diff options
Diffstat (limited to 'net/sunrpc/xprtsock.c')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 90 |
1 files changed, 47 insertions, 43 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 4f154d388748..9b5de31aa429 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -969,10 +969,12 @@ static void xs_local_data_read_skb(struct rpc_xprt *xprt, return; /* Look up and lock the request corresponding to the given XID */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->recv_lock); rovr = xprt_lookup_rqst(xprt, *xp); if (!rovr) goto out_unlock; + xprt_pin_rqst(rovr); + spin_unlock(&xprt->recv_lock); task = rovr->rq_task; copied = rovr->rq_private_buf.buflen; @@ -981,13 +983,16 @@ static void xs_local_data_read_skb(struct rpc_xprt *xprt, if (xs_local_copy_to_xdr(&rovr->rq_private_buf, skb)) { dprintk("RPC: sk_buff copy failed\n"); - goto out_unlock; + spin_lock(&xprt->recv_lock); + goto out_unpin; } + spin_lock(&xprt->recv_lock); xprt_complete_rqst(task, copied); - +out_unpin: + xprt_unpin_rqst(rovr); out_unlock: - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->recv_lock); } static void xs_local_data_receive(struct sock_xprt *transport) @@ -1050,10 +1055,12 @@ static void xs_udp_data_read_skb(struct rpc_xprt *xprt, return; /* Look up and lock the request corresponding to the given XID */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->recv_lock); rovr = xprt_lookup_rqst(xprt, *xp); if (!rovr) goto out_unlock; + xprt_pin_rqst(rovr); + spin_unlock(&xprt->recv_lock); task = rovr->rq_task; if ((copied = rovr->rq_private_buf.buflen) > repsize) @@ -1062,16 +1069,21 @@ static void xs_udp_data_read_skb(struct rpc_xprt *xprt, /* Suck it into the iovec, verify checksum if not done by hw. */ if (csum_partial_copy_to_xdr(&rovr->rq_private_buf, skb)) { __UDPX_INC_STATS(sk, UDP_MIB_INERRORS); - goto out_unlock; + spin_lock(&xprt->recv_lock); + goto out_unpin; } __UDPX_INC_STATS(sk, UDP_MIB_INDATAGRAMS); + spin_lock_bh(&xprt->transport_lock); xprt_adjust_cwnd(xprt, task, copied); + spin_unlock_bh(&xprt->transport_lock); + spin_lock(&xprt->recv_lock); xprt_complete_rqst(task, copied); - +out_unpin: + xprt_unpin_rqst(rovr); out_unlock: - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->recv_lock); } static void xs_udp_data_receive(struct sock_xprt *transport) @@ -1277,25 +1289,12 @@ static inline void xs_tcp_read_common(struct rpc_xprt *xprt, } len = desc->count; - if (len > transport->tcp_reclen - transport->tcp_offset) { - struct xdr_skb_reader my_desc; - - len = transport->tcp_reclen - transport->tcp_offset; - memcpy(&my_desc, desc, sizeof(my_desc)); - my_desc.count = len; - r = xdr_partial_copy_from_skb(rcvbuf, transport->tcp_copied, - &my_desc, xdr_skb_read_bits); - desc->count -= r; - desc->offset += r; - } else - r = xdr_partial_copy_from_skb(rcvbuf, transport->tcp_copied, + if (len > transport->tcp_reclen - transport->tcp_offset) + desc->count = transport->tcp_reclen - transport->tcp_offset; + r = xdr_partial_copy_from_skb(rcvbuf, transport->tcp_copied, desc, xdr_skb_read_bits); - if (r > 0) { - transport->tcp_copied += r; - transport->tcp_offset += r; - } - if (r != len) { + if (desc->count) { /* Error when copying to the receive buffer, * usually because we weren't able to allocate * additional buffer pages. All we can do now @@ -1315,6 +1314,10 @@ static inline void xs_tcp_read_common(struct rpc_xprt *xprt, return; } + transport->tcp_copied += r; + transport->tcp_offset += r; + desc->count = len - r; + dprintk("RPC: XID %08x read %zd bytes\n", ntohl(transport->tcp_xid), r); dprintk("RPC: xprt = %p, tcp_copied = %lu, tcp_offset = %u, " @@ -1343,21 +1346,24 @@ static inline int xs_tcp_read_reply(struct rpc_xprt *xprt, dprintk("RPC: read reply XID %08x\n", ntohl(transport->tcp_xid)); /* Find and lock the request corresponding to this xid */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->recv_lock); req = xprt_lookup_rqst(xprt, transport->tcp_xid); if (!req) { dprintk("RPC: XID %08x request not found!