From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/net/ip.h | 146 +++++++++++++++++++++++++++++++++++++-----------
1 files changed, 113 insertions(+), 33 deletions(-)
diff --git a/kernel/include/net/ip.h b/kernel/include/net/ip.h
index cd091d7..c7edd07 100644
--- a/kernel/include/net/ip.h
+++ b/kernel/include/net/ip.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
@@ -13,11 +14,6 @@
*
* Changes:
* Mike McLagan : Routing by source
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#ifndef _IP_H
#define _IP_H
@@ -27,6 +23,7 @@
#include <linux/in.h>
#include <linux/skbuff.h>
#include <linux/jhash.h>
+#include <linux/sockptr.h>
#include <net/inet_sock.h>
#include <net/route.h>
@@ -40,6 +37,10 @@
#define IPV4_MAX_PMTU 65535U /* RFC 2675, Section 5.1 */
#define IPV4_MIN_MTU 68 /* RFC 791 */
+
+extern unsigned int sysctl_fib_sync_mem;
+extern unsigned int sysctl_fib_sync_mem_min;
+extern unsigned int sysctl_fib_sync_mem_max;
struct sock;
@@ -56,6 +57,7 @@
#define IPSKB_DOREDIRECT BIT(5)
#define IPSKB_FRAG_PMTU BIT(6)
#define IPSKB_L3SLAVE BIT(7)
+#define IPSKB_MULTIPATH BIT(9)
u16 frag_max_size;
};
@@ -75,6 +77,7 @@
__be32 addr;
int oif;
struct ip_options_rcu *opt;
+ __u8 protocol;
__u8 ttl;
__s16 tos;
char priority;
@@ -91,9 +94,11 @@
{
ipcm_init(ipcm);
+ ipcm->sockc.mark = inet->sk.sk_mark;
ipcm->sockc.tsflags = inet->sk.sk_tsflags;
ipcm->oif = inet->sk.sk_bound_dev_if;
ipcm->addr = inet->inet_saddr;
+ ipcm->protocol = inet->inet_num;
}
#define IPCB(skb) ((struct inet_skb_parm*)((skb)->cb))
@@ -152,17 +157,56 @@
int ip_build_and_send_pkt(struct sk_buff *skb, const struct sock *sk,
__be32 saddr, __be32 daddr,
- struct ip_options_rcu *opt);
+ struct ip_options_rcu *opt, u8 tos);
int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
struct net_device *orig_dev);
void ip_list_rcv(struct list_head *head, struct packet_type *pt,
struct net_device *orig_dev);
int ip_local_deliver(struct sk_buff *skb);
+void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int proto);
int ip_mr_input(struct sk_buff *skb);
int ip_output(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
int (*output)(struct net *, struct sock *, struct sk_buff *));
+
+struct ip_fraglist_iter {
+ struct sk_buff *frag;
+ struct iphdr *iph;
+ int offset;
+ unsigned int hlen;
+};
+
+void ip_fraglist_init(struct sk_buff *skb, struct iphdr *iph,
+ unsigned int hlen, struct ip_fraglist_iter *iter);
+void ip_fraglist_prepare(struct sk_buff *skb, struct ip_fraglist_iter *iter);
+
+static inline struct sk_buff *ip_fraglist_next(struct ip_fraglist_iter *iter)
+{
+ struct sk_buff *skb = iter->frag;
+
+ iter->frag = skb->next;
+ skb_mark_not_on_list(skb);
+
+ return skb;
+}
+
+struct ip_frag_state {
+ bool DF;
+ unsigned int hlen;
+ unsigned int ll_rs;
+ unsigned int mtu;
+ unsigned int left;
+ int offset;
+ int ptr;
+ __be16 not_last_frag;
+};
+
+void ip_frag_init(struct sk_buff *skb, unsigned int hlen, unsigned int ll_rs,
+ unsigned int mtu, bool DF, struct ip_frag_state *state);
+struct sk_buff *ip_frag_next(struct sk_buff *skb,
+ struct ip_frag_state *state);
+
void ip_send_check(struct iphdr *ip);
int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
int ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
@@ -194,11 +238,7 @@
struct ipcm_cookie *ipc, struct rtable **rtp,
struct inet_cork *cork, unsigned int flags);
-static inline int ip_queue_xmit(struct sock *sk, struct sk_buff *skb,
- struct flowi *fl)
-{
- return __ip_queue_xmit(sk, skb, fl, inet_sk(sk)->tos);
-}
+int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl);
static inline struct sk_buff *ip_finish_skb(struct sock *sk, struct flowi4 *fl4)
{
@@ -243,7 +283,7 @@
const struct ip_options *sopt,
__be32 daddr, __be32 saddr,
const struct ip_reply_arg *arg,
- unsigned int len);
+ unsigned int len, u64 transmit_time);
#define IP_INC_STATS(net, field) SNMP_INC_STATS64((net)->mib.ip_statistics, field)
#define __IP_INC_STATS(net, field) __SNMP_INC_STATS64((net)->mib.ip_statistics, field)
@@ -302,11 +342,18 @@
void inet_get_local_port_range(struct net *net, int *low, int *high);
#ifdef CONFIG_SYSCTL
-static inline int inet_is_local_reserved_port(struct net *net, int port)
+static inline bool inet_is_local_reserved_port(struct net *net, unsigned short port)
{
if (!net->ipv4.sysctl_local_reserved_ports)
- return 0;
+ return false;
return test_bit(port, net->ipv4.sysctl_local_reserved_ports);
+}
+
+static inline bool inet_is_local_unbindable_port(struct net *net, unsigned short port)
+{
+ if (!net->ipv4.sysctl_local_unbindable_ports)
+ return false;
