From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/net/dccp/ipv4.c | 62 ++++++++++++++-----------------
1 files changed, 28 insertions(+), 34 deletions(-)
diff --git a/kernel/net/dccp/ipv4.c b/kernel/net/dccp/ipv4.c
index 176bdda..f2a0a4e 100644
--- a/kernel/net/dccp/ipv4.c
+++ b/kernel/net/dccp/ipv4.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* net/dccp/ipv4.c
*
* An implementation of the DCCP protocol
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- *
- * 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.
*/
#include <linux/dccp.h>
@@ -134,6 +130,8 @@
* This unhashes the socket and releases the local port, if necessary.
*/
dccp_set_state(sk, DCCP_CLOSED);
+ if (!(sk->sk_userlocks & SOCK_BINDADDR_LOCK))
+ inet_reset_saddr(sk);
ip_rt_put(rt);
sk->sk_route_caps = 0;
inet->inet_dport = 0;
@@ -231,7 +229,7 @@
* check at all. A more general error queue to queue errors for later handling
* is probably better.
*/
-static void dccp_v4_err(struct sk_buff *skb, u32 info)
+static int dccp_v4_err(struct sk_buff *skb, u32 info)
{
const struct iphdr *iph = (struct iphdr *)skb->data;
const u8 offset = iph->ihl << 2;
@@ -245,12 +243,12 @@
int err;
struct net *net = dev_net(skb->dev);
- /* Only need dccph_dport & dccph_sport which are the first
- * 4 bytes in dccp header.
- * Our caller (icmp_socket_deliver()) already pulled 8 bytes for us.
- */
- BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_sport) > 8);
- BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_dport) > 8);
+ if (!pskb_may_pull(skb, offset + sizeof(*dh)))
+ return -EINVAL;
+ dh = (struct dccp_hdr *)(skb->data + offset);
+ if (!pskb_may_pull(skb, offset + __dccp_basic_hdr_len(dh)))
+ return -EINVAL;
+ iph = (struct iphdr *)skb->data;
dh = (struct dccp_hdr *)(skb->data + offset);
sk = __inet_lookup_established(net, &dccp_hashinfo,
@@ -259,16 +257,18 @@
inet_iif(skb), 0);
if (!sk) {
__ICMP_INC_STATS(net, ICMP_MIB_INERRORS);
- return;
+ return -ENOENT;
}
if (sk->sk_state == DCCP_TIME_WAIT) {
inet_twsk_put(inet_twsk(sk));
- return;
+ return 0;
}
seq = dccp_hdr_seq(dh);
- if (sk->sk_state == DCCP_NEW_SYN_RECV)
- return dccp_req_err(sk, seq);
+ if (sk->sk_state == DCCP_NEW_SYN_RECV) {
+ dccp_req_err(sk, seq);
+ return 0;
+ }
bh_lock_sock(sk);
/* If too many ICMPs get dropped on busy
@@ -357,6 +357,7 @@
out:
bh_unlock_sock(sk);
sock_put(sk);
+ return 0;
}
static inline __sum16 dccp_v4_csum_finish(struct sk_buff *skb,
@@ -428,7 +429,7 @@
if (__inet_inherit_port(sk, newsk) < 0)
goto put_and_exit;
- *own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
+ *own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash), NULL);
if (*own_req)
ireq->ireq_opt = NULL;
else
@@ -465,7 +466,7 @@
.fl4_dport = dccp_hdr(skb)->dccph_sport,
};
- security_skb_classify_flow(skb, flowi4_to_flowi(&fl4));
+ security_skb_classify_flow(skb, flowi4_to_flowi_common(&fl4));
rt = ip_route_output_flow(net, &fl4, sk);
if (IS_ERR(rt)) {
IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
@@ -496,7 +497,8 @@
rcu_read_lock();
err = ip_build_and_send_pkt(skb, sk, ireq->ir_loc_addr,
ireq->ir_rmt_addr,
- rcu_dereference(ireq->ireq_opt));
+ rcu_dereference(ireq->ireq_opt),
+ inet_sk(sk)->tos);
rcu_read_unlock();
err = net_xmit_eval(err);
}
@@ -538,7 +540,8 @@
local_bh_disable();
bh_lock_sock(ctl_sk);
err = ip_build_and_send_pkt(skb, ctl_sk,
- rxiph->daddr, rxiph->saddr, NULL);
+ rxiph->daddr, rxiph->saddr, NULL,
+ inet_sk(ctl_sk)->tos);
bh_unlock_sock(ctl_sk);
if (net_xmit_eval(err) == 0) {
@@ -695,6 +698,8 @@
/**
* dccp_invalid_packet - check for malformed packets
+ * @skb: Packet to validate
+ *
* Implements RFC 4340, 8.5: Step 1: Check header basics
* Packets that fail these checks are ignored and do not receive Resets.
*/
@@ -730,7 +735,7 @@
return 1;
}
/*
- * If P.Data Offset is too too large for packet, drop packet and return
+ * If P.Data Offset is too large for packet, drop packet and return
*/
if (!pskb_may_pull(skb, dccph_doff * sizeof(u32))) {
DCCP_WARN("P.Data Offset(%u) too large\n", dccph_doff);
@@ -872,7 +877,7 @@
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
- nf_reset(skb);
+ nf_reset_ct(skb);
return __sk_receive_skb(sk, skb, 1, dh->dccph_doff * 4, refcounted);
@@ -912,10 +917,6 @@
.getsockopt = ip_getsockopt,
.addr2sockaddr = inet_csk_addr2sockaddr,
.sockaddr_len = sizeof(struct sockaddr_in),
-#ifdef CONFIG_COMPAT
- .compat_setsockopt = compat_ip_setsockopt,
- .compat_getsockopt = compat_ip_getsockopt,
-#endif
};
static int dccp_v4_init_sock(struct sock *sk)
@@ -962,10 +963,6 @@
.rsk_prot = &dccp_request_sock_ops,
.twsk_prot = &dccp_timewait_sock_ops,
.h.hashinfo = &dccp_hashinfo,
-#ifdef CONFIG_COMPAT
- .compat_setsockopt = compat_dccp_setsockopt,
- .compat_getsockopt = compat_dccp_getsockopt,
-#endif
};
static const struct net_protocol dccp_v4_protocol = {
@@ -988,6 +985,7 @@
/* FIXME: work on tcp_poll to rename it to inet_csk_poll */
.poll = dccp_poll,
.ioctl = inet_ioctl,
+ .gettstamp = sock_gettstamp,
/* FIXME: work on inet_listen to rename it to sock_common_listen */
.listen = inet_dccp_listen,
.shutdown = inet_shutdown,
@@ -997,10 +995,6 @@
.recvmsg = sock_common_recvmsg,
.mmap = sock_no_mmap,
.sendpage = sock_no_sendpage,
-#ifdef CONFIG_COMPAT
- .compat_setsockopt = compat_sock_common_setsockopt,
- .compat_getsockopt = compat_sock_common_getsockopt,
-#endif
};
static struct inet_protosw dccp_v4_protosw = {
--
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