3e82da8c1dc4d74b88aca846dbbd9 (diff)
Merge tag 'nfsd-4.21' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields: "Thanks to Vasily Averin for fixing a use-after-free in the containerized NFSv4.2 client, and cleaning up some convoluted backchannel server code in the process. Otherwise, miscellaneous smaller bugfixes and cleanup" * tag 'nfsd-4.21' of git://linux-nfs.org/~bfields/linux: (25 commits) nfs: fixed broken compilation in nfs_callback_up_net() nfs: minor typo in nfs4_callback_up_net() sunrpc: fix debug message in svc_create_xprt() sunrpc: make visible processing error in bc_svc_process() sunrpc: remove unused xpo_prep_reply_hdr callback sunrpc: remove svc_rdma_bc_class sunrpc: remove svc_tcp_bc_class sunrpc: remove unused bc_up operation from rpc_xprt_ops sunrpc: replace svc_serv->sv_bc_xprt by boolean flag sunrpc: use-after-free in svc_process_common() sunrpc: use SVC_NET() in svcauth_gss_* functions nfsd: drop useless LIST_HEAD lockd: Show pid of lockd for remote locks NFSD remove OP_CACHEME from 4.2 op_flags nfsd: Return EPERM, not EACCES, in some SETATTR cases sunrpc: fix cache_head leak due to queued request nfsd: clean up indentation, increase indentation in switch statement svcrdma: Optimize the logic that selects the R_key to invalidate nfsd: fix a warning in __cld_pipe_upcall() nfsd4: fix crash on writing v4_end_grace before nfsd startup ...
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/auth_gss/svcauth_gss.c8
-rw-r--r--net/sunrpc/cache.c10
-rw-r--r--net/sunrpc/svc.c24
-rw-r--r--net/sunrpc/svc_xprt.c9
-rw-r--r--net/sunrpc/svcsock.c120
-rw-r--r--net/sunrpc/xprtrdma/backchannel.c20
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma.c6
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_recvfrom.c63
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_sendto.c57
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_transport.c59
-rw-r--r--net/sunrpc/xprtrdma/transport.c1
-rw-r--r--net/sunrpc/xprtrdma/xprt_rdma.h1
-rw-r--r--net/sunrpc/xprtsock.c12
13 files changed, 112 insertions, 278 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 1ece4bc3eb8d..152790ed309c 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1142,7 +1142,7 @@ static int svcauth_gss_legacy_init(struct svc_rqst *rqstp,
struct kvec *resv = &rqstp->rq_res.head[0];
struct rsi *rsip, rsikey;
int ret;
- struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
+ struct sunrpc_net *sn = net_generic(SVC_NET(rqstp), sunrpc_net_id);
memset(&rsikey, 0, sizeof(rsikey));
ret = gss_read_verf(gc, argv, authp,
@@ -1253,7 +1253,7 @@ static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
uint64_t handle;
int status;
int ret;
- struct net *net = rqstp->rq_xprt->xpt_net;
+ struct net *net = SVC_NET(rqstp);
struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
memset(&ud, 0, sizeof(ud));
@@ -1444,7 +1444,7 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
__be32 *rpcstart;
__be32 *reject_stat = resv->iov_base + resv->iov_len;
int ret;
- struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
+ struct sunrpc_net *sn = net_generic(SVC_NET(rqstp), sunrpc_net_id);
dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
argv->iov_len);
@@ -1734,7 +1734,7 @@ svcauth_gss_release(struct svc_rqst *rqstp)
struct rpc_gss_wire_cred *gc = &gsd->clcred;
struct xdr_buf *resbuf = &rqstp->rq_res;
int stat = -EINVAL;
- struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
+ struct sunrpc_net *sn = net_generic(SVC_NET(rqstp), sunrpc_net_id);
if (gc->gc_proc != RPC_GSS_PROC_DATA)
goto out;
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index f96345b1180e..12bb23b8e0c5 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -54,6 +54,11 @@ static void cache_init(struct cache_head *h, struct cache_detail *detail)
h->last_refresh = now;
}
+static void cache_fresh_locked(struct cache_head *head, time_t expiry,
+ struct cache_detail *detail);
+static void cache_fresh_unlocked(struct cache_head *head,
+ struct cache_detail *detail);
+
static struct cache_head *sunrpc_cache_find_rcu(struct cache_detail *detail,
struct cache_head *key,
int hash)
@@ -100,6 +105,7 @@ static struct cache_head *sunrpc_cache_add_entry(struct cache_detail *detail,
if (cache_is_expired(detail, tmp)) {
hlist_del_init_rcu(&tmp->cache_list);
detail->entries --;
+ cache_fresh_locked(tmp, 0, detail);
freeme = tmp;
break;
}
@@ -115,8 +121,10 @@ static struct cache_head *sunrpc_cache_add_entry(struct cache_detail *detail,
cache_get(new);
spin_unlock(&detail->hash_lock);
- if (freeme)
+ if (freeme) {
+ cache_fresh_unlocked(freeme, detail);
cache_put(freeme, detail);
+ }
return new;
}
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index d13e05f1a990..e87ddb9f7feb 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1145,6 +1145,17 @@ static __printf(2,3) void svc_printk(struct svc_rqst *rqstp, const char *fmt, ..
