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* [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal"
@ 2021-07-25 13:41 Geliang Tang
  2021-07-25 13:50 ` Geliang Tang
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Geliang Tang @ 2021-07-25 13:41 UTC (permalink / raw)
  To: mptcp; +Cc: Geliang Tang

Paolo's patch (Squash-to: "mptcp: build ADD_ADDR/echo-ADD_ADDR option
according pm.add_signal") reverts back to a single 'addr' field in struct
mptcp_addr_info.

Then no need to change the argument of mptcp_pm_add_addr_signal and no
need to modify the code in mptcp_write_options now, the original code is
fine.

So this patch reverts back more code.

And the commit log needs to be updated:

'''
According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build
the ADD_ADDR/ADD_ADDR_ECHO option.

In mptcp_pm_add_addr_signal(), use opts->remote or opts->local to save the
announced ADD_ADDR or ADD_ADDR_ECHO address.
'''

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 net/mptcp/options.c  | 25 ++++++++++++-------------
 net/mptcp/pm.c       |  6 +++---
 net/mptcp/protocol.h |  2 +-
 3 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index eafdb9408f3a..cb29a5605776 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -668,7 +668,7 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
 	int len;
 
 	if (!mptcp_pm_should_add_signal(msk) ||
-	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, opts,
+	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &opts->addr,
 		    &echo, &port, &drop_other_suboptions))
 		return false;
 
@@ -692,8 +692,8 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
 						     msk->remote_key,
 						     &opts->addr);
 	}
-	pr_debug("addr_id=%d, addr_port=%d, ahmac=%llu, echo=%d",
-		 opts->addr.id, ntohs(opts->addr.port), opts->ahmac, echo);
+	pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d",
+		 opts->addr.id, opts->ahmac, echo, ntohs(opts->addr.port));
 
 	return true;
 }
@@ -1250,16 +1250,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 mp_capable_done:
 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
-		struct mptcp_addr_info *addr = &opts->addr;
 		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
 		u8 echo = MPTCP_ADDR_ECHO;
 
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
-		if (addr->family == AF_INET6)
+		if (opts->addr.family == AF_INET6)
 			len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
 #endif
 
-		if (addr->port)
+		if (opts->addr.port)
 			len += TCPOLEN_MPTCP_PORT_LEN;
 
 		if (opts->ahmac) {
@@ -1268,25 +1267,25 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 		}
 
 		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-				      len, echo, addr->id);
-		if (addr->family == AF_INET) {
-			memcpy((u8 *)ptr, (u8 *)&addr->addr.s_addr, 4);
+				      len, echo, opts->addr.id);
+		if (opts->addr.family == AF_INET) {
+			memcpy((u8 *)ptr, (u8 *)&opts->addr.addr.s_addr, 4);
 			ptr += 1;
 		}
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
-		else if (addr->family == AF_INET6) {
-			memcpy((u8 *)ptr, addr->addr6.s6_addr, 16);
+		else if (opts->addr.family == AF_INET6) {
+			memcpy((u8 *)ptr, opts->addr.addr6.s6_addr, 16);
 			ptr += 4;
 		}
 #endif
 
-		if (!addr->port) {
+		if (!opts->addr.port) {
 			if (opts->ahmac) {
 				put_unaligned_be64(opts->ahmac, ptr);
 				ptr += 2;
 			}
 		} else {
-			u16 port = ntohs(addr->port);
+			u16 port = ntohs(opts->addr.port);
 
 			if (opts->ahmac) {
 				u8 *bptr = (u8 *)ptr;
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 5fe3805af02a..781da0885f98 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -257,7 +257,7 @@ void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup)
 
 bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
 			      unsigned int opt_size, unsigned int remaining,
-			      struct mptcp_out_options *opts, bool *echo,
+			      struct mptcp_addr_info *saddr, bool *echo,
 			      bool *port, bool *drop_other_suboptions)
 {
 	int ret = false;
@@ -286,10 +286,10 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
 		goto out_unlock;
 
