[RFC] inet_opt space saving?

[Stephen Hemminger <shemminger@xxxxxxxx>]

It looks like there are lots of wasted bytes in the inet information
per socket. Does this look right? 

diff -Nru a/include/linux/ip.h b/include/linux/ip.h
--- a/include/linux/ip.h        2004-09-14 15:13:14 -07:00
+++ b/include/linux/ip.h        2004-09-14 15:13:14 -07:00
@@ -114,18 +114,18 @@
        __u16                   dport;          /* Destination port */
        __u16                   num;            /* Local port */
        __u32                   saddr;          /* Sending source */
-       int                     uc_ttl;         /* Unicast TTL */
-       int                     tos;            /* TOS */
-       unsigned                cmsg_flags;
        struct ip_options       *opt;
        __u16                   sport;          /* Source port */
-       unsigned char           hdrincl;        /* Include headers ? */
-       __u8                    mc_ttl;         /* Multicasting TTL */
-       __u8                    mc_loop;        /* Loopback */
-       __u8                    pmtudisc;
        __u16                   id;             /* ID counter for DF pkts */
-       unsigned                recverr : 1,
-                               freebind : 1;
+       __s16                   uc_ttl;         /* Unicast TTL */
+       __u8                    mc_ttl;         /* Multicasting TTL */
+       __u8                    tos;            /* TOS */
+       unsigned                mc_loop: 1,     /* Loopback */
+                               hdrincl: 1,     /* Include headers ? */
+                               recverr: 1,
+                               freebind: 1,
+                               cmsg_flags: 4,
+                               pmtudisc: 2;
        int                     mc_index;       /* Multicast device index */
        __u32                   mc_addr;
        struct ip_mc_socklist   *mc_list;       /* Group array */