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| author |   Francesco Fusco <ffusco@redhat.com> | 2013-09-24 15:43:09 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-09-28 15:21:52 -0700 |
| commit | aa6615814533c634190019ee3a5b10490026d545 (patch) | |
| tree | 08543d020bd7e2500046143440d58cd031f9754c /include/net/route.h | |
| parent | ipv4: IP_TOS and IP_TTL can be specified as ancillary data (diff) | |
| download | linux-dev-aa6615814533c634190019ee3a5b10490026d545.tar.xz linux-dev-aa6615814533c634190019ee3a5b10490026d545.zip | |
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.h | 1 |
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; |