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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /include/net/smc.h
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'include/net/smc.h')
-rw-r--r--include/net/smc.h106
1 files changed, 106 insertions, 0 deletions
diff --git a/include/net/smc.h b/include/net/smc.h
new file mode 100644
index 000000000..a2bc3ab88
--- /dev/null
+++ b/include/net/smc.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ * Definitions for the SMC module (socket related)
+ *
+ * Copyright IBM Corp. 2016
+ *
+ * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
+ */
+#ifndef _SMC_H
+#define _SMC_H
+
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/dibs.h>
+
+struct tcp_sock;
+struct inet_request_sock;
+struct sock;
+
+#define SMC_MAX_PNETID_LEN 16 /* Max. length of PNET id */
+
+struct smc_hashinfo {
+ rwlock_t lock;
+ struct hlist_head ht;
+};
+
+/* SMCD/ISM device driver interface */
+#define ISM_RESERVED_VLANID 0x1FFF
+
+struct smcd_gid {
+ u64 gid;
+ u64 gid_ext;
+};
+
+struct smcd_dev {
+ struct dibs_dev *dibs;
+ struct list_head list;
+ spinlock_t lock;
+ struct list_head vlan;
+ struct workqueue_struct *event_wq;
+ u8 pnetid[SMC_MAX_PNETID_LEN];
+ bool pnetid_by_user;
+ struct list_head lgr_list;
+ spinlock_t lgr_lock;
+ atomic_t lgr_cnt;
+ wait_queue_head_t lgrs_deleted;
+ u8 going_away : 1;
+ struct smc_connection *conn[];
+};
+
+#define SMC_HS_CTRL_NAME_MAX 16
+
+enum {
+ /* ops can be inherit from init_net */
+ SMC_HS_CTRL_FLAG_INHERITABLE = 0x1,
+
+ SMC_HS_CTRL_ALL_FLAGS = SMC_HS_CTRL_FLAG_INHERITABLE,
+};
+
+struct smc_hs_ctrl {
+ /* private */
+
+ struct list_head list;
+ struct module *owner;
+
+ /* public */
+
+ /* unique name */
+ char name[SMC_HS_CTRL_NAME_MAX];
+ int flags;
+
+ /* Invoked before computing SMC option for SYN packets.
+ * We can control whether to set SMC options by returning various value.
+ * Return 0 to disable SMC, or return any other value to enable it.
+ */
+ int (*syn_option)(struct tcp_sock *tp);
+
+ /* Invoked before Set up SMC options for SYN-ACK packets
+ * We can control whether to respond SMC options by returning various
+ * value. Return 0 to disable SMC, or return any other value to enable
+ * it.
+ */
+ int (*synack_option)(const struct tcp_sock *tp,
+ struct inet_request_sock *ireq);
+};
+
+#if IS_ENABLED(CONFIG_SMC_HS_CTRL_BPF)
+#define smc_call_hsbpf(init_val, tp, func, ...) ({ \
+ typeof(init_val) __ret = (init_val); \
+ struct smc_hs_ctrl *ctrl; \
+ rcu_read_lock(); \
+ ctrl = rcu_dereference(sock_net((struct sock *)(tp))->smc.hs_ctrl); \
+ if (ctrl && ctrl->func) \
+ __ret = ctrl->func(tp, ##__VA_ARGS__); \
+ rcu_read_unlock(); \
+ __ret; \
+})
+#else
+#define smc_call_hsbpf(init_val, tp, ...) ({ (void)(tp); (init_val); })
+#endif /* CONFIG_SMC_HS_CTRL_BPF */
+
+#endif /* _SMC_H */