Merge branch 'net-next-2025-02-04--06-00' into HEAD

# Conflicts:
#	drivers/firmware/cirrus/Kconfig
#	lib/Kconfig.debug

Documentation/netlink/genetlink-c.yaml

@@ -14,9 +14,10 @@ $defs:
     pattern: ^[0-9A-Za-z_-]+( - 1)?$
     minimum: 0
   len-or-limit:
-    # literal int or limit based on fixed-width type e.g. u8-min, u16-max, etc.
+    # literal int, const name, or limit based on fixed-width type
+    # e.g. u8-min, u16-max, etc.
     type: [ string, integer ]
-    pattern: ^[su](8|16|32|64)-(min|max)$
+    pattern: ^[0-9A-Za-z_-]+$
     minimum: 0
 
 # Schema for specs

Documentation/netlink/genetlink-legacy.yaml

@@ -14,9 +14,10 @@ $defs:
     pattern: ^[0-9A-Za-z_-]+( - 1)?$
     minimum: 0
   len-or-limit:
-    # literal int or limit based on fixed-width type e.g. u8-min, u16-max, etc.
+    # literal int, const name, or limit based on fixed-width type
+    # e.g. u8-min, u16-max, etc.
     type: [ string, integer ]
-    pattern: ^[su](8|16|32|64)-(min|max)$
+    pattern: ^[0-9A-Za-z_-]+$
     minimum: 0
 
 # Schema for specs

Documentation/netlink/genetlink.yaml

@@ -14,9 +14,10 @@ $defs:
     pattern: ^[0-9A-Za-z_-]+( - 1)?$
     minimum: 0
   len-or-limit:
-    # literal int or limit based on fixed-width type e.g. u8-min, u16-max, etc.
+    # literal int, const name, or limit based on fixed-width type
+    # e.g. u8-min, u16-max, etc.
     type: [ string, integer ]
-    pattern: ^[su](8|16|32|64)-(min|max)$
+    pattern: ^[0-9A-Za-z_-]+$
     minimum: 0
 
 # Schema for specs

Documentation/netlink/specs/netdev.yaml

@@ -711,6 +711,18 @@ operations:
             - defer-hard-irqs
             - gro-flush-timeout
             - irq-suspend-timeout
+    -
+      name: bind-tx
+      doc: Bind dmabuf to netdev for TX
+      attribute-set: dmabuf
+      do:
+        request:
+          attributes:
+            - ifindex
+            - fd
+        reply:
+          attributes:
+            - id
 
 kernel-family:
   headers: [ "linux/list.h"]

Documentation/networking/devlink/ice.rst

@@ -69,6 +69,17 @@ Parameters
 
        To verify that value has been set:
        $ devlink dev param show pci/0000:16:00.0 name tx_scheduling_layers
+   * - ``msix_vec_per_pf_max``
+     - driverinit
+     - Set the max MSI-X that can be used by the PF, rest can be utilized for
+       SRIOV. The range is from min value set in msix_vec_per_pf_min to
+       2k/number of ports.
+   * - ``msix_vec_per_pf_min``
+     - driverinit
+     - Set the min MSI-X that will be used by the PF. This value inform how many
+       MSI-X will be allocated statically. The range is from 2 to value set
+       in msix_vec_per_pf_max.
+
 .. list-table:: Driver specific parameters implemented
     :widths: 5 5 90
 

Documentation/networking/devmem.rst

@@ -62,15 +62,15 @@ More Info
     https://lore.kernel.org/netdev/[email protected]/
 
 
-Interface
-=========
+RX Interface
+============
 
 
 Example
 -------
 
-tools/testing/selftests/net/ncdevmem.c:do_server shows an example of setting up
-the RX path of this API.
+./tools/testing/selftests/drivers/net/hw/ncdevmem:do_server shows an example of
+setting up the RX path of this API.
 
 
 NIC Setup
@@ -235,6 +235,142 @@ can be less than the tokens provided by the user in case of:
 (a) an internal kernel leak bug.
 (b) the user passed more than 1024 frags.
 