 	if (*echo) {
-		opts->addr = msk->pm.remote;
+		*saddr = msk->pm.remote;
 		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
 	} else {
-		opts->addr = msk->pm.local;
+		*saddr = msk->pm.local;
 		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
 	}
 	WRITE_ONCE(msk->pm.addr_signal, add_addr);
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index b54335857b6e..099e3e6a4c89 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -801,7 +801,7 @@ static inline int mptcp_rm_addr_len(const struct mptcp_rm_list *rm_list)
 
 bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
 			      unsigned int opt_size, unsigned int remaining,
-			      struct mptcp_out_options *opts, bool *echo,
+			      struct mptcp_addr_info *saddr, bool *echo,
 			      bool *port, bool *drop_other_suboptions);
 bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
 			     struct mptcp_rm_list *rm_list);
-- 
2.31.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal"
  2021-07-25 13:41 [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal" Geliang Tang
@ 2021-07-25 13:50 ` Geliang Tang
  2021-07-26  8:08 ` Paolo Abeni
  2021-07-27  0:31 ` Mat Martineau
  2 siblings, 0 replies; 4+ messages in thread
From: Geliang Tang @ 2021-07-25 13:50 UTC (permalink / raw)
  To: mptcp

Geliang Tang <geliangtang@gmail.com> 于2021年7月25日周日 下午9:41写道:
>
> Paolo's patch (Squash-to: "mptcp: build ADD_ADDR/echo-ADD_ADDR option
> according pm.add_signal") reverts back to a single 'addr' field in struct
> mptcp_addr_info.
>
> Then no need to change the argument of mptcp_pm_add_addr_signal and no
> need to modify the code in mptcp_write_options now, the original code is
> fine.
>
> So this patch reverts back more code.
>
> And the commit log needs to be updated:
>
> '''
> According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build
> the ADD_ADDR/ADD_ADDR_ECHO option.
>
> In mptcp_pm_add_addr_signal(), use opts->remote or opts->local to save the
> announced ADD_ADDR or ADD_ADDR_ECHO address.
> '''

Please update the commit log to:
'''
According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build
the ADD_ADDR/ADD_ADDR_ECHO option.

In mptcp_pm_add_addr_signal(), use opts->addr to save the announced
ADD_ADDR or ADD_ADDR_ECHO address.
'''