#endif
/*
+ * Setup response header for TCP, it has a 4B record length field.
+ */
+static void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
+{
+ struct kvec *resv = &rqstp->rq_res.head[0];
+
+ /* tcp needs a space for the record length... */
+ svc_putnl(resv, 0);
+}
+
+/*
* Common routine for processing the RPC request.
*/
static int
@@ -1172,7 +1183,8 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
clear_bit(RQ_DROPME, &rqstp->rq_flags);
/* Setup reply header */
- rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp);
+ if (rqstp->rq_prot == IPPROTO_TCP)
+ svc_tcp_prep_reply_hdr(rqstp);
svc_putu32(resv, rqstp->rq_xid);
@@ -1244,7 +1256,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
* for lower versions. RPC_PROG_MISMATCH seems to be the closest
* fit.
*/
- if (versp->vs_need_cong_ctrl &&
+ if (versp->vs_need_cong_ctrl && rqstp->rq_xprt &&
!test_bit(XPT_CONG_CTRL, &rqstp->rq_xprt->xpt_flags))
goto err_bad_vers;
@@ -1336,7 +1348,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
return 0;
close:
- if (test_bit(XPT_TEMP, &rqstp->rq_xprt->xpt_flags))
+ if (rqstp->rq_xprt && test_bit(XPT_TEMP, &rqstp->rq_xprt->xpt_flags))
svc_close_xprt(rqstp->rq_xprt);
dprintk("svc: svc_process close\n");
return 0;
@@ -1459,10 +1471,10 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
dprintk("svc: %s(%p)\n", __func__, req);
/* Build the svc_rqst used by the common processing routine */
- rqstp->rq_xprt = serv->sv_bc_xprt;
rqstp->rq_xid = req->rq_xid;
rqstp->rq_prot = req->rq_xprt->prot;
rqstp->rq_server = serv;
+ rqstp->rq_bc_net = req->rq_xprt->xprt_net;
rqstp->rq_addrlen = sizeof(req->rq_xprt->addr);
memcpy(&rqstp->rq_addr, &req->rq_xprt->addr, rqstp->rq_addrlen);
@@ -1499,9 +1511,9 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
if (!proc_error) {
/* Processing error: drop the request */
xprt_free_bc_request(req);
- return 0;
+ error = -EINVAL;
+ goto out;
}
-
/* Finally, send the reply synchronously */
memcpy(&req->rq_snd_buf, &rqstp->rq_res, sizeof(req->rq_snd_buf));
task = rpc_run_bc_task(req);
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 51d36230b6e3..4eb8fbf2508d 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -296,9 +296,9 @@ int svc_create_xprt(struct svc_serv *serv, const char *xprt_name,
request_module("svc%s", xprt_name);
err = _svc_create_xprt(serv, xprt_name, net, family, port, flags);
}
- if (err)
+ if (err < 0)
dprintk("svc: transport %s not found, err %d\n",
- xprt_name, err);
+ xprt_name, -err);
return err;
}
EXPORT_SYMBOL_GPL(svc_create_xprt);
@@ -468,10 +468,11 @@ out:
*/
void svc_reserve(struct svc_rqst *rqstp, int space)
{
+ struct svc_xprt *xprt = rqstp->rq_xprt;
+
space += rqstp->rq_res.head[0].iov_len;
- if (space < rqstp->rq_reserved) {
- struct svc_xprt *xprt = rqstp->rq_xprt;
+ if (xprt && space < rqstp->rq_reserved) {
atomic_sub((rqstp->rq_reserved - space), &xprt->xpt_reserved);
rqstp->rq_reserved = space;
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 986f3ed7d1a2..c7ae1ed5324f 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -70,13 +70,6 @@ static void svc_sock_free(struct svc_xprt *);
static struct svc_xprt *svc_create_socket(struct svc_serv *, int,
struct net *, struct sockaddr *,
int, int);
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
