Extern or forward variable declaration at include/linux/net.h, line 32 References: drivers/staging/lustre/lustre/llite/file.c, line 1253 drivers/staging/lustre/lustre/llite/llite_internal.h, line 847 drivers/staging/lustre/lustre/llite/llite_internal.h, line 900 fs/nfs/file.c, line 185 include/linux/net.h, line 32 include/linux/net.h, line 186 include/linux/skbuff.h, line 239 include/linux/skbuff.h, line 2959 include/linux/skbuff.h, line 2962 include/linux/skbuff.h, line 2965 include/net/tcp.h, line 365 net/core/skbuff.c, line 1851 net/core/skbuff.c, line 1882 net/core/skbuff.c, line 1916 net/core/skbuff.c, line 1965 net/core/skbuff.c, line 1990 net/core/skbuff.c, line 1993 net/ipv4/tcp.c, line 313 net/ipv4/tcp.c, line 719 net/kcm/kcmsock.c, line 1465 net/kcm/kcmsock.c, line 1478 net/socket.c, line 132 net/socket.c, line 771 net/unix/af_unix.c, line 650 net/unix/af_unix.c, line 2259 net/unix/af_unix.c, line 2491 net/unix/af_unix.c, line 2515