+ return test_bit(port, net->ipv4.sysctl_local_unbindable_ports);
}
static inline bool sysctl_dev_name_is_allowed(const char *name)
@@ -314,20 +361,25 @@
return strcmp(name, "default") != 0 && strcmp(name, "all") != 0;
}
-static inline int inet_prot_sock(struct net *net)
+static inline bool inet_port_requires_bind_service(struct net *net, unsigned short port)
{
- return net->ipv4.sysctl_ip_prot_sock;
+ return port < READ_ONCE(net->ipv4.sysctl_ip_prot_sock);
}
#else
-static inline int inet_is_local_reserved_port(struct net *net, int port)
+static inline bool inet_is_local_reserved_port(struct net *net, unsigned short port)
{
- return 0;
+ return false;
}
-static inline int inet_prot_sock(struct net *net)
+static inline bool inet_is_local_unbindable_port(struct net *net, unsigned short port)
{
- return PROT_SOCK;
+ return false;
+}
+
+static inline bool inet_port_requires_bind_service(struct net *net, unsigned short port)
+{
+ return port < PROT_SOCK;
}
#endif
@@ -343,7 +395,7 @@
void ip_static_sysctl_init(void);
#define IP4_REPLY_MARK(net, mark) \
- ((net)->ipv4.sysctl_fwmark_reflect ? (mark) : 0)
+ (READ_ONCE((net)->ipv4.sysctl_fwmark_reflect) ? (mark) : 0)
static inline bool ip_is_fragment(const struct iphdr *iph)
{
@@ -404,7 +456,7 @@
struct net *net = dev_net(dst->dev);
unsigned int mtu;
- if (net->ipv4.sysctl_ip_fwd_use_pmtu ||
+ if (READ_ONCE(net->ipv4.sysctl_ip_fwd_use_pmtu) ||
ip_mtu_locked(dst) ||
!forwarding)
return dst_mtu(dst);
@@ -432,8 +484,36 @@
return mtu - lwtunnel_headroom(skb_dst(skb)->lwtstate, mtu);
}
-int ip_metrics_convert(struct net *net, struct nlattr *fc_mx, int fc_mx_len,
- u32 *metrics);
+struct dst_metrics *ip_fib_metrics_init(struct net *net, struct nlattr *fc_mx,
+ int fc_mx_len,
+ struct netlink_ext_ack *extack);
+static inline void ip_fib_metrics_put(struct dst_metrics *fib_metrics)
+{
+ if (fib_metrics != &dst_default_metrics &&
+ refcount_dec_and_test(&fib_metrics->refcnt))
+ kfree(fib_metrics);
+}
+
+/* ipv4 and ipv6 both use refcounted metrics if it is not the default */
+static inline
+void ip_dst_init_metrics(struct dst_entry *dst, struct dst_metrics *fib_metrics)
+{
+ dst_init_metrics(dst, fib_metrics->metrics, true);
+
+ if (fib_metrics != &dst_default_metrics) {
+ dst->_metrics |= DST_METRICS_REFCOUNTED;
+ refcount_inc(&fib_metrics->refcnt);
+ }
+}
+
+static inline
+void ip_dst_metrics_put(struct dst_entry *dst)
+{
+ struct dst_metrics *p = (struct dst_metrics *)DST_METRICS_PTR(dst);
+
+ if (p != &dst_default_metrics && refcount_dec_and_test(&p->refcnt))
+ kfree(p);
+}
u32 ip_idents_reserve(u32 hash, int segs);
void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);
@@ -481,7 +561,7 @@
BUILD_BUG_ON(offsetof(typeof(flow->addrs), v4addrs.dst) !=
offsetof(typeof(flow->addrs), v4addrs.src) +
sizeof(flow->addrs.v4addrs.src));
- memcpy(&flow->addrs.v4addrs, &iph->saddr, sizeof(flow->addrs.v4addrs));
+ memcpy(&flow->addrs.v4addrs, &iph->addrs, sizeof(flow->addrs.v4addrs));
flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
}
@@ -654,9 +734,7 @@
int ip_options_compile(struct net *net, struct ip_options *opt,
struct sk_buff *skb);
int ip_options_get(struct net *net, struct ip_options_rcu **optp,
- unsigned char *data, int optlen);
-int ip_options_get_from_user(struct net *net, struct ip_options_rcu **optp,
- unsigned char __user *data, int optlen);
+ sockptr_t data, int optlen);
void ip_options_undo(struct ip_options *opt);
void ip_forward_options(struct sk_buff *skb);
int ip_options_rcv_srr(struct sk_buff *skb, struct net_device *dev);
@@ -670,14 +748,10 @@
struct sk_buff *skb, int tlen, int offset);
int ip_cmsg_send(struct sock *sk, struct msghdr *msg,
struct ipcm_cookie *ipc, bool allow_ipv6);
-int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
+int ip_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,
unsigned int optlen);
int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
int __user *optlen);
-int compat_ip_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, unsigned int optlen);
-int compat_ip_getsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int __user *optlen);
int ip_ra_control(struct sock *sk, unsigned char on,
void (*destructor)(struct sock *));
@@ -708,4 +782,10 @@
return likely(mtu >= IPV4_MIN_MTU);
}
+void ip_sock_set_freebind(struct sock *sk);
+int ip_sock_set_mtu_discover(struct sock *sk, int val);
+void ip_sock_set_pktinfo(struct sock *sk);
+void ip_sock_set_recverr(struct sock *sk);
+void ip_sock_set_tos(struct sock *sk, int val);
+
#endif /* _IP_H */
--
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