-static struct svc_xprt *svc_bc_create_socket(struct svc_serv *, int,
- struct net *, struct sockaddr *,
- int, int);
-static void svc_bc_sock_free(struct svc_xprt *xprt);
-#endif /* CONFIG_SUNRPC_BACKCHANNEL */
-
#ifdef CONFIG_DEBUG_LOCK_ALLOC
static struct lock_class_key svc_key[2];
static struct lock_class_key svc_slock_key[2];
@@ -617,10 +610,6 @@ svc_udp_sendto(struct svc_rqst *rqstp)
return error;
}
-static void svc_udp_prep_reply_hdr(struct svc_rqst *rqstp)
-{
-}
-
static int svc_udp_has_wspace(struct svc_xprt *xprt)
{
struct svc_sock *svsk = container_of(xprt, struct svc_sock, sk_xprt);
@@ -664,7 +653,6 @@ static const struct svc_xprt_ops svc_udp_ops = {
.xpo_release_rqst = svc_release_udp_skb,
.xpo_detach = svc_sock_detach,
.xpo_free = svc_sock_free,
- .xpo_prep_reply_hdr = svc_udp_prep_reply_hdr,
.xpo_has_wspace = svc_udp_has_wspace,
.xpo_accept = svc_udp_accept,
.xpo_secure_port = svc_sock_secure_port,
@@ -1170,17 +1158,6 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
return sent;
}
-/*
- * Setup response header. TCP has a 4B record length field.
- */
-static void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
-{
- struct kvec *resv = &rqstp->rq_res.head[0];
-
- /* tcp needs a space for the record length... */
- svc_putnl(resv, 0);
-}
-
static struct svc_xprt *svc_tcp_create(struct svc_serv *serv,
struct net *net,
struct sockaddr *sa, int salen,
@@ -1189,58 +1166,6 @@ static struct svc_xprt *svc_tcp_create(struct svc_serv *serv,
return svc_create_socket(serv, IPPROTO_TCP, net, sa, salen, flags);
}
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
-static struct svc_xprt *svc_bc_create_socket(struct svc_serv *, int,
- struct net *, struct sockaddr *,
- int, int);
-static void svc_bc_sock_free(struct svc_xprt *xprt);
-
-static struct svc_xprt *svc_bc_tcp_create(struct svc_serv *serv,
- struct net *net,
- struct sockaddr *sa, int salen,
- int flags)
-{
- return svc_bc_create_socket(serv, IPPROTO_TCP, net, sa, salen, flags);
-}
-
-static void svc_bc_tcp_sock_detach(struct svc_xprt *xprt)
-{
-}
-
-static const struct svc_xprt_ops svc_tcp_bc_ops = {
- .xpo_create = svc_bc_tcp_create,
- .xpo_detach = svc_bc_tcp_sock_detach,
- .xpo_free = svc_bc_sock_free,
- .xpo_prep_reply_hdr = svc_tcp_prep_reply_hdr,
- .xpo_secure_port = svc_sock_secure_port,
-};
-
-static struct svc_xprt_class svc_tcp_bc_class = {
- .xcl_name = "tcp-bc",
- .xcl_owner = THIS_MODULE,
- .xcl_ops = &svc_tcp_bc_ops,
- .xcl_max_payload = RPCSVC_MAXPAYLOAD_TCP,
-};
-
-static void svc_init_bc_xprt_sock(void)
-{
- svc_reg_xprt_class(&svc_tcp_bc_class);
-}
-
-static void svc_cleanup_bc_xprt_sock(void)
-{
- svc_unreg_xprt_class(&svc_tcp_bc_class);
-}
-#else /* CONFIG_SUNRPC_BACKCHANNEL */
-static void svc_init_bc_xprt_sock(void)
-{
-}
-
-static void svc_cleanup_bc_xprt_sock(void)
-{
-}
-#endif /* CONFIG_SUNRPC_BACKCHANNEL */
-
static const struct svc_xprt_ops svc_tcp_ops = {
.xpo_create = svc_tcp_create,
.xpo_recvfrom = svc_tcp_recvfrom,
@@ -1248,7 +1173,6 @@ static const struct svc_xprt_ops svc_tcp_ops = {
.xpo_release_rqst = svc_release_skb,
.xpo_detach = svc_tcp_sock_detach,
.xpo_free = svc_sock_free,
- .xpo_prep_reply_hdr = svc_tcp_prep_reply_hdr,
.xpo_has_wspace = svc_tcp_has_wspace,
.xpo_accept = svc_tcp_accept,