>
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> ---
>  net/mptcp/options.c  | 25 ++++++++++++-------------
>  net/mptcp/pm.c       |  6 +++---
>  net/mptcp/protocol.h |  2 +-
>  3 files changed, 16 insertions(+), 17 deletions(-)
>
> diff --git a/net/mptcp/options.c b/net/mptcp/options.c
> index eafdb9408f3a..cb29a5605776 100644
> --- a/net/mptcp/options.c
> +++ b/net/mptcp/options.c
> @@ -668,7 +668,7 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
>         int len;
>
>         if (!mptcp_pm_should_add_signal(msk) ||
> -           !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, opts,
> +           !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &opts->addr,
>                     &echo, &port, &drop_other_suboptions))
>                 return false;
>
> @@ -692,8 +692,8 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
>                                                      msk->remote_key,
>                                                      &opts->addr);
>         }
> -       pr_debug("addr_id=%d, addr_port=%d, ahmac=%llu, echo=%d",
> -                opts->addr.id, ntohs(opts->addr.port), opts->ahmac, echo);
> +       pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d",
> +                opts->addr.id, opts->ahmac, echo, ntohs(opts->addr.port));
>
>         return true;
>  }
> @@ -1250,16 +1250,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
>
>  mp_capable_done:
>         if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
> -               struct mptcp_addr_info *addr = &opts->addr;
>                 u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
>                 u8 echo = MPTCP_ADDR_ECHO;
>
>  #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -               if (addr->family == AF_INET6)
> +               if (opts->addr.family == AF_INET6)
>                         len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
>  #endif
>
> -               if (addr->port)
> +               if (opts->addr.port)
>                         len += TCPOLEN_MPTCP_PORT_LEN;
>
>                 if (opts->ahmac) {
> @@ -1268,25 +1267,25 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
>                 }
>
>                 *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
> -                                     len, echo, addr->id);
> -               if (addr->family == AF_INET) {
> -                       memcpy((u8 *)ptr, (u8 *)&addr->addr.s_addr, 4);
> +                                     len, echo, opts->addr.id);
> +               if (opts->addr.family == AF_INET) {
> +                       memcpy((u8 *)ptr, (u8 *)&opts->addr.addr.s_addr, 4);
>                         ptr += 1;
>                 }
>  #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -               else if (addr->family == AF_INET6) {
> -                       memcpy((u8 *)ptr, addr->addr6.s6_addr, 16);
> +               else if (opts->addr.family == AF_INET6) {
> +                       memcpy((u8 *)ptr, opts->addr.addr6.s6_addr, 16);
>                         ptr += 4;
>                 }
>  #endif
>
> -               if (!addr->port) {
> +               if (!opts->addr.port) {
>                         if (opts->ahmac) {
>                                 put_unaligned_be64(opts->ahmac, ptr);
>                                 ptr += 2;
>                         }
>                 } else {
> -                       u16 port = ntohs(addr->port);
> +                       u16 port = ntohs(opts->addr.port);
>
>                         if (opts->ahmac) {
>                                 u8 *bptr = (u8 *)ptr;
> diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
> index 5fe3805af02a..781da0885f98 100644
> --- a/net/mptcp/pm.c
> +++ b/net/mptcp/pm.c
> @@ -257,7 +257,7 @@ void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup)
>
>  bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>                               unsigned int opt_size, unsigned int remaining,
> -                             struct mptcp_out_options *opts, bool *echo,
> +                             struct mptcp_addr_info *saddr, bool *echo,
>                               bool *port, bool *drop_other_suboptions)
>  {
>         int ret = false;
> @@ -286,10 +286,10 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>                 goto out_unlock;
>
>         if (*echo) {
> -               opts->addr = msk->pm.remote;
> +               *saddr = msk->pm.remote;
>                 add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
>         } else {
> -               opts->addr = msk->pm.local;
> +               *saddr = msk->pm.local;
>                 add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
>         }
>         WRITE_ONCE(msk->pm.addr_signal, add_addr);
> diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
> index b54335857b6e..099e3e6a4c89 100644
> --- a/net/mptcp/protocol.h
> +++ b/net/mptcp/protocol.h
> @@ -801,7 +801,7 @@ static inline int mptcp_rm_addr_len(const struct mptcp_rm_list *rm_list)
>
>  bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>                               unsigned int opt_size, unsigned int remaining,
> -                             struct mptcp_out_options *opts, bool *echo,
> +                             struct mptcp_addr_info *saddr, bool *echo,
>                               bool *port, bool *drop_other_suboptions);
>  bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
>                              struct mptcp_rm_list *rm_list);
> --
> 2.31.1
>

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal"
  2021-07-25 13:41 [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal" Geliang Tang
  2021-07-25 13:50 ` Geliang Tang
@ 2021-07-26  8:08 ` Paolo Abeni
  2021-07-27  0:31 ` Mat Martineau
  2 siblings, 0 replies; 4+ messages in thread
From: Paolo Abeni @ 2021-07-26  8:08 UTC (permalink / raw)
  To: Geliang Tang, mptcp

