net/sunrpc/xprtsock.c

Source file repositories/reference/linux-study-clean/net/sunrpc/xprtsock.c

File Facts

System
Linux kernel
Corpus path
net/sunrpc/xprtsock.c
Extension
.c
Size
100335 bytes
Lines
3762
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

if (!(j & 31)) {
			if (j)
				dprintk("\n");
			dprintk("0x%04x ", j);
		}
		dprintk("%02x%02x%02x%02x ",
			buf[j], buf[j+1], buf[j+2], buf[j+3]);
	}
	dprintk("\n");
}
#else
static inline void xs_pktdump(char *msg, u32 *packet, unsigned int count)
{
	/* NOP */
}
#endif

static inline struct rpc_xprt *xprt_from_sock(struct sock *sk)
{
	return (struct rpc_xprt *) sk->sk_user_data;
}

static inline struct sockaddr *xs_addr(struct rpc_xprt *xprt)
{
	return (struct sockaddr *) &xprt->addr;
}

static inline struct sockaddr_un *xs_addr_un(struct rpc_xprt *xprt)
{
	return (struct sockaddr_un *) &xprt->addr;
}

static inline struct sockaddr_in *xs_addr_in(struct rpc_xprt *xprt)
{
	return (struct sockaddr_in *) &xprt->addr;
}

static inline struct sockaddr_in6 *xs_addr_in6(struct rpc_xprt *xprt)
{
	return (struct sockaddr_in6 *) &xprt->addr;
}

static void xs_format_common_peer_addresses(struct rpc_xprt *xprt)
{
	struct sockaddr *sap = xs_addr(xprt);
	struct sockaddr_in6 *sin6;
	struct sockaddr_in *sin;
	struct sockaddr_un *sun;
	char buf[128];

	switch (sap->sa_family) {
	case AF_LOCAL:
		sun = xs_addr_un(xprt);
		if (sun->sun_path[0]) {
			strscpy(buf, sun->sun_path, sizeof(buf));
		} else {
			buf[0] = '@';
			strscpy(buf+1, sun->sun_path+1, sizeof(buf)-1);
		}
		xprt->address_strings[RPC_DISPLAY_ADDR] =
						kstrdup(buf, GFP_KERNEL);
		break;
	case AF_INET:
		(void)rpc_ntop(sap, buf, sizeof(buf));
		xprt->address_strings[RPC_DISPLAY_ADDR] =
						kstrdup(buf, GFP_KERNEL);
		sin = xs_addr_in(xprt);
		snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
		break;
	case AF_INET6:
		(void)rpc_ntop(sap, buf, sizeof(buf));
		xprt->address_strings[RPC_DISPLAY_ADDR] =
						kstrdup(buf, GFP_KERNEL);
		sin6 = xs_addr_in6(xprt);
		snprintf(buf, sizeof(buf), "%pi6", &sin6->sin6_addr);
		break;
	default:
		BUG();
	}

	xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
}

static void xs_format_common_peer_ports(struct rpc_xprt *xprt)
{
	struct sockaddr *sap = xs_addr(xprt);
	char buf[128];

	snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
	xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);

Annotation

Implementation Notes