.xpo_secure_port = svc_sock_secure_port,
@@ -1267,14 +1191,12 @@ void svc_init_xprt_sock(void)
{
svc_reg_xprt_class(&svc_tcp_class);
svc_reg_xprt_class(&svc_udp_class);
- svc_init_bc_xprt_sock();
}
void svc_cleanup_xprt_sock(void)
{
svc_unreg_xprt_class(&svc_tcp_class);
svc_unreg_xprt_class(&svc_udp_class);
- svc_cleanup_bc_xprt_sock();
}
static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
@@ -1595,45 +1517,3 @@ static void svc_sock_free(struct svc_xprt *xprt)
sock_release(svsk->sk_sock);
kfree(svsk);
}
-
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
-/*
- * Create a back channel svc_xprt which shares the fore channel socket.
- */
-static struct svc_xprt *svc_bc_create_socket(struct svc_serv *serv,
- int protocol,
- struct net *net,
- struct sockaddr *sin, int len,
- int flags)
-{
- struct svc_sock *svsk;
- struct svc_xprt *xprt;
-
- if (protocol != IPPROTO_TCP) {
- printk(KERN_WARNING "svc: only TCP sockets"
- " supported on shared back channel\n");
- return ERR_PTR(-EINVAL);
- }
-
- svsk = kzalloc(sizeof(*svsk), GFP_KERNEL);
- if (!svsk)
- return ERR_PTR(-ENOMEM);
-
- xprt = &svsk->sk_xprt;
- svc_xprt_init(net, &svc_tcp_bc_class, xprt, serv);
- set_bit(XPT_CONG_CTRL, &svsk->sk_xprt.xpt_flags);
-
- serv->sv_bc_xprt = xprt;
-
- return xprt;
-}
-
-/*
- * Free a back channel svc_sock.
- */
-static void svc_bc_sock_free(struct svc_xprt *xprt)
-{
- if (xprt)
- kfree(container_of(xprt, struct svc_sock, sk_xprt));
-}
-#endif /* CONFIG_SUNRPC_BACKCHANNEL */
diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c
index e5b367a3e517..edba0d35776b 100644
--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -114,26 +114,6 @@ out_err:
}
/**
- * xprt_rdma_bc_up - Create transport endpoint for backchannel service
- * @serv: server endpoint
- * @net: network namespace
- *
- * The "xprt" is an implied argument: it supplies the name of the
- * backchannel transport class.
- *
- * Returns zero on success, negative errno on failure
- */
-int xprt_rdma_bc_up(struct svc_serv *serv, struct net *net)
-{
- int ret;
-
- ret = svc_create_xprt(serv, "rdma-bc", net, PF_INET, 0, 0);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-/**
* xprt_rdma_bc_maxpayload - Return maximum backchannel message size
* @xprt: transport
*
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
index 134bef6a451e..abdb3004a1e3 100644
--- a/net/sunrpc/xprtrdma/svc_rdma.c
+++ b/net/sunrpc/xprtrdma/svc_rdma.c
@@ -235,9 +235,6 @@ void svc_rdma_cleanup(void)
unregister_sysctl_table(svcrdma_table_header);
svcrdma_table_header = NULL;
}
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
- svc_unreg_xprt_class(&svc_rdma_bc_class);
-#endif
svc_unreg_xprt_class(&svc_rdma_class);
}
@@ -259,8 +256,5 @@ int svc_rdma_init(void)
/* Register RDMA with the SVC transport switch */
svc_reg_xprt_class(&svc_rdma_class);
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
- svc_reg_xprt_class(&svc_rdma_bc_class);
-#endif
return 0;
}
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index b24d5b8f2fee..828b149eaaef 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -485,6 +485,68 @@ static __be32 *xdr_check_reply_chunk(__be32 *p, const __be32 *end)
return p;
}
+/* RPC-over-RDMA Version One private extension: Remote Invalidation.