\n", ntohl(transport->tcp_xid)); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->recv_lock); return -1; } + xprt_pin_rqst(req); + spin_unlock(&xprt->recv_lock); xs_tcp_read_common(xprt, desc, req); + spin_lock(&xprt->recv_lock); if (!(transport->tcp_flags & TCP_RCV_COPY_DATA)) xprt_complete_rqst(req->rq_task, transport->tcp_copied); - - spin_unlock_bh(&xprt->transport_lock); + xprt_unpin_rqst(req); + spin_unlock(&xprt->recv_lock); return 0; } @@ -1376,11 +1382,9 @@ static int xs_tcp_read_callback(struct rpc_xprt *xprt, container_of(xprt, struct sock_xprt, xprt); struct rpc_rqst *req; - /* Look up and lock the request corresponding to the given XID */ - spin_lock_bh(&xprt->transport_lock); + /* Look up the request corresponding to the given XID */ req = xprt_lookup_bc_request(xprt, transport->tcp_xid); if (req == NULL) { - spin_unlock_bh(&xprt->transport_lock); printk(KERN_WARNING "Callback slot table overflowed\n"); xprt_force_disconnect(xprt); return -1; @@ -1391,7 +1395,6 @@ static int xs_tcp_read_callback(struct rpc_xprt *xprt, if (!(transport->tcp_flags & TCP_RCV_COPY_DATA)) xprt_complete_bc_request(req, transport->tcp_copied); - spin_unlock_bh(&xprt->transport_lock); return 0; } @@ -1516,6 +1519,7 @@ static void xs_tcp_data_receive(struct sock_xprt *transport) .arg.data = xprt, }; unsigned long total = 0; + int loop; int read = 0; mutex_lock(&transport->recv_mutex); @@ -1524,20 +1528,20 @@ static void xs_tcp_data_receive(struct sock_xprt *transport) goto out; /* We use rd_desc to pass struct xprt to xs_tcp_data_recv */ - for (;;) { + for (loop = 0; loop < 64; loop++) { lock_sock(sk); read = tcp_read_sock(sk, &rd_desc, xs_tcp_data_recv); if (read <= 0) { clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state); release_sock(sk); - if (!test_bit(XPRT_SOCK_DATA_READY, &transport->sock_state)) - break; - } else { - release_sock(sk); - total += read; + break; } + release_sock(sk); + total += read; rd_desc.count = 65536; } + if (test_bit(XPRT_SOCK_DATA_READY, &transport->sock_state)) + queue_work(xprtiod_workqueue, &transport->recv_worker); out: mutex_unlock(&transport->recv_mutex); trace_xs_tcp_data_ready(xprt, read, total); @@ -2724,7 +2728,7 @@ static void bc_destroy(struct rpc_xprt *xprt) module_put(THIS_MODULE); } -static struct rpc_xprt_ops xs_local_ops = { +static const struct rpc_xprt_ops xs_local_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, .alloc_slot = xprt_alloc_slot, @@ -2742,7 +2746,7 @@ static struct rpc_xprt_ops xs_local_ops = { .disable_swap = xs_disable_swap, }; -static struct rpc_xprt_ops xs_udp_ops = { +static const struct rpc_xprt_ops xs_udp_ops = { .set_buffer_size = xs_udp_set_buffer_size, .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, @@ -2764,7 +2768,7 @@ static struct rpc_xprt_ops xs_udp_ops = { .inject_disconnect = xs_inject_disconnect, }; -static struct rpc_xprt_ops xs_tcp_ops = { +static const struct rpc_xprt_ops xs_tcp_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, .alloc_slot = xprt_lock_and_alloc_slot, @@ -2795,7 +2799,7 @@ static struct rpc_xprt_ops xs_tcp_ops = { * The rpc_xprt_ops for the server backchannel */ -static struct rpc_xprt_ops bc_tcp_ops = { +static const struct rpc_xprt_ops bc_tcp_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xprt_release_xprt, .alloc_slot = xprt_alloc_slot, |
