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Diffstat (limited to 'net/sunrpc/xprtsock.c')
-rw-r--r--net/sunrpc/xprtsock.c108
1 files changed, 91 insertions, 17 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 897bdd982315..9b62923a9c06 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)
@@ -295,7 +336,7 @@ static int xs_udp_send_request(struct rpc_task *task)
req->rq_xtime = jiffies;
status = xs_sendpages(xprt->sock, (struct sockaddr *) &xprt->addr,
- sizeof(xprt->addr), xdr, req->rq_bytes_sent);
+ xprt->addrlen, xdr, req->rq_bytes_sent);
dprintk("RPC: xs_udp_send_request(%u) = %d\n",
xdr->len - req->rq_bytes_sent, status);
@@ -485,6 +526,7 @@ static void xs_destroy(struct rpc_xprt *xprt)
xprt_disconnect(xprt);
xs_close(xprt);
+ xs_free_peer_addresses(xprt);
kfree(xprt->slot);
}
@@ -960,6 +1002,19 @@ 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
@@ -967,8 +1022,11 @@ static unsigned short xs_get_random_port(void)
*/
static void xs_set_port(struct rpc_xprt *xprt, unsigned short port)
{
+ struct sockaddr_in *sap = (struct sockaddr_in *) &xprt->addr;
+
dprintk("RPC: setting port for xprt %p to %u\n", xprt, port);
- xprt->addr.sin_port = htons(port);
+
+ sap->sin_port = htons(port);
}
static int xs_bindresvport(struct rpc_xprt *xprt, struct socket *sock)
@@ -1011,11 +1069,9 @@ static void xs_udp_connect_worker(void *args)
struct socket *sock = xprt->sock;
int err, status = -EIO;
- if (xprt->shutdown || xprt->addr.sin_port == 0)
+ 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);
@@ -1029,6 +1085,9 @@ 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;
@@ -1094,11 +1153,9 @@ static void xs_tcp_connect_worker(void *args)
struct socket *sock = xprt->sock;
int err, status = -EIO;
- if (xprt->shutdown || xprt->addr.sin_port == 0)
+ 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) {
@@ -1114,6 +1171,9 @@ 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;
@@ -1147,7 +1207,7 @@ static void xs_tcp_connect_worker(void *args)
xprt->stat.connect_count++;
xprt->stat.connect_start = jiffies;
status = kernel_connect(sock, (struct sockaddr *) &xprt->addr,
- sizeof(xprt->addr), O_NONBLOCK);
+ xprt->addrlen, O_NONBLOCK);
dprintk("RPC: %p connect status %d connected %d sock state %d\n",
xprt, -status, xprt_connected(xprt), sock->sk->sk_state);
if (status < 0) {
@@ -1255,8 +1315,10 @@ 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,
.set_port = xs_set_port,
.connect = xs_connect,
.buf_alloc = rpc_malloc,
@@ -1271,8 +1333,10 @@ 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,
.set_port = xs_set_port,
.connect = xs_connect,
.buf_alloc = rpc_malloc,
@@ -1293,8 +1357,7 @@ static struct rpc_xprt_ops xs_tcp_ops = {
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");
+ struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr;
xprt->max_reqs = xprt_udp_slot_table_entries;
slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]);
@@ -1302,10 +1365,12 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to)
if (xprt->slot == NULL)
return -ENOMEM;
- xprt->prot = IPPROTO_UDP;
+ if (ntohs(addr->sin_port != 0))
+ xprt_set_bound(xprt);
xprt->port = xs_get_random_port();
+
+ xprt->prot = IPPROTO_UDP;
xprt->tsh_size = 0;
- xprt->resvport = capable(CAP_NET_BIND_SERVICE) ? 1 : 0;
/* XXX: header size can vary due to auth type, IPv6, etc. */
xprt->max_payload = (1U << 16) - (MAX_HEADER << 3);
@@ -1322,6 +1387,10 @@ 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;
}
@@ -1334,8 +1403,7 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to)
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");
+ struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr;
xprt->max_reqs = xprt_tcp_slot_table_entries;
slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]);
@@ -1343,10 +1411,12 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to)
if (xprt->slot == NULL)
return -ENOMEM;
- xprt->prot = IPPROTO_TCP;
+ if (ntohs(addr->sin_port) != 0)
+ xprt_set_bound(xprt);
xprt->port = xs_get_random_port();
+
+ xprt->prot = IPPROTO_TCP;
xprt->tsh_size = sizeof(rpc_fraghdr) / sizeof(u32);
- xprt->resvport = capable(CAP_NET_BIND_SERVICE) ? 1 : 0;
xprt->max_payload = RPC_MAX_FRAGMENT_SIZE;
INIT_WORK(&xprt->connect_worker, xs_tcp_connect_worker, xprt);
@@ -1362,5 +1432,9 @@ 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;
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-31 06:58:31 +0000