On Sun, 2021-07-25 at 21:41 +0800, Geliang Tang wrote:
> Paolo's patch (Squash-to: "mptcp: build ADD_ADDR/echo-ADD_ADDR option
> according pm.add_signal") reverts back to a single 'addr' field in struct
> mptcp_addr_info.
> 
> Then no need to change the argument of mptcp_pm_add_addr_signal and no
> need to modify the code in mptcp_write_options now, the original code is
> fine.
> 
> So this patch reverts back more code.
> 
> And the commit log needs to be updated:
> 
> '''
> According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build
> the ADD_ADDR/ADD_ADDR_ECHO option.
> 
> In mptcp_pm_add_addr_signal(), use opts->remote or opts->local to save the
> announced ADD_ADDR or ADD_ADDR_ECHO address.
> '''
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> ---
>  net/mptcp/options.c  | 25 ++++++++++++-------------
>  net/mptcp/pm.c       |  6 +++---
>  net/mptcp/protocol.h |  2 +-
>  3 files changed, 16 insertions(+), 17 deletions(-)
> 
> diff --git a/net/mptcp/options.c b/net/mptcp/options.c
> index eafdb9408f3a..cb29a5605776 100644
> --- a/net/mptcp/options.c
> +++ b/net/mptcp/options.c
> @@ -668,7 +668,7 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
>  	int len;
>  
>  	if (!mptcp_pm_should_add_signal(msk) ||
> -	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, opts,
> +	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &opts->addr,
>  		    &echo, &port, &drop_other_suboptions))
>  		return false;
>  
> @@ -692,8 +692,8 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
>  						     msk->remote_key,
>  						     &opts->addr);
>  	}
> -	pr_debug("addr_id=%d, addr_port=%d, ahmac=%llu, echo=%d",
> -		 opts->addr.id, ntohs(opts->addr.port), opts->ahmac, echo);
> +	pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d",
> +		 opts->addr.id, opts->ahmac, echo, ntohs(opts->addr.port));
>  
>  	return true;
>  }
> @@ -1250,16 +1250,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
>  
>  mp_capable_done:
>  	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
> -		struct mptcp_addr_info *addr = &opts->addr;
>  		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
>  		u8 echo = MPTCP_ADDR_ECHO;
>  
>  #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -		if (addr->family == AF_INET6)
> +		if (opts->addr.family == AF_INET6)
>  			len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
>  #endif
>  
> -		if (addr->port)
> +		if (opts->addr.port)
>  			len += TCPOLEN_MPTCP_PORT_LEN;
>  
>  		if (opts->ahmac) {
> @@ -1268,25 +1267,25 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
>  		}
>  
>  		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
> -				      len, echo, addr->id);
> -		if (addr->family == AF_INET) {
> -			memcpy((u8 *)ptr, (u8 *)&addr->addr.s_addr, 4);
> +				      len, echo, opts->addr.id);
> +		if (opts->addr.family == AF_INET) {
> +			memcpy((u8 *)ptr, (u8 *)&opts->addr.addr.s_addr, 4);
>  			ptr += 1;
>  		}
>  #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -		else if (addr->family == AF_INET6) {
> -			memcpy((u8 *)ptr, addr->addr6.s6_addr, 16);
> +		else if (opts->addr.family == AF_INET6) {
> +			memcpy((u8 *)ptr, opts->addr.addr6.s6_addr, 16);
>  			ptr += 4;
>  		}
>  #endif
>  
> -		if (!addr->port) {
> +		if (!opts->addr.port) {
>  			if (opts->ahmac) {
>  				put_unaligned_be64(opts->ahmac, ptr);
>  				ptr += 2;
>  			}
>  		} else {
> -			u16 port = ntohs(addr->port);
> +			u16 port = ntohs(opts->addr.port);
>  
>  			if (opts->ahmac) {
>  				u8 *bptr = (u8 *)ptr;
> diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
> index 5fe3805af02a..781da0885f98 100644
> --- a/net/mptcp/pm.c
> +++ b/net/mptcp/pm.c
> @@ -257,7 +257,7 @@ void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup)
>  
>  bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>  			      unsigned int opt_size, unsigned int remaining,
> -			      struct mptcp_out_options *opts, bool *echo,
> +			      struct mptcp_addr_info *saddr, bool *echo,
>  			      bool *port, bool *drop_other_suboptions)
>  {
>  	int ret = false;
> @@ -286,10 +286,10 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>  		goto out_unlock;
>  
>  	if (*echo) {
> -		opts->addr = msk->pm.remote;
> +		*saddr = msk->pm.remote;
>  		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
>  	} else {
> -		opts->addr = msk->pm.local;
> +		*saddr = msk->pm.local;
>  		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
>  	}
>  	WRITE_ONCE(msk->pm.addr_signal, add_addr);
> diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
> index b54335857b6e..099e3e6a4c89 100644
> --- a/net/mptcp/protocol.h
> +++ b/net/mptcp/protocol.h
> @@ -801,7 +801,7 @@ static inline int mptcp_rm_addr_len(const struct mptcp_rm_list *rm_list)
>  
>  bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
>  			      unsigned int opt_size, unsigned int remaining,
> -			      struct mptcp_out_options *opts, bool *echo,
> +			      struct mptcp_addr_info *saddr, bool *echo,
>  			      bool *port, bool *drop_other_suboptions);
>  bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
>  			     struct mptcp_rm_list *rm_list);

