diff options
| author | Sridhar Samudrala <sridhar.samudrala@intel.com> | 2017-03-24 10:08:36 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-24 20:49:31 -0700 |
| commit | 6d4339028b350efbf87c61e6d9e113e5373545c9 (patch) | |
| tree | c80a83afc1d175816d95920e9ea185f4f5f96650 /net/core | |
| parent | bf3b9f6372c45b0fbf24d86b8794910d20170017 (diff) | |
| download | linux-6d4339028b350efbf87c61e6d9e113e5373545c9.tar.bz2 | |
net: Introduce SO_INCOMING_NAPI_ID
This socket option returns the NAPI ID associated with the queue on which
the last frame is received. This information can be used by the apps to
split the incoming flows among the threads based on the Rx queue on which
they are received.
If the NAPI ID actually represents a sender_cpu then the value is ignored
and 0 is returned.
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/sock.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 4b762f2a3552..1a58a9dc6888 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1328,6 +1328,18 @@ int sock_getsockopt(struct socket *sock, int level, int optname, goto lenout; } + +#ifdef CONFIG_NET_RX_BUSY_POLL + case SO_INCOMING_NAPI_ID: + v.val = READ_ONCE(sk->sk_napi_id); + + /* aggregate non-NAPI IDs down to 0 */ + if (v.val < MIN_NAPI_ID) + v.val = 0; + + break; +#endif + default: /* We implement the SO_SNDLOWAT etc to not be settable * (1003.1g 7). |