netlink: fix setsockopt in mmap examples in documentation

The documentation for how to use netlink mmap interface is incorrect.
The calls to setsockopt() require an additional argument.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/netlink_mmap.txt b/Documentation/networking/netlink_mmap.txt
index b261229..c6af4ba 100644 (file)
--- a/Documentation/networking/netlink_mmap.txt
+++ b/Documentation/networking/netlink_mmap.txt
@@ -226,9 +226,9 @@ Ring setup:
        void *rx_ring, *tx_ring;
 
        /* Configure ring parameters */
-       if (setsockopt(fd, NETLINK_RX_RING, &req, sizeof(req)) < 0)
+       if (setsockopt(fd, SOL_NETLINK, NETLINK_RX_RING, &req, sizeof(req)) < 0)
                exit(1);
-       if (setsockopt(fd, NETLINK_TX_RING, &req, sizeof(req)) < 0)
+       if (setsockopt(fd, SOL_NETLINK, NETLINK_TX_RING, &req, sizeof(req)) < 0)
                exit(1)
 
        /* Calculate size of each individual ring */