LGTM, thanks!

(not sure if my Acked-by tag can be added here, do to many tags already
present ;)

/P




^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal"
  2021-07-25 13:41 [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal" Geliang Tang
  2021-07-25 13:50 ` Geliang Tang
  2021-07-26  8:08 ` Paolo Abeni
@ 2021-07-27  0:31 ` Mat Martineau
  2 siblings, 0 replies; 4+ messages in thread
From: Mat Martineau @ 2021-07-27  0:31 UTC (permalink / raw)
  To: Geliang Tang; +Cc: mptcp

On Sun, 25 Jul 2021, Geliang Tang wrote:

> Paolo's patch (Squash-to: "mptcp: build ADD_ADDR/echo-ADD_ADDR option
> according pm.add_signal") reverts back to a single 'addr' field in struct
> mptcp_addr_info.
>
> Then no need to change the argument of mptcp_pm_add_addr_signal and no
> need to modify the code in mptcp_write_options now, the original code is
> fine.
>
> So this patch reverts back more code.
>
> And the commit log needs to be updated:
>
> '''
> According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build
> the ADD_ADDR/ADD_ADDR_ECHO option.
>
> In mptcp_pm_add_addr_signal(), use opts->remote or opts->local to save the
> announced ADD_ADDR or ADD_ADDR_ECHO address.
> '''
>
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>

Hi Geliang,

Thanks for the updates to this patch. The result of squashing Paolo's 
patch and yours to the "mptcp: build ADD_ADDR..." patch is much clearer.

As you note here (and in your reply), the commit message also needs some 
work. One more part of that, the commit message should say 
"pm.addr_signal" instead of "pm.add_signal", but that is a separate fix.


Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>



> ---
> net/mptcp/options.c  | 25 ++++++++++++-------------
> net/mptcp/pm.c       |  6 +++---
> net/mptcp/protocol.h |  2 +-
> 3 files changed, 16 insertions(+), 17 deletions(-)
>
> diff --git a/net/mptcp/options.c b/net/mptcp/options.c
> index eafdb9408f3a..cb29a5605776 100644
> --- a/net/mptcp/options.c
> +++ b/net/mptcp/options.c
> @@ -668,7 +668,7 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
> 	int len;
>
> 	if (!mptcp_pm_should_add_signal(msk) ||
> -	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, opts,
> +	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &opts->addr,
> 		    &echo, &port, &drop_other_suboptions))
> 		return false;
>
> @@ -692,8 +692,8 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
> 						     msk->remote_key,
> 						     &opts->addr);
> 	}
> -	pr_debug("addr_id=%d, addr_port=%d, ahmac=%llu, echo=%d",
> -		 opts->addr.id, ntohs(opts->addr.port), opts->ahmac, echo);
> +	pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d",
> +		 opts->addr.id, opts->ahmac, echo, ntohs(opts->addr.port));
>
> 	return true;
> }
> @@ -1250,16 +1250,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
>
> mp_capable_done:
> 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
> -		struct mptcp_addr_info *addr = &opts->addr;
> 		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
> 		u8 echo = MPTCP_ADDR_ECHO;
>
> #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -		if (addr->family == AF_INET6)
> +		if (opts->addr.family == AF_INET6)
> 			len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
> #endif
>
> -		if (addr->port)
> +		if (opts->addr.port)
> 			len += TCPOLEN_MPTCP_PORT_LEN;
>
> 		if (opts->ahmac) {
> @@ -1268,25 +1267,25 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
> 		}
>
> 		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
> -				      len, echo, addr->id);
> -		if (addr->family == AF_INET) {
> -			memcpy((u8 *)ptr, (u8 *)&addr->addr.s_addr, 4);
> +				      len, echo, opts->addr.id);
> +		if (opts->addr.family == AF_INET) {
> +			memcpy((u8 *)ptr, (u8 *)&opts->addr.addr.s_addr, 4);
> 			ptr += 1;
> 		}
> #if IS_ENABLED(CONFIG_MPTCP_IPV6)
> -		else if (addr->family == AF_INET6) {
> -			memcpy((u8 *)ptr, addr->addr6.s6_addr, 16);
> +		else if (opts->addr.family == AF_INET6) {
> +			memcpy((u8 *)ptr, opts->addr.addr6.s6_addr, 16);
> 			ptr += 4;
> 		}
> #endif
>
> -		if (!addr->port) {
> +		if (!opts->addr.port) {
> 			if (opts->ahmac) {
> 				put_unaligned_be64(opts->ahmac, ptr);
> 				ptr += 2;
> 			}
> 		} else {
> -			u16 port = ntohs(addr->port);
> +			u16 port = ntohs(opts->addr.port);
>
> 			if (opts->ahmac) {
> 				u8 *bptr = (u8 *)ptr;
> diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
> index 5fe3805af02a..781da0885f98 100644
> --- a/net/mptcp/pm.c
> +++ b/net/mptcp/pm.c
> @@ -257,7 +257,7 @@ void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup)
>
> bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
> 			      unsigned int opt_size, unsigned int remaining,
> -			      struct mptcp_out_options *opts, bool *echo,
> +			      struct mptcp_addr_info *saddr, bool *echo,
> 			      bool *port, bool *drop_other_suboptions)
> {
> 	int ret = false;
> @@ -286,10 +286,10 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
> 		goto out_unlock;
>
> 	if (*echo) {
> -		opts->addr = msk->pm.remote;
> +		*saddr = msk->pm.remote;
> 		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
> 	} else {
> -		opts->addr = msk->pm.local;
> +		*saddr = msk->pm.local;
> 		add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
> 	}
> 	WRITE_ONCE(msk->pm.addr_signal, add_addr);
> diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
> index b54335857b6e..099e3e6a4c89 100644
> --- a/net/mptcp/protocol.h
> +++ b/net/mptcp/protocol.h
> @@ -801,7 +801,7 @@ static inline int mptcp_rm_addr_len(const struct mptcp_rm_list *rm_list)
>
> bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
> 			      unsigned int opt_size, unsigned int remaining,
> -			      struct mptcp_out_options *opts, bool *echo,
> +			      struct mptcp_addr_info *saddr, bool *echo,
> 			      bool *port, bool *drop_other_suboptions);
> bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
> 			     struct mptcp_rm_list *rm_list);
> -- 
> 2.31.1
>
>
>

--
Mat Martineau
Intel

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-07-27  0:31 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-25 13:41 [MPTCP][PATCH mptcp-next] Squash to "Squash-to: mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal" Geliang Tang
2021-07-25 13:50 ` Geliang Tang
2021-07-26  8:08 ` Paolo Abeni
2021-07-27  0:31 ` Mat Martineau

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