summaryrefslogtreecommitdiff
path: root/include/net/route.h
diff options
context:
space:
mode:
authorFrancesco Fusco <ffusco@redhat.com>2013-09-24 15:43:09 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-28 15:21:52 -0700
commitaa6615814533c634190019ee3a5b10490026d545 (patch)
tree08543d020bd7e2500046143440d58cd031f9754c /include/net/route.h
parentf02db315b8d888570cb0d4496cfbb7e4acb047cb (diff)
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/route.h')
-rw-r--r--include/net/route.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/route.h b/include/net/route.h
index 6f572ca66d25..0ad8e0102386 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -39,6 +39,7 @@
#define RTO_ONLINK 0x01
#define RT_CONN_FLAGS(sk) (RT_TOS(inet_sk(sk)->tos) | sock_flag(sk, SOCK_LOCALROUTE))
+#define RT_CONN_FLAGS_TOS(sk,tos) (RT_TOS(tos) | sock_flag(sk, SOCK_LOCALROUTE))
struct fib_nh;
struct fib_info;