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authorFrancesco Fusco <ffusco@redhat.com>2013-09-24 17:43:09 +0400
committerDavid S. Miller <davem@davemloft.net>2013-09-29 02:21:52 +0400
commitaa6615814533c634190019ee3a5b10490026d545 (patch)
tree08543d020bd7e2500046143440d58cd031f9754c /include/net/inet_sock.h
parentf02db315b8d888570cb0d4496cfbb7e4acb047cb (diff)
downloadlinux-aa6615814533c634190019ee3a5b10490026d545.tar.xz
ipv4: processing ancillary IP_TOS or IP_TTL
If IP_TOS or IP_TTL are specified as ancillary data, then sendmsg() sends out packets with the specified TTL or TOS overriding the socket values specified with the traditional setsockopt(). The struct inet_cork stores the values of TOS, TTL and priority that are passed through the struct ipcm_cookie. If there are user-specified TOS (tos != -1) or TTL (ttl != 0) in the struct ipcm_cookie, these values are used to override the per-socket values. In case of TOS also the priority is changed accordingly. Two helper functions get_rttos and get_rtconn_flags are defined to take into account the presence of a user specified TOS value when computing RT_TOS and RT_CONN_FLAGS. Signed-off-by: Francesco Fusco <ffusco@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_sock.h')
-rw-r--r--include/net/inet_sock.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 636d203727a2..f3141773c14d 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -103,6 +103,9 @@ struct inet_cork {
int length; /* Total length of all frames */
struct dst_entry *dst;
u8 tx_flags;
+ __u8 ttl;
+ __s16 tos;
+ char priority;
};
struct inet_cork_full {