lsfd: add methods to the L4 abstract layer for hidding differences in L3 protocols

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/misc-utils/lsfd-sock-xinfo.c b/misc-utils/lsfd-sock-xinfo.c
index 86291ea99ef7bf93a932a1fdb744ba6bbf64f1ac..c0eee362a94d8db8bf0bf1fccd1f00ec2cf0ed67 100644 (file)
--- a/misc-utils/lsfd-sock-xinfo.c
+++ b/misc-utils/lsfd-sock-xinfo.c
@@ -447,12 +447,17 @@ struct l4_xinfo {
        struct inet_xinfo inet;
 };
 
+enum l4_side { L4_LOCAL, L4_REMOTE };
+
 struct l4_xinfo_class {
        struct sock_xinfo_class sock;
        struct sock_xinfo *(*scan_line)(const struct sock_xinfo_class *,
                                        char *,
                                        ino_t,
                                        enum sysfs_byteorder);
+       void * (*get_addr)(struct l4_xinfo *, enum l4_side);
+       bool (*is_any_addr)(void *);
+       int family;
 };
 
 /*
@@ -641,6 +646,18 @@ static struct sock_xinfo *tcp_xinfo_scan_line(const struct sock_xinfo_class *cla
        return sock;
 }
 
+static void *tcp_xinfo_get_addr(struct l4_xinfo *l4, enum l4_side side)
+{
+       return (side == L4_LOCAL)
+               ? &l4->inet.local_addr
+               : &l4->inet.remote_addr;
+}
+
+static bool tcp_xinfo_is_any_addr(void *addr)
+{
+       return ((struct in_addr *)addr)->s_addr == INADDR_ANY;
+}
+
 define_fill_column_func(tcp, TCP)
 static const struct l4_xinfo_class tcp_xinfo_class = {
        .sock = {
@@ -652,6 +669,9 @@ static const struct l4_xinfo_class tcp_xinfo_class = {
                .free = NULL,
        },
        .scan_line = tcp_xinfo_scan_line,
+       .get_addr = tcp_xinfo_get_addr,
+       .is_any_addr = tcp_xinfo_is_any_addr,
+       .family = AF_INET,
 };
 
 static bool L4_verify_initial_line(const char *line)
@@ -746,6 +766,9 @@ static const struct l4_xinfo_class udp_xinfo_class = {
                .free = NULL,
        },
        .scan_line = tcp_xinfo_scan_line,
+       .get_addr = tcp_xinfo_get_addr,
+       .is_any_addr = tcp_xinfo_is_any_addr,
+       .family = AF_INET,
 };
 
 static void load_xinfo_from_proc_udp(ino_t netns_inode)