+TX Interface
+============
+
+
+Example
+-------
+
+./tools/testing/selftests/drivers/net/hw/ncdevmem:do_client shows an example of
+setting up the TX path of this API.
+
+
+NIC Setup
+---------
+
+The user must bind a TX dmabuf to a given NIC using the netlink API::
+
+        struct netdev_bind_tx_req *req = NULL;
+        struct netdev_bind_tx_rsp *rsp = NULL;
+        struct ynl_error yerr;
+
+        *ys = ynl_sock_create(&ynl_netdev_family, &yerr);
+
+        req = netdev_bind_tx_req_alloc();
+        netdev_bind_tx_req_set_ifindex(req, ifindex);
+        netdev_bind_tx_req_set_fd(req, dmabuf_fd);
+
+        rsp = netdev_bind_tx(*ys, req);
+
+        tx_dmabuf_id = rsp->id;
+
+
+The netlink API returns a dmabuf_id: a unique ID that refers to this dmabuf
+that has been bound.
+
+The user can unbind the dmabuf from the netdevice by closing the netlink socket
+that established the binding. We do this so that the binding is automatically
+unbound even if the userspace process crashes.
+
+Note that any reasonably well-behaved dmabuf from any exporter should work with
+devmem TCP, even if the dmabuf is not actually backed by devmem. An example of
+this is udmabuf, which wraps user memory (non-devmem) in a dmabuf.
+
+Socket Setup
+------------
+
+The user application must use MSG_ZEROCOPY flag when sending devmem TCP. Devmem
+cannot be copied by the kernel, so the semantics of the devmem TX are similar
+to the semantics of MSG_ZEROCOPY.
+
+	ret = setsockopt(socket_fd, SOL_SOCKET, SO_ZEROCOPY, &opt, sizeof(opt));
+
+Sending data
+--------------
+
+Devmem data is sent using the SCM_DEVMEM_DMABUF cmsg.
+
+The user should create a msghdr where,
+
+iov_base is set to the offset into the dmabuf to start sending from.
+iov_len is set to the number of bytes to be sent from the dmabuf.
+
+The user passes the dma-buf id to send from via the dmabuf_tx_cmsg.dmabuf_id.
+
+The example below sends 1024 bytes from offset 100 into the dmabuf, and 2048
+from offset 2000 into the dmabuf. The dmabuf to send from is tx_dmabuf_id::
+
+       char ctrl_data[CMSG_SPACE(sizeof(struct dmabuf_tx_cmsg))];
+       struct dmabuf_tx_cmsg ddmabuf;
+       struct msghdr msg = {};
+       struct cmsghdr *cmsg;
+       struct iovec iov[2];
+
+       iov[0].iov_base = (void*)100;
+       iov[0].iov_len = 1024;
+       iov[1].iov_base = (void*)2000;
+       iov[1].iov_len = 2048;
+
+       msg.msg_iov = iov;
+       msg.msg_iovlen = 2;
+
+       msg.msg_control = ctrl_data;
+       msg.msg_controllen = sizeof(ctrl_data);
+
+       cmsg = CMSG_FIRSTHDR(&msg);
+       cmsg->cmsg_level = SOL_SOCKET;
+       cmsg->cmsg_type = SCM_DEVMEM_DMABUF;
+       cmsg->cmsg_len = CMSG_LEN(sizeof(struct dmabuf_tx_cmsg));
+
+       ddmabuf.dmabuf_id = tx_dmabuf_id;
+
+       *((struct dmabuf_tx_cmsg *)CMSG_DATA(cmsg)) = ddmabuf;
+
+       sendmsg(socket_fd, &msg, MSG_ZEROCOPY);
+
+
+Reusing TX dmabufs
+------------------
+
+Similar to MSG_ZEROCOPY with regular memory, the user should not modify the
+contents of the dma-buf while a send operation is in progress. This is because
+the kernel does not keep a copy of the dmabuf contents. Instead, the kernel
+will pin and send data from the buffer available to the userspace.
+
+Just as in MSG_ZEROCOPY, the kernel notifies the userspace of send completions
+using MSG_ERRQUEUE::
+
+        int64_t tstop = gettimeofday_ms() + waittime_ms;
+        char control[CMSG_SPACE(100)] = {};
+        struct sock_extended_err *serr;
+        struct msghdr msg = {};
+        struct cmsghdr *cm;
+        int retries = 10;
+        __u32 hi, lo;
+
+        msg.msg_control = control;
+        msg.msg_controllen = sizeof(control);
+
+        while (gettimeofday_ms() < tstop) {
+                if (!do_poll(fd)) continue;
+
+                ret = recvmsg(fd, &msg, MSG_ERRQUEUE);
+
+                for (cm = CMSG_FIRSTHDR(&msg); cm; cm = CMSG_NXTHDR(&msg, cm)) {
+                        serr = (void *)CMSG_DATA(cm);
+
+                        hi = serr->ee_data;
+                        lo = serr->ee_info;
+
+                        fprintf(stdout, "tx complete [%d,%d]\n", lo, hi);
+                }
+        }
+
+After the associated sendmsg has been completed, the dmabuf can be reused by
+the userspace.
+
+
 Implementation & Caveats
 ========================
 

Documentation/networking/iso15765-2.rst

@@ -369,8 +369,8 @@ to their default.
 
