[PATCH net-next v6 2/7] rstreason: prepare for passive reset

2024-04-18 Thread Jason Xing
From: Jason Xing 

Adjust the parameter and support passing reason of reset which
is for now NOT_SPECIFIED. No functional changes.

Signed-off-by: Jason Xing 
---
 include/net/request_sock.h |  4 +++-
 net/dccp/ipv4.c| 10 ++
 net/dccp/ipv6.c| 10 ++
 net/dccp/minisocks.c   |  3 ++-
 net/ipv4/tcp_ipv4.c| 12 +++-
 net/ipv4/tcp_minisocks.c   |  3 ++-
 net/ipv6/tcp_ipv6.c| 15 +--
 net/mptcp/subflow.c|  8 +---
 8 files changed, 40 insertions(+), 25 deletions(-)

diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 004e651e6067..bdc737832da6 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -18,6 +18,7 @@
 #include 
 
 #include 
+#include 
 
 struct request_sock;
 struct sk_buff;
@@ -34,7 +35,8 @@ struct request_sock_ops {
void(*send_ack)(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req);
void(*send_reset)(const struct sock *sk,
- struct sk_buff *skb);
+ struct sk_buff *skb,
+ enum sk_rst_reason reason);
void(*destructor)(struct request_sock *req);
void(*syn_ack_timeout)(const struct request_sock *req);
 };
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 9fc9cea4c251..ff41bd6f99c3 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -24,6 +24,7 @@
 #include 
 #include 
 #include 
+#include 
 
 #include "ackvec.h"
 #include "ccid.h"
@@ -521,7 +522,8 @@ static int dccp_v4_send_response(const struct sock *sk, 
struct request_sock *req
return err;
 }
 
-static void dccp_v4_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb)
+static void dccp_v4_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb,
+  enum sk_rst_reason reason)
 {
int err;
const struct iphdr *rxiph;
@@ -706,7 +708,7 @@ int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
return 0;
 
 reset:
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
kfree_skb(skb);
return 0;
 }
@@ -869,7 +871,7 @@ static int dccp_v4_rcv(struct sk_buff *skb)
if (nsk == sk) {
reqsk_put(req);
} else if (dccp_child_process(sk, nsk, skb)) {
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, 
SK_RST_REASON_NOT_SPECIFIED);
goto discard_and_relse;
} else {
sock_put(sk);
@@ -909,7 +911,7 @@ static int dccp_v4_rcv(struct sk_buff *skb)
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
}
 
 discard_it:
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index c8ca703dc331..85f4b8fdbe5e 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -29,6 +29,7 @@
 #include 
 #include 
 #include 
+#include 
 
 #include "dccp.h"
 #include "ipv6.h"
@@ -256,7 +257,8 @@ static void dccp_v6_reqsk_destructor(struct request_sock 
*req)
kfree_skb(inet_rsk(req)->pktopts);
 }
 
-static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb)
+static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb,
+  enum sk_rst_reason reason)
 {
const struct ipv6hdr *rxip6h;
struct sk_buff *skb;
@@ -656,7 +658,7 @@ static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff 
*skb)
return 0;
 
 reset:
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
 discard:
if (opt_skb != NULL)
__kfree_skb(opt_skb);
@@ -762,7 +764,7 @@ static int dccp_v6_rcv(struct sk_buff *skb)
if (nsk == sk) {
reqsk_put(req);
} else if (dccp_child_process(sk, nsk, skb)) {
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, 
SK_RST_REASON_NOT_SPECIFIED);
goto discard_and_relse;
} else {
sock_put(sk);
@@ -801,7 +803,7 @@ static int dccp_v6_rcv(struct sk_buff *skb)
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
}
 
 discard_it:
diff --git a/net/dccp/minisocks.c 

[PATCH net-next v6 2/7] rstreason: prepare for passive reset

2024-04-17 Thread Jason Xing
From: Jason Xing 

Adjust the parameter and support passing reason of reset which
is for now NOT_SPECIFIED. No functional changes.

Signed-off-by: Jason Xing 
---
 include/net/request_sock.h |  4 +++-
 net/dccp/ipv4.c| 10 ++
 net/dccp/ipv6.c| 10 ++
 net/dccp/minisocks.c   |  3 ++-
 net/ipv4/tcp_ipv4.c| 12 +++-
 net/ipv4/tcp_minisocks.c   |  3 ++-
 net/ipv6/tcp_ipv6.c| 15 +--
 net/mptcp/subflow.c|  8 +---
 8 files changed, 40 insertions(+), 25 deletions(-)

diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 004e651e6067..bdc737832da6 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -18,6 +18,7 @@
 #include 
 
 #include 
+#include 
 
 struct request_sock;
 struct sk_buff;
@@ -34,7 +35,8 @@ struct request_sock_ops {
void(*send_ack)(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req);
void(*send_reset)(const struct sock *sk,
- struct sk_buff *skb);
+ struct sk_buff *skb,
+ enum sk_rst_reason reason);
void(*destructor)(struct request_sock *req);
void(*syn_ack_timeout)(const struct request_sock *req);
 };
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 9fc9cea4c251..ff41bd6f99c3 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -24,6 +24,7 @@
 #include 
 #include 
 #include 
+#include 
 
 #include "ackvec.h"
 #include "ccid.h"
@@ -521,7 +522,8 @@ static int dccp_v4_send_response(const struct sock *sk, 
struct request_sock *req
return err;
 }
 
-static void dccp_v4_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb)
+static void dccp_v4_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb,
+  enum sk_rst_reason reason)
 {
int err;
const struct iphdr *rxiph;
@@ -706,7 +708,7 @@ int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
return 0;
 
 reset:
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
kfree_skb(skb);
return 0;
 }
@@ -869,7 +871,7 @@ static int dccp_v4_rcv(struct sk_buff *skb)
if (nsk == sk) {
reqsk_put(req);
} else if (dccp_child_process(sk, nsk, skb)) {
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, 
SK_RST_REASON_NOT_SPECIFIED);
goto discard_and_relse;
} else {
sock_put(sk);
@@ -909,7 +911,7 @@ static int dccp_v4_rcv(struct sk_buff *skb)
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
-   dccp_v4_ctl_send_reset(sk, skb);
+   dccp_v4_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
}
 
 discard_it:
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index c8ca703dc331..85f4b8fdbe5e 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -29,6 +29,7 @@
 #include 
 #include 
 #include 
+#include 
 
 #include "dccp.h"
 #include "ipv6.h"
@@ -256,7 +257,8 @@ static void dccp_v6_reqsk_destructor(struct request_sock 
*req)
kfree_skb(inet_rsk(req)->pktopts);
 }
 
-static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb)
+static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff 
*rxskb,
+  enum sk_rst_reason reason)
 {
const struct ipv6hdr *rxip6h;
struct sk_buff *skb;
@@ -656,7 +658,7 @@ static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff 
*skb)
return 0;
 
 reset:
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
 discard:
if (opt_skb != NULL)
__kfree_skb(opt_skb);
@@ -762,7 +764,7 @@ static int dccp_v6_rcv(struct sk_buff *skb)
if (nsk == sk) {
reqsk_put(req);
} else if (dccp_child_process(sk, nsk, skb)) {
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, 
SK_RST_REASON_NOT_SPECIFIED);
goto discard_and_relse;
} else {
sock_put(sk);
@@ -801,7 +803,7 @@ static int dccp_v6_rcv(struct sk_buff *skb)
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
-   dccp_v6_ctl_send_reset(sk, skb);
+   dccp_v6_ctl_send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
}
 
 discard_it:
diff --git a/net/dccp/minisocks.c