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| author | Florent Fourcot <florent.fourcot@enst-bretagne.fr> | 2014-01-17 17:15:04 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-19 17:12:31 -0800 |
| commit | 46e5f401762c639e38eea350d335c0f54ec2442f (patch) | |
| tree | 76f12d6f2425d05a13f09e27cd66c981b29312f4 | |
| parent | df3687ffc6653e4d32168338b4dee20c164ed7c9 (diff) | |
| download | linux-next-46e5f401762c639e38eea350d335c0f54ec2442f.tar.gz | |
ipv6: add a flag to get the flow label used remotly
This information is already available via IPV6_FLOWINFO
of IPV6_2292PKTOPTIONS, and them a filtering to get the flow label
information. But it is probably logical and easier for users to add this
here, and to control both sent/received flow label values with the
IPV6_FLOWLABEL_MGR option.
Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ipv6.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/in6.h | 1 | ||||
| -rw-r--r-- | net/ipv6/ip6_flowlabel.c | 8 | ||||
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 5 |
4 files changed, 14 insertions, 3 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 6d80f51897a5..78d3d5124918 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -253,7 +253,8 @@ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space, struct ipv6_txoptions *fopt); void fl6_free_socklist(struct sock *sk); int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); -int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq); +int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq, + int flags); int ip6_flowlabel_init(void); void ip6_flowlabel_cleanup(void); diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h index 02c0cd685a27..633b93cac1ed 100644 --- a/include/uapi/linux/in6.h +++ b/include/uapi/linux/in6.h @@ -86,6 +86,7 @@ struct in6_flowlabel_req { #define IPV6_FL_F_CREATE 1 #define IPV6_FL_F_EXCL 2 #define IPV6_FL_F_REFLECT 4 +#define IPV6_FL_F_REMOTE 8 #define IPV6_FL_S_NONE 0 #define IPV6_FL_S_EXCL 1 diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index 55823f187446..01bf2524c72a 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -481,11 +481,17 @@ static inline void fl_link(struct ipv6_pinfo *np, struct ipv6_fl_socklist *sfl, spin_unlock_bh(&ip6_sk_fl_lock); } -int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq) +int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq, + int flags) { struct ipv6_pinfo *np = inet6_sk(sk); struct ipv6_fl_socklist *sfl; + if (flags & IPV6_FL_F_REMOTE) { + freq->flr_label = np->rcv_flowinfo & IPV6_FLOWLABEL_MASK; + return 0; + } + if (np->repflow) { freq->flr_label = np->flow_label; return 0; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 2855b00ed49d..7024a874e901 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -1221,6 +1221,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, case IPV6_FLOWLABEL_MGR: { struct in6_flowlabel_req freq; + int flags; if (len < sizeof(freq)) return -EINVAL; @@ -1232,9 +1233,11 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, return -EINVAL; len = sizeof(freq); + flags = freq.flr_flags; + memset(&freq, 0, sizeof(freq)); - val = ipv6_flowlabel_opt_get(sk, &freq); + val = ipv6_flowlabel_opt_get(sk, &freq, flags); if (val < 0) return val; |