   addr.can_family = AF_CAN;
   addr.can_ifindex = if_nametoindex("can0");
-  addr.tp.tx_id = 0x18DA42F1 | CAN_EFF_FLAG;
-  addr.tp.rx_id = 0x18DAF142 | CAN_EFF_FLAG;
+  addr.can_addr.tp.tx_id = 0x18DA42F1 | CAN_EFF_FLAG;
+  addr.can_addr.tp.rx_id = 0x18DAF142 | CAN_EFF_FLAG;
 
   ret = bind(s, (struct sockaddr *)&addr, sizeof(addr));
   if (ret < 0)

MAINTAINERS

@@ -16462,6 +16462,22 @@ F:	include/net/dsa.h
 F:	net/dsa/
 F:	tools/testing/selftests/drivers/net/dsa/
 
+NETWORKING [ETHTOOL]
+M:	Andrew Lunn <[email protected]>
+M:	Jakub Kicinski <[email protected]>
+F:	Documentation/netlink/specs/ethtool.yaml
+F:	Documentation/networking/ethtool-netlink.rst
+F:	include/linux/ethtool*
+F:	include/uapi/linux/ethtool*
+F:	net/ethtool/
+F:	tools/testing/selftests/drivers/net/*/ethtool*
+
+NETWORKING [ETHTOOL CABLE TEST]
+M:	Andrew Lunn <[email protected]>
+F:	net/ethtool/cabletest.c
+F:	tools/testing/selftests/drivers/net/*/ethtool*
+K:	start_cable_test
+
 NETWORKING [GENERAL]
 M:	"David S. Miller" <[email protected]>
 M:	Eric Dumazet <[email protected]>
@@ -16621,6 +16637,7 @@ F:	tools/testing/selftests/net/mptcp/
 NETWORKING [TCP]
 M:	Eric Dumazet <[email protected]>
 M:	Neal Cardwell <[email protected]>
+R:	Kuniyuki Iwashima <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	Documentation/networking/net_cachelines/tcp_sock.rst
@@ -16648,6 +16665,31 @@ F:	include/net/tls.h
 F:	include/uapi/linux/tls.h
 F:	net/tls/*
 
+NETWORKING [SOCKETS]
+M:	Eric Dumazet <[email protected]>
+M:	Kuniyuki Iwashima <[email protected]>
+M:	Paolo Abeni <[email protected]>
+M:	Willem de Bruijn <[email protected]>
+S:	Maintained
+F:	include/linux/sock_diag.h
+F:	include/linux/socket.h
+F:	include/linux/sockptr.h
+F:	include/net/sock.h
+F:	include/net/sock_reuseport.h
+F:	include/uapi/linux/socket.h
+F:	net/core/*sock*
+F:	net/core/scm.c
+F:	net/socket.c
+
+NETWORKING [UNIX SOCKETS]
+M:	Kuniyuki Iwashima <[email protected]>
+S:	Maintained
+F:	include/net/af_unix.h
+F:	include/net/netns/unix.h
+F:	include/uapi/linux/unix_diag.h
+F:	net/unix/
+F:	tools/testing/selftests/net/af_unix/
+
 NETXEN (1/10) GbE SUPPORT
 M:	Manish Chopra <[email protected]>
 M:	Rahul Verma <[email protected]>
@@ -17713,6 +17755,7 @@ L:	[email protected]
 L:	[email protected]
 S:	Maintained
 W:	http://openvswitch.org
+F:	Documentation/networking/openvswitch.rst
 F:	include/uapi/linux/openvswitch.h
 F:	net/openvswitch/
 F:	tools/testing/selftests/net/openvswitch/

drivers/firmware/cirrus/Kconfig

@@ -12,7 +12,6 @@ config FW_CS_DSP_KUNIT_TEST_UTILS
 config FW_CS_DSP_KUNIT_TEST
 	tristate "KUnit tests for Cirrus Logic cs_dsp" if !KUNIT_ALL_TESTS
 	depends on KUNIT && REGMAP
-	default KUNIT_ALL_TESTS
 	select FW_CS_DSP
 	select FW_CS_DSP_KUNIT_TEST_UTILS
 	help

drivers/infiniband/hw/irdma/hw.c

@@ -498,8 +498,6 @@ static int irdma_save_msix_info(struct irdma_pci_f *rf)
 	iw_qvlist->num_vectors = rf->msix_count;
 	if (rf->msix_count <= num_online_cpus())
 		rf->msix_shared = true;
-	else if (rf->msix_count > num_online_cpus() + 1)
-		rf->msix_count = num_online_cpus() + 1;
 
 	pmsix = rf->msix_entries;
 	for (i = 0, ceq_idx = 0; i < rf->msix_count; i++, iw_qvinfo++) {