+ * Responder's choice: requester signals it can handle Send With
+ * Invalidate, and responder chooses one R_key to invalidate.
+ *
+ * If there is exactly one distinct R_key in the received transport
+ * header, set rc_inv_rkey to that R_key. Otherwise, set it to zero.
+ *
+ * Perform this operation while the received transport header is
+ * still in the CPU cache.
+ */
+static void svc_rdma_get_inv_rkey(struct svcxprt_rdma *rdma,
+ struct svc_rdma_recv_ctxt *ctxt)
+{
+ __be32 inv_rkey, *p;
+ u32 i, segcount;
+
+ ctxt->rc_inv_rkey = 0;
+
+ if (!rdma->sc_snd_w_inv)
+ return;
+
+ inv_rkey = xdr_zero;
+ p = ctxt->rc_recv_buf;
+ p += rpcrdma_fixed_maxsz;
+
+ /* Read list */
+ while (*p++ != xdr_zero) {
+ p++; /* position */
+ if (inv_rkey == xdr_zero)
+ inv_rkey = *p;
+ else if (inv_rkey != *p)
+ return;
+ p += 4;
+ }
+
+ /* Write list */
+ while (*p++ != xdr_zero) {
+ segcount = be32_to_cpup(p++);
+ for (i = 0; i < segcount; i++) {
+ if (inv_rkey == xdr_zero)
+ inv_rkey = *p;
+ else if (inv_rkey != *p)
+ return;
+ p += 4;
+ }
+ }
+
+ /* Reply chunk */
+ if (*p++ != xdr_zero) {
+ segcount = be32_to_cpup(p++);
+ for (i = 0; i < segcount; i++) {
+ if (inv_rkey == xdr_zero)
+ inv_rkey = *p;
+ else if (inv_rkey != *p)
+ return;
+ p += 4;
+ }
+ }
+
+ ctxt->rc_inv_rkey = be32_to_cpu(inv_rkey);
+}
+
/* On entry, xdr->head[0].iov_base points to first byte in the
* RPC-over-RDMA header.
*
@@ -746,6 +808,7 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
svc_rdma_recv_ctxt_put(rdma_xprt, ctxt);
return ret;
}
+ svc_rdma_get_inv_rkey(rdma_xprt, ctxt);
p += rpcrdma_fixed_maxsz;
if (*p != xdr_zero)
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index 8602a5f1b515..cf51b8f9b15f 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -484,32 +484,6 @@ static void svc_rdma_get_write_arrays(__be32 *rdma_argp,
*reply = NULL;
}
-/* RPC-over-RDMA Version One private extension: Remote Invalidation.
- * Responder's choice: requester signals it can handle Send With
- * Invalidate, and responder chooses one rkey to invalidate.
- *
- * Find a candidate rkey to invalidate when sending a reply. Picks the
- * first R_key it finds in the chunk lists.
- *
- * Returns zero if RPC's chunk lists are empty.
- */
-static u32 svc_rdma_get_inv_rkey(__be32 *rdma_argp,
- __be32 *wr_lst, __be32 *rp_ch)
-{
- __be32 *p;
-
- p = rdma_argp + rpcrdma_fixed_maxsz;
- if (*p != xdr_zero)
- p += 2;
- else if (wr_lst && be32_to_cpup(wr_lst + 1))
- p = wr_lst + 2;
- else if (rp_ch && be32_to_cpup(rp_ch + 1))
- p = rp_ch + 2;
- else
- return 0;
- return be32_to_cpup(p);
-}
-
static int svc_rdma_dma_map_page(struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *ctxt,
struct page *page,
@@ -672,7 +646,7 @@ static void svc_rdma_save_io_pages(struct svc_rqst *rqstp,
*
* RDMA Send is the last step of transmitting an RPC reply. Pages
* involved in the earlier RDMA Writes are here transferred out
- * of the rqstp and into the ctxt's page array. These pages are
+ * of the rqstp and into the sctxt's page array. These pages are
* DMA unmapped by each Write completion, but the subsequent Send
* completion finally releases these pages.
