Add initial io_uring impl

fujita · Jan 10, 2025 · ac0f8c3 · ac0f8c3
1 parent 5a5f934
commit ac0f8c3
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Showing 5 changed files with 509 additions and 7 deletions.
diff --git a/doc/tgtadm.8.xml b/doc/tgtadm.8.xml
@@ -106,12 +106,13 @@ Possible device-types are:
       </varlistentry>
       <screen format="linespecific">
 Possible backend types are:
-    rdwr    : Use normal file I/O. This is the default for disk devices
-    aio     : Use Asynchronous I/O
-    rbd     : Use Ceph's distributed-storage RADOS Block Device
+    rdwr     : Use normal file I/O. This is the default for disk devices
+    aio      : Use Asynchronous I/O
+    io_uring : Use io_uring I/O
+    rbd      : Use Ceph's distributed-storage RADOS Block Device
 
-    sg      : Special backend type for passthrough devices
-    ssc     : Special backend type for tape emulation
+    sg       : Special backend type for passthrough devices
+    ssc      : Special backend type for tape emulation
       </screen>
 
       <varlistentry><term><option>--lld &lt;driver&gt; --op new --mode target --tid &lt;id&gt; --targetname &lt;name&gt;</option></term>

diff --git a/scripts/tgt.bashcomp.sh b/scripts/tgt.bashcomp.sh
@@ -162,7 +162,7 @@ _tgtadm() {
                 portal pt session sess connection conn account lld" -- "${cur}") )
             return 0;;
         --bstype|-E)
-            COMPREPLY=( $(compgen -W "rdwr aio rbd sg ssc" -- "${cur}") )
+            COMPREPLY=( $(compgen -W "rdwr aio rbd sg ssc io_uring" -- "${cur}") )
             return 0;;
         --bsoflags|-f)
             COMPREPLY=( $(compgen -W "direct sync" -- "${cur}") )

diff --git a/scripts/tgtd.spec b/scripts/tgtd.spec
@@ -8,7 +8,7 @@ License:        GPLv2
 URL:            http://stgt.sourceforge.net/
 Source0:        %{name}-%{version}-%{release}.tgz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-BuildRequires:  pkgconfig libibverbs-devel librdmacm-devel libxslt libaio-devel
+BuildRequires:  pkgconfig libibverbs-devel librdmacm-devel libxslt libaio-devel liburing
 %if %{defined suse_version}
 BuildRequires:  docbook-xsl-stylesheets
 Requires: aaa_base

diff --git a/usr/Makefile b/usr/Makefile
@@ -31,6 +31,11 @@ TGTD_OBJS += bs_aio.o
 LIBS += -laio
 endif
 
+ifneq ($(shell test -e /usr/include/sys/eventfd.h && test -e /usr/include/liburing.h && echo 1),)
+TGTD_OBJS += bs_io_uring.o
+LIBS += -luring
+endif
+
 ifneq ($(ISCSI_RDMA),)
 TGTD_OBJS += iscsi/iser.o iscsi/iser_text.o
 LIBS += -libverbs -lrdmacm