diff options
author | Chuck Lever <chuck.lever@oracle.com> | 2006-08-22 20:06:18 -0400 |
---|---|---|
committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-09-22 23:24:47 -0400 |
commit | edb267a688fcee5335d596752f117a30c7152e44 (patch) | |
tree | b73a91f17f22baa81a3c0a4df1b01929680a2807 /net/sunrpc | |
parent | 39d7bbcb5ba5e9d8d658b70903dd7939400e57db (diff) | |
download | linux-edb267a688fcee5335d596752f117a30c7152e44.tar.bz2 |
SUNRPC: add xprt switch API for printing formatted remote peer addresses
Add a new method to the transport switch API to provide a way to convert
the opaque contents of xprt->addr to a human-readable string.
Test plan:
Compile kernel with CONFIG_NFS enabled.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r-- | net/sunrpc/xprtsock.c | 79 |
1 files changed, 71 insertions, 8 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 4c98b89a5b48..cb8e6c34e12f 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -125,6 +125,47 @@ static inline void xs_pktdump(char *msg, u32 *packet, unsigned int count) } #endif +static void xs_format_peer_addresses(struct rpc_xprt *xprt) +{ + struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr; + char *buf; + + buf = kzalloc(20, GFP_KERNEL); + if (buf) { + snprintf(buf, 20, "%u.%u.%u.%u", + NIPQUAD(addr->sin_addr.s_addr)); + } + xprt->address_strings[RPC_DISPLAY_ADDR] = buf; + + buf = kzalloc(8, GFP_KERNEL); + if (buf) { + snprintf(buf, 8, "%u", + ntohs(addr->sin_port)); + } + xprt->address_strings[RPC_DISPLAY_PORT] = buf; + + if (xprt->prot == IPPROTO_UDP) + xprt->address_strings[RPC_DISPLAY_PROTO] = "udp"; + else + xprt->address_strings[RPC_DISPLAY_PROTO] = "tcp"; + + buf = kzalloc(48, GFP_KERNEL); + if (buf) { + snprintf(buf, 48, "addr=%u.%u.%u.%u port=%u proto=%s", + NIPQUAD(addr->sin_addr.s_addr), + ntohs(addr->sin_port), + xprt->prot == IPPROTO_UDP ? "udp" : "tcp"); + } + xprt->address_strings[RPC_DISPLAY_ALL] = buf; +} + +static void xs_free_peer_addresses(struct rpc_xprt *xprt) +{ + kfree(xprt->address_strings[RPC_DISPLAY_ADDR]); + kfree(xprt->address_strings[RPC_DISPLAY_PORT]); + kfree(xprt->address_strings[RPC_DISPLAY_ALL]); +} + #define XS_SENDMSG_FLAGS (MSG_DONTWAIT | MSG_NOSIGNAL) static inline int xs_send_head(struct socket *sock, struct sockaddr *addr, int addrlen, struct xdr_buf *xdr, unsigned int base, unsigned int len) @@ -490,6 +531,7 @@ static void xs_destroy(struct rpc_xprt *xprt) xprt_disconnect(xprt); xs_close(xprt); + xs_free_peer_addresses(xprt); kfree(xprt->slot); } @@ -965,6 +1007,19 @@ static unsigned short xs_get_random_port(void) } /** + * xs_print_peer_address - format an IPv4 address for printing + * @xprt: generic transport + * @format: flags field indicating which parts of the address to render + */ +static char *xs_print_peer_address(struct rpc_xprt *xprt, enum rpc_display_format_t format) +{ + if (xprt->address_strings[format] != NULL) + return xprt->address_strings[format]; + else + return "unprintable"; +} + +/** * xs_set_port - reset the port number in the remote endpoint address * @xprt: generic transport * @port: new port number @@ -1019,8 +1074,6 @@ static void xs_udp_connect_worker(void *args) if (xprt->shutdown || !xprt_bound(xprt)) goto out; - dprintk("RPC: xs_udp_connect_worker for xprt %p\n", xprt); - /* Start by resetting any existing state */ xs_close(xprt); @@ -1034,6 +1087,9 @@ static void xs_udp_connect_worker(void *args) goto out; } + dprintk("RPC: worker connecting xprt %p to address: %s\n", + xprt, xs_print_peer_address(xprt, RPC_DISPLAY_ALL)); + if (!xprt->inet) { struct sock *sk = sock->sk; @@ -1102,8 +1158,6 @@ static void xs_tcp_connect_worker(void *args) if (xprt->shutdown || !xprt_bound(xprt)) goto out; - dprintk("RPC: xs_tcp_connect_worker for xprt %p\n", xprt); - if (!xprt->sock) { /* start from scratch */ if ((err = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &sock)) < 0) { @@ -1119,6 +1173,9 @@ static void xs_tcp_connect_worker(void *args) /* "close" the socket, preserving the local port */ xs_tcp_reuse_connection(xprt); + dprintk("RPC: worker connecting xprt %p to address: %s\n", + xprt, xs_print_peer_address(xprt, RPC_DISPLAY_ALL)); + if (!xprt->inet) { struct sock *sk = sock->sk; @@ -1260,6 +1317,7 @@ static void xs_tcp_print_stats(struct rpc_xprt *xprt, struct seq_file *seq) static struct rpc_xprt_ops xs_udp_ops = { .set_buffer_size = xs_udp_set_buffer_size, + .print_addr = xs_print_peer_address, .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, .rpcbind = rpc_getport, @@ -1277,6 +1335,7 @@ static struct rpc_xprt_ops xs_udp_ops = { }; static struct rpc_xprt_ops xs_tcp_ops = { + .print_addr = xs_print_peer_address, .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, .rpcbind = rpc_getport, @@ -1301,8 +1360,6 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to) { size_t slot_table_size; - dprintk("RPC: setting up udp-ipv4 transport...\n"); - xprt->max_reqs = xprt_udp_slot_table_entries; slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]); xprt->slot = kzalloc(slot_table_size, GFP_KERNEL); @@ -1332,6 +1389,10 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to) else xprt_set_timeout(&xprt->timeout, 5, 5 * HZ); + xs_format_peer_addresses(xprt); + dprintk("RPC: set up transport to address %s\n", + xs_print_peer_address(xprt, RPC_DISPLAY_ALL)); + return 0; } @@ -1345,8 +1406,6 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to) { size_t slot_table_size; - dprintk("RPC: setting up tcp-ipv4 transport...\n"); - xprt->max_reqs = xprt_tcp_slot_table_entries; slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]); xprt->slot = kzalloc(slot_table_size, GFP_KERNEL); @@ -1375,5 +1434,9 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to) else xprt_set_timeout(&xprt->timeout, 2, 60 * HZ); + xs_format_peer_addresses(xprt); + dprintk("RPC: set up transport to address %s\n", + xs_print_peer_address(xprt, RPC_DISPLAY_ALL)); + return 0; } |