*
@@ -680,32 +654,31 @@ static void svc_rdma_save_io_pages(struct svc_rqst *rqstp,
* - The Reply's transport header will never be larger than a page.
*/
static int svc_rdma_send_reply_msg(struct svcxprt_rdma *rdma,
- struct svc_rdma_send_ctxt *ctxt,
- __be32 *rdma_argp,
+ struct svc_rdma_send_ctxt *sctxt,
+ struct svc_rdma_recv_ctxt *rctxt,
struct svc_rqst *rqstp,
__be32 *wr_lst, __be32 *rp_ch)
{
int ret;
if (!rp_ch) {
- ret = svc_rdma_map_reply_msg(rdma, ctxt,
+ ret = svc_rdma_map_reply_msg(rdma, sctxt,
&rqstp->rq_res, wr_lst);
if (ret < 0)
return ret;
}
- svc_rdma_save_io_pages(rqstp, ctxt);
+ svc_rdma_save_io_pages(rqstp, sctxt);
- ctxt->sc_send_wr.opcode = IB_WR_SEND;
- if (rdma->sc_snd_w_inv) {
- ctxt->sc_send_wr.ex.invalidate_rkey =
- svc_rdma_get_inv_rkey(rdma_argp, wr_lst, rp_ch);
- if (ctxt->sc_send_wr.ex.invalidate_rkey)
- ctxt->sc_send_wr.opcode = IB_WR_SEND_WITH_INV;
+ if (rctxt->rc_inv_rkey) {
+ sctxt->sc_send_wr.opcode = IB_WR_SEND_WITH_INV;
+ sctxt->sc_send_wr.ex.invalidate_rkey = rctxt->rc_inv_rkey;
+ } else {
+ sctxt->sc_send_wr.opcode = IB_WR_SEND;
}
dprintk("svcrdma: posting Send WR with %u sge(s)\n",
- ctxt->sc_send_wr.num_sge);
- return svc_rdma_send(rdma, &ctxt->sc_send_wr);
+ sctxt->sc_send_wr.num_sge);
+ return svc_rdma_send(rdma, &sctxt->sc_send_wr);
}
/* Given the client-provided Write and Reply chunks, the server was not
@@ -741,10 +714,6 @@ static int svc_rdma_send_error_msg(struct svcxprt_rdma *rdma,
return 0;
}
-void svc_rdma_prep_reply_hdr(struct svc_rqst *rqstp)
-{
-}
-
/**
* svc_rdma_sendto - Transmit an RPC reply
* @rqstp: processed RPC request, reply XDR already in ::rq_res
@@ -809,7 +778,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
}
svc_rdma_sync_reply_hdr(rdma, sctxt, svc_rdma_reply_hdr_len(rdma_resp));
- ret = svc_rdma_send_reply_msg(rdma, sctxt, rdma_argp, rqstp,
+ ret = svc_rdma_send_reply_msg(rdma, sctxt, rctxt, rqstp,
wr_lst, rp_ch);
if (ret < 0)
goto err1;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 2f7ec8912f49..924c17d46903 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -85,7 +85,6 @@ static const struct svc_xprt_ops svc_rdma_ops = {
.xpo_release_rqst = svc_rdma_release_rqst,
.xpo_detach = svc_rdma_detach,
.xpo_free = svc_rdma_free,
- .xpo_prep_reply_hdr = svc_rdma_prep_reply_hdr,
.xpo_has_wspace = svc_rdma_has_wspace,
.xpo_accept = svc_rdma_accept,
.xpo_secure_port = svc_rdma_secure_port,
@@ -100,64 +99,6 @@ struct svc_xprt_class svc_rdma_class = {
.xcl_ident = XPRT_TRANSPORT_RDMA,
};
-#if defined(CONFIG_SUNRPC_BACKCHANNEL)
-static struct svc_xprt *svc_rdma_bc_create(struct svc_serv *, struct net *,
- struct sockaddr *, int, int);
-static void svc_rdma_bc_detach(struct svc_xprt *);
-static void svc_rdma_bc_free(struct svc_xprt *);
-
-static const struct svc_xprt_ops svc_rdma_bc_ops = {
- .xpo_create = svc_rdma_bc_create,
- .xpo_detach = svc_rdma_bc_detach,
- .xpo_free = svc_rdma_bc_free,
- .xpo_prep_reply_hdr = svc_rdma_prep_reply_hdr,
- .xpo_secure_port = svc_rdma_secure_port,
-};
-
-struct svc_xprt_class svc_rdma_bc_class = {
