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13dcba04ef
Update backports to the latest 6.6 point release. Signed-off-by: Robert Marko <robimarko@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
122 lines
3.9 KiB
Diff
122 lines
3.9 KiB
Diff
From 8dc94a59cfad70ec3a808add56718255eee39ab2 Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Sat, 29 Mar 2025 12:50:55 +0100
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Subject: [PATCH] backports: handle genlmsg_multicast_allns upstream backport
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changes
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Better handle genlmsg_multicast_allns upstream backport changes that
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dropped a flag to the function middle version. Use a backport function
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if backports project is tried to be built on older kernel version.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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---
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backport-include/net/genetlink.h | 11 +++++
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compat/Makefile | 3 +-
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compat/backport-genetlink.c | 60 +++++++++++++++++++++++
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3 files changed, 73 insertions(+), 1 deletion(-)
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--- a/backport-include/net/genetlink.h
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+++ b/backport-include/net/genetlink.h
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@@ -223,4 +223,15 @@ static inline int genlmsg_parse(const st
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}
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#endif /* LINUX_VERSION_IS_LESS(5,2,0) */
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+#if LINUX_VERSION_IN_RANGE(5,15,0,5,15,169) || \
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+ LINUX_VERSION_IN_RANGE(6,1,0,6,1,115) || \
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+ LINUX_VERSION_IN_RANGE(6,6,0,6,6,58)
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+#define genlmsg_multicast_allns LINUX_BACKPORT(genlmsg_multicast_allns)
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+int backport_genlmsg_multicast_allns(const struct genl_family *family,
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+ struct sk_buff *skb, u32 portid,
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+ unsigned int group);
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+#endif /* LINUX_VERSION_IN_RANGE(5,15,0,5,15,169) ||
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+ LINUX_VERSION_IN_RANGE(6,1,0,6,1,115) ||
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+ LINUX_VERSION_IN_RANGE(6,6,0,6,6,58) */
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+
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#endif /* __BACKPORT_NET_GENETLINK_H */
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--- a/compat/Makefile
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+++ b/compat/Makefile
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@@ -22,7 +22,8 @@ compat-$(CPTCFG_KERNEL_5_9) += backport-
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compat-$(CPTCFG_KERNEL_5_10) += backport-5.10.o
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compat-$(CPTCFG_KERNEL_5_11) += backport-5.11.o
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compat-$(CPTCFG_KERNEL_5_13) += backport-5.13.o
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-compat-$(CPTCFG_KERNEL_5_15) += backport-5.15.o
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+compat-$(CPTCFG_KERNEL_5_15) += backport-5.15.o backport-genetlink.o
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+compat-$(CPTCFG_KERNEL_6_1) += backport-genetlink.o
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compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/verify.o
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compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7.asn1.o
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--- a/compat/backport-genetlink.c
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+++ b/compat/backport-genetlink.c
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@@ -17,6 +17,7 @@
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#include <net/netlink.h>
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#include <net/sock.h>
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+#if LINUX_VERSION_IS_LESS(5,2,0)
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static const struct genl_family *find_family_real_ops(const struct genl_ops **ops)
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{
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const struct genl_family *family;
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@@ -415,3 +416,63 @@ int backport_genlmsg_multicast_allns(con
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return genlmsg_mcast(skb, portid, group);
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}
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EXPORT_SYMBOL_GPL(backport_genlmsg_multicast_allns);
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+#endif /* LINUX_VERSION_IS_LESS(5,2,0) */
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+
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+#if LINUX_VERSION_IN_RANGE(5,15,0,5,15,169) || \
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+ LINUX_VERSION_IN_RANGE(6,1,0,6,1,115) || \
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+ LINUX_VERSION_IN_RANGE(6,6,0,6,6,58)
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+static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group)
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+{
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+ struct sk_buff *tmp;
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+ struct net *net, *prev = NULL;
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+ bool delivered = false;
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+ int err;
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+
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+ rcu_read_lock();
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+ for_each_net_rcu(net) {
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+ if (prev) {
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+ tmp = skb_clone(skb, GFP_ATOMIC);
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+ if (!tmp) {
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+ err = -ENOMEM;
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+ goto error;
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+ }
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+ err = nlmsg_multicast(prev->genl_sock, tmp,
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+ portid, group, GFP_ATOMIC);
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+ if (!err)
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+ delivered = true;
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+ else if (err != -ESRCH)
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+ goto error;
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+ }
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+
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+ prev = net;
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+ }
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+ err = nlmsg_multicast(prev->genl_sock, skb, portid, group, GFP_ATOMIC);
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+
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+ rcu_read_unlock();
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+
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+ if (!err)
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+ delivered = true;
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+ else if (err != -ESRCH)
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+ return err;
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+ return delivered ? 0 : -ESRCH;
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+ error:
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+ rcu_read_unlock();
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+
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+ kfree_skb(skb);
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+ return err;
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+}
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+
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+int backport_genlmsg_multicast_allns(const struct genl_family *family,
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+ struct sk_buff *skb, u32 portid,
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+ unsigned int group)
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+{
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+ if (WARN_ON_ONCE(group >= family->n_mcgrps))
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+ return -EINVAL;
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+
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+ group = family->mcgrp_offset + group;
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+ return genlmsg_mcast(skb, portid, group);
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+}
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+EXPORT_SYMBOL_GPL(backport_genlmsg_multicast_allns);
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+#endif /* LINUX_VERSION_IN_RANGE(5,15,0,5,15,169) ||
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+ LINUX_VERSION_IN_RANGE(6,1,0,6,1,115) ||
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+ LINUX_VERSION_IN_RANGE(6,6,0,6,6,58) */
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