diff options
| author | David S. Miller <davem@davemloft.net> | 2018-02-27 22:19:11 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-27 22:19:11 +0300 |
| commit | f4155eff1f27076467826cf9bf77723277ead2ec (patch) | |
| tree | 718bf38615de51b487304c660e2c0f4952409885 /include/uapi/linux/errqueue.h | |
| parent | c1de13bb9374ae6b8f4278add102fc33e94c463b (diff) | |
| parent | 6f3899e602b0f4ec3d62ff385bb805e7109defa4 (diff) | |
| download | linux-f4155eff1f27076467826cf9bf77723277ead2ec.tar.xz | |
Merge branch 'RDS-optimized-notification-for-zerocopy-completion'
Sowmini Varadhan says:
====================
RDS: optimized notification for zerocopy completion
Resending with acked-by additions: previous attempt does not show
up in Patchwork. This time with a new mail Message-Id.
RDS applications use predominantly request-response, transacation
based IPC, so that ingress and egress traffic are well-balanced,
and it is possible/desirable to reduce system-call overhead by
piggybacking the notifications for zerocopy completion response
with data.
Moreover, it has been pointed out that socket functions block
if sk_err is non-zero, thus if the RDS code does not plan/need
to use sk_error_queue path for completion notification, it
is preferable to remove the sk_errror_queue related paths in
RDS.
Both of these goals are implemented in this series.
v2: removed sk_error_queue support
v3: incorporated additional code review comments (details in each patch)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/errqueue.h')
| -rw-r--r-- | include/uapi/linux/errqueue.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/uapi/linux/errqueue.h b/include/uapi/linux/errqueue.h index 28812eda4209..dc64cfaf13da 100644 --- a/include/uapi/linux/errqueue.h +++ b/include/uapi/linux/errqueue.h @@ -20,13 +20,11 @@ struct sock_extended_err { #define SO_EE_ORIGIN_ICMP6 3 #define SO_EE_ORIGIN_TXSTATUS 4 #define SO_EE_ORIGIN_ZEROCOPY 5 -#define SO_EE_ORIGIN_ZCOOKIE 6 #define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS #define SO_EE_OFFENDER(ee) ((struct sockaddr*)((ee)+1)) #define SO_EE_CODE_ZEROCOPY_COPIED 1 -#define SO_EE_ORIGIN_MAX_ZCOOKIES 8 /** * struct scm_timestamping - timestamps exposed through cmsg |