- .xcl_name = "rdma-bc",
- .xcl_owner = THIS_MODULE,
- .xcl_ops = &svc_rdma_bc_ops,
- .xcl_max_payload = (1024 - RPCRDMA_HDRLEN_MIN)
-};
-
-static struct svc_xprt *svc_rdma_bc_create(struct svc_serv *serv,
- struct net *net,
- struct sockaddr *sa, int salen,
- int flags)
-{
- struct svcxprt_rdma *cma_xprt;
- struct svc_xprt *xprt;
-
- cma_xprt = svc_rdma_create_xprt(serv, net);
- if (!cma_xprt)
- return ERR_PTR(-ENOMEM);
- xprt = &cma_xprt->sc_xprt;
-
- svc_xprt_init(net, &svc_rdma_bc_class, xprt, serv);
- set_bit(XPT_CONG_CTRL, &xprt->xpt_flags);
- serv->sv_bc_xprt = xprt;
-
- dprintk("svcrdma: %s(%p)\n", __func__, xprt);
- return xprt;
-}
-
-static void svc_rdma_bc_detach(struct svc_xprt *xprt)
-{
- dprintk("svcrdma: %s(%p)\n", __func__, xprt);
-}
-
-static void svc_rdma_bc_free(struct svc_xprt *xprt)
-{
- struct svcxprt_rdma *rdma =
- container_of(xprt, struct svcxprt_rdma, sc_xprt);
-
- dprintk("svcrdma: %s(%p)\n", __func__, xprt);
- if (xprt)
- kfree(rdma);
-}
-#endif /* CONFIG_SUNRPC_BACKCHANNEL */
-
/* QP event handler */
static void qp_event_handler(struct ib_event *event, void *context)
{
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index ae2a83828953..9141068693fa 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -827,7 +827,6 @@ static const struct rpc_xprt_ops xprt_rdma_procs = {
.inject_disconnect = xprt_rdma_inject_disconnect,
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
.bc_setup = xprt_rdma_bc_setup,
- .bc_up = xprt_rdma_bc_up,
.bc_maxpayload = xprt_rdma_bc_maxpayload,
.bc_free_rqst = xprt_rdma_bc_free_rqst,
.bc_destroy = xprt_rdma_bc_destroy,
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index a13ccb643ce0..9218dbebedce 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -661,7 +661,6 @@ void xprt_rdma_cleanup(void);
*/
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
int xprt_rdma_bc_setup(struct rpc_xprt *, unsigned int);
-int xprt_rdma_bc_up(struct svc_serv *, struct net *);
size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *);
int rpcrdma_bc_post_recv(struct rpcrdma_xprt *, unsigned int);
void rpcrdma_bc_receive_call(struct rpcrdma_xprt *, struct rpcrdma_rep *);
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index f0b3700cec95..44467caf3cd8 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1400,17 +1400,6 @@ static void xs_tcp_force_close(struct rpc_xprt *xprt)
}
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
-static int xs_tcp_bc_up(struct svc_serv *serv, struct net *net)
-{
- int ret;
-
- ret = svc_create_xprt(serv, "tcp-bc", net, PF_INET, 0,
- SVC_SOCK_ANONYMOUS);
- if (ret < 0)
- return ret;
- return 0;
-}
-
static size_t xs_tcp_bc_maxpayload(struct rpc_xprt *xprt)
{
return PAGE_SIZE;
@@ -2665,7 +2654,6 @@ static const struct rpc_xprt_ops xs_tcp_ops = {
.inject_disconnect = xs_inject_disconnect,
#ifdef CONFIG_SUNRPC_BACKCHANNEL
.bc_setup = xprt_setup_bc,
- .bc_up = xs_tcp_bc_up,
.bc_maxpayload = xs_tcp_bc_maxpayload,
.bc_free_rqst = xprt_free_bc_rqst,
.bc_destroy = xprt_destroy_bc,

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